CN204648188U - The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank - Google Patents

The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank Download PDF

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Publication number
CN204648188U
CN204648188U CN201520268192.4U CN201520268192U CN204648188U CN 204648188 U CN204648188 U CN 204648188U CN 201520268192 U CN201520268192 U CN 201520268192U CN 204648188 U CN204648188 U CN 204648188U
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China
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boiler
convection bank
heat exchange
furnace
tube
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Withdrawn - After Issue
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CN201520268192.4U
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Chinese (zh)
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鲍守明
陈懿修
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Individual
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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
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model relates to the longitudinal heat exchange type water-tube boiler of a kind of membrane wall brick baffle screwed pipe convection bank, it comprises boiler furnace (7), each convection bank brick baffle (8) is membrane wall training wall respectively, convection bank (4) is made up of many screwed pipes, boiler furnace (7) is also provided with thread pipe air preheater and threaded flue economizer combination unit (9) and cyclone dust collectors (10), the smoke inlet of combination unit (9) is connected with the exhanst gas outlet of boiler furnace (7), the smoke inlet of cyclone dust collectors (10) is connected with the exhanst gas outlet of combination unit (9).It is few that it has equipment investment, good energy saving property, and heat exchange efficiency is high, the advantage of fuel saving and the energy.The brick baffle adopting membrane wall brick baffle replacement refractory material to make, can improve sealing and the energy-saving effect of boiler.The convection bank that screwed pipe is made adds the longitudinal heat transfer effect of boiler convection tube, makes boiler fuel saving more, realizes energy-saving and cost-reducing.

