CN101738081A - Shaft kiln - Google Patents
Shaft kiln Download PDFInfo
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- CN101738081A CN101738081A CN201010102122A CN201010102122A CN101738081A CN 101738081 A CN101738081 A CN 101738081A CN 201010102122 A CN201010102122 A CN 201010102122A CN 201010102122 A CN201010102122 A CN 201010102122A CN 101738081 A CN101738081 A CN 101738081A
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Abstract
The invention discloses a shaft kiln, which comprises a fuel supply device, an ignition device, a discharge device, a kiln chamber, a refractory material, an insulating material, a fan and a pipeline. The side wall of the kiln chamber is provided with at least one air inlet which is at least connected with an air inlet passage. The fan is arranged on the air inlet passage. The kiln chamber is provided with a heating chamber and a cooling chamber, wherein the lower part of the heating chamber is communicated with the cooling chamber; the upper part of the heating chamber is provided with a feed inlet and an air outlet for the heating chamber; and the lower part of the cooling chamber is provided with a discharge outlet. The discharge outlet is provided with the discharge device; and at least one flame path is arranged on the side wall of the kiln chamber between the heating chamber and the cooling chamber, and is communicated with the air inlet. Due to the use of heat convection and vortexes for combustion, the shaft kiln is more energy-saving and environment-friendly. The vortexes are formed in the kiln chamber by using forced air, so that the material is uniformly heated. The movement of hot air around the material replaces a heating mode of rolling the material, and the material naturally moves to a preheating zone, a heating zone, and a cooling zone by using natural sedimentation. The shaft kiln can be applied to burning cement, lime, alumina and other blocked materials.
Description
Technical field
The present invention relates to the furnace equipment field, specifically is a kind of shaft furnace.
Background technology
Existing shaft furnace, be used to produce cement, lime, roasting, the multiple ore of calcining, lump material etc. more, ubiquity energy consumption height, discharge that not enough environmental protection, heat energy utilization rate are low, polyhybird coal burning in the kiln, fuel combustion are insufficient, dust and noxious gas emission is too many, problems such as non-uniform temperature in the stove.
Summary of the invention
The object of the present invention is to provide a kind of shaft furnace of brand new, can make fuel combustion more abundant, capacity usage ratio is higher, discharges environmental protection more, noxious gas emission significantly reduces, can make product better, more energy-saving and cost-reducing, reduce production costs, improve furnace efficiency greatly, can produce cement, lime, flint clay, aluminium oxide, ore roasting etc. with it, can in the firing chamber, not add coal in the production, can make product clean more.
Also can in shaft furnace, spray into chemical reaction catalyst, reducing agent, additive etc., make shaft furnace become a high-temperature chemical reaction kiln, available its roasting, calcine multiple ore, lump material etc., granular material can be made the ball lump material after, fire with this shaft furnace again.
Shaft furnace of the present invention can use pluralities of fuel, can use any one solid, liquid, gaseous fuel, also can use multiple fuel combination.Can use all gases, liquid fuels such as natural gas, coal gas, blast furnace gas, coke-stove gas, hydrogen, diesel oil, heavy oil, water-coal-slurry.Also can use solid fuels such as coal, biomass fuel, meager coal.
The present invention is achieved through the following technical solutions for achieving the above object:
Shaft furnace, comprise: fuel supply system, igniter, device for discharging, the firing chamber, refractory material, insulation material, blower fan and pipeline, firing chamber's sidewall is provided with an air inlet at least, air inlet connects an inlet channel at least, blower fan is set on the inlet channel, the firing chamber establishes heating clamber and cooling chamber, the heating clamber bottom is communicated with cooling chamber, charging aperture is established on heating clamber top, the heating clamber gas outlet is established on heating clamber top, and discharging opening is established in the cooling chamber bottom, and discharging opening is established device for discharging, a quirk is set on the firing chamber's sidewall between heating clamber and the cooling chamber at least, and air inlet is communicated with quirk.Firing chamber's inner chamber cross section is rounded, and inlet channel is provided with along firing chamber's inner chamber cross section tangential direction.Quirk is provided with along firing chamber's inner wall surrounding, and the quirk top is provided with bossy body.On firing chamber's sidewall of quirk below around concavo-convex body is set.Cooling chamber is established the cooling chamber air inlet, and the cooling chamber air inlet connects cooling blower.Along firing chamber's inner chamber cross section tangential direction many pressurization admission lines are set, the pressurization admission line connects booster fan.On firing chamber's sidewall of pressurization admission line top bossy body is set.Discharging opening is communicated with the material chamber, and material gas outlet, chamber is established in the material chamber, and material gas outlet, chamber connects booster fan.The sub-material device for discharging is established on the axis in the cooling chamber bottom, sub-material device for discharging bottom transverse cross section is rounded, taper shape is arranged on sub-material device for discharging top, movable sealing mediation discharge port is set on firing chamber's sidewall of sub-material device for discharging below, cooling chamber bottom centre establishes discharging opening, sub-material device for discharging below is provided with the cooling admission line, and the cooling admission line connects cooling blower.The heating clamber gas outlet connects air heating device gas approach, and air heating device exhanst gas outlet connects air-introduced machine, and air-introduced machine connects tail gas treatment device, and air heating device heat outlet connects blower fan.
