CN116617698B - Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation - Google Patents

Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation Download PDF

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Publication number
CN116617698B
CN116617698B CN202310921429.3A CN202310921429A CN116617698B CN 116617698 B CN116617698 B CN 116617698B CN 202310921429 A CN202310921429 A CN 202310921429A CN 116617698 B CN116617698 B CN 116617698B
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China
Prior art keywords
storage tank
oil
tank
pipe
steam
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CN202310921429.3A
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CN116617698A (en
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马树杰
李谊
张伟
李新刚
张新利
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Kelamayi Keli Energy Saving And Environmental Protection Technology Co ltd
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Kelamayi Keli Energy Saving And Environmental Protection Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B01D5/0036—Multiple-effect condensation; Fractional condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B01D5/0054—General arrangements, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/0072—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/30—Recovery of escaped vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B11/00—Controlling arrangements with features specially adapted for condensers

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a recovery device for escaping steam oil stains of an oil storage tank in thickened oil exploitation, wherein a fire-retarding breather valve is arranged on the tank top of the oil storage tank, an exhaust port arranged at the upper part of the fire-retarding breather valve is connected with an air inlet of a condensing tank of a cooling device through an air-entraining pipe, a material catching net is transversely arranged in a cavity of the fire-retarding breather valve, a granular foam outlet is arranged on a chamber wall below the material catching net, a lower opening of a recovery pipe connected with the granular foam outlet is led to the bottom of the oil storage tank, an air-cooling pipe type heat exchanger is arranged in the condensing tank, a steam-water separation chimney is arranged at the top of the condensing tank, a condensing return pipe arranged at the upper part of the condensing tank is connected with the condensing tank, a liquid storage tank is arranged below the condensing tank, and a liquid outlet pipe arranged in the liquid storage tank is connected with a return pipe through a circulating pump. The invention has reasonable structure, does not need the participation of chemical medium in oil-liquid separation, and depends on the density of light oil and water for self separation, thereby increasing the quality and the yield of oil quality and reducing the pollution to the environment and the waste of oil gas in the oil field.

Description

Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation
Technical Field
The invention relates to the technical field of thickened oil exploitation, belongs to an oil stain recovery device in thickened oil exploitation, and in particular relates to a recovery device for escaping steam oil stains from an oil storage tank in thickened oil exploitation.
Background
The oil field part oil extraction block belongs to heavy crude oil, and needs to be expelled through high-pressure high-dryness steam, and in the extraction process, the underground heavy thick oil is diluted by the steam, and enters into an oil storage tank of a metering station under the self pressure of the steam and the oil and the driving of an oil pumping unit. Because the oil stain just coming out of the well is mixed with the steam into a whole, a large amount of steam is sprayed out of the top of the oil storage tank along with the oil stain after entering the oil storage tank, so that the oil storage tank and the ground nearby are all black oil stains, and resources are wasted and the environment is damaged greatly. The steam pressure and flow rate of part of the steam entering the oil storage tank are high, and the oil storage tank cannot be cooled and recycled.
The original other devices are mainly characterized in that the oil is directly led to a built sealing station through a sealed gathering and conveying pipeline after being extracted by an oil pumping unit, oil and steam are separated through a separating tower after entering the sealing station, the separated steam is automatically pressed to large-scale air cooling for cooling and cooling, and finally the separated steam and oil are pumped to a joint station together through an oil transfer pump for mud removal and dehydration. The original other equipment functions are that the source is led to a closed system for concentrated cooling, and finally is collected and conveyed to a joint station, so that the cost is high, the investment is large, the equipment cannot be moved, and the oil concentration block is needed. The gas eliminating device installed by other factories can absorb part of gas to the small-gas-amount oil storage tank on site, but the equipment can not effectively operate for a long time and can not meet the working condition requirement. In the existing equipment, condensed water is generated by physical cooling and flows back into an oil storage tank, and most of the cooled gas cannot be directly discharged. The problem of oil storage tank loss steam is solved to former erection equipment, only can handle partial gas, and equipment is small to cause the throughput little, and the effect is unobvious, operating time is short, and recovered greasy dirt can't be measured, and added value is few, no load adjustment ability, can't grasp the detailed parameter of condensed liquid, can't calculate oil storage tank steam volume and recovered greasy dirt volume, water content, final treatment effect and exhaust temperature. Because the top space of the oil storage tank is limited and cannot bear excessive weight, and the problems of different oil and steam extraction and injection amounts of all stations, underground steam interaction and the like are solved, the cooling effect and the long-term running effect of the equipment are restricted, and the problem of pollution of a large amount of top steam to the ground is always solved.
