CN111623550B - Direct cooling machine - Google Patents
Direct cooling machine Download PDFInfo
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- CN111623550B CN111623550B CN202010553588.9A CN202010553588A CN111623550B CN 111623550 B CN111623550 B CN 111623550B CN 202010553588 A CN202010553588 A CN 202010553588A CN 111623550 B CN111623550 B CN 111623550B
- Authority
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- China
- Prior art keywords
- lithium bromide
- bromide solution
- water
- heat exchange
- sewage
- Prior art date
- 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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- 238000001816 cooling Methods 0.000 title claims abstract description 15
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 212
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 239000010865 sewage Substances 0.000 claims abstract description 53
- 239000002351 wastewater Substances 0.000 claims abstract description 49
- 239000006096 absorbing agent Substances 0.000 claims abstract description 38
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 230000008020 evaporation Effects 0.000 claims abstract description 28
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 239000002826 coolant Substances 0.000 claims description 15
- 238000005057 refrigeration Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims 2
- 238000009833 condensation Methods 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 239000002918 waste heat Substances 0.000 abstract description 4
- 239000011552 falling film Substances 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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
- 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
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
A direct cooling machine belongs to the technical field of waste heat utilization. The invention solves the problem that the existing absorption refrigerating unit cannot utilize high-temperature industrial sewage and wastewater as a driving heat source, so that the heat in the sewage and wastewater cannot be effectively utilized. The dilute lithium bromide solution in the absorber is conveyed into the lithium bromide solution cavity through the dilute lithium bromide solution pipe, the lower part of the lithium bromide solution cavity is communicated with the upper part of the absorber through the concentrated lithium bromide solution pipe, the concentrated lithium bromide solution formed in the lithium bromide solution cavity is conveyed into the absorber through the concentrated lithium bromide solution pipe, the sewage and wastewater enters the flash evaporation chamber through the sewage and wastewater inlet pipe to be subjected to flash evaporation, the vapor after flash evaporation moves upwards and exchanges heat with the dilute lithium bromide solution in the lithium bromide solution cavity, the refrigerant water of the dilute lithium bromide solution is subjected to falling film evaporation, the evaporated vapor enters the condenser through the first vapor channel, and the sewage and wastewater after flash evaporation is discharged out of the evaporator through the sewage and wastewater return pipe.
Description
Technical Field
The invention relates to a direct cooling machine, and belongs to the technical field of waste heat utilization.
Background
In various industrial production, refrigeration is needed to cool certain process sections, buildings are needed to be cooled in summer or hot weather, most of refrigeration equipment used in industrial production with larger cold energy demand and concentrated cooling of the buildings is a lithium bromide absorption refrigerating unit, and the driving heat source of the traditional absorption refrigerating unit is positive pressure steam or high-temperature clean hot water due to the structural limitation of a generator of the traditional absorption refrigerating unit, so that the high-temperature industrial sewage and wastewater cannot be used as the driving heat source; however, there is a large amount of unclean high Wen Wu waste water in industrial production, and the heat in this part of waste water is wasted because of the ineffective use.
Disclosure of Invention
The invention aims to solve the problem that the heat in the sewage and wastewater cannot be effectively utilized because the existing absorption refrigerating unit cannot utilize high-temperature industrial sewage and wastewater as a driving heat source, and further provides a direct cooling machine.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the direct cooling machine comprises a condenser, a generator, an evaporator and an absorber, wherein a first steam channel is arranged between the condenser and the generator,
The generator comprises a lithium bromide solution cavity positioned at the upper part and a flash evaporation chamber positioned below the lithium bromide solution cavity, wherein the upper part of the generator is communicated with a vacuum pump, the inside of the generator is vacuumized through the vacuum pump, the upper part of the lithium bromide solution cavity is communicated with the lower part of the absorber through a dilute lithium bromide solution pipe, the dilute lithium bromide solution in the absorber is conveyed into the lithium bromide solution cavity through the dilute lithium bromide solution pipe, the lower part of the lithium bromide solution cavity is communicated with the upper part of the absorber through a concentrated lithium bromide solution pipe, the concentrated lithium bromide solution formed in the lithium bromide solution cavity is conveyed into the absorber through the concentrated lithium bromide solution pipe, sewage and wastewater are communicated into the flash evaporation chamber through a sewage and wastewater inlet pipe to be subjected to flash evaporation, the steam after flash evaporation moves upwards and exchanges heat with the dilute lithium bromide solution in the lithium bromide solution cavity, the refrigerant water in the dilute lithium bromide solution is heated and evaporated, the evaporated steam enters the condenser through a first steam channel, and the sewage and wastewater after flash evaporation is discharged out of the generator through a sewage and wastewater withdrawal pipe.
