CN218494959U - System for recovering waste heat by using soft water - Google Patents
System for recovering waste heat by using soft water Download PDFInfo
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- CN218494959U CN218494959U CN202222421668.6U CN202222421668U CN218494959U CN 218494959 U CN218494959 U CN 218494959U CN 202222421668 U CN202222421668 U CN 202222421668U CN 218494959 U CN218494959 U CN 218494959U
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Abstract
The utility model provides a system for recovering waste heat by using soft water, which is characterized by comprising a production workshop, a steam-water heat exchanger, a heat preservation water storage tank, a first heat exchanger, a second heat exchanger, a water supplementing tank and a boiler; waste gas of a production workshop is connected to a steam-water heat exchanger through a steam pipe, and waste water of the workshop is communicated to a first heat exchanger through a waste water pump; the steam-water heat exchanger is communicated with the heat-preservation water storage tank through a steam-water pipe; the first heat exchanger is connected with the second heat exchanger through a low-temperature waste water pipe; the first heat exchanger is connected with the heat preservation water storage tank through a heating soft water pipe; the second heat exchanger is connected with the water replenishing tank and is communicated with the boiler through a water replenishing valve; the heat preservation water storage tank is communicated with the boiler through a heating water storage valve. The utility model discloses effectively utilize the used heat resource of workshop waste water waste gas, reduce waste water waste gas to the pollution of environment, ensured the stability and the security of system when having improved waste heat recovery efficiency.
Description
Technical Field
The utility model belongs to waste water waste heat recovery handles field, concretely relates to system for utilize soft water recovery used heat.
Background
In the production flow, when hot water is needed in a workshop, normal-temperature soft water is usually pumped into a boiler, and the soft water is heated by the boiler and then is sent to the required workshop for equipment operation. If the hot waste water used in the workshop is directly discharged without recycling, not only the heat resources are wasted, but also the environmental pollution is caused, and simultaneously the utilization efficiency of the boiler is also reduced. In the prior art, for example, the scheme provided in CN202092109U, the problems of no separate treatment of waste gas and waste water, low process safety, low recycling efficiency and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an utilize system of soft water recovery used heat aims at solving above-mentioned problem, improves and withdraws used heat efficiency, security.
The system for recovering waste heat by using soft water is characterized by comprising a waste water and waste gas supply workshop, a steam-water heat exchanger, a heat-preservation water storage tank, a first heat exchanger, a second heat exchanger, a water supplementing tank and a boiler.
A steam pipe is connected between the wastewater and waste gas supply workshop and the steam-water heat exchanger, a steam-water pipe is arranged in the steam-water heat exchanger, one end of the steam-water pipe extends out of the steam-water heat exchanger to be connected with an external soft water supply pipeline, and the other end of the steam-water pipe extends out of the steam-water heat exchanger and the heat-preservation water storage tank; the waste water and waste gas supply workshop is connected with one end of the first heat exchanger through a pipeline, and the other end of the first heat exchanger is connected with the second heat exchanger through a pipeline;
a heating soft water pipe is arranged in the first heat exchanger, one end of the heating soft water pipe extends out of the first heat exchanger to be connected with an external soft water supply pipeline, and the other end of the heating soft water pipe extends out of the first heat exchanger to be connected with a heat preservation water storage tank;
a water replenishing pipe is arranged in the second heat exchanger, one end of the water replenishing pipe extends out of the second heat exchanger to be connected with an external soft water supply pipeline, and the other end of the water replenishing pipe extends out of the second heat exchanger to be connected with a water replenishing tank;
the heat preservation water storage tank is connected with the boiler through a pipeline, the water replenishing tank is connected with the boiler through a pipeline, and the boiler is connected with a waste water and waste gas supply workshop through a pipeline.
Further, both the first heat exchanger and the second heat exchanger adopt shell-and-tube heat exchangers.
Furthermore, the steam-water heat exchanger is a steam-water plate heat exchanger, and the hot waste gas discharged from a workshop heats the soft water pumped by the steam-water soft water pump in the heat exchanger.
Further, preferably, a temperature sensor and a liquid level detector are installed in the heat preservation water storage tank. The device is used for detecting the state of heating soft water in the heat preservation water storage tank so as to ensure the stability of a recovery system.
Further, a heating soft water pump is installed at an inlet of the heating soft water pipe, and a waste water pump is installed on a pipeline between the waste water and waste gas supply workshop and the first heat exchanger. The inlet of the water replenishing pipe is provided with a water replenishing pump, and the inlet of the steam-water pipe is provided with a steam-water soft water pump.
Furthermore, a heat-preservation water storage valve is arranged on a connecting pipeline between the heat-preservation water storage tank and the boiler, and a water replenishing valve is arranged on a connecting pipeline between the water replenishing tank and the boiler.
