CN203777901U - Constant-temperature absorption equipment removing carbon dioxide from biogas - Google Patents
Constant-temperature absorption equipment removing carbon dioxide from biogas Download PDFInfo
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- CN203777901U CN203777901U CN201420133429.3U CN201420133429U CN203777901U CN 203777901 U CN203777901 U CN 203777901U CN 201420133429 U CN201420133429 U CN 201420133429U CN 203777901 U CN203777901 U CN 203777901U
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- gas
- biogas
- carbon dioxide
- electric heater
- regenerator
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Abstract
The utility model provides constant-temperature absorption equipment removing carbon dioxide from biogas. The equipment comprises an absorption tower and a regeneration tower, wherein the lower part of the absorption tower is connected with a fan which is used for conveying biogas, the bottom of the absorption tower is connected with the top of the regeneration tower, and an electric heater is arranged at the bottom of the regeneration tower and is connected to the top of the absorption tower; the top of the regeneration tower is further connected with a decarburized solution storage tank by virtue of a control valve set and a return pump; the equipment further comprises a blower which is connected with a gas-gas heat exchanger and a spiral piece electric heater. The spiral piece electric heater is connected with the lower part of a solution stay area at the bottom of the regeneration tower. The equipment can be used for realizing steam-free absorption and regeneration of a decarburized solution at a constant temperature, and is low in cost, low in operating cost and high in heat utilization ratio, so that the application of purifying biogas by an absorption method is wider.
Description
Technical field
The utility model relate to a kind of from biogas the equipment of carbon dioxide removal, particularly a kind ofly absorb and the equipment of regeneration for decarbonizing solution constant temperature.
Background technology
Absorption process has the feature of very high Selective Separation because of it to methane in sewage gas and carbon dioxide component, and prepares pipe natural gas or vehicle-mounted compressed natural gas field has obtained application very widely at methane purification.
Tradition absorption process is to utilize By Amine Solutions to realize separating of carbon dioxide in methane with the physical chemistry absorption characteristic of carbon dioxide, i.e. pressurization in absorption tower, under normal temperature condition, carbon dioxide generation absorption reaction in By Amine Solutions and biogas carries out decarburization purification methane, the decarbonizing solution that absorbs dioxy carbon becomes rich solution, the decompression of rich solution in regenerator, under heating condition, the reaction of generation resolving inversely, discharge highly purified carbon dioxide, rich solution is regenerated simultaneously, again possesses the ability of absorbing carbon dioxide, thereby realize the continuous decarburization purification methane process of biogas in absorption tower, and make decarbonizing liquid carry out continuous absorption, recycling utilization.
In rich solution when regeneration,, need to consume a large amount of steam and boil rich solution and realize regeneration with release of carbon dioxide, and meanwhile, the high temperature absorption liquid after regeneration needs again after lowering the temperature, just can be sent into absorption tower and again participate in the separate absorbent process of carbon dioxide in methane.Traditional absorption process steam consumption is large, capacity usage ratio is low, heat transmission equipment investment is large, and especially for the enterprise that there is no steam boiler, the limitation of this method is more obvious.
Utility model content
The purpose of this utility model is to provide one that decarbonizing solution is absorbed and regeneration without steam constant temperature, and cost is low, and operating cost is low, the constant temperature absorption equipment of carbon dioxide removal from biogas that heat utilization efficiency is high.
For achieving the above object, the technical scheme that the utility model provides is:
The constant temperature absorption equipment of carbon dioxide removal from biogas, comprise absorption tower, regenerator, bottom, described absorption tower connects the blower fan of carrying compressed biogas, bottom, absorption tower connects the top spray device of described regenerator by Liquid level adjusting valve, regenerator bottom is provided with electric heater, and connects the top spray device on absorption tower by pump; Described regenerator top is also connected with decarbonizing solution storage tank by control valve group, reflux pump; Also comprise air blast, described air blast connects gas-gas heat exchanger and flight electric heater, and flight electric heater is connected to the bottom, solution stacking area of regenerator bottom by gas distributor.
Preferably, described reflux pump connects a PLC control system.
Preferably, top, described absorption tower connects the first gas-liquid cooler, the first gas-liquid separator successively, and described the first gas-liquid separator is connected to decarbonizing solution storage tank by tapping valve.
Preferably, described regenerator top connects gas-gas heat exchanger, the second gas-liquid cooler, the second gas-liquid separator successively, and described gas-liquid separator is connected to decarbonizing solution storage tank by tapping valve.