Further, a plurality of first heat exchange tubes are arranged in the lithium bromide solution cavity, two ends of each first heat exchange tube are respectively communicated with the outer space of the lithium bromide solution cavity, steam obtained after flash evaporation moves upwards and enters the first heat exchange tubes through one ends of the plurality of first heat exchange tubes, after the steam in the first heat exchange tubes is condensed into water, the water is discharged through the other ends of the first heat exchange tubes, and the steam in the first heat exchange tubes exchanges heat with dilute lithium bromide solution outside the first heat exchange tubes.
Further, the evaporator comprises a refrigerant water sprayer positioned at the upper part, a second heat exchange tube positioned at the middle part and a first refrigerant water pool positioned at the lower part, wherein the inlet and the outlet of the second heat exchange tube are respectively communicated with a refrigeration water return pipe and a refrigeration water supply pipe; the absorber comprises a concentrated lithium bromide solution sprayer positioned at the upper part, a third heat exchange tube positioned at the middle part and a dilute lithium bromide solution tank positioned at the lower part of the absorber, wherein the inlet and the outlet of the third heat exchange tube are respectively communicated with a first water inlet pipe and a first water outlet pipe; the condenser comprises a fourth heat exchange tube positioned at the upper part and a second coolant pool positioned at the lower part, wherein the inlet and the outlet of the fourth heat exchange tube are respectively communicated with a second water inlet pipe and a second water outlet pipe; the first coolant water tank is communicated with the coolant water sprayer through a first coolant water pipe, the second coolant water tank conveys coolant water into the first coolant water tank through a second coolant water pipe, a second steam channel is arranged between the evaporator and the absorber, and steam generated after the coolant water in the evaporator absorbs heat and evaporates enters the absorber through the second steam channel.
Further, a demister is arranged between the lithium bromide solution cavity and the flash chamber.
Further, a condensate trough is arranged on the outer side of the lithium bromide solution cavity and is communicated with the other ends of the first heat exchange tubes.
Further, the outside intercommunication of condensate tank is provided with the condensate pump.
Further, the sewage and wastewater water return pipe is horizontally arranged at the lower part of the flash chamber.
Further, the sewage and wastewater inlet pipe is horizontally arranged and communicated with the upper side wall of the flash chamber.
Further, the sewage and wastewater inlet pipe is vertically arranged, and the bottom end of the sewage and wastewater inlet pipe is positioned in the flash chamber.
Further, the number of the lithium bromide solution cavities is two, the two lithium bromide solution cavities are oppositely arranged on two sides of the sewage and wastewater water inlet pipe, and flash steam enters the lithium bromide solution cavities through one side opposite to the two lithium bromide solution cavities for heat exchange.
Compared with the prior art, the invention has the following effects:
compared with the existing absorption refrigerating unit, the application is not limited to recycling steam or high-temperature clean water as a driving heat source, realizes the recovery refrigeration of waste heat of high-temperature industrial sewage and waste water with corrosiveness, easy deposition and easy scaling, avoids the problems of corrosion, scaling, blockage and the like, and generates huge economic and environmental benefits.
The application can recover clean flash condensed water matched with the residual heat while recovering the residual heat, so that the highly polluted sewage is converted into the clean flash condensed water, and the concentration and decrement of the industrial sewage are realized.
