CN221122572U - System for producing steam and cold water by using waste heat of second-class heat pump - Google Patents
System for producing steam and cold water by using waste heat of second-class heat pump Download PDFInfo
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- CN221122572U CN221122572U CN202322941836.9U CN202322941836U CN221122572U CN 221122572 U CN221122572 U CN 221122572U CN 202322941836 U CN202322941836 U CN 202322941836U CN 221122572 U CN221122572 U CN 221122572U
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- cold water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 239000002918 waste heat Substances 0.000 title claims abstract description 20
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 146
- 238000001816 cooling Methods 0.000 claims abstract description 49
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 46
- 239000006096 absorbing agent Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 14
- 238000004821 distillation Methods 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 7
- 238000004544 sputter deposition Methods 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model discloses a system for preparing steam and cold water by using waste heat of a second-class heat pump, which relates to the technical field of alkane preparation and comprises the following steps: the device comprises an alkane preparation unit, a lithium bromide refrigerator and a second-class heat pump, wherein a gas outlet of a gas-liquid separation tank of the alkane preparation unit is communicated with a heat source inlet of the lithium bromide refrigerator, a circulating water outlet of a water-cooling heat exchanger of the alkane preparation unit is respectively communicated with an evaporator heat source inlet and a generator heat source inlet of the second-class heat pump, a cold water outlet of the lithium bromide refrigerator is communicated with an external supply pipeline, and a water outlet of an absorber of the second-class heat pump is communicated with a flash tank; in the utility model, gaseous alkane enters the lithium bromide refrigerator, the lithium bromide refrigerator utilizes the heat in the gaseous alkane to produce cold water, the circulating water with higher temperature flowing out of the water-cooling heat exchanger enters the second-class heat pump, and the circulating water enters the flash tank to generate high temperature water and steam through the heat transfer of the second-class heat pump, so that the energy utilization rate is improved.
Description
Technical Field
The utility model relates to the technical field of alkane preparation, in particular to a system for preparing steam and cold water by using waste heat of a second-class heat pump.
Background
Along with the progress of low-carbon technology, the petrochemical industry is developed towards the directions of adopting new technology, saving energy, optimizing production operation, comprehensively utilizing raw materials, extending downstream products and the like, the energy saving is a long-term strategic plan for economic development of China, and is an urgent task at present, the whole society is developing energy saving and consumption reduction, relieving energy pressure, building an energy-saving society, and the recycling of industrial waste heat resources is an important measure for saving energy, and in the aspect of petrochemical industry, the national continental discharge policy is developing recombination and integration in the industry, the admission threshold of the industry is improved, the technical innovation in the industry is encouraged, the obsolete productivity is quickened, the enterprise is encouraged to optimize the process production flow, the comprehensive utilization level of resources is improved, and the technological content and the added value of the products are improved.
In the project of preparing alkane in petrochemical industry, generally, a water-cooling heat exchanger is adopted to cool a mixture of alkane and steam generated by a distillation generating tower through water (the mixture is cooled to a temperature at which the steam is condensed into water and the alkane is evaporated), then gaseous alkane and steam condensate are separated by a gas-liquid separation tank through the difference of boiling points of all pure substances (such as water), and the gaseous alkane is continuously cooled to liquid state through cooling water or air by a cooling tower in order to meet the process refrigeration requirement, but the heat of the alkane cooling process is discharged to the natural environment in a white mode, and higher energy consumption exists.
Therefore, a second-class heat pump steam generating system with high energy utilization rate by utilizing waste heat is needed.
