CN203273857U - Flue gas waste heat recovery device of boiler - Google Patents

Flue gas waste heat recovery device of boiler Download PDF

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Publication number
CN203273857U
CN203273857U CN 201320156495 CN201320156495U CN203273857U CN 203273857 U CN203273857 U CN 203273857U CN 201320156495 CN201320156495 CN 201320156495 CN 201320156495 U CN201320156495 U CN 201320156495U CN 203273857 U CN203273857 U CN 203273857U
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China
Prior art keywords
flue gas
water
boiler
heat exchanger
heat
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Application number
CN 201320156495
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Chinese (zh)
Inventor
蔡建平
张毅
历勇
刘士伟
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Dalian Shenghe Automatic Control Technology Co., Ltd.
Original Assignee
蔡建平
张毅
历勇
刘士伟
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Priority to CN 201320156495 priority Critical patent/CN203273857U/en
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Publication of CN203273857U publication Critical patent/CN203273857U/en
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Abstract

The utility model relates to a flue gas waste heat recovery device of a boiler, and belongs to the field of energy conservation devices. The flue gas waste heat recovery device is added in an original boiler flue, and flue gas waste heat is effectively used by the aid of an efficient full heat recovery exchanger, so that the flue gas temperature is reduced, inflow water of 60 DEG C of a deoxidization device is heated to 110 DEG C to become hot water, and the hot water returns to a deoxidization box and can be used for other production or subsidiary production of a factory; and a great amount of heat in the removed flue gas is recycled, and the boiler heat efficiency is remarkably improved, so that the boiler heat efficiency reaches or approaches 95%. Substantial economic benefits are brought to users. The flue gas waste heat recovery device has excellent environmental protection performance. When water vapor in the flue gas condensates, poisonous substances in the removed flue gas condense, and the condensed water is weakly acidic; and the condensed water can be used as recycled water after neutralizing treatment.

Description

A kind of boiler smoke-gas residual-heat recovering device
Technical field
The utility model relates to a kind of waste-heat recovery device, specifically relates to a kind of flue gas waste heat recovery apparatus that existing boiler is improved, and belongs to the energy-saving equipment field.
Background technology
Most boilers of domestic use, the design exhaust gas temperature of Central Air-Conditioner are all more than 150 ℃, and steam boiler is up to 220 ℃.This be for the acidic materials such as NOx compound avoiding containing sulphur in fuel and produce in combustion process less than 150 ℃ the time, it produces acid cure knot and corrosion back-end surfaces at the heating surface afterbody.The back-end surfaces strength decreased, the harm safe operation of the boiler is scrapped boiler in advance.So the design exhaust gas temperature of domestic and external conventional Methods of Oil-Gas Fired Boiler is generally greater than 150 ℃, the thermal efficiency is generally 70~85%.Caused a large amount of smoke evacuation sensible heat and latent heat to be wasted in vain.The heat output of fuel that uses in the present heating power calculating standard of China all refers to the low heat valve of fuel, and low heat valve is disregarded latent heat.But when we used natural gas to act as a fuel, because it contains a large amount of hydrogen, its latent heat and sensible heat were appreciable, thereby the utilization of latent heat and sensible heat becomes the focus that people pay close attention to.
Summary of the invention
Problem in view of the prior art existence, the purpose of this utility model is that a kind of condenser boiler flue gas waste heat recovery apparatus will be provided, it installs flue gas waste heat recovery apparatus additional at original boiler flue, reclaim heat exchanger through high efficiency full heat, effectively utilize fume waste heat, flue-gas temperature is reduced, and 60 ℃ of water inlets of deaeration plant are heated to 110 ℃ of hot water turn back to the deoxygenation case, can be used as other productions of factory or attached production hot water.
For achieving the above object, the technical scheme that the utility model adopts is a kind of boiler smoke-gas residual-heat recovering device, it comprises: steam boiler, steam water heat exchanger, deoxygenation water tank, drive train and and valve, it is characterized in that: it also comprises flue gas heat-recovering device; Steam boiler is connected by jet chimney with heat exchanger, drive train is connected with the driving water pipe with return pipe, return pipe is connected with the steam water heat exchanger respectively with the driving water pipe, return pipe is connected with flue gas recovery device respectively with the driving water pipe, and the steam water heat exchanger is connected with the deoxygenation water tank by condensate pipe; Steam boiler is connected with flue gas recovery device by smoke exhaust pipe, and drive train is connected with flue gas recovery device; Described flue gas recovery device comprises: smoke filter and heat-exchangers of the plate type; Flue is connected with smoke filter, and smoke filter is connected with plate type heat exchanger, and plate type heat exchanger is connected with outlet pipe with water inlet pipe.
The course of work of the present utility model is as follows: steam boiler steam enters the steam water heat exchanger by jet chimney, drive train part backwater enters the steam water heat exchanger by return pipe, heat exchange in the steam water heat exchanger, steam-condensation is that condensed water enters the deoxygenation water tank by condensate pipe, and backwater heats up and enters drive train by driving water pipe; Steam boiler discharging flue gas enters flue gas recovery device by smoke exhaust pipe, a part of backwater of drive train enters flue gas recovery device by return pipe, the heat exchange in flue gas heat-recovering device of flue gas and backwater, flue gas is discharged flue gas recovery device, enters drive train by driving water pipe after backwater heats up.
Described flue gas recovery device comprises: smoke filter and heat-exchangers of the plate type; Flue gas enters smoke filter by flue, entering plate type heat exchanger by flue, plate type heat exchanger is connected with outlet pipe with water inlet pipe, flue gas carries out exchange heat with the supplementing water that enters plate type heat exchanger by water inlet pipe, flue gas after heat exchange is discharged plate type heat exchanger by flue, and after heat exchange, supplementing water is discharged plate type heat exchanger by outlet pipe.
The utility model has the advantage of: it installs flue gas waste heat recovery apparatus additional at original boiler flue, reclaim heat exchanger through high efficiency full heat, effectively utilize fume waste heat, flue-gas temperature is reduced, and 60 ℃ of water inlets of deaeration plant are heated to 110 ℃ of hot water turn back to the deoxygenation case, can be used as other productions of factory or attached production hot water; Fully a large amount of energy recovery in smoke evacuation, significantly improve boiler thermal output, boiler thermal output is reached or near 95%.For the user brings considerable economic benefit.Use this device to have outstanding environmental-protecting performance.When the water vapor condensation in flue gas, the harmful substance in smoke evacuation condenses with condensed water, and condensed water is faintly acid; Can be used as middle water after neutralisation treatment uses.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of flue gas recovery device;
In figure: 1, steam boiler, 2, jet chimney, 3, condensate pipe, 4, the deoxygenation water tank, 5, steam water heat exchanger, 6, drive water pipe, 7, return pipe, 8, flue gas heat-recovering device, 9, lithium bromide unit, 10, smoke exhaust pipe, 11, smoke filter, 12, plate type heat exchanger.
The specific embodiment
In order further to understand this boiler smoke-gas residual-heat recovering device, by reference to the accompanying drawings, be described further as an example of the lithium bromide unit example.
A kind of boiler smoke-gas residual-heat recovering device, it comprises: steam boiler 1, steam water heat exchanger 5, deoxygenation water tank 4, lithium bromide unit 9 and and valve, it is characterized in that: it also comprises flue gas heat-recovering device 8; Steam boiler 1 steam enters steam water heat exchanger 5 by jet chimney 2, the a part of backwater of lithium bromide unit 9 enters steam water heat exchanger 5 by return pipe 7, in the interior heat exchange of steam water heat exchanger 5, steam-condensation is that condensed water enters deoxygenation water tank 4 by condensate pipe 3, and backwater heats up and enters lithium bromide unit 9 by driving water pipe 6; Steam boiler 1 discharging flue gas enters flue gas recovery device 8 by smoke exhaust pipe 10, a part of backwater of lithium bromide unit 9 enters flue gas recovery device 8 by return pipe 7, flue gas and backwater are in the interior heat exchange of flue gas heat-recovering device 8, flue gas is discharged flue gas recovery device 8, enters lithium bromide unit 9 by driving water pipe 6 after backwater heats up; Described flue gas recovery device 8 comprises smoke filter 11 and plate type heat exchanger 12; Flue gas enters smoke filter 11 by flue, entering plate type heat exchanger 12 by flue, plate type heat exchanger 12 is connected with outlet pipe with water inlet pipe, flue gas carries out exchange heat with the supplementing water that enters plate type heat exchanger 12 by water inlet pipe, flue gas after heat exchange is discharged plate type heat exchanger 12 by flue, and after heat exchange, supplementing water is discharged plate type heat exchanger 12 by outlet pipe.

