CN221085163U - Skid-mounted tail gas recovery equipment - Google Patents
Skid-mounted tail gas recovery equipment Download PDFInfo
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- CN221085163U CN221085163U CN202322869457.3U CN202322869457U CN221085163U CN 221085163 U CN221085163 U CN 221085163U CN 202322869457 U CN202322869457 U CN 202322869457U CN 221085163 U CN221085163 U CN 221085163U
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- tail gas
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- 238000011084 recovery Methods 0.000 title claims abstract description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 208
- 239000007789 gas Substances 0.000 claims abstract description 119
- 239000003345 natural gas Substances 0.000 claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 102
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 70
- 230000001502 supplementing effect Effects 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 6
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 23
- 230000000694 effects Effects 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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Abstract
The utility model discloses skid-mounted tail gas recovery equipment, and relates to the technical field of natural gas. The device comprises a base, a gas-liquid separator, an ejector, a tail gas inlet interface, a natural gas inlet interface, a waste water discharge interface and a natural gas discharge interface, wherein the gas-liquid separator and the ejector are arranged on the base, the tail gas inlet interface is connected with the gas-liquid separator, the natural gas inlet interface is connected with the ejector, the gas-liquid separator is connected with a shrinkage tube of the ejector, a liquid outlet of the gas-liquid separator is connected with the waste water discharge interface, and the ejector is connected with the natural gas discharge interface. According to the utility model, the gas-liquid separator and the ejector are respectively arranged on the base to form the skid-mounted recovery system, so that the assembly can be completed in a factory, the cost is reduced compared with the assembly in a mining site, and the construction efficiency of the mining site is improved.
Description
Technical Field
The utility model belongs to the technical field of natural gas, and particularly relates to skid-mounted tail gas recovery equipment.
Background
When natural gas is extracted from stratum, water vapor is mixed in natural gas, if the water vapor in the natural gas is not treated, a great amount of water vapor can easily form accumulated water in a natural gas conveying pipeline, and after the accumulated water is mixed with the mixed gas such as hydrogen sulfide in the natural gas, the corrosion of the natural gas pipeline can be easily caused. Thus, natural gas requires removal of water vapor after production from the formation. The removal of water vapor in natural gas by triethylene glycol is a means in the prior art, the triethylene glycol is also abbreviated as TEG, and the removal of water vapor is also performed in a TEG rectifying tower. The water vapor removed in the TEG rectifying tower is discharged from the tail gas discharge port, and part of natural gas is mixed in the removed water vapor, so that the tail gas of the TEG rectifying tower also needs a plurality of devices for treatment.
The natural gas production area is usually located in a remote area, and when equipment is installed in a production site, the equipment is usually transported to the site separately, then the equipment is connected through pipelines, and components such as valves are arranged on the pipelines. Several devices for treating TEG rectification column tail gas also require on-site assembly connections. However, the equipment is assembled and connected on the site, firstly, a lifting device is assembled on the mining site, the lifting device needs to be arranged at high cost every day, and when the lifting device is used for other equipment, the equipment for treating the tail gas of the TEG rectifying tower cannot be installed in a movable way; secondly, the open stope is uneven, and the relative position needs to be continuously adjusted when each equipment is installed during assembly, so that the construction efficiency of the stope is low. Therefore, each treatment device of the TEG rectifying tower tail gas is assembled on site, and the problems of high cost and low site construction efficiency are caused.
Disclosure of utility model
The utility model aims to provide skid-mounted tail gas recovery equipment, which is used for solving the problems that the tail gas treatment equipment of a TEG rectifying tower needs to be assembled on site, the assembly cost is high and the assembly efficiency is low.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
The utility model provides a sled dress tail gas recovery plant, includes base, gas-liquid separator and ejector, be provided with tail gas inlet connection, natural gas inlet connection, waste water discharge connection and natural gas discharge connection on the base, gas-liquid separator and ejector are installed in the base, tail gas inlet connection with gas-liquid separator's air inlet connection, natural gas inlet connection with the nozzle of ejector is connected, gas-liquid separator's gas vent with the shrink tube connection of ejector, gas-liquid separator's leakage fluid dram with waste water discharge connection, the diffuser with natural gas discharge connection.
