CN209445590U - A kind of three combustion chamber all steel energy-saving hot blast furnace of biomass - Google Patents

Abstract

The utility model is a kind of three combustion chamber all steel energy-saving hot blast furnace of biomass.Its housing construction is by main feeding hopper (1), secondary feeding hopper (7), face arch (14), return burning arch (12), fire grate (10), cigarette bridge heat exchanger (16), heat exchanger (17), furnace body (19), post-blast machine (20), the composition such as slag remover (22), biomass fuel is by main feeding hopper, secondary two hopper of feeding hopper is fed simultaneously, through main chamber, three combustion chamber continuous burning of subsidiary combustion chamber and hybrid combustor, compared with the combustion system of single large-scale combustion room, that is incendivity briquetting and particle, incendivity rice husk and sawdust etc. again, burning is thorough, furnace temperature is stablized, recycle drying machine waste gas residual heat, heat exchange efficiency is up to 78% or so, energy-saving effect is significant, it is limited to solve single large-scale combustion room firing biomass fuel, burning is not thorough, furnace temperature is unstable, waste of fuel is more, burn-off rate is poor , the problems such as energy consumption is high, be the ideal mating heat source such as grain, seed, forage drier.

Description

A kind of three combustion chamber all steel energy-saving hot blast furnace of biomass

Technical field

The utility model relates to send for the drying machines such as agricultural machinery grain, seed and feed and greenhouse heating, mine The heat power supply device of the offers such as wind.

Background technique

The matching used heat power supply device of the drying machines such as grain, seed and feed, mostly coal-fired hot-blast stove currently on the market, it is special The coal-fired hot-blast stove that its calorific value for not being the mixed masonry formula of conventional tile is 1800000-12000000Kcal/h is most, but to environment It is seriously polluted, a large amount of sulfur dioxide and flue dust etc. can be generated, causes fuel consumption big, energy consumption is high for drying machine, does not meet state Family's environmental requirement.

Summary of the invention

The purpose of the utility model is to overcome disadvantages mentioned above, provide a kind of three combustion chamber all steel energy-saving hot-blast of biomass The biomass fuels such as furnace, incendivity stalk briquette and particle, sawdust briquetting and particle, rice husk, peanut shell, sawdust, corncob, should Furnace structure by main feeding hopper, secondary feeding hopper, face arch, return and burn arch, furnace body, fire grate, slag remover, cigarette bridge heat exchanger, heat exchanger, secondary The composition such as air blower.Biomass fuel is fed simultaneously by main feeding hopper, secondary two hopper of feeding hopper, and face arch is respectively formed with burning arch is returned Main chamber and subsidiary combustion chamber, post-blast machine air feed area form hybrid combustor, and fuel is through main chamber, subsidiary combustion chamber and mixes Three combustion chamber continuous burning of combination burning room, particle and briquette-fuel etc. carry out the suspensions such as layer combustion or rice husk combustion in main chamber first It burns, enters back into subsidiary combustion chamber and carry out char combustion, under the action of post-blast machine, pass through a large amount of high temperature cigarettes of smoke hole exclusion Gas merges in hybrid combustor progress gasification, and combustion with the high-temperature flue gas for burning arch return is returned, after flue gas introduces heat exchanger by smoke suction machine It is discharged into atmosphere through chimney, the clinker that fuel combustion generates is excluded by slag remover.This three combustion chambers burns mode breaches routine Single large-scale combustion room combustion system and method, the fire grate fire in a stove before fuel is added is prosperous, and flame temperature is high, and wetter material also can be when faster Interior burning, fuel burn-off rate is high, and energy-saving effect is obvious, compared with the combustion system of single large-scale combustion room, biomass material combustion It burns and stablizes, spent material is extensive, i.e. incendivity briquetting and particle, and incendivity rice husk and sawdust etc., solves single large-scale combustion Room firing biomass fuel is limited, the fuel furnace temperature such as halfway phenomenon, especially combusting rice hull and sawdust of burning is unstable, combustion A series of problems, such as material waste is more, burn-off rate is poor, energy consumption is high.

