CN212467608U - Purification unit in vehicle-mounted movable oilfield emptying gas recovery system - Google Patents
Purification unit in vehicle-mounted movable oilfield emptying gas recovery system Download PDFInfo
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- CN212467608U CN212467608U CN202021026736.3U CN202021026736U CN212467608U CN 212467608 U CN212467608 U CN 212467608U CN 202021026736 U CN202021026736 U CN 202021026736U CN 212467608 U CN212467608 U CN 212467608U
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Abstract
The utility model relates to a purification unit in a vehicle-mounted movable oilfield vent gas recovery system, which comprises a feed gas compressor, a first main compound tower, a second main compound tower, an auxiliary compound tower, a regenerated gas heater, a regenerated gas cooler, a regenerated gas condenser, a regenerated gas separator and a regenerated gas heat exchanger; the feed gas compressor is respectively communicated with the air inlets of the first main compound tower, the second main compound tower and the auxiliary compound tower, the auxiliary compound tower is communicated with the regenerated gas heater, the regenerated gas heater is respectively communicated with the first main compound tower and the second main compound tower, the air inlets of the first main compound tower and the second main compound tower are respectively provided with a regenerated gas discharge pipeline for discharging regenerated gas, and the two regenerated gas discharge pipelines are communicated with a regenerated gas cooler after the tail ends of the two regenerated gas discharge pipelines are converged.
Description
Technical Field
The utility model relates to a processing technology field of oil field atmospheric gas, specifically say, relate to a purification unit among on-vehicle portable oil field atmospheric gas recovery system.
Background
The oil field vent gas is vent gas which is rich in hydrocarbons such as methane, ethane, propane and the like and is generated in the oil extraction process, and is a recyclable resource. The oil field emptying gas is relatively dispersed, less in gas amount and unstable, conventional pipeline conveying is adopted, the investment cost is high, and the economical efficiency is poor, so that most of the oil field emptying gas is directly emptied and burnt, resources are wasted, the environment is polluted, and the requirements of national safety and environmental protection are not met.
At present, related recovery systems are designed at home and abroad to recycle the oil field vent gas, but the purification effect of the recovery systems on the oil field vent gas is poor, so that the quality of subsequent liquefied products is influenced, and therefore, a purification unit in a vehicle-mounted mobile oil field vent gas recovery system with a good purification effect is necessary to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a purification unit among the on-vehicle portable oil field unloading gas recovery system that the function is perfect, purifying effect is good to purification method has been given.
The utility model provides a technical scheme that above-mentioned problem adopted is: a purification unit in a vehicle-mounted movable oilfield vent gas recovery system comprises a purification unit and a liquefaction unit, wherein the purification unit provides purified oilfield vent gas for the liquefaction unit; the purification unit comprises a feed gas compressor, a first main composite tower, a second main composite tower, an auxiliary composite tower, a regenerated gas heater, a regenerated gas cooler, a regenerated gas condenser, a regenerated gas separator and a regenerated gas heat exchanger; a channel E1 and a channel E2 are arranged in the regeneration gas condenser; a channel D1 and a channel D2 are arranged in the regenerated gas heat exchanger; the regeneration gas separator is provided with a gas inlet, a top gas outlet and a bottom liquid outlet; the first main compound tower, the second main compound tower and the auxiliary compound tower are arranged side by side, an air inlet of the raw material gas compressor is communicated with an oil field emptying air source, an air outlet of the raw material gas compressor is respectively communicated with air inlets of the first main compound tower, the second main compound tower and the auxiliary compound tower through pipelines, and each pipeline is provided with a switch valve; the gas outlets of the first main combination tower and the second main combination tower are communicated with the liquefaction unit, the gas outlet of the auxiliary combination tower is communicated with the gas inlet of the regenerated gas heater, and the gas outlet of the regenerated gas heater is respectively communicated with the gas outlets of the first main combination tower and the second main combination tower and is used for introducing the heated regenerated gas into the first main combination tower and the second main combination tower; the air inlets of the first main compound tower and the second main compound tower are respectively provided with a regenerated gas discharge pipeline for discharging regenerated gas, the two regenerated gas discharge pipelines are respectively provided with a switch valve, the tail ends of the two regenerated gas discharge pipelines are converged and then communicated with the inlet end of a regenerated gas cooler, the outlet end of the regenerated gas cooler is communicated with the inlet end of a channel D2 of a regenerated gas heat exchanger, the outlet end of a channel D2 is communicated with the inlet end of a channel E1 of a regenerated gas condenser, the outlet end of the channel E1 is communicated with an air inlet of a regenerated gas separator, a top air outlet of the regenerated gas separator is communicated with the inlet end of a channel D1 of the regenerated gas heat exchanger, and the outlet end of the channel D1 is respectively connected with a pipeline which is connected with the air inlets of the first main compound tower and the second main compound tower and is used for communicating compressed oil field vent gas; and a liquid outlet at the bottom of the regeneration gas separator is connected with a free water output pipeline.
