CN204672102U - A kind of regenerating unit of collecting carbonic anhydride - Google Patents
A kind of regenerating unit of collecting carbonic anhydride Download PDFInfo
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- CN204672102U CN204672102U CN201520241427.0U CN201520241427U CN204672102U CN 204672102 U CN204672102 U CN 204672102U CN 201520241427 U CN201520241427 U CN 201520241427U CN 204672102 U CN204672102 U CN 204672102U
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Abstract
A regenerating unit for collecting carbonic anhydride, absorption tower is communicated with poor rich liquid heat exchanger, and poor rich liquid heat exchanger is communicated with rich solution reheater, rich solution reheater and CO
2the top of pre-stripper is communicated with, CO
2the rich solution outlet of pre-stripper and being communicated with of regenerator, the outlet of regenerator rich solution is communicated with rich solution intermediate heater, and rich solution intermediate heater is communicated with in the middle part of regenerator, and regenerator is communicated with rich solution intermediate heater lean solution entrance, regenerator and CO
2pre-stripper bottom is communicated with, and rich solution intermediate heater is communicated with the entrance of poor rich liquid heat exchanger, and poor rich liquid heat exchanger is communicated with the top on absorption tower, and rich solution is from CO
2the top of pre-stripper enters, CO
2regeneration gas enters from bottom, and the two counter current contacting, directly makes full use of CO
2the waste heat of regeneration gas heats rich solution, stripping, and rich solution carries out flash distillation simultaneously, and utilizes the lean solution of discharging bottom regenerator to carry out centre heating to the rich solution that middle part is discharged, thus reaches the object reducing steam consumption, reduces the operating cost of system.
Description
Technical field
The utility model belongs to flue gases purification field, is particularly useful for low concentration CO in the flue gas of the generations such as coal-burning boiler, gas turbine and Industrial Stoves
2trapping, particularly a kind of regenerating unit of collecting carbonic anhydride.
Background technology
In order to reduce CO
2isothermal chamber gas discharging with the day by day serious climate warming crisis of reply, except energy-saving and cost-reducing and use except regenerative resource, CO in existing emission source
2trapping seem particularly important.
, CO large for flow
2cO in concentration low (general≤20%) flue gas
2trapping, comparatively applicable based on the chemical absorption method technique of alkaline alcohol amine-based absorption solvent, but this technology is in actual moving process, because the regeneration of carbon dioxide in solution needs to consume a large amount of steam, cause system energy consumption large, reason is, for existing collecting carbonic anhydride technology, CO
2regenerator top CO out
2regeneration gas and bottom lean solution out, its waste heat carried is effectively utilized; Meanwhile, in prior art, steam is through heat exchanger to solution for once heat release, and Btu utilization is insufficient, is also one of reason that system energy consumption is higher.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is the regenerating unit providing a kind of collecting carbonic anhydride, be applicable to the trapping of low fractional pressure carbon dioxide in chemical industry, power industry generation flue gas, optimize the chemical absorption method technique of the collecting carbonic anhydride used at present, there is the features such as steam heat utilizes fully, energy ezpenditure is low.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of regenerating unit of collecting carbonic anhydride, comprise absorption tower 1, absorption tower 1 rich bottoms liquid outlet is communicated with the rich solution entrance of poor rich liquid heat exchanger 2, and the rich solution outlet of poor rich liquid heat exchanger 2 is communicated with the rich solution entrance of rich solution reheater 3, the rich solution outlet of rich solution reheater 3 and CO
2the upper entrance of pre-stripper 4 is communicated with, CO
2the rich bottoms liquid outlet of pre-stripper 4 is communicated with the upper entrance of regenerator 6, the middle rich solution outlet of regenerator 6 is communicated with the rich solution entrance of rich solution intermediate heater 5, the rich solution outlet of rich solution intermediate heater 5 is communicated with the middle part of regenerator 6, the bottom lean solution outlet of regenerator 6 is communicated with the lean solution entrance of rich solution intermediate heater 5, the lean solution outlet of rich solution intermediate heater 5 is communicated with the lean solution entrance of poor rich liquid heat exchanger 2, and the lean solution outlet of poor rich liquid heat exchanger 2 is communicated with the upper entrance on absorption tower 1;
The top exit of described regenerator 6 and CO
2the lower entrances of pre-stripper 4 is communicated with, CO
2pre-stripper 4 top CO out
2regeneration gas is communicated with follow-up workshop section;
Reboiler 7 is provided with bottom described regenerator 6, low-pressure steam from pipe network is communicated with the steam inlet of reboiler 7, the outlet of reboiler 7 is communicated with the steam cooling vapour/liquid entrance of rich solution reheater 3, and the steam cooling liquid outlet pipeline of rich solution reheater 3 is communicated with follow-up hydrophobic workshop section of collecting.
