CN204718176U - Utilize the absorption system of residual heat from boiler fume - Google Patents
Utilize the absorption system of residual heat from boiler fume Download PDFInfo
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- CN204718176U CN204718176U CN201520396268.1U CN201520396268U CN204718176U CN 204718176 U CN204718176 U CN 204718176U CN 201520396268 U CN201520396268 U CN 201520396268U CN 204718176 U CN204718176 U CN 204718176U
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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
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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]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model discloses a kind of absorption system utilizing residual heat from boiler fume, relate to energy-saving equipment technical field, comprise generator, condenser, evaporimeter and absorber, the heat-exchanger rig be connected with boiler exhaust gas pipeline is provided with in generator, the steam outlet of generator is communicated with condenser, the water at low temperature outlet of condenser is communicated with evaporimeter through choke valve, the chilled water of evaporimeter is imported and exported and is led to each user, the water at low temperature vapor outlet port of evaporimeter is communicated with absorber, the high concentration lithium-bromide solution of generator flows to absorber, the low concentration lithium-bromide solution of absorber is communicated with generator by solution pump.Through heat-exchanger rig by fume afterheat for generator provides thermal source, make flue gas and lithium-bromide solution carry out thermal energy exchange under isolation, reach the object making full use of fume afterheat.The utility model has that structure is simple, the advantage of green energy conservation, utilizes fume afterheat to provide thermal source for refrigeration system, reaches the object that fume afterheat utilizes, high efficiency of energy uses.
Description
Technical field
The utility model relates to energy-saving equipment technical field.
Background technology
At present, station boiler is the heat energy or other heat energy that utilize combustion of fossil fuel to discharge, the working medium such as heated feed water, to obtain steam, the hot water of regulation parameter (temperature, pressure) and quality, its exhaust gas temperature is generally 110 ~ 160 DEG C, leaves the flue gas of boiler body, then passes through deduster, send chimney by air-introduced machine to through desulfurization, enter air.Flue gas is the mixture of multiple gases composition and flying dust composition because of it, and therefore it is a kind of low grade heat energy, but it has the heat energy of a great deal of, usually accounts for 6% ~ 8% of station boiler input heat, has the value continuing recycling.
Turbine condenser is that steam condensation steam turbine being finished merit becomes condensate water, set up at the steam drain of steam turbine and keep the vacuum of regulation, turbine back pressure determines condensing water temperature 20 ~ 35 DEG C, unit capacity determines condensing capacity, in order to make up therrmodynamic system loss of steam and water, meeting water boiler feedwater requirement amount and also will supplement a certain amount of normal-temperature water---demineralized water, to Condenser's Hot Well, is transported to back heating system by condensate pump, ensures recycling of water.
Absorption refrigeration is that the binary solution utilizing two kinds of materials to form carries out as working medium.These two kinds of materials have different boiling points under same pressure, and wherein high boiling component is called absorbent, and lower boiling component is called cold-producing medium.Water, is applicable to Large Central Air Conditioning System usually with conventional absorbent---refrigerant compositions has two kinds: one is lithium bromide---; Another kind is water---ammonia, is applicable to minitype air conditioner usually.Be working medium with lithium-bromide solution, produce low temperature chilled water, as the low-temperature receiver in air-conditioning system and technological process, can extensive use hand in industrial and mining enterprises such as light textile, chemical industry, electronics, food, also can be applicable to the occasions such as hotel, theater, hospital, building.
Taking lithium bromide water solution as the absorption system main feature of working medium is: the thermal efficiency is low, and cooling water consumption is large, and the sealing requirements of equipment is higher, has certain corrosivity.But owing to can directly utilize the thermal source of low parameter to be used as power, be the desirable refrigerating plant utilizing low-grade heat source; The strong adaptability of condition change to external world, can steady running in the scope of pressure 0.2 ~ 0.8 MPa (meter pressure) of heating steam, cooling water temperature 20 ~ 35 DEG C, chilled water leaving water temperature 5 ~ 15 DEG C.This is typical in the equipment of refrigeration heat
Therefore, if develop a kind of refrigeration system, the condensate water comprehensive utilization of the fume afterheat of station boiler and turbine condenser got up, this will have important and far-reaching meaning, not only be conducive to the effective use energy, but also can obtain more economical refrigeration.The utility model is considered based on this kind and is born.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of structure simple, can the absorption system that residual heat from boiler fume be utilized of economize energy.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of absorption system utilizing residual heat from boiler fume, comprise generator, condenser, evaporimeter and absorber, the heat-exchanger rig be connected with boiler exhaust gas pipeline is provided with in described generator, the steam outlet of described generator is communicated with condenser, the water at low temperature outlet of described condenser is communicated with evaporimeter through choke valve, the chilled water of described evaporimeter is imported and exported and is led to each user, the water at low temperature vapor outlet port of described evaporimeter is communicated with absorber, the high concentration lithium-bromide solution outlet of described generator is communicated with absorber, the low concentration lithium-bromide solution outlet of described absorber is communicated with generator by solution pump.