In this scheme, gas-liquid separator and ejector all install in the base to set up tail gas air inlet, natural gas air inlet, waste water discharge interface and natural gas discharge interface on the base respectively, gas-liquid separator and ejector respectively with tail gas air inlet, natural gas air inlet, waste water discharge interface and natural gas discharge interface connection. The recovery system in this scheme can accomplish the equipment in the mill, forms the recovery system of sled dress. Can directly carry the base after the equipment is accomplished, can realize the transport of whole recovery system, after recovery system carries the place of production, the pipeline from other systems can be respectively with tail gas inlet connection, natural gas inlet connection, waste water discharge interface and natural gas discharge interface connection, can use after the pipe connection, need not on-the-spot equipment gas-liquid separator and ejector, also need not to assemble the pipeline between gas-liquid separator and the ejector, has reduced the equipment degree of difficulty. The construction efficiency of the exploitation site is improved without on-site assembly, and compared with on-site assembly, the exploitation site assembly requires high hoisting device cost, and the scheme of the application can also reduce the cost.
And in this scheme, after gas-liquid separator separates water and other gases in the TEG rectifying column tail gas, with the gas of separation input natural gas exhaust interface to the ejector, natural gas exhaust interface is used for connecting the natural gas pipe network for natural gas in the TEG rectifying column tail gas obtains retrieving, has improved natural gas output through the mode of retrieving, has reduced the waste of natural gas.
The second aspect of the utility model is used for solving the problem of poor water removal effect of the tail gas of the TEG rectifying tower.
When the ejector works, negative pressure is easily formed inside the gas-liquid separator, so that the problem that the tail gas is discharged from the exhaust port of the gas-liquid separator too quickly to avoid negative pressure, and the moisture in the tail gas is not completely removed is solved.
In the scheme, natural gas is input into the gas-liquid separator through the pressure supplementing pipeline, so that the pressure in the gas-liquid separator is not too low, and the natural gas is input, and the mixed gas in the gas-liquid separator is avoided. The pressure in the gas-liquid separator is kept above a certain value, so that the gas flow speed at the gas inlet end of the gas-liquid separator can be ensured not to be too high, the time for the tail gas in the gas-liquid separator to flow to the gas outlet is enough to remove water vapor, so that the moisture in the tail gas can be sufficiently removed, and a large amount of moisture is prevented from entering a natural gas pipe network from the gas outlet of the gas-liquid separator.
For further solving the problem that natural gas is always full of the gas-liquid separator and the tail gas entering efficiency is low, so that the gas-liquid separator is low in tail gas treatment efficiency, the pressure supplementing pipeline is provided with a first pressure relief valve, and the first pressure relief valve is controlled to be switched on and off according to the internal air pressure of the gas-liquid separator.
In the scheme, the first pressure release valve is controlled to be opened or closed according to the internal air pressure of the gas-liquid separator, when the internal air pressure of the gas-liquid separator is too low, the first pressure release valve is opened, so that natural gas in the pressure supplementing pipeline is supplemented to enter the gas-liquid separator, the flow speed of tail gas is reduced, and the moisture in the tail gas can be fully separated. When the air pressure in the gas-liquid separator is enough, the first pressure relief valve is closed, and the pressure supplementing pipeline stops supplying natural gas to the gas-liquid separator, so that the influence of the natural gas entering on the treatment efficiency of tail gas is avoided.
Preferably, the tail gas inlet interface and the natural gas inlet interface are arranged on the same side of the base, and the natural gas inlet interface and the natural gas outlet interface are respectively arranged on two sides of the base.
The tail gas comes from the TEG rectifying tower, and the natural gas can come from the natural gas separated from the TEG rectifying tower, so that the tail gas inlet interface and the natural gas inlet interface are arranged on the same side of the base, and the tail gas pipeline and the natural gas pipeline are conveniently distributed.
