CN204952598U - Retrieve regenerating unit of carbon dioxide regeneration gas waste heat - Google Patents
Retrieve regenerating unit of carbon dioxide regeneration gas waste heat Download PDFInfo
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- CN204952598U CN204952598U CN201520484849.0U CN201520484849U CN204952598U CN 204952598 U CN204952598 U CN 204952598U CN 201520484849 U CN201520484849 U CN 201520484849U CN 204952598 U CN204952598 U CN 204952598U
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- reboiler
- regeneration gas
- carbon dioxide
- waste heat
- regenerating unit
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Abstract
The utility model provides a retrieve regenerating unit of carbon dioxide regeneration gas waste heat, the first reboiler of regenerator column intercommunication, second reboiler entry, the second reboiler is linked together with the compressor, the compressor is linked together with the regenerator column top, the export of second reboiler shell side upper end is connected with the hot side entrance of pre -heater of flowing back, the export of backward flow pre -heater heat side is connected with the cooler, the cooler is connected with vapour and liquid separator, vapour and liquid separator is connected with the cold side entry of backward flow pre -heater, the cold side export and the backward flow fluid infusion pump intake of backward flow pre -heater switch on mutually, the mouth is pumped in the backward flow fluid infusion and the regenerator column switches on mutually, regeneration gas the heating after the pressure boost through the compressor that the desorption was come out, with the solution heat transfer in the second reboiler, provide solution regeneration with heat, the phegma heat transfer of later isolating in backward flow pre -heater and vapour and liquid separator again, improve the temperature of the phegma of entering regenerator column, can reduce the thermal loss in the regenerator column, the regeneration gas is through the two -stage heat transfer, waste heat that can the make full use of regeneration gas, reduce the system synthesis energy consumption.
Description
Technical field
The utility model relates to smoke carbon dioxide capture technical field, is specifically related to a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat.
Background technology
More and more pay attention to along with Environmental is administered, carbon emission is also more and more paid close attention to, starts the research work promoting carbon trapping technique.In the existing power station of China or based on thermal power generation, so exploitation is applicable to thermal power station's collecting carbonic anhydride technology, minimizing carbon emission is played an important role.In chemical absorption method, utilize alkanolamine solution from flue gas, carry out the technology of collecting carbonic anhydride ripe in chemical industry.But this Technology application problem maximum in power station is that energy consumption is high, and steam consumption is large.So will consumption be reduced, raise the efficiency, need the system of development of new and subsystem to improve the applicability of this technology.
Experimental study finds, traditional collecting carbonic anhydride technology, solution can consume a large amount of steam in regenerative process, causes system energy consumption large.Due to temperature and the pressure requirements of regenerative process, cause containing a large amount of water vapours in the regeneration gas after regeneration, and in order to obtain highly purified carbon dioxide in technical process, need to cool regeneration gas, realize gas-liquid separation by after water vapour condensation, cause a large amount of heat loss.Experiment shows, the cooling load in smoke carbon dioxide capture process has about 60% to consume in regeneration gas cooling procedure.For the present situation that the heat of transformation of water vapour in regeneration gas cooling procedure is not utilized effectively, technology is needed to supplement it.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat, this regenerative system can be used in the desorption system of chemical absorption method decarburization or desulfurization, there is the feature of the waste heat making full use of regeneration gas, reduce the regeneration energy consumption of unit carbon dioxide trapping.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat, comprise the regenerator 1 be connected with absorption tower, regenerator 1 left lower is communicated with the first reboiler 2, regenerator 1 lower right side is communicated with the second reboiler 3 entrance, the lower inlet of the second reboiler 3 shell side exports with compressor 4 and is connected, compressor 4 entrance is connected with regenerator 1 top, second reboiler 3 shell side upper end outlet is connected with the hot side entrance of backflow preheat device 7, the hot side outlet of backflow preheat device 7 is connected with cooler 8 entrance, cooler 8 outlet is connected with gas-liquid separator 5 entrance, gas-liquid separator 5 outlet at bottom is connected with the cold side input port of backflow preheat device 7, the cold side outlet port of backflow preheat device 7 is conducted with backflow fluid infusion pump 6 entrance, backflow fluid infusion pump 6 exports and regenerator 1 one upper lateral part is conducted.