Disclosure of Invention
The invention aims to provide a recovery device for escaping steam oil stains of an oil storage tank in thickened oil exploitation, which has reasonable structure, good separation and cooling effects of produced liquid, no participation of chemical media in oil-liquid separation, self-separation depending on the density of light oil and water, increase of quality and yield of oil quality and reduction of environmental pollution and oil gas waste of an oil field.
The purpose of the invention is realized in the following way: the utility model provides an oil storage tank loss steam greasy dirt recovery unit in viscous crude exploitation, including the oil storage tank, the upper portion at the oil storage tank wall is setting up the produced liquid import, the lower part at tank wall is setting up the produced liquid export, the tank top at the oil storage tank is setting up the fire-retardant breather valve, the gas vent that fire-retardant breather valve upper portion set up passes through the air inlet that the air-bleed pipe is connected the cooling device condensing tank, transversely set up the catch net in the cavity that is located the fire-retardant breather valve, be located the graininess foam export on the wall below the catch net, graininess foam export connected's recovery pipe lower extreme leads to the bottom of oil storage tank, set up the forced air cooling tubular heat exchanger in the condensing tank, be provided with the catch chimney at the top of condensing tank, the condensate return pipe that the catch chimney upper portion set up is being connected the condensing tank, the liquid reserve tank is being set up in the below of condensing tank, the drain pipe that the liquid reserve tank set up is being connected with the return pipe through the circulating pump, the export connection that the return pipe is located the upper portion of oil storage tank.
Aluminum fin heat transfer sheets are uniformly distributed on the heat exchange tubes of the air-cooled tube type heat exchanger.
A control cabinet is arranged on the condensing box.
An automatic liquid level meter is arranged on the liquid storage tank, and an automatic control flowmeter is arranged on a liquid outlet pipe of the liquid storage tank; the self-control liquid level meter, the self-control flowmeter and the circulating pump are respectively connected with the control cabinet through wires.
An air outlet of the fan is arranged on the condensing box and is connected with an air-cooled tubular heat exchanger.
A filter screen made of high-temperature resistant material is arranged on an air inlet of the condensing box.
The steam-water separation chimney is characterized in that an inlet connected with the bottom of the primary cooling box through the chimney is formed in the top of the condensing box, the primary cooling box is divided into an air inlet chamber and a filtered water exhaust chamber through a set isolation filter screen in the primary cooling box, the inlet of the primary cooling box is arranged at the bottom of the air inlet chamber, an exhaust port formed in the top surface of the filtered water exhaust chamber is connected with an inlet formed in the bottom of the secondary cooling box through the chimney, a diffusion pipe in a horn shape is connected to the inlet of the secondary cooling box, a cooling water blocking net is arranged on a horn mouth of the diffusion pipe, a secondary condensation return pipe arranged at the bottom of the secondary cooling box is connected with the air inlet chamber of the primary cooling box, and the primary condensation return pipe arranged at the bottom of the primary cooling box is connected with the condensing box.
