Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION

(See Section 10 and Rule 13)

Title of invention:
A SYSTEM AND METHOD FOR ISOLATION OF META ISOBUTYL TOLUENE (MIBT)

APPLICANT:
VINATI ORGANICS LTD.
An Indian entity having address at:
Parinee Crescenzo, A Wing, 11th floor, 1102, G Block,
Behind MCA, Bandra Kurla Complex, Bandra (east), Mumbai 400051, Maharashtra, India

The following specification describes the invention and the manner in which it is to be performed.

CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
The present application claims no priority from any of the patent application(s).

TECHNICAL FIELD
The present subject matter described herein, in general, relates to isobutyl toluene, more particularly relates to a system and method for isolation of meta isobutyl toluene.
BACKGROUND
Meta isobutyl toluene (hereinafter referred to as “m- isobutyl toluene” or “MIBT”) is an alkyl substituted aromatic hydrocarbon i.e., isobutyl substituted toluene produced by reacting Propylene with m-xylene. MIBT has wide applications in the fields of perfume industry and cosmetics. MIBT is useful as an intermediate product for the preparation of pharmaceuticals compounds and as preparation intermediate for perfumes and fragrances.
In current state of art, the methods for the synthesis of MIBT using the reactants such as propylene and m-xylene are disclosed. The MIBT is used in the preparation raw materials and as an intermediate and has industrial applicability in the preparation of perfumery compounds.
In state of art, certain modifications are done in the side chain of toluene to produce different compounds which may modify the odour of the final product. Different isomers of meta isobutyl toluene may react with another compound and may produce the compound with modified odour if present in large amount. Even if the isomers of the alkyl aromatic compounds are present only in trace amounts, they may change the overall olfactory impressions of fragrance, which makes the art of composing perfumes or fragrances difficult.
In state of the art, it is stated that sulfur-containing compounds are some of the strongest odorants. Therefore, the perception of the fragrance compounds often depends on their concentration as well as on their chemical, diastereo- and enantiomeric purity.
Therefore, there is a long felt need for providing an improved system and process for the isolation of MIBT and to obtain the MIBT with a minimal amount if impurities such as undesired isomers with high purity and yield.

OBJECTS OF THE INVENTION
The principal object of this invention is to provide a system for isolation of MIBT enabled to provide a high yield and high purity of MIBT.
Another object of this invention is to provide a method for the isolation of MIBT enabled to provide high yield and high purity of MIBT.
Yet another object of this is invention is to provide a system and method enabled to selectively produce MIBT with reduced amount of isomers, impurities and by-products.
Still another object of this invention is to provide a system and method for simultaneous recovery of the side-products and purified MIBT from a crude MIBT slurry.
Yet another object of this invention is to provide an isolated MIBT product with high purity.
SUMMARY
This summary is provided to introduce concepts related to a system and method for isolation of Meta isobutyl toluene (MIBT). This summary is not intended to identify essential features of the claimed subject matter, nor it is intended for use in determining or limiting the scope of the disclosed subject matter.
In accordance with an embodiment of the present subject matter, a system and method for the isolation of Meta isobutyl toluene (MIBT) is described herein.

In one embodiment, the said isolated methyl iso-butyl toluene (MIBT) product may comprise % moisture content 10-250 ppm and a content of sulfur maybe within a range of 0-10 ppm.
In another embodiment, a system for isolation of meta iso-butyl toluene (MIBT) to obtain an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9%. The said system may comprise an MIBT separation unit configured for isolation of MIBT from other one or more by-products from upper portion of the said fractionation unit at predetermined temperature and pressure. The said system may comprise a heavy hydrocarbons (HHC) separation unit configured for separation of a mixture of heavy hydrocarbons (HHC) from the bottom of the said fractionation unit.
In another embodiment, a method of isolation of methyl iso-butyl toluene (MIBT) to obtain an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% is disclosed. The said method of isolation of methyl iso-butyl toluene (MIBT) may comprise various steps. The said method further may comprise a step of isolating a pure form of methyl iso-butyl toluene (MIBT) in an MIBT separation unit at a predetermined top column temperature and a bottom column temperature, wherein the said top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2. The said method further may comprise as step of separating a mixture of one or more heavy hydrocarbons (HHC) from the bottom of the fractionation unit in an HHC separation unit at a predetermined temperature. The said method further may comprise as step of enabling passage of a pure form of MIBT to a molecular sieve unit to desulfurize and to remove moisture content from the pure form of methyl iso-butyl toluene (MIBT). The said method further may comprise as step of transferring the pure form of MIBT to the MIBT main storage unit enabled for storing the isolated MIBT product having purity between 98-99.9%.
List of Abbreviations
MIBT- Meta isobutyl toluene
LHC- Light hydrocarbons
HHC- Heavy hydrocarbons
O-IBT- Ortho-isobutyl toluene
P-IBT- para-isobutyl toluene
GCMS- Gas chromatography mass spectroscopy
NBMB- n-butyl methyl benzene
RT- retention time
RRT- relative retention time

