CN220541432U - Special hot water unit for coking industry - Google Patents
Special hot water unit for coking industry Download PDFInfo
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- CN220541432U CN220541432U CN202322143717.9U CN202322143717U CN220541432U CN 220541432 U CN220541432 U CN 220541432U CN 202322143717 U CN202322143717 U CN 202322143717U CN 220541432 U CN220541432 U CN 220541432U
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- absorber
- generator
- condenser
- cooling water
- evaporator
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000004939 coking Methods 0.000 title claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 claims abstract description 87
- 239000000498 cooling water Substances 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 35
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model relates to the field of refrigeration units in the coking industry, in particular to a special hot water unit in the coking industry. Comprises an evaporator, a first absorber, a second absorber, a condenser, a first generator and a second generator; the condenser is positioned above the first absorber and the second absorber; the condenser is provided with a cooling water inlet and two cooling water outlets, the cooling water outlets are respectively connected with the cooling water inlets on the first absorber and the second absorber, and after flowing out of the condenser, the cooling water flows into the first absorber and the second absorber in parallel. The heat exchange areas of the upper cylinder and the lower cylinder of the refrigerating unit are effectively distributed, so that the optimization of the heat exchange area is realized, and the actual investment and the production cost of the unit are reduced.
Description
Technical Field
The utility model relates to the field of refrigeration units in the coking industry, in particular to a special hot water unit in the coking industry.
Background
At present, the commercial refrigerating unit is designed according to the temperature of cold water outlet of 12/7 ℃, so that the heat exchange area of the evaporator and the absorber is larger. Meanwhile, the heat exchange area of the condenser and the generator is relatively small because of the higher temperature of the hot water of the commercial air conditioner.
For the coking condition, the temperature of the raw coke oven gas is 85 ℃, the temperature of the raw coke oven gas is about 45 ℃ after being cooled by cooling water from a cooling tower in one section of a primary cooler, the water temperature after heat exchange with the raw coke oven gas is 75 ℃, and part of heat energy can be provided for a lithium bromide hot water unit to be used as a driving heat source. The temperature of the heat source is reduced to 68 ℃ after being absorbed by a lithium bromide hot water unit, and then the heat source is cooled by a cooling tower and is supplemented to a primary cooler section to be used as cooling water.
And the raw coke oven gas after being cooled by the primary cooler is subjected to secondary cooling by heat exchange with cooling water of a cooling tower. This stage directly uses cooling water at 32/38 ℃ of the cooling tower for heat exchange.
In the three sections of the primary cooler, the raw gas exchanges heat with cold water with the temperature of 16 ℃ lower than that of cooling water, and finally the raw gas is reduced to 25 ℃. In the process, a section of heat source of the primary cooler is used as heat source water to supply the lithium bromide hot water unit for driving, and the generated chilled water is used as cooling water of three sections of the primary cooler.
Because the temperature of hot water of the heat source generated in the process line is generally lower than 90 ℃, the required temperature of cold water is 16 ℃, the required heat exchange area of the evaporator and the absorber is smaller, and the required area of the generator and the condenser is larger. If the commercial air conditioner is directly used for coping, unreasonable matching of heat exchange areas is caused, and finally, the unit cost is high.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a special hot water unit for the coking industry, which effectively distributes heat exchange areas of an upper cylinder and a lower cylinder of a refrigerating unit, realizes optimization of the heat exchange areas and reduces the actual investment and production cost of the unit.
The technical scheme of the utility model is as follows: the special hot water unit for the coking industry comprises an evaporator, a first absorber, a second absorber, a condenser, a first generator and a second generator;
the condenser is positioned above the first absorber and the second absorber;
the condenser is provided with a cooling water inlet and two cooling water outlets, the cooling water outlets are respectively connected with the cooling water inlets on the first absorber and the second absorber, and after flowing out of the condenser, the cooling water flows into the first absorber and the second absorber in parallel.
In the utility model, the evaporator is provided with a cold water inlet and a cold water outlet, and two ends of a heat exchange tube of the evaporator are respectively connected with the cold water inlet and the cold water outlet;
and steam channels are respectively connected between the evaporator and the first absorber, and between the evaporator and the second absorber.
The dilute solution outlet at the bottom of the first absorber is connected with the dripping device at the top of the first generator through a first connecting pipeline;
the concentrated solution outlet at the bottom of the first generator is connected with the dripping device at the top of the first absorber through a second connecting pipeline;
and a first heat exchanger is arranged between the first connecting pipeline and the second connecting pipeline.