Preferably, the two regeneration gas discharge pipelines are also connected with a negative pressure desorption pipeline after the tail ends of the two regeneration gas discharge pipelines are converged, and a vacuum pump and a switch valve are installed on the negative pressure desorption pipeline; and a first regulating valve is arranged on a connecting pipeline between a liquid outlet at the bottom of the normal temperature separator and the hydrocarbon mixture separator.
Preferably, the passage E2 of the regeneration gas condenser is used for passing a refrigerant; and a second regulating valve is arranged on the free water output pipeline.
Preferably, the feed gas compressor is a reciprocating compressor.
Preferably, the cold energy of the regeneration gas condenser is provided by a second refrigerant compressor, the second refrigerant compressor belongs to a purification unit, the outlet end of the second refrigerant compressor is communicated with the inlet end of the channel E2, and the outlet end of the channel E2 is communicated with the inlet end of the second refrigerant compressor.
Preferably, the first main composite tower and the second main composite tower are internally filled with a modified 13X molecular sieve special for decarburization and a 4A molecular sieve special for dehydration in a layered manner, and the auxiliary composite tower is filled with a 3A molecular sieve for dehydration and drying; the regenerated gas condenser and the regenerated gas heat exchanger both adopt aluminum plate-fin heat exchangers.
The utility model also provides a purification method of purification unit, the step is as follows:
the first step is as follows: oil field vent gas in an oil field vent gas source firstly enters a raw material gas compressor for pressurization cooling, and the oil field vent gas after pressurization cooling enters a first main compound tower for purification treatment;
the second step is that: the first main compound tower and the second main compound tower are switched to work circularly in sequence;
when the first main compound tower is saturated with water and carbon dioxide, switching is performed, the oil field vent gas after pressurization and cooling in the first step enters a second main compound tower to be subjected to dehydration, decarburization and purification treatment, and the first main compound tower is sequentially subjected to three stages of vacuum desorption, heating desorption and cold blowing;
the vacuum desorption method comprises the following steps: the first main compound tower is not communicated with oil field vent gas, a regenerated gas discharge pipeline connected with a gas inlet of the first main compound tower is communicated with a negative pressure desorption pipeline, and then a vacuum pump is started to carry out negative pressure desorption on the first main compound tower to release a large amount of carbon dioxide and a small amount of water in the adsorbent; introducing high-temperature regeneration gas into the first main composite tower after vacuum desorption for heating and regeneration, desorbing the residual water and carbon dioxide, and realizing the regeneration of the composite adsorbent;
the heating desorption method comprises the following steps: a regenerated gas discharge pipeline connected with the air inlet of the first main compound tower is not communicated with a negative pressure desorption pipeline; part of compressed oil field vent gas is taken as regeneration gas to be adsorbed by an auxiliary compound tower for removing water, then the regeneration gas is heated into high-temperature gas to be taken as high-temperature regeneration gas of a compound adsorbent to enter a first main compound tower for heating and desorption, the regenerated gas generated after the first main compound tower is heated and desorbed passes through a regeneration gas discharge pipeline and then is cooled to normal temperature by a cooler to enter a regeneration gas heat exchanger, exchanging heat with low-temperature regeneration gas from a regeneration gas separator in a regeneration gas heat exchanger to be cooled, enabling the cooled regeneration gas to pass through a regeneration gas condenser and then enter the regeneration gas separator, separating free water and heavy hydrocarbon in the regeneration gas by the regeneration gas separator, mixing the separated regeneration gas with oil field vent gas in front of a second main compound tower after rewarming by the regeneration gas heat exchanger, then sending the mixture to the second main compound tower for dehydration and decarbonization, and then recovering mixed hydrocarbon and liquefied natural gas products;
