CN205392117U - Absorption heat pump desulfurization process system of can regenerating - Google Patents
Absorption heat pump desulfurization process system of can regenerating Download PDFInfo
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- CN205392117U CN205392117U CN201620174099.1U CN201620174099U CN205392117U CN 205392117 U CN205392117 U CN 205392117U CN 201620174099 U CN201620174099 U CN 201620174099U CN 205392117 U CN205392117 U CN 205392117U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The utility model discloses an absorption heat pump desulfurization process system of can regenerating, it includes the desulfurizing tower, rich solution delivery pump, lean solution cooler, rich or poor liquid heat exchanger, rich solution heater, lean solution delivery pump, SO2 desorber, steam reboiler, absorption heat pump desulfurization process system of can regenerating still includes lithium bromide second class absorption heat pump, the SO2 vapor outlet and the lithium bromide second class absorption heat pump import intercommunication at SO2 desorber top, export of lithium bromide second class absorption heat pump and vapour and liquid separator import intercommunication, vapour and liquid separator export and comdenstion water delivery pump import intercommunication, the export of comdenstion water delivery pump communicates with the comdenstion water import of SO2 desorber. The consumption of this reducible living steam of system and recirculated cooling water's consumption provide and to save the analytic technology of 40% living steam consumption regeneration, and second class absorption heat pump can regard as small -size steam boiler to use, and can show lands reduces former steam boiler specification and operating load, reduces analysis process running cost.
Description
Technical field
This utility model relates to a kind of absorption heat pump regenerating desulfurization process system.Suitable in the desorption step of all regenerating desulfurization systems, relate to face and contain numerous territories that can be suitable for regenerating desulfurization such as power plant, chemical industry, petrochemical industry, metallurgy, cement.
Background technology
Desorption step in conventional wet regenerative sulfur binding system is all adopt raw steam by reboiler heated solution, makes SO at a certain temperature2Detach buffer.Its shortcoming is desorbing SO2Simultaneously need to evaporate substantial amounts of steam, SO when desorbing completes2Only accounting for about the 5% of gaseous mixture, all the other 95% are all steam, and to isolate SO2This water vapor condensation of 95% becomes saturation water (adopting recirculated cooling water cooling) again, and the consumption of whole Process Energy is nearly all in that in the evaporation of steam and the condensation of steam.Owing to consume substantial amounts of raw steam and recirculated cooling water, causing that the operating cost of this technique is high, compare other relatively simple wet desulfurizing process, operation process user needs to bear very big economic pressures.Visible, the shortcoming that the raw steam regeneration desorption technique energy consumption of tradition is big is apparent.Key also resides in not relevant improving equipment and meets the optimization of technique.
Utility model content
This utility model is intended to overcome the deficiencies in the prior art, a kind of absorption heat pump regenerating desulfurization process system is provided, this system can reduce the consumption of 40% raw steam and the consumption of recirculated cooling water, realization can be saved 40% raw steam consumption regeneration and be resolved technique, significantly reduces specification and the operating load of original steam boiler simultaneously.
In order to achieve the above object, the technical scheme that this utility model provides is:
Described absorption heat pump regenerating desulfurization process system, it includes desulfurizing tower, rich solution delivery pump, lean solution cooler, poor rich liquid heat exchanger, rich solution heater, lean solution delivery pump, SO2Desorber, Steam reboiler；Described absorption heat pump regenerating desulfurization process system also includes lithium bromide second-kind absorption-type heat pump；Described SO2The SO at desorber top2Steam outlet and lithium bromide second-kind absorption-type heat pump inlet communication, the outlet of described lithium bromide second-kind absorption-type heat pump and gas-liquid separator inlet communication, the outlet of described gas-liquid separator and condensed water delivery pump inlet communication, the outlet of described condensed water delivery pump and SO2The condensed water inlet communication of desorber.