Because the natural gas inlet interface and the natural gas outlet interface are connected with the ejector and are used for conveying natural gas, if the natural gas inlet interface and the natural gas outlet interface are arranged on the same side, the condition of connecting a wrong pipeline easily occurs, and the natural gas inlet interface and the natural gas outlet interface are respectively arranged on two sides of the base, whether the connecting pipe is correct or not can be judged through the positions of other pipeline interfaces, and the connecting pipe is prevented from being in error.
Preferably, the base is provided with a lifting lug, and the lifting lug is used for lifting the base.
In this scheme, set up the lug and be convenient for shift whole sled dress through the mode of lifting by crane.
The utility model is used for solving the problem that the treatment of the tail gas of the TEG rectifying tower is required to be stopped during the maintenance and inspection of the ejector.
When the ejector needs to be maintained and checked, the ejector further comprises a vent pipeline for avoiding the problem of the blockage of the exhaust port of the gas-liquid separator, and the vent pipeline is communicated with the exhaust port of the gas-liquid separator.
In the scheme, if the ejector needs to be shut down, check and maintenance, the gas at the gas outlet of the gas-liquid separator can be conveyed to the emptying pipeline. A flare may be connected downstream of the vent line to directly burn off this portion of the gas.
For solving the ejector in the working process that gas enters the emptying pipeline, for this purpose, the emptying pipeline is provided with a second pressure relief valve, and the second pressure relief valve is controlled on-off according to the internal air pressure of the gas-liquid separator.
In the scheme, when the air pressure in the gas-liquid separator is too large, the ejector is stopped or the exhaust efficiency is too low, at the moment, the second pressure release valve is opened, and the gas in the gas-liquid separator can enter the emptying pipeline. After the air pressure in the gas-liquid separator is reduced, the second pressure relief valve is closed, so that excessive gas is prevented from entering the emptying pipeline, and the waste of natural gas is reduced.
The opening pressure value of the second relief valve is larger than the closing pressure value of the first relief valve. And the second pressure relief valve is prevented from being opened due to the natural gas entering from the pressure supplementing pipeline, so that the waste of the natural gas is avoided.
For solving the problem that when the tail gas enters the gas-liquid separator, the temperature is too high to cause a large amount of moisture in the tail gas to exist in a gas phase form, so that the gas-liquid separator cannot remove the moisture in the tail gas, and the problem that the effect is poor is solved.
In this scheme, set up water cooler cooling and get into gas-liquid separator's TEG rectifying column tail gas, make the moisture in the tail gas change into the liquid phase through the mode of cooling to make gas-liquid separator with moisture and other gas separation, avoid containing a large amount of moisture in the gas of retrieving, avoid a large amount of moisture to enter into in the natural gas pipe network.
In order to solve the problem that the installation efficiency is low because the cooling water equipment of the water cooler needs to be installed on a mining site, the recovery system further comprises a refrigerating unit, the refrigerating unit is connected with the base, and the water cooling pipeline is communicated with the refrigerating unit.
In this scheme, with refrigerating unit direct mount in the base for refrigerating unit can accomplish the equipment at the mill, need not to install at the place of production. The installation cost that the mode of sled dress reduces has improved the convenience.
In order to further solve the problem that the cooling effect is reduced due to the fact that the temperature of cooling water is continuously increased in the using process of the water cooler, the refrigerating unit is provided with a water inlet connector and a water outlet connector.
In this scheme, the refrigerating unit adopts external water source as cooling water, and external water source temperature is invariable, and external water source gets into from the inlet port, gets into the water cooler after refrigerating unit cooling, ensures that the temperature of water cooler remains stable to make the cooling effect remain stable. And the water discharged by the water cooler is cooled by the refrigerating unit and discharged from the water discharge port after being cooled. The discharged water is cooled and then discharged, so that the great influence of the discharged high temperature water on the environment temperature can be avoided, and the situation that the water temperature is too high to be used in other water positions is avoided.
To further solve the problem of moisture being discharged from the gas outlet of the gas-liquid separator in the form of foam or the like, the gas outlet of the gas-liquid separator is provided with a foam remover for this purpose.