when the second main compound tower is saturated with water and carbon dioxide, switching is performed, the oil field vent gas after pressurization and cooling in the first step enters the first main compound tower to be subjected to dehydration, decarburization and purification treatment, and the second main compound tower is sequentially subjected to three stages of vacuum desorption, heating desorption and cold blowing;
the vacuum desorption method comprises the following steps: the second main compound tower is not communicated with oil field vent gas, a regenerated gas discharge pipeline connected with the gas inlet of the second main compound tower is communicated with a negative pressure desorption pipeline, and then a vacuum pump is started to carry out negative pressure desorption on the second main compound tower so as to release a large amount of carbon dioxide and a small amount of water in the adsorbent; introducing high-temperature regeneration gas into the second main compound tower after vacuum desorption for heating and regeneration, desorbing the residual water and carbon dioxide, and realizing the regeneration of the compound adsorbent;
the heating desorption method comprises the following steps: a regenerated gas discharge pipeline connected with the air inlet of the second main compound tower is not communicated with a negative pressure desorption pipeline; part of the compressed oil field vent gas is taken as regeneration gas, water is removed through adsorption in an auxiliary composite tower, then the high-temperature gas is heated to be high-temperature regeneration gas which is taken as a composite adsorbent, the high-temperature regeneration gas enters a second main composite tower for heating desorption, the regenerated gas generated after the second main composite tower is heated and desorbed passes through a regeneration gas discharge pipeline, then the gas is cooled to normal temperature through a cooler and then enters a regeneration gas heat exchanger, the low-temperature regeneration gas from the regeneration gas separator exchanges heat in the regeneration gas heat exchanger and is cooled, the cooled regeneration gas enters the regeneration gas separator after passing through the regeneration gas condenser, the regeneration gas separator separates free water and heavy hydrocarbon in the regeneration gas, the separated regeneration gas is mixed with the oil field vent gas in front of the first main compound tower after being reheated by the regeneration gas heat exchanger, and then the mixture gas is sent to the first main compound tower for dehydration and decarbonization, and then mixed hydrocarbon and liquefied natural gas products are recovered.
Compared with the prior art, the utility model, have following advantage and effect:
1. the purification unit can be made into a vehicle-mounted movable type, is movable, flexible to move and convenient to assemble and disassemble;
2. the purification unit adopts a two-tower switching and one-tower auxiliary process, when the first main composite tower is in adsorption, the second main composite tower sequentially passes through three stages of vacuum desorption, heating desorption and cold blowing, and the auxiliary composite tower sequentially passes through regeneration gas cold blowing adsorption and heating regeneration. The two main composite towers are switched in a circulating mode to perform dehydration, decarburization and purification treatment on the oil field emptying gas, and the purification effect is good and the efficiency is high.
Drawings
In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the structure of a purification unit in the mobile oilfield blowdown gas recovery system on board a vehicle according to this embodiment.
Description of reference numerals:
the system comprises an oil field vent gas source 1, a purified gas 2, a raw gas compressor 50, a first main compound tower 51, a second main compound tower 52, an auxiliary compound tower 53, a regenerated gas heater 54, a regenerated gas cooler 55, a regenerated gas condenser 56, a regenerated gas separator 57, a regenerated gas heat exchanger 58, a switch valve 71, a switch valve 73, a switch valve 75, a switch valve 72, a switch valve 74, a switch valve 79, a switch valve 77, a switch valve 80, a switch valve 78, a switch valve 90, a free water output pipeline 23, a negative pressure desorption pipeline 45, a vacuum pump 49, a second regulating valve 83 and a second refrigerant compressor 81.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1, fig. 1 shows a purification unit in a mobile on-board oilfield blowdown recovery system. On-vehicle portable oil field unloading gas recovery system is used for retrieving hydrocarbon mixture and liquefied natural gas product, including two units: a purification unit and a liquefaction unit.
