CN216844630U - Steam generator of steam waste heat secondary recovery heat pump - Google Patents
Steam generator of steam waste heat secondary recovery heat pump Download PDFInfo
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- CN216844630U CN216844630U CN202123404542.XU CN202123404542U CN216844630U CN 216844630 U CN216844630 U CN 216844630U CN 202123404542 U CN202123404542 U CN 202123404542U CN 216844630 U CN216844630 U CN 216844630U
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Abstract
The utility model discloses a steam waste heat secondary recovery heat pump steam generator, which comprises a flash tank, a steam-water heat exchanger, a primary steam drain tank and a secondary steam drain tank; the secondary steam A at the user side carries out heat exchange in the steam-water heat exchanger, the heat of the heat exchange is transferred to the flash tank, and the primary steam B at the user side is saturated by positive pressure and negative pressure generated by flash evaporation in the positive pressure/negative pressure environment of the flash tank, so that a high-efficiency secondary recovery system for the waste heat of the steam is formed.
Description
Technical Field
The utility model relates to a waste heat recovery technology and recovery unit technical field, it is specific, its show steam waste heat secondary recovery heat pump steam generator.
Background
The acquisition of thermal energy in industrial processes requires the consumption of large quantities of steam. At present, steam is mainly produced by burning fossil fuel by a boiler, has high energy consumption and large pollution, and is accompanied with a large amount of carbon dioxide and waste heat emission. In the fields of food and drug production, chemical industry, environmental protection and the like, multi-effect evaporators such as an evaporation kettle, a scraper evaporator, a hollow slurry machine, a single-effect two-effect three-effect evaporator and the like need to adopt steam as a heat source to heat materials to evaporate water, and carry out concentration, crystallization and drying processes. Secondary steam generated along with the evaporation of the materials needs to be cooled and condensed again and then is discharged.
The waste heat of the secondary steam is distributed and dispersed, has quick decay, is difficult to store and has poor stability. Although the secondary steam has low grade of heat energy and poor availability, the heat value is high, additional energy is consumed for cooling and condensing, and the energy consumption and waste are huge. The distributed heat pump technology is adopted to recover low-grade heat energy of secondary steam, and the heat energy is used on site after the grade of the heat energy is improved by the heat pump, so that the aims of saving energy, improving economic benefit and reducing environmental pollution can be fulfilled.
A large amount of steam heating process conditions of 60-120 ℃ exist at a user side, so that a universal and distributed heat pump steam generating device for recovering the waste heat of secondary steam is urgently needed, and the use of the steam of a traditional boiler is replaced or reduced.
Therefore, it is necessary to provide a steam waste heat secondary recovery heat pump steam generator to achieve the above object.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steam waste heat secondary recovery heat pump steam generator.
The technical scheme is as follows:
a steam waste heat secondary recovery heat pump steam generator comprises a flash tank, a steam-water heat exchanger, a primary steam drain tank and a secondary steam drain tank;
the secondary steam A at the user side carries out heat exchange in the steam-water heat exchanger, the heat of the heat exchange is transferred to the flash tank, and the primary steam B at the user side is saturated by positive pressure and negative pressure generated by flash evaporation in the positive pressure/negative pressure environment of the flash tank, so that a high-efficiency secondary recovery system for the waste heat of the steam is formed.
Further, the steam-water heat exchanger comprises an evaporator and an auxiliary heat exchanger.
Furthermore, an evaporation side circulating pump, a water-water heat pump and a condensation side circulating pump are sequentially arranged between the evaporator and the flash tank, and the deionized water of the flash tank exchanges heat with high-temperature gaseous refrigerant in a condenser of the water-water heat pump and returns to the flash tank to be flashed to generate primary steam at the user side.
Furthermore, a low-temperature liquid refrigerant in the evaporator exchanges heat with secondary steam, and the steam is condensed into drain water and discharged into a secondary steam drain tank, so that a stable heat source is provided for the secondary recovery system of the steam waste heat.
