CN110173919A - The device of gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique - Google Patents
The device of gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique Download PDFInfo
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- CN110173919A CN110173919A CN201910360422.2A CN201910360422A CN110173919A CN 110173919 A CN110173919 A CN 110173919A CN 201910360422 A CN201910360422 A CN 201910360422A CN 110173919 A CN110173919 A CN 110173919A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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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
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/126—Absorption type heat pumps
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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
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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
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a kind of devices that gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique, including low-pressure stage solution recycle system, hiigh pressure stage solution recycle system, gas burning system, low-pressure stage solution recycle system includes low-pressure absorber, level-one throttle valve, level-one electric drive membrane separator, primary liquor heat exchanger, primary liquor pump, low pressure segregator, low pressure generator, hiigh pressure stage solution recycle system includes high pressure absorber, two-step throttle valve, second level electric drive membrane separator, second level solution heat exchanger, second level solution pump, high pressure generator, high pressure segregator, second level solution pump, the level-one electric drive membrane separator, second level electric drive membrane separator is electric drive membrane separator, the present invention guarantees that ternary working medium improves luminous efficiency and has no effect on absorbability using electric drive membrane separation technique, improve combustion gas The utilization efficiency of heat；And Thermogenesis is improved by the way of exhaust gas concurrent heating when outdoor temperature is too low.
Description
Technical field
The present invention relates to a kind of novel first kind two-stage ammonium hydroxide gas absorption heat pumps using electric drive membrane separation device
Technology belongs to technical field of heat pumps.
Background technique
North of china in winter heating equipment is mainly boiler at present, meets confession in such a way that the heat that burning generates directly exchanges heat
Heat demand is only capable of making one when ideal is without heat loss by the method for existing raising boiler combustion efficiency and heat exchange efficiency
Secondary efficiency of energy utilization is up to 1.First kind ammonia absorption type heat pump, is driven using high temperature heat, the thermal energy of low-temperature heat source
It is increased to medium temperature, generates the useful thermal energy of a large amount of medium temperature, is to recycle low temperature position to improve the utilization efficiency of thermal energy
The efficient apparatus of thermal energy, the double action with energy saving protection environment.First kind ammonia absorption type heat pump is by commonly inhaling
It receives refrigeration cycle to realize, the coefficient of performance is greater than 1.Combustion of natural gas heat can be made full use of by two stage cycle, into
The coefficient of performance of one step raising gas absorption heat pump.
Ammonia water absorbing heat pump use ammonia-water as working medium to have the advantages that it is cheap, do not destroy natural environment, in work
Industry produces the quality of component and the modern times that precision is secure, is increasingly valued by people.However, the normal boiling point of ammonia and water
It differs relatively small (only 133.4 DEG C), ammonia spirit water content when generator ebuillition of heated separates is big, to heat pump unit
Stability have an impact, so rectifier unit must be used to purify ammonia, investment of equipment is big and distillation process energy consumption is more.It is added the
Three kinds of working medium lithium bromides can effectively improve the luminous efficiency of ammonia, improve the utilization rate of heat, reduce absorption heat pump to heat source
Temperature and the demand of heat simultaneously reduce rectifying device volume.Lithium bromide can hinder the suction of ammonia as the third working medium in absorber
Receipts process, reduces solution in absorber to the absorbability of ammonia, unfavorable to absorption process, reduces high pressure and low-pressure absorber
Quantity of heat production, reduce gas type two-stage first class absorption heat pump the coefficient of performance.Utilize the electric drive film point of electrodialytic technique
From film in device to the selective penetrated property of zwitterion, the reasonable distribution of lithium bromide in solution may be implemented, lithium bromide is improving
Inhibition of the solution to the absorbent properties of ammonia is reduced while the generating ability of ammonia, further improves the absorption of twin-stage first kind ammonia
The coefficient of performance of formula heat pump system.
Natural gas is the heating energy that country vigorously promotes the use as clean energy resource, and gas type absorption heat pump can be with
Improve heat utilization rate, but still remained in gas type absorption heat pump high-grade energy dissipation and heat grade matching ask
Topic.Generator fuel gas exhaust temperature still has 200 DEG C or more of waste heat to be directly discharged into atmosphere, and absorber and rectifying column need the external world
Cooling, north of china in winter outdoor temperature is lower to be difficult to extract heat from environment, and has the larger temperature difference compared with heat supply temperature.Pass through
The two grade utility that gas exhaust piping realizes heat is designed, the utilization efficiency of combustion gas is improved, while being evaporator concurrent heating, guarantees that winter supplies
Warm ability.Reasonable arrangement realizes the effective use of heat in each component to return water, improves heating effect.
