CN214792734U - Waste heat recycling device - Google Patents
Waste heat recycling device Download PDFInfo
- Publication number
- CN214792734U CN214792734U CN202121182472.5U CN202121182472U CN214792734U CN 214792734 U CN214792734 U CN 214792734U CN 202121182472 U CN202121182472 U CN 202121182472U CN 214792734 U CN214792734 U CN 214792734U
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- Prior art keywords
- steam
- pressure
- steam turbine
- waste heat
- lithium bromide
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- 239000002918 waste heat Substances 0.000 title claims abstract description 29
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 38
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 14
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000004939 coking Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000003337 fertilizer Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Abstract
The utility model discloses a waste heat recycling device, which comprises a lithium bromide unit and a steam turbine device, wherein when in use, an air inlet of the steam turbine device is communicated with a low-pressure steam pipeline generated outside, external low-pressure steam firstly enters the steam turbine device to push rotating parts such as an internal impeller or a blade to rotate, and further part of heat energy is converted into kinetic energy which is conveyed to the outside for use in a kinetic energy mode; the generator can also be driven to generate electricity and is transmitted to the outside for use in an electric mode, meanwhile, the pressure of low-pressure steam is correspondingly reduced, the low-pressure steam is discharged to a downstream lithium bromide unit generator to drive a heat source pipeline, and the pressure of outlet airflow of the low-pressure air outlet is controlled by a pressure regulating component; the energy of part of external low-pressure steam is converted into kinetic energy or electric energy, the pressure of the low-pressure steam is reduced to the pressure of a driving heat source required by a generator of a subsequent lithium bromide unit, the steam pressure is utilized in a gradient mode, the comprehensive utilization rate of the steam is improved, and the heat recovery efficiency is greatly improved.
Description
Technical Field
The utility model relates to an energy recovery equipment technical field, in particular to waste heat recovery utilizes device.
Background
At present, in the petrochemical industry, the coal chemical industry, the chemical fiber industry and other industries, the used equipment usually generates saturated or superheated steam which is more than 0.1MPa (G) and is influenced by the characteristics of a lithium bromide solution, and the direct drive saturated steam of a lithium bromide unit needs to be less than 0.8MPa, so that the high-pressure steam generated in the process equipment needs to be reduced to the saturated steam which is less than 0.8MPa (G) by using a cooling and pressure reducing device at present, and then the saturated steam can be used by the lithium bromide unit.
The potential energy and the internal energy of high-temperature and high-pressure steam are only reduced by the current cooling and pressure reducing device without recycling, and the potential energy and the internal energy of the high-temperature and high-pressure steam are also consumed by the current cooling and pressure reducing device, so that the energy is wasted.
Therefore, how to improve the recovery efficiency of steam waste heat in petrochemical industry, coal chemical industry, chemical fiber and the like is a technical problem that technicians in the field always pay attention to.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waste heat recovery utilizes device, including the lithium bromide unit, the lithium bromide unit includes generator, condenser, absorber and evaporimeter at least, wherein the generator with the absorber forms solution circulation circuit, the evaporimeter with the condenser can form the cryogen return circuit, still includes the steam turbine device, the steam turbine device includes air inlet, power output shaft and low pressure gas outlet, the low pressure gas outlet can communicate the import of the drive heat source pipeline of generator, and the steam turbine device still includes the pressure regulating part, is used for adjusting low pressure gas outlet gas pressure.
When the device is used, an air inlet of the steam turbine device is communicated with a low-pressure steam pipeline generated outside, so that external low-pressure steam firstly enters the steam turbine device to push rotating parts such as an internal impeller or a blade to rotate, and further partial heat energy is converted into kinetic energy which is conveyed to the outside for use in a kinetic energy mode; the generator can be driven to generate electricity and is conveyed to the outside for use in an electric power mode, meanwhile, the low-pressure steam pressure is correspondingly reduced, the low-pressure air outlet can be used for discharging the low-pressure air outlet to a generator driving heat source pipeline in the downstream, the low-pressure air outlet further enters the generator, and the pressure of outlet airflow of the low-pressure air outlet is controlled through the pressure regulating component so as to meet the requirement of the follow-up generator in work.