Preferably, heating soft water pump, waste water pump, moisturizing pump, catch water soft water pump, moisturizing valve and heat preservation water storage valve all install flow detector, through to the control of pump and assist with flow detection, the flow of control soft water and workshop waste water promotes the heat conduction efficiency of workshop waste water and heating soft water.
The utility model has the advantages that:
1. the utility model discloses compare the file, separately handle the recovery with hot waste gas and hot waste water, improved recovery system's security.
2. Install temperature sensor and liquid level detector in heat preservation water tank to cooperation moisturizing case detects and controls the recovery flow, has improved this stability of retrieving soft water waste heat utilization system
3. The flow detection is installed at the positions of the waste water pump, the heating soft water pump and the water replenishing pump, the soft water flow in the recovery flow is detected and controlled, the heat conduction efficiency of the heat exchanger is improved, and the recovery efficiency of the recovered soft water waste heat utilization system is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the present invention.
Labeled as: 1. the system comprises a production workshop, 3, a steam-water heat exchanger, 4, a first heat exchanger, 5, a second heat exchanger, 6, a heat-preservation water storage tank, 7, a water supplementing tank, 8, a boiler, 9, a wastewater treatment unit, 10, a waste gas treatment unit, 21 a steam pipe, 22, a steam-water pipe, 23, a heating soft water pipe, 24, a low-temperature waste water pipe, 25, a water supplementing pipe, 201, a heating soft water pump, 202, a heat-preservation water storage valve, 203, a water supplementing pump, 204, a waste water pump, 205, a water supplementing valve, 206 and a steam-water soft water pump.
Detailed Description
As shown in fig. 1, a system for recovering waste heat by using soft water includes a production workshop 1, a steam-water heat exchanger 3, a first heat exchanger 4, a second heat exchanger 5, a heat-preservation water storage tank 6, a water replenishing tank 7, a boiler 8 and 2 heating soft water pump 201, a wastewater pump 204, a water replenishing pump 203, a steam-water soft water pump 206, a water replenishing valve 205 and a heat-preservation water storage valve 202, wherein a flow detection valve is installed on the water pump valve, the flow detection valve and the water pump valve are both monitored and controlled by a PLC controller, and the PLC controller is electrically connected with a controlled component.
Hot waste gas produced in a production workshop is sent into the steam-water heat exchanger 3 through the steam pipe 21, soft water is pumped into the steam-water heat exchanger 3 by the steam-water soft water pump, the soft water in the steam-water heat exchanger 3 is heated by the hot waste gas, the heated soft water is sent into the heat preservation water storage tank 6 through the steam-water pipe 22 to be stored, and the waste gas after heat exchange of the steam-water heat exchanger is discharged after being processed by the waste gas processing unit 10.
Waste water produced by the production workshop is pumped into the shell side of the first heat exchanger 4 through the waste water pump 204 to heat the tube side fluid of the first heat exchanger 4, wherein the tube side fluid of the first heat exchanger 4 is soft water pumped into the tube side of the first heat exchanger by the heating soft water valve 201, and the tube side fluid heated by the shell side fluid is sent into the heat preservation water storage tank 6 through the heating soft water pipe 23 to be stored.
After heating the shell-side fluid of the first heat exchanger 4, the shell-side fluid flows into the shell side of the second heat exchanger 5 through the low-temperature waste water pipe 24, the shell-side fluid of the second heat exchanger is reused at low temperature to heat the tube-side fluid of the second heat exchanger 5, wherein the tube-side fluid of the second heat exchanger is pumped into the tube side by the water replenishing pump 203, the heated tube-side fluid enters the water replenishing tank 7 through the water replenishing pipe 25, and the shell-side fluid of the second heat exchanger 5 flows into the waste water treatment unit 9 from the shell-side outlet after heat exchange and is discharged after treatment.
The stored heating soft water in the heat preservation water storage tank 6 flows into the boiler 8 through the heat preservation water storage valve 202, when the flow on the heat preservation water storage valve 202 detects that the heating soft water is not enough for the boiler to use, the water supplementing valve 205 flows the soft water in the water supplementing tank 7 into the boiler 8 to meet the boiler work, and the boiler heats the recovered soft water to the temperature meeting the workshop requirement and then sends the recovered soft water into the workshop.
The flow detection is installed at the positions of the waste water pump, the heating soft water pump and the water replenishing pump, the soft water flow in the recovery flow is detected and controlled, the heat conduction efficiency of the heat exchanger is improved, and the recovery efficiency of the recovered soft water waste heat utilization system is improved.