The structure of the fire-retardant breather valve is that a frustum-shaped cylinder seat is connected to a pressure release outlet arranged on the tank top of an oil tank, a granular foam outlet is arranged on the upper portion of the frustum-shaped cylinder seat, the frustum-shaped cylinder seat is connected with a valve body inlet pipe through a flange, an exhaust port is arranged on the pipe wall of the valve body inlet pipe, a catch net is arranged in a valve body positioned on the upper portion of the exhaust port, a tubular valve seat is arranged above the catch net, a valve seat matching port with an inward concave conical surface is arranged at the upper end of the tubular valve seat, a one-way valve plate is matched and installed on the valve seat matching port, extension springs are uniformly distributed in the tubular valve seat along the pipe wall, the lower ends of the extension springs are respectively connected to a fixed ring table arranged on the inner wall of the tubular valve seat, the upper ends of the fixed ring table are respectively connected with a one-way valve plate, and an arch-shaped shield is arranged at the upper end of the valve body.
The object catching net is composed of uniformly distributed and laminated filter nets.
The invention is through installing the adjustable breathing apparatus recoverer device, bypass pipeline and cooling recovery device at the top of the oil storage tank. The steam and oil mixture enters the oil storage tank, floating particles are captured through the object capturing net through the tank top double-placed recoverer, the floating particles are deposited after accumulation, the floating particles automatically flow to the bottom of the oil storage tank through the installed pipeline, the captured residual non-particulate gas is automatically pressed to the cooling device through the pipeline, the cooled condensed water enters the bottom of the device after entering the device, and the gas temperature of the final discharging device is slightly higher than the local environment temperature. The condensed oil-water mixture is automatically discharged and automatically metered according to different densities after self precipitation and separation. The method has the advantages of greatly improving the environment of oil fields developed by owners, increasing the quality and yield of oil, and improving the investment recovery capability of suppliers on equipment.
The fire-retarding breather valve at the top of the oil storage tank has the main functions of capturing granular foam carried out by the gas extracted from the steam, and automatically overflowing the foam into the oil storage tank by gravity after capturing; the captured particle-free steam mixture is led to a condensing device through a steam leading pipeline in a self-pressing way, and a fan in the equipment blows a heat pipe to perform gas-liquid condensation and oil stain separation functions. Finally, a small part of gas is discharged from a gas-liquid separation chimney, the condensed oil-water mixture automatically flows to a liquid storage tank of a cooling device from an internal pipeline, the liquid storage tank is automatically measured through an oil-water chemical property automatic separation interface by automatic detection of a liquid level meter and a flowmeter, and the liquid storage tank reaches a designated liquid level gear pump to be started and is sent to an oil storage tank. All the above devices are automatically controlled and monitored by a remote mobile phone.
The invention processes undigested steam at the end, cools, and finally returns to the oil storage tank. The escape steam of the thick oil block flows into the atmosphere to pollute the environment and waste oil gas in the oil field, and other auxiliary facilities are not required to be additionally added, and the thick oil block only enters the equipment by means of the pressure of the steam. The single station has low cost, easy moving, simple structure and suitability for simple distribution stations and oil-free areas. Can realize, carry fluid and steam mixture to the oil storage tank together, only draw steam part and cool down, the oily liquid after the cooling is retrieved the oil storage tank again.
Fire-retardant breather valve:
the steam flow that escapes from the storage tank in summer and winter is very different, and thick oil block increases the steam filling volume in winter and satisfies the heat preservation demand, so the steam flow that escapes from the storage tank top is big, does not guarantee that the steam that escapes is balanced with the storage tank internal pressure behind the escape device, the storage tank does not hold back the pressure, the fire-stopping breather valve of installation forms the increase steam pressure velocity of flow through the frustum shape tube seat, and the steam passes through the filter equipment and screens out the particulate matter when frustum shape tube seat is inside, forms clean escape steam, and the particulate matter is stored more and is overflow tank body inside. The pressure of the vapor at the outlet of the storage tank is increased to the pressure of the dissipation device, and the fire-retardant breather valve can automatically lift and release pressure according to the pressure, so that the pressure balance of the system is ensured.
