CN220379635U - Organic Rankine cycle system with spray type evaporator - Google Patents
Organic Rankine cycle system with spray type evaporator Download PDFInfo
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- CN220379635U CN220379635U CN202321066362.1U CN202321066362U CN220379635U CN 220379635 U CN220379635 U CN 220379635U CN 202321066362 U CN202321066362 U CN 202321066362U CN 220379635 U CN220379635 U CN 220379635U
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- 239000007921 spray Substances 0.000 title claims abstract description 54
- 238000005507 spraying Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 241000521257 Hydrops Species 0.000 claims description 2
- 206010030113 Oedema Diseases 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 18
- 238000001704 evaporation Methods 0.000 abstract description 13
- 230000008020 evaporation Effects 0.000 abstract description 9
- 239000002918 waste heat Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses an organic Rankine cycle system with a spray evaporator, which comprises a spray evaporator, wherein the spray evaporator comprises a cylindrical shell, a heat exchange tube bundle and spray pipelines, the heat exchange tube bundle and the spray pipelines are arranged in the shell, a steam outlet and a effusion outlet which are communicated with the interior of the heat exchange tube bundle are respectively arranged at the upper part and the lower part of the shell, the heat exchange tube bundle is arranged near the axis of the shell along the axis direction parallel to the shell, a plurality of spray pipelines are sequentially arranged below the heat exchange tube bundle at intervals along the axis direction of the shell, the spray pipelines are perpendicular to the axis of the shell, a plurality of working medium nozzles communicated with the interior of the spray pipelines are sequentially arranged on each spray pipeline at intervals along the length direction of the spray pipelines, and the working medium nozzles face the heat exchange tube bundle. The advantages are that: the flow of the liquid working medium is controlled through the working medium nozzle, so that the evaporation pressure can be controlled, the energy in the heat source can be utilized to the greatest extent, the generator set can be ensured to work at the optimal point all the time, and the generating efficiency of the generator set is improved.
Description
Technical Field
The utility model relates to the technical field of waste heat utilization, in particular to an organic Rankine cycle system with a spray type evaporator.
Background
Along with the continuous progress of social progress and scientific technology, the energy consumption required in life production is gradually increased, and the current main use of human energy is that petroleum, natural gas, coal mine and the like do not regenerate resources, the continuous consumption is not a long term, and the resource use process causes higher environmental burden. Therefore, residual heat utilization in various chemical plants is a necessary trend for energy utilization. The chemical production process can generate a large amount of waste gas waste heat, and a large amount of heat energy contained in the waste gas cannot be fully utilized and discharged, so that resources are paved and the environment is also harmed.
Traditional ORC (organic Rankine cycle power generation) systems utilize low-temperature waste heat resources as heat sources for subsequent operation of the ORC systems, but instability of the low-temperature waste heat resources also causes the problem of unstable power generation of the systems. Due to the characteristics of low taste, instability and the like of the heat source, the evaporation pressure of the working medium in the ORC system also fluctuates, so that the change of the generated energy is extremely large.
The prior solution adopts preheating and evaporating to exchange heat twice, so that a heat source firstly exchanges heat from an evaporator and then enters the preheater to exchange heat, however, by adopting the method, the project construction cost can be high, and the phase change condition of working media can be fully considered on the heat exchanger selection, so that the volume difference between the preheater and the evaporator is too large, the traditional evaporating heat exchange system is too complicated, the traditional evaporating heat exchange system can be very troublesome in site construction and can not be used as a skid-mounted whole, and the heat exchange system can not control the evaporating temperature in the later stage, thereby the generating capacity is unstable.
The prior ORC system mainly adopts a flooded evaporator, the basic working mode is that the inside and outside reinforced heat exchange tubes of the evaporator are immersed in working medium liquid, and the working medium absorbs heat in the heat exchange tubes and evaporates, and boiling heat exchange is carried out. Because the liquid refrigeration static pressure exists in the flooded evaporator, the pressure of the liquid refrigerant at the bottom is higher, and the corresponding saturated vapor temperature of the refrigerant is higher, so that the heat transfer temperature difference is reduced, and the heat transfer performance of the flooded evaporator is reduced.
