CN104406157A - Reverse combustion boiler capable of efficiently utilizing residual heat of flue gas - Google Patents

Reverse combustion boiler capable of efficiently utilizing residual heat of flue gas Download PDF

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Publication number
CN104406157A
CN104406157A CN201410662976.5A CN201410662976A CN104406157A CN 104406157 A CN104406157 A CN 104406157A CN 201410662976 A CN201410662976 A CN 201410662976A CN 104406157 A CN104406157 A CN 104406157A
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China
Prior art keywords
flue gas
box
smoke
gas discharging
casing
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Pending
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CN201410662976.5A
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Chinese (zh)
Inventor
林平
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林平
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Priority to CN201410662976.5A priority Critical patent/CN104406157A/en
Publication of CN104406157A publication Critical patent/CN104406157A/en
Pending legal-status Critical Current

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Abstract

The invention provides a reverse combustion boiler capable of efficiently utilizing residual heat of flue gas, relating to a hot water boiler. The reverse combustion boiler comprises a furnace body and a flue gas discharging tank, wherein the flue gas discharging tank comprises a water bag and a flue gas discharging channel arranged in the water bag; the flue gas discharging channel is composed of a plurality of parallel flue gas discharging box bodies. and a plurality of communication water pipes transversely penetrate through the box bodies; a flue gas discharging opening of a hearth is connected with a flue gas passing chamber, and the flue gas passing chamber is connected with an ascending flue gas discharging box body; the top end of the ascending flue gas discharging box body is connected with a first returning flue gas chamber; the first returning flue gas chamber is connected with a descending flue gas discharging box body, and the descending flue gas discharging box body is connected with a second returning flue gas chamber; the second returning flue gas chamber is connected with a second ascending flue gas discharging box body. The reverse combustion boiler provided by the invention has the beneficial effects that after reverse combustion in the furnace body, fire coal which is not completely combusted is positively combusted and is completely combusted, so that the reverse combustion boiler is energy-saving and efficient, and is dust-free and environment-friendly. The generated flue gas passes through the plurality of parallel and returning type flue gas discharging box bodies and then is discharged; the plurality of communication water pipes which transversely penetrate through the box bodies are arranged in the flue gas discharging box bodies, so that the inner parts of the box bodies are in a water-in-fire structure; the flue gas discharging box bodies are located in the water bags of the flue gas discharging box bodies and are in a fire-in-water structure. The heat exchange is sufficient and the flue gas discharging is smooth; the residual heat of the flue gas can be efficiently utilized.