BRIEF DESCRIPTION OF DRAWINGS
The detailed description is described with reference to the accompanying Figures. In the Figures, the left-most digit(s) of a reference number identifies the Figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.
Figure 1 depicts a system (100) for the isolation of Meta isobutyl toluene (MIBT), in accordance with an embodiment of the present subject matter.
Figure 2 depicts a fractionation unit (104) for the isolation of Meta isobutyl toluene (MIBT), in accordance with an embodiment of the present subject matter.
Figure 3 depicts a method (300) for the isolation of Meta isobutyl toluene (MIBT), in accordance with an embodiment of the present subject matter.
DETAILED DESCRIPTION
Reference throughout the specification to “various embodiments,” “some embodiments,” “one embodiment,” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in various embodiments,” “in some embodiments,” “in one embodiment,” or “in an embodiment” in places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.
The words "comprising," "having," "containing," and "including," and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although any methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary methods are described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
Various modifications to the embodiment may be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art may readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein. The detailed description of the invention will be described hereinafter referring to accompanied drawings.
In accordance with an embodiment of the present subject matter, a system (100) and method (300) for the isolation of Meta isobutyl toluene (MIBT) product having purity between 98-99.9% is described herein.
In one embodiment, referring to figure 1, and 2 the said system (100) may comprise a light hydrocarbons (LHC) separation unit (102), a solvent recovery unit (103), a fractionation unit (104) comprising an MIBT separation unit (201) and a heavy hydrocarbons (HHC) separation unit (202), Internal MIBT tank (106), MIBT inspection unit (107), an MIBT main storage unit (108), LHC storage unit (109) and m-xylene storage unit (110).
In one embodiment, referring to Figure 1 and 2, the said fractionation unit (104) for MIBT isolation may comprise an MIBT separation unit (201) configured for isolation of MIBT from other one or more by-products from upper portion of the said fractionation unit (104) at predetermined temperature and pressure. The said a fractionation unit (104) further may comprise a heavy hydrocarbons (HHC) separation unit (202) configured for separation of a mixture of heavy hydrocarbons (HHC) from the bottom of the said fractionation unit (104) at predetermined temperature and pressure.

In one embodiment, the said system (100) further may comprise a light hydrocarbons (LHC) separation unit (102) configured for the separation of a mixture of light hydrocarbons (LHC) from the crude MIBT organic stream at a predetermined temperature and pressure.

In one embodiment, the light hydrocarbons (LHC) separation unit (102) maybe enabled for maintaining the predetermined top column temperature in between 80 – 85 0C and bottom column temperature in between 196-200 0C and a pressure for the separation of a mixture of light hydrocarbons maybe maintained in between 2.2 -2.6 Kg/cm2.

In one embodiment, the said system (100) further may comprise a solvent recovery unit (103) configured for the separation and recovery of m-xylene solvent from a LHC free crude MIBT organic stream at a predetermined temperature and pressure.

In one embodiment, the said solvent recovery unit (103) maybe enabled for maintaining the predetermined top column temperature in between 110 – 125 0C and bottom column temperature in between 196-198 0C and pressure for the separation and recovery of the m-xylene solvent is maintained in between 0.15 – 0.25 Kg/cm2.