Disclosure of Invention
The object of the present utility model is to provide an organic rankine cycle system with a spray evaporator, which solves the aforementioned problems of the prior art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an organic Rankine cycle system with spray evaporator, includes spray evaporator, spray evaporator is including being cylindric casing and setting and be in heat exchange tube bank and the spray pipeline of casing inside, upper portion and the lower part of casing are provided with respectively with its inside steam export and hydrops export of intercommunication, heat exchange tube bank is along being on a parallel with the axis direction setting of casing is in near the axis of casing, the below of heat exchange tube bank is followed the axis direction interval in proper order of casing is provided with a plurality of spray pipelines, spray pipeline perpendicular to the axis of casing, each spray pipeline is last to be provided with a plurality of and its inside intercommunication working medium nozzle along its length direction interval in proper order, the working medium nozzle orientation heat exchange tube bank.
Preferably, the heat exchange tube bundle comprises a plurality of heat exchange tube groups stacked from top to bottom, and each heat exchange tube group comprises a plurality of heat exchange tubes which are sequentially and adjacently arranged along the direction perpendicular to the axis of the shell.
Preferably, the heat exchange tube bundle comprises an upper heat exchange tube bundle and a lower heat exchange tube bundle which are respectively positioned above and below the axis of the shell, and the upper heat exchange tube bundle and the lower heat exchange tube bundle both comprise a plurality of heat exchange tube groups which are stacked from top to bottom; the number of heat exchange tubes contained in each layer of heat exchange tube group in the upper heat exchange tube bundle is gradually increased from top to bottom, and the number of heat exchange tubes contained in each layer of heat exchange tube group in the lower heat exchange tube bundle is gradually decreased from top to bottom.
Preferably, the system further comprises a working medium turbine expander, a working medium circulating pump and a condenser; the working medium outlet of the working medium turbine expander is connected with the working medium inlet of the condenser through a first working medium pipeline, the working medium outlet of the condenser is connected with the working medium inlet of the working medium circulating pump through a second working medium pipeline, the working medium outlet of the working medium circulating pump is connected with the spraying pipeline through a third working medium pipeline, the vapor outlet is connected with the working medium inlet of the working medium turbine expander through a fourth working medium pipeline, and the effusion outlet is connected with the second working medium pipeline through a fifth working medium pipeline.
The beneficial effects of the utility model are as follows: 1. the whole ORC system adopts a spray type heat exchanger, has the characteristics of convenience in field arrangement, simple internal structure, controllable evaporation pressure and the like, and can effectively solve the problems encountered by the traditional evaporation system. 2. The working medium enters the spray pipeline at the bottom of the evaporator through the working medium circulating pump, and the working medium is changed into mist water drops through the working medium nozzle, so that the heat exchange area can be greatly increased, the heat exchange efficiency is improved, and the volume of the evaporator is reduced. 3. The flow of the liquid working medium is controlled through the working medium nozzle, so that the evaporation pressure can be controlled, the energy in the heat source can be utilized to the greatest extent, the generator set can be ensured to work at the optimal point all the time, and the generating efficiency of the generator set is improved. 4. The accumulated liquid in the shell can be conveyed to the spraying pipeline through the working medium circulating pump again and sprayed onto the heat exchange tube bundle, so that the liquid working medium is completely evaporated.
Drawings
FIG. 1 is a schematic view of a spray evaporator in accordance with an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an organic rankine cycle system with a spray evaporator according to an embodiment of the utility model.
In the figure: 1. a housing; 2. a vapor outlet; 3. a liquid accumulation outlet; 4. a heat exchange tube bundle; 5. a spray pipe; 6. a working medium nozzle; 7. a working medium turbine expander; 8. a condenser; 9. a working medium circulating pump; 10. spray type evaporator.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.