Drawings
FIG. 1 is a schematic diagram of a direct cooling machine according to a first embodiment;
FIG. 2 is a schematic side cross-sectional view of a generator in accordance with one embodiment;
FIG. 3 is a schematic top view of a generator according to one embodiment;
fig. 4 is a schematic structural diagram of a direct cooling machine in the second embodiment;
FIG. 5 is a schematic side cross-sectional view of a generator in a second embodiment;
fig. 6 is a schematic top view of a generator in a second embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, which comprises a condenser 1, a generator 2, an evaporator 3 and an absorber 4, a first steam channel 5 is arranged between the condenser 1 and the generator 2,
The generator 2 comprises a lithium bromide solution cavity 2-1 positioned at the upper part and a flash evaporation chamber 2-2 positioned below the lithium bromide solution cavity 2-1, wherein the upper part of the generator 2 is communicated with a vacuum pump 6, the inside of the generator 2 is vacuumized through the vacuum pump 6, the upper part of the lithium bromide solution cavity 2-1 is communicated with the lower part of the absorber 4 through a dilute lithium bromide solution pipe 7, the dilute lithium bromide solution in the absorber 4 is conveyed into the lithium bromide solution cavity 2-1 through the dilute lithium bromide solution pipe 7, the lower part of the lithium bromide solution cavity 2-1 is communicated with the upper part of the absorber 4 through a concentrated lithium bromide solution pipe 8, the concentrated lithium bromide solution formed in the lithium bromide solution cavity 2-1 is conveyed into the absorber 4 through the concentrated lithium bromide solution pipe 8, sewage and wastewater are flashed into the flash evaporation chamber 2-2 through a sewage water inlet pipe 9, the evaporated steam moves upwards and exchanges heat with the dilute lithium bromide solution in the absorber 4, the evaporated refrigerant water in the dilute lithium bromide solution is heated, and the evaporated steam enters a first steam channel 1 through a condensate channel 10, and the sewage and is discharged out of the sewage water pipe 10.
The sewage and wastewater withdrawal pipe 10 is communicated with a sewage and wastewater discharge pump 11, which is convenient for discharging sewage and wastewater in the flash chamber 2-2.
The generator 2 is kept in a negative pressure state by sucking air through a vacuum pump 6.
The sewage and wastewater inlet pipe 9 is a straight pipe or a conical pipe.
The absorber 4, the evaporator 3 and the condenser 1 of the present application can be constructed and connected in the same manner as the prior art.
Principle of operation of the generator 2 part:
The sewage and wastewater enters the flash chamber 2-2 through the sewage and wastewater water inlet pipe 9, the sewage and wastewater enters the flash chamber 2-2 under the action of the vacuum pump 6, partial sewage and wastewater instantaneously undergoes vaporization flash evaporation, the flash evaporation steam brings heat in the sewage and wastewater, the non-flash evaporation sewage and wastewater is discharged through the sewage and wastewater water outlet pipe 10 and the sewage and wastewater discharge pump 11, the heat carried by the flash evaporation steam moves upwards to pass through the demister 2-4, the demister 2-4 cuts off small liquid drops carried in the steam, then the flash evaporation steam enters the first heat exchange pipe 2-3 from one end of the first heat exchange pipe 2-3, heat exchange is carried out with the dilute lithium bromide solution in the lithium bromide solution cavity, the flash evaporation steam is condensed simultaneously, the condensed water is converged into the condensate tank 2-5, and then discharged through the condensate pump 22, and the refrigerant water in the heated dilute lithium bromide solution is heated to be heated and evaporated, so that the effect of the absorption refrigerating unit generator 2 is completed.
The lithium bromide solution cavity 2-1 is internally provided with a plurality of first heat exchange tubes 2-3, two ends of the plurality of first heat exchange tubes 2-3 are respectively communicated with the external space of the lithium bromide solution cavity 2-1, steam obtained after flash evaporation moves upwards and enters the first heat exchange tubes 2-3 through one ends of the plurality of first heat exchange tubes 2-3, the steam in the first heat exchange tubes 2-3 is condensed into water and then is discharged through the other ends of the first heat exchange tubes 2-3, and the steam in the first heat exchange tubes 2-3 exchanges heat with the dilute lithium bromide solution outside the first heat exchange tubes 2-3. The sewage and wastewater flash evaporation steam enters a tube side, the dilute lithium bromide solution enters a shell side, and heated evaporation occurs outside the tube.