Disclosure of Invention
The utility model aims to provide a system for preparing steam and cold water by using waste heat of a second-class heat pump, which is used for solving the problems in the prior art, a lithium bromide refrigerator is used for preparing cold water by using heat of gaseous alkane, and the second-class heat pump is used for preparing steam and high temperature water by using the water outlet temperature of a water cooling heat exchanger, so that the utilization of heat in the gaseous alkane is realized, and the energy utilization rate is improved.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a system for producing steam and cold water by using waste heat of a second-class heat pump, which comprises an alkane preparation unit, a lithium bromide refrigerator and the second-class heat pump, wherein a gas outlet of a gas-liquid separation tank of the alkane preparation unit is communicated with a heat source inlet of the lithium bromide refrigerator, a heat source outlet of the lithium bromide refrigerator is communicated with a condensation tank, a circulating water outlet of a water cooling heat exchanger of the alkane preparation unit is respectively communicated with an evaporator heat source inlet and a generator heat source inlet of the second-class heat pump, both the evaporator heat source outlet and the generator heat source outlet of the second-class heat pump are communicated with the circulating water inlet of the water cooling heat exchanger, a cold water outlet of the lithium bromide refrigerator is communicated with an external supply pipeline for supplying cold water to the outside, a water inlet of an absorber of the second-class heat pump is communicated with a water source through a pressurizing pump, and a water outlet of the absorber of the second-class heat pump is communicated with a flash tank for generating steam and storing high-temperature hot water.
Preferably, the cold water outlet of the lithium bromide refrigerator is communicated with the cold water inlet of the condenser of the second-class heat pump through a branch pipeline, and the cold water outlet of the condenser of the second-class heat pump is communicated with the cold water inlet of the lithium bromide refrigerator through a delivery pump.
Preferably, the gas outlet of the gas-liquid separation tank is communicated with the inlet of the air cooling tower through a branch pipeline, the outlet of the air cooling tower is communicated with the condensing tank, a first valve which is only started when the lithium bromide refrigerator is stopped is arranged on the branch pipeline, and a second valve which is only closed when the lithium bromide refrigerator is stopped is arranged on the gas outlet of the gas-liquid separation tank and the main pipeline of the lithium bromide refrigerator.
Preferably, the cooling water inlet of the lithium bromide refrigerator is communicated with the cooling tower through a cold water pump, and the cooling water outlet of the lithium bromide refrigerator is communicated with the cooling tower.
Preferably, the water inlet of the booster pump is communicated with the flash tank.
Preferably, a water supplementing pipeline for supplementing a water source is arranged between the pressurizing pump and the flash tank, and a water supplementing pump is arranged on the water supplementing pipeline.
Preferably, the alkane preparation unit comprises a distillation generating tower, a water-cooling heat exchanger and a gas-liquid separation tank which are sequentially communicated, a steam inlet and a mixture inlet are arranged on the distillation generating tower, a rubber powder mixture outlet is arranged at the bottom of the distillation generating tower, and a steam condensate outlet is arranged at the bottom of the gas-liquid separation tank.
Preferably, an emergency bypass is arranged between the distillation generating tower and the water-cooling heat exchanger, a bypass valve is arranged on the emergency bypass, and an air outlet of the emergency bypass is communicated with a heat source inlet of the lithium bromide refrigerator.
Preferably, the second-class heat pump comprises an evaporator, a generator, an absorber and a condenser, heat source heat exchange pipelines are arranged in the generator and the evaporator, evaporative water heat exchange pipelines are arranged in the absorber, cold water heat exchange pipelines are arranged in the condenser, the bottom of a cavity of the generator is a containing space for containing lithium bromide solution, the containing space is communicated with the absorber through a solution pump and spraying equipment corresponding to the arrangement of the evaporative water heat exchange pipelines, the spraying equipment corresponds to the arrangement of the evaporative water heat exchange pipelines, the bottom of an inner cavity of the absorber is communicated with the generator through spraying equipment corresponding to the arrangement of the heat source heat exchange pipelines, the bottom of the inner cavity of the condenser is communicated with the evaporator through a refrigerant pump and spraying equipment, the spraying equipment corresponds to the arrangement of the heat source heat exchange pipelines, the inner cavity of the evaporator is communicated with the inner cavity of the absorber, and the top of the inner cavity of the generator is communicated with the top of the inner cavity of the condenser.