In one embodiment, the said system (100) further may comprise an internal MIBT inspection unit (107) configured to obtain a pure form of MIBT fraction from the MIBT fractionation unit (104), wherein the internal MIBT inspection unit (107) is further connected to a molecular sieve unit (not shown in figure).

In one embodiment, the said system (100) further may comprise an MIBT main storage unit (108) enabled for storing the isolated MIBT.

In one embodiment, the said the MIBT fractionation unit (104) maybe a continuous distillation assembly comprising one or more distillation towers (not shown in figure).

In one embodiment, the said one or more distillation towers (201) maybe at least 2.

In one embodiment, the said the internal MIBT inspection unit (107) maybe enabled for the inspection of predefined purity of methyl iso-butyl toluene (MIBT).
In one embodiment, the said system (100) for isolation of methyl iso-butyl toluene (MIBT) may comprise random packing such as pall rings, wherein the HHC separation unit (105) maybe a distillation column comprising geometrically complex structured packings, and wherein the MIBT fractionation unit (104) maybe a distillation column comprising structured packing such as fixed packing structures.
In an embodiment, the said MIBT separation unit (201) maybe enabled for maintaining the predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and a pressure for the separation and recovery of isolation of MIBT from other one or more by-products maybe maintained in between 0.2 – 0.4 Kg/cm2.

In an embodiment, the said HHC separation unit (202) maybe enabled for the separation of the said heavy hydrocarbons (HHC), wherein one or more heavy hydrocarbons (HHC) from the bottom of the the said fractionation unit (104) maybe separated at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2.

In one embodiment, the said the molecular sieve unit (not shown in figure) maybe configured for removal of moisture, desulphurization and to improve a storage stability of the isolated pure MIBT.

In one embodiment, a method (300) of isolation of methyl iso-butyl toluene (MIBT) to obtain an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% by enabling the system (100) is described herein.

In one embodiment, referring to figure 3, the said method (300) may comprise a step of feeding (301) a crude MIBT organic stream to a light hydrocarbons (LHC) separation unit (102) from a crude MIBT preparation unit (not shown in figure).
The said method (300) further may comprise a step of separating (302) a mixture of one or more light hydrocarbons (LHC) from the crude MIBT organic stream in an LHC separation unit (102) at a predetermined top column temperature in between 80 – 85 0C and bottom column temperature in between 196-200 0C and a pressure range of 2.2 -2.6 Kg/cm2. The said method (300) further may comprise a step of recovering (303) m-xylene solvent from a LHC free crude MIBT organic stream in a solvent recovery unit (103) at a predetermined top column temperature in between 110 – 125 0C and bottom column temperature in between 196-198 0C and a pressure range of 0.15 – 0.25 Kg/cm2.

The said method (300) further may comprise a step of isolating (304) a pure form of methyl iso-butyl toluene (MIBT) in an MIBT separation unit (201) at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2. The said method (300) further may comprise a step of separating (305) a mixture of one or more heavy hydrocarbons (HHC) from the bottom of the fractionation unit (104) in an HHC separation unit (202) at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2.

The said method (300) further may comprise a step of enabling passage (306) of a pure form of MIBT to a molecular sieve unit (not shown in figure) to desulfurize and to remove moisture content from the pure form of methyl iso-butyl toluene (MIBT). The said method (300) further may comprise a step of transferring (307) the pure form of MIBT to the MIBT main storage unit (108) enabled for storing the isolated MIBT product having purity between 98-99.9%.
In one embodiment, an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% is described herein.

In one embodiment, the said isolated methyl iso-butyl toluene (MIBT) product may comprise % moisture content 10-250 ppm and a content of sulfur maybe within a range of 0-10 ppm.

In one embodiment, a sum of all impurities is between but no more than 0-2%.

In one embodiment, an appearance of the MIBT product maybe clear, colourless liquid, and maybe free from any visible impurities.

