CN104807249A - Thermal energy freezing method and refrigerator using method - Google Patents
Thermal energy freezing method and refrigerator using method Download PDFInfo
- Publication number
- CN104807249A CN104807249A CN201510161393.9A CN201510161393A CN104807249A CN 104807249 A CN104807249 A CN 104807249A CN 201510161393 A CN201510161393 A CN 201510161393A CN 104807249 A CN104807249 A CN 104807249A
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- Prior art keywords
- ammonia
- gas
- heat
- water
- heat energy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/006—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the sorption type system
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/04—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being ammonia evaporated from aqueous solution
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- 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]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
Abstract
The invention discloses a thermal energy freezing method and a refrigerator using the freezing method. The refrigerator comprises a fuel gas heat exchanger, a thermal energy generator, a gas-liquid separator, a condenser, a liquid ammonia tank, a freezing evaporator, an absorber, and an ammonium hydroxide absorption refrigerator composed of a solution pump. The refrigerator is characterized in that ammonium hydroxide is driven to separate and absorb by adopting thermal energy in flue gas exhausted in industrial production so as to freeze, and the flue gas is exhausted by a power plant, a chemical plant, an industrial furnace and an internal combustion engine. Nanometer materials are applied to an application device of the gas-liquid separator, and thus the separating ability of ammonia gas and aqueous solution is increased. The scheme belongs to secondary utilization of energy and has a great significance to energy saving and emission reduction.
Description
Technical field
The invention of this heat energy refrigerator relates to a kind of Absorption Refrigerator, particularly relates to and utilizes the freezing utilization of the recovery of industrial waste heat energy; This equipment relates to and utilizes Technique of Utilizing Waste Heat For Refrigeration and thermoelectric cold cogeneration technology field.
Background technology
Conventional chiller is generally divided into Absorption Refrigerator and compression refrigerating machine.Compression refrigerating machine, by improving the pressure of cold-producing medium to realize kind of refrigeration cycle, is generally made up of pump, condenser, evaporimeter.Its advantage is that efficiency is high, but its consumption electric energy is more; Conventional suction formula refrigeration machine then by binary solution as working medium, wherein low boiling component be used as cold-producing medium, utilize its evaporation to freeze, high boiling component is as absorbent, and utilize it to finish the work circulation to refrigerant vapour absorption, its advantage utilizes low-grade energy, realize energy source secondary to utilize, utilize little power consumption, by heat energy utilization heating and cooling, movement-less part, noiseless easy to use, shortcoming is that volume is large, and refrigerating efficiency is low, cannot be applied to the low-temperature heat source of 90 degree.
Summary of the invention
The object of the invention is to provide a kind of flue gas of discharging in industrial production that utilizes and drives ammonia absorption to carry out the unit of freeze applications.Technology of the present invention solves thermal waste in the industrial smoke discharging such as power plant, chemical plant, belongs to secondary energy sources and utilizes, can turn waste into wealth and carry out multipurpose freeze applications.For user provides cold requirement, economize energy, protection of the environment.
The invention provides a kind of heat energy refrigerator, it comprises by flue gas heat-exchange unit (1), heat energy generator (2), gas-liquid separator (3), condenser (4), ammonia tank (5), refrigerating evaporator (6), absorber (7), and the ammonia water absorbing refrigerator that solution pump (8) forms, it is characterized in that, in coal-fired flue-gas pipeline, access flue gas heat-exchange unit (1), flue gas heat-exchange unit (1) is connected on heat energy generator (2) by circulating heat pipe pipeline, described heat energy generator (2) is built with ammonia water mixture, heat energy generator (2) is connected to gas-liquid separator (3) by pipeline, gas-liquid separator (3) upper end is connected on condenser (4) by pipeline, gas-liquid separator (3) lower end is connected on absorber (7) by pipeline, described condenser (4) connects ammonia tank (5) by pipeline, ammonia tank (5) is connected on refrigerating evaporator (6) by pipeline, in described power plant coal-fired flue-gas pipeline, flue gas heat-exchange unit (1) is series in smoke discharge tube road, use the heat energy in metal heat pipe extraction flue gas exhaust, described flue gas heat-exchange unit (1) is also provided with steam generator, form water vapour between steam generator and heat energy generator (2) to circulate, in the bottom of heat energy generator (2), water economizer (9) is set, the hutch water device that water economizer (9) is circulated by circulating pump and water vapour is connected, described condenser (4) and absorber (7) are respectively equipped with cooling water recirculation system, described cooling water recirculation system is entered in condenser (4) and absorber (7) by circulating pump drive cooling water carries out cooling operations, post-job water constantly recycles after radiating and cooling, nano film material is equipped with in described gas-liquid separator (3) inside, this material is that the film made with nano material is combined with stainless steel filtering net, form water, effective separation of ammonia, this nano film material can increase amino molecule precipitation efficiency from water, described refrigerating evaporator (6) is containing choke valve and freezing generation switch.
