CN106108096B - Intensive flue-cured tobacco side's tub reverse burning furnace and its application method - Google Patents

Abstract

Intensive flue-cured tobacco side's tub reverse burning furnace, including furnace roof, square tubbiness bosh, fire bars and L-type fire door, bosh inner chamber length of side 0.8m~1.0m height 1.2m~1.5m, above fire bars be coal piling area in bosh, lower section be static pressure area, without horizontal clearance, vertical holes device to hole between coal piling area Honeycomb coal briquet, bosh side wall opens up a gathering hole contour with bosh, and bosh inner chamber is connected by gathering hole with square tube shape and inverted operating walk way, fire door bottom stretching, extension body closing static pressure area side wall.The fritter bituminous coal just fired is filled in into coal bed end face center, temperature controller regulation and control blower fan start-stop, whole air even into briquet column-like paths and occur completely burned with piston stream mode, complete open fire reverse combustion heat supply in 6~7 days.Invention can be used in tobacco modulation industry flue-cured tobacco generation hot blast.Invention disposably is comfortably coaling, and CO discharges reduce by 75%, economize on coal 25%, can be close to toast curve heat supply, does not fall warm overtemperature burning blower fan, burning local cellular briquet.

Description

Intensive flue-cured tobacco side's tub reverse burning furnace and its application method

Technical field

Invention is related to one kind and uses cube shape Honeycomb coal briquet, is baked based on counter burn of flaming with the intensive of furnace temperature auto-control principle Cigarette side's tub reverse burning furnace and its application method, dried suitable for agriculture rural area field tobacco leaf Processing farage industry intensive flue-cured tobacco and scattered leaf The roasting hot blast place that produces uses.

Background technology

According to incompletely statistics, 30%~40% tobacco planting base and tobacco grower cooperative society are led to using continuous tunnel furnace generation hot blast Enter to fill cigarette room.Continuous tunnel furnace uses the high 75mm family expenses life beehive coal balls of internal diameter 110mm, can disposably load 800~1000 honeybees Nest coal briquette, 5~6 days tobacco flue-curing combustion heat supplying needs can be met, can guarantee that tobacco flue-curing season tobacco grower rest substantially, do not influence Second day production efficiency, rural laborer it is in short supply have certain market potential now.Due to continuous tunnel furnace fault of construction and stove Interior flowing heat transfer combustion process deficiency, is difficult to avoid that deashing comfortableness of coalingging is poor during use, the thermal efficiency as little as 50% so that In midway coal deashing number 1~3 time, furnace temperature regulating is poor, and falling temperature can not be close to toast curve heat supply, and overtemperature furnace temperature is out of control, The problems such as burning combustion fan.

As shown in Figure 3, continuous tunnel furnace furnace chamber 1.4m is long, 0.73m is wide, 0.9m is high, by 40mm~60mm thickness high-temperature flame-proofs The concavo-convex matching of brick is coated with high temperature clay and surrounded, and burner hearth cavity is in in-line, is not provided with fire bars, burner hearth burner hearth be both combustion chamber and Dust collection chamber, each external relative one of burner hearth both endsCast iron fire door.One people passs outside when continuous tunnel furnace is coaling The people of coal briquette one banks up coal briquette inside, and (height 1.6m) operative employee contacts to earth to crawl into after furnace chamber to be pedaled posture regression in bent leg and bank up coal entirely Ball, comfort level of coalingging are poor.First by banking up coal briquette on the inside of exhaust opening fire door, coal briquette hole device to hole as far as possible, coal briquette layer height is banked up 0.6m, regression bank up 1.2m length, vacate 0.2m~0.3m spaces to place kindling.The combustion air part that blower fan blasts flows into The coal seam inter-air space discharges heat, generates high temperature CO to combustion front₂Gas, CO₂Gas is moved along contacting coke or briquet quilt CO is reduced into, further reduces combustion heat release, furnace temperature is shown and rises not up, falls 2 DEG C of temperature (hot blast temperature is less than baking curve) ~8 DEG C.Fire door surrounds high temperature combustion zone, and fire door temperature is up to 180 DEG C~280 DEG C, fallen by fire door hyperthermia radiation and high-temperature furnace gas Stream is influenceed, shell temperature rise, and blower fan draft capacity, which reduces, to be even burned out.Gently blower fan is burnt out to reduce furnace temperature superelevation, falling Frequently supervision turns into one of tobacco flue-curing basic administrative task by influence to dry tobacco leaf quality, changing yellow stage and fixation stage operative employee.

