CN212430821U - Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy - Google Patents

Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy Download PDF

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Publication number
CN212430821U
CN212430821U CN202020664765.6U CN202020664765U CN212430821U CN 212430821 U CN212430821 U CN 212430821U CN 202020664765 U CN202020664765 U CN 202020664765U CN 212430821 U CN212430821 U CN 212430821U
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China
Prior art keywords
water
boiler
gas
steam
flash tank
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Active
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CN202020664765.6U
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Chinese (zh)
Inventor
蒋海华
许建烨
连会强
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Jiangsu Fuchunjiang Environmental Protection Thermal Power Co ltd
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Jiangsu Fuchunjiang Environmental Protection Thermal Power Co ltd
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Priority to CN202020664765.6U priority Critical patent/CN212430821U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Abstract

The utility model relates to a be used for retrieving boiler and decide row's heat with energy-conserving waste heat recovery device, the flash tank is decided to arrange including the boiler, the catch water heat exchanger, gas-water separator, heat supply network return water system, the boiler is decided and is arranged the flash tank and have exhaust house steward and drain house steward, the steam inlet pipe connection of exhaust house steward and catch water heat exchanger, the play steam port of catch water heat exchanger and gas-water separator's steam inlet pipe connection, gas-water separator's drain house steward pipe connection and boiler are decided and are arranged the flash tank's of flash tank, gas-water heat exchanger's water inlet and make-up water piping connection, the drain house steward's delivery port and the drain house steward pipe line connection of boiler are decided and are arranged the flash tank, pass through valve and drain well pipe connection on the one hand, pass through. The waste heat recovery device for recovering the boiler constant heat emission to save energy contributes to energy conservation and emission reduction of a thermoelectric enterprise, and meanwhile, good economic benefits are generated for the enterprise.

Description

Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy
Technical Field
The utility model belongs to the technical field of the energy-conserving technique of boiler and specifically relates to a waste heat recovery device for retrieving boiler heat of surely arranging with energy-conservation.
Background
In order to implement the policy of building an environment-friendly and resource-saving society, the power generation is used as a technology-intensive industry, and the improvement of the energy efficiency of the power generation is firstly realized, so that the energy conservation and emission reduction are not only the requirements of the country on enterprises, but also an inevitable choice for the enterprises to pursue the maximization of the benefit. When the existing thermal power plant boiler normally operates, the periodic discharge capacity is large, a large amount of heat loss is caused by fixed discharge, and a large amount of condensed water is brought out, so that a large amount of heat energy and water resources are wasted, and the emission pollution is also brought.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the waste heat recovery device is used for recovering the constant heat emission quantity of the boiler to save energy, solves the problems pointed out in the background technology and achieves the purposes of energy conservation and emission reduction.
The utility model provides a technical scheme that its technical problem adopted is: a waste heat recovery device for recovering the heat of the boiler constant discharge to save energy comprises a boiler constant discharge flash tank and a steam-water heat exchanger, the boiler fixed-row flash tank is provided with an exhaust main pipe and a drainage main pipe, wherein the exhaust main pipe is connected with a steam inlet pipeline of the gas-water separator and is provided with a control valve, the exhaust main pipe is connected with a steam inlet pipeline of the gas-water heat exchanger, the steam outlet of the gas-water heat exchanger is connected with a steam inlet pipeline of the gas-water separator, a drainage port of the gas-water separator is connected with a drainage main pipe pipeline of the boiler fixed-row flash tank, a water inlet of the gas-water heat exchanger is connected with a water supplementing pipe, a water outlet of the gas-water heat exchanger is connected with a drainage main pipe of the boiler fixed-row flash tank, a water outlet of the drainage main pipe is connected with a drainage well pipeline through a valve, and the water outlet of the drainage main pipe is connected with a heat supply.
The working principle of the device is as follows: after boiler exhaust enters a boiler fixed-row flash tank, the boiler exhaust enters a steam-water heat exchanger through an exhaust main pipe, meanwhile, make-up water enters the steam-water heat exchanger through a make-up water pipe and exchanges heat with boiler exhaust entering the steam-water heat exchanger, the temperature and the pressure of the boiler exhaust after heat exchange are greatly reduced and enter a gas-water separator through a pipeline, moisture in the exhaust is separated and flows back to a drain main pipe, the make-up water heated by the boiler exhaust also flows into the drain main pipe, and mixed hot water in the drain main pipe can be pumped into a heat network water return system through a variable-frequency drain pump to be recycled and stored in a drain well. In the device, the boiler exhaust gas entering the boiler fixed-discharge flash tank can also directly enter the gas-water separator through the control valve to be dehydrated and exhausted.
Furthermore, the exhaust main pipe of the boiler fixed-discharge flash tank is connected with the steam inlet pipeline of the gas-water separator, and a safety valve is arranged on the pipeline.
The utility model has the advantages that: the waste heat recovery device for recovering the boiler constant heat emission to save energy contributes to energy conservation and emission reduction of a thermoelectric enterprise, and meanwhile, good economic benefits are generated for the enterprise.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. boiler fixed-row flash tank 1-1, exhaust main pipe 1-2, drain main pipe 2, steam-water heat exchanger 3, gas-water separator 4, heat supply network backwater system 5, control valve 6, safety valve 7, make-up water pipe 8, drain well 9, variable-frequency drain pump
Detailed Description
A waste heat recovery device for recovering boiler fixed exhaust heat to save energy is disclosed, as shown in figure 1, comprising a boiler fixed exhaust flash tank 1, a steam-water heat exchanger 2, a gas-water separator 3 and a heat supply network backwater system 4, wherein the boiler fixed exhaust flash tank 1 is provided with an exhaust main pipe 1-1 and a drain main pipe 1-2, the exhaust main pipe 1-1 is connected with a steam inlet pipeline of the gas-water separator 3 on one hand and is provided with a control valve 5 on the pipeline, on the other hand, the exhaust main pipe is connected with a steam inlet pipeline of the steam-water heat exchanger 2, a steam outlet of the steam-water heat exchanger 2 is connected with a steam inlet pipeline of the gas-water separator 3, a drain port of the gas-water separator 3 is connected with the drain main pipe 1-2 of the boiler fixed exhaust flash tank 1 through a pipeline, a water inlet of the steam-water heat exchanger 2 is connected with a water supply pipe 7, a water outlet of the steam, the water outlet of the drainage header pipe 1-2 is connected with a drainage well 8 through a valve on one hand and is connected with a heat supply network backwater system 4 through a valve and a variable frequency drainage pump 9 on the other hand.
The exhaust manifold 1-1 of the boiler fixed-discharge flash tank 1 is connected with the steam inlet pipeline of the gas-water separator 3 and is provided with a safety valve 6.
The working principle of the device is as follows: after boiler exhaust gas enters a boiler fixed-row flash tank 1, the boiler exhaust gas enters a steam-water heat exchanger 2 through an exhaust header pipe 1-1, meanwhile, make-up water enters the steam-water heat exchanger 2 through a make-up water pipe 7 and exchanges heat with the boiler exhaust gas entering the steam-water heat exchanger 2, the temperature and the pressure of the boiler exhaust gas after heat exchange are greatly reduced, the boiler exhaust gas enters a gas-water separator 3 through a pipeline, moisture in the exhaust gas is separated and flows back to a drain header pipe 1-2, the make-up water heated by the boiler exhaust gas also flows into the drain header pipe 1-2, and mixed hot water in the drain header pipe 1-2 can be pumped into a heat supply network backwater system 4 through a variable-frequency drain pump 9 for recycling and can also be directly discharged into a drain. In the device, the boiler exhaust gas entering the boiler fixed-discharge flash tank 1 can also directly enter the gas-water separator 3 through the control valve 5 for dehydration and exhaust.
The above embodiments are only used for explaining the present invention, and not for limiting the protection of the present invention, and any insubstantial changes made on the basis of the essential schemes of the present invention should fall within the protection scope of the present invention.

