179results about "Hydrocarbon distillation" patented technology

The invention relates to the technical field of fraction optimization, and discloses a catalytic isomerization-based fraction optimization regulation and control device and method.The catalytic isomerization-based fraction optimization regulation and control device comprises a rectifying tower, the outer wall of the rectifying tower is in through connection with an air inlet, the outer wall of the rectifying tower is in through connection with a liquid inlet, the outer wall of the rectifying tower is in through connection with a reflux inlet, and the top of the rectifying tower is in through connection with an air outlet; when a gas phase passes through the gas outlet, the gas phase jacks the floating valve shell to move upwards, makes contact with the inner wall of the top of the floating valve shell, is blocked by the limiting plate and flows out of the gas outlet groove, and a plurality of gas holes are formed in a catalyst, so that the contact time of the gas phase and the catalyst is prolonged; the problems that when a conventional float valve rectifying tower is used, the contact time of a gas phase in a catalyst layer is short, the deep isomerization reaction time of light naphtha is usually long, only low-carbon hydrocarbon isomerization or simple etherification reaction can be treated, and deeper catalytic isomerization cannot be carried out are effectively solved.

The invention relates to the field of comprehensive utilization of biomass energy, and particularly discloses a process for preparing biological coal based on atmospheric distillation of biochar and biological oil, which comprises the following steps: performing atmospheric distillation on unpickled biochar or pickled biochar and biological oil to finally obtain light fraction and biological coal; biochar which is not subjected to acid pickling or biochar subjected to acid pickling serves as an in-situ catalyst, rich pores and oxygen-containing functional groups of the biochar can synergistically catalyze bio-oil to be subjected to condensation polymerization such as esterification and etherification, and finally the prepared bio-coal is good in combustion performance and high in productivity; the process is simple and controllable, and large-scale industrial production is expected to be carried out.

The invention discloses a fluorine-containing aromatic polyamide film as well as a preparation method and application thereof, and belongs to the technical field of separation film materials. The invention aims to solve the problems of low flux and poor selectivity of the existing membrane material in non-polar solvent separation. The fluorine-containing aromatic polyamide film comprises a porous supporting layer and a fluorine-containing polyamide selection layer formed by interfacial polymerization, the invention discloses application of a fluorine-containing aromatic polyamide film in hydrocarbon separation. The membrane has excellent separation performance (toluene flux gt, 0.1 L.m <-2 >. H <-1 >. Bar <-1 > and TIPB rejection rate gt, 50%) on a toluene / TIPB binary system, can effectively separate complex multi-element organic compound mixtures, shows differential separation performance on different types of hydrocarbon compounds, realizes accurate screening based on molecular size and affinity, and can be used for separation of real crude oil. The method is simple in preparation process, mild in condition and easy for large-scale production.

The utility model relates to the technical field of petrochemical engineering, and particularly discloses a cracking tail oil heat recovery system of a slurry bed residual oil hydrogenation device, which comprises a fractionating tower, a fractionating tower bottom pump, an aviation kerosene tower bottom heat exchanger, a debutanizer bottom heat exchanger, an isopentane tower bottom heat exchanger and a tail oil cold feed preheater, the fractionating tower bottom pump, the aviation kerosene tower bottom heat exchanger, the debutanizer bottom heat exchanger, the isopentane tower bottom heat exchanger and the tail oil cold feed preheater are sequentially arranged on the fractionating tower, and a tail oil discharge pipeline is arranged on the tail oil cold feed preheater. The tail oil temperature of the cracking device is reasonably utilized, the heat exchange process is optimized, efficient recovery of tail oil heat is achieved, the potential safety hazard of leakage of a heat exchange system of the isopentane tower is eliminated, temporary shutdown overhaul of the device caused by leakage of a heat exchanger is avoided, meanwhile, effective and stable control over the tail oil temperature is achieved, and the service life of the device is prolonged. The operation cost of tail oil air cooling is saved, and safe and stable operation of a heat exchange system of the device is effectively guaranteed.

The present invention is directed to a method for removing elemental mercury from liquid natural gas comprising changing the stabilizer column operating conditions to beneficially transfer mercury from the stabilized condensate phase to the overhead gas phase, where it may be compressed and recycled with the gas going to the existing feed gas mercury removal units.

