RU2680601C1 - Mobile unit for the preparation of intermediate layers of oily liquid - Google Patents

Abstract

FIELD: oil and gas industry.SUBSTANCE: invention relates to oil industry and can be used in processing of oil sludge of the crude oil treating plant (COTP) for the separation of resistant oil-water emulsions of intermediate layers. Invention relates to a mobile unit for the preparation of intermediate layers of oily liquid, comprising hydraulically connected equipment, including a balancing tank, a decanter, a centrifuge, an intermediate oil tank, finished oil tank, heavy water tank (aqueous phase of petroleum product), sludge tank, heat exchange equipment, demulsifying agent supply preparation unit with pumps, flocculant preparation and supply unit with pumps, a nitrogen station with the possibility of preparing compressed air for the needs of instrumentation and control, a process piping system, an automatic unit control system, located in several containers placed one on the other in two tiers.EFFECT: reducing the amount of oil sludge in storage barns without exporting it beyond the crude oil treating plant (COTP), increasing the efficiency of using periodically operating equipment for the separation of persistent water-oil emulsions of intermediate layers.1 cl, 3 dwg

Description

The invention relates to the oil industry and can be used in the processing of oil sludge oil field treatment plants (UPPN) for the separation of persistent water-oil emulsions of the intermediate layers accumulated in the RCS, as well as the periodic processing of oil-containing liquid phases of oil storage barns.

State of the art

A known method of processing persistent oil emulsions containing mechanical impurities (RF patent No. 92010761, class IPC C10G 33/04, published date 12/27/1995), including heating, mixing a stable oil emulsion with a light hydrocarbon liquid and an aqueous solution of a demulsifier, and upholding. The oil emulsion is first mixed with a light hydrocarbon liquid at thermobaric parameters excluding the evolution of the gas phase, and then the mixture is dispersed in an aqueous solution of the demulsifier at the thermobaric parameters of the separated gas phase, and hydrocarbon gas is passed through the aqueous demulsifier solution. The disadvantage of this method is the applicability of the listed equipment only in stationary conditions.

A known method for the preparation of barn oil (RF patent No. 2169169, class IPC C10G 33/04, published date 06/20/2001), in which the oil is diluted with a hydrocarbon solvent to break the emulsion, then commercial oil and polar oil are introduced into the resulting mixture of oil and solvent non-electrolyte, after which the mixture is heated to 60-80 C. After that, a demulsifier is introduced into the mixture, and then an alkaline additive, followed by sedimentation and water separation. In this case, the liquefaction of the barn oil with a hydrocarbon solvent is carried out to the required oil viscosity. The disadvantage of this method is the applicability of the listed equipment only in stationary conditions.

A known installation for processing barn hydrocarbons (RF patent 116856, IPC C01G15 / 08, published date 10.06.2012), including an open barn with feedstock, a line with a pump for supplying feedstock from the barn to a mixing tank with crude oil, a line with a heat exchanger for supply to the mixing tank with crude oil, a line with a pump for pumping the mixture into a buffer tank with a heat exchanger for heating the compounded mixture, a line with a pump for feeding the heated mixture to the decanter, a line for discharging solid particles from the decanter, a line for draining oil from the decanter, a line about water flows from the water tanks and decanter above, wherein, in the bypass line between the pump and the decanter is set high frequency current generator. The disadvantage of the installation is the lack of a centrifuge and the stationary execution of the installation itself.

Known mobile installation for cleaning tanks from oil sludge and asphalt tar and resin deposits (RF patent No. 71911, class IPC B08B 3/08, publication date. 03/27/2008), including a tank for working fluid, engine room, hydraulic system, including stop valves and pump unit , the capacity of petroleum products placed on one vehicle. In addition, the installation is equipped with a coalescence-flotation separator, in which the phase separation of the emulsion into oil product, working fluid and mechanical particles, as well as cleaning of the working fluid and oil product vapors pumped from the cleaned reservoir, takes place. The installation includes a system of gas-air heating of the working fluid, which is used as water, liquid hydrocarbons or aqueous solutions of detergents. The pump unit includes an emulsion transfer pump and an oil product transfer pump, a high-pressure pump for supplying a working fluid, a solution transfer pump, a submersible screw pump for lifting high-viscosity oil products and an ejector pump. The disadvantage of this installation is the applicability of the listed equipment only in stationary conditions.