In an embodiment, the said isolated methyl iso-butyl toluene (MIBT) product may comprise % impurities such as but not limited to % meta xylene within a range of 0-0.1%, n-butyl methyl benzene within a range of 0.01-0.15%, and % isomer within a range of 0.01-0.15%. Moreover, the said isolated methyl iso-butyl toluene (MIBT) product may comprise impurity % p-xylene within a range of 0.05-0.7%, % o-xylene within a range of 0.1-1%, % ethyl benzene within a range of 0-0.2% and other single unknown impurity within range of 0.01-0.1%.

In one embodiment, the said other single unknown impurity maybe a mixture of Ortho-isobutyl toluene (O-IBT) and para-isobutyl toluene (P-IBT).

In one embodiment, the said isolated methyl iso-butyl toluene (MIBT) product maybe having a bromine index maybe within a range of 0-10 mg/100g, a content of chloride maybe within a range of 0-10 ppm, and wherein a distillation range of the isolated methyl iso-butyl toluene (MIBT) product is between 0.1-3 degrees.

The instant subject matter is further described by the following examples:

Experimental Details:
Example 1: Preparation of Meta isobutyl toluene (MIBT) from a crude MIBT preparation unit (Not shown in figure):
In an exemplary embodiment by referring to figure 1-3, a system (100) and a method (300) for the isolation of Meta isobutyl toluene (MIBT) is disclosed herein. Meta Isobutyl Toluene (MIBT) is produced by reacting propylene with meta xylene in presence of Metallic Sodium (Na) catalyst using Potassium Carbonate (K2CO3) as catalyst carrier.
During production of MIBT, some byproducts are also formed, and these are mainly, excess meta-xylene, hexene, light hydrocarbons (LHC) and heavy Hydrocarbons (HHC). Once the meta isobutyl toluene (MIBT) production reaction is completed, the contents of the crude MIBT preparation unit (not shown in figure) are dumped to the neutralizer for destruction of the catalyst. The destruction of the catalyst is carried out by using water. While transferring batch from MIBT preparation unit (not shown in figure) to neutralizer unreacted gas from MIBT preparation unit gets liberated and it is collected in gas holder. This gas is compressed & liquefied.
The crude and wastewater from the neutralizer are then transferred to a separator from where wastewater is then transferred to a spent water tank. The organic layer is transferred to the crude tank from where it is continuously fed to a light hydrocarbons (LHC) separation unit (102) enabled for the LHC recovery and recovered LHC is then transferred to LHC storage unit (109). Then LHC free crude is then fed to a solvent recovery unit (103) enabled for the m-xylene recovery, wherein the recovered m-xylene is then transferred to m-xylene storage unit (110) for utilization again in process. The crude mixture is transferred to a fractionation unit (104) configured for separation of MIBT. Then crude mixture is fed to MIBT separation unit (201) enabled for the separation of MIBT. Then crude mixture is fed to heavy hydrocarbons (HHC) separation unit (202) enabled for the Heavy Hydrocarbons (HHC) recovery, wherein the recovered Heavy Hydrocarbons (HHC) is then transferred to HHC storage. Furthermore, heavy hydrocarbons (HHC) separation unit (202) is also enabled for the separation of MIBT, wherein the separated MIBT is then transferred to MIBT main storage unit (108).

All intermediate and main storage tanks are kept under Nitrogen (N2) blanketing from a safety point of view. This Nitrogen is also used for purging of vessels as and when required.

Example 2: Isolation of methyl iso-butyl toluene (MIBT) by using a system (100) for isolation of methyl iso-butyl toluene (MIBT):
In another exemplary embodiment by referring to figure 1-3, a system (100) for isolation of methyl iso-butyl toluene (MIBT) and a method (300) for the isolation of Meta isobutyl toluene (MIBT) is disclosed herein. The said system (100) comprises a light hydrocarbons (LHC) separation unit (102) configured for the LHC recovery. The said system (100) further comprises of a solvent recovery unit (103) configured for the separation and recovery of m-xylene solvent from an LHC free crude MIBT organic stream. The said system (100) further comprises of a fractionation unit (104) configured for isolation of MIBT from other one or more by-products from upper portion of the said fractionation unit (104). The said fractionation unit (104) further comprises of MIBT separation unit (201) configured for the separation of MIBT and a heavy hydrocarbons (HHC) separation unit (202) configured for separation of a mixture of heavy hydrocarbons (HHC) from the bottom of the said fractionation unit (104).