The purification unit of the embodiment comprises a raw material gas compressor 50, a first main compound tower 51, a second main compound tower 52, an auxiliary compound tower 53, a regenerated gas heater 54, a regenerated gas cooler 55, a regenerated gas condenser 56, a regenerated gas separator 57 and a regenerated gas heat exchanger 58. The regeneration gas condenser 56 is provided with passages E1 and E2. The regeneration gas heat exchanger 58 is provided with a passage D1 and a passage D2. The regeneration gas separator 57 has a gas inlet, a top gas outlet and a bottom liquid outlet.
In this embodiment, the raw material gas compressor 50 is a reciprocating compressor. An air inlet of a raw material gas compressor 50 is communicated with an oilfield emptying gas source 1, a first main compound tower 51, a second main compound tower 52 and an auxiliary compound tower 53 are arranged side by side, an air outlet of the raw material gas compressor 50 is respectively communicated with air inlets of the first main compound tower 51, the second main compound tower 52 and the auxiliary compound tower 53 through pipelines, and each pipeline is provided with a switch valve; specifically, a switch valve 71 is arranged at the air inlet of the first main combination tower 51, a switch valve 73 is arranged at the air inlet of the second main combination tower 52, a switch valve 75 is arranged at the air inlet of the auxiliary combination tower 53, and the switch valves 71, 73 and 75 are used for controlling whether to introduce the oil field air into the towers.
In this embodiment, the outlet air of the first main compound tower 51 and the second main compound tower 52 is purified qualified gas 2, so as to prevent the formation of low-temperature equipment and hydrates due to freezing of carbon dioxide and water in the low-temperature separation and liquefaction process, and the outlet air of the first main compound tower 51 and the outlet air of the second main compound tower 52 are both provided with a switch valve; a switch valve 72 is arranged at the air outlet of the first main compound tower 51, a switch valve 74 is arranged at the air outlet of the second main compound tower 52, and the switch valves 72 and 74 control the communication between the two main compound towers and the precooling heat exchanger 59.
In this embodiment, the gas outlet of the auxiliary combination tower 53 is communicated with the gas inlet of the regeneration gas heater 54, and the gas outlet of the regeneration gas heater 54 is respectively communicated with the gas outlets of the first main combination tower 51 and the second main combination tower 52, and is used for introducing the heated regeneration gas into the first main combination tower 51 and the second main combination tower 52; and a switching valve 79 is arranged on a connecting pipeline between the regeneration gas heater 54 and the first main combined tower 51, a switching valve 77 is arranged on a connecting pipeline between the regeneration gas heater 54 and the second main combined tower 52, and the switching valves 79 and 77 are used for controlling whether high-temperature regeneration gas is introduced into the towers or not.
In this embodiment, the air inlets of the first main compound tower 51 and the second main compound tower 52 are provided with a regeneration gas exhaust pipeline for exhausting regeneration gas, the two regeneration gas exhaust pipelines are provided with switch valves, the regeneration gas exhaust pipeline of the first main compound tower 51 is provided with a switch valve 80, and the regeneration gas exhaust pipeline of the second main compound tower 52 is provided with a switch valve 78.
In the embodiment, two regeneration gas discharge pipelines are communicated with the inlet end of the regeneration gas cooler 55 after the tail ends of the two regeneration gas discharge pipelines are converged, the outlet end of the regeneration gas cooler 55 is communicated with the inlet end of a channel D2 of a regeneration gas heat exchanger 58, the outlet end of a channel D2 is communicated with the inlet end of a channel E1 of a regeneration gas condenser 56, the outlet end of a channel E1 is communicated with the gas inlet of a regeneration gas separator 57, the top gas outlet of the regeneration gas separator 57 is communicated with the inlet end of a channel D1 of the regeneration gas heat exchanger 58, and the outlet ends of a channel D1 are respectively connected with pipelines which compressed oil field vent gas is communicated and which are connected with the gas inlets of a first main combination tower 51 and a second; a liquid outlet at the bottom of the regeneration gas separator 57 is connected with a free water output pipeline 23, and a second regulating valve 83 is installed on the free water output pipeline 23. Passage E2 of the regeneration gas condenser 56 is for the refrigerant. The two regeneration gas discharge pipelines are also connected with a negative pressure desorption pipeline 45 after the tail ends are converged, and a vacuum pump 49 and a switch valve 90 are installed on the negative pressure desorption pipeline 45.
