Description:FIELD OF INVENTION
[001] The present disclosure relates to an additive formulation for removing the haziness of the fuel. The present disclosure also relates to a method of preparation of additive formulation for removing the haziness of the fuel. The additive formulation of the present disclosure can improve the quality of various white oil products such motor spirit (MS), superior kerosene (SKO), high speed diesel (HSD), mineral turpentine oil (MTO) etc.

BACKGROUND OF THE INVENTION
[002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[003] White oil products like MS, Naphtha, SKO, HSD and ATF (Aviation Turbine Fuel) are transported through multi product pipelines as this is the cheapest and eco-friendly mode of transfer. During pipeline preventive or breakdown maintenance activities, the line product is flushed with water to ensure to avoid fire related hazard. Complete water draining of the pipeline during maintenance cannot be carried out due to operational and maintenance constraints, resulting in water slippage into petroleum products post maintenance activity. The water in the pipeline gets dispersed into the fuel resulting in hazy product receipt at the receiving station.
[004] As per BS standards the appearance of the products should be clear & bright for dispatch and sales. Conventionally the haziness disappears over long standing of the fuel over a duration of one week or more depending upon extent of water dispersion into the fuel. In order to meet the market demand for the product, such long residence durations is not sustainable and will result in product shortages.
[005] CA1331512C discloses a method of de-hazing distillate fuel which comprises adding to the fuel an organosiloxane having at least one quaternary ammonium substituted siloxane unit having the general formula (i) in which a has the value 1 or 2, each R represents a substituted or unsubstituted hydrocarbon group of up to 10 carbon atoms provided that one of the Rs may be a hydroxyl group when a has the value 2, Z represents a quaternary ammonium group (ii) R'N+(R2)3X-linked to the silicon atom of the siloxane unit, R' represents a divalent hydrocarbon group linking the silicon and nitrogen atoms, each R2 represents an alkyl group having up to 20 carbon atoms and X- represents a halogen ion.
[006] Goncalves et al. [Chem. Eng. Trans., 2023, 100, 205-210] discloses the potential application of poly(acrylamide-co-sodium acrylate) hydrogels (PAAm-co-SA) as desiccant materials to remove water from fuels continuously. Fuels with different water contents (only solubilized water or emulsified and solubilized water) were used to feed the hydrogel bed. Also, the influence of feed flow rate and temperature were studied following an experimental design.Raschig Rings like PAAm-co-SA were used as random packing for water removal from diesel and biodiesel.
[007] EP0290163A1 discloses a method of de-hazing distillate fuel which comprises adding to the fuel a solution of a halide salt dissolved in an alcohol, and an alcohol soluble organosiloxane.
[008] US4002558 discloses a method for removing water haze from a middle distillate fuel which comprises contacting said fuel with from 0.002 to 2 volumes per 100 volumes of said fuel, of a solution of an inorganic halide or nitrate of calcium, magnesium, cadmium, copper or nickel dissolved in a water-miscible, fuel-immiscible aliphatic monohydric alcohol, polyhydric alcohol or glycol ether, said solution containing from 0.1 to 50 wt.% of said inorganic halide or nitrate.
[009] Thus, there is an urgent need to develop an effective and ecofriendly formulation to remove the haziness of the fuel.

OBJECTS OF THE INVENTION
[0010] The primary objective of the present disclosure is to provide an additive formulation for removing the haziness of the fuel.
[0011] Another objective of the present disclosure is to provide a method of preparation of an additive formulation for removing the haziness of the fuel.

SUMMARY
[0012] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in Detailed Description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
[0013] Accordingly, in one aspect, the present disclosure relates to a additive formulation for removing the haziness of the fuel comprising: 40 to 50 % w/w of an alkylphenylethoxylate surfactant; 20 to 25% w/w of a first emulsifier; 20 to 25 % w/w of a second emulsifier; and 5 to 15 % w/w of a solubilizing agent, wherein the % w/w is based on the total weight of the formulation.
[0014] Another aspect of the present disclosure relates to a method of preparation of an additive formulation for removing the haziness of the fuel comprising: a) mixing 40 to 50 % w/w of an alkylphenylethoxylate surfactant to 20 to 25 % w/w of a first emulsifier to obtain a first mixture; b) mixing 20 to 25 % w/w of a second emulsifier to the first mixture to obtain a second mixture; and c) mixing 5 to 15 % w/w of a solubilizing agent to the second mixture to obtain an additive formulation.
[0015] Various objects, features, aspects and advantages of the present disclosure will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like features.

BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawing(s) are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0017] FIG. 1 illustrates (a) Freshly additized HSD samples with varying dosage of 30, 50, 80, 100 ppm (read from left to right) and (b) additized HSD samples with varying dosage of 30, 50, 80, 100 ppm (read from left to right) after five hrs of residence time. All Samples became clear and bright.
[0018] FIG. 2 illustrates HSD (diesel) product clearance image (a) line sample to tank and (b) tank sample (top, middle & bottom).
[0019] FIG. 3 illustrates gasoline or MS (motor spirit) product clearance image (a) line sample to tank and (b) tank sample (top, middle & bottom).

DETAILED DESCRIPTION OF THE INVENTION
[0020] The following is a detailed description of embodiments of the disclosure. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0021] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0022] Reference throughout this specification to “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, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this 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.
[0023] In some embodiments, numbers have been used for quantifying weights, percentages, ratios, and so forth, to describe and claim certain embodiments of the invention and are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.
[0024] The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0025] Unless the context requires otherwise, throughout the specification which follows, the word “comprise” and variations thereof, such as “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to.”
[0026] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0027] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. Furthermore, the ranges defined throughout the specification include the end values as well, i.e., a range of 1 to 10 implies that both 1 and 10 are included in the range. For the avoidance of doubt, the applicant shall be entitled to any equivalents according to applicable law.
[0028] All methods described herein can be performed in a suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0029] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified.
[0030] The description that follows, and the embodiments described therein, is provided by way of illustration of an example, or examples, of particular embodiments of the principles and aspects of the present disclosure. These examples are provided for the purposes of explanation, and not of limitation, of those principles and of the disclosure.
[0031] It should also be appreciated that the present disclosure can be implemented in numerous ways, including as a system, a method or a device. In this specification, these implementations, or any other form that the invention may take, may be referred to as processes. In general, the order of the steps of the disclosed processes may be altered within the scope of the invention.
[0032] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[0033] The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus, if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.
[0034] The term “or”, as used herein, is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
[0035] Various terms are used herein to the extent a term used is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0036] An embodiment of the present disclosure is to provide a additive formulation for removing the haziness of the fuel comprising: 40 to 50 % w/w of an alkylphenylethoxylate surfactant; 20 to 25% w/w of a first emulsifier; 20 to 25 % w/w of a second emulsifier; and 5 to 15 % w/w of a solubilizing agent, wherein the % w/w is based on the total weight of the formulation.
[0037] In an embodiment, the alkylphenylethoxylate surfactant is selected from a group consisting of Triton X-100, Tergitol 15, Triton X 115, Triton X 45 and combination thereof. Preferably, the alkylphenylethoxylate surfactant is selected from a group consisting of Triton X-100, Tergitol 15 and Triton X 115.
[0038] In an embodiment, the alkylphenylethoxylate surfactant is added in an amount between 41 to 49 % w/w, or 42 to 48 % w/w, or 43 to 47 % w/w. In another embodiment, the amount ranges between 44 to 46 % w/w and preferred 45% w/w.
[0039] In an embodiment, the first emulsifier is selected from a group consisting of polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, nonyl phenol ethoxylate 20/Tergitol 20 or Tergitol 9 and combination thereof. Preferably, the first emulsifier is selected from polysorbate 20, polysorbate 60, polysorbate 80 and Tergitol 9.
[0040] In an embodiment, the first emulsifier is added in an amount between 21 to 24 % w/w. In another embodiment, the amount ranges between 22 to 23 % w/w and preferred 22.5% w/w.
[0041] In an embodiment, the second emulsifier is selected from a group consisting of polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, PEG 200, PEG 400, PEG 600 and combination thereof. Preferably, the second emulsifier is selected from polysorbate 40, PEG200, PEG400 and PEG 600.
[0042] In an embodiment, the second emulsifier is added in an amount between 21 to 24 % w/w. In another embodiment, the amount ranges between 22 to 23 % w/w and preferred 22.5% w/w.
[0043] In an embodiment, the first emulsifier and the second emulsifier are different.
[0044] In an embodiment, the solubilizing agent is high speed diesel (HSD). HSD is added to improve haziness and retain the properties HSD properties as per IS 1460.
[0045] In an embodiment, the solubilizing agent is added in an amount between 6 to 14 % w/w, or 7 to 13 % w/w, or 8 to 12 % w/w. In another embodiment, the amount ranges between 9 to 11 % w/w and preferred 10% w/w.
[0046] In an embodiment, the additive formulation is added in the hazy fuel in the range of 5 ppm to 200 ppm. Preferably, the additive formulation is added in the hazy fuel in the range of 10 ppm to 150 ppm. More preferably, the additive formulation is added in the hazy fuel in the range of 10 ppm to 100 ppm.
[0047] In an embodiment, the fuel is selected form motor spirit, high speed diesel, superior kerosene oil, mineral turpentine oil and any other hydrocarbon based white oils.
[0048] Another embodiment of the present disclosure is to provide a method of preparation of an additive formulation for removing the haziness of the fuel comprising: a) mixing 40 to 50 % w/w of an alkylphenylethoxylate surfactant to 20 to 25 % w/w of a first emulsifier to obtain a first mixture; b) mixing 20 to 25 % w/w of a second emulsifier to the first mixture to obtain a second mixture; and c) mixing 5 to 15 % w/w of a solubilizing agent to the second mixture to obtain an additive formulation.
[0049] In an embodiment, the mixing is carried out at a speed in the range of 250 to 600 rpm for a period in the range of 30 min to 3 hrs at a temperature in the range of 25 to 40 °C.
[0050] The present disclosure provides an additive formulation containing (i) 45% of alkylphenylethoxylate surfactant (ii) 22.5 % of first emulsifier (iii) 22.5% of second emulsifier and 10% by weight of solubilizing agent. The additive acts as an appearance improvement additive by removing the haziness of the fuel within short duration, which might otherwise take days/weeks to clear the haziness by conventional gravity, based settling procedure. The additive can be used for cleaning up various tanks of crude oil, distillates, reduced crude oil, short residue, bitumen etc.
[0051] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person skilled in the art.
EXAMPLES
[0052] The present invention is further explained in the form of following examples. However, it is to be understood that the following examples are merely illustrative and are not to be taken as limitations upon the scope of the invention.
Example 1
(i) Additive formulation
[0053] Additive formulation of the present disclosure as given in the Table 1 below.

