TECHNICAL FIELD
The present disclosure relates to the desalting of crude oil in refineries. Specifically, the present disclosure is directed towards a novel desalter system for desalting of crude oil. More specifically, the present disclosure relates to providing improved process internals in the desalting vessel assembly of the system for desalting of crude oil.
BACKGROUND
The information in this section merely provides background information related to the present disclosure and may not constitute prior art(s).
Crude oil, when extracted from an oil reservoir contains water, salts and suspended solids, collectively called as impurities. These undesired impurities may vary in quantity and quality depending upon the oil reservoir.
Water may be present in large quantities in crude oil extracted from older reservoirs or if crude oil extraction is enhanced using water injection technology. This high amount of water causes increase in the cost of transportation of oil from reservoir to oil refineries. The dehydration systems in off-facilities shall decrease the amount of water in crude oil to 01-03% BS&W Vol.
The crude oil received by refineries contain some amount of impurities, which can adversely affect downstream refining processes by causing fouling, increasing corrosion rates, poisoning catalysts and increasing environmental concerns. The salts which are most frequently present in crude oil are sodium chlorides, calcium chlorides and magnesium chlorides. The salts, at high temperatures in the downstream processing, could form hydrochloric acids, which can corrode the heat exchangers and other downstream equipment. Suspended solids and salts may deposit in heat exchangers causing fouling and reduce the pre-heat capacities of the heat exchangers, sodium, arsenics and other metals may cause poisoning of catalysts. Suspected solids

may get carried to the burners and eventually flue gas, where they would cause problems regarding environmental compliance. Hence, reduction of these impurities in crude oil, lesser than the acceptable limits mentioned in the below table, becomes inevitable before the crude oil is routed to downstream refining.

For crude
oil
refineries Salt content 99% of the inlet salt content or less than or equal to 0.5 ptb, whichever is higher (ptb is pound per thousands of barrels)

Basic Sediments & Water (BS&W less than or equal to 0.2 % volume
Table: Required specification of crude oil after desalting process
A successful desalting of a crude oil depends on the few parameters such as type and properties of crude oil and quantity of impurities in the crude oil. The type of crude and quantity of impurities shall have direct relationship with the size of the desalting vessel. The properties of the crude oil such as surfactants, viscosity, density and size of the impurities, shall affect the selection and design of the system.
A typical desalting vessel consists an inlet distributor, an outlet collector, an effluent collector and a set of electric grids.
Existing desalter systems have the following limitations:
• Properties of crude oil, processed by the refiners, may vary from the original design properties of the refinery. Crude oils available with the refiners keep on changing. This leads to the variation in type and properties of crude oil to be processed. The existing desalting systems are unable to accommodate a wide variation in these properties. Hence, the guarantee in the outlet specification of the desalted crude is mostly unfulfilled, after few months of commissioning of the desalter system.

• The existing technology providers are very limited, and their technologies are very expensive due to the high cost of technology and their proprietary internals.
The present invention overcomes the above limitations of the existing inventions with an efficient, economic and operator-friendly desalter system. This system has a new desalter configuration of internals to meet the required (or better) outlet specifications of the desalted crude. The crude oil inlet to the desalter vessel is separated into two inlets and the flow rates of each of the inlets shall be controlled during the operation of the system, as per the variation in crude oil type/properties. Also, the internals in the present disclosure shall provide a complete laminar flow pattern with better separation of the impurities in the shortest duration possible. The overall life cycle and downtime shall be substantially low.
SUMMARY OF THE PRESENT INVENTION
One or more drawbacks of conventional desalting systems, as described in the prior art have been overcome and additional advantages are provided through a desalting system as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
The present invention relates to desalting system for desalting crude oil. In the desalting system, a desalting vessel comprises a crude-water mixture region defined between an upper portion and a lower portion of the desalting vessel, at least two inlet nozzles configured for admitting crude-water mixture inside the desalting vessel. First inlet nozzle is disposed at the lower portion and second inlet nozzle is placed at the upper portion of the desalting vessel. At least two separate inlet distributor arrangements are disposed on the at least two inlet nozzles for distributing crude-water mixture in the crude-water mixture region. First separate inlet distributor arrangement along with first inlet nozzle delivers crude-water mixture in upward direction whereas