The invention has the advantages that: the twisted-plumes of fuel burning, swirl combustion has prolonged burning time, makes fuel and air better mixing even, makes full combustion of fuel.High speed rotation by eddy current makes direct use bulky grain solid fuel become possibility, can make the bulky grain solid fuel form adherent burning, can reduce the solid fuel crushing cost greatly and use.
Utilize booster fan to make and form eddy current in the firing chamber, improved the move distance of thermal current, improved the holdup time of thermal current in the firing chamber, better cut off thermal current rectilinear motion upward, cut off the adherent effect of thermal current, avoid forming the hot blast tunnel, realize heat transmission better, make in the firing chamber temperature even, material is heated evenly.Also can utilize forced air in the firing chamber, to spray into chemical reaction catalyst or reducing agent, make the firing chamber become a chemical-reacting furnace.
Motion is mutual, the thermal current motion makes material also move with respect to thermal current, the motion that utilizes thermal current to center on material has replaced mode of heating that material is rolled, it is the same substantially with the effect of rotary kiln to add thermal effect, also avoided lump material in rotary kiln because the broken problem of rolling and causing, make the material required energy consumption of rolling to be far longer than and to make the required energy consumption of air motion, can significantly reduce energy consumption, make kiln more energy-conservation.
Utilize natural subsidence make in the firing chamber material movement to the preheating zone, the thermal treatment zone, cooling zone.The characteristics of utilizing hot-air to move upward make the heat that material is with that burns till be taken to the thermal treatment zone by air, realize the heat radiation of finished product and the recycling of waste heat, can be energy-conservation greatly.
Utilizing the geometry of kiln inwall to make material form nature in the natural subsidence process rolls, material better is heated, changed the ventilation condition of stock column, improved the permeability of stock column, be thermal current better heating material.
Utilize material to make material form after-ripening, guarantee that better material fully fires maturation in the delay of cooling chamber.Utilize air-breathing firing chamber's charging aperture and the discharging opening place of making of blower fan to form negative pressure, dust, waste gas can not leaked in the atmosphere, the dust when yet making charging, discharging can not leak in the surrounding space, environmental protection more.
Shaft furnace of the present invention can be with its roasting, calcine multiple lump material, also granular material can be made ball or lump material after, in the firing chamber, fire.Can be widely used in productions such as cement, lime, aluminium oxide, copper smelting by pyrometallurgy, ore roasting.
Can original old-fashioned shaft furnace be undergone technological transformation with this shaft furnace technology, can make old-fashioned shaft furnace reach environmental requirement, can significantly improve output simultaneously.