The closest in constructive solution and technical result achieved is a mobile installation of three-stage separation of oil sludge (http://otrabotka.com), manufactured by Huning Umwelttechnik (Germany), mounted on a metal frame, the length of the container is about 12. Equipment located in one tier , includes a pump that pumps raw materials into a vibratory separator, before feeding them into which the raw materials are heated to 50 ° C by pre-mixing with already separated and heated oil sludge. In a vibratory separator, solids of more than 1 mm in size are screened out in a screw conveyor for directing to the MSW tank. The liquid phase of the oil emulsion is collected in an intermediate tank with a stirrer to homogenize the liquid and prevent precipitation of the remaining solid phase. Part of the liquid from the same tank is pumped out for use in the heating cycle of the feedstock, the rest is sent to the decanter, after heating the mixture in a heat exchanger. The solid phase (mechanical impurities) is sent from the decanter to the sludge collection tank. The raw material heated in the intermediate heat exchanger is sent to the inlet of the three-phase centrifuge, after which the solid precipitate from the centrifuge is sent to the MSW container. The unit is equipped with two 250-liter tanks with demulsifiers with metering pumps. Pure oil is accumulated in a separate tank. Water recovered from oil sludge is additionally filtered and accumulated in the tank. Coarsely refined petroleum products are returned back to the inlet of the decanter. The disadvantage of this installation is the large dimensions of the installation, which complicates the process of moving it along highways and dirt roads.

Disclosure of invention

The objective of the invention is to provide a mobile device for separating persistent water-oil emulsions of intermediate layers accumulated in oil and gas fields in vertical steel tanks (PBC), as well as periodically processing oil-containing liquid phases of oil storage tanks with the release of them oil phase (target product), aqueous phase and sludge.

The technical result achieved when using this invention is to reduce the amount of oil sludge in storage barns without taking it outside the field oil treatment unit (UPPN), as well as to increase the efficiency of using periodically operating equipment designed to separate persistent water-oil emulsions of intermediate layers .

The technical result is ensured due to the fact that the preparation of industrial layers from storage barns is carried out using a mobile unit including hydraulically coupled equipment, including averaging tank, decanter, centrifuge, intermediate oil tank, finished oil tank, heavy water tank (aqueous oil product phases), oil sludge capacity, heat exchange equipment, demulsifier feed preparation unit with pumps, flocculant preparation and supply unit with pumps, nitrogen station the possibility of preparing compressed air for the needs of instrumentation and automation, a system of process pipelines, an automatic control system for the installation, located in several containers located on top of each other in two tiers, with the outlet of the storage barn through a plate heat exchanger located in container No. 1 of the lower tier, hydraulically connected to the entrance of the averaging tank of the container No. 2 of the upper tier, the exit from the tank-averaging is hydraulically connected to the entrance to the decanter located in the container No. 3 of the upper tier, at the volume of one of the outputs of the decanter is hydraulically connected to a centrifuge located in the same container as the decanter, the other output of the decanter is hydraulically connected to the capacity for collecting heavy water (aqueous phase of the oil emulsion) placed in the container No. 4 of the lower tier, and the next exit from the decanter is connected a pipeline with a sludge collection tank located in a container No. 1 of the lower tier, while in one of the exits of the centrifuge placed in a container No. 3 of the upper tier, it is hydraulically connected to the inlet of the finished oil tank of the container No. 1 of the lower tier tier, another outlet of the centrifuge is hydraulically connected to the collection tank of heavy water (aqueous phase of the oil emulsion) located in the container No. 4 of the lower tier and the next outlet of the centrifuge is connected by a pipeline to the collection tank of oil sludge located in the container No. 1 of the lower tier, the demulsifier dosing system, located in the container No. 6 of the lower tier, hydraulically connected to the inlet of the averaging container of the container No. 2 of the upper tier and the pipeline for supplying the oil emulsion to the decanter of the container No. 3 of the upper tier, while the system flocculant ozonization, located in the container No. 6 of the lower tier, is hydraulically connected to the inlet-averaging capacity of the container No. 2 of the upper tier and the pipeline for supplying the oil emulsion to the decanter of the container No. 3 of the upper tier, while the outlet of the nitrogen station located in the container No. 5 of the lower tier is hydraulically connected with the entrance of the decanter and the entrance of the centrifuge located in the container No. 3 of the upper tier.