The present invention provides a method of preparing a pyrolysis oil from waste plastics, the method comprising the steps of: (S1) supplying a waste plastic raw material to a first reactor to perform primary pyrolysis, and upwardly discharging a gaseous stream generated by the pyrolysis; (S2) supplying the overhead gaseous stream of the first reactor to at least one distillation column and separating the overhead gaseous stream by boiling point to obtain a stream containing a C5-12 light oil (LO), a stream containing a C13-22 middle oil (MO), and a stream containing a C23 or higher heavy oil (HO); and (S3) supplying a portion of the middle oil (MO)-containing stream separated in the distillation column to a second reactor to perform secondary pyrolysis, and supplying a gaseous stream generated by the secondary pyrolysis to the distillation column, wherein the primary pyrolysis and the secondary pyrolysis are each performed under high pressure conditions of 2-40 bar.

The application discloses a hydroprocessing method and a hydroprocessing system. The hydroprocessing method comprises a first-stage hydroprocessing step, a middle-stage separation step and a second-stage hydroprocessing step under the condition of 4-15 MPa. The middle-stage separation step separates the effluent obtained in the first-stage hydroprocessing step into heavy components and light components. The second-stage hydroprocessing step processes the heavy components. The reaction raw material of the hydroprocessing method of the application comprises any one, two, three or four of crude benzene full fraction, heavy benzene, coal-based light hydrocarbon and coal tar. The hydroprocessing system is used for implementing the hydroprocessing method of the application. The application realizes two-stage hydroprocessing through the middle-stage separation processing, and effectively separates the heavy components and the light components, so that each reaction stage processes the corresponding best adaptation effect according to the different properties of the raw materials, and the best selection of each component in the raw material into the target product is ensured.

A process for treating a crude oil feedstock includes: introducing a crude oil stream into a reactive distillation unit to remove Conrason carbon residues and metals from the crude oil stream and produce a distillate stream having an average boiling point distribution that is less than the average boiling point distribution of the crude oil stream; and feeding the distillate stream in gaseous form, in a continuous manner and without further treatment, to a catalytic cracking reactor operating at a temperature of 300 DEG C to 800 DEG C, the catalytic cracking reactor having a cracking catalyst arranged therein, the cracking catalyst cracking the distillate stream, to form a petrochemical product stream comprising light olefins and BTX.

The application discloses a solvent separation and recovery process of a vinyl lubricating oil base oil, and comprises the following steps: step S1, obtaining organic solvent vapor and crude oil by removing the reaction liquid from a dissolving unit; step S2, obtaining refined solvent by refining the organic solvent vapor in a solvent rectification unit; step S3, obtaining tail gas condensate and tail gas non-condensable gas by condensing tail gas containing solvent vapor in a tail gas condensation recovery unit; and step S4, passing the tail gas non-condensable gas through a tail gas adsorption unit. The application mainly solves the problems of poor separation effect of reaction products, low product quality and inability to reach an industrial scale in the prior art.

The utility model relates to methanol removal equipment for industrial mixed oil production, which comprises a fixed frame, an inlet and outlet pipe, a servo motor and an outlet pipe, the fixed frame is annular, the upper surface and the lower surface of the fixed frame are both provided with limiting grooves, a material box is arranged in the fixed frame, the material box is obliquely arranged, and the outlet pipe is arranged in the material box. The inlet and outlet pipe is arranged at the bottom of the material box, and the outlet pipe is arranged at the top of the material box. According to the device disclosed by the utility model, the methanol component in the industrial mixed oil is efficiently removed by combining an innovative swing stirring mechanism with a direct heating technology. Compared with a traditional method, the method has the advantages that the raw materials can be more sufficiently mixed, the uniformity and the speed of methanol evaporation are improved, and the methanol removal efficiency is remarkably improved. Meanwhile, the heating module embedded in the stirring blade can directly heat the raw materials, the evaporation process of the methanol is accelerated, complete removal of the methanol is further ensured, and the quality of the industrial mixed oil is improved.

A method of producing useful fuel fluids from solid plastic waste, including loading solid plastic waste matter into a reaction chamber to define a load, subjecting the load to HTP to extract hydrocarbon mixtures, filtering the hydrocarbon mixtures to extract solid matter, and separating the hydrocarbon mixtures into a light fraction (C1 to C25) and a heavy fraction (C26 to C31). The heavy fraction is directed to a first container and the light fraction is directed to a second container. The light fraction is separated into diesel (C8-C25), gasoline (C4-C12), and vapor (C1-C5), and the diesel is directed to a third container, the gasoline is directed to a fourth container, and the vapor is directed to a fifth container. The hydrocarbon mixtures have a carbon number distribution between C1 and C31. The pressure in the reaction chamber is typically between 0.1 and 10 MPa and the temperature in the reaction chamber is between 350 and 500 degrees Celsius. The plastic waste is selected from the group consisting of PS, PE, PP, and mixtures thereof.