The evaporator 3 comprises a refrigerant water sprayer 3-1 positioned at the upper part, a second heat exchange tube 3-2 positioned at the middle part and a first refrigerant water pool 3-3 positioned at the lower part, wherein the inlet and the outlet of the second heat exchange tube 3-2 are respectively communicated with a refrigerating water return pipe 12 and a refrigerating water supply pipe 13; the absorber 4 comprises a concentrated lithium bromide solution sprayer 4-1 positioned at the upper part, a third heat exchange tube 4-2 positioned at the middle part and a dilute lithium bromide solution pool 4-3 positioned at the lower part of the absorber 4, wherein the inlet and the outlet of the third heat exchange tube 4-2 are respectively communicated with a first water inlet tube 14 and a first water outlet tube 15; the condenser 1 comprises a fourth heat exchange tube 1-1 positioned at the upper part and a second cold water pool 1-2 positioned at the lower part, wherein the inlet and the outlet of the fourth heat exchange tube 1-1 are respectively communicated with a second water inlet tube 16 and a second water outlet tube 17; the first cold water pool 3-3 is communicated with the cold water spray 3-1 through a first cold water pipe 18, the second cold water pool 1-2 conveys cold water into the first cold water pool 3-3 through a second cold water pipe 19, a second steam channel 20 is arranged between the evaporator 3 and the absorber 4, and steam generated after the cold water in the evaporator 3 absorbs heat and evaporates enters the absorber 4 through the second steam channel 20. The first coolant water pipe 18 is provided with a coolant water spray pump 21 for supplying the coolant water in the first coolant water reservoir 3-3 to the coolant water spray 3-1 thereabove.
A demister 2-4 is arranged between the lithium bromide solution cavity 2-1 and the flash chamber 2-2. To remove small droplets entrained in the vapor.
A condensed water tank 2-5 is arranged outside the lithium bromide solution cavity 2-1, and the condensed water tank 2-5 is communicated with the other ends of the first heat exchange tubes 2-3. The vacuum pump 6 is communicated with the upper part of the condensate water tank 2-5. The condensed water formed in the first heat exchange tube 2-3 is collected by the condensed water tank 2-5. The condensate water tank 2-5 may be arranged inside the generator 2 or outside the generator 2 as long as collection of condensate water is enabled.
The outside of the condensate tank 2-5 is communicated with a condensate pump 22. The condensed water in the condensed water tank 2-5 is discharged by the condensed water pump 22.
The sewage and wastewater return pipe 10 is horizontally arranged at the lower part of the flash chamber 2-2.
The sewage and wastewater inlet pipe 9 is horizontally arranged and communicated with the upper side wall of the flash chamber 2-2.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 3 and 4, in which the sewage and wastewater inlet pipe 9 is vertically arranged and its bottom end is located in the flash chamber 2-2. In this state, the sewage and wastewater inlet pipe 9 may pass through the lithium bromide solution chamber 2-1 and enter the flash chamber 2-2, or may be located at one side of the lithium bromide solution chamber 2-1, so long as the steam does not affect the first heat exchange pipe 2-3 in the lithium bromide solution chamber 2-1.
The number of the lithium bromide solution cavities 2-1 is two, the two lithium bromide solution cavities are oppositely arranged at two sides of the sewage and wastewater inlet pipe 9, and flash steam enters the lithium bromide solution cavities 2-1 through one side opposite to the two lithium bromide solution cavities 2-1 for heat exchange.
Other compositions and connection relationships are the same as those of the first embodiment.
And a third specific embodiment: the present embodiment will be described with reference to fig. 1 to 4, in which the sewage and wastewater may be blast furnace slag water, and the sewage and wastewater may be used as a heat source for cooling, and the produced cold water may be used for blast furnace blast cooling to condense water vapor in blast furnace wind, thereby achieving the purpose of blast furnace blast dehumidification. The direct cooling machine can effectively solve the problems of the existing lithium bromide refrigerating unit by utilizing the direct cooling machine, because the lithium bromide refrigerating unit in the prior art can not utilize the waste heat of the slag flushing water to refrigerate, and the part of heat is wasted.
