CN219433214U - Waste heat recovery device - Google Patents
Waste heat recovery device Download PDFInfo
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- CN219433214U CN219433214U CN202320113252.XU CN202320113252U CN219433214U CN 219433214 U CN219433214 U CN 219433214U CN 202320113252 U CN202320113252 U CN 202320113252U CN 219433214 U CN219433214 U CN 219433214U
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Abstract
The utility model discloses a waste heat recovery device which comprises a condensate flash tank, a steam ejector, a condensate tank and a condensate recovery pump, wherein a feed inlet for introducing steam to be recovered and a discharge outlet for discharging condensate are arranged at the bottom of the condensate flash tank, a steam outlet is arranged at the top of the condensate flash tank, the discharge outlet is connected to the condensate tank through a pipeline, an inlet of the steam ejector is connected with a gas phase outlet of the condensate tank and the outside of the condensate tank is introduced with steam, an outlet of the steam ejector is connected to a pipeline on the steam outlet, and the condensate tank is connected to a condensate recovery system through the condensate recovery pump. The utility model recycles the secondary energy generated in the high-grade primary energy utilization process, and reduces the resource waste.
Description
Technical Field
The utility model relates to the field of resource recovery, in particular to a waste heat recovery device.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
The waste heat and residual pressure refer to pressure difference, energy difference and the like released by enterprises in the production process, and the energy is directly wasted if not recovered, so that the energy is continuously improved in utilization rate, and a certain technology is needed to be utilized for recycling. The resource belongs to secondary utilization energy, is a product generated by primary energy and extracted by certain chemical reaction or energy, and certain heat is used up after a certain process is finished, and is the residual heat and residual pressure at the moment.
Most of heating modes in the chemical industry at present provide heat for primary energy steam produced by coal, for example, common heating modes in chemical production are 0.5Mpa, 1.2Mpa, 3.8Mpa or 9.8Mpa steam heating;
at present, condensate generated after steam is heated is directly discharged into a condensate pipe network to be consumed, and the method wastes the condensate generated by high-pressure steam and wastes energy.
Disclosure of Invention
In order to solve the technical problems in the prior art, the utility model provides a waste heat recovery device which can recycle secondary energy generated in the primary energy utilization process with a higher level, thereby reducing resource waste.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a waste heat recovery device, including condensate flash tank, steam ejector, condensate groove and condensate recovery pump, condensate flash tank bottom is equipped with the feed inlet that is used for letting in to wait to retrieve steam and is used for discharging the discharge gate of condensate, condensate flash tank top is equipped with the steam outlet, the discharge gate passes through the pipeline to be connected to the condensate groove, steam ejector entry connection condensate groove gaseous phase export and outside lets in steam, steam ejector exit linkage is to the pipeline on the steam outlet, the condensate groove is connected to condensate recovery system through condensate recovery pump.
Further, the condensate flash tank comprises a tank body, a foam remover arranged in the tank body, a feed inlet, a discharge outlet and a steam outlet which are arranged on the tank body, wherein the foam remover is of a net body structure and is arranged on the upper part of the tank body, the feed inlet is positioned on the side wall of the tank body at the lower part of the foam remover, the steam outlet is positioned at the top of the tank body, and the discharge outlet is positioned at the bottom of the tank body.
Further, the pipelines of the feed inlet and the discharge outlet are respectively provided with a flowmeter and a pressure transmitter.
Further, a check valve is arranged on the pipeline in front of the feed inlet of the condensate flash tank.
Furthermore, a pressure reducing valve is arranged on a pipeline in front of the feed inlet of the condensate flash tank.
Further, the condensate flash tank is provided with two feed inlets, 9.8Mpa steam and 3.8Mpa steam are respectively passed through, and the steam outlet of the condensate flash tank discharges 1.2Mpa steam.
The utility model has the beneficial effects that: the waste heat recovery device provided by the utility model can recycle secondary energy generated in the primary energy utilization process with a higher level, so that the resource waste is reduced, the working efficiency is improved, and the enterprise cost is reduced. The method has the advantages of safety, high efficiency, energy conservation, effective improvement of energy recovery rate and reduction of energy waste in the process.
Drawings
FIG. 1 is a schematic diagram of a waste heat recovery device;
FIG. 2 is a schematic diagram of the condensate flash drum;
in the figure: 1. the condensate flash tank, 2, the steam injector, 3, the condensate recovery tank, 4, the condensate recovery pump, 5, the condensate recovery system, 6, 1.2Mpa steam, 7, 3.8Mpa steam, 8, 9.8Mpa steam, 9, the cell body, 10, the demister, 11, the feed inlet, 12, the discharge gate, 13, the steam outlet.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and specific examples.
Example 1
The embodiment discloses waste heat recovery device, as shown in fig. 1, including condensate flash drum 1, steam injector 2, condensate recovery tank 3, condensate recovery pump 4, condensate flash drum 1 bottom is equipped with the feed inlet 11 that is used for letting in to wait to retrieve steam and is used for discharging condensate discharge gate 12, condensate flash drum 1 top is equipped with steam outlet 13, discharge gate 12 is connected to condensate tank 3 through the pipeline, steam injector 2 entry is connected condensate tank 3 gaseous phase export and outside 1.2Mpa steam 6 of letting in, steam injector 2 exit linkage is to the pipeline on the steam outlet 13, condensate tank 3 is connected to condensate recovery system 5 through condensate recovery pump 4.
As shown in fig. 2, the condensate flash tank 1 comprises a tank body 9, a foam remover 10 arranged in the tank body 9, a feed inlet 11, a discharge outlet 12 and a steam outlet 13 which are arranged on the tank body 9, wherein the foam remover 10 is of a net body structure and is arranged on the upper part of the tank body 9, the feed inlet 11 is positioned on the side wall of the tank body at the lower part of the foam remover 10, the steam outlet 13 is positioned at the top of the tank body 9, and the discharge outlet 12 is positioned at the bottom of the tank body 9.