A method of processing a hydrocarbon feed may comprise fractionating the hydrocarbon feed into a light stream and a heavy stream, where the light stream includes hydrocarbons boiling at less than 370 ⁰C, and the heavy stream includes hydrocarbons boiling at greater than greater than 370 ⁰C, hydrotreating the heavy stream to form a hydrotreated heavy stream, feeding the light stream to a first Fluid Catalytic Cracking (FCC) reaction zone, thereby producing a light product stream which includes light olefins, and feeding the hydrotreated heavy stream to a second Fluid Catalytic Cracking (FCC) reaction zone, thereby producing a heavy product stream which includes light olefins, where the first FCC reaction zone operates under more severe operating conditions than the second FCC reaction zone.

A method for processing a hydrocarbon-containing mixture includes the steps of: I) separating the hydrocarbon-containing mixture into a light fraction and a heavy fraction; II) reacting the light fraction from step I) in an aromatization unit and separating the resulting reaction product into a C5− component and a C6+ component; III) reacting the heavy fraction from step I) and optionally the C6+ component from step II) in an aromatics conversion unit and separating the resulting reaction product into a C5− component, a C6-C7 component, a C8 component, and a C9+ component; and IV) optionally, steam cracking or catalytic cracking one or both of the C5− component from step II) and the C5− component from step III). The method can convert low-value hydrocarbon mixtures into C8 aromatic hydrocarbons and cracking raw materials, and improve the product value. A system for practicing this method is also provided.

The invention relates to the technical field of chemical energy conservation, in particular to an alkylate rectification system and method.The system comprises a deisobutanizer and an n-butanizer, a tower top outlet of the deisobutanizer is connected with an isobutane extraction pipeline, a tower bottom outlet of the deisobutanizer is connected with the upper middle section of the n-butanizer, and a tower bottom outlet of the n-butanizer is connected with the lower middle section of the n-butanizer. A tower bottom outlet of the n-butane removal tower is connected with an alkylate oil extraction pipeline; a tower top outlet of the n-butane removal tower is connected with an inlet of the compressor, a heat source inlet of the first multi-stage heat supplier at the middle and lower sections of the isobutane removal tower is connected with an outlet of the compressor, a heat source outlet of the first multi-stage heat supplier is connected with an inlet of the pressure release valve, and an outlet of the pressure release valve is respectively connected with a tower top inlet of the n-butane removal tower and an n-butane extraction pipeline. The steam at the top of the n-butane removal tower is recompressed to be used for heat supply of the isobutane removal tower, low-grade energy can be converted into high-grade energy, heat distribution in the isobutane removal tower is optimized, consumption of the high-grade energy is reduced, and energy saving is achieved.

The utility model relates to the technical field of waste mineral oil treatment equipment, and discloses waste mineral oil distillation pretreatment impurity removal equipment which comprises a filtering bin, a supporting frame is fixed in the filtering bin, and a filtering assembly used for removing impurities in waste mineral oil is arranged in the supporting frame. The filter assembly comprises a plurality of filter cartridges arranged in the supporting frame in a surrounding mode, a main pipe is fixed to the middle of the supporting frame, a flow dividing pipe is connected between the main pipe and the filter cartridges, a flow dividing pipe is connected between every two adjacent filter cartridges, and a fixing frame is fixed to the position, below the supporting frame, in the filter bin. According to the waste mineral oil filter disclosed by the utility model, the main pipe is connected with the filter cartridges and the two adjacent filter cartridges are connected through the shunt pipes, so that the plurality of filter cartridges form a communicating vessel, waste mineral oil uniformly flows into the plurality of filter cartridges, and the plurality of filter cartridges can filter the waste mineral oil at the same time; the filtering area of the waste mineral oil is increased, so that the filtering speed is increased.