Preferably, a plurality of vertically arranged splash-proof plates for preventing spray sputtering are arranged at the communication channels of the evaporator and the absorber.
Compared with the prior art, the utility model mainly achieves the following technical effects:
The gaseous alkane enters a lithium bromide refrigerator, the lithium bromide refrigerator utilizes the heat in the gaseous alkane to produce cold water, and the produced cold water can be used outside, so that the energy utilization rate is improved; after the circulating water with higher temperature flowing out of the water-cooling heat exchanger enters an evaporator and a generator of the second-class heat pump, the circulating water exchanges heat with the refrigerant water and the lithium bromide solution in the second-class heat pump respectively, the gaseous alkane after heat exchange is cooled to be in a liquid state and enters a condensing tank to be collected, the heat of the gaseous alkane is transmitted to the water flowing in the absorber through the heat transfer of the second-class heat pump, the high temperature water enters a flash tank to decompress a part for evaporation, and the other part is stored, so that the utilization of the heat in the circulating water after heat exchange with the gaseous alkane is realized, and the energy utilization rate is further improved; in addition, the lithium bromide refrigerator not only effectively utilizes the heat of gaseous alkane, but also replaces an air cooling tower in the normal working stage, thereby reducing the power consumption of the air cooling tower and improving the economical efficiency of the system operation.
Compared with the prior art, the other schemes of the utility model have the following technical effects:
part of cold water generated by the lithium bromide refrigerator is used as cold water for cooling the second-class heat pump, other equipment for supplying cold water is not needed to supply cold water for the second-class heat pump, and energy is saved.
The emergency bypass is opened when the water-cooled heat exchanger and the gas-liquid separation tank are overhauled or maintained, gaseous alkane is directly supplied into the lithium bromide refrigerator, and the distillation generating tower can work normally at the moment, so that the working efficiency of the distillation generating tower is improved.
The air cooling tower can be started to be used when the lithium bromide refrigerator is stopped for overhauling or maintaining, and at the moment, the distillation generating tower can work normally, so that the working efficiency of the distillation generating tower is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for producing steam and cold water from waste heat using a second type heat pump according to the present utility model;
wherein, 1, a distillation generating tower; 2. a steam inlet; 3. a mixture inlet; 4. a rubber powder mixture outlet; 5. a water-cooled heat exchanger; 6. a gas-liquid separation tank; 7. a steam condensate outlet; 8. a lithium bromide refrigerator; 9. a cooling tower; 10. a cold water pump; 11. an air cooling tower; 12. a first valve; 13. a second valve; 14. a condensing tank; 15. a transfer pump; 16. a second class heat pump; 17. an evaporator; 18. an absorber; 19. a generator; 20. a condenser; 21. a solution pump; 22. a refrigerant pump; 23. a spraying device; 24. a flash tank; 25. a pressurizing pump; 26. a water supplementing pump; 27. an emergency bypass; 28. a bypass valve; 29. and an external supply pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a system for preparing steam and cold water by using waste heat of a second-class heat pump, which is used for solving the problems in the prior art, a lithium bromide refrigerator is used for preparing cold water by using heat of gaseous alkane, and the second-class heat pump is used for preparing steam and high-temperature water by using the water outlet temperature of a water-cooling heat exchanger, so that the utilization of heat in the gaseous alkane is realized, and the energy utilization rate is improved.