CN220812312U - Natural gas dehydration and heavy hydrocarbon removal system - Google Patents
Natural gas dehydration and heavy hydrocarbon removal system Download PDFInfo
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- CN220812312U CN220812312U CN202322587846.7U CN202322587846U CN220812312U CN 220812312 U CN220812312 U CN 220812312U CN 202322587846 U CN202322587846 U CN 202322587846U CN 220812312 U CN220812312 U CN 220812312U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003345 natural gas Substances 0.000 title claims abstract description 34
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 22
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 22
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 21
- 230000018044 dehydration Effects 0.000 title claims abstract description 17
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000012856 packing Methods 0.000 claims abstract description 43
- 238000001035 drying Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000001179 sorption measurement Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000007664 blowing Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Drying Of Gases (AREA)
Abstract
The utility model discloses a natural gas dehydration and heavy hydrocarbon removal system, belongs to the technical field of natural gas purification, and aims to solve the technical problems that the production electricity consumption is increased due to the operation of the existing purification device, and energy conservation and consumption reduction are not facilitated. The device comprises a raw material gas pipeline, a packing tower capable of sequentially and alternately carrying out adsorption, cooling and heating processes, a heating furnace, a drying bed, a condenser and a gas-liquid separator. According to the utility model, the pressure difference valve is used for generating pressure difference to enable the regenerated gas to flow, and after the regenerated gas sequentially passes through the heating furnace, the drying bed and the packing tower and returns to the pressure difference valve, a compressor is not needed to be used for providing power for the regenerated gas to return to the main natural gas pipeline, so that the power consumption of production is effectively reduced, and the purpose of energy conservation is achieved.
Description
Technical Field
The utility model relates to the technical field of natural gas purification, in particular to a natural gas dehydration and heavy hydrocarbon removal system.
Background
When natural gas is treated in industrial production, molecular sieves are generally used as a filler to remove water in the natural gas, and activated carbon is used as a filler to remove heavy hydrocarbons in the natural gas. The packing towers are usually provided with 2-3 alternately used, so that continuous and stable production of the system is ensured, and the more the number of the packing towers is, the more complicated the operation is. When being adsorbed in one tower, the natural gas is mainly used as a raw material to adsorb water or heavy hydrocarbon in the natural gas; and regenerating the other tower, and introducing dry regenerated gas to regenerate the packed tower.
In the prior art, a compressor is generally used for pressurizing and conveying regenerated gas to the upstream side for mixing with raw natural gas, but the operation of the compressor causes the increase of production electricity consumption, which is unfavorable for energy conservation and consumption reduction, so a natural gas dehydration and heavy hydrocarbon removal system is developed, and the regenerated gas of the system flows through differential pressure, so that the system is efficient and simple in use and low in energy consumption.
Disclosure of utility model
The utility model aims to provide a natural gas dehydration and heavy hydrocarbon removal system, which aims to solve the technical problems that the production electricity consumption is increased and the energy conservation and consumption reduction are not facilitated due to the operation of the existing purification device.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a natural gas dehydration and heavy hydrocarbon removal system, which comprises a raw gas pipeline, a packing tower capable of sequentially and alternately carrying out adsorption, cooling and heating processes, a heating furnace, a drying bed, a condenser and a gas-liquid separator, wherein the raw gas pipeline is connected with the packing tower; wherein,
The first outlet of the raw material gas pipeline is connected with the top of the packing tower, a differential pressure valve is arranged between the first outlet of the raw material gas pipeline and the packing tower, the front-back differential pressure of the valve is regulated through the differential pressure valve, and the top outlet of the packing tower is connected with the inlet of the condenser; the bottom outlet of the packed tower releases natural gas to downstream through valves V9 and V11;
The second outlet of the raw material gas pipeline is connected with the inlet of the heating furnace, the outlet of the heating furnace is connected with the inlet of the drying bed, the first outlet and the second outlet of the drying bed are connected with the bottom of the filler tower, and the third outlet of the drying bed is connected with the inlet of the condenser;
The outlet of the condenser is connected with the inlet of the gas-liquid separator, and the condensate is removed in the gas-liquid separator and then enters the downstream of the differential pressure valve to be mixed with the raw material gas and then enters the adsorption packing tower.
