CN111744333A - Self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery - Google Patents
Self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery Download PDFInfo
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- CN111744333A CN111744333A CN202010679103.0A CN202010679103A CN111744333A CN 111744333 A CN111744333 A CN 111744333A CN 202010679103 A CN202010679103 A CN 202010679103A CN 111744333 A CN111744333 A CN 111744333A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The invention discloses a high-temperature flue gas desulfurization, dust removal and waste heat recovery self-balancing system, which comprises: the system comprises an absorption tower, a primary spray, a first heat exchanger and a first circulation loop, wherein the solution in the first circulation loop exchanges heat with heating water in the first heat exchanger; the second circulation loop is connected out of the second solution outlet and connected into the second circulation loop, and the solution in the second circulation loop exchanges heat with cooling water in the second heat exchanger. The invention is suitable for integration of desulfurization, dust removal and waste heat recovery of high-temperature flue gas, can realize desulfurization, dust removal purification and waste heat recovery of hot and wet flue gas, has single and multiple purposes, adopts a solution spraying method and a double-layer heat exchange system, maintains the concentration and the liquid level of circulating liquid in a balanced state, solves the requirement of water supplement required by conventional desulfurization, and realizes the synergistic treatment effect of waste heat recovery and desulfurization and dust removal.
Description
Technical Field
The invention relates to a self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery.
Background
Present coal fired boiler afterbody flue gas, relevant desulfurization has mostly been carried out, remove dust and waste heat recovery transformation, but along with the promotion of environmental protection index, current emission flue gas sulphide and dust content can't reach the emission requirement, consider that current flue gas contains sulphur content and dust content and has already passed preliminary desorption and administer, increase sweetener again, or dust collecting equipment, can greatly increased enterprise economic pressure, and the slurry cooling technique that produces in due course, lead to the desulfurizing tower water balance unbalance, lead to the unable normal clear of desulfurization process when serious.
Disclosure of Invention
The invention aims to overcome the defects of difficulty in cooperative treatment of desulfurization water balance control, waste heat utilization, desulfurization and dust removal in the prior art, and provides a self-balancing system for desulfurization, dust removal and waste heat recovery of high-temperature flue gas.
The invention solves the technical problems through the following technical scheme:
the utility model provides a high temperature flue gas desulfurization is removed dust and waste heat recovery self-balancing system which characterized in that, high temperature flue gas desulfurization is removed dust and waste heat recovery self-balancing system includes:
the absorption tower is provided with a flue gas inlet, a flue gas outlet, a first solution outlet and a second solution outlet;
the system comprises a primary spray, a first heat exchanger and a first circulation loop, wherein the first circulation loop is connected out of a first solution outlet and connected into the primary spray, and the solution in the first circulation loop exchanges heat with heating water in the first heat exchanger;
the second circulation loop is connected out of the second solution outlet and connected into the second circulation loop, and the solution in the second circulation loop exchanges heat with cooling water in the second heat exchanger.
The medium of the solutions of the first circulation loop and the second circulation loop can be potassium chloride, glycol, sodium acetate and the like, and the mass concentration is 10-40%.
The self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery adopts a solution and flue gas direct spraying contact method, and through two independent circulations, a first circulation loop adopts heating water or demineralized water process water (cold source materials needing heating) to exchange heat with the solution through a first heat exchanger, so that waste heat recovery and utilization are realized, and a small amount of sulfide and dust particles in the flue gas are removed simultaneously. And the second circulation loop adopts independent cooling circulating water to exchange heat with the solution through a second heat exchanger.
Through the heat exchange of the first heat exchanger and the second heat exchanger, the waste heat of the flue gas is utilized, and sulfide and dust particles in the flue gas are purified. The liquid level of the circulating solution is effectively controlled, and the water balance and the heat balance of the whole system are automatically controlled.
The invention is suitable for integration of desulfurization, dust removal and waste heat recovery of high-temperature flue gas, can realize desulfurization, dust removal purification and waste heat recovery of hot and wet flue gas, has single and multiple purposes, adopts a solution spraying method and a double-layer heat exchange system, maintains the concentration and the liquid level of circulating liquid in a balanced state, solves the requirement of water supplement required by conventional desulfurization, and realizes the synergistic treatment effect of waste heat recovery and desulfurization and dust removal.
Preferably, the first solution outlet is a bottom discharge outlet of the absorption tower, the first solution outlet is an overflow outlet of the absorption tower, and the second solution outlet is higher than the first solution outlet. Therefore, the liquid level difference of the inlet of the two liquid level sensors realizes the micro-difference of two circulating concentrations, and can play a role in micro-adjusting the concentration of the solution in the system, thereby controlling the vapor pressure of the solution and further controlling the liquid level balance of the solution in the whole system.