The condensate flash drum 1 is an important energy-saving device and is commonly used for boiler blow-down and waste heat recovery of superheated condensate. The superheated condensate or the boiler blow-down water enters the tank along the tangent line of the flash tank, and according to the two-phase flow and vortex separation theory of the fluid, after the expansion in the tank, the pressure is reduced, flash steam can be generated in the tank, and the flash steam can be introduced into a low-pressure steam pipeline or introduced into a medium-pressure pipeline after being pressurized by an ejector, and then enters a heat utilization device to heat materials, so that the original low-quality heat energy can be reused. The saturated condensate collected in the lower part flows in and flows into the condensate tank through the drain valve. I.e. saturated water at high pressure, enters the condensate flash drum 1 at relatively low pressure, and then, due to the sudden pressure drop, the saturated water becomes saturated water vapor and saturated water at a partial vessel pressure, the saturated water vapor is discharged to the lower level energy pipe network through the vapor outlet, the first energy recovery is realized, and the saturated water is discharged to the condensate recovery drum 3, because the saturated water also has a part of the vapor to be recovered, and further recovery is realized through the vapor ejector 2.
In this embodiment, the steam injector 2 forms the potential energy of the high pressure steam into high speed kinetic energy through the nozzle, and drives the suction low pressure steam to be fully mixed, speed-down and pressure-up in the mixing section of the injector for production.
The condensate tank 3 is used for recycling the condensate at the bottom of the condensate flash tank 1. Condensate generated by primary energy steam enters the condensate flash tank 1, and a steam outlet at the upper part of the condensate flash tank 1 is connected to a lower-level energy pipe network, so that primary energy recovery is realized. The lower discharge port of the condensate flash tank 1 is connected with a condensate recovery tank 3, and secondary utilization is realized in the condensate recovery tank 3.
The gas phase outlet of the condensate tank 3 is connected with the steam injector 2, the steam injector 2 is connected with a lower level energy pipe network, secondary steam energy generated in the condensate tank 3 is brought into a lower level steam pipe network by 1.2Mpa steam introduced by the steam injector 2 through the injector.
The bottom discharge of the condensate tank 3 is connected with a condensate recovery pump 4, and the condensate collected in the condensate tank is pumped into a condensate recovery system 5 by the condensate recovery pump 4.
In this embodiment, all be equipped with flowmeter and pressure transmitter on the pipeline of feed inlet 11 and discharge gate 12, can accurate measurement material velocity of flow and pressure through flowmeter and pressure transmitter, and then guarantee recovery efficiency.
A check valve and a pressure reducing valve are arranged on the pipeline in front of the feed inlet 11 of the condensate flash tank. The check valve can prevent material from mixing or flowing back, and recovery is affected. The flash pressure in the flash drum is controlled by the adjustment of a pressure reducing valve before entering the flash drum.
In this embodiment, the condensate flash tank is provided with two feed openings 11, and the steam outlet 13 of the condensate flash tank discharges 1.2Mpa steam through 9.8Mpa steam and 3.8Mpa steam respectively.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that the utility model is not limited to the particular embodiments, but is capable of numerous modifications and variations within the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a waste heat recovery device which characterized in that: the condensate flash evaporation device comprises a condensate flash evaporation tank, a steam ejector, a condensate tank and a condensate recovery pump, wherein a feed inlet for introducing steam to be recovered and a discharge outlet for discharging condensate are formed in the bottom of the condensate flash evaporation tank, a steam outlet is formed in the top of the condensate flash evaporation tank, the discharge outlet is connected to the condensate tank through a pipeline, an inlet of the steam ejector is connected with a gas phase outlet of the condensate tank and externally introduced with steam, an outlet of the steam ejector is connected to a pipeline on the steam outlet, and the condensate tank is connected to a condensate recovery system through the condensate recovery pump.
2. The waste heat recovery device according to claim 1, wherein: the condensate flash tank comprises a tank body, a demister arranged in the tank body, a feed inlet, a discharge outlet and a steam outlet which are arranged on the tank body, wherein the demister is of a net body structure and is arranged on the upper portion of the tank body, the feed inlet is positioned on the side wall of the tank body on the lower portion of the demister, the steam outlet is positioned on the top of the tank body, and the discharge outlet is positioned on the bottom of the tank body.
3. The waste heat recovery device according to claim 1, wherein: and the pipelines of the feed inlet and the discharge outlet are respectively provided with a flowmeter and a pressure transmitter.
4. The waste heat recovery device according to claim 1, wherein: and a check valve is arranged on a pipeline in front of the feed inlet of the condensate flash tank.
5. The waste heat recovery device according to claim 1, wherein: a pressure reducing valve is arranged on a pipeline in front of the feed inlet of the condensate flash tank.
6. The waste heat recovery device according to claim 1, wherein: the condensate flash tank is provided with two feed inlets, 9.8Mpa steam and 3.8Mpa steam are respectively passed through, and the steam outlet of condensate flash tank discharges 1.2Mpa steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320113252.XU CN219433214U (en) | 2023-01-18 | 2023-01-18 | Waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320113252.XU CN219433214U (en) | 2023-01-18 | 2023-01-18 | Waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219433214U true CN219433214U (en) | 2023-07-28 |
Family
ID=87332332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320113252.XU Active CN219433214U (en) | 2023-01-18 | 2023-01-18 | Waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219433214U (en) |
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2023
- 2023-01-18 CN CN202320113252.XU patent/CN219433214U/en active Active
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