In this scheme, set up the foam remover and can get rid of mixed lime set, foam in the gas, avoid moisture to discharge from the gas vent.
Preferably, the base is a frame structure composed of sectional materials, or the base is a structure composed of sectional materials and plates.
In the scheme, the base is manufactured by adopting the sectional material or the combination of the sectional material and the plate, and the material is low in cost and easy to process.
The utility model has the following beneficial effects:
According to the utility model, the gas-liquid separator and the ejector are respectively arranged on the base, and the tail gas inlet interface, the natural gas inlet interface, the waste water outlet interface and the natural gas outlet interface are respectively arranged on the base, so that the skid-mounted recovery system is formed, the assembly can be completed in a factory, the cost is reduced compared with the assembly in a mining site, and the construction efficiency of the mining site is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system according to the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. A base; 2. a vent line; 3. a refrigerating unit; 4. a drain port; 5. a water inlet port; 6. a tail gas inlet port; 7. a waste water discharge port; 8. a natural gas inlet interface; 9. an ejector; 10. a natural gas exhaust port; 11. a pressure supplementing pipeline; 12. a gas-liquid separator; 13. a demister; 14. a second pressure relief valve; 15. a first pressure relief valve; 16. a water cooler; 17. a water pump; 18. a power distribution cabinet; 19. lifting lugs.
Detailed Description
The technical scheme of the utility model is clearly and completely described by a specific implementation mode of the embodiment of the utility model with the aid of the attached drawings.
Example 1
Referring to fig. 1, a skid-mounted tail gas recovery device is provided in the first embodiment, and includes a base 1, a gas-liquid separator 12 and an ejector 9, wherein the gas-liquid separator 12 and the ejector 9 are respectively connected with the base 1. The gas-liquid separator 12 of the related art is provided with a gas inlet for inputting a gas mixed with a liquid substance, a gas outlet for discharging a gas from which the liquid substance is removed, and a liquid discharge port for discharging the separated liquid. The ejector 9 in the prior art comprises a nozzle, a contraction pipe and a diffusion pipe, wherein the nozzle is used for inputting high-pressure gas, negative pressure is generated when the input high-pressure gas flows, the contraction pipe is usually used for inputting low-pressure gas, the negative pressure drives the gas in the contraction pipe to flow, and the diffusion pipe is used for exhausting gas.
The base 1 is further provided with a tail gas inlet interface 6, a natural gas inlet interface 8, a waste water discharge interface 7 and a natural gas discharge interface 10, the tail gas inlet interface 6 is used for inputting tail gas of the TEG rectifying tower, the tail gas inlet interface 6 is connected with an air inlet of the gas-liquid separator 12, and moisture in the tail gas is separated through the gas-liquid separator 12. The gas separated by the gas-liquid separator 12 is discharged from the gas outlet, the gas outlet is connected with the contraction pipe of the ejector 9 through a pipeline, the natural gas inlet connector 8 is used for supplying high-pressure natural gas, the natural gas inlet connector 8 is connected with the nozzle of the ejector 9, and high-pressure air flow is provided for the ejector 9, so that low-pressure gas discharged by the gas-liquid separator 12 is guided to flow, and is guided to the natural gas discharge connector 10, and discharged from the natural gas discharge connector 10 to a natural gas pipe network, so that natural gas is recovered. The natural gas yield is improved by recovering natural gas from the tail gas of the TEG rectifying tower. The water separated by the gas-liquid separator 12 is discharged from the waste water discharge port 7 to other water treatment mechanisms.
Install gas-liquid separator 12, ejector 9, tail gas inlet port 6, natural gas inlet port 8, waste water discharge port 7 and natural gas discharge port 10 on base 1, form the recovery system of sled dress, the recovery system of sled dress can accomplish the equipment in the mill, whole sled dress can direct transportation to the exploitation place, after transporting the sled dress to the exploitation place, respectively on tail gas inlet port 6, natural gas inlet port 8, waste water discharge port 7 and natural gas discharge port 10 connect corresponding pipeline and can use. Besides the process of carrying and skid-mounting, the other processes do not need to adopt lifting devices, so that the use date of the lifting devices in the whole field can be reduced, the installation cost is reduced, the manual assembly in the mining field is not needed, the cost of labor cost, meal travel cost and the like of technicians is not needed, and the effect of reducing the cost is achieved. And the construction efficiency of the mining site can be improved without manual assembly on the mining site.