Description

The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank
Technical field
The utility model relates to heating equipment, is specifically related to the longitudinal heat exchange type water-tube boiler of a kind of convection bank.
Background technology
The sidewall of the longitudinal heat exchange type water-tube boiler of common convection bank is made up of bare-tube wall pipe and the refractory wall be positioned at outside water screen tube, the weight and volume of boiler is relatively large, the consumption of refractory material is also more, equipment investment is larger, the sealing of the furnace wall that refractory material is made is good not, easily crack, air leakage coefficient cause greatly the heat in burner hearth meaningless scatter and disappear, have influence on the energy saving of boiler.Occurred that membrane wall furnace wall efficiently solved this problem afterwards, but the brick baffle making flue gas turn back up and down in this boiler remains and is formed by laying fireproof bricks, the gap of convection bank is smaller, workmen cannot enter and build by laying bricks or stones, by instrument, refractory brick can only be pushed away to the inside one by one, build by laying bricks or stones very inconvenient, speed of application is also slow, not only waste of manpower but also be difficult to ensure the quality of products.The poor sealing of the brick baffle of laying fireproof bricks, easily causes flue gas short circuit, wastes the heating surface of boiler.Reduce although the flue gas in this boiler washes away the resistance that flue gas can be made to be subject to along the following current of convection bank axis vertical, to make in convection bank not easily dust stratification, but due to the smooth surface of convection bank, the coefficient of heat transfer between convection bank with flue gas is relative also lower, the efficiency wanting to reach boiler just needs the quantity increasing convection tube, can increase steel quantity consumption.Because heat exchange efficiency is lower, boiler discharge flue-gas temperature also higher, cause boiler not fuel saving, waste energy.
Summary of the invention
It is few that the purpose of this utility model is to provide a kind of equipment investment, good energy saving property, and heat exchange efficiency is high, the longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank of fuel saving and the energy.
Technical solution of the present utility model is: it includes monowall tube, upper drum, lower drum, longitudinal convection bank, convection bank longitudinal heat exchange type water-tube boiler body of heater of coal bunker and fire grate, the burner hearth of boiler furnace and the furnace wall of secondary furnace are the closed furnace wall be made up of pattern water screen tube respectively, longitudinally to be located at each convection bank brick baffle of convection bank position between upper drum and lower drum be by many convection tubes respectively and be welded on the membrane wall training wall that the steel plate between adjacent convection tube forms, the screwed pipe that convection bank is connected with lower drum with upper drum respectively by about many two ends is formed, boiler furnace is also provided with thread pipe air preheater and threaded flue economizer combination unit and cyclone dust collectors, thread pipe air preheater is connected with the exhanst gas outlet of boiler furnace with the smoke inlet of threaded flue economizer combination unit, cool air inlet is connected with the outer air of boiler furnace, hot air outlet is connected with the boiler furnace air compartment below fire grate by air blast, water inlet is connected with the water return pipeline that supplies of boiler furnace respectively by pipeline with delivery port, the smoke inlet of cyclone dust collectors is connected with the exhanst gas outlet of thread pipe air preheater with threaded flue economizer combination unit, the exhanst gas outlet of cyclone dust collectors is connected by the outer dust arrester installation of pipeline and boiler furnace.
Technique effect of the present utility model is: it is few that it has equipment investment, good energy saving property, and heat exchange efficiency is high, the advantage of fuel saving and the energy.The brick baffle that heat convection structure adopts membrane wall brick baffle replacement refractory material to make, can make each convection current cigarette journey better tightness of boiler, and solve the difficult problem of building by laying bricks or stones of refractory brick, can improve sealing and the energy-saving effect of boiler.The convection bank that screwed pipe is made adds the longitudinal heat transfer effect of boiler convection tube, and the heat exchange efficiency of boiler can be made greatly to improve, make boiler fuel saving more, the flue-gas temperature of discharge also can decline, and realizes energy-saving and cost-reducing.Flue gas washes away the resistance that can reduce flue gas and be subject to along convection bank following current, convection heating surface not easily ties ash, reduces the operating cost of the frequent deashing of boiler.The flue gas of boiler tail is lowered the temperature and cyclone dust collectors dedusting through thread pipe air preheater and threaded flue economizer combination unit, flue-gas temperature and dust content all significantly reduce, more easily realize the environmental requirement of qualified discharge after other dust arrester installation dedusting.The overall weight of this boiler has and significantly alleviates, and cost is lower, is suitable for extensive promotion and application.
Accompanying drawing explanation
Fig. 1 is the utility model perspective structure figure.
Detailed description of the invention
As shown in Figure 1, it includes monowall tube 1, upper drum 2, lower drum 3, longitudinal convection bank 4, convection bank longitudinal heat exchange type water-tube boiler body of heater 7 of coal bunker 5 and fire grate 6, the burner hearth 71 of boiler furnace 7 and the furnace wall of secondary furnace 73 are the closed furnace wall be made up of pattern water screen tube 1 respectively, longitudinally to be located at each convection bank brick baffle 8 of convection bank 4 position between upper drum 2 and lower drum 3 be by many convection tubes 41 respectively and be welded on the membrane wall training wall that the steel plate between adjacent convection tube 41 forms, the screwed pipe that convection bank 4 is connected with lower drum 3 with upper drum 2 respectively by about many two ends is formed, boiler furnace 7 is also provided with thread pipe air preheater and threaded flue economizer combination unit 9 and cyclone dust collectors 10, thread pipe air preheater is connected with the exhanst gas outlet of boiler furnace 7 with the smoke inlet of threaded flue economizer combination unit 9, cool air inlet is connected with the outer air of boiler furnace 7, hot air outlet is connected with boiler furnace 7 air compartment below fire grate 6 by air blast, water inlet is connected with the water return pipeline that supplies of boiler furnace 7 respectively by pipeline with delivery port, the smoke inlet of cyclone dust collectors 10 is connected with the exhanst gas outlet of thread pipe air preheater with threaded flue economizer combination unit 9, the exhanst gas outlet of cyclone dust collectors 10 is connected with the outer dust arrester installation of boiler furnace 7 by pipeline.
Fire grate 6 is reciprocal grate or traveling-grate stoker.
Thread pipe air preheater and threaded flue economizer combination unit 9 are applied for and " air suction type thread pipe air preheater and the threaded flue economizer combination unit " of obtaining the authorization for inventor.Thread pipe air preheater and threaded flue economizer combination unit 9 include housing, economizer and air preheater, economizer and air preheater are arranged on smoke inlet side and exhanst gas outlet side in housing exhaust gases passes respectively, economizer is by being provided with the airtight water tank housing of water inlet and delivery port and being positioned at tank shell to run through tank shell many screwed pipes along flow of flue gas direction and forming, and air preheater is by along to be located at perpendicular to flow of flue gas direction between housing offside sidewall and the many screwed pipes running through housing sidewall are formed.
Fuel burns the flue gas that produces through the membrane wall convection bank partition wall 8 of burner hearth 71 by convection bank 4 position on fire grate 6, eventually passes thread pipe air preheater and threaded flue economizer combination unit 9 and discharges with cyclone dust collectors 10 and be connected with the dust arrester installation outside body of heater.The membrane wall furnace wall of burner hearth 71 and secondary furnace 72 improves the sealing of furnace wall, makes body of heater air-tightness better, prevents cold air from entering in stove by furnace wall, reduce Air Leakage Into Boilers coefficient.Membrane wall convection bank partition wall enhances the air-tightness of convection bank partition wall, overcomes the flue gas short circuit of convection heating surface, to the sealing water conservancy diversion better effects if of flue gas.Membrane wall furnace wall and membrane wall convection bank partition wall 8 decrease the application of boiler refractory product, make the weight of boiler, volume had relative minimizing, save equipment investment.The convection bank heat exchange efficiency making screwed pipe increases, and plays the effect of making up, ensure that the heat exchange efficiency of boiler, reduce steel consumption the shortcoming that following current washes away the mode coefficient of heat transfer low.Following current is washed away and can be reduced flue gas resistance, effectively prevents collecting ash, reduces boiler operatiopn cost and accident rate, improves the stability of boiler operatiopn.Flue gas in boiler is through rising, declining heat exchange and the sedimentation of repeatedly turning back, and temperature and the dust content of flue gas reduce gradually, more meet environmental requirement, and the combustion air passing into air compartment becomes hot blast through air preheater, fuel are played to the effect promoting burning.Be installed at the cyclone dust collector 10 of boiler tail heat transfer zone, Appropriate application furnace inner space, effectively reduces the original dust exhausting concentration of boiler, reduces and decrease input and the occupation of land of later stage cleaner, saves boiler room investment.