Wherein, described SO2Desorption barren solution bottom desorber exports and lean solution delivery pump inlet communication；The outlet of described lean solution delivery pump and poor rich liquid heat exchanger the first inlet communication；Described poor rich liquid heat exchanger the first outlet connects with lean solution cooler inlet；Lean solution cooler outlet connects with desulfurizing tower upper inlet；The outlet of absorption liquid and the rich solution delivery pump inlet communication of described desulfurizing tower；The outlet of described rich solution delivery pump and poor rich liquid heat exchanger the second inlet communication；Described poor rich liquid heat exchanger the second outlet connects with rich solution heater inlet；Described rich solution heater outlet and SO2Hot water inlet's connection of desorber；Described SO2Desorber lower part outlet and Steam reboiler inlet communication；The outlet of described Steam reboiler and SO2Desorber lower inlet connects.
Below this utility model mentality of designing and principle are described further:
This utility model operation principle according to second-kind absorption-type heat pump, utilizes the SO solving sucking-off2Mixed vapour is as middle potential temperature thermal source, and one part heat (40% 48%) can heat steam condensate (SC) and produce high temperature saturated vapor (120 140 DEG C), and another part heat (60% 52%) is removed by recirculated cooling water.Because the comparable middle potential temperature heat source temperature of the temperature of output high-temperature position saturated vapor is high 20 40 DEG C, so can be substituted for partly boiling again adding vapours desorbing SO2Rich solution.Therefore, second-kind absorption-type heat pump can use as a small size steam boiler, can significantly reduce specification and the operating load of original steam boiler.
Second-kind absorption-type heat pump is constituted by evaporating, condense, absorb, occur four processes.Utilize absorbent and refrigerant mixed and condensation exothermic process in cycle fluid to realize the output of high-temperature hot, potential temperature heat in a part is transferred in high-temperature position heated medium, reaches the purpose of recovery section heat.
The working medium of second-kind absorption-type heat pump is generally lithium-bromide solution, but also includes ammonia or other type solution of various new multicomponent mixed liquor.
The concrete technical scheme corresponding with above-mentioned basic conception is: the desorber top SO being mixed with about 100 DEG C of indirect steams out2Gas is introduced into the vaporizer one-level heat release of absorption heat pump, then through heat pump generator secondary heat release.The heat obtained at vaporizer passes through to carry out the high-grade steam that secondary heat release needs thermal source to produce 120 DEG C ~ 140 DEG C to high-temperature position in absorber, and the heat obtained in generator is released to recirculated cooling water by condenser secondary and takes away.
So, the middle potential temperature mixed vapour of 100 DEG C becomes the condensed water gaseous mixture (steam is all condensed) at this temperature by second-kind absorption-type heat pump cooling.40% the 48% of condensation heat produce the raw steam of 120 140 DEG C, serve the effect of a small size steam boiler.Although remainder heat needs to remove with recirculated cooling water, but quantity of circulating water decreases 40% 48% simultaneously.
Because be subject to absorption heat transformer intrinsic property restriction, its coefficient of performance in heating (COP) the highest also cannot more than 50%, so, it cannot replace conventional vapor boiler completely.But utilized the fresh raw steam that the heat energy of desorbing mixed vapour nearly 50% obtains high-quality to remain a kind of great energy-conservation supplementary by heat pump, the operating cost of regenerative system desorption step can be significantly decreased.
Below utility model works process is described further:
In this utility model, from SO2Desorber discharge about 100 DEG C containing SO2Steam enters lithium bromide second-kind absorption-type heat pump, carry out after cooling heat release through lithium bromide second-kind absorption-type heat pump inner evaporator and generator, steam becomes condensed water, is finally cooled to about 50 DEG C entrance gas-liquid separators with the SO2 steam water interface formed and carries out gas-liquid separation.The saturated vapor that the saturated condensed water of about 130 DEG C of entrance lithium bromide second-kind absorption-type heat pump is heated at this temperature in lithium bromide second-kind absorption-type heat pump absorbed inside device is available for a part for Steam reboiler and heats whole vapour.The circulating cooling feedwater heat absorption within the condenser entering lithium bromide second-kind absorption-type heat pump enters cooling water return house steward after heating up.The steam condensate (SC) of 50 DEG C of gas-liquid separator outflow delivers to SO by condensed water delivery pump2Desorber supplements the water that desorption process evaporates, to maintain the water balance of system.