The exhaust port of the gas-liquid separator 12 is provided with a demister 13 for removing condensate entrained in the gas.
The base 1 is provided with a refrigeration mounting hole which is used for fixing the refrigerating unit 3. The refrigerating unit 3 is connected with the refrigerating installation hole through a fastener, for example, the refrigerating unit 3 can be fixedly connected by adopting a fastener such as a bolt. The air inlet of the gas-liquid separator 12 is provided with a water cooler 16, and the refrigerating unit 3 is connected with the water cooler 16 through a pipeline. And cooling the tail gas by adopting a water cooling mode to cool and solidify the vapor in the vapor phase into a liquid phase. The refrigeration unit 3 is used to provide the water cooler 16 with cryogenic cooling water. The refrigerating unit 3 is provided with a water inlet port 5 and a water outlet port 4, the water inlet port 5 can be connected with a tap water pipe, and tap water is cooled and then conveyed to a water cooler 16 for use. The water of the water cooler 16 absorbs heat in the tail gas and then is discharged to the refrigerating unit 3, and the refrigerating unit 3 cools the water and then is discharged from the water discharge port 4. That is, the tap water with stable temperature is always supplied to the water inlet 5 of the refrigerating unit 3, and the cooling water supplied to the water cooler 16 is also stable, so that the cooling effect of the water cooler 16 is always stable.
The water inlet interface 5 and the water outlet interface 4 of the refrigerating unit are arranged on the same side, and the water inlet interface 5, the water outlet interface 4 and the wastewater outlet interface 7 are arranged on the same side of the base 1, so that the connection direction of water pipes is uniform, and the water pipes are convenient to arrange.
The natural gas inlet interface 8 and the tail gas inlet interface 6 are positioned on the same side of the base 1, the tail gas input by the tail gas inlet interface 6 comes from the TEG rectifying tower, and the natural gas input by the natural gas inlet interface 8 can also come from the natural gas separated by the TEG rectifying tower, so that the natural gas pipeline and the tail gas pipeline are conveniently distributed. The natural gas exhaust port 10 and the natural gas inlet port 8 are respectively arranged at two sides of the base 1, and are used for avoiding the misconnection of the pipeline natural gas exhaust port 10 and the natural gas inlet port 8.
The base 1 may be a frame structure formed by using a profile, for example, a rectangular frame structure formed by using angle steel or i-steel through welding or bolting.
The base 1 may also be a platform-shaped structure formed by forming a frame with a plate, for example, angle steel or i-steel, and fixing a steel plate on the frame by welding or bolting to form a platform-shaped structure.
The base can be provided with a pump mounting hole for mounting a water pump 17, and the water pump 17 is used for pumping water in the gas-liquid separator 16. That is, the water outlet of the gas-liquid separator 16 is connected to the water inlet of the water pump 17, and the water outlet of the water pump 17 is connected to the waste water discharge port 7.
Still be provided with the distribution mounting hole on the base 1, the distribution mounting hole is used for installing switch board 18, switch board 18 pass through the fastener with the distribution mounting hole is connected. The power distribution cabinet 18 is used for distributing power to the gas-liquid separator 16 and the water pump 17.
The base 1 can be further provided with a lifting lug 19, and the lifting lug 19 is of an annular structure fixed on the base 1 through welding or bolts. When the whole skid-mounted device needs to be carried, the lifting hook of the lifting device can be matched with the lifting lug 19 to realize lifting skid-mounted. Four lifting lugs 19 are arranged on the base 1, and the four lifting lugs 19 are uniformly arranged on two sides of the base. For example, two opposite sides of the base 1 are respectively provided with two lifting lugs 19, and the two lifting lugs 19 on each side are respectively positioned at two ends of the side.