Description

A kind of fume afterheat efficiency utilization back firing boiler
Technical field:
The present invention relates to hot-water boiler, relate generally to anti-burning water-heating boiler, particularly fume afterheat efficiency utilization back firing boiler.
Background technology:
Known back firing boiler its be boiler with double fire grate, the fire grate that on it, interval is large is the anti-fire grate that burns, and the close fire grate in its lower interval, for just to burn fire grate, instead burns for smouldering burner hearth on fire grate, is compound burner hearth under anti-burning fire grate.New coal is added in burner hearth of smouldering and instead burns on fire grate, under air-introduced machine effect, the fire burning of coal place negative pressure state on anti-burning fire grate, flare burns under being pumped to fire grate, unburnt live charcoal falls between the anti-burning fire grate from white-out, fall on the just burning fire grate of its lower solid matter, under air-introduced machine effect, continue normalizing burning again.To burn fire grate and just burning between fire grate be positive and negative burning compound burner hearth anti-, existing top fall that fire is anti-to be burnt, have again the normalizing of bottom just burning, temperature is high, sufficient combustion, the two flame enters smoking box smokejack by smoke passing port jointly.Analyze its new coal combustion process, new coal is added to by fire door the coal seam top layer that upper of furnace body smoulders in burner hearth, burner hearth side of smouldering is provided with and littlely instead burns into air port, half anaerobic condition is located in air-introduced machine effect lower hearth, the flames of anger is smouldered, part carbon monoxide will be had, the imflammable gas such as methane are separated out from coal seam, and the coal seam of temperature rising is layer by layer passed downwardly through in conjunction with ash content of coal, together burn to the anti-red carbon layer burning fire grate and burning, burning is participated in because there being part imflammable gas, therefore its ignition temperature is high, sufficient combustion, and the ash content of coal easily forming flue dust is thoroughly burnt, so back firing boiler not easily produces flue dust, ignition temperature is high, energy-conserving and environment-protective.
The defect of existing back firing boiler is, its heat recovery of the high-temperature flue gas that back firing boiler produces is not rationally with abundant.
Summary of the invention:
The object of the present invention, is to provide a kind of fume afterheat efficiency utilization back firing boiler, by fume afterheat efficiency utilization, can greatly improves the thermal efficiency, high-efficient energy-saving environment friendly.
Technical scheme of the present invention is, a kind of fume afterheat efficiency utilization back firing boiler, comprise body of heater 1 and smoking box 1 ', smoking box is connected mutually with on rear side of body of heater.Described body of heater 1 comprises outside body of heater water bag 2, furnace roof water bag 3, water bag wraps up in heat-insulation layer, also comprise water pipe counter burn fire grate 5, anti-burn its upper new coal of fire grate smoulder burner hearth 7, its side be provided with instead burn into air port 8, anti-burning just to be burnt exhaust opening 18 on rear side of fire grate 6, compound burner hearth and is connected smoking box, just burns and just burning into wind on front side of its lower cinder chamber 13 of fire grate 6, cinder chamber and stitch 14 bottom its lower compound burner hearth 11 of fire grate, compound burner hearth.Described smoking box 1 ' comprises smoking box water bag 4 and Qi Nei smokejack.Described smokejack is made up of multiple smoke evacuation casings 16 side by side, and smoke evacuation casing is flat-shaped casing, and branched UNICOM water pipe 17 crosses casing.Exhaust opening 18 on rear side of compound burner hearth 11 connected smoke-box 20, cross up smoke evacuation casing 161 lower inlet of smoke-box connection suitable for reading first, first up smoke evacuation casing top connects first and to turn back smoke-box 21, first smoke-box of turning back connects the first descending smoke evacuation casing 162 upper inlet, first descending smoke evacuation casing 162 bottom connects second and to turn back smoke-box 22, and the second smoke-box 22 of turning back connects the second up smoke evacuation casing 163 lower inlet.Last up smoke evacuation casing top connects smoke evacuation room 23, and smoke evacuation room connects chimney 24.
The beneficial effect that the present invention produces:
Back firing boiler fire coal of the present invention first burns through anti-, and the live charcoal of not thorough after-flame is fallen just to burn on fire grate and continued just burning again, and sufficient combustion is thorough, energy-efficient, dustless environment protecting.Produce high-temperature flue gas and discharge after multiple Zigzag type smoke evacuation casing side by side.Branched UNICOM water pipe crosses smoke evacuation casing, and in " fiery Bao Shui " in smoke evacuation casing, smoke evacuation casing is in smoking box water bag in " water bag fire ".Heat exchange is abundant, discharges fume smooth and easy, fume afterheat efficiency utilization.
Accompanying drawing illustrates:
Accompanying drawing 1 the present invention constructs front view
Accompanying drawing 2 left view of the present invention
The A-A sectional view of accompanying drawing 3 accompanying drawing 1 of the present invention
Accompanying drawing 4 top view of the present invention
Detailed description of the invention:
Detailed description of the invention is shown in shown in accompanying drawing 1,2,3,4.The present invention includes body of heater 1 and smoking box 1 ', smoking box is connected mutually with on rear side of body of heater.Described body of heater 1 comprises body of heater Shui Bao 2 UNICOM furnace roof water bag 3, wraps up in heat-insulation layer outside water bag.Middle part is provided with that the water pipe of sparse arrangement is counter burns fire grate 5 in body of heater, and water pipe is counter to be burnt fire grate it above to be smouldered burner hearth 7 for new coal, and its antetheca is provided with and adds coal stove door 9 and observe fire door 10, and its side is provided with 1 to 2 anti-air port 8 that burns into, and is provided with and keeps off coal grid 8 ' in air inlet 8.Its time of anti-burning fire grate 5 is compound burner hearth 11, is the just burning fire grate 6 of steel rider solid matter, is provided with exhaust opening 18 on rear side of compound burner hearth bottom compound burner hearth.Water pipe is counter to be burnt fire grate and produces that fire is anti-burns for 5 times, and steel rider solid matter is just burning and fire grate 6 produces normalizing just burning, thus compound burner hearth 11 in the positive and negative burning compound combustion of generation.Just burning fire grate is cinder chamber 13 6 times, is provided with and is just burning into wind seam 14 on front side of it.Described smoking box 1 ' comprises smoking box water bag 4 and Qi Nei smokejack, and smoking box water bag and body of heater water bag are connected.Smokejack is made up of multiple smoke evacuation casings 16 side by side, and smoke evacuation casing is flat-shaped casing, and branched UNICOM water pipe 17 crosses casing, sees shown in accompanying drawing 1 and 3.On rear side of compound burner hearth 11, exhaust opening 18 connected smoke-box 20, and cross in smoke-box 20 secondary wind inleting tube 19 being provided with the outer UNICOM with body of heater, the distribution of its tube wall is porose.Cross up smoke evacuation casing 161 lower inlet of smoke-box connection suitable for reading first, first up smoke evacuation casing top connects first and to turn back smoke-box 21, first smoke-box of turning back connects the first descending smoke evacuation casing 162 upper inlet, first descending smoke evacuation casing 162 bottom connects second and to turn back smoke-box 22, and the second smoke-box 22 of turning back connects the second up smoke evacuation casing 163 lower inlet.Present embodiment smoke evacuation casing is provided with 3, and namely last connect smoke evacuation room 23 to chimney 24 in second up its top of smoke evacuation casing.First turns back, and smoke-box 21 is main looks its top ramped shaped, and second turns back, and smoke-box 22 is main looks its end ramped shaped.Corresponding smoke-box 20, first smoke-box 21 and second smoke-box 22 of turning back of turning back of crossing is provided with shoot door 27 outside body of heater.