Summary of the invention
Goal of the invention: the drawbacks described above as existing for ammonia absorption type heat pump, the present invention provide a kind of based on electric drive film point
Device from skill upgrading gas type ammonium hydroxide bromine heat pump performance, the device can be realized lithium bromide in hiigh pressure stage and low-pressure stage and inhaling
The distribution in device and generator is received, improves two-stage first-class ammonia water absorbing while improving high pressure absorber Thermogenesis
The luminous efficiency of heat pump, while increasing and ensure that Winter heat supply heat.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of device promoting gas type ammonium hydroxide bromine heat pump performance based on electric drive membrane separation technique, including low-pressure stage solution
The circulatory system, hiigh pressure stage solution recycle system, gas burning system, in which:
Low-pressure stage solution recycle system includes that low-pressure absorber, level-one throttle valve, level-one electric drive membrane separator, level-one are molten
Liquid heat exchanger, primary liquor pump, low pressure segregator, low pressure generator, in which: the high strength ammonia low concentration bromine of low-pressure absorber
Change lithium taphole to be connected with the entrance that primary liquor pumps, the outlet of primary liquor pump and the low temperature of primary liquor heat exchanger are high
Concentration ammonia low concentration lithium-bromide solution entrance is connected, the high-temperature high concentration ammonia low concentration lithium-bromide solution of primary liquor heat exchanger
Outlet is connected with the high strength ammonia low concentration lithium-bromide solution entrance of level-one electric drive membrane separator, level-one electric drive membrane separator
High strength ammonia high concentration lithium-bromide solution outlet be connected with low pressure generator high strength ammonia high concentration lithium-bromide solution entrance, it is low
Pressure generator is connected with low pressure segregator；The low concentration ammonia high concentration lithium-bromide solution outlet of low pressure generator and primary liquor heat
The low concentration ammonia high concentration lithium-bromide solution entrance of exchanger is connected, the low-temperature and low-concentration ammonia high concentration of primary liquor heat exchanger
Lithium-bromide solution outlet is connected with the low-temperature and low-concentration ammonia high concentration lithium-bromide solution import of level-one electric drive membrane separator, level-one
The low concentration ammonia low concentration lithium-bromide solution outlet of electric drive membrane separator is connected with level-one throttle valve import, and level-one throttle valve goes out
Mouth is connected with low-pressure absorber low concentration ammonia low concentration lithium-bromide solution import.
Hiigh pressure stage solution recycle system includes that high pressure absorber, two-step throttle valve, second level electric drive membrane separator, second level are molten
Liquid heat exchanger, second level solution pump, high pressure generator, high pressure segregator, second level solution pump, wherein the ammonia of low pressure segregator goes out
Mouth is connected with the ammonia entrance of high pressure absorber, the outlet of high pressure absorber high strength ammonia low concentration lithium-bromide solution and second level solution pump
Entrance be connected, the outlet and the low temperature and high concentration ammonia low concentration lithium bromide entrance phase of second level solution heat exchanger of second level solution pump
Even, the high concentration of high-temperature high concentration ammonia low concentration the lithium bromide outlet and second level electric drive membrane separator of second level solution heat exchanger
Ammonia low concentration lithium bromide entrance is connected, the high strength ammonia high concentration lithium-bromide solution outlet of second level electric drive membrane separator and high pressure
Generator high strength ammonia high concentration lithium-bromide solution entrance is connected, and high pressure generator is connected with high pressure segregator；High pressure generator
The outlet of dilute concentration ammonia high concentration lithium-bromide solution and the low concentration ammonia high concentration lithium-bromide solution of second level solution heat exchanger enter
Mouth is connected, the outlet of high temperature dilute concentration ammonia high concentration lithium-bromide solution and the second level electric drive membrane separator of second level solution heat exchanger
High temperature dilute concentration ammonia high concentration lithium-bromide solution import be connected, the high temperature dilute concentration ammonia dilute concentration of second level electric drive membrane separator
Lithium-bromide solution outlet is connected with two-step throttle valve, and two-step throttle valve is connected with low pressure generator.