In this embodiment, the regeneration gas condenser 56 is provided by a second refrigerant compressor 81, an outlet end of the second refrigerant compressor 81 is communicated with an inlet end of the passage E2, and an outlet end of the passage E2 is communicated with an inlet end of the second refrigerant compressor 81, so as to form closed cycle refrigeration.
In this embodiment, the first main combination tower 51 and the second main combination tower 52 are filled with the modified 13X molecular sieve dedicated for decarburization and the 4A molecular sieve dedicated for dehydration in a layered manner, and the auxiliary combination tower 53 is filled with the dehydrated and dried 3A molecular sieve, so as to reduce the adsorption of heavy hydrocarbon in the regeneration gas. The refrigerant compressor 67 is a screw compressor. The regenerated gas condenser 56 and the regenerated gas heat exchanger 58 both adopt aluminum plate-fin heat exchangers, so that the efficiency of the low-temperature heat exchanger is improved, the size of the equipment is reduced, and the module manufacturing and the vehicle-mounted movement of the equipment are facilitated.
In this embodiment, the purification method of the purification unit is as follows:
the first step is as follows: oil field vent gas in the oil field vent gas source 1 firstly enters a raw material gas compressor 50 for pressurization and cooling, and the oil field vent gas after pressurization and cooling enters a first main compound tower 51 for purification treatment;
the second step is that: the first main compound tower 51 and the second main compound tower 52 are switched to work circularly in sequence;
when the first main combination tower 51 is saturated with water and carbon dioxide, the switching is performed, the oil field vent gas after being pressurized and cooled in the first step enters the second main combination tower 52 for dehydration, decarburization and purification treatment, and the first main combination tower 51 sequentially performs three stages of vacuum desorption, heating desorption and cold blowing;
the vacuum desorption method comprises the following steps: the first main compound tower 51 does not discharge the air from the oil field, the switch valves 71 and 72 are closed, a regenerated gas discharge pipeline connected with the air inlet of the first main compound tower 51 is communicated with the negative pressure desorption pipeline 45, the switch valves 80 and 90 are opened, and then the vacuum pump 49 is started to carry out negative pressure desorption on the first main compound tower 51, so that a large amount of carbon dioxide and a small amount of water in the adsorbent are released; introducing high-temperature regeneration gas into the first main composite tower 51 after vacuum desorption for heating regeneration, desorbing the residual water and carbon dioxide, and realizing the regeneration of the composite adsorbent;
the heating desorption method comprises the following steps: a regenerated gas discharge pipeline connected with the air inlet of the first main compound tower 51 is not communicated with the negative pressure desorption pipeline 45, and the switch valve 90 is closed; part of the compressed oil field vent gas is used as regeneration gas to be adsorbed by an auxiliary compound tower 53 for removing water, then a switch valve 79 is opened, the high-temperature gas 46 which is heated into the high-temperature regeneration gas as a compound adsorbent enters a first main compound tower 51 for heating and desorption, the regenerated gas generated after the first main compound tower 51 is heated and desorbed passes through a regeneration gas discharge pipeline and is cooled to normal temperature by a cooler 55, the cooled regeneration gas enters a regeneration gas heat exchanger 58 and exchanges heat with the low-temperature regeneration gas from the regeneration gas separator 57 in the regeneration gas heat exchanger 58 to be cooled, the cooled regeneration gas enters the regeneration gas separator 57 after passing through a regeneration gas condenser 56, the regeneration gas separator 57 separates free water and heavy hydrocarbon in the regeneration gas, the separated regeneration gas is mixed with the oil field vent gas before a second main compound tower 52 after being reheated by the regeneration gas heat exchanger 58 for decarbonization, then recovering the mixed hydrocarbon and liquefied natural gas products;
when the second main combination tower 52 is saturated with water and carbon dioxide, the switching is performed, the oil field vent gas after being pressurized and cooled in the first step enters the first main combination tower 51 for dehydration, decarburization and purification treatment, and the second main combination tower 52 sequentially performs three stages of vacuum desorption, heating desorption and cold blowing;
the vacuum desorption method comprises the following steps: the second main compound tower 52 does not discharge the air from the oil field, the switch valves 73 and 74 are closed, a regenerated gas discharge pipeline connected with the air inlet of the second main compound tower 52 is communicated with the negative pressure desorption pipeline 45, the switch valves 78 and 90 are opened, and then the vacuum pump 49 is started to carry out negative pressure desorption on the second main compound tower 52, so that a large amount of carbon dioxide and a small amount of water in the adsorbent are released; introducing high-temperature regeneration gas into the second main compound tower 52 after vacuum desorption for heating and regeneration, desorbing the residual water and carbon dioxide, and realizing the regeneration of the compound adsorbent;