Description of drawings
Accompanying drawing 1 is the main TV structure schematic diagram of one of embodiment of the invention;
Accompanying drawing 2 is that the A-A of accompanying drawing 1 is to the sectional structure schematic diagram;
Accompanying drawing 4 is main TV structure schematic diagrames of two of the embodiment of the invention;
Accompanying drawing 5 is main TV structure schematic diagrames of three of the embodiment of the invention;
Accompanying drawing 6 is that the C-C of accompanying drawing 5 is to the sectional structure schematic diagram;
Accompanying drawing 7 is main TV structure schematic diagrames of four of the embodiment of the invention;
The specific embodiment
Agent structure of the present invention is: shaft furnace comprises fuel supply system, igniter, device for discharging, firing chamber 1, refractory material 4, insulation material 5, blower fan and pipeline 3, firing chamber's 1 sidewall is provided with an air inlet 6 at least, air inlet 6 connects an inlet channel 7 at least, blower fan 2 is set on the inlet channel 7, firing chamber 1 establishes heating clamber 8 and cooling chamber 9, heating clamber 8 bottoms are communicated with cooling chamber 9, charging aperture 10 is established on heating clamber 8 tops, heating clamber gas outlet 11 is established on heating clamber 8 tops, discharging opening 12 is established in cooling chamber 9 bottoms, discharging opening 12 is established device for discharging, on firing chamber's 1 sidewall between heating clamber 8 and the cooling chamber 9 quirk 13 is set at least, and air inlet 6 is communicated with quirk 13.
Fuel supply system can directly connect inlet channel 7 by cartridge, when using liquid or gaseous fuel, liquid or gaseous direct fuel after fuel supply system can directly will pressurize by cartridge are delivered into inlet channel 7, also fuel nozzle ports can be set directly at inlet channel 7 exits, can save fuel nozzle, can remove nozzles from, can avoid forming thermal-flame, can make more uniform temperature, can avoid material burning to occur giving birth to.When using solid fuel, fuel supply system can utilize air communication piping 3 that pulverulent solids fuel is conveyed into inlet channel 7, can utilize blower fan powdery solid fuel.
Igniter can be established electronic ignition device, and igniter connects the igniting cartridge, can the using gases fuel ignition.Can first using gases fuel ignition when this shaft furnace uses coal, re-use cheap fuel such as heavy oil and further improve temperature, when acquiring a certain degree, temperature resupplies coal dust, can reduce the igniting expense.Also can be on inlet channel the set-point vent, lighting door seals at ordinary times, open during igniting, in inlet channel, insert the igniting firewood, spray diesel oil on the igniting firewood, open blower fan after the igniting, blower fan is sprayed onto the success of can lighting a fire on the igniting firewood with coal dust, and the also available cotton yarn that is stained with diesel oil or other easy fuel material of igniting firewood replaces.For the guarantee point fire safety can be provided with temperature sensor or watch-dog monitor temperature on the igniter side, guarantee to light a fire successfully.Air intake left by blower fan during igniting, and air quantity will strengthen gradually, strengthens fuel quantity gradually, just can use various fuel when forming high temperature eddy current.
Also the movable sealing fire hole can be set, available existing burning torch igniting after the igniting is extracted burning torch out, and fire hole is got final product with the sealing bolt sealing.The igniting of this shaft furnace is extremely easy, can light a fire at any time, also can cease fire at any time; can use any fuel, can use biomass fuel, can burn away the refuse, industrial precipitation slag etc.; also can use various fuel mix; can use the fire coal of various atures of coal, also can use meager coal, gangue, fire coal can fully burn; can use the bulky grain coal dust; the fuel burn-off rate can reach more than 99.9%, produces black smoke anything but, and exhaust emission standard can be with using the coal gas effect to compare favourably.
Device for discharging can be provided with various device for discharging, can adopt present fire bars or present shaft furnace machinery device for discharging, guarantees that material can uniform settlement, improves mechanization degree as far as possible.
It is fixed that firing chamber 1 height can wait according to the internal diameter size of the category of the material of firing, granular size, firing chamber, can increase the firing chamber when when material particles is big and firing chamber internal diameter is big.Firing chamber's internal diameter is unsuitable excessive or too small, is controlled between the 1.5-4 rice properly, can reduce the cost and putting up a kiln the cycle of putting up a kiln, and reduces the material loading cost.The firing chamber can utilize the hillside fields to comply with the slope and build, and it is firm to help the firing chamber, reduces the cost of putting up a kiln, and also helps material loading.The chamber that puts up a kiln, level land need reinforce, and the firing chamber can seal with iron sheet, and outer periphery concrete or steel structure support are firm, and adiabator layer can be set up in the outside increases heat insulation effect, and material loading need be used lowering or hoisting gear.