The application provides an impregnant pitch and a method for producing the impregnant pitch by using ethylene tar, and the method is as follows: 1. The ethylene tar is subjected to rectification, light components B1 with a distillation range of less than 180-210 DEG C are separated out, and heavy components A1 of the tar are collected; 2. The heavy components A1 of the tar obtained in step 1 are subjected to rectification again, light components B2 with a distillation range of 210-360 DEG C and heavy components A2 are separated out; 3. The light components B2 obtained in step 2 are subjected to catalytic polymerization and then subjected to negative pressure separation, the light components B3 obtained by the negative pressure separation are extracted, and heavy components A3 are collected; 4. The heavy components A3 obtained in step 3 are subjected to centrifugation, and the upper components C in the first 50% are collected according to the mass fraction; and 5. The upper components C obtained in step 4 and the heavy components A2 are subjected to condensation reaction to obtain the impregnant pitch. The impregnant pitch provided by the application simultaneously satisfies quinoline insoluble QI < 0.3%, and beta resin > 15%.

Provided is a method for refining a pyrolysis oil including: supplying a waste plastic raw material to a pyrolysis reactor to perform pyrolysis, and discharging a gaseous stream produced by the pyrolysis upwards; supplying an upper discharge stream from the pyrolysis reactor to a distillation column, and discharging a pyrolysis oil stream having a decreased content of a heavy oil fraction from the distillation column; and supplying the pyrolysis oil stream to an anion exchange resin column to bring the stream into contact with the anion exchange resin and remove impurities included in the pyrolysis oil stream.

The invention relates to a method for producing gasoline by ethylene oligomerization, which comprises the following steps: contacting an ethylene-containing raw material with an oligomerization catalyst to carry out oligomerization reaction to obtain an oligomerization reaction material; wherein the oligomerization catalyst comprises an FER structure molecular sieve; carrying out gas-liquid separation on the oligomerization reaction material to obtain a gas product and a liquid product; and separating the liquid product to obtain gasoline. According to the method, the oligomerization catalyst containing the FER structure molecular sieve is used for catalyzing ethylene oligomerization, the yield of gasoline in the obtained oligomerization product is high, the content of olefin in gasoline can be obviously increased, and the content of aromatic hydrocarbon can be reduced; the light gasoline obtained by separating the obtained gasoline product mainly comprises C5-C6 components, the total content of olefin and isoparaffin in the C5-C6 components is more than 90 wt%, and the light gasoline is suitable for being used as a blending component of high-octane gasoline.

The utility model discloses a heating instrument for a petroleum distillation experiment, and relates to the technical field of petrochemical engineering experiment equipment. The heating rings are embedded and fixed on the inner ring wall of the heating box at equal intervals; the heating pipes are arranged in the heating box, the heating pipes are arranged in an end-to-end S shape, and straight pipes at the upper end and the lower end of each heating pipe penetrate through and are inserted into the upper side wall and the lower side wall of the heating box through sealing bearings in a screwed mode; the water storage tank is arranged on one side below the heating tank, a heater is arranged in the water storage tank, and the lower end of the heating pipe is communicated with the water storage tank; the inlet end of the pumping pump is connected with the water storage tank through a pipeline, and the outlet end of the pumping pump is connected with the straight pipe at the upper end of the heating pipe through a pipeline; a stirring motor is fixed on one side of the outer top wall of the heating box; an output shaft of the stirring motor is connected with one end, positioned in the top wall of the heating box, of a straight pipe at the upper end of the heating pipe through a gear pair; under the synergistic effect of the rotary S-shaped heating pipe and the heating ring, the petroleum heating uniformity and the heat exchange efficiency are improved, and the energy consumption is reduced.

The application relates to a thickened oil thermal recovery external exhaust steam prying and installing treatment device, which comprises a base, a detachable flash tank arranged on one side of the base, a first platform and a second platform arranged on the other side of the base and protruding from the base, and a detachable air cooler arranged on the second platform, a liquid inlet end of the flash tank is communicated with a liquid conveying pipe, an air guide pipe communicated with the inside of the flash tank is arranged on the upper surface of the flash tank, a condensing part with a cavity is arranged on the air guide pipe, a spraying pipe is arranged on the upper side in the condensing part, the spraying pipe is communicated with a water outlet end of the air cooler, the condensing part above the spraying pipe is communicated with a non-condensed gas guide pipe, a cofferdam is formed between the air guide pipe and the lower part of the condensing part, the bottom of the cofferdam is communicated with a water inlet end of the air cooler. The produced liquid flash cooler, the air cooler and the circulating pump are integrated in a standard prying block, the inefficiency of the scattered deployment is solved, a prying and installing treatment system shared by multiple stations is designed, and the exhaust steam treatment of multiple or single transfer stations is realized.