Brief Description of the Drawings

In FIG. 1 shows a conditional layout of the containers of the upper and lower tiers. In FIG. 2 shows a diagram of the connection of equipment in containers of a mobile unit for the preparation of intermediate layers of oil emulsion at the first separation stage. On

FIG. Figure 3 shows the connection diagram of the equipment in the containers of a mobile unit for the preparation of intermediate layers of oil emulsion in the second separation stage.

The implementation of the invention

The design of the mobile unit for the preparation of intermediate layers of oily liquid is made in the form of several containers with the necessary equipment located inside. The containers are placed in two tiers, ensuring unimpeded joint operation of all equipment units and ensuring their rigidity during transportation to the UPPN territory. The operating mode of the mobile unit for the preparation of intermediate layers is periodic. The overall dimensions of the equipment make it possible to transport it by road on public roads. It is possible to install blocks with all infrastructure and life support facilities on a limited site of the existing facility: area - not more than 800 m ² . The productivity of the mobile unit for the preparation of intermediate layers is up to 10 m ³ / h at the flow to the decanter; in the preparation of the intermediate layers from the barn - 5 ÷ 10 m ³ / h, depending on the composition at the entrance. An oil emulsion for processing is accumulated in a stationary storage barn.

Containers 1, 4, 5, 6 are located on the lower tier of the mobile unit. Containers 2, 3 are located on the upper tier (Fig. 1).

The following units of equipment are located inside the container No. 1 of the lower tier: a dual mechanical rough filter 7, a screw pump 8, a plate heat exchanger 9, a screw pump 10 for supplying oil emulsion to decanter 18, a tank for finished oil 11, a screw pump 12 for delivering a finished product (oil) , oil sludge tank 13, diaphragm pump (pneumatic drive) 14, slurry screw pump 15 (for transporting the solid phase after decanter 18).

The following equipment is located inside the container No. 2 of the upper tier: averaging tank 16 with a stirrer and heating element, plate heat exchanger 17.

Inside the container No. 3 of the upper tier there are: a 3-phase decanter with inertization (for example, Petromaster CF6000), a mass flow meter 19 of the product inlet to the decanter 18, a mass flow meter 20 of the product inlet in the centrifuge, a centrifuge 21 3-phase plate (for example, OSE 80-01-537 / 50), plate heat exchanger 22 (for heating oil before a centrifuge).

Inside the container No. 4 of the lower tier are: the oil product tank 23 (light phase after decanter 18) with a heating element, a screw pump 24 for supplying oil to a centrifuge 21, fine filters 25 and 26, a heavy water (aqueous) tank of phase 27, a centrifugal pump 28 (aqueous phase after decanter and centrifuge).

Inside the container No. 5 of the lower tier there is a steam plate heat exchanger 29, a centrifugal pump 30 (intermediate heat carrier), a steam source from external networks 31, a nitrogen station 32 with compressed air extraction, including a compressor, a dryer, a compressed air receiver, a filter unit, a nitrogen generator, intermediate nitrogen receiver, accumulative nitrogen receiver.