The present invention also provides a kind of heat energy freezing method, and it mainly comprises following 3 steps:
(1), water vapour circulation: flue gas heat-exchange unit is series in smoke discharge tube road, this flue gas is the discarded flue gas of discharging in industrial production, use the water in the energy heats flue gas heat-exchange unit in metal heat pipe extraction flue gas exhaust in circulating heat pipe thus produce steam, steam temperature scope is between 90 DEG C ~ 300 DEG C, steam is pressed in heat energy generator automatically by the pressure formed after water vapor, and post-job steam is got back to by return pipe in the circulating heat pipe in flue gas heat-exchange unit and continued heat cycles use;
(2), ammonia refrigerant circulates: in heat energy generator, be contained with ammonia water mixture, the steam come through step (1) heats the ammonia water mixture of heat energy generator thus produces gas-liquid mixed ammonia, post-job part steam is condensed into water, then the water economizer bottom heat energy generator is entered, by circulating pump this part water delivered in hutch water device again and proceed step (1), the gas-liquid mixed ammonia generated that is heated enters gas-liquid separator, isolate the cold-producing medium ammonia steam of high concentration, absorber is entered through gas-liquid separator separates ammoniacal liquor weak solution out, cold-producing medium ammonia steam enters ammonia tank after entering condenser and then condensing into liquid, liquid refrigerant ammonia evaporates by entering refrigerating evaporator after choke valve step-down, ammonia refrigerant gas after evaporation enters absorber, concentrated solution is become after weak solution absorbing ammonia refrigerant gas in absorber, send into heat energy generator heat cycles by solution pump again to use,
(3), cooling water circulation: condenser and absorber carry out cooling water circulation respectively, cooling water is driven by circulating pump and enters condenser, the high concentration cold-producing medium ammonia steam gone out with gas-liquid separator separates exchanges, take away the heat energy being formed and produce in liquefied ammonia process, after radiating and cooling, enter condenser more constantly circulate; Meanwhile, cooling water enters absorber, and liberated heat when taking away ammonia absorption ammonia, constantly recycles after radiating and cooling.
The present invention uses ammoniacal liquor for refrigeration working medium, can reach the refrigeration of-30 degree.Instead of the chloro-fluoro-carbon kind cold-producing medium that conventional compression formula refrigeration system adopts, without greenhouse effects.The low-temperature heat source of 90 degree can be applied to, economize energy and energy source secondary be utilized there is value outstanding especially.
Accompanying drawing explanation
Fig. 1 is by heat energy refrigerator working cycles flow chart.
Figure number illustrates: 1-flue gas heat-exchange unit; 2-heat energy generator; 3-gas-liquid separator; 4-condenser; 5-ammonia tank; 6-refrigerating evaporator; 7-absorber; 8-solution pump; 9-water economizer.
Detailed description of the invention
Below in conjunction with technical scheme and accompanying drawing, describe the concrete enforcement of this programme in detail.
Such as shown in Fig. 1, the course of work of this heat energy refrigerator can be divided into four working cycles to describe: water vapour circulation, ammonia refrigerant circulation, ammonia spirit circulation, cooling water circulation.