The level-one electric drive membrane separator, second level electric drive membrane separator are electric drive membrane separator, and the electricity drives
Dynamic membrane separator includes more than one high strength ammonia-water-lithium bromide solution room, every two high strength ammonia-water-lithium bromide solution
A low concentration ammonia-water-lithium bromide solution room, the low concentration ammonia-water-lithium bromide solution room and high concentration are provided between room
It is separated between ammonia-water-lithium-bromide solution room by a pair of anion and cation exchange membrane, while being located at the high concentration ammonia-water-bromine at both ends
Change lithium solution room and is respectively arranged with positive electrode and negative electrode.Each pair of anion and cation exchange membrane include a cation-exchange membrane and
Anion-exchange membrane is arranged close to the high concentration lithium bromide room side of positive electrode, close to the highly concentrated of negative electrode in anion-exchange membrane
It spends lithium bromide room side and cation-exchange membrane is set.
Gas burning system includes supply air line, exhaust gas heat supplying pipeline and concurrent heating pipeline again, and natural gas is entered by supply air line
High pressure generator burning provides heat for hiigh pressure stage generating process, and when environment temperature is higher than -5 DEG C, exhaust gas passes through exhaust gas again
Heat supplying pipeline enters low pressure generator and provides heat for level-one generating process, and when environment temperature is lower than -5 DEG C, portion is logical
Overfill pipe line enters evaporator supplement refrigerant ammonia evaporation institute's calorific requirement.
Further: it further include refrigerant system, the refrigerant system includes evaporator, condenser, throttling valve,
The ammonia outlet of high pressure segregator, condenser, throttling valve, evaporator and low-pressure absorber ammonia entrance be sequentially connected.
Further: further including water supply and return system, water supply and return system is by water return pipeline successively by low-pressure absorber, low pressure
Return water band is entered low-pressure absorber absorption process by segregator, the cooling coil of high pressure absorber, condenser series connection, water return pipeline
Secondly heat enters the absorption heat of low pressure segregator, the cooling coil for entering back into high pressure absorber absorbs medium temperature heat, return water
Entering condenser from the outlet of the cooling coil of high pressure absorber reduces ammonia temperature, and warm water in generation.
The present invention compared with prior art, has the advantages that
The device provided by the invention that gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique, the heat pump
System is gas type ammonia-water-lithium bromide two-stage first class absorption heat pump circulatory system, and the present invention can efficiently use combustion gas production
Raw high temperature heat generates a large amount of medium temperature hot water heatings.Promotion of the ternary working medium to generating process is utilized in conjunction with electrodialytic technique
And inhibition of the mitigation to absorption process, so that absorption heat pump is had the higher coefficient of performance.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention
Wherein, 1 is evaporator, and 2 be low-pressure absorber, and 3 be level-one throttle valve, and 4 be level-one electric drive membrane separator, and 5 are
Primary liquor heat exchanger, 6 pump for primary liquor, and 7 be low pressure segregator, and 8 be low pressure generator, and 9 be high pressure absorber, and 10 are
Two-step throttle valve, 11 be second level electric drive membrane separator, and 12 be second level solution heat exchanger, and 13 be second level solution pump, and 14 be height
Generator is pressed, 15 be high pressure segregator, and 16 be condenser, and 17 be throttling valve.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this
It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention various
The modification of equivalent form falls within the application range as defined in the appended claims.