second separate inlet distributor arrangement along with second inlet nozzles delivers crude-water mixture in downward direction so as to creating a counter flow of crude-water mixture at the crude-water mixture region. A plurality of electrostatic grids (Gl, G2, G3, G4, G5, G6) disposed in the crude-water mixture region. The electrostatic grids (Gl, G2, G3) are positioned at center of the desalting vessel whereas the electrostatic grids (G4, G5, G6) are positioned adjacent to the electrostatic grids (Gl, G2, G3). The electrostatic grids (Gl, G2, G3) are aligned horizontally whereas the electrostatic grids (G4, G5, G6) are inclined towards the central axis of the desalting vessel such that an outer end of electrostatic grids (G4, G5, G6) are placed above than an inner end of the electrostatic grids (G4, G5, G6). A plurality electric plates (PI, P2) configured in between the electrostatic grids (G4, G5, G6) and at least one outlet skirt for enhancement of the electrostatic coalescence and to maintain laminar flow of crude into the at least one outlet skirt.
In an embodiment, the plurality of electric plates is inclined from the electrostatic grids (G4, G5, G6) towards at least one outer skirt.
In an embodiment, a plurality of dish ends is disposed at the upper portion of the desalting vessel.
In an embodiment, the plurality of dish ends is connected to the at least one outlet skirt.
In an embodiment, the at least one outer skirt is disposed at the upper portion of the dish end of desalting vessel for collecting desalted crude.
In an embodiment, one or more packing arrangement is connected to the at least one outer skirt for maintaining laminar flow in desalted crude at entry in the at least one outer skirt.

In an embodiment, a plurality of crude outlet nozzles (N2) is disposed at the top of the desalting vessel for collecting desalted crude at outside from the desalting vessel.
In an embodiment, a plurality of outlet channels (03) connects the outer skirts with the crude outlet nozzles for delivering desalted crude towards the crude outlet nozzles.
In an embodiment, a plurality of water/effluent collectors (N3) is placed at the bottom of the dish end of the desalting vessel for collecting effluent water.
In an embodiment, a plurality of outlet nozzles (N4) is disposed at the bottom of the desalting vessel (1) for eliminating solid/metal impurities, separated from crude oil in the desalting vessel (1).
In an embodiment, the plurality of water/effluent collectors (N3) comprises one or more effluent nozzles for eliminating the collected effluent from the desalting vessel.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent with reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The novel features and characteristics of the disclosure are set forth in the appended description. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
Figure 1 illustrates a sectional view of the desalter vessel assembly according to the

present disclosure.
Figure 2 illustrates a perspective side view of the desalter vessel assembly according to the present disclosure.
The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the assemblies and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
While the invention is subject to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the figures and will be described below. It is to be noted that a person skilled in the art can be motivated from the present disclosure and can perform various modifications. However, such modifications should be construed within the scope of the invention.
The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that an assembly, setup, system, device that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system or device or setup. In other words, one or more elements in the system or apparatus or device proceeded by "comprises a" does not, without more constraints, preclude the existence of other elements or additional elements in the assembly or system or apparatus.
Accordingly, it is an aim of the present disclosure to provide a desalting system that provides improved outlet specification of the desalted crude.
Another aim of the present disclosure is to develop a desalting system that is operator-friendly and economical.