The dilute solution outlet at the bottom of the second absorber is connected with the drip device at the top of the second generator through a third connecting pipeline;
the concentrated solution outlet at the bottom of the second generator is connected with a dripping device at the top of the second absorber through a fourth connecting pipeline;
and a second heat exchanger is arranged between the third connecting pipeline and the fourth connecting pipeline.
And steam channels are respectively connected between the condenser and the first generator and between the cold air and the second generator.
The first generator and the second generator are respectively provided with a heat source water outlet and a heat source inlet, the heat source water outlet of one generator is connected with the heat source water inlet of the other generator, and the heat source water flows into the first generator and the second generator in sequence.
The beneficial effects of the utility model are as follows:
(1) In the existing coking industry working condition, the temperature of the driving heat source is usually lower, and the temperature of the cold water is higher, so that the running efficiency of the unit can be effectively improved, the initial investment is reduced, and the energy-saving emission-reducing and power-assisting double-carbon policies are realized;
(2) In the unit, cooling water in the working condition of the coking industry enters from the condenser, the pressure of the upper cylinder is reduced, the cooling water flows out from the two absorbers, and the pressure of the lower cylinder is improved, so that the heat exchange areas of the upper cylinder and the lower cylinder of the refrigerating unit are more effectively distributed, the optimization of the heat exchange areas is realized, and the actual investment and the production cost of the unit are reduced.
Drawings
Fig. 1 is a schematic view of the connection structure of the present utility model.
In the figure: 1 an evaporator; 2 a first absorber I; a second absorber; 4 a condenser; 5 a first generator; 6 a second generator I I;7, a first heat exchanger; 8 a second heat exchanger; 9 a refrigerant pump; 10 a second dilute solution pump; 11 a first dilute solution pump; 12 a first concentrated solution pump; 13 a second concentrated solution pump; 14 a liquid baffle; 15 drip shower device.
Detailed Description
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.
In the following description, specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the special hot water unit for coking industry in the utility model comprises an evaporator 1, a first absorber 2, a second absorber 3, a condenser 4, a first generator 5 and a second generator 6, wherein the condenser 4, the first generator 5 and the second generator 6 are positioned above the evaporator 1, the first absorber 2 and the second absorber 3. A liquid baffle 14 is arranged in the steam channel between the condenser 4 and the first generator 5 and the steam channel between the condenser 4 and the second generator 6. A liquid baffle 14 is arranged in the steam channel between the evaporator 1 and the first absorber 2 and the steam channel between the evaporator 1 and the second absorber 3.
A connecting pipeline is arranged between a liquid outlet at the bottom of the evaporator 1 and a dripping device 15 at the top of the evaporator 1, a refrigerant pump 9 is arranged on the connecting pipeline, refrigerant water gathered at the bottom of the evaporator 1 is pumped to the dripping device 15 at the top of the evaporator 1 through the refrigerant pump, and is dripped on a heat exchange tube of the evaporator 1 through the dripping device.
The evaporator 1 is provided with a cold water inlet and a cold water outlet, two ends of a heat exchange tube of the evaporator 1 are respectively connected with the cold water inlet and the cold water outlet, and after cold water flows into the heat exchange tube, the cold water on the surface of the heat exchange tube absorbs heat of the cold water in the heat exchange tube, and the cold water absorbs heat and evaporates into cold steam. The refrigerant vapor enters the first absorber 2 and the second absorber 3 through vapor channels, respectively. At the same time, the temperature of the cold water in the heat exchange tube is further reduced.
The bottom of the first absorber 2 is provided with a dilute solution outlet which is connected with a dripping device 15 at the top of the first generator 5 through a first connecting pipeline. The first connection line is provided with a first dilute solution pump 11. The dilute solution in the first absorber 2 is pumped into the first generator 5 by a first dilute solution pump 11.
The bottom of the first generator 5 is provided with a concentrated solution outlet, the concentrated solution outlet is connected with a dripping device 15 at the top of the first absorber through a second connecting pipeline, and the concentrated solution is dripped on the surface of the heat exchange tube by the dripping device. The second connecting pipeline is provided with a first concentrated solution pump 12. The concentrated solution in the first generator 5 is pumped into the first absorber 2 by the second concentrated solution pump 12.