Further, a flow control valve is arranged between the raw material gas pipeline and the heating furnace.
Further, the packed column comprises a first packed column and a second packed column.
Further, the first outlet of the differential pressure valve is connected with the top of the first packing tower through a valve V1 and a valve V2 respectively; the second outlet of the differential pressure valve is connected with the top of the second packing tower through a valve V5 and a valve V6 respectively.
Further, the outlet at the top of the first packed tower is connected with a condenser through a valve V3 and a valve V4; and the outlet at the top of the second packed tower is connected with the condenser through a valve V7 and a valve V8.
Further, the first outlet of the drying bed is connected with the bottom of the first filling tower through a valve V10; the second outlet of the drying bed is connected with the bottom of the second filler tower through a valve V12; the third outlet of the desiccant bed is connected to the condenser via valve V13.
Based on the technical scheme, the embodiment of the utility model at least has the following technical effects:
(1) According to the natural gas dehydration and heavy hydrocarbon removal system provided by the utility model, the pressure difference valve is used for generating the pressure difference so that the regenerated gas can have potential energy, and after the regenerated gas sequentially passes through the heating furnace, the drying bed and the packing tower and returns to the pressure difference valve, a compressor is not needed to provide power for the regenerated gas to return to the main natural gas pipeline. The drying tower is mainly used for drying the regenerated gas, so that the regenerated gas entering the packing tower is free of water, when the packing tower is heated, the drying tower is heated first and then the packing tower is heated, the drying tower and the packing tower are guaranteed to be regenerated simultaneously, and when the packing tower is cooled, moisture from the differential pressure valve is captured and removed by the drying tower preferentially, so that the drying of the fed packing tower is guaranteed.
(2) According to the natural gas dehydration and heavy hydrocarbon removal system provided by the utility model, the pressure difference valve is used for generating pressure difference to enable the regenerated gas to flow, and after the regenerated gas sequentially passes through the heating furnace, the drying bed and the packing tower and returns to the pressure difference valve, a compressor is not needed to provide power for the regenerated gas to return to the main natural gas pipeline, so that the production electricity consumption is effectively reduced, and the purpose of energy conservation is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
In the above figures, the reference numerals correspond to the component names as follows:
1. A feed gas conduit; 2. a differential pressure valve; 3. a packed tower; 31. a first packed column; 32. a second packed column; 4. a heating furnace; 5. a drying bed; 6. a condenser; 7. a gas-liquid separator; 8. a flow control valve.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present invention.
The technical scheme of the utility model is described in detail below with reference to the specific drawings.
Example 1
As shown in fig. 1, a natural gas dehydration and heavy hydrocarbon removal system comprises a raw gas pipeline 1, a first packed tower 31, a second packed tower 32, a heating furnace 4, a drying bed 5, a condenser 6 and a gas-liquid separator 7, wherein the adsorption, cooling and heating processes can be sequentially and alternately carried out;
The first outlet of the raw material gas pipeline 1 is connected with the top of the packing tower 3, a differential pressure valve 2 is arranged between the first outlet of the raw material gas pipeline 1 and the packing tower 3, the opening of the differential pressure valve 2 is adjusted, the natural gas pressure is reduced to 0.2Mpa, then the natural gas enters the first packing tower 31, and the water or heavy hydrocarbon in the natural gas is removed and then enters the downstream working section.
A small part of natural gas is led out from a feed gas pipeline 1 before a differential pressure valve 2 to be used as regenerated gas, the regenerated gas flow is 1/10 of the feed gas pipeline flow, the regenerated gas sequentially enters a heating furnace 4 to be heated after the flow is regulated by a flow control valve 8, then enters a second packing tower 32 after passing through a drying bed 5, is heated and regenerated from bottom to top, water or heavy hydrocarbon adsorbed in a packing gap is gasified and carried out after being heated, is accumulated into a liquid state in a gas-liquid separator 7 after passing through a condenser 6, and water removal from the system is completed through a liquid discharge valve at the bottom of the gas-liquid separator 7.