Another aim of the present disclosure is to develop a desalting system having design flexibility.
Accordingly, the present disclosure discloses an improved desalting system for desalting crude oil. The improved desalting system may have different sizes which correspond to the varying properties of crude oil. The improved desalting system is being referred hereinafter in the specification as desalting vessel.
It should be understood that above configuration is for the sake of describing the invention properly. There may be other configurations which will be obvious to person skilled in the art in view of the present patent application.
Accordingly, the present disclosure relates to the construction of a desalting system. Further, embodiments of the present disclosure disclose a desalting system for eliminating suspended solids and salts that are frequently present in crude oil in the form of sodium chlorides, calcium chlorides and magnesium chlorides, from the crude oil.
Reference will now be made to the desalting vessel which is explained with the help of figures. The figures are for the purpose of illustration only and should not be construed as limitations on the assembly of the present disclosure. Wherever possible, referral numerals will be used to refer to the same or like parts.
Figure 1 illustrates a desalting vessel (1). The desalting vessel (1) may have cylindrical shape. The desalting vessel is positioned as it longitudinally parallels to earth surface. The diameter and length of the desalting vessel (1) may be designed as per the crude properties & other design conditions. For desalting of crude oil, water (with very less salt) is injected and mixed into the crude oil in the piping before the crude is routed to the desalting vessel (1). In an exemplary embodiment, the quantity of fresh water mixed into the crude oil is 5 - 7 %Vol of the Crude oil.

The desalting vessel comprises a crude-water mixture region (CW) defined between an upper portion (UP) and a lower portion (LP) of the desalting vessel (1), at least two inlet nozzles (Nl A, NIB) and at least two separate inlet distributor arrangements (IDA & IDB). First inlet nozzle (Nl A) is disposed at the lower portion (LP) whereas second inlet nozzle (NIB) is placed at the upper portion of the desalting vessel. The inlet nozzles (N1A, NIB) are configured for admitting crude-water mixture inside the desalting vessel (1).
The at least two separate inlet distributor arrangements (IDA, IDB) are configured for distributing crude-water mixture in the crude-water mixture region. First separate inlet distributor arrangement (IDA) is configured with first inlet nozzle (Nl A) and second separate distributor arrangement (IDB) is configured with second inlet nozzle (NIB). The separate inlet distributor arrangements (IDA, IDB) distribute the Crude-water mixture at different flow rates in the desalting vessel (1), as per the design requirement. Both the flows from separate inlet distributor arrangements (IDA, IDB) are distributed in to the centre of the electrostatic zone in between a plurality of grids (Gl, G2, G3, G4, G5, G6). There may be more numbers of similar distribution locations, depending on the vessel size, which further depends on the properties of the crude oil.
In an embodiment, the first separate inlet distributor arrangement (IDA) along with the first inlet nozzles (Nl A) delivers crude-water mixture for distribution in upward direction whereas the second separate inlet distributor arrangements (IDB) along with the second inlet nozzles (NIB) delivers crude-water mixture for distribution in upward direction so as to creating a counter flow of crude-water mixture in the crude-water mixture region (CW).
As the crude-water mixture gets distributed in the desalter vessel (1), the maximum amount of water/effluent and suspended solids fall in downward direction due to gravity and their higher densities and the maximum amount of crude oil moves upwards. The water collected in the bottom of the desalting vessel (1) shall be