The invention relates to a method for preparing an aviation kerosene component through ethylene oligomerization, which comprises the following steps of: contacting an ethylene-containing raw material with an oligomerization catalyst to carry out oligomerization reaction to obtain an oligomerization product; separating the oligomerization product to obtain a gas product and a liquid product, and carrying out distillation separation on the liquid product to obtain a C5-C9 fraction and a C9 + fraction; wherein the molecular sieve in the oligomerization catalyst comprises an FER structure molecular sieve and at least one molecular sieve with a skeleton structure selected from MFI, MEL, FAU, BEA, MTT, MTW, MWW, MOR, TON and AEL. The oligomerization product obtained by the invention mainly comprises C5 + mixed hydrocarbon, and the conversion rate of ethylene and the yield of C9 + component in the product are obviously improved.

A hydrocarbon separation system comprising a dividing wall column is disclosed. The dividing wall column having feed section, top section, bottom section, and side draw section. The top section may be configured to fractionate top product components to produce the first hydrocarbon fraction process stream containing C3 hydrocarbons. The side draw section may be configured to fractionate the second hydrocarbon fraction process stream containing C4 hydrocarbons and the bottom section may be configured to fractionate bottom product consisting of C5+ components to produce natural gasoline (NG) product stream. Corresponding process and apparatus for separation of hydrocarbon feed are disclosed.

The present application belongs to the technical field of chemical petroleum fractionation, and particularly relates to a gas-liquid separation equipment for chemical petroleum refining, which comprises a shell, a support, a fractionation mechanism and a controller. The shell is designed in a cylindrical shape in the middle part and in a semicircular shape at both ends. The shell is hollow. The support is located close to the bottom of the shell and is fixed to the shell. The fractionation mechanism is installed in the shell. In the present application, a small amount of petroleum vapor continues to rise in the fractionation tower due to insufficient condensation during the rising process of the vapor, so that the condensed petroleum vapor at another height is obtained, thereby effectively improving the production rate of the oil product.

The utility model discloses a fractionating tower for petroleum refining, which belongs to the technical field of petroleum processing equipment and comprises a fractionating tower body for petroleum refining and processing and a circular fixing seat for fixing, the bottom of the fractionating tower body is connected with the top of the fixing seat, and a square plate and a long plate are symmetrically arranged on two sides of the fixing seat respectively; a water tank is fixed to the top of the square plate and communicated with the condensation column through a connected water pipe, the top of the long plate is connected with a heating box used for preheating crude oil, and the heating box is located below the condensation column. A condensing pipe for circulating condensed liquid is arranged in the condensing column in a penetrating manner, one end of the condensing pipe is connected with the side wall of the fractionating tower body, and a movably connected cover plate is arranged at the top of the fractionating tower body. According to the petroleum refining device, petroleum refining processing can be accelerated through the arranged condensate water, a petroleum stock solution can be preheated through the temperature carried by the condensate water, energy loss is reduced, and the practicability of the device is improved.

A pyrolysis method and system are provided that may utilize a recycled plastic feedstock that comprises various types of waste plastics or a feedstock that comprises various types of waste plastics and at least one crude post-industrial liquid waste. The disclosed pyrolysis method and system may be configured to convert various types of waste plastics, including post-customer and post-industrial wastes, and / or crude post-industrial liquid wastes into useful pyrolysis oils.

A stabilizing tower of a coal tar hydrogenation fractionation system relates to the technical field of coal tar separation, and is characterized in that a connecting frame is respectively and fixedly arranged on one side wall of a plurality of baffles, a high-pressure spray pipe is rotatably connected in the connecting frame, a liquid supply pipe is fixedly arranged on the rear side of a tower body, one end of the liquid supply pipe is connected with an external water pump, and a plurality of shunt pipes are arranged on the liquid supply pipe; the fixed shell is fixedly arranged on the front side of the tower body, a rotating rod is fixedly arranged at the front end of the high-pressure spraying pipe, the front end of the rotating rod rotationally penetrates through the side wall of the tower body and then is rotationally connected with the inner wall of the fixed shell through a bearing, the rotating rod is fixedly sleeved with gears, the gears are located in the fixed shell, and a synchronous reciprocating driving mechanism matched with the gears is arranged in the fixed shell. According to the tower plate cleaning device, the tower plates in the tower plate cleaning device can be flushed, blockages can be cleaned, the separation efficiency and the product quality are prevented from being affected by a large number of blockages, the multiple tower plates can be synchronously flushed, and the cleaning efficiency of the tower plates is fully improved.