Water vapour circulates: as shown in Figure 1, after drawing the heat in flue gas by the flue gas heat-exchange unit 1 be placed in flue gas exhaust flue, heat pipe in heating flue gas heat-exchange unit 1, steam is produced after water in heat pipe is heated, steam temperature scope is between 90 DEG C ~ 300 DEG C, steam is automatically pressed into by the pressure formed after water vapor and enters in heat energy generator 2, and heat exchange in heat energy generator 2, passes to the ammonia water mixture in heat energy generator 2 heat; Part water vapour is got back in flue gas heat-exchange unit 1 with circulation line, by continuation heating recirculation; In heat energy generator 2 heat exchange, the partial coagulation water of formation, by the water economizer 9 of heat energy generator 2 lower end, delivers in hutch water device with circulating pump, continues to participate in water vapour circulation.
Ammonia refrigerant circulates: heat energy generator 2 transforms the heat energy that flue gas heat-exchange unit 1 provides, and heats ammonia spirit, and the gas-liquid mixture produced, after gas-liquid separator 3 is separated, isolates the cold-producing medium ammonia steam of high concentration.Condense into liquid through condenser 4 and enter ammonia tank 5.Liquid refrigerant ammonia evaporates by entering refrigerating evaporator 6 after choke valve step-down.Ammonia refrigerant gas after evaporation enters absorber 7, becomes concentrated solution after being absorbed by weak solution, then by solution pump 8, concentrated solution is sent into heat energy generator 2 and again heat, formation kind of refrigeration cycle of going round and beginning again.
Ammonia spirit circulates: the ammoniacal liquor weak solution separated through gas-liquid separator 3 enters absorber 7, and becomes concentrated solution after absorbing ammonia cold-producing medium, then sends into generator heating by solution pump 8.Go round and begin again formation solution circulation.
Cooling water circulation: cooling water is driven by circulating pump and enters condenser 4, exchanges with gas-liquid separator 3 isolated high concentration cold-producing medium ammonia steam, takes away the heat energy formed in liquefied ammonia forming process, enters again and constantly circulate through condenser 4 after radiating and cooling.Meanwhile, cooling water enters absorber 7, and liberated heat when taking away ammonia absorption ammonia, constantly recycles after radiating and cooling.
The freezing generation switch that in the present invention, refrigerating evaporator contains, can complete less than 0 DEG C freezing, can directly evaporative freezing or by cooling medium change cold after carry out freezing and environmental modulation.
Claims (6)
1. a heat energy refrigerator, it comprises by flue gas heat-exchange unit (1), heat energy generator (2), gas-liquid separator (3), condenser (4), ammonia tank (5), refrigerating evaporator (6), absorber (7), and the ammonia water absorbing refrigerator that solution pump (8) forms, it is characterized in that, in coal-fired flue-gas pipeline, access flue gas heat-exchange unit (1); Flue gas heat-exchange unit (1) is connected on heat energy generator (2) by circulating heat pipe pipeline, described heat energy generator (2) is built with ammonia water mixture, heat energy generator (2) is connected to gas-liquid separator (3) by pipeline, gas-liquid separator (3) upper end is connected on condenser (4) by pipeline, gas-liquid separator (3) lower end is connected on absorber (7) by pipeline, described condenser (4) connects ammonia tank (5) by pipeline, and ammonia tank (5) is connected on refrigerating evaporator (6) by pipeline.
2. heat energy refrigerator according to claim 1, is characterized in that, in described power plant coal-fired flue-gas pipeline, flue gas heat-exchange unit (1) being series in smoke discharge tube road, uses the heat energy in metal heat pipe extraction flue gas exhaust.
3. heat energy refrigerator according to claim 2, it is characterized in that, described flue gas heat-exchange unit (1) is also provided with steam generator, form water vapour between steam generator and heat energy generator (2) to circulate, arrange water economizer (9) in the bottom of heat energy generator (2), the hutch water device that water economizer (9) is circulated by circulating pump and water vapour is connected.
4. heat energy refrigerator according to claim 3, it is characterized in that, described condenser (4) and absorber (7) are respectively equipped with cooling water recirculation system, described cooling water recirculation system is entered in condenser (4) and absorber (7) by circulating pump drive cooling water carries out cooling operations, and post-job water constantly recycles after radiating and cooling.