Table 1: Composition of additive formulation.
Ingredient Amount
Triton X-100 45 %
Polysorbate 20 22.5%
Polysorbate 40 22.5%
HSD 10%

(ii) Method of preparation
[0054] The additive formulation was prepared by the convention mixing method, weighing of 45 % w/w of a Triton X-100, 22.5 % w/w of Polysorbate 20, 22.5 % w/w of Polysorbate 40 and 10% HSD as given in above Table 1. At first, 45 % w/w of a Triton X-100 was added in 22.5 % w/w of Polysorbate 20 to obtain a first mixture. 22.5 % w/w of Polysorbate 40 was added in the first mixture to obtain a second mixture. 10 % w/w of HSD was added in the second mixture to obtain the additive formulation, the mixing was carried out at a speed of 500 rpm for a period of 2 hrs at a temperature in the range of 25 to 35 °C.
(iii) Lab scale optimization
[0055] The lab scale dosage optimization of the additive formulation was carried out by following the below methodology: Hazy Diesel samples were taken in 500 ml measuring cylinders. The additive formulation was dosed at 30, 50, 80, 100 ppm to the 500ml diesel sample using micro syringe (FIG. 1). Post dosage the appearance of the additized HSD was monitored every hour. At the end of 5 hrs, the HSD sample with 30 ppm dosage for found to be clear & bright. Hence, 30 ppm was finalized as the recommended dosage for dosing in the product tanks.
(iv) Field trials
[0056] Field trials of the additive formulation were carried out at HPCL pipeline station. Hazy diesel of approximate quantity 15000 kL in two separate tanks were cleared. Following is the sequence of events for two tanks (Tank 1 and Tank 2).
(A) Tank 1
[0057] The product content of Tank 1 was approx. 5300 KL. Requisite quantity of the additive formulation (at 30 ppm dosage) was calculated i.e. 160 kg. To ensure proper mixing, the additive formulation was dosed in the sump tank with recirculation facility. Additive formulation (160 kg) was dosed into sump tank along with 15 KL of hazy HSD. The additized HSD was recirculated for 45 min to ensure proper mixing. The additized HSD from the sump tank was pumped to above ground product Tank 102B and while pumping of 1500 kl of HSD intermittently and product was allowed to settle for 8hrs. Bottom product circulated through water draw points FLP pumps. The TMB (Top, Middle & Bottom) samples were drawn from Tank 1 every 4 hrs and were monitored for appearance parameter (FIG. 2). Samples collected after 8 hours qualified visual appearance and were submitted for Batch formation tests for QC clearance. The results of the QC as shown in Table 2.

