CN104848236A - Boiler smoke waste heat recovery device - Google Patents

Boiler smoke waste heat recovery device Download PDF

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Publication number
CN104848236A
CN104848236A CN201510208486.2A CN201510208486A CN104848236A CN 104848236 A CN104848236 A CN 104848236A CN 201510208486 A CN201510208486 A CN 201510208486A CN 104848236 A CN104848236 A CN 104848236A
Authority
CN
China
Prior art keywords
boiler
heat exchanger
heat
pipeline
heating power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510208486.2A
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Chinese (zh)
Inventor
李明祥
朱冬宏
陈道祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Jin Yuan Teng Feng Heat-Exchange Equipment Co Ltd
Original Assignee
Jiangsu Jin Yuan Teng Feng Heat-Exchange Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Jin Yuan Teng Feng Heat-Exchange Equipment Co Ltd filed Critical Jiangsu Jin Yuan Teng Feng Heat-Exchange Equipment Co Ltd
Priority to CN201510208486.2A priority Critical patent/CN104848236A/en
Publication of CN104848236A publication Critical patent/CN104848236A/en
Pending legal-status Critical Current

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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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention provides a boiler smoke waste heat recovery device. The boiler smoke waste heat recovery device comprises a steam boiler and a sulfur and nitrate removal device, wherein a closed cycle heat exchanger and a heating power exchanger are installed on a smoke discharge port of the sulfur and nitrate removal device through a pipeline in a connection mode, an air outlet of the heating power exchanger is connected with a heat source inlet of a roller dryer through a pipeline, the closed cycle heat exchanger is connected with a heat exchanger installed in a condensation water pipeline through a heat exchange pipeline, the condensation water pipeline is led out through a condensation water tank, and a heating port of a thermal oxygen extractor is connected with the heating power exchanger through a heat exchange pipe. The boiler smoke waste heat recovery device fully recovers boiler smoke waste heat, significantly improves water feeding temperature of condensation water, enables the water feeding temperature of the condensation water to reach 90-95 degree centigrade, guides the condensation water after being preheated into a boiler so as to effectively reduce energy consumption of the boiler, can reduce discharge temperature of smoke below dew point temperature, reduces emission of harmful gas in the smoke of the boiler, and achieves dual purposes of energy conservation and emission reduction.

Description

Boiler smoke-gas residual-heat recovering device
Technical field
The present invention relates to a kind of waste-heat recovery device, specifically a kind of boiler smoke-gas residual-heat recovering device, belong to heat recovery technology field.
Background technology
At present, there is high fume temperature in industrial boiler operation process, insufficient, the problem such as boiler thermal output is low of burning, the flue gas of domestic most of fuel oils, combustion gas, coal-burning boiler is directly disposed in air after desulphurization denitration, often some waste heat does not reclaim, this a part of energy is made full use of waste heat air and water, improve air themperature and feed temperature, can fuel utilization efficiency be improved to a certain extent; And aging along with desulphurization denitration equipment, its desulfurization off sulfide effect go fromes bad to worse, and so not only causes the significant wastage of the energy but also ambient air is produced to the pollution of very severe.
Summary of the invention
Technical problem to be solved by this invention is, proposes a kind of boiler smoke-gas residual-heat recovering device, utilizes the matching relationship between boiler and economizer, can improve the waste heat recovery efficiency of gas fired-boiler, and can avoid producing adverse consequences to boiler.
The present invention solves the technical scheme of above technical problem: provide a kind of boiler smoke-gas residual-heat recovering device, comprise steam boiler, the exhaust opening of described steam boiler installs electrostatic precipitator and desulfuring and denitrifying apparatus successively, the exhaust opening place of described desulfuring and denitrifying apparatus is connected and installed closed loop heat exchanger and heating power interchanger by pipeline, the gas outlet of described heating power interchanger is connected with the thermal source import of roller drier by pipeline, and the gas outlet of described roller drier is connected with chimney through air-introduced machine; Described closed loop heat exchanger is connected with the heat exchanger be arranged in condensate line by heat exchanging pipe, and described condensing water conduit is drawn by condensate water water tank, by leading to the water inlet of boiler after thermal deaerator, water-delivery pump, heater and heat exchanger; The heating gate of described thermal deaerator is connected with described heating power interchanger by heat exchanger tube.
Further restriction technical scheme of the present invention, aforesaid boiler smoke-gas residual-heat recovering device, be provided with two groups of heaters in described condensate line altogether, and these two groups heating form parallel circulating loop, at the two ends mounted valve in this parallel circulating loop with heat exchanger and water-delivery pump.
Aforesaid boiler smoke-gas residual-heat recovering device, in order to prevent carry in roller drier, directly discharge causes contaminated environment, and the pipeline therefore between described air-introduced machine and roller drier is provided with cyclone dust collectors.
Aforesaid boiler smoke-gas residual-heat recovering device, all installs heat-source Cycles pump in the heat exchanging pipe of described thermal deaerator and heat exchanger, to guarantee that the efficiency of cycle maximizes.
Further, aforesaid boiler smoke-gas residual-heat recovering device, described closed loop heat exchanger and heating power interchanger all adopt heat exchanger housing of tube.
Beneficial effect of the present invention: boiler afterheat recovering device of the present invention, abundant recovery boiler fume afterheat, significantly improves the feed temperature of condensate water, makes it can reach 90 DEG C-95 DEG C, the condensate water after preheating is passed into the energy resource consumption effectively reducing boiler in boiler; The exhaust temperature of flue gas can be dropped to below dew point, reduce the discharge of pernicious gas in boiler smoke, reach the dual purpose of energy-saving and emission-reduction.Through Site Test Analysis, boiler afterheat recovering device achieves the re-set target improving boiler thermal output 11%-14%.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention general flow chart.
Detailed description of the invention
embodiment 1
The present embodiment is a kind of boiler smoke-gas residual-heat recovering device, as shown in Figure 1, comprise steam boiler 1, the exhaust opening of steam boiler installs electrostatic precipitator 2 and desulfuring and denitrifying apparatus 3 successively, the exhaust opening place of desulfuring and denitrifying apparatus is connected and installed closed loop heat exchanger 4 and heating power interchanger 5 by pipeline, the gas outlet of heating power interchanger 5 is connected with the thermal source import of roller drier 6 by pipeline, the gas outlet of roller drier connects cyclone dust collectors 7, and the outlet of cyclone dust collectors is connected with chimney 9 through air-introduced machine 8; Closed loop heat exchanger 4 is connected with the heat exchanger 10 be arranged in condensate line by heat exchanging pipe, condensing water conduit is drawn by condensate water water tank 11, by leading to the water inlet of boiler 1 after thermal deaerator 12, water-delivery pump 13, heater 14 and heat exchanger 10; The heating gate of thermal deaerator 12 is connected with heating power interchanger 5 by heat exchanger tube, all installs heat-source Cycles pump 15 in the heat exchanging pipe of thermal deaerator and heat exchanger, to guarantee that the efficiency of cycle maximizes.
Two groups of heaters are provided with altogether in the condensate line of the present embodiment, and these two groups heating form parallel circulating loop with heat exchanger and water-delivery pump, at the two ends mounted valve in this parallel circulating loop, condensate water can be regulated to enter the water temperature of boiler by the aperture of control valve; In addition owing to carrying out drying brown coal by high-temperature flue gas, to improve the utilization rate of brown coal and to reduce the temperature of flue gas, in order to prevent taking coal dust out of in roller drier, directly discharge causes contaminated environment, and the pipeline therefore between air-introduced machine and roller drier is provided with cyclone dust collectors.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.