Inside the container No. 6 of the lower tier, power cabinets 33 of the control panel, a demulsifier dosing unit 34, a flocculant dosing unit 35 are placed. The mobile unit is mounted on a rigid frame with wheels.

Under the conditions of using this mobile installation at the facilities of LUKOIL-Perm LLC, its design capacity is about 19 m3 / hour at the input of the initial product. At the outlet of the installation, the product parameters are: the light phase (oil fraction) is flooded to 1%, the content of solids is not more than 0.05%.

The piping system includes: a pipe 38 for supplying raw materials, connecting a stationary storage device (barn) with an input dual mechanical strainer 7 (Fig. 2);

a pipe 39 for supplying an oil emulsion purified from solid particles from a screw pump 8 to the inlet of the heat exchanger 9, '

a pipe 40 for supplying a heated oil emulsion, connecting the heat exchanger 9 with the inlet of the pump 10;

a pipe 41 for supplying a heated oil emulsion, connecting the output of the pump 10 with the input of the averaging tank 16;

a pipe 42 for supplying oil emulsion for additional heating, connecting the tank-averager 16 with a heat exchanger 17;

- pipeline 43 for supplying the heated oil emulsion from the heat exchanger 17 to the inlet of the flow meter 19 of the decanter 18;

a pipe 44 for supplying a heated oil emulsion through a flow meter 19 to the inlet of the decanter 18;

a pipe 45 for supplying a metered demulsifier from a dosage unit for demulsifier 34 to decanter 18 (Fig. 2);

- pipeline 46 for supplying the dosed reagent from the flocculant dosing unit 35 to the averaging tank 16 (Fig. 2);

- a pipeline 47 for supplying a demulsifier from a dosage unit for a demulsifier 34 to the averaging tank 16 (Fig. 2);

a pipe 48 for supplying flocculant from the dosage unit of flocculant 35 to decanter 18 (Fig. 2);

- a pipeline 49 of the output of the oil (light) phase, connecting the output of the decanter 18 with the input of the capacity of the oil product 23;

-pipeline 50 of the drain of the finished oil from the decanter 18 into the tank of the finished oil 11 (Fig. 2);

-the pipeline 51 of the removal of oil, connecting the output of the tank of oil 23 with the inlet of the pump 24;

the pipe 52 of the drainage of the aqueous (heavy) phase, connecting one of the outputs of the decanter 18 with the input of the capacity of the heavy phase 27 (Fig. 2);

-pipe 53 of the removal of the heavy phase, connecting one of the outputs of the centrifuge 21 with the input of the capacity of the heavy phase 27 (Fig. 2);

-pipe 54 removal of solid impurities (cake) from the decanter 18 into the receiving chamber of the tank for collecting oil sludge 13 (Fig. 2);

- pipe 55 for drainage of the oil (light) phase to the second separation stage, connecting the oil tank 23 with the inlet of the heat exchanger 22; pipe 56 connects the output of the pump 24 to the inlet of the heat exchanger 22 - pipe 57 of the finished oil discharge, connecting the finished oil tank 11 to the stationary finished tank oil UPPN (Fig. 3),

-pipeline 59 of the drain through the pumps 14, 12 of the oil phase purified from water, connecting one of the outputs of the centrifuge 21 with the inlet of the finished oil tank 11 (Fig. 3);

- the pipeline 60 of the removal of oil sludge from the centrifuge 21 into the tank for collecting oil sludge 13 (Fig. 3);

-the pipe 61 of the coolant inlet to the heat exchanger 22 from the heat exchanger 29 (Fig. 3);

a pipe 62 for supplying a cooled coolant from a heat exchanger 22 to a heat exchanger 29 (Fig. 3);

- a pipe 63 for supplying nitrogen from the nitrogen station 32 to the centrifuge 21 (Fig. 3);

- a pipe 64 for supplying nitrogen from the nitrogen station 32 to the decanter 18 (Fig. 3);

- pipe 65 for supplying the heated coolant from the heat exchanger 29 to the heat exchanger 9;

the pipe 37 of the outlet of the cooled intermediate carrier, connecting the heat exchanger 29 with the heat exchanger 9 (Fig. 3).