Compared with prior art, the utility model is by arranging CO
2pre-stripper 4, rich solution is from CO
2the top of pre-stripper enters, CO
2regeneration gas enters from bottom, and the two counter current contacting, directly makes full use of CO
2the waste heat of regeneration gas heats rich solution, stripping, rich solution carries out flash distillation simultaneously, thus reduce regeneration load as much as possible, and rich solution intermediate heater is set, utilize the lean solution of discharging bottom regenerator to carry out centre heating to middle part rich solution out, reclaim lean solution heat at relatively high temperatures, then more thorough by what arrange that rich solution reheater makes steam heat utilize, finally realize the reduction of the required steam hear rate of rich solution regeneration, thus reach the object reducing system operation cost.
Accompanying drawing explanation
Accompanying drawing is the utility model system architecture schematic diagram.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with drawings and Examples.
With reference to accompanying drawing, a kind of regenerating unit of collecting carbonic anhydride, comprise absorption tower 1, absorption tower 1 rich bottoms liquid outlet is communicated with the rich solution entrance of poor rich liquid heat exchanger 2, the rich solution outlet of poor rich liquid heat exchanger 2 is communicated with the rich solution entrance of rich solution reheater 3, it is characterized in that, the rich solution outlet of rich solution reheater 3 and CO
2the upper entrance of pre-stripper 4 is communicated with, CO
2the rich bottoms liquid outlet of pre-stripper 4 is communicated with the upper entrance of regenerator 6, the middle rich solution outlet of regenerator 6 is communicated with the rich solution entrance of rich solution intermediate heater 5, the rich solution outlet of rich solution intermediate heater 5 is communicated with the middle part of regenerator 6, the bottom lean solution outlet of regenerator 6 is communicated with the lean solution entrance of rich solution intermediate heater 5, the lean solution outlet of rich solution intermediate heater 5 is communicated with the lean solution entrance of poor rich liquid heat exchanger 2, and the lean solution outlet of poor rich liquid heat exchanger 2 is communicated with the upper entrance on absorption tower 1;
The top exit of described regenerator 6 and CO
2the lower entrances of pre-stripper 4 is communicated with, CO
2pre-stripper 4 top CO out
2regeneration gas is communicated with follow-up workshop section;
Reboiler 7 is provided with bottom described regenerator 6, low-pressure steam from pipe network is communicated with the steam inlet of reboiler 7, the outlet of reboiler 7 is communicated with the steam cooling vapour/liquid entrance of rich solution reheater 3, and the steam cooling liquid outlet pipeline of rich solution reheater 3 is communicated with follow-up hydrophobic workshop section of collecting.
Operation principle of the present utility model is: bottom absorption tower 1, first rich solution out enters poor rich liquid heat exchanger 2 to reclaim the after-heat of lean solution, enter rich solution reheater 3 again from poor rich liquid heat exchanger 2 rich solution out to heat up, rich solution reheater 3 rich solution is out subsequently from CO
2the top of pre-stripper 4 enters the CO entered with bottom
2regeneration gas counter current contacting, heat absorption, stripping flash section CO simultaneously
2after, by CO
2the bottom of pre-stripper 4 out enters from the top of regenerator 6, in the middle part of regenerator 6, rich solution out enters after rich solution intermediate heater 5 slightly heats up and returns from the middle part of regenerator 6, enter poor rich liquid heat exchanger 2 after lean solution out enters rich solution intermediate heater 5 release portion heat bottom regenerator 6 and again discharge after-heat, poor rich liquid heat exchanger 2 lean solution out enters from the top on absorption tower 1, and formation circulates.