The complete working principle of the direct cooling machine is as follows:
The refrigeration circulating water enters the second heat exchange tube 3-2 in the evaporator 3 through the refrigeration water return pipe 12, the refrigerant water is conveyed by the refrigerant water spray pump 21 to be sprayed to the outside of the second heat exchange tube 3-2 through the first refrigerant water pipe 18, the refrigerant water absorbs the heat of the refrigeration circulating water to be evaporated outside the second heat exchange tube 3-2, the evaporation heat absorption reduces the temperature of the refrigeration circulating water, the cooled refrigeration circulating water is conveyed to a cold-requiring unit through the refrigeration water supply pipe 13, the steam obtained by the heat absorption evaporation of the refrigerant water enters the absorber 4 through the second steam channel 20, the steam is absorbed by the concentrated lithium bromide pump and the concentrated lithium bromide solution pipe 8 in the absorber 4, the concentrated lithium bromide solution is collected to the bottom of the absorber 4 through the first water inlet pipe 14, the heat released by the absorption of the lithium bromide solution is discharged through the first water outlet pipe 15, the dilute lithium bromide solution at the bottom of the absorber 4 is conveyed to the cold-requiring unit through the dilute lithium bromide solution pump and the dilute lithium bromide solution pipe 7, the steam obtained by the dilute lithium bromide solution pipe 2 is conveyed to the absorber 4 through the second steam channel 20, the concentrated lithium bromide solution is conveyed to the second heat exchange tube 1 through the second heat exchange tube 1, the concentrated lithium bromide solution is conveyed to the second heat exchange tube 1 and the water outlet pipe 1, the steam is cooled by the water is discharged to the water heater 1 through the second heat exchange tube 1, the water is cooled by the water pipe 1, the concentrated lithium bromide solution is discharged to the water is cooled by the water 1 and the water is discharged to the water 1 through the second heat pipe 1, the water is cooled by the water pipe 1 and the water is cooled by the water pipe 1, the water is cooled by the condensed by the water 1 and the water is cooled by the water 1, the entire refrigeration cycle is completed.
Claims (9)
1. The utility model provides a direct cooling machine, it includes condenser (1), generator (2), evaporimeter (3) and absorber (4), its characterized in that: a first steam channel (5) is arranged between the condenser (1) and the generator (2),
The generator (2) comprises a lithium bromide solution cavity (2-1) positioned at the upper part and a flash evaporation chamber (2-2) positioned below the lithium bromide solution cavity (2-1), wherein the upper part of the generator (2) is communicated with a vacuum pump (6), the interior of the generator (2) is vacuumized through the vacuum pump (6), the upper part of the lithium bromide solution cavity (2-1) is communicated with the lower part of the absorber (4) through a dilute lithium bromide solution pipe (7), the dilute lithium bromide solution in the absorber (4) is conveyed into the lithium bromide solution cavity (2-1) through the dilute lithium bromide solution pipe (7), the lower part of the lithium bromide solution cavity (2-1) is communicated with the upper part of the absorber (4) through a concentrated lithium bromide solution pipe (8), the concentrated lithium bromide solution formed in the lithium bromide solution cavity (2-1) is conveyed into the absorber (4) through the vacuum pump (6), the sewage water inlet pipe (9) is communicated into the absorber (2-2) for carrying out movement, the steam and the lithium bromide solution are evaporated into the dilute steam evaporator (2-1) through the flash evaporation chamber (2) after evaporating the water vapor and evaporating the steam and the water evaporator (1), the sewage and wastewater after flash evaporation is discharged out of the generator (2) through a sewage and wastewater water outlet pipe (10); a plurality of first heat exchange tubes (2-3) are arranged in the lithium bromide solution cavity (2-1), two ends of the plurality of first heat exchange tubes (2-3) are respectively communicated with the external space of the lithium bromide solution cavity (2-1), steam obtained after flash evaporation moves upwards and enters the first heat exchange tubes (2-3) through one ends of the plurality of first heat exchange tubes (2-3), the steam in the first heat exchange tubes (2-3) is condensed into water, and then is discharged through the other ends of the first heat exchange tubes (2-3), and the steam in the first heat exchange tubes (2-3) exchanges heat with dilute lithium bromide solution outside the first heat exchange tubes (2-3).