Preferably, the first circulation loop further comprises a first solution tank and a first circulation pump, and the solution flowing out of the first solution outlet is connected to the first solution tank.
Preferably, the first solution tank is further connected with a solution treatment device, and the solution treatment device is used for removing dust particles and sulfides. The solution treatment device may be one or a combination of more of conventional rotational flow, filter pressing, filtration, precipitation treatment, and the like. The solution treatment unit is used to purify the removed dust particles, and the sulfides (in the form of sulfates or sulfites) produced by the system.
Preferably, the first solution tank is further connected to a solution feed inlet, and the solution feed inlet is used for feeding a solution. The solution feed supplement inlet can be used for regularly and quantitatively adjusting the concentration and the pH value of the solution, and the stable and efficient operation of the system is met.
Preferably, the second circulation loop further comprises a second solution tank and a second circulation pump, and the solution flowing out of the second solution outlet is connected to the second solution tank.
Preferably, the absorption tower is further provided with a filler and a demister, and flue gas enters from the flue gas inlet, sequentially passes through the filler, the primary spraying, the secondary spraying and the demister, and is discharged from the flue gas outlet.
Preferably, a fan is arranged at the flue gas inlet, wherein the fan is used for drawing flue gas into the absorption tower.
Preferably, the first heat exchanger and the second heat exchanger are plate heat exchangers or shell-and-tube heat exchangers.
Preferably, the cooling water is a separate circulation loop and is connected to a cooling tower or a cooling device. The temperature and the flow of the cooling circulating water can be adjusted and controlled by controlling the cooling device and controlling the frequency conversion of the second circulating pump.
The positive progress effects of the invention are as follows: the invention is suitable for integration of desulfurization, dust removal and waste heat recovery of high-temperature flue gas, can realize desulfurization, dust removal purification and waste heat recovery of hot and wet flue gas, has single and multiple purposes, adopts a solution spraying method and a double-layer heat exchange system, maintains the concentration and the liquid level of circulating liquid in a balanced state, solves the requirement of water supplement required by conventional desulfurization, and realizes the synergistic treatment effect of waste heat recovery and desulfurization and dust removal.
Drawings
Fig. 1 is a schematic diagram of a self-balancing system for desulfurization, dust removal and waste heat recovery of high-temperature flue gas according to a preferred embodiment of the invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1, the present embodiment discloses a self-balancing system for desulfurization, dust removal and waste heat recovery of high temperature flue gas, which includes an absorption tower 3, wherein the absorption tower 3 has a flue gas inlet 61 and a flue gas outlet 62, and further has a first solution outlet and a second solution outlet.
The high-temperature flue gas desulfurization, dust removal and waste heat recovery self-balancing system further comprises a first-stage spray 31, a first heat exchanger 4 and a first circulation loop, wherein the first circulation loop is connected out from a first solution outlet and connected into the first-stage spray 31, and solution in the first circulation loop exchanges heat with heating water in the first heat exchanger 4.
The high-temperature flue gas desulfurization, dust removal and waste heat recovery self-balancing system further comprises a secondary spray 32, a second heat exchanger 5 and a second circulation loop, wherein the second circulation loop is connected out from a second solution outlet and is connected into the secondary spray 32, and solution in the second circulation loop exchanges heat with cooling water in the second heat exchanger 5.
The medium of the solutions of the first circulation loop and the second circulation loop can be potassium chloride, glycol, sodium acetate and the like, and the mass concentration is 10-40%.
The self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery adopts a solution and flue gas direct spraying contact method, and through two independent circulations, a first circulation loop adopts heating water or demineralized water process water (cold source materials needing heating) to exchange heat with the solution through a first heat exchanger 4, so that waste heat recovery is realized, and a small amount of sulfides and dust particles in the flue gas are removed simultaneously. The second circulation loop adopts independent cooling circulating water to exchange heat with the solution through a second heat exchanger 5.
Through the heat exchange of the first heat exchanger 4 and the second heat exchanger 5, the waste heat of the flue gas is utilized, and sulfide and dust particles in the flue gas are purified. The liquid level of the circulating solution is effectively controlled, and the water balance and the heat balance of the whole system are automatically controlled.