The technical scheme adopted by the utility model to solve the technical problem is as follows: in fig. 1 and 2, biomass fuel by Conveyer feeds hot-blast stove main feeding hopper (1), and the aperture of adjustment sub-material door (2) guarantees constantly to fall into abundance in secondary feeding hopper (7) Fuel, discharge rolling (3) rotates under motor (21) driving, and biomass fuel falls into main chamber (8) interior fire grate (10) above, beats It prescribing vent (9) and lights fuel, after fuel burns in main chamber (8), main feeding hopper (1) and secondary feeding hopper (7) are fed simultaneously, At this moment starting smoke suction machine, start fire grate (10) slowly movement, fuel carries out layer combustion or suspension combustion in main chamber (8) first, It enters back into subsidiary combustion chamber (13) and carries out char combustion, under the action of post-blast machine (20), excluded by smoke hole (4) big Amount high-temperature flue gas merges in hybrid combustor (11) with the high-temperature flue gas for returning burning arch (12) return and carries out gasification, and combustion, until after burner hearth Portion enters cigarette bridge heat exchanger (16) through flue outlet (15), and flue gas introduces heat exchanger (17) by smoke suction machine and arranges by chimney after heat exchange Enter atmosphere, when high-temperature flue gas passes through heat exchanger (17), all heat exchanger tubes is heated, after natural air passes through heat exchanger (17) At hot wind, which gives drying machine low temperature drying section after the sucking of low temperature air-heater and uses the quantitative change of extraction duct surface heat, low The waste gas residual heat of the waste gas residual heat of warm dryer section drying cereal discharge and cooling section is respectively under the action of blower, through waste gas recovery Pipeline, which is blown into reheat in furnace body (19) double-layer plate, enters wind mixed chamber (18) for high-temperature hot-air, wherein more than the exhaust gas of cooling section Hot a part is blown into hot-blast stove bottom to fuel combustion supporting, and another part is after cooling air pipe enters cigarette bridge heat exchanger (16) heating It is mixed with the gas after exhaust gas heating in furnace in mixing chamber (18), which supplies drying machine after high-temperature warm air machine sucks Upper dryer section dried grain, a large amount of vapor that heat grain generates are excluded outside machine.The dust that fuel combustion generates is first in furnace Thorax expansion chamber (14) sedimentation, a small amount of dust are settled in heat exchanger (17) bottom, and the calomel mercurous chloride dirt not settled is by the rotation after smoke suction machine Wind deduster or bag filter sedimentation are removed, and the clinker that fuel combustion generates is excluded by slag remover (22).It thereby realizes Biomass fuel is in (11) three combustion chamber continuous burning of main chamber (8), subsidiary combustion chamber (13) and hybrid combustor, fuel combustion Thoroughly, in addition drying machine waste gas residual heat recycles, hot air furnace heat exchange efficiency is up to 78% or so.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is energy-saving hot blast furnace main view

Fig. 2 is Fig. 1 left view

Part number explanation in Fig. 1, Fig. 2；

1. main feeding hopper, 2. sub-material doors, the rolling of 3. discharges, 4. smoke holes, 5. secondary air channels, 6. face arch, 7. secondary feeding hoppers, 8. Main chamber, 9. lighting doors, 10. fire grates, 11. hybrid combustors, 12. return burning arch, 13. subsidiary combustion chamber, 14. expansion chambers, 15. cigarettes Gas outlet, 16. cigarette bridge heat exchangers, 17. heat exchangers, 18. wind mixed chamber, 19. furnace bodies, 20. post-blast machines, 21. motors, 22. remove Slag machine.