Claims (4)

1. a fume afterheat efficiency utilization back firing boiler, comprise body of heater (1) and smoking box (1 '), smoking box is connected mutually with on rear side of body of heater;
Described body of heater (1) comprises body of heater water bag (2), furnace roof water bag (3), heat-insulation layer is wrapped up in outside water bag, water pipe is counter burns fire grate (5), anti-burning fire grate it is smouldered burner hearth (7), its side is provided with and instead burns into air port (8), its lower compound burner hearth (11) of anti-burning fire grate, fire grate (6) is just being burnt bottom compound burner hearth, exhaust opening (18) on rear side of compound burner hearth, just burning its lower cinder chamber (13) of fire grate (6), wind seam (14) is just being burnt on front side of cinder chamber,
Described smoking box (1 ') comprises smoking box water bag (4) and smokejack in it;
It is characterized in that, described smokejack is made up of multiple smoke evacuation casings (16) side by side, and smoke evacuation casing is flat-shaped casing, and casing crosses in branched UNICOM water pipe (17); Compound burner hearth (11) rear side exhaust opening (18) connected smoke-box (20), cross smoke-box upper outlet and connect the first up smoke evacuation casing (161) lower inlet, first up smoke evacuation casing top connects first and to turn back smoke-box (21), first smoke-box of turning back connects the first descending smoke evacuation casing (162) upper inlet, first descending smoke evacuation casing (162) bottom connects second and to turn back smoke-box (22), and the second smoke-box (22) of turning back connects the second up smoke evacuation casing (163) lower inlet; Last up smoke evacuation casing top connects smoke evacuation room (23) to chimney (24).
2. a kind of fume afterheat efficiency utilization back firing boiler according to claim 1, it is characterized in that, described smoke evacuation casing (16) is arranged side by side 3; First turn back smoke-box (21) its top is main looks ramped shaped, ramped shaped was mainly looked in second smoke-box (22) its end of turning back.
3. a kind of fume afterheat efficiency utilization back firing boiler according to claim 1 or 2, is characterized in that, cross in smoke-box the secondary wind inleting tube (19) being provided with the outer UNICOM with body of heater, its tube wall is distributed with fresh air inlet.
4. a kind of fume afterheat efficiency utilization back firing boiler according to claim 3, is characterized in that, one of burner hearth of smouldering (7) wing furnace wall is provided with 1-2 and instead burns into air port (8), has gear coal grid (8 ') in mouth.
CN201410662976.5A 2014-11-04 2014-11-04 Reverse combustion boiler capable of efficiently utilizing residual heat of flue gas Pending CN104406157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410662976.5A CN104406157A (en) 2014-11-04 2014-11-04 Reverse combustion boiler capable of efficiently utilizing residual heat of flue gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410662976.5A CN104406157A (en) 2014-11-04 2014-11-04 Reverse combustion boiler capable of efficiently utilizing residual heat of flue gas

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CN104406157A true CN104406157A (en) 2015-03-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016248A (en) * 2016-07-11 2016-10-12 塔城市昊祥三友科技开发有限责任公司 Coal-fired boiler
CN106838957A (en) * 2017-01-13 2017-06-13 安徽未名鼎和环保有限公司 A kind of combustion furnace exhaust gas processing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2788021Y (en) * 2004-07-16 2006-06-14 凤城市宏宇锅炉制造厂 Coal-gasified drum type environment-friendly normal pressure hot-water boiler
CN201215384Y (en) * 2008-04-15 2009-04-01 李新明 Coal boiler without smoke
CN103940079A (en) * 2014-03-25 2014-07-23 青岛殖富园机械有限公司 Novel efficient smokeless counter-burning boiler
CN204201877U (en) * 2014-11-04 2015-03-11 林平 Novel flue gas waste heat efficiency utilization back firing boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2788021Y (en) * 2004-07-16 2006-06-14 凤城市宏宇锅炉制造厂 Coal-gasified drum type environment-friendly normal pressure hot-water boiler
CN201215384Y (en) * 2008-04-15 2009-04-01 李新明 Coal boiler without smoke
CN103940079A (en) * 2014-03-25 2014-07-23 青岛殖富园机械有限公司 Novel efficient smokeless counter-burning boiler
CN204201877U (en) * 2014-11-04 2015-03-11 林平 Novel flue gas waste heat efficiency utilization back firing boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016248A (en) * 2016-07-11 2016-10-12 塔城市昊祥三友科技开发有限责任公司 Coal-fired boiler
CN106016248B (en) * 2016-07-11 2018-11-27 塔城市昊祥三友科技开发有限责任公司 Coal-burning boiler
CN106838957A (en) * 2017-01-13 2017-06-13 安徽未名鼎和环保有限公司 A kind of combustion furnace exhaust gas processing device

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Application publication date: 20150311