A first heat exchanger 8 is arranged between the first connecting pipeline and the second connecting pipeline. In the first heat exchanger 8, the dilute solution in the first connecting pipeline absorbs the heat of the concentrated solution in the second connecting pipeline, so that the temperature of the dilute solution is increased, the temperature of the concentrated solution is reduced, the internal heat is recovered, and the consumption of external energy sources is reduced.
The bottom of the second absorber 3 is provided with a dilute solution outlet which is connected with a dripping device 15 at the top of the second generator 6 through a third connecting pipeline. The third connecting pipeline is provided with a second dilute solution pump 10. The dilute solution in the second absorber 3 is pumped into the second generator 6 by means of a second dilute solution pump 10.
The bottom of the second generator 6 is provided with a concentrated solution outlet, the concentrated solution outlet is connected with a dripping device 15 at the top of the second absorber through a fourth connecting pipeline, and the concentrated solution is dripped on the surface of the heat exchange tube by the dripping device. The fourth connecting pipeline is provided with a second concentrated solution pump 13. The concentrated solution in the second generator 6 is pumped into the second absorber 3 by a second concentrated solution pump 13.
A second heat exchanger 7 is arranged between the third connecting pipeline and the fourth connecting pipeline. In the second heat exchanger 7, the dilute solution in the third connecting pipeline absorbs the heat of the concentrated solution in the fourth connecting pipeline, so that the temperature of the dilute solution is increased, the temperature of the concentrated solution is reduced, the internal heat is recovered, and the consumption of external energy sources is reduced.
The first generator 5 and the second generator 6 are respectively provided with a heat source water inlet and a heat source water outlet, in this embodiment, the heat source water outlet of the second generator 6 is connected with the heat source water inlet of the first generator 5, and the heat source water sequentially enters the second generator 6 and the first generator 5.
After the dilute solution in the second absorber enters the second generator 6, the dilute solution absorbs the heat of the heat source water, and the dilute solution is heated to flash to emit refrigerant steam, so that the refrigerant steam flows into the condenser 4 through the steam channel under the action of pressure difference. At the same time, the dilute solution is concentrated to a concentrated solution, which is pumped into the second absorber 3 by the second concentrated solution pump 13. The temperature of the heat source water is reduced, and the cooled heat source water continues to flow into the first generator 5.
After the dilute solution in the first absorber enters the first generator 5, the dilute solution absorbs heat of heat source water, and refrigerant steam is flashed by heating the dilute solution, and flows into the condenser 4 through the steam channel under the action of pressure difference. At the same time, the dilute solution is concentrated to a concentrated solution, which is pumped into the first absorber 2 by the first concentrated solution pump 12.
The condenser 4 is located above the first absorber 2 and the second absorber 3, a cooling water inlet and two cooling water outlets are arranged on the condenser 4, and a cooling water inlet and a cooling water outlet are respectively arranged on the first absorber 2 and the second absorber 3. The two cooling water outlets of the condenser 4 are connected to the cooling water inlets of the first absorber 2 and the second absorber 3, respectively.
After the cooling water enters the condenser 4, the cooling water absorbs heat of the refrigerant steam entering the condenser 4, the temperature of the cooling water is increased, and the warmed refrigerant water flows into the first absorber 2 and the second absorber 3 in parallel. At the same time, the refrigerant vapor in the condenser 4 is cooled down to be refrigerant water. A refrigerant channel is arranged between the condenser 4 and the evaporator 1, and refrigerant water flows into the evaporator 1 through the refrigerant channel, so that refrigerant circulation in the unit is realized.
After the refrigerant vapor in the evaporator 1 flows into the first absorber 2 and the second absorber 3, the concentration of the concentrated solution on the surface of the heat exchange tube is reduced after the concentrated solution absorbs the refrigerant vapor, so that the concentrated solution becomes a dilute solution, and heat is released in the process of absorbing the refrigerant by the concentrated solution. After cooling water flows into the first absorber 2 and the second absorber 3 in parallel, the absorption latent heat in the first absorber 2 and the second absorber 3 is absorbed respectively, the temperature of the cooling water is continuously increased, and the cooling water after the temperature increase flows out of the first absorber 2 and the second absorber 3 respectively. At the same time, the refrigerant vapor in the first absorber 2 and the second absorber 3 is cooled down to be refrigerant water.
In the first absorber 2 and the second absorber 3, after the refrigerant water and the concentrated solution are mixed, the concentrated solution is diluted into the dilute solution, so that the circulation of the solution in the unit is realized.