Specific embodiment

The utility model optimum implementation is described with reference to the accompanying drawing.Biomass fuel fires in fig. 1 and 2 Burn specific implementation are as follows: biomass fuel feeds hot-blast stove main feeding hopper (1) by conveyer, and the aperture of adjustment sub-material door (2) guarantees Sufficient fuel is fallen into secondary feeding hopper (7), discharge rolling (3) rotates under motor (21) driving, and biomass fuel falls into main burning Room (8) interior fire grate (10) above, after opening lighting door (9) lights the fuel in main chamber (8), feed by main feeding hopper (1) and pair Hopper (7) is fed simultaneously, at this moment starts smoke suction machine, starts fire grate (10) slowly movement, and fuel is carried out in main chamber (8) first Layer combustion or suspension combustion enter back into subsidiary combustion chamber (13) progress char combustion and pass through cigarette under the action of post-blast machine (20) A large amount of high-temperature flue gas that stomata (4) excludes merge in hybrid combustor (11) with the high-temperature flue gas for returning burning arch (12) return and carry out gas Change burning, until burner hearth rear portion enters cigarette bridge heat exchanger (16) through flue outlet (15), flue gas is introduced by smoke suction machine and exchanged heat after heat exchange Device (17) is discharged into atmosphere by chimney, and the dust that fuel combustion generates first is settled in burner hearth expansion chamber (14), and a small amount of dust exists Heat exchanger (17) bottom sedimentation, the calomel mercurous chloride dirt not settled by after smoke suction machine cyclone dust collectors or bag filter sedimentation remove, The clinker that fuel combustion generates is excluded by slag remover (22).Interplanar spacing is 300- on face arch (6) baseplane to fire grate 600mm, it is 48-150mm smoke hole (4) that face arch (6), which is equipped with 2-8 row diameter, and pitch of holes 100-300mm, line space is 300-600mm, for the number of smoke hole (4) quantity depending on hot-blast stove size, post-blast machine (20) is mounted on mixed firinor fuel burning At room (11) on furnace body (19) outer wall, the secondary air channel (5) of connection is 2-8 root, is mounted in face arch (6) at smoke hole (4).

Claims (2)

1. a kind of three combustion chamber all steel energy-saving hot blast furnace of biomass, it is characterised in that: biomass fuel is by main feeding hopper, secondary feeding It struggles against and two hoppers while being fed, face arch and return burning arch and be respectively formed main chamber and subsidiary combustion chamber, post-blast machine air feed area is formed Hybrid combustor, fuel is through three combustion chamber continuous burning of main chamber, subsidiary combustion chamber and hybrid combustor.

2. hot-blast stove according to claim 1, it is characterized in that: biomass fuel feeds hot-blast stove main feeding hopper by conveyer (1), the aperture for adjusting sub-material door (2) guarantees to fall into sufficient fuel in secondary feeding hopper (7), after fuel burns in main chamber (8), Main feeding hopper (1) and secondary feeding hopper (7) are fed simultaneously, start smoke suction machine, start fire grate (10), fuel is first in main chamber (8) Layer combustion or suspension combustion are carried out, subsidiary combustion chamber (13) is entered back into and carries out char combustion, under the action of post-blast machine (20), is led to Cross smoke hole (4) exclusion a large amount of high-temperature flue gas with return burn arch (12) return high-temperature flue gas merge in hybrid combustor (11) into Row gasification, and combustion, flue gas introduce heat exchanger (17) by smoke suction machine and are discharged into atmosphere by chimney, and the dust that fuel combustion generates first exists Burner hearth expansion chamber (14) sedimentation, a small amount of dust is settled in heat exchanger (17) bottom, after the calomel mercurous chloride dirt not settled is by smoke suction machine Cyclone dust collectors or bag filter sedimentation are removed, and the clinker that fuel combustion generates is excluded by slag remover (22), and face arch (6) bottom is flat Interplanar spacing is 300-600mm on face to fire grate, and it is 48-150mm smoke hole (4), hole that face arch (6), which is equipped with 2-8 row diameter, Spacing is 100-300mm, line space 300-600mm, and the number of smoke hole (4) quantity is secondary depending on hot-blast stove size Air blower (20) is mounted at hybrid combustor (11) on furnace body (19) outer wall, and the secondary air channel (5) of connection is 2-8 root, installation In face arch (6) at smoke hole (4).