Except absorption heat pump energy saver described above, the other parts of system described in the utility model are all identical with conventional regeneration desulphurization system device form.That is, desorber desorption barren solution out is sent to poor rich liquid heat exchanger by lean solution delivery pump, and temperature is reduced to 55 DEG C by 100 DEG C, again through lean solution cooler, enters desulfurizing tower through circulating water cooling to 45 DEG C.Desulfurizing tower is reuptaked SO2It is sent to poor rich liquid heat exchanger heat exchange to 40 DEG C of absorption liquid that solution is saturated by rich solution delivery pump and is warming up to 90 DEG C, be promoted to 100 DEG C then through rich solution heater and enter SO2Desorber.Rich solution heater add the saturated vapor that thermal medium provides for boiler room, water vapour pressure that its temperature and pressure all provides with lithium bromide second-kind absorption-type heat pump, temperature quite (about 130 DEG C, 0.27MPa), raw steam is from boiler room, and condensed water imports steam condensate (SC) house steward.It should be noted that enter Steam reboiler heated solution together with the steam that produces with heat pump of low-pressure steam that boiler produces here, pipeline should arrange the valve workload in term to both and be adjusted.Such flow process eliminates the purchase commodity setting a Steam reboiler more, is one conveniently heat pump energy-conserving technique.
Compared with prior art, the beneficial effects of the utility model are in that:
Absorption heat pump regenerating desulfurization process system described in the utility model can reduce the consumption of raw steam and the consumption of recirculated cooling water, there is provided one can save 40% raw steam consumption regeneration and resolve technique, second-kind absorption-type heat pump can use as a small size steam boiler, specification and the operating load of original steam boiler can be significantly reduced, reduce the operating cost resolving operation.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1 is desulfurizing tower, 2 is rich solution delivery pump, and 3 is lean solution cooler, and 4 is poor rich liquid heat exchanger, and 5 is rich solution heater, and 6 is lean solution delivery pump, and 7 is SO2Desorber, 8 is Steam reboiler, and 9 is lithium bromide second-kind absorption-type heat pump, and 10 is gas-liquid separator, and 11 is condensed water delivery pump.
Detailed description of the invention
Embodiment 1
Referring to Fig. 1, described absorption heat pump regenerating desulfurization process system includes desulfurizing tower 1, rich solution delivery pump 2, lean solution cooler 3, poor rich liquid heat exchanger 4, rich solution heater 5, lean solution delivery pump 6, SO2Desorber 7, Steam reboiler 8；It is characterized in that, described absorption heat pump regenerating desulfurization process system also includes lithium bromide second-kind absorption-type heat pump 9；Described SO2The SO at desorber 7 top2Steam outlet and lithium bromide second-kind absorption-type heat pump 9 inlet communication, the outlet of described lithium bromide second-kind absorption-type heat pump 9 and gas-liquid separator 10 inlet communication, the outlet of described gas-liquid separator 10 and condensed water delivery pump 11 inlet communication, described condensed water delivery pump 11 exports and SO2The condensed water inlet communication of desorber 7.