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1, there is provided a system for producing steam and cold water by using waste heat of a second-class heat pump, which comprises an alkane preparation unit, a lithium bromide refrigerator 8 and a second-class heat pump 16, wherein the alkane preparation unit comprises a distillation generating tower 1, a water-cooling heat exchanger 5 and a gas-liquid separating tank 6 which are sequentially communicated, the distillation generating tower 1 is provided with a steam inlet 2 and a mixture inlet 3, the bottom of the distillation generating tower 1 is provided with a rubber powder mixture outlet 4, the bottom of the gas-liquid separating tank 6 is provided with a steam condensate outlet 7, the gas outlet of the gas-liquid separating tank 6 of the alkane preparation unit is communicated with a heat source inlet of the lithium bromide refrigerator 8, the heat source outlet of the lithium bromide refrigerator 8 is communicated with a condensing tank 14, the cooling water inlet of the lithium bromide refrigerator 8 is communicated with a cooling tower 9 through a cold water pump 10, the cooling water outlet of the lithium bromide refrigerator 8 is communicated with the cooling tower 9, the circulating water outlet of the water-cooling heat exchanger 5 of the alkane preparation unit is respectively communicated with the heat source inlet of the evaporator 17 and the heat source inlet of the generator 19 of the second-class heat pump 16 through a water pump, the heat source outlet of the evaporator 17 and the heat source outlet of the generator 19 of the second-class heat pump 16 are both communicated with the circulating water inlet of the water-cooling heat exchanger 5, the cold water outlet of the lithium bromide refrigerator 8 is communicated with an external supply pipeline 29, the external supply pipeline 29 is used for supplying cold water to the outside, the system can be particularly used for cooling buildings and other process production cold, the water inlet of the absorber 18 of the second-class heat pump 16 is communicated with a water source through a booster pump 25, and the water outlet of the absorber 18 of the second-class heat pump 16 is communicated with a flash tank 24 for generating steam and storing high-temperature hot water, and the principle and effect applied by the system are as follows: the gaseous alkane enters the lithium bromide refrigerator 8, the lithium bromide refrigerator 8 utilizes the heat in the gaseous alkane to produce cold water, and the produced cold water can be used outside, so that the energy utilization rate is improved; after the circulating water with higher temperature flowing out of the water-cooling heat exchanger 5 enters the evaporator 17 and the generator 19 of the second-class heat pump 16, the circulating water exchanges heat with the refrigerant water and the lithium bromide solution in the second-class heat pump 16 respectively, the gaseous alkane after heat exchange is cooled to be in a liquid state and enters the condensation tank 14 to be collected, the heat of the gaseous alkane is transferred to the water flowing in the absorber 18 through the heat transfer of the second-class heat pump 16, part of the reduced pressure of the high-temperature water enters the flash tank 24 to be evaporated, and the other part of the high-temperature water is stored, so that the utilization of the heat in the circulating water after heat exchange with the gaseous alkane is realized, and the energy utilization rate is further improved; in addition, the lithium bromide refrigerator 8 not only effectively utilizes the heat of gaseous alkane, but also replaces the air cooling tower 11 in the normal working stage, thereby reducing the power consumption of the air cooling tower 11 and improving the economical efficiency of system operation.
The heat of the gaseous alkane enters the lithium bromide refrigerator 8, the refrigerating capacity of the gaseous alkane is higher, more cold water is generated, at the moment, the cold water outlet of the lithium bromide refrigerator 8 is communicated with the cold water inlet of the condenser 20 of the second-class heat pump 16 through a branch pipeline, the cold water outlet of the condenser 20 of the second-class heat pump 16 is communicated with the cold water inlet of the lithium bromide refrigerator 8 through the delivery pump 15, part of cold water generated by the lithium bromide refrigerator 8 is used as cooling cold water required by the second-class heat pump 16, other equipment for supplying cold water is not needed to supply cold water for the second-class heat pump 16, and energy is saved.