Can select different refractory material 4 for use according to actual temp, inside, firing chamber is built into refractory brick, can specifically set refractory brick thickness according to firing chamber's height, fire clay, refractory mortar or refractory cement sealing will be used in the refractory brick slit, flame-proof thermal insulation material 5 is established in the refractory brick outside, can paste the high temperature resistant rock wool of one deck, outside available perlite of rock wool or ashes etc. tamp.When putting up a kiln, the hillside fields can cooperate the sandy soil compacting: the sandwich construction that can adopt one deck sandy soil one deck ashes, can form the hard sandwich construction of the soft one deck of one deck, can make more flexible of refractory insulating layer overall structure, can guarantee that the crack does not appear in the refractory insulating layer overall structure, can realize insulation better.The firing chamber can use the several years generally speaking continuously, can be with the unified replacing of internal refractory brick during firing chamber's overhaul.
Blower fan can be selected different specifications and models as the case may be for use, and pipeline can be used iron pipe, and insulation material can be wrapped up in the pipeline outside.
Firing chamber's 1 sidewall is provided with an air inlet 6 at least.Utilize air inlet 6 in the firing chamber, to send into air and fuel.In firing chamber's zones of different a plurality of air inlets 6 are set as required.
Blower fan 2 is set on the inlet channel 7, utilizes 2 pairs of air-flow pressurizations of blower fan, make air-flow rush in the firing chamber.
Gas outlet and charging aperture can be arranged to split, with the heating clamber top seal, in heating clamber central upper portion zone charging aperture is set, on the sidewall around the heating clamber top, set out gas port, the gas outlet connects air-introduced machine, enters atmosphere after the tail gas of air-introduced machine discharge is handled, and can make charging aperture 10 places form negative pressure, making when reinforced not can flying dust, makes shaft furnace environmental protection more.
Charging aperture and gas outlet also can be set to one, and heating clamber can utilize charging aperture to give vent to anger simultaneously, and shortcoming is that tail gas that shaft furnace produces does not add any processing and just directly enters atmosphere, is unfavorable for environmental protection.
Discharging opening 12 is established in cooling chamber 9 bottoms, and discharging opening 12 is established device for discharging, and cooling chamber can be increased in suitable increasing, and for reducing cost, cooling chamber bottom and heating clamber top can be built with clay brick.Discharging opening 12 can be provided with present fire bars or present shaft furnace machinery device for discharging.Discharging opening 12 also can be provided with moving grate, and moving grate can be arranged to the mechanical device of control automatically, also can be arranged to manually operated.
During the material of prevented from caking such as this shaft furnace lime calcining, discharging opening 12 also can be located at cooling chamber bottom centre, can be arranged to funnel-form, and certain altitude is provided with the sub-material device for discharging at interval above discharging opening 12.Can set out bin gate under the discharging opening, the folding size that adjusts bin gate can be regulated discharging flow.
Discharging opening 12 belows connect conveyer, can improve mechanization degree, can utilize conveyer such as conveyer belt incessantly mass transport to be gone out, and can determine load and discharging speed according to the mature condition that material in the firing chamber is fired.Material basket also can be established in discharging opening below, can offer the sidewall discharging opening on the sidewall of material chamber, can utilize Tool Room such as loading machine to take material every certain hour from the sidewall discharging opening.
On firing chamber's 1 sidewall between heating clamber 8 and the cooling chamber 9 quirk 13 is set at least, air inlet 6 is communicated with quirk 13.Can on firing chamber's inwall, keep at a certain distance away as required and be horizontally disposed with one or more quirk 13.Quirk 13 can make air-flow and fuel is easier enters in the firing chamber, can make fuel burning more fully in quirk.Can keep at a certain distance away between the quirk when many quirks are set, quirk be arranged in parallel each other, and the high temperate zone of can extending better is heated material,
Firing chamber's 1 inner chamber cross section is rounded, and 1 inner chamber cross section tangential direction is provided with inlet channel 7 along the firing chamber.Firing chamber's 1 inner chamber cross section is rounded, can make in the firing chamber more balance of thermal convection current, makes more uniform temperature in the firing chamber.1 inner chamber cross section tangential direction is provided with inlet channel 7 along the firing chamber, can make air-flow form eddy current in the firing chamber, helps air motion.Can make and form an eddy current that increases progressively to the center rotating speed from the periphery in the quirk, make fuel burning more fully in quirk, the eddy motion that increases progressively to the center rotating speed from the periphery makes air-flow converge to the eddy current center, makes thermal current enter the central area, firing chamber better, and material better is heated evenly.