The unit is in the operation process:
in the evaporator 1, cold water from a user enters the inner side of a heat exchange tube of the evaporator, the cold water in the evaporator is heated, the cold water is evaporated into cold steam after obtaining heat, and the heat of the cold water is transferred to the cold steam in the evaporator.
In the first absorber 2, the concentrated solution from the first generator 5 absorbs the refrigerant vapor from the evaporator, the concentration is reduced to a dilute solution, and the vapor absorbs latent heat, and the latent heat of absorption is carried out of the unit by the cooling water.
In the second absorber 3, the concentrated solution from the second generator 6 absorbs the refrigerant vapor from the evaporator, the concentration is reduced to a dilute solution, and the vapor absorbs latent heat, and the latent heat of absorption is carried out of the unit by the cooling water.
The first generator 5 heats the dilute solution from the first absorber 2, flashes the solution, generates refrigerant vapor, and transfers the refrigerant vapor to the condenser 4 by a pressure difference.
The second generator 6 heats the dilute solution from the second absorber 3, flashes the solution, generates refrigerant vapor, and transfers the refrigerant vapor into the condenser 4 by a pressure difference.
The cooling water of the condenser 4 condenses the refrigerant vapor into the refrigerant water by absorbing heat of the refrigerant vapor generated by the first generator 5 and the first generator 6, and takes latent heat of vaporization of the refrigerant vapor out of the condenser 4 by the cooling water. The condensed refrigerant water is fed into the evaporator 1 through a refrigerant line as a supplement to the refrigerant consumed by the evaporator.
Simultaneously, hot water flows in the second generator 6 and the first generator 5 in sequence; after the cooling water flows out from the condenser, the cooling water flows into the first absorber 2 and the second absorber 3 in parallel; cold water flows in the heat exchange tubes of the evaporator.
The special hot water unit for the coking industry provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The special hot water unit for the coking industry is characterized by comprising an evaporator, a first absorber, a second absorber, a condenser, a first generator and a second generator;
the condenser is positioned above the first absorber and the second absorber;
the condenser is provided with a cooling water inlet and two cooling water outlets, the cooling water outlets are respectively connected with the cooling water inlets on the first absorber and the second absorber, and after flowing out of the condenser, the cooling water flows into the first absorber and the second absorber in parallel.
2. The coking industry specific hot water unit according to claim 1, wherein,
the evaporator is provided with a cold water inlet and a cold water outlet, and two ends of the heat exchange tube of the evaporator are respectively connected with the cold water inlet and the cold water outlet;
and steam channels are respectively connected between the evaporator and the first absorber, and between the evaporator and the second absorber.
3. The coking industry specific hot water unit according to claim 1, wherein,
the dilute solution outlet at the bottom of the first absorber is connected with the dripping device at the top of the first generator through a first connecting pipeline;
the concentrated solution outlet at the bottom of the first generator is connected with the dripping device at the top of the first absorber through a second connecting pipeline;
and a first heat exchanger is arranged between the first connecting pipeline and the second connecting pipeline.
4. The coking industry specific hot water unit according to claim 1, wherein,
the dilute solution outlet at the bottom of the second absorber is connected with the drip device at the top of the second generator through a third connecting pipeline;
the concentrated solution outlet at the bottom of the second generator is connected with a dripping device at the top of the second absorber through a fourth connecting pipeline;
and a second heat exchanger is arranged between the third connecting pipeline and the fourth connecting pipeline.
5. The coking industry specific hot water unit according to claim 1, wherein,
and steam channels are respectively connected between the condenser and the first generator and between the condenser and the second generator.
6. The coking industry specific hot water unit according to claim 1, wherein,
the first generator and the second generator are respectively provided with a heat source water outlet and a heat source inlet, the heat source water outlet of one generator is connected with the heat source water inlet of the other generator, and the heat source water flows into the first generator and the second generator in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322143717.9U CN220541432U (en) | 2023-08-10 | 2023-08-10 | Special hot water unit for coking industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322143717.9U CN220541432U (en) | 2023-08-10 | 2023-08-10 | Special hot water unit for coking industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220541432U true CN220541432U (en) | 2024-02-27 |
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ID=89966141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322143717.9U Active CN220541432U (en) | 2023-08-10 | 2023-08-10 | Special hot water unit for coking industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220541432U (en) |
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2023
- 2023-08-10 CN CN202322143717.9U patent/CN220541432U/en active Active
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