A waste heat recovery device for raw coke oven gas downstream of a riser tube (1), and a waste heat recovery method therefor. The waste heat recovery device comprises a bridge pipe (17) used for connection to the riser tube (1), a first coal tar spray head (4) arranged in the bridge pipe (17) for coal tar spraying, and a high-temperature gas collecting pipe (7) connected to an outlet end of the bridge pipe (17), a heavy oil tank (8), a high-temperature oil pump (9), and a heat exchange device, which are arranged in order. The high-temperature gas collecting pipe (7) is arranged below the bridge pipe (17) such that coal tar sprayed from the first coal tar spray head (4) can go downward and enter the high-temperature gas collecting pipe (7), and the heavy oil tank (8) is connected to an oil outlet of the high-temperature gas collecting pipe (7). Thus, the coal tar is sprayed into the bridge pipe (17) by means of the first coal tar spray head (4), so that after heat exchange with the raw coke oven gas, the sprayed coal tar passes through the high-temperature gas collecting pipe (7), the heavy oil tank (8), and the high-temperature oil pump (9) and then enters the heat exchange device for heat recovery.

The utility model relates to the technical field of petroleum chemical industry especially, relate to a kind of preflash heating's split quality feed device, the preflash heating's split quality feed device, including, storage tank, the storage tank outside is provided with shunt tank, the storage tank bottom is fixedly connected with support plate symmetrically, the support plate bottom is fixedly connected with bottom plate, feed mechanism, the storage tank bottom is installed with feed mechanism, feed mechanism can add material equally, the accurate equal addition of material is realized, effectively avoids the production fluctuation, quality defect or raw material waste caused by uneven feeding, for stable process flow, improve product consistency and optimize resource utilization rate provide reliable guarantee, separation mechanism, the shunt tank inside is installed with separation mechanism, separation mechanism can gas-liquid separation avoid the gas-liquid two item flow deflection, in heating furnace internal heating uneven and produce local hot spot coking;The utility model improves the use efficiency of device by the cooperation of feed mechanism and separation mechanism.

The utility model relates to the technical field of mineral oil processing, and provides a device for precisely fractionating waste mineral oil, which comprises a fractionating tower and a position blocking plate, a plurality of output pipes which are uniformly distributed are arranged on the fractionating tower, a plurality of mark inserting grooves matched with the output pipes are fixedly connected to the outer wall of the fractionating tower, and mark plates are inserted into the mark inserting grooves. The blocking plate is rotationally connected to the top end of the label inserting groove, a positioning groove is formed in the top end of the label inserting groove, a first magnetic attraction piece is arranged on the inner lower side wall of the positioning groove, a containing groove matched with the positioning groove is formed in the bottom end of the blocking plate, a through hole is formed in the inner upper side wall of the containing groove, and a control rod is slidably connected into the through hole. And the bottom end of the control rod is fixedly connected with a positioning rod slidably connected with the containing groove, the bottom end of the positioning rod is provided with a second magnetic attraction piece matched with the first magnetic attraction piece, and the top end of the control rod is provided with a stop block, so that the purposes of conveniently replacing the marking plate and improving the working efficiency are achieved.

The invention belongs to the technical field of oil and gas development vent gas recovery, and discloses an oil and gas development vent gas recovery system, device and method, the system comprises a production separator, a low-pressure flash evaporation unit, a liquid phase storage unit and a flash steam buffer unit; the production separator comprises a liquid phase outlet and a gas phase outlet, the liquid phase outlet of the production separator is connected with the low-pressure flash evaporation unit, and the gas phase outlet is connected with the pipeline; and the low-pressure flash evaporation unit is connected with the liquid phase storage unit and the flash evaporation gas buffer unit. According to the process device provided by the invention, flash evaporation and volatilization processes of pressurized oil-phase product gas generated by the three-phase separation unit can be controlled to be carried out in the low-pressure flash evaporation unit, and resource recovery is realized by carrying out centralized recovery treatment on gas-phase products of the low-pressure flash evaporation unit.