The system flow is in operation, hot waste water and hot waste gas are produced in the production workshop 1. Hot waste gas in a workshop is led to the steam-water heat exchanger 3 through a steam pipe 21, soft water pumped into the steam-water heat exchanger by a steam-water soft water pump 206 is heated, and the heated soft water is conveyed to the heat preservation water storage tank 6 through a steam-water pipe 22; hot waste water in the workshop is pumped into the shell side of the first heat exchanger 4 through the waste water pump, soft water pumped into the shell side of the first heat exchanger by the heating soft water pump 201 is arranged in the tube side of the first heat exchanger, and the soft water heated by the first heat exchanger 4 is stored in the heat preservation water storage tank 6 through the heating soft water tube 23. The low-temperature wastewater flowing out of the shell pass of the first heat exchanger 4 flows into the second heat exchanger 5 through the low-temperature wastewater pipe 24 for secondary utilization, soft water fed by the water feeding pump 203 is fed into the tube pass of the second heat exchanger 4, and the soft water fed by the second heat exchanger 5 is fed into the water feeding tank 7 through the water feeding pipe 25. The heating soft water in the heat preservation water storage tank 6 and the soft water replenishing water in the water replenishing tank 7 supply water to the boiler together, and waste water and waste gas produced in a workshop are recycled and utilized.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A system for recovering waste heat by using soft water is characterized by comprising a waste water and waste gas supply workshop (1), a steam-water heat exchanger (3), a heat preservation water storage tank (6), a first heat exchanger (4), a second heat exchanger (5), a water supplementing tank (7) and a boiler (8);
a steam pipe (21) is connected between the wastewater and waste gas supply workshop (1) and the steam-water heat exchanger (3), a steam-water pipe (22) is arranged in the steam-water heat exchanger (3), one end of the steam-water pipe (22) extends out of the steam-water heat exchanger (3) to be connected with an external soft water supply pipeline, and the other end of the steam-water pipe extends out of the steam-water heat exchanger (3) and a heat-preservation water storage tank (6); the waste water and waste gas supply workshop (1) is connected with one end of the first heat exchanger (4) through a pipeline, and the other end of the first heat exchanger (4) is connected with the second heat exchanger (5) through a pipeline;
a heating soft water pipe (23) is arranged in the first heat exchanger (4), one end of the heating soft water pipe (23) extends out of the first heat exchanger (4) to be connected with an external soft water supply pipeline, and the other end of the heating soft water pipe extends out of the first heat exchanger (4) to be connected with a heat preservation water storage tank (6);
a water replenishing pipe (25) is arranged in the second heat exchanger (5), one end of the water replenishing pipe (25) extends out of the second heat exchanger (5) to be connected with an external soft water supply pipeline, and the other end of the water replenishing pipe extends out of the second heat exchanger (5) to be connected with a water replenishing tank (7);
the heat preservation water storage tank (6) is connected with the boiler (8) through a pipeline, the water replenishing tank (7) is connected with the boiler (8) through a pipeline, and the boiler (8) is connected with the waste water and waste gas supply workshop (1) through a pipeline.
2. The system for recovering waste heat using soft water according to claim 1, wherein the first heat exchanger (4) and the second heat exchanger (5) are each a shell-and-tube heat exchanger.
3. The system for recovering waste heat using soft water according to claim 1, wherein the steam-water heat exchanger (3) is a steam-water plate heat exchanger.
4. The system for recovering waste heat using soft water according to claim 1, wherein the thermal storage tank (6) is provided with a temperature sensor and a liquid level detector.
5. The system for recovering waste heat using soft water according to claim 1, wherein the heating soft water pump (201) is installed at an inlet of the heating soft water pipe (23), the waste water pump (204) is installed on a pipeline between the waste water and waste gas supply plant (1) and the first heat exchanger (4), the water replenishing pump (203) is installed at an inlet of the water replenishing pipe (25), and the steam soft water pump (206) is installed at an inlet of the steam water pipe (22).
6. The system for recovering waste heat by using soft water according to claim 1, wherein a heat-preservation water storage valve (202) is arranged on a connecting pipeline between the heat-preservation water storage tank (6) and the boiler (8), and a water supplementing valve (205) is arranged on a connecting pipeline between the water supplementing tank (7) and the boiler (8).
7. The system for recovering waste heat by using soft water according to claim 5, wherein the flow detectors are mounted on the heating soft water pump (201), the waste water pump (204), the water supplementing pump (203), the steam-water soft water pump (206), the water supplementing valve (205) and the heat-preservation water storage valve (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222421668.6U CN218494959U (en) | 2022-09-13 | 2022-09-13 | System for recovering waste heat by using soft water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222421668.6U CN218494959U (en) | 2022-09-13 | 2022-09-13 | System for recovering waste heat by using soft water |
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| Publication Number | Publication Date |
|---|---|
| CN218494959U true CN218494959U (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222421668.6U Active CN218494959U (en) | 2022-09-13 | 2022-09-13 | System for recovering waste heat by using soft water |
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| CN (1) | CN218494959U (en) |
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- 2022-09-13 CN CN202222421668.6U patent/CN218494959U/en active Active
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