Installation works as follows:

Designed for cleaning industrial or oil emulsion with a water content of 5-90%, oil 10-95%, with a solids content of up to 30% under a pressure of not more than 0.15 MPA in the temperature range + 5 ... + 75 ° C from a storage barn through the pipe 38 (Fig. 2) sent to the input of the dual mechanical mesh filter 7, the cell of the perforated mesh which does not exceed 3 × 3 mm, where the flow is cleaned of large mechanical particles. The design of the filter 7 allows you to clean or replace the filter element without stopping the process. The filter 7 is equipped with pipelines for the removal of associated gases and the discharge of sludge into the drainage. The signal about the need to replace the filter element of the filter 7 comes from the difference in the readings of the pressure sensors installed at the inlet and outlet of the filter 7 (not shown in Fig. 1-3).

The oil emulsion purified from large solid particles is fed through a screw pump 8 (flow rate of about 20 m3 / h) through a pipe 39 to a plate heat exchanger 9 (thermal load up to 154 kW) of preheating. The flow of the oil emulsion is controlled by a frequency converter. In the heat exchanger 9, the oil emulsion is heated by an intermediate heat carrier of the heat exchanger 29, supplied by the pump 30 through the pipe 37, to 70 ... 90 ° C. The heated oil emulsion through pipeline 41, by a screw pump 10, is directed to the inlet of the averaging tank 16 (a tank of the order of 15 m3), which contains a stirrer and a heating heater, which maintains the temperature of the oil emulsion in order to prevent crystallization of paraffin in the averaging tank 16. Measurement of the initial temperature the product in the tank-averager 16 is carried out using temperature sensors. The volume of the averaging tank 16 is about 15 m3. To create uniformity of the entire volume of the processed product, the tank is equipped with a low-speed mixer (not shown in Fig. 1-3). Monitoring the filling level of the tank is carried out by four levels of relays, signaling an emergency level of filling.

The heating of the initial product is carried out in two stages: pre-heating the oil emulsion in the heat exchanger 9, received in the tank-averaging 16 through the pipe 41, hydraulically connecting the elements of the container 1 of the lower tier and the container 2 of the upper tier. The final heating of the oil emulsion received from the averaging tank 16 through the pipe 42 is carried out in the flow heat exchanger 17 to the optimum level of the separation temperature, after which the flow is sent further through the pipe 43, which hydraulically connects the container 2 of the upper tier with the container 3 of the upper tier, through a mass flow meter 19 mounted on the pipe 44 immediately before entering the decanter 18. Using the frequency converter of the oil emulsion pump 10, the volume of the feed Nogo feedstock in decanter 18 via conduits 38, 39, 40, 41, 42, 43, 44.

For the most effective coagulation of mechanical particles, as well as for “breaking” the oil emulsion at all stages of centrifugal separation, the unit is equipped with an automatic demulsifier dosing unit 34 and a flocculant dosing unit 35. Blocks 34 and 35 are equipped with technological tanks with mixers and metering pumps (in FIG. 1-3 are not shown). The metered flocculant or demulsifier is supplied from blocks 34, 35 located in the lower tier container 6, either to the reducing tank 16 of the upper tier container 2 via pipelines 45, 46 or through pipelines 47, 48 directly to the pipeline 44 for supplying the oil emulsion to the decanter 18 containers 3 of the upper tier.

The first stage of separation of the oil emulsion (Fig. 2) in the decanter 18 is carried out as follows: the oil emulsion heated to a temperature of 80 ... 90 ° C is fed to the decanter 18. In the decanter 18, the oil emulsion, under the action of centrifugal forces, is divided into three phases: oil (light ), water (heavy) and solid (solids).