The gas outlet of gas-liquid separation jar 6 is linked together through the import of branch pipeline and air cooling tower 11, the export of air cooling tower 11 is linked together with condensation tank 14, be provided with first valve 12 on the branch pipeline, the gas outlet of gas-liquid separation jar 6 is provided with second valve 13 with the main pipeline of lithium bromide refrigerator 8, first valve 12 starts only when lithium bromide refrigerator 8 stops operating, second valve 13 only closes when lithium bromide refrigerator 8 stops operating, make air cooling tower 11 can start to use when lithium bromide refrigerator 8 stops operating and overhauls or maintains, distillation generating tower 1 can normally work this moment, improve the work efficiency of distillation generating tower 1.
When the air pressure in the flash tank 24 is low and the high-temperature and high-pressure water enters the flash tank 24 to generate a steaming event, the water inlet of the pressurizing pump 25 can be communicated with the flash tank 24 because the high-temperature and high-pressure water does not completely evaporate after entering the flash tank 24, so that the recycling of the part of water is realized.
Because the water in the flash tank 24 is evaporated and the water amount is gradually reduced, a water supplementing pipeline for supplementing water source is arranged between the booster pump 25 and the flash tank 24, and a water supplementing pump 26 is arranged on the water supplementing pipeline, and the water inlet of the water supplementing pump 26 is communicated with an external water tank.
The external water tank can be a solar water heater, and the solar water heater can be used for heating the supplied water in advance, so that the water temperature of the water flowing out of the absorber 18 can be correspondingly increased, and more steam can be generated.
An emergency bypass 27 is arranged between the distillation generating tower 1 and the water-cooling heat exchanger 5, a bypass valve 28 is arranged on the emergency bypass 27, an air outlet of the emergency bypass 27 is communicated with a heat source inlet of the lithium bromide refrigerator 8, the emergency bypass 27 is opened when the water-cooling heat exchanger 5 and the gas-liquid separation tank 6 are overhauled or maintained, gaseous alkane is directly supplied into the lithium bromide refrigerator 8, the distillation generating tower 1 can work normally at the moment, the working efficiency of the distillation generating tower 1 is improved, and the bypass valve 28 is in a normally closed state when the water-cooling heat exchanger 5 and the gas-liquid separation tank 6 work normally.
The specific structure of the second-class heat pump 16 comprises an evaporator 17, a generator 19, an absorber 18 and a condenser 20, wherein heat source heat exchange pipelines are arranged in the generator 19 and the evaporator 17, evaporation water heat exchange pipelines are arranged in the absorber 18, cold water heat exchange pipelines are arranged in the condenser 20, the bottom of a cavity of the generator 19 is a containing space for containing lithium bromide solution, the containing space is communicated with the absorber 18 through a solution pump 21 and a spraying device 23 corresponding to the evaporation water heat exchange pipelines, the spraying device 23 is corresponding to the evaporation water heat exchange pipelines, the bottom of an inner cavity of the absorber 18 is communicated with the generator 19 through a spraying device 23, the spraying device 23 is corresponding to the heat source heat exchange pipelines, the bottom of an inner cavity of the condenser 20 is communicated with the evaporator 17 through a refrigerant pump 22 and a spraying device 23, the inner cavity of the evaporator 17 is communicated with the inner cavity of the absorber 18, and the top of the inner cavity of the generator 19 is communicated with the top of the inner cavity of the condenser 20.
The communication channel department of evaporimeter 17 and absorber 18 is provided with the anti-sputtering board that prevents spraying and sputtering that a plurality of vertically arranged, adjacent anti-sputtering board interval sets up, and the interval region is vapor channel, and anti-sputtering board can be straight plate shape or reverse V shape, and when adopting straight plate shape, a plurality of anti-sputtering board slope sets up, and higher one end is close to absorber 18 setting, because the evaporation of spray water heat absorption in the evaporimeter 17 produces vapor and can flow towards absorber 18, this flow air current can play the lithium bromide solution that prevents to spray in the absorber 18 and sputter in the evaporimeter 17, adopts reverse V shape then can realize both sides protection.