According to the above description, the utility model provides an increased steam turbine device among the waste heat recovery device to replace cooling pressure relief device, can turn into kinetic energy or electric energy with the energy conversion of partly outside low-pressure steam, reduce the pressure of low-pressure steam to the required drive heat source pressure of the generator of follow-up lithium bromide unit simultaneously, improved heat recovery efficiency greatly.
Optionally, the lithium bromide unit includes at least one of a single-effect lithium bromide unit or a double-effect lithium bromide unit.
Optionally, the cooling water pipe inside the condenser and the cooling water pipe of the absorber are connected in series or in parallel or in series and parallel.
Optionally, the pressure regulating part includes butterfly valve and driving piece, the butterfly valve set up in the inside gas flow way of steam turbine device, the driving piece is used for the drive the butterfly valve action is in order to change steam turbine device's rotational speed.
Optionally, the steam turbine device comprises an impeller and a rotor, the rotating speed of the steam turbine device is greater than or equal to 11000 r/min, and the pressure difference range of the inlet and the exhaust is more than 1-131 kg/cm 2.
Optionally, the steam turbine device and the lithium bromide unit are integrated in the same frame.
Optionally, the following components are also included:
a steam generating device capable of generating steam of 0.1Mpa or more;
a power input component;
the power output shaft of the steam turbine device is connected with the power input shaft of the power input part so as to drive the power input part to act; the steam outlet of the steam generating device can be connected to the inlet of the steam turbine.
Optionally, the power input component includes one or more of a generator, a power pump or a compressor.
Optionally, the steam generating device is one or more of equipment for petrochemical industry, coal chemical industry, textile chemical fiber, chemical fertilizer, steel coking, rubber tires, biological medicine, food and paper industry.
Optionally, the steam turbine further comprises a flow switch valve, which is arranged on a pipeline of the steam generating device communicated with the air inlet of the steam turbine device.
Drawings
Fig. 1 is a schematic structural diagram of a waste heat recycling device in a first embodiment of the present invention;
fig. 2 is a schematic structural view of a waste heat recycling device in a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a waste heat recycling device according to a third embodiment of the present invention.
Wherein, in fig. 1 to 3:
the system comprises a lithium bromide unit 1, a generator 11, an absorber 12, a condenser 13, an evaporator 14, a cooling water/hot water outlet pipe 1a, a cooling water/hot water inlet pipe 1b, a cold water/residual hot water outlet pipe 1c, a cold water/residual hot water inlet pipe 1d, a steam turbine device 2, a steam generation device 3, a power input part 4, an electric power output end 41 and a flow switch valve 5.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a waste heat recycling device according to a first embodiment of the present invention; fig. 2 is a schematic structural view of a waste heat recycling device in a second embodiment of the present invention; fig. 3 is a schematic structural diagram of a waste heat recycling device according to a third embodiment of the present invention.
The utility model provides a waste heat recovery utilizes device, including lithium bromide unit 1 and steam turbine device 2. Wherein the lithium bromide unit 1 comprises at least a generator 11, a condenser 13, an absorber 12 and an evaporator 14, the generator 11 and the absorber 12 forming a solution circulation loop, the evaporator 14 and the condenser 13 being able to form a refrigerant loop, each loop not shown in the figures, but this does not hinder the understanding and implementation of the technical solution herein by the skilled person.
The utility model provides a waste heat recovery utilizes industrial fields such as mainly used petrochemical, coal chemical industry, chemical fibre for one or several in industrial equipment such as recycle petrochemical, coal chemical industry, weaving chemical fibre, chemical fertilizer, steel coking, rubber tire, biological medicine, food or papermaking at the low pressure steam of during operation production, the steam that these equipment produced is higher than the pressure and the temperature as 1 drive heat source of lithium bromide unit.
The utility model provides a steam turbine device 2 includes air inlet, power output shaft and low pressure gas outlet. The low-pressure outlet can be connected to the inlet of the generator 11, and the steam turbine installation 2 further comprises a pressure regulating element for regulating the gas pressure at the low-pressure outlet. The pressure regulating part comprises a butterfly valve and a driving part, the butterfly valve is arranged in a gas flow channel inside the steam turbine device 2, and the driving part is used for driving the butterfly valve to act so as to change the rotating speed of the steam turbine device 2, so that the gas pressure of a low-pressure gas outlet can be regulated. Although the butterfly valve and the drive are not shown, the person skilled in the art, with the knowledge of his own, is fully capable of understanding and implementing the solution described herein.