Preferably, between described gas-gas heat exchanger and air blast, be provided with accurate filter.
Preferably, described flight electric heater and electric heater are provided with attemperating unit at outlet respectively.
A technical scheme tool in technique scheme has the following advantages or beneficial effect: the constant temperature absorption equipment of this biogas carbon dioxide removal, can realize absorbing and regeneration without steam constant temperature of decarbonizing solution, without setting up steam boiler, at utmost recovery system heat, can reduce equipment investment cost, reduce operating cost simultaneously, make the application scenario of absorption process purifying biogas more extensive.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be done to simple introduction below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
Below by specific embodiment, the utility model is further described.
The constant temperature absorption equipment of carbon dioxide removal from biogas of this embodiment, comprise absorption tower 4, regenerator 8,4 bottoms, absorption tower connect the blower fan of carrying compressed biogas, 4 bottoms, absorption tower connect the top spray device of regenerator 8 by Liquid level adjusting valve 5, regenerator 8 bottoms are provided with electric heater 7, and connect the top spray device on absorption tower 4 by pump 6; Regenerator 8 tops are also connected with decarbonizing solution storage tank 16 by control valve group 18, reflux pump 17, and reflux pump 17 connects a PLC control system.4 tops, absorption tower connect the first gas-liquid cooler 3 successively, the first gas-liquid separator 1, the first gas-liquid separator 1 is connected to decarbonizing solution storage tank 16 by tapping valve 2; Regenerator 8 tops connect successively gas-gas heat exchanger 10, the second gas-liquid cooler 11, the second gas-liquid separator 14, the second gas-liquid separators 14 and are connected to decarbonizing solution storage tank 16 by tapping valve 2.
Also comprise air blast 13, air blast 13 connects gas-gas heat exchanger 10 and flight electric heater 9, and flight electric heater 9 is connected to the bottom, solution stacking area of regenerator 8 bottoms by gas distributor.Between gas-gas heat exchanger 10 and air blast 13, be provided with accurate filter 12.Flight electric heater 9 and electric heater 7 are provided with attemperating unit 15 at outlet respectively.
The constant temperature absorption process that utilizes the equipment of this embodiment to remove carbon dioxide in methane is specially:
Biogas after supercharging is passed into absorption tower 4, interior absorption tower 4 absorption pressure is controlled to 0.6～1.0MPa, biogas with from the tower top spray on absorption tower 4 and the decarbonizing solution of 80～85 DEG C in the surperficial counter current contacting of inner-tower filling material, carbon dioxide is absorbed to shift and enters decarbonizing solution, purification artifact natural gas is discharged from 4 tops, absorption tower, then after the first gas-liquid cooler 3 is cooling, isolates by the first gas-liquid separator 1 absorption liquid of carrying under one's arms and enter subsequent handling.
The decarbonizing solution that has absorbed carbon dioxide utilizes pressure reduction to enter the top of regenerator 8 by Liquid level adjusting valve 5, from tower top spray and; Air is delivered to accurate filter 12 by air blast 13 superchargings simultaneously, remove fine dusts particle, then by gas-gas heat exchanger 10, reclaim the heat of resolution gas carbon dioxide and heated for the first time, realized and be heated to for the second time 80～85 DEG C by flight electric heater 9 again, the heat that adds of flight electric heater 9 is adjusted by the attemperating unit 15 on gas outlet tube; Air after heating enters regenerator 8 bottoms, solution stacking area through gas distributor.Hot-air form with little rill after being uniformly distributed fully contacts with decarbonizing solution from below to up, then overflow and rise from top, solution stacking area, with top-down decarbonizing solution counter current contacting, the carbon dioxide in solution parses that rear transfer enters ascending air and discharges from regenerator 8 tops together with thermal current.After the resolution gas ejecting is once lowered the temperature and realized heat and once reclaim by gas-gas heat exchanger 10, then enter the second gas-liquid cooler 11 and be cooled to below 30 DEG C, then enter the second gas-liquid separator 14 and isolate after the solution of carrying under one's arms emptying.The solution that parses carbon dioxide falls into the solution stacking area of regenerator 8 bottoms, the solution after regeneration by pump 6 from regenerator 8 bottoms extract out pump into absorption tower 4 top sprays and, again participate in biogas decarburization purify absorption process.In regenerator 8 solution stacking areas, be provided with electric heater 7, the heat that adds of electric heater 7 is adjusted by the attemperating unit 15 on regenerator 8 taphole pipes.