Preferably, the cooling water inlet of described condenser exports with the condensate pump of turbine condenser and is connected, and coolant outlet and the steam turbine of the described condenser back heating system that feeds water is connected.
Preferably, described heat-exchanger rig is heat exchange of heat pipe.
Preferably, the radiating tube be connected with personal high-temperature vapor arm and steam turbine cycle water system is also provided with in described generator.
The beneficial effect adopting technique scheme to produce is: boiler exhaust gas pipeline is connected with the heat exchange of heat pipe in generator, by fume afterheat through heat exchange of heat pipe for generator provides thermal source, by heat pipe, flue gas and lithium-bromide solution are carried out thermal energy exchange under isolation, can be generator supplemental heat source by personal high-temperature vapor arm when fume afterheat undersupply and heat pipe are safeguarded, to ensure the continuous operation of refrigeration system; The condensate water that cooling water needed for condenser can utilize turbine condenser to discharge, condensate water enters steam turbine feedwater back heating system again and continues heating after condenser heat temperature raising, reaches the object fully recycling waste heat.The utility model has that structure is simple, the advantage of green energy conservation, fume afterheat is utilized to provide thermal source for refrigeration system, the temperature of flue gas is higher, then the coefficient of performance (also known as COP) of refrigeration system is higher, refrigerating efficiency is also higher, for each user provides low-temperature receiver, plays the object of refrigeration cool-down, substitute former air-conditioning or other refrigeration plant, the recycling of fume afterheat, reach the object of efficient use of energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
In figure: 1-generator, 2-condenser, 3-evaporimeter, 4-absorber, 5-smoke discharging pipe, 6-heat-exchanger rig, 7-choke valve, 8-user, 9-solution pump, 10-turbine condenser, 11-condensate pump, 12-boiler, 13-steam turbine feedwater back heating system, 14-uses by oneself high-temperature vapor arm, 15-deduster, 16-air-introduced machine, 17-desulphurization plant, 18-chimney, 19-water circulating pump, 20-steam turbine cycle water system.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of absorption system utilizing residual heat from boiler fume as shown in Figure 1, comprise generator 1, condenser 2, evaporimeter 3 and absorber 4, the heat-exchanger rig 6 be connected with boiler 12 smoke discharging pipe 5 is provided with in described generator 1, the steam outlet of described generator 1 is communicated with condenser 2, the water at low temperature outlet of described condenser 2 is communicated with evaporimeter 3 through choke valve 7, the chilled water of described evaporimeter 3 is imported and exported and is led to each user 8, the water at low temperature vapor outlet port of described evaporimeter 3 is communicated with absorber 4, the high concentration lithium-bromide solution outlet of described generator 1 is communicated with absorber 4, the low concentration lithium-bromide solution outlet of described absorber 4 is communicated with generator 1 by solution pump 9.
In order to make full use of the condensate water of turbine condenser 10, can export connected by the condensate pump 11 of condenser 2, coolant outlet and the steam turbine of described condenser 2 back heating system 13 that feeds water is connected.
As a kind of preferred structure, heat exchange of heat pipe selected by described heat-exchanger rig 6.General heat pipe is made up of shell, liquid-sucking core and end cap, and inside heat pipe is pumped into negative pressure state, is filled with suitable liquid, and this boiling point of liquid is low, easily volatilizees, and tube wall has liquid-sucking core, and it is made up of capillary-porous material; Heat pipe one end is evaporation ends, one end is condensation end in addition, when heat pipe one end is heated, the liquid rapid vaporization in capillary, steam flows to other one end under the power of thermal diffusion, and at cold junction condensation releases heat, liquid flows back to evaporation ends along porous material by capillarity again, and so circulation is more than, and this circulation is carried out fast, heat can be come, so heat pipe has the good capacity of heat transmission by conduction continuously.