Regenerator 6 top CO out
2regeneration gas is from CO
2the bottom of pre-stripper 4 enters, then with the partial CO 2 of rich solution desorb together from CO
2pre-stripper 4 top is discharged and is entered the process of follow-up workshop section.
Be provided with reboiler 7 bottom regenerator 6, the low-pressure steam from pipe network enters reboiler 7, and reboiler 7 steam cooling vapour/liquid out enters the steam condensate formed after rich solution reheater 3 discharges waste heat again, enters follow-up hydrophobic collection workshop section subsequently and reclaims.
Claims (1)
1. the regenerating unit of a collecting carbonic anhydride, comprise absorption tower (1), the outlet of absorption tower (1) rich bottoms liquid is communicated with the rich solution entrance of poor rich liquid heat exchanger (2), the rich solution outlet of poor rich liquid heat exchanger (2) is communicated with the rich solution entrance of rich solution reheater (3), it is characterized in that, the rich solution outlet of rich solution reheater (3) and CO
2the upper entrance of pre-stripper (4) is communicated with, CO
2the rich bottoms liquid outlet of pre-stripper (4) is communicated with the upper entrance of regenerator (6), the middle rich solution outlet of regenerator (6) is communicated with the rich solution entrance of rich solution intermediate heater (5), the rich solution outlet of rich solution intermediate heater (5) is communicated with the middle part of regenerator (6), the bottom lean solution outlet of regenerator (6) is communicated with the lean solution entrance of rich solution intermediate heater (5), the lean solution outlet of rich solution intermediate heater (5) is communicated with the lean solution entrance of poor rich liquid heat exchanger (2), the lean solution outlet of poor rich liquid heat exchanger (2) is communicated with the upper entrance of absorption tower (1),
The top exit of described regenerator (6) and CO
2the lower entrances of pre-stripper (4) is communicated with, CO
2pre-stripper (4) top CO out
2regeneration gas is communicated with follow-up workshop section;
Described regenerator (6) bottom is provided with reboiler (7), low-pressure steam from pipe network is communicated with the steam inlet of reboiler (7), the outlet of reboiler (7) is communicated with the steam cooling vapour/liquid entrance of rich solution reheater (3), and the steam cooling liquid outlet pipeline of rich solution reheater (3) is communicated with follow-up hydrophobic workshop section of collecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241427.0U CN204672102U (en) | 2015-04-21 | 2015-04-21 | A kind of regenerating unit of collecting carbonic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520241427.0U CN204672102U (en) | 2015-04-21 | 2015-04-21 | A kind of regenerating unit of collecting carbonic anhydride |
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| Publication Number | Publication Date |
|---|---|
| CN204672102U true CN204672102U (en) | 2015-09-30 |
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| CN201520241427.0U Active CN204672102U (en) | 2015-04-21 | 2015-04-21 | A kind of regenerating unit of collecting carbonic anhydride |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815529A (en) * | 2015-04-21 | 2015-08-05 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide capture regeneration system |
| CN114788992A (en) * | 2022-03-09 | 2022-07-26 | 国家电投集团远达环保股份有限公司 | Carbon capture system and power plant boiler steam turbine system coupled with carbon capture system |
-
2015
- 2015-04-21 CN CN201520241427.0U patent/CN204672102U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815529A (en) * | 2015-04-21 | 2015-08-05 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide capture regeneration system |
| CN114788992A (en) * | 2022-03-09 | 2022-07-26 | 国家电投集团远达环保股份有限公司 | Carbon capture system and power plant boiler steam turbine system coupled with carbon capture system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |