CN104806994B - Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler - Google Patents
Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler Download PDFInfo
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- CN104806994B CN104806994B CN201510210754.4A CN201510210754A CN104806994B CN 104806994 B CN104806994 B CN 104806994B CN 201510210754 A CN201510210754 A CN 201510210754A CN 104806994 B CN104806994 B CN 104806994B
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The present invention relates to a kind of membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler, it includes boiler furnace (7), each convection bank brick baffle (8) is membrane wall training wall respectively, convection bank (4) is made up of many corrugated tubings, boiler furnace (7) is additionally provided with thread pipe air preheater and threaded flue economizer combination unit (9) and cyclone dust extractor (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 extractor (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 saving fuel and the energy.Membrane wall brick baffle is adopted to replace the brick baffle that refractory material is made, it is possible to improve sealing and the energy-saving effect of boiler.The convection bank that corrugated tubing is made adds boiler convection pipe longitudinal direction heat transfer effect, makes boiler more save fuel, it is achieved energy-saving and cost-reducing.
Description
Technical field
The present invention relates to heating equipment, be specifically related to a kind of convection bank longitudinal direction heat exchange type water-tube boiler.
Background technology
The sidewall of common convection bank longitudinal direction heat exchange type water-tube boiler is by bare-tube wall pipe and is positioned at the refractory wall outside water screen tube and constitutes, the weight and volume of boiler is relatively large, the consumption of refractory material is also more, equipment investment is bigger, the sealing of the furnace wall that refractory material is made is good not, easily crack, air leakage coefficient causes that greatly the heat in burner hearth is meaningless and scatters and disappears, and has influence on the energy saving of boiler.Occurred in that membrane wall furnace wall efficiently solved this problem later, but make the brick baffle that flue gas is turned back up and down remain in this boiler to be formed by laying fireproof bricks, the gap of convection bank is smaller, workmen cannot be introduced into building by laying bricks or stones, by instrument, refractory brick can only be pushed away to the inside one by one, building by laying bricks or stones inconvenient, speed of application is also slow, not only waste of manpower but also it is difficult to ensure that quality.The poor sealing of the brick baffle of laying fireproof bricks, it is easy to cause flue gas short circuit, waste 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 convection bank axis vertical following current, make in convection bank not easily dust stratification, but the smooth surface due to convection bank, the coefficient of heat transfer between convection bank with flue gas is relative to be relatively low, the efficiency wanting to reach boiler is accomplished by increasing the quantity of convection tube, can increase steel quantity consumption.Owing to heat exchange efficiency is relatively low, the flue-gas temperature that boiler is discharged is also higher, causes that boiler does not save fuel, the waste energy.
Summary of the invention
It is an object of the invention to provide a kind of equipment investment few, good energy saving property, heat exchange efficiency is high, saves the membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler of fuel and the energy.
nullThe technical solution of the present invention is: it includes including monowall tube、Upper drum、Lower drum、Longitudinal convection bank、The convection bank longitudinal direction 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 being made up of monowall tube respectively，The each convection bank brick baffle being longitudinally located between upper drum and lower drum convection bank position is the membrane wall training wall being made up of many convection tubes and the steel plate that is welded between adjacent convection tube respectively，The corrugated tubing that convection bank is connected with upper drum and lower drum respectively by about many two ends is constituted，Boiler furnace is additionally provided with thread pipe air preheater and threaded flue economizer combination unit and cyclone dust extractor，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 aerator、Water inlet is connected with the water return pipeline that supplies of boiler furnace respectively through pipeline with outlet，The smoke inlet of cyclone dust extractor is connected with the exhanst gas outlet of thread pipe air preheater and threaded flue economizer combination unit，The exhanst gas outlet of cyclone dust extractor is connected by the outer dust arrester installation of pipeline and boiler furnace.
The solution have the advantages that: it is few that it has equipment investment, good energy saving property, heat exchange efficiency is high, the advantage saving fuel and the energy.Heat convection structure adopts membrane wall brick baffle to replace the brick baffle that refractory material is made, it is possible to makes each convection current cigarette journey better tightness of boiler, and solves the problem that refractory brick difficulty is built by laying bricks or stones, it is possible to improve sealing and the energy-saving effect of boiler.The convection bank that corrugated tubing is made adds boiler convection pipe longitudinal direction heat transfer effect, it is possible to make the heat exchange efficiency of boiler be greatly improved, and makes boiler more save fuel, and the flue-gas temperature of discharge also can decline, it is achieved energy-saving and cost-reducing.Flue gas washes away along convection bank following current can reduce the resistance that flue gas is subject to, and 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 extractor dedusting through thread pipe air preheater and threaded flue economizer combination unit, flue-gas temperature and dust content are all greatly reduced, and are easier to realize the environmental requirement of qualified discharge then through after other dust arrester installation dedusting.The overall weight of this boiler is greatly reduced, lower in cost, is suitable to be widely popularized and apply.
Accompanying drawing explanation
Fig. 1 is perspective structure figure of the present invention.