Example two
The second embodiment provides skid-mounted tail gas recovery equipment, which is different from the first embodiment in that the second embodiment is different from the first embodiment in that the gas-liquid separator 12 is further connected with a pressure supplementing pipeline 11, so as to avoid the low air pressure in the gas-liquid separator 12.
The gas-liquid separator 12 is provided with a pressure supplementing interface, and the pressure supplementing interface is used for stabilizing the air pressure in the gas-liquid separator 12 and avoiding the air pressure in the gas-liquid separator 12 from being too low. The pressure supplementing interface is arranged at the top of the gas-liquid separator 12, and is connected with a pressure supplementing pipeline 11. The pressure supplementing pipeline 11 is used for conveying natural gas into the gas-liquid separator 12. The pressure compensating pipeline 11 may adopt the following two embodiments, one is a pipeline connected from an external natural gas pipe network, and the other is a pipeline connected from the natural gas inlet interface 8.
In practice, a line from the natural gas inlet 8 is preferably used as the pressure compensation line 11. The implementation mode can reduce the number of interfaces on the skid-mounted device, is convenient to connect with an external system, and simplifies the structure. The natural gas inlet port 8 is connected with the spray head of the ejector 9 through a pipeline, a tee joint is arranged on the pipeline between the natural gas inlet port 8 and the ejector 9, one end of the pressure supplementing pipeline 11 is connected with the tee joint, and the other end of the pressure supplementing pipeline is connected with the pressure supplementing port, so that natural gas input by the natural gas port can enter the gas-liquid separator 12, and the gas pressure in the gas-liquid separator 12 is prevented from being too low.
The pressure supplementing pipeline 11 is further provided with a first pressure relief valve 15, the opening and closing of the first pressure relief valve 15 depends on the air pressure in the gas-liquid separator 12, when the air pressure in the gas-liquid separator 12 is lower than a set value, the first pressure relief valve 15 is opened, natural gas can enter the gas-liquid separator 12 through the first pressure relief valve 15, when the air pressure in the gas-liquid separator 12 is higher than a set value, the first pressure relief valve 15 is closed, and the pressure supplementing pipeline 11 stops supplementing the natural gas into the gas-liquid separator 12. The setting values corresponding to the opening and closing of the first relief valve 15 may be the same or different, and the setting value for closing the first relief valve 15 is larger than the setting value for opening the first relief valve 15. The first relief valve 15 may be an adjustable relief valve for adjusting the air pressure setting for opening and closing the first relief valve 15.
Example III
The third embodiment provides a skid-mounted tail gas recovery device, which, unlike the first embodiment, further includes a vent line 2.
The exhaust port of the gas-liquid separator 12 is connected with the shrinkage pipe of the ejector 9 through a pipeline, a tee joint is arranged on the pipeline, one end of the vent pipeline 2 is connected with the tee joint, and the other end of the vent pipeline 2 can be connected with a torch to burn and dispose redundant gas.
The vent pipeline 2 is provided with a valve, and the valve is in a closed state during normal operation, so that waste caused by gas discharged from the gas-liquid separator 12 entering the vent pipeline 2 is avoided. When the ejector 9 fails and the gas cannot be discharged from the discharge port of the gas-liquid separator 12 or the discharge efficiency of the ejector 9 cannot meet the requirements of the gas-liquid separation tank, a valve can be opened to convey redundant gas to the torch for combustion treatment.
The valve may be a manual valve or an automatic valve.
The valve is preferably an automatic valve, and the automatic valve can be automatically opened when the valve needs to be opened, so that the problem that the gas cannot be discharged by the gas-liquid separator 12 to stop treating the tail gas of the TEG rectifying tower is avoided.
The automatic valve adopts a second pressure relief valve 14, and the second pressure relief valve 14 is opened or closed according to the air pressure in the air-liquid separator 12. When the air pressure in the air-liquid separator 12 is higher than a set value, the air with the moisture removed in the air-liquid separator 12 influences the tail gas of the TEG rectifying tower to enter, then the second pressure release valve 14 is opened, the air with the moisture removed enters the emptying pipeline 2, and then the air enters the flare combustion treatment. When the gas pressure in the gas-liquid separator 12 is reduced and is lower than a set value, the second pressure release valve 14 is closed, so that the waste of gas is avoided. The corresponding air pressure setting values for opening and closing the second relief valve 14 can be the same or different, and the opening setting value is larger than the closing setting value.