Claims (4)

1. the longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank, it includes monowall tube (1), upper drum (2), lower drum (3), longitudinal convection bank (4), longitudinal heat exchange type water-tube boiler body of heater (7) of convection bank of coal bunker (5) and fire grate (6), the burner hearth (71) of boiler furnace (7) and the furnace wall of secondary furnace (73) are the closed furnace wall be made up of pattern water screen tube (1) respectively, it is characterized in that: to be longitudinally located at each convection bank brick baffle (8) of convection bank (4) position between upper drum (2) and lower drum (3) be by many convection tubes (41) respectively and be welded on the membrane wall training wall that the steel plate between adjacent convection tube (41) forms, the screwed pipe that convection bank (4) is connected with lower drum (3) with upper drum (2) respectively by about many two ends is formed, boiler furnace (7) is also provided with thread pipe air preheater and threaded flue economizer combination unit (9) and cyclone dust collectors (10), thread pipe air preheater is connected with the exhanst gas outlet of boiler furnace (7) with the smoke inlet of threaded flue economizer combination unit (9), cool air inlet is connected with boiler furnace (7) outer air, hot air outlet is connected by boiler furnace (7) air compartment of air blast with fire grate (6) below, water inlet is connected with the water return pipeline that supplies of boiler furnace (7) respectively by pipeline with delivery port, the smoke inlet of cyclone dust collectors (10) is connected with the exhanst gas outlet of thread pipe air preheater with threaded flue economizer combination unit (9), the exhanst gas outlet of cyclone dust collectors (10) is connected with boiler furnace (7) outer dust arrester installation by pipeline.
2. the longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank as claimed in claim 1, is characterized in that described fire grate (6) is reciprocal grate.
3. the longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank as claimed in claim 1, is characterized in that described fire grate (6) is traveling-grate stoker.
4. the longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank as claimed in claim 1, it is characterized in that described thread pipe air preheater and threaded flue economizer combination unit (9) include housing, economizer and air preheater, economizer and air preheater are arranged on smoke inlet side and exhanst gas outlet side in housing exhaust gases passes respectively, economizer is by being provided with the airtight water tank housing of water inlet and delivery port and being positioned at tank shell to run through tank shell many screwed pipes along flow of flue gas direction and forming, air preheater is by along to be located between housing offside sidewall perpendicular to flow of flue gas direction and the many screwed pipes running through housing sidewall are formed.
CN201520268192.4U 2015-04-29 2015-04-29 The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank Withdrawn - After Issue CN204648188U (en)

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CN201520268192.4U CN204648188U (en) 2015-04-29 2015-04-29 The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520268192.4U CN204648188U (en) 2015-04-29 2015-04-29 The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank

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CN204648188U true CN204648188U (en) 2015-09-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806994A (en) * 2015-04-29 2015-07-29 鲍守明 Film type smoke isolation wall threaded pipe convection pipe bundle longitudinal heat exchange water pipe boiler
WO2022032860A1 (en) * 2020-08-14 2022-02-17 中国华能集团清洁能源技术研究院有限公司 Near-zero emission-type flue gas multi-pollutant integrated removal system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806994A (en) * 2015-04-29 2015-07-29 鲍守明 Film type smoke isolation wall threaded pipe convection pipe bundle longitudinal heat exchange water pipe boiler
CN104806994B (en) * 2015-04-29 2016-07-27 鲍守明 Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler
WO2022032860A1 (en) * 2020-08-14 2022-02-17 中国华能集团清洁能源技术研究院有限公司 Near-zero emission-type flue gas multi-pollutant integrated removal system and method

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Granted publication date: 20150916

Effective date of abandoning: 20160727

C25 Abandonment of patent right or utility model to avoid double patenting