1. The method mainly comprises the steps that in the process that escaping steam passes through the top of a storage tank to an escaping steam condensing device, the pressure is larger than a set value of the pressure of a fire-retardant breather valve, and the escaping steam is filtered and condensed through a catch net. 2. The one-way valve plate is jacked, springs fixed through bolts are arranged around the one-way valve plate, and the dissipation steam pressure exceeds the tension of the springs, so that the springs are stretched, and the internal round steel plate is jacked for pressure relief. 3. The discharged gas is shielded from all around by the top arched shield, and when the gas pressure is lower than the spring pressure of the one-way valve plate. The original sealing function is restored by means of self-pulling force.
Steam-water separation chimney
After the dissipation steam increases in winter, partial underground steam is mutually leaped up, so that more steam enters the storage tank, rated heat exchange capacity of the dissipation device can be discharged from a chimney of the device after the dissipation device cannot digest and condense more steam, and condensate water freezing phenomenon is caused on the ground near equipment. Through the two condensation filtration of gas-liquid separation chimney, the gas of final exhaust does not have the comdenstion water, and the comdenstion water after collecting flows into equipment inside through self reservation pipeline, and the back-suction treatment is all done to the liquid return pipeline that gets into the storage tank inside simultaneously.
The main function is the escape steam condensing equipment, after unable absorption condensation great steam, the steam of partial escape overflows equipment, and the secondary is through top isolation filter screen absorption condensation after cooling down, the condensation of chimney, and the steam that pops out the chimney is the dry steam basically, and the condensate water after the absorption condensation flows to the equipment condensation tank by the wet return of bottom installation certainly, and the wet return bottom seals has one-way non return function, prevents that steam from fleing backward.
Advantageous effects
1. The oil-liquid separation does not need to participate in chemical medium, and the separation is carried out by self depending on the density of the light oil and the water.
2. The method is simple after oil-water separation, and the investment transfer of the manufacturer in the early stage is fast.
3. The heat transfer coefficient is high, the aluminum-coated finned tube is inserted into the condensing box to increase the heat transfer area by utilizing the difference that the temperature of the dissipated steam is far higher than the ambient temperature, and the condensing effect is achieved by large-flow air convection and rapid cooling.
4. And filtering the oil-contaminated steam entering the condensing box by using a temperature-resistant filtering material.
The invention has reasonable structure, good produced liquid separation and cooling effect, no participation of chemical medium in oil liquid separation, self separation depending on the density of light oil and water, increased quality and yield of oil quality, and reduced environmental pollution and oil gas waste in oil field.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a steam-water separation chimney.
Fig. 3 is a schematic structural view of a fire-retardant breather valve.
Detailed Description