A kind of device promoting gas type ammonium hydroxide bromine heat pump performance based on electric drive membrane separation technique, as shown in Figure 1, including
Low-pressure stage solution recycle system, hiigh pressure stage solution recycle system, gas burning system, refrigerant system, water supply and return system, in which:
Low-pressure stage solution recycle system includes low-pressure absorber 2, level-one throttle valve 3, level-one electric drive membrane separator 4, one
Grade solution heat exchanger 5, primary liquor pump 6, low pressure segregator 7, low pressure generator 8, in which: the high concentration of low-pressure absorber 2
The outlet of ammonia low concentration lithium-bromide solution is connected with the entrance of primary liquor pump 6, and the outlet of primary liquor pump 6 and primary liquor heat are handed over
The low temperature and high concentration ammonia low concentration lithium-bromide solution entrance 5a of parallel operation 5 is connected, the high-temperature high concentration ammonia of primary liquor heat exchanger 5
The high strength ammonia low concentration lithium-bromide solution entrance 4a phase of the outlet of low concentration lithium-bromide solution 5b and level-one electric drive membrane separator 4
Even, the high strength ammonia high concentration lithium-bromide solution outlet 4b of level-one electric drive membrane separator 4 and 8 high strength ammonia of low pressure generator are high
Concentration lithium-bromide solution entrance is connected, and low pressure generator 8 is connected with low pressure segregator 7；The low concentration ammonia of low pressure generator 8 is highly concentrated
The outlet of degree lithium-bromide solution is connected with the high temperature low concentration ammonia high concentration lithium-bromide solution entrance 5c of primary liquor heat exchanger 5,
Low-temperature and low-concentration ammonia high concentration lithium-bromide solution outlet 5d and the level-one electric drive membrane separator 4 of primary liquor heat exchanger 5
Low-temperature and low-concentration ammonia high concentration lithium-bromide solution import 4c is connected, the low concentration ammonia low concentration bromine of level-one electric drive membrane separator 4
Change lithium taphole 4d to be connected with 3 import of level-one throttle valve, the outlet of level-one throttle valve 3 is low with 2 low concentration ammonia of low-pressure absorber dense
Lithium-bromide solution import is spent to be connected.
Hiigh pressure stage solution recycle system include high pressure absorber 9, two-step throttle valve 10, second level electric drive membrane separator 11,
Second level solution heat exchanger 12, second level solution pump 13, high pressure generator 14, high pressure segregator 15, second level solution pump 13, wherein
The ammonia outlet of low pressure segregator 7 is connected with the ammonia entrance of high pressure absorber 9,9 high strength ammonia low concentration lithium bromide of high pressure absorber
Taphole is connected with the entrance of second level solution pump 13, the outlet of second level solution pump 13 and the low temperature of second level solution heat exchanger 12
High strength ammonia low concentration lithium bromide entrance 12a is connected, the high-temperature high concentration ammonia low concentration lithium bromide of second level solution heat exchanger 12
Outlet 12b is connected with the high strength ammonia low concentration lithium bromide entrance 11c of second level electric drive membrane separator 11, second level electric drive film point
High strength ammonia high concentration lithium-bromide solution outlet 11d and 14 high strength ammonia high concentration lithium-bromide solution of high pressure generator from device 11
Entrance is connected, and high pressure generator 14 is connected with high pressure segregator 15；The dilute concentration ammonia high concentration lithium bromide of high pressure generator 14 is molten
Liquid outlet is connected with the high temperature low concentration ammonia high concentration lithium-bromide solution entrance 12c of second level solution heat exchanger 12, second level solution
The low concentration of the outlet of low-temperature and low-concentration ammonia high concentration the lithium-bromide solution 12d and second level electric drive membrane separator 11 of heat exchanger 12
Ammonia high concentration lithium-bromide solution import 11a is connected, the low concentration ammonia low concentration lithium-bromide solution of second level electric drive membrane separator 11
Outlet 11b is connected with two-step throttle valve 10, and two-step throttle valve 10 is connected with low pressure generator 9.
The level-one electric drive membrane separator 4, second level electric drive membrane separator 11 are electric drive membrane separator, using electricity
The electrodialytic technique of driving, the electric drive membrane separator include more than one high strength ammonia-water-lithium bromide solution room, often
A low concentration ammonia-water-lithium bromide solution room, the low concentration are provided between two high strength ammonias-water-lithium bromide solution room
It is separated between ammonia-water-lithium-bromide solution room and high strength ammonia-water-lithium bromide solution room by a pair of anion and cation exchange membrane, together
When high strength ammonia-water-lithium bromide solution room positioned at both ends be respectively arranged with positive electrode and negative electrode.Each pair of cation and anion exchange
Film includes a cation-exchange membrane and anion-exchange membrane, close to the high concentration lithium bromide room side of positive electrode setting yin from
Cation-exchange membrane is arranged close to the high concentration lithium bromide room side of negative electrode in proton exchange.
Gas burning system includes supply air line, exhaust gas heat supplying pipeline and concurrent heating pipeline again, and natural gas is entered by supply air line
The burning of high pressure generator 14 provides heat for hiigh pressure stage generating process, and when environment temperature is higher than -5 DEG C, exhaust gas passes through exhaust gas
Heat supplying pipeline enters low pressure generator 8 and provides heat for level-one generating process again, when environment temperature is lower than -5 DEG C, portion
Enter evaporator 1 by concurrent heating pipeline and supplements refrigerant ammonia evaporation institute's calorific requirement.