Detailed description of the invention
nullAs shown in Figure 1，It includes including monowall tube 1、Upper drum 2、Lower drum 3、Longitudinal convection bank 4、The convection bank longitudinal direction 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 72 are the closed furnace wall being made up of monowall tube 1 respectively，The each convection bank brick baffle 8 being longitudinally located between upper drum 2 and lower drum 3 convection bank 4 position is the membrane wall training wall being made up of many convection tubes and the steel plate that is welded between adjacent convection tube respectively，The corrugated tubing that convection bank 4 is connected with upper drum 2 and lower drum 3 respectively by about many two ends is constituted，Boiler furnace 7 is additionally provided with thread pipe air preheater and threaded flue economizer combination unit 9 and cyclone dust extractor 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 aerator、Water inlet is connected with the water return pipeline that supplies of boiler furnace 7 respectively through pipeline with outlet，The smoke inlet of cyclone dust extractor 10 is connected with the exhanst gas outlet of thread pipe air preheater and threaded flue economizer combination unit 9，The exhanst gas outlet of cyclone dust extractor 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 for inventor and obtain " air suction type thread pipe air preheater and the threaded flue economizer combination unit " of mandate.Thread pipe air preheater and threaded flue economizer combination unit 9 include housing, economizer and air preheater, economizer and air preheater are separately mounted in housing exhaust gases passes smoke inlet side and exhanst gas outlet side, economizer is by the airtight water tank housing being provided with water inlet and outlet and is positioned at tank shell and runs through many corrugated tubings of tank shell along flow of flue gas direction and constitute, and air preheater is by being located between housing offside sidewall and run through many corrugated tubings of housing sidewall and constitute along being perpendicular to flow of flue gas direction.
Fuel burns the flue gas that produces through membrane wall convection bank partition wall 8 by convection bank 4 position of burner hearth 71 on fire grate 6, eventually passes the dust arrester installation that thread pipe air preheater discharges outside with body of heater with cyclone dust extractor 10 with threaded flue economizer combination unit 9 and is connected.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, it is prevented that cold air is entered in stove by furnace wall, reduces 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, the sealing water conservancy diversion better effects if to 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 have relative minimizing, save equipment investment.The convection bank heat exchange efficiency making corrugated tubing increases, and shortcoming following current being washed away the mode coefficient of heat transfer low plays the effect of making up, it is ensured that the heat exchange efficiency of boiler, reduces steel consumption.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, decline heat exchange and the sedimentation of repeatedly turning back, and temperature and the dust content of flue gas are gradually lowered, and more meet environmental requirement, and the combustion air passing into air compartment becomes hot blast through air preheater, and fuel plays the effect promoting burning.It is installed at the cyclone dust collector 10 of boiler tail heat transfer zone, Appropriate application furnace inner space, effectively reduce the original dust exhausting concentration of boiler, reduce and decrease input and the occupation of land of later stage cleaner, save boiler room investment.
Claims (4)
- null1. membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler，It includes including monowall tube (1)、Upper drum (2)、Lower drum (3)、Longitudinal convection bank (4)、Convection bank longitudinal direction 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 (72) are the closed furnace wall being made up of monowall tube (1) respectively，It is characterized in that: each convection bank brick baffle (8) being longitudinally located between upper drum (2) and lower drum (3) convection bank (4) position is the membrane wall training wall being made up of many convection tubes and the steel plate that is welded between adjacent convection tube respectively，The corrugated tubing that convection bank (4) is connected with upper drum (2) and lower drum (3) respectively by about many two ends is constituted，Boiler furnace (7) is additionally provided with thread pipe air preheater and threaded flue economizer combination unit (9) and cyclone dust extractor (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 aerator with fire grate (6) lower section、Water inlet is connected with the water return pipeline that supplies of boiler furnace (7) respectively through pipeline with outlet，The smoke inlet of cyclone dust extractor (10) is connected with the exhanst gas outlet of thread pipe air preheater and threaded flue economizer combination unit (9)，The exhanst gas outlet of cyclone dust extractor (10) is connected with boiler furnace (7) outer dust arrester installation by pipeline.
- 2. membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler as claimed in claim 1, it is characterised in that described fire grate (6) is reciprocal grate.
- 3. membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler as claimed in claim 1, it is characterised in that described fire grate (6) is traveling-grate stoker.
- 4. membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler 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 separately mounted in housing exhaust gases passes smoke inlet side and exhanst gas outlet side, economizer is by the airtight water tank housing being provided with water inlet and outlet and is positioned at tank shell and runs through many corrugated tubings of tank shell along flow of flue gas direction and constitute, air preheater is by being located between housing offside sidewall and run through many corrugated tubings of housing sidewall and constitute along being perpendicular to flow of flue gas direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510210754.4A CN104806994B (en) | 2015-04-29 | 2015-04-29 | Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler |
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| CN201510210754.4A CN104806994B (en) | 2015-04-29 | 2015-04-29 | Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler |
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| CN104806994A CN104806994A (en) | 2015-07-29 |
| CN104806994B true CN104806994B (en) | 2016-07-27 |
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| CN105299894B (en) * | 2015-11-30 | 2018-12-04 | 天津宝成机械制造股份有限公司 | A kind of gas-fired water heating boiler air circulation energy conserving system |
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| CN204648188U (en) * | 2015-04-29 | 2015-09-16 | 鲍守明 | The longitudinal heat exchange type water-tube boiler of membrane wall brick baffle screwed pipe convection bank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7533632B2 (en) * | 2006-05-18 | 2009-05-19 | Babcock & Wilcox Canada, Ltd. | Natural circulation industrial boiler for steam assisted gravity drainage (SAGD) process |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010060324A1 (en) * | 2008-11-26 | 2010-06-03 | Wang Sen | Circulating fluidized bed boiler integrating material separating and heat transfer |
| CN202349981U (en) * | 2011-11-17 | 2012-07-25 | 山东华源锅炉有限公司 | Double-return vertical waste heat boiler |
| CN202350010U (en) * | 2011-11-17 | 2012-07-25 | 山东华源锅炉有限公司 | Boiler for combusting biomass gasification gas |
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