On firing chamber's 1 sidewall of quirk 13 belows around concavo-convex body 15 is set.Concavo-convex body 15 lower edges are sagging, and concavo-convex body 15 lower edges and firing chamber's inwall keep at a certain distance away, can be at interval 10-12 centimetre.When this shaft furnace use coal etc. contained the fuel of grey slag ingredient, concavo-convex body 15 can be avoided coking, can make liquid object along under the concavo-convex body 15 lower edge vertical currents, falls into material, can avoid coking on firing chamber's inwall.
1 inner chamber cross section tangential direction is provided with many pressurization admission lines 18 along the firing chamber, and pressurization admission line 18 connects booster fan 19.Form the air-flow of certain pressure in the pressurization admission line, stream pressure is unsuitable excessive, avoid air-flow directly to impact firing chamber's inwall, avoids air-flow wearing and tearing firing chamber inwall.
The pressurization admission line can pass heating clamber sidewall connecting pipe, the pressurization admission line is provided with along heating clamber inner chamber cross section tangential direction, can make and form eddy airstream in the heating clamber, can well the thermal current that rises along the heating clamber inwall be upset, eddy airstream can make thermal current converge to the heating clamber center, even the heating clamber internal diameter is bigger, eddy airstream also can make the material at heating clamber center be heated, eddy airstream forms disorderly air-flow after running into material, can improve the move distance of air-flow in heating clamber, improve the holdup time of air-flow in heating clamber, realize heat transmission better, can make the material at each position in the heating clamber can thermally equivalent.
Motion is mutual, the thermal current motion makes material also move with respect to thermal current, the motion that utilizes thermal current to center on material has replaced mode of heating that material is rolled, it is the same substantially with the effect of rotary kiln to add thermal effect, also avoided lump material in rotary kiln because the broken problem of rolling and causing, make the material required energy consumption of rolling to be far longer than and to make the required energy consumption of air motion, can significantly reduce energy consumption, make kiln more energy-conservation than rotary kiln.
The heating clamber topmost is reserved one section and is not established the pressurization admission line, and the high-temperature gas in the admission line of can avoiding pressurizeing does not have enough time to pass to material promptly discharges outside the firing chamber, can the better utilization waste heat.Also can utilize the pressurization admission line in the firing chamber, to spray into chemical reaction catalyst or reducing agent, make shaft furnace become a high-temperature chemical reaction stove, available its roasting, calcine multiple lump material, granular material.
On firing chamber's sidewall of pressurization admission line 18 tops bossy body 32 is set, bossy body 32 can stop the material vertical sedimentation, bossy body 32 belows can form the space, air-flow is entered in the firing chamber, can make air-flow in the firing chamber, form an eddy current that increases progressively to the center rotating speed from the periphery, can better cut off thermal current and rise, avoid the adherent effect of thermal current, material better is heated along firing chamber's inwall straight line.
Discharging opening 12 is communicated with material chamber 20, and material gas outlet, chamber 21 is established in material chamber 20, and material gas outlet, chamber 21 connects booster fan 19.Can establish material basket gas outlet 21 at material top, chamber, material gas outlet, chamber 21 connects booster fan 19 air inlets by pipeline, can make the material that bakes in the indoor further heat radiation of material, and the material chamber also can be used as cooling chamber and uses, hot-air is sent in the firing chamber by booster fan, but the better utilization waste heat.
Sub-material device for discharging 16 is established on the axis in cooling chamber 9 bottom, sub-material device for discharging 16 bottom transverse cross sections are rounded, taper shape is arranged on sub-material device for discharging 16 tops, movable sealing mediation discharge port 17 is set on firing chamber's 1 sidewall of sub-material device for discharging 16 belows, cooling chamber 9 bottom centre establish discharging opening 12, sub-material device for discharging 16 belows are provided with cooling admission line 30, and cooling admission line 30 connects cooling blower 23.