As shown in fig. 1, in this embodiment, an organic rankine cycle system with a spray evaporator is provided, including a spray evaporator 10, the spray evaporator 10 includes a cylindrical shell 1, a heat exchange tube bundle 4 and a spray pipe 5 disposed inside the shell 1, a vapor outlet 2 and a liquid accumulation outlet 3 which are respectively disposed at the upper and lower parts of the shell 1 and are communicated with the interior of the shell, the heat exchange tube bundle 4 is disposed near the axis of the shell 1 along an axis direction parallel to the shell 1, a plurality of spray pipes 5 are sequentially disposed at intervals below the heat exchange tube bundle 4 along the axis direction of the shell 1, the spray pipes 5 are perpendicular to the axis of the shell 1, a plurality of working medium nozzles 6 are sequentially disposed at intervals on each spray pipe 5 along the length direction of the spray pipe, and the working medium nozzles 6 face the heat exchange tube bundle 4.
In this embodiment, the number of the spray pipes 5 and the distance between them may be set according to the actual situation so as to better satisfy the actual requirements.
In this embodiment, the heat exchange tube bundle 4 includes a plurality of heat exchange tube groups stacked from top to bottom, and each heat exchange tube group includes a plurality of heat exchange tubes sequentially disposed adjacent to each other along a direction perpendicular to the axis of the housing 1. The number of the heat exchange tubes can be set according to actual conditions so as to better meet actual demands.
Referring to fig. 1, in this embodiment, the heat exchange tube bundle 4 includes an upper heat exchange tube bundle and a lower heat exchange tube bundle, which are respectively located above and below the axis of the shell 1, and each of the upper heat exchange tube bundle and the lower heat exchange tube bundle includes a plurality of heat exchange tube groups stacked from top to bottom; the number of heat exchange tubes contained in each layer of heat exchange tube group in the upper heat exchange tube bundle is gradually increased from top to bottom, and the number of heat exchange tubes contained in each layer of heat exchange tube group in the lower heat exchange tube bundle is gradually decreased from top to bottom.
The number of layers of the heat exchange tube groups contained in the upper heat exchange tube bundle and the lower heat exchange tube bundle can be set according to actual conditions so as to better meet actual demands. In fig. 1, the upper heat exchange tube bundle includes six heat exchange tube groups, and the lower heat exchange tube bundle includes nine heat exchange tube groups. In order to increase the contact area of the heat exchange tubes in each layer of tube heat exchange tube group, the heat exchange tubes between two adjacent sides are arranged in a staggered way, namely, the heat exchange tubes of the upper layer/lower layer are positioned between the two adjacent heat exchange tubes of the lower layer/upper layer.
As shown in fig. 2, in this embodiment, the system further includes a working medium turbine expander 7, a working medium circulating pump 9, and a condenser 8; the working medium outlet of the working medium turbine expander 7 is connected with the working medium inlet of the condenser 8 through a first working medium pipeline, the working medium outlet of the condenser 8 is connected with the working medium inlet of the working medium circulating pump 9 through a second working medium pipeline, the working medium outlet of the working medium circulating pump 9 is connected with the spraying pipeline 5 through a third working medium pipeline, the vapor outlet 2 is connected with the working medium inlet of the working medium turbine expander 7 through a fourth working medium pipeline, and the effusion outlet 3 is connected with the second working medium pipeline through a fifth working medium pipeline.
In the present embodiment, the organic rankine cycle system having the spray evaporator 10 operates on the following principle: the low-temperature gaseous state working medium after working by the working medium turbine expander 7 is cooled and liquefied by the condenser 8, the liquid state working medium is sent to the spray pipeline 5 by the working medium circulating pump 9 and is uniformly sprayed to the heat exchange tube bundle 4 by the working medium nozzle 6 to realize heat exchange and change into high-temperature gaseous state working medium, as the contact between the liquid state working medium and the heat exchange tube bundle 4 is limited, part of the liquid state working medium which is not evaporated by heat exchange continues to be deposited at the bottom of the spray evaporator 10 in a liquid state mode, the high-temperature gaseous state working medium enters the working medium turbine expander 7 again through the steam outlet 2 on the shell 1 to do work, and the liquid state working medium deposited at the bottom of the spray evaporator 10 and the liquid state working medium in the second working medium pipeline are mixed and diffused and then are conveyed to the spray pipeline 5 by the working medium circulating pump 9 again to be sprayed to the heat exchange tube bundle 4 until the evaporation is complete.