If when the heat energy of fume afterheat supply is not enough or in heat pipe maintenance process, be also provided with the radiating tube be connected with personal high-temperature vapor arm 14 in generator 1, the high-temperature steam by boiler supplements, to meet refrigeration system running.In addition, the waste heat of steam turbine cycle water system 20 can also be made full use of, there is part of waste heat in the recirculated water through turbine condenser 10, generator 1 is entered through water circulating pump 19 pressurization, under isolation, carry out thermal energy exchange with lithium-bromide solution, then flow through evaporimeter 3 and further enter steam turbine cycle water system 20 again after cooling and complete circulation.
Operation principle of the present utility model is: in process of refrigerastion, and after lithium bromide water solution is heated in generator 1, the water in solution is constantly vaporized; Steam enters condenser 2, by condensation after condensate water cooling; Along with the continuous vaporization of water in generator 1, lithium-bromide solution concentration constantly raises, and enters absorber 4; When the water in condenser 2 enters evaporimeter 3 by choke valve 7, rapid expansion and vaporizing, and in vaporescence a large amount of heat absorbing chilled water in evaporimeter 3, thus reach the object of cooling refrigeration; In the process, the water at low temperature steam of evaporimeter 3 enters absorber 4, and absorbed by the dense lithium-bromide solution in absorber 4, solution concentration progressively reduces, and sends generator 1 back to by solution pump 9, completes whole circulation.
Specific works process is as follows: the smoke discharging pipe 5 of boiler 12 flue gas after deduster 15 is connected with the heat exchange of heat pipe in generator 1, fume afterheat is utilized to provide thermal source for generator 1, by heat pipe, flue gas and lithium-bromide solution being carried out thermal energy exchange under isolation, can be generator 1 supplemental heat source by personal high-temperature vapor arm 14 when temporary downtimes safeguarded by fume afterheat undersupply and heat pipe; Needed for condenser 2, cooling water can utilize the condensate water that turbine condenser 10 is discharged, and condensate water enters steam turbine feedwater back heating system 13 again and continues heating after condenser 2 heat temperature raising, reaches the object fully recycling waste heat; Flue gas after heat exchange of heat pipe cooling, sends chimney 18 by air-introduced machine 16 to through desulphurization plant 17, enters air.
In sum, the utility model has that structure is simple, the advantage of green energy conservation, and utilize fume afterheat to provide thermal source for refrigeration system, the temperature of flue gas is higher, then the coefficient of performance (also known as COP) of refrigeration system is higher, and refrigerating efficiency is also higher.Such as, if flue-gas temperature about 60 DEG C, then refrigeration system COP about 0 ~ 40; If flue-gas temperature about 90 DEG C, then refrigeration system COP about 0 ~ 70; If flue-gas temperature about 120 DEG C, then refrigeration machine COP can reach more than 110 for each user provides low-temperature receiver, plays the object of refrigeration cool-down, substitutes former air-conditioning or other refrigeration plant, the recycling of fume afterheat, reaches the object of efficient use of energy.
Set structure of the present utility model is simple, low to the requirement of installation foundation, without the need to special support; Volume is little, and land used is economized, and manufacturing management is easy, and maintenance cost is also cheaper; Operational security is reliable, and during operation, low noise is little with vibration; During using lithium bromide ~ water as working medium, nontoxic, odorless, is conducive to meeting environmental requirement; Refrigeration machine carries out under vacuum conditions, without high pressure explosion danger; Refrigerating capacity adjustable range is wide, can carry out the step-less adjustment of refrigerating capacity in the load of 20% ~ 100%.
Claims (4)
1. one kind utilizes the absorption system of residual heat from boiler fume, it is characterized in that: comprise generator (1), condenser (2), evaporimeter (3) and absorber (4), the heat-exchanger rig (6) be connected with boiler (12) smoke discharging pipe (5) is provided with in described generator (1), the steam outlet of described generator (1) is communicated with condenser (2), the water at low temperature outlet of described condenser (2) is communicated with evaporimeter (3) through choke valve (7), the chilled water of described evaporimeter (3) is imported and exported and is led to each user (8), the water at low temperature vapor outlet port of described evaporimeter (3) is communicated with absorber (4), the high concentration lithium-bromide solution outlet of described generator (1) is communicated with absorber (4), the low concentration lithium-bromide solution outlet of described absorber (4) is communicated with generator (1) by solution pump (9).