Sub-material device for discharging 16 can be made of steel plate, steel plate can be cut into circle, diameter of a circle can be selected 0.618 times of cooling chamber internal diameter, and the steel plate top can be made into cone, can make material motion around the sub-material device for discharging better, the interior material of shaft furnace is evenly leaked down.The sub-material device for discharging can be fixed on down on the support made from rail etc., and support is fixed on the cooling locular wall and gets final product.Discharging opening and sub-material device for discharging bottom interval certain altitude can guarantee that material leaks down from discharging opening, and discharging opening is positioned at cooling chamber bottom centre can make the blanking on every side of sub-material device for discharging even.
Sub-material device for discharging 16 belows are provided with cooling admission line 33, and cooling admission line 33 connects cooling blower 23.Can make refrigerating gas enter cooling chamber more easily, the space that utilizes sub-material device for discharging below to form blows out refrigerating gas around the sub-material device for discharging, material is evenly cooled off.
But the material of prevented from caking such as this programme lime calcining is provided with movable sealing mediation discharge port 17 on firing chamber's 1 sidewall of sub-material device for discharging 16 belows, can guarantee better that kiln normally moves.
Heating clamber gas outlet 11 connects air heating device 26 gas approach 31, and air heating device exhanst gas outlet 27 connects air-introduced machine 28, and air-introduced machine 28 connects tail gas treatment device 29, and air heating device 26 heat outlets 30 connect blower fan 2.Air heating device 26 can adopt existing various waste heat collecting device, and fan air inlet can directly connect air heating device 26, and gas flow temperature is improved, and blower fan is supplied with the high-temperature gas that heated in the firing chamber, can improve heat utilization ratio.But the cooling blower air inlet also can connect air heating device 26 better utilization waste heats.
The structure of one of embodiment of the invention is: firing chamber's 1 sidewall is provided with an air inlet 6 at least, air inlet 6 connects an inlet channel 7 at least, blower fan 2 is set on the inlet channel 7, firing chamber 1 establishes heating clamber 8 and cooling chamber 9, heating clamber 8 bottoms are communicated with cooling chamber 9, charging aperture 10 is established on heating clamber 8 tops, heating clamber gas outlet 11 is established on heating clamber 8 tops, discharging opening 12 is established in cooling chamber 9 bottoms, discharging opening 12 is established device for discharging, on firing chamber's 1 sidewall between heating clamber 8 and the cooling chamber 9 quirk 13 is set at least, air inlet 6 is communicated with quirk 13.Firing chamber's 1 inner chamber cross section is rounded, and 1 inner chamber cross section tangential direction is provided with inlet channel 7 along the firing chamber.Quirk 13 is 1 inner wall surrounding setting along the firing chamber, and quirk 13 tops are provided with bossy body 14.Cooling chamber 9 is established cooling chamber air inlet 22, and cooling chamber air inlet 22 connects cooling blower 23.Heating clamber gas outlet 11 connects air heating device 26 gas approach 31, and air heating device exhanst gas outlet 27 connects air-introduced machine 28, and air-introduced machine 28 connects tail gas treatment device 29, and air heating device 26 heat outlets 30 connect blower fan 2.
The present embodiment scheme can reduce cost, is applicable to when not having the fuel of lime-ash with coal gas, natural gas, heavy oil etc., and comparable existing gas burning kiln burning is more abundant, makes that material is more uniform to be heated.
Two structure of the embodiment of the invention is: on the architecture basics of embodiment one, on firing chamber's 1 sidewall of quirk 13 belows around concavo-convex body 15 is set.
The shaft furnace of present embodiment can use coal dust etc. to contain the fuel of lime-ash, can avoid coking.
Three structure of the embodiment of the invention is: on the architecture basics of above embodiment, 1 inner chamber cross section tangential direction is provided with many pressurization admission lines 18 along the firing chamber, and pressurization admission line 18 connects booster fans 19.On firing chamber's sidewall of pressurization admission line 18 tops bossy body 32 is set.Discharging opening 12 is communicated with material chamber 20, and material gas outlet, chamber 21 is established in material chamber 20, and material gas outlet, chamber 21 connects booster fan 19.
It is more even that the shaft furnace of present embodiment can make material be heated, and makes heat pass to material more fully.Can utilize waste heat more fully, can make not flying dust of discharging opening, make more environmental protection of shaft furnace.