The invention is suitable for integration of desulfurization, dust removal and waste heat recovery of high-temperature flue gas, can realize desulfurization, dust removal purification and waste heat recovery of hot and wet flue gas, has single and multiple purposes, adopts a solution spraying method and a double-layer heat exchange system, maintains the concentration and the liquid level of circulating liquid in a balanced state, solves the requirement of water supplement required by conventional desulfurization, and realizes the synergistic treatment effect of waste heat recovery and desulfurization and dust removal.
As shown in fig. 1, the heating water circuit includes a heating water inlet 41 and a heating water outlet 42, and the cooling water circuit includes a cooling water inlet 51 and a cooling water outlet 52.
As shown in fig. 1, the first solution outlet is a bottom discharge port of the absorption tower 3, the first solution outlet is an overflow port of the absorption tower 3, and the second solution outlet is higher than the first solution outlet. Therefore, the liquid level difference of the inlet of the two liquid level sensors realizes the micro-difference of two circulating concentrations, and can play a role in micro-adjusting the concentration of the solution in the system, thereby controlling the vapor pressure of the solution and further controlling the liquid level balance of the solution in the whole system.
As shown in fig. 1, the first circulation loop further includes a first solution tank 11 and a first circulation pump 10, and the solution flowing out of the first solution outlet is connected to the first solution tank 11. The first solution tank 11 is also connected with a solution treatment device 12, and the solution treatment device 12 is used for removing dust particles and sulfides. The solution treatment device 12 may be one or a combination of more of conventional rotational flow, pressure filtration, precipitation treatments, and the like. The solution treatment unit 12 is used to purify the removed dust particles, and the sulfides (in the form of sulfates or sulfites) produced by the system.
As shown in FIG. 1, the first solution tank 11 is further connected to a solution feeding inlet 13, and the solution feeding inlet 13 is used for feeding solution. The solution feed inlet 13 can be used for regularly and quantitatively adjusting the concentration and the pH value of the solution, so that the stable and efficient operation of the system is met.
As shown in fig. 1, the second circulation circuit further includes a second solution tank 21 and a second circulation pump 20, and the solution flowing out of the second solution outlet is connected to the second solution tank 21.
As shown in fig. 1, a packing 33 and a demister 34 are further disposed in the absorption tower 3, and flue gas enters from a flue gas inlet 61, sequentially passes through the packing 33, the primary spray 31, the secondary spray 32 and the demister 34, and is discharged from a flue gas outlet 62.
As shown in fig. 1, a fan 63 is provided at the flue gas inlet 61, wherein the fan 63 is used for drawing flue gas into the absorption tower 3. The first heat exchanger 4 and the second heat exchanger 5 are plate heat exchangers or shell-and-tube heat exchangers. The cooling water of the present embodiment is a separate circulation loop and is connected to a cooling tower or cooling device. The temperature and flow of the cooling circulating water can be adjusted and controlled by controlling the cooling device and controlling the frequency conversion of the second circulating pump 20.
One specific use case is as follows:
the flue gas inlet 61 enters 45 ten thousand Nm3The dry bulb temperature of the high-temperature flue gas is 130-150 ℃, the dew point is 40-42 ℃, and the content of imported sulfides is 50mg/Nm3Dust content 30mg/Nm3) The flue gas is sent into an absorption tower 2 through a fan 63, after the flue gas is sprayed by a lower layer of 31-55 ℃ solution (35% KCl solution) in the absorption tower 2, the temperature of the flue gas dry bulb is reduced to 70-80 ℃, the dew point is increased to 43-45 ℃, then the temperature of the flue gas dry bulb is reduced to 45-55 ℃ by 32-42 ℃ solution spraying (34.5% KCl solution) in the secondary spraying 32, the dew point is reduced to 38-42 ℃, and finally the flue gas is discharged through a demister 34 to further remove dust particles in the flue gas and is discharged.
Wherein the first circulating liquid flow is 1200m3H, second cycleThe circulation flow is 1000m3H, the flow rate of the heating water is 1000m3The flow rate of cooling water is 500-1000 m3H is used as the reference value. Through the first heat exchanger 4, the temperature of the heating water is increased from 40-45 ℃ to 46-51 ℃, and the heat recovery of 5-6 MW of the flue gas waste heat is realized. The absolute moisture content of the flue gas is not changed in the whole process (namely the dew point of the outlet flue gas is not changed), and the sulfide content is reduced to 10mg/Nm3Below h, the dust content of the flue gas outlet 62 is reduced to 5mg/Nm3The following. When the dew point of the flue gas fluctuates, the temperature of the spraying liquid of the second spraying 32 is followed, so that the moisture content of the flue gas at the flue gas inlet 61 and the flue gas outlet 62 is kept unchanged, and the volume of the whole circulating liquid of the system is kept unchanged. The fluctuation of the liquid levels of the first solution tank 11 and the second solution tank 21 is less than 0.5m (the size of the solution tanks is phi 4.m by 4.5m), and the stable operation of the whole system is met.