When the device is used, the air inlet of the steam turbine device 2 is communicated with a low-pressure steam pipeline generated outside, so that external low-pressure steam firstly enters the steam turbine device 2 to push rotating pieces such as an internal impeller or a blade to rotate, and further partial heat energy is converted into kinetic energy which is conveyed to the outside for use in a kinetic energy mode; the generator can be driven to generate electricity and is conveyed to the outside for use in an electric power mode, meanwhile, the low-pressure steam pressure is correspondingly reduced, the low-pressure air outlet can be discharged to the downstream generator 11 to drive the heat source pipeline, then the low-pressure steam enters the generator 11, and the pressure of the outlet airflow of the low-pressure air outlet is controlled through the pressure regulating part so as to meet the requirement of the follow-up generator 11 in work.
According to the above description, the utility model provides an increased steam turbine device 2 among the waste heat recovery device to replace cooling pressure relief device, can turn into kinetic energy or electric energy with the energy conversion of partly outside low pressure steam, reduce the pressure of low pressure steam to the required drive heat source pressure of the generator 11 of follow-up lithium bromide unit 1 simultaneously, improved heat recovery efficiency greatly.
In the lithium bromide unit 1, steam flowing out of the steam turbine device 2 is used as a driving heat source, the lithium bromide unit 1 can produce cold water and hot water according to needs, and corresponding energy can be supplied to the outside by reasonably setting working parameters of the lithium bromide unit 1 according to outside use requirements. Fig. 1 shows a connection line connection between the lithium bromide unit 1 and an external line: a cooling water/hot water outlet pipe 1a, a cooling water/hot water inlet pipe 1b, a cold water/residual heat water outlet pipe 1c, and a cold water/residual heat water inlet pipe 1 d.
The utility model provides a lithium bromide unit 1 can be single-effect lithium bromide unit 1, also can be double-effect lithium bromide unit 1, and wherein the concrete structure of single-effect or double-effect lithium bromide unit 1 and the relation of connection between each part, this paper does not do the detailed description.
In a specific embodiment, the cooling water pipe inside the condenser 13 and the cooling water pipe of the absorber 12 are connected in series or in parallel or in series and parallel, wherein different connection modes of the cooling water pipes of the condenser 13 and the absorber 12 of the single-effect lithium bromide unit 1 are respectively shown in fig. 2 and 3.
The steam turbine device 2 in each embodiment may include an impeller and a rotor, the rotation speed of the steam turbine device 2 is 11000 rpm or more, and the intake and exhaust pressure difference range is 1 to 131kg/cm2. That is, the steam turbine 2 herein has a small size, a small volume, and a flexible arrangement, and is advantageous for being integrated with the lithium bromide unit 1 to form a complete machine.
The waste heat recycling device can also comprise a frame, and the steam turbine device 2 and the lithium bromide unit 1 are integrated in the same frame. Therefore, a field connecting pipeline is not needed between the steam turbine device 2 and the lithium bromide unit 1, and the whole machine can leave a factory.
Of course, the steam turbine device 2 and the lithium bromide unit 1 can also be designed in a split mode, the two are connected through a pipeline on site, the positions of the two are arranged according to the site use condition, and the use flexibility is improved.
Furthermore, the utility model provides a waste heat recovery utilizes device still includes steam generation device 3 and power input part 4.
Wherein the steam generating device 3 can generate steam of more than 0.1 Mpa; as mentioned above, the steam generating device 3 is mainly waste heat steam generated in operation.
The power input part 4 is mainly used for receiving the kinetic energy of the steam turbine device 2. The power input member 4 may be a generator, or may be a device requiring kinetic energy input, such as a power pump or a compressor. Taking a generator as an example, the steam turbine 2 can drive the generator to rotate, so that the generator generates electricity, and the current is output from the power output terminal 41 of the generator to an external power grid.