Example 3: Optimization of distillation time and temperature to obtain highly pure (MIBT):
To obtain a highly pure content of MIBT in the insolation process by implementing the system (100) time and temperature of the in the fractionation unit (104) was optimized as per the table 1 below.

Table 1
# Top column temperature Bottom column temperature GC Results (purity)
MIBT m-Xylene 3 rd isomer NBMB Total
Batch 1 156.5 194.2 99.73 0.02 0.14 0.11 100
Batch 2 154 192 99.81 0.03 0.13 0.03 100
Batch 3 156.7 194.3 99.72 0.01 0.17 0.1 100
Batch 4 154.1 192 99.79 0.01 0.11 0.09 100
(MIBT= Meta isobutyl toluene, NBMB= n- butyl methyl benzene)

Referring to the Table 1 it was observed that the highly pure content of MIBT was obtained between the top column temperature range of 154-157 degrees and bottom column temperature between the range of 192-195 degrees calculated at a pressure of 0.36 Kg/cm2.

Example 4
Referring to Figure 4 and 5 an FID GC on Area% basis test method was implemented to determine the % purity of MIBT product. To determine the % purity of MIBT Standard run Retention Time based reference was used. The GC apparatus used was Shimadzu 2014 with FID. The peaks were identified with respect to retention time (RT) and relative retention time (RRT). The Retention Time for meta isobutyl toluene (MIBT) is about 19.95 (Refer standard run for RT).

Following is the relative retention time (RRT) table for the known components 0.5 µl sample, 40 chromatogram, with column D.B. Petro Column, 100 meter 0.25 mm ID, 0.50 µm film thickness.

Table 2

SR NO COMPONENT RRT
1 Meta xylene 0.7318
2 Isobutyl benzene 0.8872
3 Meta isobutyl toluene 1.0
4 3rd Isomer (o-xylene/p-xylene) 1.0152
5 n- butyl methyl benzene (NBMB) 1.0450

Example 4a
Referring to Figure 4 and Table 3 area % to determine purity of MIBT product was observed and calculated.
Table 3
Peak # Ret. time Area Height Area%
1 17.693 3243 500 0.0026
2 18.623 1281 264 0.0010
3 18.794 1540 232 0.0012
4 19.357 864 249 0.0007
5 19.482 23470 4382 0.0185
6 19.955 126344505 121124899 99.6131
7 20.248 217867 83439 0.1718
8 20.526 1761 623 0.0014
9 20.841 240747 72193 0.1898
Total 126835278 12275781 100.00

From the above analysis table it can be clearly observed that % purity of pure form of MIBT to the MIBT main storage unit is 99.61%.

Example 4b
Referring to Figure 5 and Table 4 area % to determine purity of MIBT product was observed and calculated.
Table 4
Peak # Ret. time Area Height Area%
1 17.704 3991 604 0.0036
2 18.633 1321 317 0.0012
3 18.795 1618 333 0.0015
4 18.929 56 25 0.0001
5 19.381 1154 304 0.0010
6 19.502 25107 5015 0.0226
7 19.954 110298776 11187322 99.4861
8 20.254 185039 68754 0.1669
9 20.536 2386 735 0.0022
10 20.848 348823 108223 0.3146
11 21.089 240 115 0.0002
Total 110868511 11371747 100.00

From the above analysis table, it can be clearly observed that % purity of pure form of MIBT to the MIBT main storage unit is 99.48%.

Example 5: a system (100) with or without a molecular sieve unit to obtain a pure iso-butyl toluene (MIBT):
To determine reduction in moisture content of MIBT before transferring it to a larger storage tank by using a dryer assembly which reduced moisture content effectively. An input to the dryer has moisture content about 150 ppm and output of the dryer has moisture content about 40 ppm. Typical results of the dryer performance as per Table 5 below. The moisture content values are measured by Karl-Fisher Coulometer instrument.
Table 5
Sr. No. Moisture In Dryer Input Moisture In Dryer Output
1 156 ppm 39 ppm
2 170 ppm 40 ppm
3 152 ppm 38 ppm
4 165 ppm 40 ppm