Four structure of the embodiment of the invention is: on the architecture basics of above embodiment, sub-material device for discharging 16 is established on the axis in cooling chamber 9 bottom, sub-material device for discharging 16 bottom transverse cross sections are rounded, taper shape is arranged on sub-material device for discharging 16 tops, movable sealing mediation discharge port 17 is set on firing chamber's 1 sidewall of sub-material device for discharging 16 belows, cooling chamber 9 bottom centre establish discharging opening 12, and sub-material device for discharging 16 belows are provided with cooling admission line 33, and cooling admission line 33 connects cooling blower 23.
The shaft furnace of present embodiment can be used for the material that lime calcining etc. is difficult for sintering into piece, can reduce the drawing mechanism cost, realizes the kiln mechanical automation.
When this shaft furnace uses, dwindle the material lumpiness as far as possible, adopt piece material can shorten firing time, cut down the consumption of energy, can improve the furnace output and the thermal efficiency greatly.Can fill the firing chamber with raw material earlier, release bottom, firing chamber raw material after the igniting gradually from the firing chamber, again these raw material be reloaded the firing chamber and get final product.During cement baking, cement slurry can be made the ball bulk, can suppress or pelletizing balling-up piece.Can not mix coal dust in the cement slurry, can make the cement quality better, comparable existing cement rotary kiln equipment reduces cost greatly, cuts down the consumption of energy greatly, and environmental protection more also can be used this shaft furnace technical scheme existing cement shaft furnace is transformed.
When producing lime, can fire little lump lime, the 3-5 that the output of firing chamber's lime of unit volume can reach existing limekiln doubly more than, it is higher to produce fritter lime output, produces lime output with the building stones of 2-4 centimetre or 3-5 centimetre and can improve more than 3-5 times.Fritter lime activity is higher, and it is better that lime is fired maturity, and energy consumption can reduce more than 50% than traditional limekiln.Chamber temperature can be controlled within 1200 degree, the lime burn-off phenomenon can not occur, can burn out the little lump lime of highly active superfine.
During the roasting copper sulfide concentrate, can from tail gas, make sulfuric acid.Aluminium hydroxide can be pressed into block material when firing aluminium oxide, calcining gets final product in the kiln of packing into, and comparable existing aluminium oxide is fired equipment and reduced cost greatly, cuts down the consumption of energy greatly, more environmental protection.
When using solid fuel; earlier it is ground into a certain size particle; thin more good more; tiny particle can fully burn in eddy current, and the control fuel flow rate can be controlled combustion power, when using solid fuel; can use the auger conveyor transfer the fuel; auger conveyor adopts buncher, regulates motor speed and gets final product regulate fuel flow, can control combustion intensity.Also can use existing coal-grinding and powder-spraying machine directly to supply with fuel when using coal dust.
Each compressor flow among the present invention can come the layout computer program according to temperature sensor, can control combustion power by computer, computer control fuel flow rate, computer control ignition temperature, computer control firing chamber temperature, computer control discharging speed can use existing computer technology that equipment is carried out Microcomputer Management.Can locate to be provided with point for measuring temperature at quirk, heating clamber gas outlet, discharging opening etc., control the kiln operation according to temperature.
Can transform existing shaft furnace, shaft kiln etc. with this shaft furnace technology, can make them reach, surpass present environmental requirement.Their output is significantly improved, and product quality significantly improves, and energy consumption reduces greatly.Make backward production capacity be changed new life, make original old kiln be unlikely to removing in vain, social resources are fully utilized.The energy-saving and emission-reduction of this shaft furnace, environmental protection, the utilization of resources etc. are significant.
Technical scheme of the present invention is not restricted in the scope of embodiment of the present invention.The present invention not technology contents of detailed description is known technology.
Claims (10)
1. shaft furnace, comprise: fuel supply system, igniter, device for discharging, firing chamber (1), refractory material (4), insulation material (5), blower fan and pipeline (3), it is characterized in that: firing chamber (1) sidewall is provided with an air inlet (6) at least, air inlet (6) connects an inlet channel (7) at least, blower fan (2) is set on the inlet channel (7), firing chamber (1) establishes heating clamber (8) and cooling chamber (9), heating clamber (8) bottom is communicated with cooling chamber (9), charging aperture (10) is established on heating clamber (8) top, heating clamber gas outlet (11) is established on heating clamber (8) top, discharging opening (12) is established in cooling chamber (9) bottom, discharging opening (12) is established device for discharging, on firing chamber (1) sidewall between heating clamber (8) and the cooling chamber (9) quirk (13) is set at least, air inlet (6) is communicated with quirk (13).