Claims (1)

1. boiler smoke-gas residual-heat recovering device, it comprises: steam boiler, steam water heat exchanger, deoxygenation water tank, drive train and and valve, it is characterized in that: it also comprises flue gas heat-recovering device; Steam boiler is connected by jet chimney with heat exchanger, drive train is connected with the driving water pipe with return pipe, return pipe is connected with the steam water heat exchanger respectively with the driving water pipe, return pipe is connected with flue gas recovery device respectively with the driving water pipe, and heat exchanger is connected with the deoxygenation water tank by condensate pipe; Steam boiler is connected with flue gas recovery device by smoke exhaust pipe, and drive train is connected with flue gas recovery device; Described flue gas recovery device comprises: smoke filter and heat-exchangers of the plate type; Flue is connected with smoke filter, and smoke filter is connected with plate type heat exchanger, and plate type heat exchanger is connected with outlet pipe with water inlet pipe.
CN 201320156495 2013-04-01 2013-04-01 Flue gas waste heat recovery device of boiler Active CN203273857U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320156495 CN203273857U (en) 2013-04-01 2013-04-01 Flue gas waste heat recovery device of boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320156495 CN203273857U (en) 2013-04-01 2013-04-01 Flue gas waste heat recovery device of boiler

Publications (1)

Publication Number Publication Date
CN203273857U true CN203273857U (en) 2013-11-06

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CN 201320156495 Active CN203273857U (en) 2013-04-01 2013-04-01 Flue gas waste heat recovery device of boiler

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135669A (en) * 2015-10-08 2015-12-09 哈尔滨敬宇民用锅炉科技有限公司 Double-effect energy-saving civilian hot water boiler
CN108980813A (en) * 2017-06-02 2018-12-11 寰慧科技集团有限公司 A kind of flue gas waste heat recovery apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135669A (en) * 2015-10-08 2015-12-09 哈尔滨敬宇民用锅炉科技有限公司 Double-effect energy-saving civilian hot water boiler
CN108980813A (en) * 2017-06-02 2018-12-11 寰慧科技集团有限公司 A kind of flue gas waste heat recovery apparatus

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20190703

Address after: Room B209, Block A, 350 Changchun Road, Xigang District, Dalian City, Liaoning Province, 116000

Patentee after: Dalian Shenghe Automatic Control Technology Co., Ltd.

Address before: Room 1204, Unit 2, Block C, 39 Jixian North Street, Shahekou District, Dalian City, Liaoning Province

Co-patentee before: Zhang Yi

Patentee before: Cai Jianping

Co-patentee before: Li Yong

Co-patentee before: Liu Shiwei

TR01 Transfer of patent right