The first gas-liquid separator 1 and the second gas-liquid separator 14 are equipped with liquid-level auto-control device, when the liquid level of decarbonizing solution in separator higher than set level value time, the tapping valve 2 of separator bottom can be opened automatically, and the decarbonizing solution of recovery flows into decarbonizing solution storage tank 16.Along with the recovery of decarbonizing solution, when the liquid level of the decarbonizing solution in separator lower than set level value time, tapping valve 2 is closed automatically.When the liquid level in decarbonizing solution storage tank 16 is higher than when setting value, reflux pump 17 starts automatically by PLC control system, and opens pump discharge control valve group 18 and decarbonizing solution is filled into regenerator 8 tops, thereby realizes reuse, and ensures the solution equilibria of absorption system.
Absorption tower, regenerator, solution pipeline, hot-air pipeline, pipe fitting in this embodiment biogas separation equipment are all incubated processing, reduce the heat radiation loss of heat as far as possible, and the heat of heat radiation loss is supplemented by the electric heater 7 of regenerator 8 solution stacking areas, therefore the temperature of decarbonizing solution that circulates in whole system and the temperature of air are all controlled at 80～85 DEG C, thereby realize the decarbonizing solution of isolating carbon dioxide from biogas without the constant temperature absorption of steam regeneration.
Applied specific embodiment herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.The above is only preferred embodiment of the present utility model, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvement, retouching or variation, also above-mentioned technical characterictic can be combined by rights; These improve retouching, change or combination, or without improving, the design of utility model and technical scheme are directly applied to other occasion, all should be considered as protection domain of the present utility model.
Claims (6)
1. the constant temperature absorption equipment of carbon dioxide removal from biogas, is characterized in that:
Comprise absorption tower, regenerator, bottom, described absorption tower connects the blower fan of carrying compressed biogas, bottom, absorption tower connects the top spray device of described regenerator by Liquid level adjusting valve, regenerator bottom is provided with electric heater, and connects the top spray device on absorption tower by pump; Described regenerator top is also connected with decarbonizing solution storage tank by control valve group, reflux pump;
Also comprise air blast, described air blast connects gas-gas heat exchanger and flight electric heater, and flight electric heater is connected to the bottom, solution stacking area of regenerator bottom by gas distributor.
According to claim 1 from biogas the constant temperature absorption equipment of carbon dioxide removal, it is characterized in that: described reflux pump connects a PLC control system.
According to claim 1 from biogas the constant temperature absorption equipment of carbon dioxide removal, it is characterized in that: top, described absorption tower connects the first gas-liquid cooler, the first gas-liquid separator successively, described the first gas-liquid separator is connected to decarbonizing solution storage tank by tapping valve.
According to claim 1 from biogas the constant temperature absorption equipment of carbon dioxide removal, it is characterized in that: described regenerator top connects gas-gas heat exchanger, the second gas-liquid cooler, the second gas-liquid separator successively, and described gas-liquid separator is connected to decarbonizing solution storage tank by tapping valve.
According to claim 1 from biogas the constant temperature absorption equipment of carbon dioxide removal, it is characterized in that: between described gas-gas heat exchanger and air blast, be provided with accurate filter.
According to claim 1 from biogas the constant temperature absorption equipment of carbon dioxide removal, it is characterized in that: described flight electric heater and electric heater are provided with attemperating unit at outlet respectively.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133429.3U CN203777901U (en) | 2014-03-24 | 2014-03-24 | Constant-temperature absorption equipment removing carbon dioxide from biogas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133429.3U CN203777901U (en) | 2014-03-24 | 2014-03-24 | Constant-temperature absorption equipment removing carbon dioxide from biogas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203777901U true CN203777901U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133429.3U Expired - Fee Related CN203777901U (en) | 2014-03-24 | 2014-03-24 | Constant-temperature absorption equipment removing carbon dioxide from biogas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920367A (en) * | 2014-03-24 | 2014-07-16 | 湖南和道资源科技有限公司 | Constant temperature absorption method and equipment capable of removing carbon dioxide from biogas |
-
2014
- 2014-03-24 CN CN201420133429.3U patent/CN203777901U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920367A (en) * | 2014-03-24 | 2014-07-16 | 湖南和道资源科技有限公司 | Constant temperature absorption method and equipment capable of removing carbon dioxide from biogas |
| CN103920367B (en) * | 2014-03-24 | 2016-07-27 | 贺少君 | The constant temperature absorption process of carbon dioxide removal and equipment from biogas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20190324 |