The refrigerant system includes evaporator 1, condenser 16, throttling valve 17, and the ammonia of high pressure segregator 15 goes out
The ammonia entrance of mouth, condenser 16, throttling valve 17, evaporator 1 and low-pressure absorber 2 is sequentially connected.
Water supply and return system is by water return pipeline successively by the cooling of low-pressure absorber 2, low pressure segregator 7, high pressure absorber 9
Coil pipe, condenser 16 are connected, and return water band is entered 2 absorption process heat of low-pressure absorber by water return pipeline, secondly into low pressure point
The absorption heat of condenser 7, the cooling coil for entering back into high pressure absorber 9 absorb medium temperature heat, and return water is cold from high pressure absorber 9
But coil outlets, which enter condenser 16, reduces ammonia temperature, and warm water in generation.
The heat pump cycle workflow of the present embodiment:
The ammonia-water of low concentration ammonia low concentration lithium bromide-lithium bromide ternary working medium, which absorbs, in low-pressure absorber 2 carrys out flash-pot
1 ammonia generates amount of heat and is cooled down by return water, obtains low-voltage high-temperature high strength ammonia low concentration lithium-bromide solution, and low-voltage high-temperature is high
It is molten that concentration ammonia low concentration lithium-bromide solution obtains high pressure-temperature high strength ammonia low concentration lithium bromide after 6 pressurization of primary liquor pump
Liquid, high pressure-temperature high strength ammonia low concentration lithium-bromide solution enter primary liquor heat exchanger 5 and carry out solution heat exchange, obtain high pressure
Low temperature and high concentration ammonia low concentration lithium-bromide solution, high pressure low temperature high strength ammonia low concentration lithium-bromide solution enter level-one electric drive film
Separator 4 receives the bromination lithium ion filtered out from the other side by anion and cation exchange membrane, generates high pressure low temperature high strength ammonia
High concentration lithium-bromide solution, high pressure low temperature high strength ammonia high concentration lithium-bromide solution enter low pressure generator 8；High pressure low temperature is highly concentrated
It spends ammonia high concentration lithium-bromide solution and obtains steam through combustion of natural gas waste heat in low pressure generator 8, steam passes through rectifying
High pressure absorber 9, the low-voltage high-temperature height ammonia high concentration bromine of generation are sent into high purity ammonia steam is generated after low pressure segregator 7
Change lithium solution to enter in low pressure generator 8；The low-pressure low-temperature low concentration ammonia high concentration bromine that low pressure generator 8 obtains after the completion of occurring
Change lithium solution and obtain low-voltage high-temperature low concentration ammonia high concentration lithium-bromide solution after the heat exchange of primary liquor heat exchanger 5, low pressure is high
Warm low concentration ammonia high concentration lithium-bromide solution enters level-one electric drive membrane separator 4, driving and amberplex in electric field force
To under ion selective characteristic, the bromination lithium ion sieve in solution is chosen the amberplex other side, generates low-voltage high-temperature
Low concentration ammonia low concentration lithium-bromide solution, low-voltage high-temperature low concentration ammonia low concentration lithium-bromide solution throttles through level-one throttle valve 3 to drop
Low-pressure absorber 2 is sent into after pressure.