Described regenerator 1 is filler or plate tower.
Described first reboiler 2 is vertical or horizontal thermosiphon reboiler.
Described first reboiler 2 provides thermal source by external steam.
Described second reboiler 3 is vertical or horizontal thermosiphon reboiler.
Described compressor 4 is pump or the turbine that can realize gas compression.
Described gas-liquid separator 5 is the container that can realize gas-liquid separation.
Described backflow fluid infusion pump 6 is the pump that can realize supercharging.
Described backflow preheat device 7 is board-like or shell-and-tube heat exchanger.
Described cooler 8 is board-like or shell-and-tube heat exchanger.
Compared with prior art, the utility model has the following advantages:
1, owing to being provided with the compressor 4 be connected with regenerator 1 at regenerator 1 top, effect due to compressor 4 makes the regeneration gas desorbed reach the effect of pressure build up, the pressure in regenerator 1 can be made to reduce simultaneously, reduce and the principle of reduction with pressure according to gas boiling point, by reducing solution pressure, be reduced in identical temperature carbon dioxide gas solubility in the solution, improve the desorption efficiency of carbon dioxide and the regeneration degree of solution;
2, the regeneration gas (carbon dioxide containing gas and water vapour) desorbed through compressor 4 heat supercharging after, in the second reboiler 3 neutralization solution heat exchange, regeneration of waste liquor heat is provided, the phegma heat exchange of separating in backflow preheat device 7 with gas-liquid separator 5 more afterwards, improve the temperature entering the phegma of regenerator 1, can reduce the loss of the heat in regenerator 1, regeneration gas is through two-stage heat exchange, the waste heat of regeneration gas can be made full use of, reduce system synthesis energy consumption;
Accompanying drawing explanation
Accompanying drawing is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in drawings, a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat, comprise the filler or plate tower regenerator 1 that are connected with absorption tower, regenerator 1 left lower is communicated with the first reboiler 2 that is vertical or horizontal thermal siphon, first reboiler 2 provides thermal source by external steam, second reboiler 3 of the vertical or horizontal thermal siphon that regenerator 1 lower right side is connected, second reboiler 3 is by heating the regeneration gas after supercharging and solution heat exchange through compressor 4 to provide heat, compressor 4 is pump or the turbine that can realize gas compression, entrance is connected with regenerator 1 top, outlet is connected with the second reboiler 3 shell side lower inlet, regeneration gas after heat exchange from the second reboiler 3 shell side upper end outlet out, enter the phegma heat exchange again of separating in backflow preheat device 7 and gas-liquid separator 5, realize the effective recycling of regeneration gas waste heat, gas-liquid separator 5 is the container that can realize gas-liquid separation, after subcooler 8 cools, the separation that gas-liquid separator 5 realizes gas-liquid is entered from backflow preheat device 7 regeneration gas out, bottom and backflow preheat device 7 cold side input port of gas-liquid separator 5 are conducted, absorb the phegma after heat and enter regenerator 1 from side, regenerator 1 top after the supercharging of backflow fluid infusion pump 6.
Operation principle of the present utility model is: from the solution after absorption tower trapping absorbing carbon dioxide, enter in regenerator 1 by regenerator 1 top, and spray downwards, in regenerator 1 bottom, part solution enters after the first reboiler 2 absorbs heat (thermal source is external steam) and returns in regenerator 1, another part solution enters after the second reboiler 3 absorbs heat (regeneration gas provides heat) and returns regenerator 1, regeneration gas by regenerator 1 top out, and heat supercharging through compressor 4, enter the second reboiler 3 and carry out a heat exchange with solution, compressor 4 can maintain higher temperature and certain regeneration pressure in regenerator 1, enter from the second reboiler 3 regeneration gas out the phegma separated backflow preheat device 7 and gas-liquid separator 5 and carry out secondary heat exchange, after heat exchange, regeneration gas cools via cooler 8, separate in gas-liquid separator 5, finally release from gas-liquid separator 5 top, absorb the phegma after heat and enter regenerator 1 from top after the supercharging of backflow fluid infusion pump 6.The solution regenerating after carbon dioxide leaves bottom regenerator 1, goes to absorption tower to continue trapping absorbing carbon dioxide.