2. shaft furnace according to claim 1 is characterized in that: firing chamber (1) inner chamber cross section is rounded, and (1) inner chamber cross section tangential direction is provided with inlet channel (7) along the firing chamber.
3. shaft furnace according to claim 1 is characterized in that: quirk (13) is (1) inner wall surrounding setting along the firing chamber, and quirk (13) top is provided with bossy body (14).
4. shaft furnace according to claim 3 is characterized in that: on firing chamber (1) sidewall of quirk (13) below around concavo-convex body (15) is set.
5. shaft furnace according to claim 1 is characterized in that: cooling chamber (9) is established cooling chamber air inlet (22), and cooling chamber air inlet (22) connects cooling blower (23).
6. shaft furnace according to claim 1 is characterized in that: (1) inner chamber cross section tangential direction is provided with many pressurization admission lines (18) along the firing chamber, and pressurization admission line (18) connects booster fan (19).
7. shaft furnace according to claim 6 is characterized in that: on firing chamber's sidewall of pressurization admission line (18) top bossy body (32) is set.
8. shaft furnace according to claim 6 is characterized in that: discharging opening (12) is communicated with material chamber (20), and material gas outlet, chamber (21) is established in material chamber (20), and material gas outlet, chamber (21) connects booster fan (19).
9. shaft furnace according to claim 1, it is characterized in that: cooling chamber (9) is established sub-material device for discharging (16) on the axis, bottom, sub-material device for discharging (16) bottom transverse cross section is rounded, taper shape is arranged on sub-material device for discharging (16) top, movable sealing mediation discharge port (17) is set on firing chamber (1) sidewall of sub-material device for discharging (16) below, cooling chamber (9) bottom centre establishes discharging opening (12), sub-material device for discharging (16) below is provided with cooling admission line (33), and cooling admission line (33) connects cooling blower (23).
10. according to claim 1,2,3,4,5,6,7,8 or 9 each described shaft furnaces, it is characterized in that: heating clamber gas outlet (11) connect air heating device (26) gas approach (31), air heating device exhanst gas outlet (27) connects air-introduced machine (28), air-introduced machine (28) connects tail gas treatment device (29), and air heating device (26) heat outlet (30) connects blower fan (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010102122A CN101738081A (en) | 2010-01-23 | 2010-01-23 | Shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010102122A CN101738081A (en) | 2010-01-23 | 2010-01-23 | Shaft kiln |
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| CN101738081A true CN101738081A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010102122A Pending CN101738081A (en) | 2010-01-23 | 2010-01-23 | Shaft kiln |
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| CN (1) | CN101738081A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867588A (en) * | 2015-12-14 | 2017-06-20 | 神华集团有限责任公司 | Tripper, sub-material ejection assemblies, gasification furnace and synthesis gas production method and system |
| CN111426208A (en) * | 2020-03-18 | 2020-07-17 | 武汉悟拓科技有限公司 | Vertical air draft sintering machine and sintering process |
| CN114656170A (en) * | 2022-03-29 | 2022-06-24 | 唐山市丰南区金泉冶金能源新技术开发有限公司 | Process and device for co-producing active lime by natural gas and biomass fuel |
-
2010
- 2010-01-23 CN CN201010102122A patent/CN101738081A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867588A (en) * | 2015-12-14 | 2017-06-20 | 神华集团有限责任公司 | Tripper, sub-material ejection assemblies, gasification furnace and synthesis gas production method and system |
| CN111426208A (en) * | 2020-03-18 | 2020-07-17 | 武汉悟拓科技有限公司 | Vertical air draft sintering machine and sintering process |
| CN111426208B (en) * | 2020-03-18 | 2022-05-13 | 武汉悟拓科技有限公司 | Vertical air draft sintering machine and sintering process |
| CN114656170A (en) * | 2022-03-29 | 2022-06-24 | 唐山市丰南区金泉冶金能源新技术开发有限公司 | Process and device for co-producing active lime by natural gas and biomass fuel |
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Application publication date: 20100616 |