Claims (2)

1. The utility model provides a waste heat recovery device for retrieving boiler heat of surely discharging with energy-conservation which characterized in that: comprises a boiler fixed-row flash tank (1), a steam-water heat exchanger (2), a gas-water separator (3) and a heat supply network backwater system (4), wherein the boiler fixed-row flash tank (1) is provided with an exhaust main pipe (1-1) and a drain main pipe (1-2), the exhaust main pipe (1-1) is connected with a steam inlet pipeline of the gas-water separator (3) on the one hand and is provided with a control valve (5) on the pipeline, the exhaust main pipe is connected with a steam inlet pipeline of the steam-water heat exchanger (2) on the other hand, a steam outlet of the steam-water heat exchanger (2) is connected with a steam inlet pipeline of the gas-water separator (3), a drain opening of the gas-water separator (3) is connected with the drain main pipe (1-2) of the boiler fixed-row flash tank (1) through a pipeline, a water inlet of the steam-water heat exchanger (2) is connected with a water supply pipe (7), a water outlet of the steam-water heat exchanger (2, the water outlet of the drainage main pipe (1-2) is connected with a drainage well (8) through a valve on one hand and is connected with a heat supply network backwater system (4) through a valve and a variable-frequency drainage pump (9) on the other hand.
2. A waste heat recovery device for recovering heat rejected from a boiler to save energy according to claim 1, characterized in that: the exhaust main pipe (1-1) of the boiler fixed-row flash tank (1) is connected with the steam inlet pipeline of the gas-water separator (3) and a safety valve (6) is arranged on the pipeline.
CN202020664765.6U 2020-04-27 2020-04-27 Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy Active CN212430821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020664765.6U CN212430821U (en) 2020-04-27 2020-04-27 Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020664765.6U CN212430821U (en) 2020-04-27 2020-04-27 Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy

Publications (1)

Publication Number Publication Date
CN212430821U true CN212430821U (en) 2021-01-29

Family

ID=74295098

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020664765.6U Active CN212430821U (en) 2020-04-27 2020-04-27 Waste heat recovery device for recovering fixed exhaust heat of boiler to save energy

Country Status (1)

Country Link
CN (1) CN212430821U (en)

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