The utility model provides a storage tank loss vapor greasy dirt recovery unit in viscous crude exploitation, as shown in fig. 1, fig. 2, fig. 3, including oil storage tank 1, be provided with the produced liquid import 2 in the upper portion of oil storage tank 1 tank wall, be provided with the produced liquid export 3 in the lower part of tank wall, be provided with fire-blocking breather valve 4 on the tank top of oil storage tank 1, the gas vent 25 that fire-blocking breather valve 4 upper portion set up is connected the air inlet of cooling device condensing tank 6 through induced air pipe 5, transversely set up catch net 26 in the cavity that is located fire-blocking breather valve 4, be provided with the granular foam export on the chamber wall that is located catch net 26 below, the recovery tube 7 lower extreme mouth of granular foam export connection is led to the bottom of oil storage tank 1, be provided with air-cooled tubular heat exchanger 8 in condensing tank 6, be provided with steam-water separation chimney 9 at the top of condensing tank 6, condensate return pipe 10 that steam-water separation chimney 9 upper portion set up is connected condensing tank 6, be provided with tank 11 below condensing tank 6, the drain pipe that tank 11 set up is connected with return pipe 13 through circulating liquid storage pump 12, the drain pipe that is located return pipe 13 is located the import of oil storage tank 1 upper portion. Aluminum fin heat transfer sheets are uniformly distributed on the heat exchange tubes of the air-cooled tube heat exchanger 8. A control cabinet 15 is provided on the condensation box 6. An automatic liquid level meter is arranged on the liquid storage tank 11, and an automatic control flowmeter is arranged on a liquid outlet pipe of the liquid storage tank 11; the self-control liquid level meter, the self-control flowmeter and the circulating pump 12 are respectively connected with a control cabinet 15 through wires. An air outlet of a fan 14 is arranged on the condensing box 6 and is connected with an air-cooled tubular heat exchanger 8. A filter screen made of a high-temperature resistant material is provided on the air inlet of the condensation tank 6. The steam-water separation chimney 9 is characterized in that an inlet connected with the bottom of a first-stage cooling box through a chimney is formed in the top of a condensing box 6, the first-stage cooling box is divided into an air inlet chamber 17 and a filtered water exhaust chamber 18 through a separation filter screen 16, the inlet of the first-stage cooling box is formed in the bottom of the air inlet chamber 17, an exhaust port 25 formed in the top surface of the filtered water exhaust chamber 18 is connected with the inlet positioned at the bottom of a second-stage cooling box 19 through the chimney, a horn-shaped diffusion pipe 20 is connected to the inlet in the second-stage cooling box 19, a cooling water blocking net 21 is arranged on the horn mouth of the diffusion pipe 20, a second-stage condensation return pipe 22 arranged at the bottom of the second-stage cooling box 19 is connected with the air inlet chamber 17 of the first-stage cooling box, and a first-stage condensation return pipe 23 arranged at the bottom of the first-stage cooling box is connected with the condensing box 6. The fire-retardant breather valve 4 is characterized in that a frustum-shaped cylinder seat is connected to a pressure relief outlet arranged on the tank top of an oil storage tank 1, a granular foam outlet is arranged on the upper portion of the frustum-shaped cylinder seat, the frustum-shaped cylinder seat is connected with a valve body inlet pipe 24 through a flange, an exhaust port 25 is arranged on the pipe wall of the valve body inlet pipe 24, a trap net 26 is arranged in a valve body positioned on the upper portion of the exhaust port 25, a tubular valve seat 27 is arranged above the trap net 26, a valve seat matching port with an inward concave conical surface is arranged at the upper end of the tubular valve seat 27, a one-way valve plate 29 is matched and installed on the valve seat matching port, tension springs 28 are uniformly distributed along the pipe wall in the tubular valve seat 27, the lower ends of the tension springs 28 are respectively connected to a fixed annular table arranged on the inner wall of the tubular valve seat 27, the upper ends of the fixed annular table are respectively connected with the one-way valve plate 29, and a shield 30 is arranged at the upper end of the valve body. The catch net 26 is composed of uniformly distributed and layered filter nets.