The third embodiment can also be applied to the second embodiment. When the third embodiment is applied to the second embodiment, the set values of the second relief valve 14 opened or closed are larger than the set values of the first relief valve 15 opened or closed. The waste of the natural gas input by the pressure supplementing pipeline 11 discharged from the emptying pipeline 2 is avoided.
Claims (10)
1. Skid-mounted tail gas recovery equipment, its characterized in that: including base (1), gas-liquid separation ware (12) and ejector (9), be provided with tail gas inlet connection (6), natural gas inlet connection (8), waste water discharge connection (7) and natural gas discharge connection (10) on base (1), gas-liquid separation ware (12) and ejector (9) are installed in base (1), tail gas inlet connection (6) with the air inlet of gas-liquid separation ware (12), natural gas inlet connection (8) with the nozzle of ejector (9) is connected, the gas vent of gas-liquid separation ware (12) with the shrink union coupling of ejector (9), the leakage fluid dram of gas-liquid separation ware (12) with waste water discharge connection (7) are connected, the diffusion pipe of ejector (9) with natural gas discharge connection (10).
2. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the gas-liquid separator (12) is provided with a pressure supplementing interface for supplementing air pressure in the gas-liquid separator (12), the pressure supplementing interface is connected with a pressure supplementing pipeline (11), and the pressure supplementing pipeline (11) is used for inputting natural gas into the gas-liquid separator (12).
3. The skid-mounted tail gas recovery apparatus of claim 2, wherein: the pressure supplementing pipeline (11) is provided with a first pressure relief valve (15), and the first pressure relief valve (15) is controlled to be opened and closed according to the internal air pressure of the air-liquid separator (12).
4. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the tail gas inlet interface (6) and the natural gas inlet interface (8) are arranged on the same side of the base (1), and the natural gas inlet interface (8) and the natural gas outlet interface (10) are respectively arranged on two sides of the base (1).
5. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the base (1) is provided with a lifting lug (19), and the lifting lug (19) is used for lifting the base (1).
6. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the device also comprises a vent pipeline (2), wherein the vent pipeline (2) is communicated with the exhaust port of the gas-liquid separator (12).
7. The skid-mounted tail gas recovery apparatus of claim 6, wherein: the emptying pipeline (2) is provided with a second pressure relief valve (14), and the second pressure relief valve (14) is controlled to be opened and closed according to the internal air pressure of the air-liquid separator (12).
8. The skid-mounted tail gas recovery apparatus of claim 7, wherein: the base (1) is provided with a refrigeration mounting hole, the air inlet end of the gas-liquid separator (12) is provided with a water cooler (16), the refrigeration mounting hole is used for mounting a refrigerating unit (3), the refrigerating unit (3) is connected with the base (1), and the water cooling pipeline is communicated with the refrigerating unit (3).
9. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the refrigerating unit (3) is provided with a water inlet interface (5) and a water outlet interface (4).
10. The skid-mounted tail gas recovery apparatus of claim 1, wherein: the base (1) is a frame structure formed by sectional materials, or the base (1) is a structure formed by sectional materials and plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322869457.3U CN221085163U (en) | 2023-10-24 | 2023-10-24 | Skid-mounted tail gas recovery equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322869457.3U CN221085163U (en) | 2023-10-24 | 2023-10-24 | Skid-mounted tail gas recovery equipment |
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| Publication Number | Publication Date |
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| CN221085163U true CN221085163U (en) | 2024-06-07 |
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|---|---|---|---|
| CN202322869457.3U Active CN221085163U (en) | 2023-10-24 | 2023-10-24 | Skid-mounted tail gas recovery equipment |
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| Country | Link |
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| CN (1) | CN221085163U (en) |
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