the heating desorption method comprises the following steps: a regenerated gas discharge pipeline connected with the air inlet of the second main compound tower 52 is not communicated with the negative pressure desorption pipeline 45; part of the oil field vent gas after compression is taken as regeneration gas to be adsorbed by an auxiliary compound tower 53 for removing water, then the high-temperature gas 46 heated as the high-temperature regeneration gas of the composite adsorbent enters the second main composite tower 52 for heating desorption, the regenerated gas generated after the second main composite tower 52 is heated desorption passes through the regeneration gas discharge pipeline and then is cooled to normal temperature by the cooler 55 and then enters the regeneration gas heat exchanger 58, the regenerated gas is cooled by exchanging heat with low-temperature regenerated gas from a regenerated gas separator 57 in a regenerated gas heat exchanger 58, the cooled regenerated gas enters the regenerated gas separator 57 after passing through a regenerated gas condenser 56, free water and heavy hydrocarbon in the regenerated gas are separated out by the regenerated gas separator 57, the separated regenerated gas is mixed with oil field vent gas in front of the first main combination tower 51 after being reheated by the regenerated gas heat exchanger 58, and then the mixture is sent to the first main combination tower 51 for dehydration and decarburization, and then mixed hydrocarbon and liquefied natural gas products are recovered.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (6)
1. A purification unit in a vehicle-mounted movable oilfield vent gas recovery system comprises a purification unit and a liquefaction unit, wherein the purification unit provides purified oilfield vent gas for the liquefaction unit; the method is characterized in that: the purification unit comprises a raw material gas compressor (50), a first main composite tower (51), a second main composite tower (52), an auxiliary composite tower (53), a regenerated gas heater (54), a regenerated gas cooler (55), a regenerated gas condenser (56), a regenerated gas separator (57) and a regenerated gas heat exchanger (58); a channel E1 and a channel E2 are arranged in the regeneration gas condenser (56); a channel D1 and a channel D2 are arranged in the regeneration gas heat exchanger (58); the regeneration gas separator (57) is provided with a gas inlet, a top gas outlet and a bottom liquid outlet; the first main compound tower (51), the second main compound tower (52) and the auxiliary compound tower (53) are arranged side by side, an air inlet of the raw material gas compressor (50) is communicated with an oil field emptying gas source (1), an air outlet of the raw material gas compressor (50) is communicated with air inlets of the first main compound tower (51), the second main compound tower (52) and the auxiliary compound tower (53) through pipelines respectively, and each pipeline is provided with a switch valve;
the air outlets of the first main compound tower (51) and the second main compound tower (52) are qualified purified air, so that carbon dioxide and water are prevented from blocking a low-temperature channel and forming hydrates in a liquefaction unit; the gas outlet of the auxiliary composite tower (53) is communicated with the gas inlet of a regenerated gas heater (54), and the gas outlet of the regenerated gas heater (54) is respectively communicated with the gas outlets of the first main composite tower (51) and the second main composite tower (52) and is used for introducing the heated regenerated gas into the first main composite tower (51) and the second main composite tower (52); the air inlets of the first main compound tower (51) and the second main compound tower (52) are respectively provided with a regenerated gas discharge pipeline, used for discharging the regenerated gas, the two regenerated gas discharge pipelines are respectively provided with a switch valve, the two regenerated gas discharge pipelines are communicated with the inlet end of a regenerated gas cooler (55) after the tail ends of the two regenerated gas discharge pipelines are converged, the outlet end of the regeneration gas cooler (55) is communicated with the inlet end of a channel D2 of the regeneration gas heat exchanger (58), the outlet end of a channel D2 is communicated with the inlet end of a channel E1 of the regeneration gas condenser (56), the outlet end of a channel E1 is communicated with the gas inlet of a regeneration gas separator (57), the top air outlet of the regenerated gas separator (57) is communicated with the inlet end of a channel D1 of the regenerated gas heat exchanger (58), and the outlet end of the channel D1 is respectively connected with a pipeline which is connected with the air inlets of the first main compound tower (51) and the second main compound tower (52) and is used for introducing compressed oil field blow-down gas; a liquid outlet at the bottom of the regeneration gas separator (57) is connected with a free water output pipeline (23).