Table 2: Quality control report at 30 ppm dosage treatment in tank 1.
Characterstics Units Test methods Specifications Results value
Min Max
Appearance Visual B&C B&C B&C
Colour Visual - - Yellow
Density at 15 °C kg/m3 IS 1448 P:16 810.0 845.0 825.4
Density at 15 °C – Top kg/m3 IS 1448 P:16 810.0 845.0 825.4
Density at 15 °C – Middle kg/m3 IS 1448 P:16 810.0 845.0 825.4
Density at 15 °C – Bottom kg/m3 IS 1448 P:16 810.0 845.0 825.4
Dist-95% v/v recovery °C °C IS 1448 P:18 - 360.0 359.9
Kinematic viscosity at 40°C cst IS 1448 P:25 2.000 4.500 2.394
Flash point abel °C IS 1448 P:20 35.0 - 39.5
CU strip corr for 3 Hr at 50 °C IS 1448 P:15 - 1 1
Four point winter °C IS 1448 P:10 - 3 -3
Cetane index ASTM D4737 46.0 0 53.3
Kinematic viscosity at 40 °C- Top cst IS1447 P:25 2.000 4.500 2.393
Total sulphur mg/kg ISO-20846 - 10.0 8.7
Total sulphur- Top mg/kg ISO-20846 - 10.0 8.7

(B) Tank 2
[0058] The product content of Tank 1 was approx. 9800 KL.bRequisite quantity of the additive formulation (at 15ppm optimized dosage) was calculated i.e. 153kg. To ensure proper mixing, the additive formulation was dosed in the sump tank with recirculation facility. To the existing 3 KL of product in sump tank 153 kg of additive formulation was added using 10KL more of product. The additized HSD was recirculated for 45 min to ensure proper mixing. The additized HSD from the sump tank was pumped to above ground product 2 and while pumping 2400 kl of HSD intermittently product was allowed to settle for 14hrs. The TMB (Top, Middle & Bottom) samples were drawn from tank 2 every 4 hrs and were monitored for appearance parameter (FIG. 3). Samples collected after 14 hours qualified visual appearance and were submitted for Batch formation tests for QC clearance. The results of the QC as shown in Table 3.
Table 3: Quality control report at 15 ppm dosage treatment in tank 2.
Characterstics Units Test methods Specifications Results value
Min Max
Appearance Visual B&C B&C B&C
Colour Visual - - Yellow
Density at 15 °C kg/m3 IS 1448 P:16 810.0 845.0 824.6
Density at 15 °C – Top kg/m3 IS 1448 P:16 810.0 845.0 824.5
Density at 15 °C – Middle kg/m3 IS 1448 P:16 810.0 845.0 824.6
Density at 15 °C – Bottom kg/m3 IS 1448 P:16 810.0 845.0 824.6
Dist-95% v/v recovery °C °C IS 1448 P:18 - 360.0 359.6
Kinematic viscosity at 40°C cst IS 1448 P:25 2.000 4.500 2.395
Flash point abel °C IS 1448 P:20 35.0 - 38.0
CU strip corr for 3 Hr at 50 °C IS 1448 P:15 - 1 1
Four point winter °C IS 1448 P:10 - 3 -3
Cetane index ASTM D4737 46.0 0 53.7
Kinematic viscosity at 40 °C- Top cst IS1447 P:25 2.000 4.500 2.376
Total sulphur mg/kg ISO-20846 - 10.0 8.3
Total sulphur- Top mg/kg ISO-20846 - 10.0 8.4