Claims (9)
1. one kind is reclaimed the regenerating unit of carbon dioxide regeneration gas waste heat, comprise the regenerator (1) be connected with absorption tower, regenerator (1) left lower is communicated with the first reboiler (2), it is characterized in that, regenerator (1) lower right side is communicated with the second reboiler (3) entrance, the lower inlet of the second reboiler (3) shell side exports with compressor (4) and is connected, compressor (4) entrance is connected with regenerator (1) top, second reboiler (3) shell side upper end outlet is connected with backflow preheat device (7) hot side entrance, backflow preheat device (7) hot side outlet is connected with cooler (8) entrance, cooler (8) outlet is connected with gas-liquid separator (5) entrance, gas-liquid separator (5) outlet at bottom is connected with the cold side input port of backflow preheat device (7), the cold side outlet port of backflow preheat device (7) is conducted with backflow fluid infusion pump (6) entrance, backflow fluid infusion pump (6) outlet and regenerator (1) upper lateral part are conducted.
2. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described regenerator (1) is filler or plate tower.
3. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described first reboiler (2) is vertical or horizontal thermosiphon reboiler.
4. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described second reboiler (3) is vertical or horizontal thermosiphon reboiler.
5. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described compressor (4) is pump or the turbine that can realize gas compression.
6. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described gas-liquid separator (5) is the container that can realize gas-liquid separation.
7. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described backflow fluid infusion pump (6) is the pump that can realize supercharging.
8. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described backflow preheat device (7) is board-like or shell-and-tube heat exchanger.
9. a kind of regenerating unit reclaiming carbon dioxide regeneration gas waste heat according to claim 1, is characterized in that: described cooler (8) is board-like or shell-and-tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484849.0U CN204952598U (en) | 2015-07-07 | 2015-07-07 | Retrieve regenerating unit of carbon dioxide regeneration gas waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484849.0U CN204952598U (en) | 2015-07-07 | 2015-07-07 | Retrieve regenerating unit of carbon dioxide regeneration gas waste heat |
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| Publication Number | Publication Date |
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| CN204952598U true CN204952598U (en) | 2016-01-13 |
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| CN201520484849.0U Active CN204952598U (en) | 2015-07-07 | 2015-07-07 | Retrieve regenerating unit of carbon dioxide regeneration gas waste heat |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941393A (en) * | 2015-07-07 | 2015-09-30 | 中国华能集团清洁能源技术研究院有限公司 | Regeneration system for recovering waste heat of carbon dioxide regenerated gas |
| CN108211671A (en) * | 2018-03-15 | 2018-06-29 | 中国华能集团清洁能源技术研究院有限公司 | A kind of energy-saving carbon dioxide regeneration and compressibility and method |
-
2015
- 2015-07-07 CN CN201520484849.0U patent/CN204952598U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941393A (en) * | 2015-07-07 | 2015-09-30 | 中国华能集团清洁能源技术研究院有限公司 | Regeneration system for recovering waste heat of carbon dioxide regenerated gas |
| CN108211671A (en) * | 2018-03-15 | 2018-06-29 | 中国华能集团清洁能源技术研究院有限公司 | A kind of energy-saving carbon dioxide regeneration and compressibility and method |
| CN108211671B (en) * | 2018-03-15 | 2023-07-11 | 中国华能集团清洁能源技术研究院有限公司 | Energy-saving carbon dioxide regeneration and compression system and method |
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