Further, the auxiliary heat exchanger is communicated with an external cooler through a cooling water pump, and the external cooler is an air-cooled or water-cooled cooler; the auxiliary heat exchanger, the cooling water pump and the external cooler are combined to form an auxiliary cooling system by heat accumulation of the water discharge heat pump system.
Furthermore, an air cooling cooler, a water ring vacuum pump and a steam-water separator are correspondingly arranged between the secondary steam drain tank and the primary steam drain tank.
Furthermore, a drain valve used in cooperation with an air cooling cooler, a water ring vacuum pump, a steam-water separator and the like is arranged between the secondary steam drain tank and the primary steam drain tank.
Furthermore, high-temperature drainage of primary steam drainage C on the user side is discharged into the primary steam drainage tank, the vacuum degree of the system is maintained by using the water ring vacuum pump, and low-temperature and low-pressure steam is provided through an air outlet of the steam-water separator, so that gradient utilization of heat is realized.
Further, the secondary steam drain tank is communicated with a drain discharge port D through a drain pump and a drain valve.
Furthermore, a water replenishing pump and a one-way valve are arranged between the flash tank and the primary steam drain tank.
Compared with the prior art, the utility model realizes the generation of high-quality primary steam by using the latent heat released by secondary steam condensation through the heat exchange of coupling evaporation and condensation; the accumulated heat of the heat pump system is discharged by utilizing the auxiliary heat exchanger, the cooling water pump and the external cooler; the heat exchange temperature difference of the primary steam and the secondary steam is improved by utilizing the water ring vacuum pump, and the utilization efficiency of the primary steam is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Example (b):
referring to fig. 1, the present embodiment shows a steam generator of a steam waste heat secondary recovery heat pump, which includes a flash tank 1, a steam-water heat exchanger 20, a primary steam drain tank 11, and a secondary steam drain tank 13;
the secondary steam A at the user side carries out heat exchange in the steam-water heat exchanger 20, the heat of the heat exchange is transferred to the flash tank 1, and primary steam B at the user side is saturated by positive pressure and negative pressure generated by flash evaporation in the positive pressure/negative pressure environment of the flash tank 1, so that a high-efficiency secondary recovery system of the steam waste heat is formed.
The steam-water heat exchanger 20 includes an evaporator 5 and an auxiliary heat exchanger 6.
An evaporation side circulating pump 4, a water-water heat pump 3 and a condensation side circulating pump 2 are sequentially arranged between the evaporator 5 and the flash tank 1, and deionized water in the flash tank 1 exchanges heat with high-temperature gaseous refrigerant in a condenser of the water-water heat pump 3 and returns to the flash tank 1 to be flashed to generate primary steam B at a user side.
The low-temperature liquid refrigerant in the evaporator 5 exchanges heat with secondary steam, and the steam is condensed into drain water and is discharged into a secondary steam drain tank 13, so that a stable heat source is provided for the secondary recovery system of the steam waste heat.
The auxiliary heat exchanger 6 is communicated with an external cooler 8 through a cooling water pump 7, and the external cooler 8 is an air-cooled or water-cooled cooler; the auxiliary heat exchanger 6, the cooling water pump 7 and the external cooler 8 form an auxiliary cooling system for forming accumulated heat of the discharged water heat pump system.
An air cooling cooler 16, a water ring vacuum pump 17 and a steam-water separator 18 are correspondingly arranged between the secondary steam trap tank 13 and the primary steam trap tank 11.
A steam trap 19 matched with the air-cooled cooler 16, the water ring vacuum pump 17, the steam-water separator 18 and the steam trap is also arranged between the secondary steam trap tank 13 and the primary steam trap tank 11.
High-temperature hydrophobic water of primary steam hydrophobic C on the user side is discharged into the primary steam hydrophobic tank 11, the vacuum degree of the system is maintained by using the water ring vacuum pump 17, and low-temperature low-pressure steam is provided through an air outlet of the steam-water separator 18, so that gradient utilization of heat is realized.