[0059] Both the tank samples get cleared by Batch formation tests (BFT) within 12-14 hrs. Infact the dosage in case of Tank 2 was only 15 ppm. Thus, Table 2 and Table 3 showed that the additive formulation do not impact the quality of the product.
(v) Synergistic effect
[0060] Each components have different functions for the said application as following: i) Triton X 100 acts as surfactant that interacts with moisture and fuel with equal affinity with well proven HLB of 8-9, ii) Polysorbate 20 & 40 act with higher HLB (12-16) act in unison to coalesce the moisture molecules present along with Triton X 100 to get separated and eventually settle down, iii) Once the water is separated the fuel is free of haziness.
[0061] A labscale study was performed to validate the uniqueness of the formulation of the present invention. This study was carried out using Turbiscan equipment that complies to ASTM D7061 where the output was dimensionless Turbiscan Stability Index (TSI). Higher is the index more is the scattering due to higher particle size and non homogenity.
[0062] The experiment involves making hazy diesel from pure diesel and water using homogenizer and further analyzing for TSI in blank and additive cases. Additive dosage at labscale is fixed at 50 ppm. The TSI value was found 0.3 for the present formulation which showed synergistic effect as shown in Table 4.
Table 4: Synergistic effect of the present formulation.
S. No Additive TSI
1 Blank (no additive) 3.5
2 Polysorbate 20 0.8
3 Polysorbate 40 2.4
4 Triton X 100 2.7
5 LABSA (linear alkyl benzene sulphonic acid) 3.4
7 CTAB (cetyl trimethylammonium bromide) 3.3
6 Polysorbate 20 and Polysorbate 40 (1:1) 3.1
8 Polysorbate 20 and Triton X 100 (1:1) 1.9
9 Triton X 100, Polysorbate 20 and Polysorbate 40 (1:1:1 ) 1.2
10 Present formulation 0.3

ADVANTAGES OF THE INVENTION
[0063] The present disclosure provides a novel additive formulation that clears hazy fuel sample that clear without giving any large settling time of days and weeks.
[0064] The additive formulation of the present disclosure effectively removes the haziness of HSD and improves the appearance of the product to bright and clear.
[0065] The additive formulation of the present disclosure helps in easy emulsification/separation of water.
[0066] The additive formulation of the present disclosure does not impact the quality of the product w.r.t. any parameter as per BIS specifications.
, Claims:1. An additive formulation for removing the haziness of the fuel comprising:
40 to 50 % w/w of an alkylphenylethoxylate surfactant;
20 to 25% w/w of a first emulsifier;
20 to 25 % w/w of a second emulsifier; and
5 to 15 % w/w of a solubilizing agent,
wherein the % w/w is based on the total weight of the formulation.
2. The additive formulation as claimed in claim 1, wherein the alkylphenylethoxylate surfactant is selected from a group consisting of Triton X-100, Tergitol 15, Triton X 115, Triton X 45 and combination thereof.
3. The additive formulation as claimed in claim 1, wherein the first emulsifier is selected from a group consisting of polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, nonyl phenol ethoxylate 20/Tergitol 20 or Tergitol 9 and combination thereof.
4. The additive formulation as claimed in claim 1, wherein the second emulsifier is selected from a group consisting of polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, PEG 200, PEG 400, PEG 600 and combination thereof.
5. The additive formulation as claimed in claim 1, wherein the first emulsifier and second emulsifier are different.
6. The additive formulation as claimed in claim 1, wherein the solubilizing agent is high speed diesel.
7. The additive formulation as claimed in claim 1, wherein the additive formulation is added in the hazy fuel in the range of 5 ppm to 200 ppm.
8. The additive formulation as claimed in claim 7, wherein the fuel is selected form motor spirit, high speed diesel, superior kerosene oil, mineral turpentine oil and any other hydrocarbon based white oils.
9. A method of preparation of an additive formulation for removing the haziness of the fuel comprising:
a) mixing 40 to 50 % w/w of an alkylphenylethoxylate surfactant to 20 to 25 % w/w of a first emulsifier to obtain a first mixture;
b) mixing 20 to 25 % w/w of a second emulsifier to the first mixture to obtain a second mixture; and
c) mixing 5 to 15 % w/w of a solubilizing agent to the second mixture to obtain an additive formulation.
10. The method as claimed in claim 9, wherein the mixing is carried out at a speed in the range of 250 to 600 rpm for a period in the range of 30 min to 3 hrs at a temperature in the range of 25 to 40 °C.