The invention is suitable for integration of desulfurization, dust removal and waste heat recovery of high-temperature flue gas, can realize desulfurization, dust removal purification and waste heat recovery of hot and wet flue gas, has single and multiple purposes, adopts a solution spraying method and a double-layer heat exchange system, maintains the concentration and the liquid level of circulating liquid in a balanced state, solves the requirement of water supplement required by conventional desulfurization, and realizes the synergistic treatment effect of waste heat recovery and desulfurization and dust removal.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The utility model provides a high temperature flue gas desulfurization is removed dust and waste heat recovery self-balancing system which characterized in that, high temperature flue gas desulfurization is removed dust and waste heat recovery self-balancing system includes:
the absorption tower is provided with a flue gas inlet, a flue gas outlet, a first solution outlet and a second solution outlet;
the system comprises a primary spray, a first heat exchanger and a first circulation loop, wherein the first circulation loop is connected out of a first solution outlet and connected into the primary spray, and the solution in the first circulation loop exchanges heat with heating water in the first heat exchanger;
the second circulation loop is connected out of the second solution outlet and connected into the second circulation loop, and the solution in the second circulation loop exchanges heat with cooling water in the second heat exchanger.
2. The high temperature flue gas desulfurization dust removal and waste heat recovery self-balancing system of claim 1, wherein the first solution outlet is a bottom discharge outlet of the absorption tower, the first solution outlet is an overflow outlet of the absorption tower, and the second solution outlet is higher than the first solution outlet.
3. The system of claim 1, wherein the first circulation loop further comprises a first solution tank and a first circulation pump, and the solution flowing out of the first solution outlet is connected to the first solution tank.
4. The system of claim 3, wherein the first solution tank further comprises a solution treatment device for removing dust particles and sulfides.
5. The system of claim 3, wherein the first solution tank is further connected to a solution feed inlet, and the solution feed inlet is used for solution supplementation.
6. The system of claim 1, wherein the second circulation loop further comprises a second solution tank and a second circulation pump, and the solution flowing out of the second solution outlet is connected to the second solution tank.
7. The system of claim 1, wherein a filler and a demister are further disposed in the absorption tower, and flue gas enters from the flue gas inlet, passes through the filler, the primary spray, the secondary spray and the demister in sequence, and is discharged from the flue gas outlet.
8. The system for desulfurization, dust removal and waste heat recovery from high temperature flue gas as recited in claim 1, wherein a fan is disposed at the flue gas inlet, wherein the fan is used for drawing flue gas into the absorption tower.
9. The system of claim 1, wherein the first heat exchanger and the second heat exchanger are plate heat exchangers or shell-and-tube heat exchangers.
10. The system for desulfurization, dust removal and waste heat recovery from balance of high temperature flue gas as recited in any one of claims 1-9, wherein said cooling water is a separate circulation loop and is connected to a cooling tower or cooling device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010679103.0A CN111744333A (en) | 2020-07-15 | 2020-07-15 | Self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery |
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| CN202010679103.0A CN111744333A (en) | 2020-07-15 | 2020-07-15 | Self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923755A (en) * | 2021-02-05 | 2021-06-08 | 昊姆（上海）节能科技有限公司 | Open type electrically-driven flue gas waste heat recovery and deep purification heat pump system |
| CN113324260A (en) * | 2021-04-01 | 2021-08-31 | 昊姆（上海）节能科技有限公司 | Open type absorption and open type generation heat pump system and method for improving boiler efficiency |
| CN113818940A (en) * | 2021-09-27 | 2021-12-21 | 山东佩森环保科技有限公司 | System and method for generating power by using waste heat of ship desulfurization pre-cooling water |
-
2020
- 2020-07-15 CN CN202010679103.0A patent/CN111744333A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923755A (en) * | 2021-02-05 | 2021-06-08 | 昊姆（上海）节能科技有限公司 | Open type electrically-driven flue gas waste heat recovery and deep purification heat pump system |
| CN113324260A (en) * | 2021-04-01 | 2021-08-31 | 昊姆（上海）节能科技有限公司 | Open type absorption and open type generation heat pump system and method for improving boiler efficiency |
| CN113818940A (en) * | 2021-09-27 | 2021-12-21 | 山东佩森环保科技有限公司 | System and method for generating power by using waste heat of ship desulfurization pre-cooling water |
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