Table 1: Impurity profile of MIBT isolated product in MIBT storage tank (108) while using system (100) for the isolation of MIBT

Components Unit GC, m-xylene starting material GC, MIBT from MIBT isolation unit (102) (%)
Appearance - Clear Clear, colorless liquid free from visible impurities
m-isobutyl toluene % Nil 99.64
Total sulfur ppm 10 max. Nil
Total chlorine ppm 10 max. Nil
Total fluoride ppm 10 max. Nil
meta xylene % 99.75 0-0.2
n-butyl methyl benzene % Nil 0.01-0.06
p-xylene % 0.6 max. 0.05-0.07
o-xylene % 1.0 max. 0.01-0.16
ethyl benzene % 0.2 max. Nil
Other single unknown impurity (NBMB) % Nil 0.01-0.15
In another embodiment of the invention, the said system (100) and method (300) may be enabled to decrease the extent of impurities in the final MIBT, wherein the said impurities may be one or more of meta xylene, n-butyl methyl benzene, isomers, p-xylene, o-xylene, ethyl and other single unknown impurity.

In another embodiment of the invention, the said system (100) and method (300) may be enabled to obtain the MIBT having characteristics such as clear, colorless liquid, and free from any visible impurities with high purity.

The embodiments, examples and alternatives of the preceding paragraphs or the description and drawings, including any of their various aspects or respective individual features, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible.

Although implementations for a system (100) and method (300) for the isolation of methyl iso-butyl toluene (MIBT) have been described in language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features or methods described. Rather, the specific features and methods are disclosed as examples of implementations of a system (100) and a method (300) for the isolation of methyl iso-butyl toluene (MIBT).
, Claims:WE CLAIM:
1. An isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% comprising:
% moisture content 10-250 ppm; and
a content of sulfur is within a range of 0-10 ppm.

2. The isolated MIBT product as claimed in claim 1, wherein a sum of all impurities is between 0-2%.

3. The isolated MIBT product as claimed in claim 1, wherein an appearance of the MIBT product is clear, colourless liquid, and free from any visible impurities.

4. The isolated MIBT product as claimed in claim 1, wherein the impurities are:
% meta xylene within a range of 0-0.1%;
% n-butyl methyl benzene within a range of 0.01-0.15%;
% p-xylene within a range of 0.05-0.07%;
% o-xylene within a range of 0.1-1%;
% ethyl benzene within a range of 0-0.2%; and
other single unknown impurity within a range of 0.01-0.15%.

5. The isolated MIBT product as claimed in claim 1, wherein the other single MIBT impurity is a mixture of Ortho-isobutyl toluene (O-IBT) and para-isobutyl toluene (P-IBT).

6. The isolated MIBT product as claimed in claim 1, wherein a bromine index maybe within a range of 0-10 mg/100g, a content of chloride is within a range of 0-10 ppm, and wherein a distillation range of the isolated methyl iso-butyl toluene (MIBT) product is between 0.1-3 degrees.

7. A system (100) for isolation of meta iso-butyl toluene (MIBT) to obtain an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% comprising:
a fractionation unit (104) comprising:
an MIBT separation unit (201) configured for isolation of MIBT from other one or more by-products from upper portion of the said fractionation unit (104) at predetermined temperature and pressure; and
a heavy hydrocarbons (HHC) separation unit (202) configured for separation of a mixture of heavy hydrocarbons (HHC) from the bottom of the said fractionation unit (104).

8. The system (100) as claimed in claim 7, wherein the system (100) further comprising a light hydrocarbons (LHC) separation unit (102) configured for the separation of a mixture of light hydrocarbons (LHC) from the crude MIBT organic stream at a predetermined temperature and pressure.

9. The system (100) as claimed in claim 8, wherein the light hydrocarbons (LHC) separation unit (102) is enabled for maintaining the predetermined top column temperature in between 80 – 85 0C and bottom column temperature in between 196-200 0C and a pressure for the separation of a mixture of light hydrocarbons is maintained in between 2.2 -2.6 Kg/cm2.