Development structure is simple, and cost is low, disposably comfortably coaling by adapt to rural laborer it is in short supply in the form of needs, flow in stove Dynamic heat transfer burning tissues are reasonable, energy-saving and emission-reduction safety and comfort, the intensive flue-cured tobacco house hot-air stove of saving of labor's cost declining, can meet current Amphitypy society need is built, promotes tobacco business sustainable development.

The content of the invention

In order to overcome continuous tunnel furnace disposably can not comfortably coaling, flowing heat transfer combustion process does not conform in unreasonable structure and stove Manage the overtemperature brought to fall temperature and burn blower fan, dying fire is just burning and the big shortcoming of fire door thermal radiation loss, and invention, which devises one kind, to be had " high and big vertical furnace chamber, coaling passage and deashing passage is combined into one, high operating walk way, closed static pressure area and high L The light-duty fire door of font " architectural feature, " open fire reverse combustion, furnace temperature auto-control, high temperature isolation " technical characteristic, " disposably coalings clear Ash；Coalingging, it is grey comfortable to unload；Economize on coal, the low CO discharges of flue gas；It is controllable that hot blast temperature is adjustable, is close to baking process curve heat supply, without super Temperature, do not fall temperature；Do not burn blower fan " etc. beneficial effect intensive flue-cured tobacco side's tub reverse burning furnace and its application method.

Intensive flue-cured tobacco side's tub reverse burning furnace, mainly including furnace roof, bosh, fire bars and fire door, furnace roof is in cylinder-shaped, furnace roof bottom End face edge is square, and furnace roof bottom face four is overlapped while with bosh top end face four and full weld connects, and bosh inner chamber is in just cube Horizontal stationary furnace is highly located in tubbiness, length of side 0.8m~1.0m, height 1.2m~1.5m, bosh inner chamber from bottom plate 200mm~350mm Bar, fire bars lower section is static pressure area, top is coal piling area, and coal piling area neatly stacks the Honeycomb coal briquet in cube shape, briquet and bosh Internal face level interval 5mm~10mm, gapless between horizontally adjacent two briquet, vertical adjacent two briquets hole device to hole are in be formed Numerous gas channels of thin bar shape, coal bed top surface open up one and bosh side on bosh top end face among the side wall of bosh one The gathering hole that wall is contour and 0.6m~0.8m is wide, the side of gathering hole two perpendicular to bosh bottom plate, bosh inner chamber by gathering hole and Be inverted and be connected in the operating walk way of square tube shape, operating walk way top surface and bosh top end face are coplanar, operating walk way left port and Gathering hole overlap and full weld connection, right side in hot air chamber front wall outside wall surface, right output port is by fire resistant heat preserving type oven door sealing, stove Door is in L-shaped, and fire door includes filling in operating walk way inner chamber in the bottom stretching, extension body of cube shape, bottom stretching, extension physical efficiency and closing static pressure Area's side wall breach.

During using intensive flue-cured tobacco side's tub reverse burning furnace, burning 1~2 block of bituminous coal is filled in into coal seam end face center first, It is then switched off and fixes fire door, last temperature controller auto-control combustion fan start-stop, until tobacco flue-curing in 6~7 days terminates.

Tobacco Processing farage industry, tobacco planting processing base and tobacco grower cooperative society dense tobacco flue-curing house and loose-leaf curing use Cube shape honeycomb smokeless briquet combustion heat supplying device, hot air chamber or hot-blast stove, invention can be used.

Invention operation is more comfortable, and energy conservation and environmental protection benefit is notable, and security performance improves.The disposable deashing of coalingging of invention, coalings Comfortably, igniting is ignited simple, and deashing is easy；Flue gas CO discharges reduce by 75%, save fire coal 25%；Combustion fan start-stop is to hot blast Temperature adjusting is functional, can be close to baking process curve generation hot blast, and no overtemperature falls warm problem；Blower fan temperature is consistently lower than 38 DEG C, no high temperature burning problems；Use the smokeless briquet of cube shape honeycomb.

Brief description of the drawings

Fig. 1 is the vertical sectional view of intensive flue-cured tobacco side's tub reverse burning furnace.Fig. 2 is the level of intensive flue-cured tobacco side's tub reverse burning furnace Sectional view.In Fig. 1~Fig. 2,1 is furnace roof, and 2 be bosh, and 3 be fire bars, and 4 be fire door.Fig. 3 is the vertical sectional view of continuous tunnel furnace.Fig. 3 In, arrow represents air current flow direction, and imaginary curve represents combustion front.