2. The direct chill machine of claim 1, wherein: the evaporator (3) comprises a refrigerant water sprayer (3-1) positioned at the upper part, a second heat exchange tube (3-2) positioned at the middle part and a first refrigerant water pool (3-3) positioned at the lower part, wherein the inlet and the outlet of the second heat exchange tube (3-2) are respectively communicated with a refrigeration water return pipe (12) and a refrigeration water supply pipe (13); the absorber (4) comprises a concentrated lithium bromide solution sprayer (4-1) positioned at the upper part, a third heat exchange tube (4-2) positioned at the middle part and a dilute lithium bromide solution tank (4-3) positioned at the lower part of the absorber (4), wherein the inlet and the outlet of the third heat exchange tube (4-2) are respectively communicated with a first water inlet tube (14) and a first water outlet tube (15); the condenser (1) comprises a fourth heat exchange tube (1-1) positioned at the upper part and a second coolant pool (1-2) positioned at the lower part, wherein the inlet and the outlet of the fourth heat exchange tube (1-1) are respectively communicated with a second water inlet tube (16) and a second water outlet tube (17); the first cold water pool (3-3) is communicated with the cold water spray device (3-1) through a first cold water pipe (18), the second cold water pool (1-2) conveys cold water into the first cold water pool (3-3) through a second cold water pipe (19), a second steam channel (20) is formed between the evaporator (3) and the absorber (4), and steam generated after the cold water in the evaporator (3) absorbs heat and evaporates enters the absorber (4) through the second steam channel (20).
3. The direct chill machine of claim 2, wherein: a demister (2-4) is arranged between the lithium bromide solution cavity (2-1) and the flash chamber (2-2).
4. The direct chill machine of claim 1, wherein: a condensation water tank (2-5) is arranged on the outer side of the lithium bromide solution cavity (2-1), and the condensation water tank (2-5) is communicated with the other ends of the first heat exchange tubes (2-3).
5. The direct chill machine of claim 4, wherein: the outside of the condensate tank (2-5) is communicated with a condensate pump (22).
6. The direct chill machine of claim 1,3 or 5, wherein: the sewage and wastewater return pipe (10) is horizontally arranged at the lower part of the flash chamber (2-2).
7. The direct chill machine of claim 6, wherein: the sewage and wastewater inlet pipe (9) is horizontally arranged and communicated with the upper side wall of the flash chamber (2-2).
8. The direct chill machine of claim 6, wherein: the sewage and wastewater inlet pipe (9) is vertically arranged, and the bottom end of the sewage and wastewater inlet pipe is positioned in the flash chamber (2-2).
9. The direct chill machine of claim 8, wherein: the number of the lithium bromide solution cavities (2-1) is two, the two lithium bromide solution cavities are oppositely arranged at two sides of the sewage and wastewater inlet pipe (9), and flash steam enters the lithium bromide solution cavities (2-1) through one side opposite to the two lithium bromide solution cavities (2-1) for heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553588.9A CN111623550B (en) | 2020-06-17 | 2020-06-17 | Direct cooling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010553588.9A CN111623550B (en) | 2020-06-17 | 2020-06-17 | Direct cooling machine |
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| Publication Number | Publication Date |
|---|---|
| CN111623550A CN111623550A (en) | 2020-09-04 |
| CN111623550B true CN111623550B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010553588.9A Active CN111623550B (en) | 2020-06-17 | 2020-06-17 | Direct cooling machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708338A (en) * | 2017-10-25 | 2019-05-03 | 北京华源泰盟节能设备有限公司 | A kind of sewage, seawater vacuum evaporator and absorption heat pump |
| CN112178970B (en) * | 2020-09-30 | 2022-03-08 | 潘庆光 | Method and system for lithium bromide unit and co-production of nitrogen by hydrogen non-combustion method |
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| CN212227430U (en) * | 2020-06-17 | 2020-12-25 | 哈尔滨工大金涛科技股份有限公司 | Direct cooling machine |
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2020
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|---|---|---|---|---|
| CN1124834A (en) * | 1994-12-10 | 1996-06-19 | 徐建中 | Burner |
| JPH10300263A (en) * | 1997-04-24 | 1998-11-13 | Mitsubishi Heavy Ind Ltd | Absorption refrigerator |
| CN104101129A (en) * | 2014-07-25 | 2014-10-15 | 中能服(北京)节能投资有限公司 | External heat-exchange heat pump |
| CN110542239A (en) * | 2019-09-19 | 2019-12-06 | 双良节能系统股份有限公司 | Single-double effect composite evaporation-absorption two-section direct combustion type first-class lithium bromide absorption heat pump unit |
| CN212227430U (en) * | 2020-06-17 | 2020-12-25 | 哈尔滨工大金涛科技股份有限公司 | Direct cooling machine |
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