2. The purification unit in the vehicle-mounted mobile oilfield blowdown gas recovery system of claim 1, wherein: the tail ends of the two regeneration gas discharge pipelines are converged and then are connected with a negative pressure desorption pipeline (45), and a vacuum pump (49) and a switch valve are installed on the negative pressure desorption pipeline (45).
3. The purification unit in the vehicle-mounted mobile oilfield blowdown gas recovery system of claim 1, wherein: a passage E2 of the regeneration gas condenser (56) is for passing a refrigerant; a second regulating valve (83) is arranged on the free water output pipeline (23).
4. The purification unit in the vehicle-mounted mobile oilfield blowdown gas recovery system of claim 1, wherein: the feed gas compressor (50) is a reciprocating compressor.
5. The purification unit in the vehicle-mounted mobile oilfield blowdown gas recovery system of claim 1, wherein: the cold energy of the regeneration gas condenser (56) is provided by a second refrigerant compressor (81), the second refrigerant compressor (81) belongs to a purification unit, the outlet end of the second refrigerant compressor (81) is communicated with the inlet end of a channel E2, and the outlet end of the channel E2 is communicated with the inlet end of the second refrigerant compressor (81).
6. The purification unit in the vehicle-mounted mobile oilfield blowdown gas recovery system of claim 1, wherein: the first main compound tower (51) and the second main compound tower (52) are internally filled with a special modified 13X molecular sieve for decarburization and a special 4A molecular sieve for dehydration in a layered manner, and the auxiliary compound tower (53) is filled with a dehydration and drying 3A molecular sieve; the regenerated gas condenser (56) and the regenerated gas heat exchanger (58) both adopt aluminum plate-fin heat exchangers.
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| CN202021026736.3U CN212467608U (en) | 2020-06-05 | 2020-06-05 | Purification unit in vehicle-mounted movable oilfield emptying gas recovery system |
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| CN202021026736.3U CN212467608U (en) | 2020-06-05 | 2020-06-05 | Purification unit in vehicle-mounted movable oilfield emptying gas recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589267A (en) * | 2020-06-05 | 2020-08-28 | 杭州弘泽新能源有限公司 | Purification unit in vehicle-mounted movable oilfield vent gas recovery system and purification method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111589267A (en) * | 2020-06-05 | 2020-08-28 | 杭州弘泽新能源有限公司 | Purification unit in vehicle-mounted movable oilfield vent gas recovery system and purification method thereof |
| CN111589267B (en) * | 2020-06-05 | 2024-05-07 | 无锡宏盛换热器制造股份有限公司 | Purifying unit in vehicle-mounted mobile oilfield vent gas recovery system and purifying method thereof |
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Inventor after: Zhou Shen Inventor after: Chen Zhiwei Inventor before: Zhou Shen Inventor before: Wang Tingning Inventor before: Wang Meng Inventor before: Chen Zhiwei |
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Effective date of registration: 20211220 Address after: 214092 No. 8, Liangkang Road, Mashan, Binhu District, Wuxi City, Jiangsu Province Patentee after: WUXI HONGSHENG HEAT EXCHANGER MANUFACTURING CO.,LTD. Address before: Room a-b102-1354, 198 Qidi Road, Xiaoshan Economic and Technological Development Zone, Hangzhou, Zhejiang 311200 Patentee before: Hangzhou Hongze new energy Co.,Ltd. |