2. the absorption system utilizing residual heat from boiler fume according to claim 1, it is characterized in that: the cooling water inlet of described condenser (2) exports with the condensate pump (11) of turbine condenser (10) and is connected, coolant outlet and the steam turbine of described condenser (2) back heating system (13) that feeds water is connected.
3. the absorption system utilizing residual heat from boiler fume according to claim 1, is characterized in that: described heat-exchanger rig (6) is heat exchange of heat pipe.
4. the absorption system utilizing residual heat from boiler fume according to claim 1, is characterized in that: be also provided with the radiating tube be connected with personal high-temperature vapor arm (14) and steam turbine cycle water system (20) in described generator (1).
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| CN201520396268.1U CN204718176U (en) | 2015-06-10 | 2015-06-10 | Utilize the absorption system of residual heat from boiler fume |
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| CN201520396268.1U CN204718176U (en) | 2015-06-10 | 2015-06-10 | Utilize the absorption system of residual heat from boiler fume |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925115A (en) * | 2017-03-28 | 2017-07-07 | 中国华电科工集团有限公司 | It is the gas distributed energy system and technique of reducing agent denitration using liquefied ammonia |
| CN107781835A (en) * | 2017-10-24 | 2018-03-09 | 西安恒瑞工程流体设备有限公司 | A kind of tail flue gas total energy utilization system |
| CN109186299A (en) * | 2018-07-10 | 2019-01-11 | 天津大学 | A kind of flue gas waste heat recovery system and method based on absorption refrigeration unit |
| CN109798583A (en) * | 2018-11-04 | 2019-05-24 | 大唐(北京)能源管理有限公司 | A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat |
| CN109869704A (en) * | 2018-12-29 | 2019-06-11 | 中民电力有限公司 | A kind of natural gas total heat recovery utilizes system |
| CN114034092A (en) * | 2021-11-01 | 2022-02-11 | 嵊州市浙江工业大学创新研究院 | Waste heat refrigeration type integrated stove and control method thereof |
| CN114111094A (en) * | 2021-11-30 | 2022-03-01 | 中国华能集团清洁能源技术研究院有限公司 | Desulfurization slurry waste heat recovery device utilizing unit steam extraction and absorption heat pump |
| CN114322355A (en) * | 2021-10-21 | 2022-04-12 | 西安热工研究院有限公司 | Flue gas water taking system of cooperative absorption type refrigerating device and operation method |
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2015
- 2015-06-10 CN CN201520396268.1U patent/CN204718176U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925115A (en) * | 2017-03-28 | 2017-07-07 | 中国华电科工集团有限公司 | It is the gas distributed energy system and technique of reducing agent denitration using liquefied ammonia |
| CN106925115B (en) * | 2017-03-28 | 2023-05-05 | 中国华电科工集团有限公司 | Gas distributed energy system and process for denitration by using liquid ammonia as reducing agent |
| CN107781835A (en) * | 2017-10-24 | 2018-03-09 | 西安恒瑞工程流体设备有限公司 | A kind of tail flue gas total energy utilization system |
| CN107781835B (en) * | 2017-10-24 | 2018-08-17 | 西安恒瑞工程流体设备有限公司 | A kind of tail flue gas total energy utilization system |
| CN109186299A (en) * | 2018-07-10 | 2019-01-11 | 天津大学 | A kind of flue gas waste heat recovery system and method based on absorption refrigeration unit |
| CN109798583A (en) * | 2018-11-04 | 2019-05-24 | 大唐(北京)能源管理有限公司 | A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat |
| CN109869704A (en) * | 2018-12-29 | 2019-06-11 | 中民电力有限公司 | A kind of natural gas total heat recovery utilizes system |
| CN109869704B (en) * | 2018-12-29 | 2024-04-05 | 中民云能源科技有限公司 | Natural gas total heat recycling system |
| CN114322355A (en) * | 2021-10-21 | 2022-04-12 | 西安热工研究院有限公司 | Flue gas water taking system of cooperative absorption type refrigerating device and operation method |
| CN114034092A (en) * | 2021-11-01 | 2022-02-11 | 嵊州市浙江工业大学创新研究院 | Waste heat refrigeration type integrated stove and control method thereof |
| CN114111094A (en) * | 2021-11-30 | 2022-03-01 | 中国华能集团清洁能源技术研究院有限公司 | Desulfurization slurry waste heat recovery device utilizing unit steam extraction and absorption heat pump |
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