By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:
the utility model provides an organic Rankine cycle system with a spray evaporator, and the whole ORC system adopts a spray heat exchanger, so that the organic Rankine cycle system has the characteristics of convenience in field arrangement, simple internal structure, controllable evaporation pressure and the like, and can effectively solve the problems encountered by the traditional evaporation system. The working medium enters the spray pipeline at the bottom of the evaporator through the working medium circulating pump, and the working medium is changed into mist water drops through the working medium nozzle, so that the heat exchange area can be greatly increased, the heat exchange efficiency is improved, and the volume of the evaporator is reduced. The flow of the liquid working medium is controlled through the working medium nozzle, so that the evaporation pressure can be controlled, the energy in the heat source can be utilized to the greatest extent, the generator set can be ensured to work at the optimal point all the time, and the generating efficiency of the generator set is improved. The accumulated liquid in the shell can be conveyed to the spraying pipeline through the working medium circulating pump again and sprayed onto the heat exchange tube bundle, so that the liquid working medium is completely evaporated.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.
Claims (4)
1. An organic rankine cycle system with a spray evaporator, characterized in that: including spray evaporator, spray evaporator is including being cylindric casing and setting heat exchange tube bank and the spray pipe of casing inside, upper portion and the lower part of casing are provided with respectively rather than inside intercommunication's steam export and hydrops export, heat exchange tube bank is along being on a parallel with the axis direction of casing sets up near the axis of casing, heat exchange tube bank's below is followed the axis direction of casing is provided with a plurality of spray pipes in proper order at intervals, spray pipe perpendicular to the axis of casing, each on the spray pipe along its length direction interval in proper order be provided with a plurality of working medium nozzles rather than inside intercommunication, the working medium nozzle orientation heat exchange tube bank.
2. The orc system with a spray evaporator of claim 1, wherein: the heat exchange tube bundle comprises a plurality of layers of heat exchange tube groups which are stacked from top to bottom, and each layer of heat exchange tube group comprises a plurality of heat exchange tubes which are sequentially and adjacently arranged along the direction perpendicular to the axis of the shell.
3. The orc system with a spray evaporator of claim 2, wherein: the heat exchange tube bundles comprise an upper heat exchange tube bundle and a lower heat exchange tube bundle which are respectively positioned above and below the axis of the shell, and each of the upper heat exchange tube bundle and the lower heat exchange tube bundle comprises a plurality of heat exchange tube groups which are stacked from top to bottom; the number of heat exchange tubes contained in each layer of heat exchange tube group in the upper heat exchange tube bundle is gradually increased from top to bottom, and the number of heat exchange tubes contained in each layer of heat exchange tube group in the lower heat exchange tube bundle is gradually decreased from top to bottom.
4. An organic rankine cycle system with a spray evaporator according to any one of claims 1 to 3, wherein: the system also comprises a working medium turbine expander, a working medium circulating pump and a condenser; the working medium outlet of the working medium turbine expander is connected with the working medium inlet of the condenser through a first working medium pipeline, the working medium outlet of the condenser is connected with the working medium inlet of the working medium circulating pump through a second working medium pipeline, the working medium outlet of the working medium circulating pump is connected with the spraying pipeline through a third working medium pipeline, the vapor outlet is connected with the working medium inlet of the working medium turbine expander through a fourth working medium pipeline, and the effusion outlet is connected with the second working medium pipeline through a fifth working medium pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321066362.1U CN220379635U (en) | 2023-05-06 | 2023-05-06 | Organic Rankine cycle system with spray type evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321066362.1U CN220379635U (en) | 2023-05-06 | 2023-05-06 | Organic Rankine cycle system with spray type evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220379635U true CN220379635U (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321066362.1U Active CN220379635U (en) | 2023-05-06 | 2023-05-06 | Organic Rankine cycle system with spray type evaporator |
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| Country | Link |
|---|---|
| CN (1) | CN220379635U (en) |
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2023
- 2023-05-06 CN CN202321066362.1U patent/CN220379635U/en active Active
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