Claims (7)

1. The utility model provides a storage tank loss steam greasy dirt recovery unit in viscous crude exploitation, includes oil storage tank (1), is setting up in the upper portion of oil storage tank (1) tank wall and is producing liquid import (2), is setting up in the lower part of tank wall and is producing liquid export (3), characterized by: a fire-retarding breather valve (4) is arranged on the tank top of the oil storage tank (1), the fire-retarding breather valve (4) is structurally characterized in that a frustum-shaped cylinder seat is connected to a pressure relief outlet arranged on the tank top of the oil storage tank (1), a granular foam outlet is arranged at the upper part of the frustum-shaped cylinder seat, the frustum-shaped cylinder seat is connected with a valve body inlet pipe (24) through a flange, an exhaust port (25) is arranged on the pipe wall of the valve body inlet pipe (24), a catch net (26) is transversely arranged in a cavity positioned on the fire-retarding breather valve (4), a granular foam outlet is arranged on the chamber wall positioned below the catch net (26), the lower opening of a recovery pipe (7) connected with the granular foam outlet is led to the bottom of the oil storage tank (1), a tubular valve seat (27) is arranged above the catch net (26), a valve seat matching port with a concave conical surface is arranged at the upper end of the tubular valve seat (27), a one-way valve plate (29) is matched and is arranged on the valve seat matching port, a stretching spring (28) is uniformly distributed along the pipe wall in the pipe wall, the lower end of the stretching spring (28) is respectively connected with a fixed ring (30) on the inner wall of the tubular valve seat (27), and the fixed ring is respectively connected with the valve seat (30); an exhaust port (25) arranged at the upper part of the fire-retarding breather valve (4) is connected with an air inlet of a condensing box (6) of the cooling device through an air-guiding pipe (5), steam and oil mixture enters the inside of the oil storage tank, floating particles are caught through a catching net, and the rest non-particulate gas is caught and self-pressed to the cooling device through an air-guiding pipeline; an air-cooled tubular heat exchanger (8) is arranged in a condensing box (6), a steam-water separation chimney (9) is arranged at the top of the condensing box (6), the steam-water separation chimney (9) is structurally characterized in that an inlet connected with the bottom of a first-stage cooling box through the chimney is arranged at the top of the condensing box (6), the first-stage cooling box is divided into an air inlet chamber (17) and a filtered water exhaust chamber (18) through an isolation filter screen (16) arranged in the first-stage cooling box, the inlet of the first-stage cooling box is arranged at the bottom of the air inlet chamber (17), an air outlet (25) arranged on the top surface of the filtered water exhaust chamber (18) is connected with an inlet positioned at the bottom of a second-stage cooling box (19) through the chimney, a horn-shaped diffusion pipe (20) is connected with the inlet of the second-stage cooling box, a second-stage condensation return pipe (22) arranged at the bottom of the second-stage cooling box (19) is connected with the air inlet chamber (17) of the first-stage cooling box, and a first-stage condensation return pipe (23) arranged at the bottom of the first-stage cooling box is connected with the condensing box (6); a liquid storage tank (11) is arranged below the condensing tank (6), a liquid outlet pipe arranged on the liquid storage tank (11) is connected with a liquid return pipe (13) through a circulating pump (12), and an outlet of the liquid return pipe (13) is connected with an inlet arranged at the upper part of the oil storage tank (1).
2. The recovery device for the escape steam oil stain of the storage tank in the thick oil exploitation according to claim 1, which is characterized in that: aluminum fin heat transfer sheets are uniformly distributed on the heat exchange tubes of the air-cooled tube type heat exchanger (8).
3. The recovery device for the escape steam oil stain of the storage tank in the thick oil exploitation according to claim 1, which is characterized in that: a control cabinet (15) is arranged on the condensing box (6).
4. A recovery device for vapor oil escaping from a storage tank in heavy oil recovery according to claim 1 or 3, characterized in that: an automatic liquid level meter is arranged on the liquid storage tank (11), and an automatic control flowmeter is arranged on a liquid outlet pipe of the liquid storage tank (11); the self-control liquid level meter, the self-control flowmeter and the circulating pump (12) are respectively connected with the control cabinet (15) through wires.
5. The recovery device for the escape steam oil stain of the storage tank in the thick oil exploitation according to claim 1, which is characterized in that: an air outlet of a fan (14) is arranged on the condensing box (6) and is connected with an air-cooled tubular heat exchanger (8).
6. The recovery device for the escape steam oil stain of the storage tank in the thick oil exploitation according to claim 1, which is characterized in that: a filter screen made of high-temperature resistant material is arranged on an air inlet of the condensing box (6).
7. The recovery device for the escape steam oil stain of the storage tank in the thick oil exploitation according to claim 1, which is characterized in that: the object catching net (26) is composed of uniformly distributed and laminated filter nets.
CN202310921429.3A 2023-07-26 2023-07-26 Oil storage tank dissipation steam greasy dirt recovery unit in viscous crude exploitation Active CN116617698B (en)

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