5. the heat energy refrigerator according to claim arbitrary in claim 1-4, it is characterized in that, nano film material is equipped with in described gas-liquid separator (3) inside, this material is that the film made with nano material is combined with stainless steel filtering net, form effective separation of water, ammonia, this nano film material can increase amino molecule precipitation efficiency from water; Described refrigerating evaporator (6) is containing choke valve and freezing generation switch.
6. adopt a heat energy freezing method for the heat energy refrigerator in claim 1-5 described in arbitrary claim, it mainly comprises following 3 steps:
(1), water vapour circulation: flue gas heat-exchange unit is series in smoke discharge tube road, this flue gas is the discarded flue gas of discharging in industrial production, use the water in the energy heats flue gas heat-exchange unit in metal heat pipe extraction flue gas exhaust in circulating heat pipe thus produce steam, steam temperature scope is between 90 DEG C ~ 300 DEG C, steam is pressed in heat energy generator automatically by the pressure formed after water vapor, and post-job steam is got back to by return pipe in the circulating heat pipe in flue gas heat-exchange unit and continued heat cycles use;
(2), ammonia refrigerant circulates: in heat energy generator, be contained with ammonia water mixture, the steam come through step (1) heats the ammonia water mixture of heat energy generator thus produces gas-liquid mixed ammonia, post-job part steam is condensed into water, then the water economizer bottom heat energy generator is entered, by circulating pump this part water delivered in hutch water device again and proceed step (1), the gas-liquid mixed ammonia generated that is heated enters gas-liquid separator, isolate the cold-producing medium ammonia steam of high concentration, absorber is entered through gas-liquid separator separates ammoniacal liquor weak solution out, cold-producing medium ammonia steam enters ammonia tank after entering condenser and then condensing into liquid, liquid refrigerant ammonia evaporates by entering refrigerating evaporator after choke valve step-down, ammonia refrigerant gas after evaporation enters absorber, concentrated solution is become after weak solution absorbing ammonia refrigerant gas in absorber, send into heat energy generator heat cycles by solution pump again to use,
(3), cooling water circulation: condenser and absorber carry out cooling water circulation respectively, cooling water is driven by circulating pump and enters condenser, the high concentration cold-producing medium ammonia steam gone out with gas-liquid separator separates exchanges, take away the heat energy being formed and produce in liquefied ammonia process, after radiating and cooling, enter condenser more constantly circulate; Meanwhile, cooling water enters absorber, and liberated heat when taking away ammonia absorption ammonia, constantly recycles after radiating and cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161393.9A CN104807249A (en) | 2015-04-03 | 2015-04-03 | Thermal energy freezing method and refrigerator using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510161393.9A CN104807249A (en) | 2015-04-03 | 2015-04-03 | Thermal energy freezing method and refrigerator using method |
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| CN104807249A true CN104807249A (en) | 2015-07-29 |
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| CN201510161393.9A Pending CN104807249A (en) | 2015-04-03 | 2015-04-03 | Thermal energy freezing method and refrigerator using method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869856A (en) * | 2016-09-27 | 2018-04-03 | 天津华赛尔传热设备有限公司 | A kind of low temperature exhaust heat reclaims refrigeration system |
| CN108981221A (en) * | 2018-07-20 | 2018-12-11 | 中盐昆山有限公司 | The system and method to be freezed using steam condensate waste heat |
| CN116625026A (en) * | 2023-07-25 | 2023-08-22 | 浙江科维节能技术股份有限公司 | Energy-saving ammonia refrigerating system for ammonia synthesis device and energy-saving method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869856A (en) * | 2016-09-27 | 2018-04-03 | 天津华赛尔传热设备有限公司 | A kind of low temperature exhaust heat reclaims refrigeration system |
| CN108981221A (en) * | 2018-07-20 | 2018-12-11 | 中盐昆山有限公司 | The system and method to be freezed using steam condensate waste heat |
| CN116625026A (en) * | 2023-07-25 | 2023-08-22 | 浙江科维节能技术股份有限公司 | Energy-saving ammonia refrigerating system for ammonia synthesis device and energy-saving method thereof |
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