Embodiment

Invention is further described below in conjunction with the accompanying drawings.

As shown in 1~accompanying drawing of accompanying drawing 2, intensive flue-cured tobacco side's tub reverse burning furnace, mainly include furnace roof 1, bosh 2, fire bars 3 and stove Door 4.

In cylinder-shaped, the bottom face edge of furnace roof 1 is square furnace roof 1, the bottom face four of furnace roof 1 while and during 2 top end face four of bosh Overlap and full weld connects, the top end face center hole of furnace roof 1 is from kiln gas outlet.

The inner chamber of bosh 2 is in just cube tubbiness, length of side 0.8m~1.0m, height 1.2m~1.5m.The inner chamber horizontal cross-section of bosh 2 Shape can be rectangle, can also be had a rectangular shape.Cavity heights 1.2m~the 1.5m of bosh 2 is high in existing hot air chamber crown wall Under 2.5m limitations, the maximum height that can be utilized after spatial altitude shared by mixing chamber and heat exchange single tube is deducted, while consider to fill to the greatest extent The balance result of possible more Honeycomb coal briquets.The inner chamber length of side 0.8m~1.0m of bosh 2, one, which considers hot air chamber, can utilize space wide 1.4m is spent, the two considers operative employee in the inner chamber activity of bosh 2 freely, can comfortably coaling, three leads the big cross section of fixed bed The negative effects such as temperature field inhomogeneous broadening effect, wall effect and the funneling effect of cause are reduced to minimum level.The inner chamber of bosh 2 is the bottom of far from Plate 200mm~350mm highly locates horizontal fixed grate 3.The cavity region of bosh 2 of the top of fire bars 3 is coal piling area, lower section is static pressure Area.Coal piling area neatly stacks the Honeycomb coal briquet 5 in cube shape, and the briquet 5 and internal face level interval 5mm~10mm of bosh 2 is horizontal Between adjacent two briquet numerous gas channels in thin bar shape, coal are formed without obvious gap, vertical adjacent two briquets hole device to hole Bed top surface is on the top end face of bosh 2.Honeycomb coal briquet 5 is uniformly distributed numerous rounded or square vertical gas channel.In bosh 2 Chamber is in cube shape, and Honeycomb coal briquet 5 is in short cube shape (can not be in short cylindric), is easy to gapless between horizontally adjacent two briquet, Obvious gap between coal briquette and coal briquette not as beehive coal ball be present, it is difficult to avoid air flow shortcircuit phenomenon from occurring.Static pressure area As collection gray area.Most of lime-ash shovels out above fire bars 3, and it is small to leak through the grey quantity of slag of fire bars 3, the high 200mm~350mm of collection gray area The leakage ash of lower fire bars 3 can be contained, and can smoothly be shoveled out with spades.Collect gray area height limitation in 200mm~350mm, heap can be increased Coal area height, so as to increase disposable coal capacity.The material of fire bars 3 is cast iron materials, is used for a long time under hot environment indeformable. The inwall of 3 top bosh of fire bars 2 sticks 300mm~500mm height, 30mm~50mm thickness fire brick layers.The top 300mm of fire bars 3~ The inwall of bosh 2 within 500mm is big by spades mechanical impact probability, sticks thickness 30mm~60mm refractory brick to extend burning Heating plant service life.

Open up a gathering hole among the side wall of bosh 2 one, operate open height and the Sidewall Height of bosh 2 is equal, width is 0.6m~0.8m, the side of gathering hole two is perpendicular to the bottom plate of bosh 2.Gathering hole top margin and base are that horizontal line section, two sides are Vertical line segment.The inner chamber of bosh 2 is connected by gathering hole with inversion and in the operating walk way of square tube shape.Push up operating walk way left side Side and base are that horizontal line section, two sides are vertical line segment.Operating walk way right side is in hot air chamber front wall outside wall surface, and behaviour It is vertical to make passage top surface, bottom surface, two sides.Operating walk way left port is overlapped with gathering hole and full weld connects, i.e. operating walk way Left side top margin and gathering hole top margin overlap and full weld connects, operating walk way left side base and gathering hole base coincident and full weld Connection, the side of operating walk way left side two and the side of gathering hole two overlap and full weld connects.