The heat in the circulating water after heat exchange with gaseous alkane is utilized in the second-class heat pump 16 according to the following principle: circulating water enters a heat source heat exchange pipeline in the generator 19 to exchange heat with the sprayed lithium bromide solution, the lithium bromide solution generates water vapor and lithium bromide concentrated solution after being heated in the generator 19, the lithium bromide concentrated solution is conveyed into the absorber 18 by the solution pump 21 to exchange heat with an evaporation water heat exchange pipeline, and water in the evaporation water heat exchange pipeline is heated and enters the flash tank 24; the water vapor generated in the generator 19 enters the condenser 20 to exchange heat with cold water in the cold water heat exchange pipeline, the water vapor is condensed and conveyed to the evaporator 17 by the refrigerant pump 22 to exchange heat with circulating water in the heat exchange pipeline of the heat source in the evaporator 17, and the generated water vapor enters the absorber 18 to exchange heat with the water heat exchange channel together with the lithium bromide concentrated solution and then is mixed with the lithium bromide concentrated solution to form lithium bromide dilute solution to be sprayed into the generator 19.
Taking n-hexane as an example: the normal hexane and rubber powder mixture enters a distillation generating tower 1, gaseous normal hexane and steam mixed gas is separated after steam heating, the temperature of the gas phase before the gas phase is discharged out of the tower is 105 ℃,0.1MPa.g, the rubber powder mixture returns to the original process for recycling, the temperature of the rubber powder mixture after the gas phase is discharged out of the tower is reduced to 85 ℃ (to be 69 ℃ higher than the boiling point of the normal hexane) through a water cooling heat exchanger 5, the rubber powder mixture enters a gas-liquid separation tank 6, liquid water and gaseous normal hexane are separated, then the gaseous normal hexane is driven to enter a lithium bromide cooler, and then the normal hexane which is condensed into liquid 65 ℃ (to be 69 ℃ lower than the boiling point of the normal hexane) enters a condensation tank 14.
The first produced substance of the lithium bromide cooler, namely 7 ℃ cold water, is used as cooling cold water (the rest cold water is externally supplied) required by the second-class heat pump 16, and the second produced substance, namely liquid normal hexane, enters the condensing tank 14; the circulating water of the water-cooling heat exchanger 5 with the temperature of 95 ℃ (higher than 80 ℃) is connected with the lithium bromide absorption type II heat pump 16, the circulating water is used as a waste heat source to enter the evaporator 17 and the generator 19 of the type II heat pump 16 respectively, and the output materials of the type II heat pump 16 and the flash tank 24 are 147 ℃,0.35MPa.g steam or 147 ℃ high-temperature hot water.
The adaptation to the actual need is within the scope of the utility model.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (10)
1. The system is characterized by comprising an alkane preparation unit, a lithium bromide refrigerator and a second-class heat pump, wherein a gas outlet of a gas-liquid separation tank of the alkane preparation unit is communicated with a heat source inlet of the lithium bromide refrigerator, a heat source outlet of the lithium bromide refrigerator is communicated with a condensation tank, a circulating water outlet of a water cooling heat exchanger of the alkane preparation unit is respectively communicated with an evaporator heat source inlet and a generator heat source inlet of the second-class heat pump, both the evaporator heat source outlet and the generator heat source outlet of the second-class heat pump are communicated with a circulating water inlet of the water cooling heat exchanger, a cold water outlet of the lithium bromide refrigerator is communicated with an external supply pipeline for externally supplying cold water, a water inlet of an absorber of the second-class heat pump is communicated with a water source through a pressurizing pump, and a water outlet of the absorber of the second-class heat pump is communicated with a flash tank for generating steam and storing high-temperature hot water.
2. The system for producing steam and cold water by utilizing waste heat according to claim 1, wherein the cold water outlet of the lithium bromide refrigerator is communicated with the cold water inlet of the condenser of the second heat pump through a branch pipeline, and the cold water outlet of the condenser of the second heat pump is communicated with the cold water inlet of the lithium bromide refrigerator through a delivery pump.