10. The system (100) as claimed in claim 7, wherein the system (100) further comprising a solvent recovery unit (103) configured for the separation and recovery of m-xylene solvent from a LHC free crude MIBT organic stream at a predetermined temperature and pressure.

11. The system (100) as claimed in claim 10, wherein the solvent recovery unit (103) is enabled for maintaining the predetermined top column temperature in between 110 – 125 0C and bottom column temperature in between 196-198 0C and pressure for the separation and recovery of the m-xylene solvent is maintained in between 0.15 – 0.25 Kg/cm2.

12. The system (100) as claimed in claim 7, wherein the system (100) further comprising an internal MIBT inspection unit (107) configured to obtain a pure form of MIBT fraction from the MIBT separation unit (201), wherein the internal MIBT inspection unit (107) is further connected to a molecular sieve unit.

13. The system (100) as claimed in claim 12, wherein the internal MIBT inspection unit (107) is enabled for the inspection of predefined purity of methyl iso-butyl toluene (MIBT).

14. The system (100) as claimed in claim 12, wherein the molecular sieve unit is configured for removal of moisture, desulphurization and to improve a storage stability of the isolated pure MIBT.

15. The system (100) as claimed in claim 7, wherein the system (100) further comprising an MIBT main storage unit (108) enabled for storing the isolated MIBT.

16. The system (100) as claimed in claim 7, wherein the fractionation unit (104) is a continuous distillation assembly comprising one or more distillation towers.

17. The system (100) as claimed in claim 15, wherein one or more distillation towers are at least 2.

18. The system (100) as claimed in claim 7, wherein the said system (100) for isolation of methyl iso-butyl toluene (MIBT) comprising random packing such as pall rings, wherein the HHC separation unit (202) is a distillation column comprising geometrically complex structured packings, and wherein the MIBT separation unit (201) is a distillation column comprising structured packing such as fixed packing structures.

19. The system (100) as claimed in claim 7, wherein the MIBT separation unit (201) is enabled for maintaining the predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and a pressure for the separation and recovery of isolation of MIBT from other one or more by-products is maintained in between 0.2 – 0.4 Kg/cm2.

20. The system (100) as claimed in claim 7, HHC separation unit (202) is enabled for the separation of the heavy hydrocarbons (HHC), wherein one or more heavy hydrocarbons (HHC) from the bottom of the fractionation unit (104) is separated at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2.

21. A method (300) of isolation of methyl iso-butyl toluene (MIBT) to obtain an isolated methyl iso-butyl toluene (MIBT) product having purity between 98-99.9% by enabling the system (100) as claimed in claim 1 comprising steps of:
isolating (304) a pure form of methyl iso-butyl toluene (MIBT) in an MIBT separation unit (201) at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2;
separating (305) a mixture of one or more heavy hydrocarbons (HHC) from the bottom of the fractionation unit (104) in an HHC separation unit (202) at a predetermined top column temperature in between 150 – 160 0C and bottom column temperature in between 185-200 0C and pressure range in between 0.2 – 0.4 Kg/cm2;
enabling passage (306) of a pure form of MIBT to a molecular sieve unit to desulfurize and to remove moisture content from the pure form of methyl iso-butyl toluene (MIBT); and
transferring (307) the pure form of MIBT to the MIBT main storage unit (108) enabled for storing the isolated MIBT product having purity between 98-99.9%.

22. The method (300) of isolation of methyl iso-butyl toluene (MIBT) as claimed in claim 21, comprising prior step of feeding (301) a crude MIBT organic stream to a light hydrocarbons (LHC) separation unit (102) from a crude MIBT preparation unit;
separating (302) a mixture of one or more light hydrocarbons (LHC) from the crude MIBT organic stream in an LHC separation unit (102) at a predetermined top column temperature in between 80 – 85 0C and bottom column temperature in between 196-200 0C and a pressure range of 2.2 -2.6 Kg/cm2; and
recovering (303) m-xylene solvent from a LHC free crude MIBT organic stream in a solvent recovery unit (103) at a predetermined top column temperature in between 110 – 125 0C and bottom column temperature in between 196-198 0C and a pressure range of 0.15 – 0.25 Kg/cm2;

Dated this 02nd Day of August 2022