removed through a plurality of water/effluent collectors (EC). The plurality of water/effluent collectors (EC) is placed at the bottom of the dish end of the desalting vessel (1). The collected effluent is drawn out through one or more effluent nozzles (N3). The effluent nozzles (N3) are configured with the plurality of water/effluent collectors (EC) for eliminating the collected effluent at the bottom of the desalting vessel (1).
The desalting vessel (1) further comprises of a plurality of dish ends in the upward direction. The plurality of dish ends is disposed at the upper portion (UP) of the desalting vessel (1). Due to the density difference, crude oil flows towards the top of dish ends of the desalting vessel (1). The dish ends are connected to a plurality of outlet skirts (01), wherein the outlet skirts (01) shall collect desalted crude through a skirt packing arrangement (02). The horizontal laminar flow towards the outlet skirts (01) along the electrostatic field between the electric grids (Gl, G2, G3, G4, G5, G6) shall enhance coalescence of small water droplets. The bigger water droplets, formed, shall fall towards the bottom of the vessel due to gravity and density difference.
The plurality of electrostatic grids (Gl, G2, G3, G4, G5, G6) is disposed in the crude-water mixture region in which the electrostatic grids (Gl, G2, G3) of the plurality of electrostatic grids (Gl, G2, G3, G4, G5, G6) are positioned at center of the desalting vessel whereas the electrostatic grids (G4, G5, G6) of the plurality of electrostatic grids (Gl, G2, G3, G4, G5, G6) are positioned adjacent to the electrostatic grids (Gl, G2, G3).
The electrostatic grids(Gl, G2, G3, G4, G5, G6) are also optimized with low density field at the centre of the desalting vessel (1) between the electric grids i.e. (Gl, G2, G3) and high-density field between the electric grids i.e. (G4, G5, G6) towards the outlet skirts (01).
According to an embodiment of the present disclosure, the electrostatic grids (Gl, G2, G3) are aligned horizontally in the desalter vessel (1) whereas the electrostatic grids

(G4, G5, G6) are upwardly inclined towards the central axis of the desalting vessel (1) such that an outer end of electrostatic grids (G4, G5, G6) are placed above than an inner end of the electrostatic grids (G4, G5, G6).
The present arrangement optimizes the usage of total power consumption of the desalting vessel (1). Also, as shown in Figure 1, the desalting vessel (1) comprises a plurality of downwardly inclined horizontal electric plates (PI, P2). The horizontal electric plates (PI, P2) are placed in between the electrostatic grids (G4, G5, G6) and at least one outlet skirt (01) of the desalting vessel (1) for dual purposes which includes enhancement of the electrostatic coalescence and to maintain laminar flow of the desalted crude into the outlet skirts (01). A plurality of electric plates (PI, P2) are inclined from the electrostatic grids (G4, G5, G6) towards at least one outer skirt (01). As the crude oil flows from centre of desalting vessel (1) towards the outlet skirts (01) on either side of the desalting vessel (1), the crude oil shall pass through the electrostatic grids (G4, G5, G6) and electric plates (PI, P2).
The outer skirts (01) are disposed at the upper portion (UP) of the desalting vessel (1) for collecting desalted crude. The outlet skirts (01) are further provided with a plurality of packing arrangements (02) for further enhancement of the removal of smaller water droplets. From the outlet skirts (01), the desalted crude shall be diverted to a plurality of crude outlet nozzles (N2) through a plurality of outlet channels (03). The crude outlet nozzles (N2) are disposed at the top of the desalting vessel (1) for collecting desalted crude at outside from the desalting vessel (1). The outlet channels (03) that connect the outer skirts (01) with the crude outlet nozzles (N2) for delivering desalted crude towards the crude outlet nozzles (N2).
As shown in figure 1, the desalting vessel comprises a plurality of outlet nozzles (N4). The outlet nozzles (N4) are located at the bottom of the desalting vessel (1). The outlet nozzles (N4) are configured for eliminating solid/metal impurities, collected at the bottom of the desalting vessel (1).