3. The system for producing steam and cold water by utilizing waste heat according to claim 1, wherein a gas outlet of the gas-liquid separation tank is communicated with an inlet of an air cooling tower through a branch pipeline, an outlet of the air cooling tower is communicated with the condensing tank, a first valve which is only started when the lithium bromide refrigerator is stopped is arranged on the branch pipeline, and a second valve which is only closed when the lithium bromide refrigerator is stopped is arranged on a gas outlet of the gas-liquid separation tank and a main pipeline of the lithium bromide refrigerator.
4. The system for producing steam and cold water by utilizing waste heat according to claim 1, wherein the cooling water inlet of the lithium bromide refrigerator is communicated with a cooling tower through a cold water pump, and the cooling water outlet of the lithium bromide refrigerator is communicated with the cooling tower.
5. The two-class heat pump vapor and cold water system utilizing waste heat according to claim 1, wherein the water inlet of the booster pump is in communication with the flash tank.
6. The system for producing steam and cold water by utilizing waste heat according to claim 5, wherein a water supplementing pipeline for supplementing water source is arranged between the pressurizing pump and the flash tank, and a water supplementing pump is arranged on the water supplementing pipeline.
7. The system for producing steam and cold water by utilizing waste heat according to claim 1, wherein the alkane preparation unit comprises a distillation generating tower, a water-cooling heat exchanger and the gas-liquid separation tank which are sequentially communicated, a steam inlet and a mixture inlet are arranged on the distillation generating tower, a rubber powder mixture outlet is arranged at the bottom of the distillation generating tower, and a steam condensate outlet is arranged at the bottom of the gas-liquid separation tank.
8. The system for producing steam and cold water by utilizing waste heat according to claim 7, wherein an emergency bypass is arranged between the distillation generating tower and the water-cooling heat exchanger, a bypass valve is arranged on the emergency bypass, and an air outlet of the emergency bypass is communicated with a heat source inlet of the lithium bromide refrigerator.
9. The system for producing steam and cold water by utilizing waste heat according to claim 1, wherein the two-class heat pump comprises an evaporator, a generator, an absorber and a condenser, heat source heat exchange pipelines are arranged in the generator and the evaporator, evaporation water heat exchange pipelines are arranged in the absorber, cold water heat exchange pipelines are arranged in the condenser, the bottom of a cavity of the generator is a containing space for containing lithium bromide solution, the containing space is communicated with the absorber through a solution pump and spraying equipment corresponding to the evaporation water heat exchange pipelines, the spraying equipment is corresponding to the evaporation water heat exchange pipelines, the bottom of an inner cavity of the absorber is communicated with the generator through spraying equipment, the spraying equipment is corresponding to the heat source heat exchange pipelines, the bottom of an inner cavity of the condenser is communicated with the evaporator through a refrigerant pump and spraying equipment, the spraying equipment is corresponding to the heat source heat exchange pipelines, the inner cavity of the evaporator is communicated with the inner cavity of the absorber, and the top of the evaporator is communicated with the top of the inner cavity of the evaporator.
10. The system for producing steam and cold water by utilizing waste heat according to claim 9, wherein a plurality of vertically arranged splash-proof plates for preventing spray sputtering are arranged at the communication channels of the evaporator and the absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322941836.9U CN221122572U (en) | 2023-10-31 | 2023-10-31 | System for producing steam and cold water by using waste heat of second-class heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322941836.9U CN221122572U (en) | 2023-10-31 | 2023-10-31 | System for producing steam and cold water by using waste heat of second-class heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221122572U true CN221122572U (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322941836.9U Active CN221122572U (en) | 2023-10-31 | 2023-10-31 | System for producing steam and cold water by using waste heat of second-class heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221122572U (en) |
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2023
- 2023-10-31 CN CN202322941836.9U patent/CN221122572U/en active Active
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