Claims (5)

1. boiler smoke-gas residual-heat recovering device, comprise steam boiler, the exhaust opening of described steam boiler installs electrostatic precipitator and desulfuring and denitrifying apparatus successively, it is characterized in that: the exhaust opening place of described desulfuring and denitrifying apparatus is connected and installed closed loop heat exchanger and heating power interchanger by pipeline, the gas outlet of described heating power interchanger is connected with the thermal source import of roller drier by pipeline, and the gas outlet of described roller drier is connected with chimney through air-introduced machine; Described closed loop heat exchanger is connected with the heat exchanger be arranged in condensate line by heat exchanging pipe, and described condensing water conduit is drawn by condensate water water tank, by leading to the water inlet of boiler after thermal deaerator, water-delivery pump, heater and heat exchanger; The heating gate of described thermal deaerator is connected with described heating power interchanger by heat exchanger tube.
2. boiler smoke-gas residual-heat recovering device as claimed in claim 1, it is characterized in that: in described condensate line, be provided with two groups of heaters altogether, and these two groups heating form parallel circulating loop, at the two ends mounted valve in this parallel circulating loop with heat exchanger and water-delivery pump.
3. boiler smoke-gas residual-heat recovering device as claimed in claim 1, is characterized in that: the pipeline between described air-introduced machine and roller drier is provided with cyclone dust collectors.
4. boiler smoke-gas residual-heat recovering device as claimed in claim 1, is characterized in that: all install heat-source Cycles pump in the heat exchanging pipe of described thermal deaerator and heat exchanger.
5. boiler smoke-gas residual-heat recovering device as claimed in claim 1, is characterized in that: described closed loop heat exchanger and heating power interchanger all adopt heat exchanger housing of tube.
CN201510208486.2A 2015-04-28 2015-04-28 Boiler smoke waste heat recovery device Pending CN104848236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510208486.2A CN104848236A (en) 2015-04-28 2015-04-28 Boiler smoke waste heat recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510208486.2A CN104848236A (en) 2015-04-28 2015-04-28 Boiler smoke waste heat recovery device

Publications (1)

Publication Number Publication Date
CN104848236A true CN104848236A (en) 2015-08-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510208486.2A Pending CN104848236A (en) 2015-04-28 2015-04-28 Boiler smoke waste heat recovery device

Country Status (1)

Country Link
CN (1) CN104848236A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115286A (en) * 2015-08-21 2015-12-02 广西立盛茧丝绸有限公司 Drying device utilizing waste heat of boiler flue gas
CN105749709A (en) * 2016-05-06 2016-07-13 江苏金源腾峰换热设备有限公司 Boiler flue gas purifying and heat exchanging device and application method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115286A (en) * 2015-08-21 2015-12-02 广西立盛茧丝绸有限公司 Drying device utilizing waste heat of boiler flue gas
CN105749709A (en) * 2016-05-06 2016-07-13 江苏金源腾峰换热设备有限公司 Boiler flue gas purifying and heat exchanging device and application method thereof

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150819