High pressure absorber 9 absorbs the high purity ammonia gas from low pressure generator 8 and generates heat and absorbed by return water, generates low
Warm high strength ammonia low concentration lithium-bromide solution is forced down, low-pressure low-temperature high strength ammonia low concentration lithium-bromide solution is through second level solution pump 13
High pressure low temperature high strength ammonia low concentration lithium-bromide solution is obtained after boosting, high pressure low temperature high strength ammonia low concentration lithium-bromide solution is sent
Enter second level solution heat exchanger 12, obtains high pressure-temperature high strength ammonia low concentration bromine after absorbing heat in second level solution heat exchanger 12
Change lithium solution, high pressure-temperature high strength ammonia low concentration lithium-bromide solution enters second level electric drive membrane separator 11, and solution receives to come
It is molten to generate high pressure-temperature high strength ammonia high concentration lithium bromide for the bromination lithium ion filtered out from the other side by anion and cation exchange membrane
Liquid, high pressure-temperature high strength ammonia high concentration lithium-bromide solution enter high pressure generator 14, solution in high pressure generator 14 again
Steam is generated through temperature-heat-source heating in waste heat waste heat etc., steam generates high purity ammonia steam after rectifying and high pressure segregator 15
Into condenser 16；Residual high pressure high temperature height ammonia high concentration lithium-bromide solution enters second level solution heat exchanger 12, obtains
To high pressure low temperature low concentration ammonia high concentration lithium-bromide solution, high pressure low temperature low concentration ammonia high concentration lithium-bromide solution enters second level
Electric drive membrane separator 11, in the driving of electric field force and amberplex under ion selective characteristic, the bromine in solution
Change lithium ion sieve and choose the amberplex other side, generates high pressure low temperature low concentration ammonia low concentration lithium-bromide solution, high pressure low temperature
Low concentration ammonia low concentration lithium-bromide solution obtains low-pressure low-temperature low concentration ammonia low concentration bromine after 10 reducing pressure by regulating flow of two-step throttle valve
Change lithium solution, low-pressure low-temperature low concentration ammonia low concentration lithium-bromide solution enters low-pressure absorber 9, absorbs height in low-pressure absorber 9
Purity ammonia steam obtains low-pressure low-temperature high strength ammonia low concentration lithium-bromide solution.
Return water steps up water temperature through low-pressure absorber 2, low pressure segregator 7, the heat exchange of high pressure absorber 9, is finally condensing
Cooling a large amount of high temperature ammonias realize the condensation of ammonia in device 16, and generate warm water in a large amount of.
Apparatus of the present invention guarantee that ternary working medium improves luminous efficiency and has no effect on absorption energy using electric drive membrane separation technique
Power improves the utilization efficiency of fuel gas calorie；And Thermogenesis is improved by the way of exhaust gas concurrent heating when outdoor temperature is too low.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of device for promoting gas type ammonium hydroxide bromine heat pump performance based on electric drive membrane separation technique, it is characterised in that: including
Low-pressure stage solution recycle system, hiigh pressure stage solution recycle system, gas burning system, in which:
Low-pressure stage solution recycle system include low-pressure absorber (2), level-one throttle valve (3), level-one electric drive membrane separator (4),
Primary liquor heat exchanger (5), primary liquor pump (6), low pressure segregator (7), low pressure generator (8), in which: low-pressure absorber
(2) high strength ammonia low concentration lithium-bromide solution outlet is connected with the entrance of primary liquor pump (6), and primary liquor pumps going out for (6)
Mouth is connected with the low temperature and high concentration ammonia low concentration lithium-bromide solution entrance (5a) of primary liquor heat exchanger (5), primary liquor heat
The high-temperature high concentration ammonia low concentration lithium-bromide solution outlet (5b) of exchanger (5) is highly concentrated with level-one electric drive membrane separator (4)
It spends ammonia low concentration lithium-bromide solution entrance (4a) to be connected, the high strength ammonia high concentration lithium bromide of level-one electric drive membrane separator (4)
Taphole (4b) is connected with low pressure generator (8) high strength ammonia high concentration lithium-bromide solution entrance, low pressure generator (8) with it is low
Segregator (7) are pressed to be connected；The outlet of low concentration ammonia high concentration lithium-bromide solution and the primary liquor heat exchanger of low pressure generator (8)
(5) high temperature low concentration ammonia high concentration lithium-bromide solution entrance (5c) is connected, the low-temperature and low-concentration of primary liquor heat exchanger (5)
Ammonia high concentration lithium-bromide solution export the low concentration ammonia high concentration lithium-bromide solution of (5d) and level-one electric drive membrane separator (4) into
Mouth (4c) is connected, and the low concentration ammonia low concentration lithium-bromide solution outlet (4d) of level-one electric drive membrane separator (4) and level-one throttle
Valve (3) import is connected, level-one throttle valve (3) outlet and low-pressure absorber (2) low concentration ammonia low concentration lithium-bromide solution import phase