The secondary steam trap tank 13 is communicated with a trap discharge port D through a trap pump 15 and a drain valve 15.
A water replenishing pump 9 and a one-way valve 10 are arranged between the flash tank 1 and the primary steam drain tank 11.
The steam-water heat exchanger 20 is provided with a user side secondary steam regulating valve 12 corresponding to the secondary steam A at the user side.
Compared with the prior art, the utility model realizes the generation of high-quality primary steam by using the latent heat released by secondary steam condensation through the heat exchange of coupling evaporation and condensation; the accumulated heat of the heat pump system is discharged by using an auxiliary heat exchanger 6, a cooling water pump 7 and an external cooler 8; the heat exchange temperature difference between the primary steam and the secondary steam is improved by utilizing the water ring vacuum pump 17, and the utilization efficiency of the primary steam is improved.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (6)
1. The utility model provides a steam waste heat secondary recovery heat pump steam generator which characterized in that: comprises a flash tank, a steam-water heat exchanger, a primary steam drain tank and a secondary steam drain tank;
the steam-water heat exchanger comprises an evaporator and an auxiliary heat exchanger;
an air cooling cooler, a water ring vacuum pump and a steam-water separator are correspondingly arranged between the secondary steam drain tank and the primary steam drain tank;
a water replenishing pump and a one-way valve are arranged between the flash tank and the primary steam drain tank;
an evaporation side circulating pump, a water-water heat pump and a condensation side circulating pump are sequentially arranged between the evaporator and the flash tank.
2. The steam generator of claim 1, wherein the steam generator comprises: the low-temperature liquid refrigerant in the evaporator exchanges heat with secondary steam, and the steam is condensed into drain water and is discharged into a secondary steam drain tank, so that a stable heat source is provided for the secondary recovery system of the steam waste heat.
3. The steam generator of claim 2, wherein the steam generator comprises: the auxiliary heat exchanger is communicated with an external cooler through a cooling water pump, and the external cooler is an air cooling or water cooling cooler; the auxiliary heat exchanger, the cooling water pump and the external cooler are combined to form an auxiliary cooling system by heat accumulation of the water discharge heat pump system.
4. The steam generator of claim 3, wherein the steam generator comprises: a drain valve which is used together with the air cooling cooler, the water ring vacuum pump, the steam-water separator and the matching device is also arranged between the secondary steam drain tank and the primary steam drain tank.
5. The steam generator of claim 4, wherein the steam generator comprises: high-temperature hydrophobic water of primary steam hydrophobic C on the user side is discharged into a primary steam hydrophobic tank, the vacuum degree of the system is maintained by using a water ring vacuum pump, and low-temperature low-pressure steam is provided through an air outlet of a steam-water separator, so that gradient utilization of heat is realized.
6. The steam generator of any one of claims 1 to 5, wherein: the secondary steam drain tank is communicated with a drain discharge port D through a drain pump and a drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123404542.XU CN216844630U (en) | 2021-12-30 | 2021-12-30 | Steam generator of steam waste heat secondary recovery heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123404542.XU CN216844630U (en) | 2021-12-30 | 2021-12-30 | Steam generator of steam waste heat secondary recovery heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216844630U true CN216844630U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123404542.XU Active CN216844630U (en) | 2021-12-30 | 2021-12-30 | Steam generator of steam waste heat secondary recovery heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216844630U (en) |
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2021
- 2021-12-30 CN CN202123404542.XU patent/CN216844630U/en active Active
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: Unit A6, Suhong Industrial Building, No. 81 Suhong West Road, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee after: Yikuaipu (Suzhou) Thermal Energy Environmental Protection Equipment Co.,Ltd. Address before: 215000 A6, Suhong industrial building, No. 81, Suhong West Road, Suzhou Industrial Park, Jiangsu Province Patentee before: Yikuaipu (Suzhou) water treatment equipment Co.,Ltd. |