The power output shaft of the steam turbine device 2 is connected with the power input shaft of the power input part 4 so as to drive the power input part 4 to act; the steam outlet of the steam generation device 3 can communicate with the inlet of the steam turbine device 2.
In the embodiment, steam generated by the steam generating device 3 works enters the steam turbine device 2, and part of the steam works to form kinetic energy to drive the power input part 4 to work.
The pipeline of the steam generating device 3 communicated with the air inlet of the steam turbine device 2 can be also provided with a flow switch valve. The flow switch valve can control the steam flow in the pipeline so as to realize accurate control.
The flow switch valve can be a manual valve or an electronic control valve, and is favorable for realizing automatic control.
Wherein the condensed water pipeline in the attached figure is an outlet pipeline of a driving heat source of the generator.
It is right above the utility model provides a waste heat recovery utilizes device has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The utility model provides a waste heat recovery utilizes device, includes lithium bromide unit (1), lithium bromide unit (1) includes generator (11), condenser (13), absorber (12) and evaporimeter (14) at least, wherein generator (11) with absorber (12) form solution circulation circuit, evaporimeter (14) with condenser (13) can form the cryogen return circuit, its characterized in that still includes steam turbine device (2), steam turbine device (2) include air inlet, power output shaft and low pressure gas outlet, the low pressure gas outlet can communicate the drive heat source pipeline import of generator (11), and steam turbine device (2) still include the pressure regulating part, are used for adjusting low pressure gas outlet gas pressure.
2. The waste heat recovery device according to claim 1, wherein the lithium bromide unit (1) comprises at least one of a single-effect lithium bromide unit (1) or a double-effect lithium bromide unit (1).
3. The waste heat recovery device according to claim 1, wherein the cooling water pipe inside the condenser (13) and the cooling water pipe of the absorber (12) are connected in series or in parallel or in series and parallel.
4. The heat recovery device according to claim 1, wherein the pressure regulating member comprises a butterfly valve and a driving member, the butterfly valve is disposed in the gas flow passage inside the steam turbine device (2), and the driving member is configured to drive the butterfly valve to operate to change the rotation speed of the steam turbine device (2).
5. The waste heat recovery and utilization device according to any one of claims 1 to 4, wherein the steam turbine device (2) comprises an impeller and a rotor, the rotation speed of the steam turbine device (2) is greater than or equal to 11000 rpm, and the pressure difference of the inlet and the exhaust gas ranges from 1kg/cm to 131kg/cm2。
6. The waste heat recovery device according to any one of claims 1 to 4, further comprising a frame, wherein the steam turbine unit (2) and the lithium bromide unit (1) are integrated in the same frame.
7. The waste heat recovery device according to any one of claims 1 to 4, further comprising:
a steam generation device (3) capable of generating steam of 0.1MPa or more;
a power input member (4);
the power output shaft of the steam turbine device (2) is connected with the power input shaft of the power input part (4) so as to drive the power input part (4) to act; the steam outlet of the steam generation device (3) can be connected to the inlet of the steam turbine device (2).
8. The waste heat recovery device according to claim 7, characterized in that the power input part (4) comprises one or more of a generator, a power pump or a compressor.
9. The waste heat recycling device according to claim 7, wherein the steam generating device (3) is one or more of devices for petrochemical industry, coal chemical industry, textile chemical fiber, fertilizer, steel coking, rubber tire, biological medicine, food or paper industry.
10. The waste heat recovery and utilization device according to claim 7, further comprising a flow switching valve (5) disposed on a pipeline connecting the steam generating device (3) and the inlet of the steam turbine device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182472.5U CN214792734U (en) | 2021-05-28 | 2021-05-28 | Waste heat recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182472.5U CN214792734U (en) | 2021-05-28 | 2021-05-28 | Waste heat recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214792734U true CN214792734U (en) | 2021-11-19 |
Family
ID=78698893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182472.5U Active CN214792734U (en) | 2021-05-28 | 2021-05-28 | Waste heat recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214792734U (en) |
-
2021
- 2021-05-28 CN CN202121182472.5U patent/CN214792734U/en active Active
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