Even；
Hiigh pressure stage solution recycle system includes high pressure absorber (9), two-step throttle valve (10), second level electric drive membrane separator
(11), second level solution heat exchanger (12), second level solution pump (13), high pressure generator (14), high pressure segregator (15), second level are molten
Liquid pump (13), wherein the ammonia outlet of low pressure segregator (7) is connected with the ammonia entrance of high pressure absorber (9), high pressure absorber (9)
High strength ammonia low concentration lithium-bromide solution outlet is connected with the entrance of second level solution pump (13), the outlet of second level solution pump (13) and
The low temperature and high concentration ammonia low concentration lithium bromide entrance (12a) of second level solution heat exchanger (12) is connected, second level solution heat exchanger
(12) high-temperature high concentration ammonia low concentration lithium bromide outlet (12b) and the high strength ammonia of second level electric drive membrane separator (11) is low dense
It spends lithium bromide entrance (11c) to be connected, the high strength ammonia high concentration lithium-bromide solution outlet of second level electric drive membrane separator (11)
(11d) is connected with high pressure generator (14) high strength ammonia high concentration lithium-bromide solution entrance, high pressure generator (14) and high pressure point
Condenser (15) is connected；The outlet of low concentration ammonia high concentration lithium-bromide solution and the second level solution heat exchanger of high pressure generator (14)
(12) high temperature low concentration ammonia high concentration lithium-bromide solution entrance (12c) is connected, and the low temperature of second level solution heat exchanger (12) is low
The low concentration ammonia high concentration lithium bromide of the outlet of concentration ammonia high concentration lithium-bromide solution (12d) and second level electric drive membrane separator (11)
Solution inlet port (11a) is connected, the low concentration ammonia low concentration lithium-bromide solution of second level electric drive membrane separator (11) outlet (11b) with
Two-step throttle valve (10) is connected, and two-step throttle valve (10) is connected with low-pressure absorber (9)；
The level-one electric drive membrane separator (4), second level electric drive membrane separator (11) are electric drive membrane separator, the electricity
Driving membrane separator includes more than one high strength ammonia-water-lithium bromide solution room, and every two high strength ammonia-water-lithium bromide is molten
Be provided with a low concentration ammonia-water-lithium bromide solution room between liquid chamber, the low concentration ammonia-water-lithium bromide solution room with it is highly concentrated
It is separated between degree ammonia-water-lithium-bromide solution room by a pair of of anion and cation exchange membrane, while being located at the high concentration ammonia-water-at both ends
Lithium-bromide solution room is respectively arranged with positive electrode and negative electrode；Each pair of anion and cation exchange membrane includes a cation-exchange membrane
And anion-exchange membrane, anion-exchange membrane is set close to the high concentration lithium bromide room side of positive electrode, close to the height of negative electrode
Cation-exchange membrane is arranged in concentration lithium bromide room side；
Gas burning system includes that heat supplying pipeline and concurrent heating pipeline, natural gas enter high pressure by supply air line again for supply air line, exhaust gas
Generator (14) burning provides heat for hiigh pressure stage generating process, and when environment temperature is higher than -5 DEG C, exhaust gas passes through exhaust gas again
Heat supplying pipeline enters low pressure generator (8) and provides heat for level-one generating process, when environment temperature is lower than -5 DEG C, portion
Enter evaporator (1) by concurrent heating pipeline and supplements refrigerant ammonia evaporation institute's calorific requirement.
2. the device of gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique according to claim 1,
It is characterized in that: further including refrigerant system, the refrigerant system includes evaporator (1), condenser (16), throttling valve
(17), the ammonia outlet of high pressure segregator (15), condenser (16), throttling valve (17), evaporator (1) and low-pressure absorber
(2) ammonia entrance is sequentially connected.
3. the device of gas type ammonium hydroxide bromine heat pump performance is promoted based on electric drive membrane separation technique according to claim 2,
It is characterized in that: further including water supply and return system, water supply and return system is successively segregated low-pressure absorber (2), low pressure by water return pipeline
Return water band is entered low-pressure absorber by device (7), the cooling coil of high pressure absorber (9), condenser (16) series connection, water return pipeline
(2) secondly absorption process heat enters the absorption heat of low pressure segregator (7), enters back into the cooling coil of high pressure absorber (9)
Medium temperature heat is absorbed, return water, which enters condenser (16) from the outlet of the cooling coil of high pressure absorber (9), reduces ammonia temperature, and produces
Warm water in life.
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| CN113294937A (en) * | 2021-05-18 | 2021-08-24 | 闫广 | Multi-element multi-effect absorption heat pump |
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| CN108662808A (en) * | 2017-03-27 | 2018-10-16 | 胡军勇 | A kind of two-stage superposition type absorption/compression composite refrigeration cycle system with engine waste heat and power link driving |
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