In a specific embodiment, the outlet of the condenser 6 is connected with the inlet of the gas-liquid separator 7, and enters the downstream of the differential pressure valve 2 after condensate is removed in the gas-liquid separator 7, and is mixed with feed gas to enter the packed tower 3 under adsorption to remove water or heavy hydrocarbon.
In a specific embodiment, after the second packed tower 32 is heated to the rated temperature, the heating furnace is stopped to cool the second packed tower by cold blowing, and the flow of regenerated gas is not changed during cold blowing.
In a specific embodiment, the packed tower 3 automatically operates according to a mature dehydration or hydrocarbon removal bed switching process, and no artificial action is required under normal conditions, and only process parameters are required to be set.
In a specific embodiment, a flow control valve 8 is arranged between the raw gas pipeline 1 and the heating furnace 4.
In a specific embodiment, the first outlet of the differential pressure valve 2 is connected to the top of the first packed tower 31 through a valve V1 and a valve V2, respectively; the second outlet of the differential pressure valve 2 is connected to the top of the second packed column 32 via valve V5 and valve V6, respectively.
In a specific embodiment, the top outlet of the first packed tower 31 is connected with the condenser 6 through a valve V3 and a valve V4; the top outlet of the second packed tower 32 is connected with the condenser 6 through a valve V7 and a valve V8.
In a specific embodiment, the first outlet of the dry bed 5 is connected to the bottom of the first packed column 31 by a valve V9 and a valve V10; the second outlet of the drying bed 5 is connected with the bottom of the second packed tower 32 through a valve V11 and a valve V12; the third outlet of the desiccant bed 5 is connected to the condenser 6 via a valve V13.
When the system is running, the switching of the two packed towers is carried out according to the self-control program, the switching sequence of the valves V1-V13 is automatically adjusted according to the mature logic program,
The first step of the program: double tower adsorption, namely valve V2, valve V6, valve V9, valve V11 and valve V13 are opened, and other valves of the automatic control program are closed;
And a second step of: automatically closing the valve V2 and the valve V9, automatically opening the valve V3, pressurizing the first packed tower 31, opening the valve V4 and the valve V10 after the pressure of the first packed tower 31 is consistent with the regenerated gas pressure, closing the valve V3 and closing the valve V13;
And a third step of: automatically starting the heating furnace 4, stopping the heating furnace 4 after the packing tower 3 is heated to the rated temperature, then cold blowing, opening the valve V13 after the packing tower 3 is cooled to the normal temperature, closing the valve V4 and the valve V10, opening the valve V1 to decompress the first packing tower 31, and entering the waiting time;
Fourth step: after the rated adsorption time of the second packed tower 32 is reached, opening a valve V2 and a valve V9, closing a valve V1, and entering the double towers again for simultaneous adsorption;
Fifth step: the valve V6 and the valve V11 are closed, and the same processes of pressurizing, heating, cold blowing, pressure releasing, waiting and the like as the first packed tower 31 are performed, so that the continuous reciprocating alternate use is performed, and the continuous stable production is maintained.
The system is characterized in that a differential pressure valve is used for generating differential pressure so that the regenerated gas can have potential energy, and the regenerated gas returns to the differential pressure valve after sequentially passing through a heating furnace, a drying bed and a packing tower, so that a compressor is not needed to provide power for the regenerated gas to return to a main natural gas pipeline. The drying tower is mainly used for drying the regenerated gas, so that the regenerated gas entering the packing tower is free of water, when the packing tower is heated, the drying tower is heated first and then the packing tower is heated, the drying tower and the packing tower are guaranteed to be regenerated simultaneously, and when the packing tower is cooled, moisture from the differential pressure valve is captured and removed by the drying tower preferentially, so that the drying of the fed packing tower is guaranteed.