The present desalting vessel (1) provides controlled turbulence and operational flexibility as it allows counter flow of crude-water mixture from two separate inlet distributor arrangements (IDA, IDB). The incoming crude-water mixture is divided outside the desalting vessel (1) into two inlets (Nl A, NIB) and sent into the desalting vessel (1) through two different nozzles. Each inlet is distributed at different elevations inside the desalting vessel (1).
The first inlet distributor (IDA) is located below the electrostatic grids (Gl, G2, G3, G4, G5, G6). The first inlet distributor (IDA) directs the crude-water mixture towards the upward direction. The second inlet distributor (IDB) is located above the electric grids. The second inlet distributor (IDB) directing the crude-water mixture towards the downward direction. Depending on the type of crude oil, amount of salt and water in the crude-water mixture, the ratio of the flow rates of the two inlets are controlled outside the desalting vessel (1) with a flow control valve.
As shown in figure 2, the present desalting vessel (1) also provides the use of complete volume of the desalting vessel (1) since the outlet collector (01) are adapted to be received on the corners of the desalting vessel (1) with skirt arrangements in the dish ends of the desalting vessel (1). The desalting vessel (1) also provides low power consumption due to optimized design of electrostatic grids to consume minimum electric power. Since, there is low density grids at centre and high-density grids nearer to the dish ends of the desalting vessel (1), the arrangement reduces power consumption to an extent.
The separation efficiency of the crude water mixture is also substantially increased by providing a flow pattern which is horizontal and laminar flow along the complete length of the electric field and the use of dish end volumes of the desalter vessel (1). The packing (02) provided at the entry of the outlet skirts (01) shall enhance the laminar flow. The electric plates (PI, P2) provided before the outlet skirts (01) eliminates the local turbulence at the entry of the outlet skirts (01) thereby increasing the separation efficiency.

In summarized form, the present invention relates to a unique design of desalting vessel (1) that has controlled turbulence and operation flexibility as counter flow of crude-water mixture from two inlet distributor arrangements (N1A, NIB), which routes the crude-water mixture into the electrostatic field from opposite direction from each other (Top & Bottom). The incoming crude-water mixture is separated into two streams, outside the desalting vessel (1), with flow control valves. The separated streams are routed into the desalting vessel (1) through two different nozzles. Each inlet is distributed at different elevations inside the desalting vessel (1). First inlet distributor (Nl A) is located below the electrostatic grids (Gl, G2, G3, G4, G5, G6), directing the crude-water mixture towards upwards into the centre electric grids (Gl, G2, G3) and second inlet distributor (NIB) is located above the electric grids (Gl, G2, G3, G4, G5, G6) and directing the crude-water mixture towards downwards into the centre electric grids (Gl, G2, G3). Depending on the properties of crude oil, amount of salt and water, the ratio of the flow rates of the two inlets (Nl A, NIB) are controlled outside the desalting vessel (1) with a flow control valve. Outlet collector with skirt arrangements located in the dish ends of the desalting vessel (1) utilizes the complete volume of the desalting vessel (1) for separation and settling of the water droplets from crude oil. This enhances the residence time of the fluids inside the desalting vessel (1). Optimized design of electrostatic grids (Gl, G2, G3, G4, G5, G6) to consume minimum electric power: low density grids (Gl, G2, G3) at centre and high-density grids (G4, G5, G6) nearer to the dish ends of the desalting vessel (1) ensures the power consumption of the desalting system (1) is optimized for the required performance. Flow pattern is horizontal and laminar flow along the complete length of the electric field, when the crude oil flows from the centre of the desalting vessel (1) to the dish end of the desalting vessel (1). Coalesce packing is used to provide an additional coalescence of the left-over water droplets in the crude oil, before the oil enters the crude outlet pipes or nozzles. This also helps to provide laminar flow patterns to the oil entering the outlet skirts (01). The electric plates (PI, P2) before the outlet skirts (01) eliminate the local turbulence at the entry of the outlet skirts (01) to maintain the laminar flow in the end part of the desalting vessel (1).

A list of reference numerals corresponding to the components of the desalting vessel of the present disclosure is following:

Description Reference signs
Desalting Vessel 1
Crude-water mixture region CW
Upper portion UP
Lower portion LP
First inlet nozzle N1A
Second inlet nozzle NIB
First inlet distributor IDA
Second inlet distributor IDB
Horizontally placed grids Gl, G2, G3
Inclined grids G4, G5, G6
Electric inclined plates P1,P2
Effluent collectors EC
Effluent outlet nozzles N3
Outlet skirts 01
Plurality of packing arrangements 02
Outlet channels 03
Crude outlet nozzles N2
Outlet nozzles N4

Equivalents:
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "having" should be interpreted as "having at least," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

We Claim:
1. A desalting vessel (1) for desalting crude oil, the desalting vessel comprising:
a crude-water mixture region defined between an upper portion and a lower portion of
the desalting vessel;
at least two inlet nozzles (Nl A, NIB) configured for admitting crude-water mixture
inside the desalting vessel wherein first inlet nozzle (N1A) is disposed at the lower
portion and second inlet nozzle (NIB) is placed at the upper portion of the desalting
vessel;
at least two separate inlet distributor arrangements (IDA, IDB) disposed on the at least
two inlet nozzles (Nl A, NIB) for distributing crude-water mixture in the crude-water
mixture region, wherein first separate inlet distributor arrangement (IDA) along with
first inlet nozzle (N1A) delivers crude-water mixture in upward direction whereas
second separate inlet distributor arrangement (IDB) along with second inlet nozzle
(NIB) delivers crude-water mixture in downward direction so as to creating a counter
flow of crude-water mixture at the crude-water mixture region;
a plurality of electrostatic grids (Gl, G2, G3, G4, G5, G6) disposed in the crude-water
mixture region, wherein the electrostatic grids (Gl, G2, G3) are positioned at center
of the desalting vessel and the electrostatic grids (G4, G5, G6) are positioned adjacent
to the electrostatic grids (Gl, G2, G3);
wherein the electrostatic grids (Gl, G2, G3) are aligned horizontally whereas the
electrostatic grids (G4, G5, G6) are inclined towards the central axis of the desalting
vessel such that an outer end of electrostatic grids (G4, G5, G6) are placed above than
an inner end of the electrostatic grids (G4, G5, G6).
a plurality electric plates (PI, P2) configured in between the electrostatic grids (G4,
G5, G6) and at least one outlet skirt (01) of the desalting vessel for enhancement of
the electrostatic coalescence and to maintain laminar flow of desalted crude into the
at least one outlet skirt (01).
2. The desalting vessel (1) as claimed in claim 1, wherein the plurality of electric plates
(PI, P2) are inclined from the electrostatic grids (G4, G5, G6) towards at least one
outer skirt (01).

3. The desalting vessel (1) as claimed in claim 1, wherein a plurality of dish ends is disposed at the upper portion of the desalting vessel (1).
4. The desalting vessel (1) as claimed in claim 3, wherein the plurality of dish ends is connected to the at least one outlet skirt (01).
5. The desalting vessel (1) as claimed in claim 1, wherein the at least one outer skirt (01) is disposed at the upper portion of the dish ends of desalting vessel for collecting desalted crude.
6. The desalting vessel (1) as claimed in claim 1, wherein one or more packing arrangement (02) is connected to the at least one outer skirt (01) for maintaining laminar flow in desalted crude at entry in the at least one outer skirt (01).
7. The desalting vessel (1) as claimed in claim 1, wherein an outlet channel (03) connects the at least one outer skirt (01) with the crude outlet nozzle (N2) for delivering crude towards the crude outlet nozzle (N2).
8. The desalting vessel (1) as claimed in claim 1, wherein crude outlet nozzles (N2) are disposed at the top of the desalting vessel (1) for collecting desalted crude, from the outlet channels (03), to route the desalted crude outside the desalting vessel (1).
9. The desalting vessel (1) as claimed in claim 1, wherein a plurality of water/effluent collectors (EC) is placed at the bottom of the dish end of the desalting vessel for collecting effluent water.
10. The desalting vessel (1) as claimed in claim 9, wherein the plurality of
water/effluent collectors (EC) comprises one or more effluent nozzle (N3) for
eliminating the collected effluent from the desalting vessel (1).

11. The desalting vessel (1) as claimed in claim 1, wherein a plurality of outlet nozzles (N4) is disposed at the bottom of the desalting vessel (1) for eliminating solid/metal impurities, separated from crude oil in the desalting vessel (1).