Wherein, described SO2Desorption barren solution bottom desorber 7 exports and lean solution delivery pump 6 inlet communication；The outlet of described lean solution delivery pump 6 and poor rich liquid heat exchanger 4 first inlet communication；The outlet of described poor rich liquid heat exchanger 4 first and lean solution cooler 3 inlet communication；Lean solution cooler 3 outlet connects with desulfurizing tower 1 upper inlet；The outlet of absorption liquid and rich solution delivery pump 2 inlet communication of described desulfurizing tower 1；The outlet of described rich solution delivery pump 2 and poor rich liquid heat exchanger 4 second inlet communication；The outlet of described poor rich liquid heat exchanger 4 second and rich solution heater 5 inlet communication；Described rich solution heater 5 exports and SO2Hot water inlet's connection of desorber 7；Described SO2Desorber 7 lower part outlet and Steam reboiler 8 inlet communication；Described Steam reboiler 8 exports and SO2Desorber 7 lower inlet connects.
Claims (2)
1. an absorption heat pump regenerating desulfurization process system, it includes desulfurizing tower (1), rich solution delivery pump (2), lean solution cooler (3), poor rich liquid heat exchanger (4), rich solution heater (5), lean solution delivery pump (6), SO2Desorber (7), Steam reboiler (8)；It is characterized in that, described absorption heat pump regenerating desulfurization process system also includes lithium bromide second-kind absorption-type heat pump (9)；Described SO2The SO at desorber (7) top2Steam outlet and lithium bromide second-kind absorption-type heat pump (9) inlet communication, the outlet of described lithium bromide second-kind absorption-type heat pump (9) and gas-liquid separator (10) inlet communication, described gas-liquid separator (10) outlet and condensed water delivery pump (11) inlet communication, the outlet of described condensed water delivery pump (11) and SO2The condensed water inlet communication of desorber (7).
2. absorption heat pump regenerating desulfurization process system as claimed in claim 1, it is characterised in that described SO2Desorption barren solution outlet and lean solution delivery pump (6) inlet communication of desorber (7) bottom；The outlet of described lean solution delivery pump (6) and poor rich liquid heat exchanger (4) first inlet communication；The outlet of described poor rich liquid heat exchanger (4) first and lean solution cooler (3) inlet communication；Lean solution cooler (3) outlet connects with desulfurizing tower (1) upper inlet；The outlet of absorption liquid and rich solution delivery pump (2) inlet communication of described desulfurizing tower (1)；The outlet of described rich solution delivery pump (2) and poor rich liquid heat exchanger (4) second inlet communication；The outlet of described poor rich liquid heat exchanger (4) second and rich solution heater (5) inlet communication；The outlet of described rich solution heater (5) and SO2Hot water inlet's connection of desorber (7)；Described SO2Desorber (7) lower part outlet and Steam reboiler (8) inlet communication；Described Steam reboiler (8) outlet and SO2Desorber (7) lower inlet connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620174099.1U CN205392117U (en) | 2016-03-08 | 2016-03-08 | Absorption heat pump desulfurization process system of can regenerating |
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| CN201620174099.1U CN205392117U (en) | 2016-03-08 | 2016-03-08 | Absorption heat pump desulfurization process system of can regenerating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701402A (en) * | 2020-06-24 | 2020-09-25 | 中国石油大学(华东) | System and process for recovering waste heat at top of carbon dioxide capturing and regenerating tower |
| CN114272735A (en) * | 2021-12-27 | 2022-04-05 | 北京华源泰盟节能设备有限公司 | Flue gas waste heat utilization and carbon capture integrated system |
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2016
- 2016-03-08 CN CN201620174099.1U patent/CN205392117U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701402A (en) * | 2020-06-24 | 2020-09-25 | 中国石油大学(华东) | System and process for recovering waste heat at top of carbon dioxide capturing and regenerating tower |
| CN114272735A (en) * | 2021-12-27 | 2022-04-05 | 北京华源泰盟节能设备有限公司 | Flue gas waste heat utilization and carbon capture integrated system |
| CN114272735B (en) * | 2021-12-27 | 2022-11-25 | 北京华源泰盟节能设备有限公司 | Flue gas waste heat utilization and carbon capture integrated system |
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