The oil (light) phase, which is the target product of the processing of industrial layers, is discharged through a pipe 49 from decanter 18 due to gravity (by gravity) through a hydraulic shutter of the separation system and collected in the oil product container 23 of the lower tier container 4. The technological scheme allows the oil (light) phase in the form of a finished oil product to be sent from decanter 18 via a pipeline 50 to a tank of finished oil 11 located in the container 1 of the lower tier. The capacity of the oil product 23 has an approximate volume of the order of 5 m3, is equipped with a heating element.

The aqueous phase (heavy), having a higher density, concentrated in the layer on the inner wall of the drum of the decanter 18, is removed by gravity through the pipe 52 - from the decanter 18, through the pipe 53 from the centrifuge 21, through a centrifugal pump 28 located in the container 3 of the upper tier , in the tank 27 of the heavy phase, the volume of which is about 5 m3. The control of the filling level of the tank 27, located in the container 4 of the lower tier, is carried out by four level switches showing the technological level of filling, protecting the centrifugal discharge pump of the aqueous phase 28 from dry operation. Pumping the aqueous phase into a stationary pipeline is carried out under a pressure of not more than 0.3 MPa. At the outlet of the installation, a flange connection or the possibility of connecting a flexible sleeve through a quick disconnect connection is provided on the aqueous phase pipeline. The discharge pressure created by the pump 28 provides a guaranteed output of the aqueous (heavy) phase.

Solid impurities (cake) are discharged from the decanter 18 to the receiving chamber of the oil sludge tank 13 through a pipe 54, and then, pump 15 is transported outside the installation and discharged into the MSW container. The signal to turn on and off the screw pump 15 is supplied from the load cells, on which the solid phase discharge channel is installed. Using a temperature switch, continuous monitoring is carried out at the lower point of the cake discharge channel.

The second stage of the separation of oil preparation (Fig. 3)

The oil (light) phase is removed from the oil product tank 23 by a screw pump 24 under pressure and at a temperature of 70 ... 80 ° C, through twin filters 25, 26 through pipeline 55 and sent to the second separation stage.

The capacity of the oil product 23 has an approximate volume of the order of 5 m3, is equipped with a heating element. Monitoring the filling level of the tank 23 is carried out by four relays of different levels, preventing the “idle” operation of the screw pump 24 for supplying oil emulsion through the pipe 51, through the plate heat exchanger 22, through the pipe 56 from the oil product tank 23 of the lower tier 4 container to the centrifuge 21 of the upper tier container 3 .

The cell size of the filter cartridge 25, 26 is about 5 mm. The design of the filters is such that it is possible to replace and clean the filter element without stopping the process. Filter housings 25, 26 are equipped with pipelines for the removal of associated gases and the possibility of draining the accumulated sludge into the drainage line. The signal about the need to replace the filters comes from the difference in the readings of the pressure sensors installed at the inlet to the filters 25, 26 and at the outlet of them.

The oil phase through the mass flow meter 20, through the heat exchanger 22, is fed through a pipe 56 to the inlet of the centrifugal separator 21. Before that, in the heat exchanger 22 the oil phase is heated to the optimum separation temperature (usually up to 90 ... 95 ° C for heavy oil). It is possible to direct the flow of the oil phase without passing the heat exchanger 22, directly to the oil tank 11 through the pipeline 50, by switching the three-way valve 58. The finished oil stored in the tank 11 through the pipe 57 by the pump 12, located in the lower container 1, is poured into the stationary tank of the finished oil.