When the drying bed is heated, the moisture in the drying bed is released to enter the packing tower, and the moisture cannot be captured by the packing tower due to the fact that the temperature of the drying bed is higher, the moisture in the packing tower is brought out while the temperature of the packing tower is driven to rise, and the limit use time of the drying bed is that the waiting time from stopping the heating furnace to the packing tower is over and is much smaller than that of the packing tower.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A natural gas dehydration and heavy hydrocarbon removal system, which is characterized in that: comprises a raw material gas pipeline (1), a packing tower (3) capable of sequentially and alternately carrying out adsorption, cooling and heating processes, a heating furnace (4), a drying bed (5), a condenser (6) and a gas-liquid separator (7); wherein,
The first outlet of the raw material gas pipeline (1) is connected with the top of the packed tower (3), a differential pressure valve (2) is arranged between the first outlet of the raw material gas pipeline (1) and the packed tower (3), the front-back differential pressure of the valve is regulated through the differential pressure valve (2), and the top outlet of the packed tower (3) is connected with the inlet of the condenser (6); the bottom outlet of the packed tower (3) releases natural gas to downstream through valves V9 and V11;
The second outlet of the raw material gas pipeline (1) is connected with the inlet of the heating furnace (4), the outlet of the heating furnace (4) is connected with the inlet of the drying bed (5), the first outlet and the second outlet of the drying bed (5) are connected with the bottom of the packed tower (3), and the third outlet of the drying bed (5) is connected with the inlet of the condenser (6);
The outlet of the condenser (6) is connected with the inlet of the gas-liquid separator (7), condensate is removed in the gas-liquid separator (7), and then enters the downstream of the differential pressure valve (2) to be mixed with feed gas and enter the adsorption packing tower (3).
2. The natural gas dehydration and heavy hydrocarbon removal system of claim 1, wherein: a flow control valve (8) is arranged between the raw material gas pipeline (1) and the heating furnace (4).
3. The natural gas dehydration and heavy hydrocarbon removal system of claim 1, wherein: the packed column (3) comprises a first packed column (31) and a second packed column (32).
4. The natural gas dehydration and heavy hydrocarbon removal system of claim 3, wherein: the first outlet of the differential pressure valve (2) is connected with the top of the first packed tower (31) through a valve V1 and a valve V2 respectively; the second outlet of the differential pressure valve (2) is connected with the top of the second packed tower (32) through a valve V5 and a valve V6 respectively.
5. The natural gas dehydration and heavy hydrocarbon removal system of claim 3, wherein: the top outlet of the first packed tower (31) is connected with the condenser (6) through a valve V3 and a valve V4; the top outlet of the second packed tower (32) is connected with the condenser (6) through a valve V7 and a valve V8.
6. The natural gas dehydration and heavy hydrocarbon removal system of claim 3, wherein: the first outlet of the drying bed (5) is connected with the bottom of the first packed tower (31) through a valve V10; the second outlet of the drying bed (5) is connected with the bottom of the second packed tower (32) through a valve V12; the third outlet of the drying bed (5) is connected with the condenser (6) through a valve V13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322587846.7U CN220812312U (en) | 2023-09-22 | 2023-09-22 | Natural gas dehydration and heavy hydrocarbon removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322587846.7U CN220812312U (en) | 2023-09-22 | 2023-09-22 | Natural gas dehydration and heavy hydrocarbon removal system |
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| Publication Number | Publication Date |
|---|---|
| CN220812312U true CN220812312U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322587846.7U Active CN220812312U (en) | 2023-09-22 | 2023-09-22 | Natural gas dehydration and heavy hydrocarbon removal system |
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| Country | Link |
|---|---|
| CN (1) | CN220812312U (en) |
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2023
- 2023-09-22 CN CN202322587846.7U patent/CN220812312U/en active Active
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