The stage of the final separation of water and solids from the oil in the separator 21 is as follows. The liquid oil phase, heated to 90-95 ° C, is fed under overpressure to the feed line of the centrifugal separator 21. Due to the high rotation speed of the drum (about 5900 rpm), a separation vector of liquids of different densities is created in the separation zone while mechanical particles in the sludge space at the periphery of the drum. Additionally, the oil phase purified from water, after centrifuge 21, is passed through pipeline 59 to the inlet of the oil tank 11. Mechanical impurities (solids) accumulated in the sludge space of the drum automatically at regular intervals by supplying operating water to the drum under pressure 0, 3 MPA, discharged into the tank sludge 13 through the pipeline 60. The tank sludge 13 is equipped with pressure and level control devices. Safety valves of the tank 13 ensures normal operation at elevated pressure, relieving excess gas pressure on the “candle”.

The heat exchanger 22, located in the upper layer container 3, is heated by an intermediate heat carrier through a steam plate heat exchanger 29, from which hot medium is sent through a pipe 61 to a heat exchanger 22, and a cooled medium from a heat exchanger 22 is pumped back through a pipe 30 to a heat exchanger 29 for heating, while water vapor with a temperature of about 170 ° C and a pressure of 0.8 MPa is used as a heat carrier.

The installation provides a loop for the return of the finished product to re-separation (not shown in Fig. 1-3). The circuit is also used during commissioning, during debugging, when the separated product does not meet the required quality group.

The lower level container 5 includes a nitrogen station 32, which supplies nitrogen through a pipe 64 to the decanter 18, and through a pipe 63 to a centrifuge 21 to expel the gas-explosive mixture formed during the cleaning of the oil product from them. The pressure created by the autonomous nitrogen gas production system of nitrogen station 32 is of the order of 60x10-4 MPA. When the pressure in the tank is exceeded, a relief valve is actuated directing the excess gas to the candle. Installed sensors warn of a decrease in pressure in each tank.

The output parameters of the oil (light phase) obtained at the installation - water cut to 1% and the content of mechanical particles is not more than 0.05 vol.%. The quality of cleaning the aqueous (heavy) phase at the outlet of the installation depends on many parameters, the main of which are the settings of the centrifuges, the effectiveness of the used demulsifiers and flocculants, the absence of persistent oil emulsions in the processed products. The design proposed for protection is used by LUKOIL-Perm LLC.

Claims (1)

A mobile unit for the preparation of intermediate layers of an oily liquid, including hydraulically interconnected averaging tank, a decanter, a centrifuge, an intermediate oil tank, a finished oil tank, a heavy water tank (aqueous phase of the oil product), a sludge tank, heat exchangers, a demulsifier dosing system, a dosing system flocculant, nitrogen station, pumps, filters, characterized in that the specified equipment is placed in two tiers in containers, while the output of the barn drive, h Through a plate heat exchanger located in one of the containers of the lower tier, it is hydraulically connected to the inlet of the averaging tank of one of the containers of the upper tier, the output of the tank-averaging is hydraulically connected to the inlet to the decanter located in one of the containers of the upper tier, with one of the exits the decanter is hydraulically connected to a centrifuge located in the same container as the decanter; the other output of the decanter is hydraulically connected to the capacity for collecting heavy water (the aqueous phase of the oil emulsion) located in one ohm from the containers of the lower tier, and the next exit from the decanter is connected by a pipeline to a sludge collection tank located in one of the containers of the lower tier, while one of the exits of the centrifuge placed in one of the containers of the upper tier is hydraulically connected to the inlet of the finished oil tank of one of containers of the lower tier, the other outlet of the centrifuge is hydraulically connected to the capacity for collecting heavy water (the aqueous phase of the oil emulsion) located in one of the containers of the lower tier, and the next outlet of the centrifuge is connected by piping ohm with a sludge collection tank located in one of the lower tier containers, the demulsifier dosing system and a flocculant dosing system located in one of the lower tier containers are hydraulically connected to the inlet of the averaging tank and to the pipeline for supplying the oil emulsion to the decanter located in one from containers of the upper tier, while the outlet of the nitrogen station located in one of the containers of the lower tier is hydraulically connected to the inlet of the decanter and the inlet of the centrifuge located in one of the circuits topers of tiers.

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