The gathering hole of bosh 2 and operating walk way use when coalingging deashing.Fire door 4 in L-shaped, 900 DEG C~1100 DEG C of heatproof, Width and gathering hole width are equal, highly equal with operation open height.Fire door 4 includes cube shape bottom stretching, extension body, bottom stretching, extension Body left side and fire bars gathering hole below 3 or the seamless connection of static pressure area side wall breach, operating walk way inner chamber and complete can be filled in Totally-enclosed static pressure area side wall breach so that static pressure area does not connect with operating walk way inner chamber.Stretching, extension body effect in bottom is to form static pressure Area, ensure static pressure area's static air pressure and air penetration ability so that the air that blower fan is sent into all can enter coal by fire bars 3 Bed, no air by-pass flow into exhaust opening, and whole air are effective to coal bed top combustion face, air with piston stream mode Uniform Flow Utilization rate reaches 100%.Operating walk way right output port is sealed by fire door 4.

Invention is placed in intensive flue-cured tobacco hot air chamber and used.Operating walk way right side and the positive front wall outside wall surface of hot air chamber are coplanar. When operating walk way right output port is by fire door 4, the metal coverboard of fire door 4 is close to the positive front wall outside wall surface of hot air chamber, does not enter in operating walk way, To facilitate fire door 4 normally to fill in and extract, i.e., normally-open and shutoff operation passage right output port.Gathering hole width, operating walk way Width and the width of fire door 4 are equal, are 0.6m~0.8m.The cavity heights of bosh 2, operation open height, operating walk way height and fire door 4 It is highly equal, it is 1.2m~1.5m.Gathering hole width 0.6m~0.8m, operative employee is not hindered not only to be filled into the coal piling area of bosh 2 Briquet, and more heats can be prevented to be radiated operating walk way and fire door 4, and then maintain the inner chamber combustion high temperature of bosh 2.

Furnace roof 1, bosh 2 and operating walk way shell are linked into an integrated entity for full weld and seamless metal shell, metal shell Thick 3mm~5mm, to ensure the sealing of invention intracavity space, and then ensure furnace temperature Modulatory character.On the inwall of furnace roof 1, bosh 2 The inwall of half inwall and operating walk way in addition to bottom plate sticks the thick integral type refractory casting layers of 30mm~50mm.The bottom plate of bosh 2 and Operating walk way bottom plate is patch ground flat board, that spades moves back and forth patch thing in frictional force damage bottom plate be present, in addition static pressure area temperature Low, no high temperature scaling loss potential problem is spent, therefore static pressure area inwall and operating walk way plate inner wall do not stick refractory brick or fire resisting is poured Note layer.Metal shell inwall sticks 30mm~50mm thickness castable refractory or refractory brick, can both limit flame retardant coating and furnace wall is dissipated The inhibition of heat, can avoid the direct contacting metal housing of thermal-flame and high temperature corrosion occurs, to extend metal shell again Service life.

Invention inner chamber includes the inner chamber of furnace roof 1, the inner chamber of bosh 2 and operating walk way inner chamber.The inner chamber of bosh 2 is divided into coal piling area and quiet Nip two parts, static pressure area side wall open up ventilating opening, so that the combustion air driven by blower fan enters.The inner chamber top end face of furnace roof 1 Center hole is exhaust opening, and exchanger heat gas approach is tightly connected.The inner chamber bottom face of furnace roof 1 and the inner chamber top end face of bosh 2 Overlap, the inner chamber of bosh 2 passes through the wide gathering holes of 0.6m~0.8m and operating walk way intracavity inter-connection that are opened up in the side wall of bosh 2, behaviour Make channel lumen right output port to be sealed by fire door 4.

Invention process and assemble order be：Roll bending cold working goes out furnace roof 1, bosh 2, operating walk way and fire door 4 four parts Metal shell；Gathering hole is processed in the side wall of bosh 2 one；Fire bars 3 is processed, then in the inner chamber fixed grate 3 of bosh 2.In stove Push up 1 internal face, uniform welding V-shaped peg on the middle and upper part internal face of bosh 2 and operating walk way internal face, peg depth 20mm ~30mm；Uniformly cast in peg region aluminum phosphate refractory material；A small amount of firewood is used, by Free water in refractory lining and change Heshui slowly separates out, and prevents refractory lining from coming off, melts downslide or high temperature spalling and reduction of service life；In the middle and lower part of bosh 2 Wall pastes abdomen refractory brick.The bottom face edge of furnace roof 1 is overlapped with the side of 2 top end face of bosh four and full weld connects, the gathering hole of bosh 2 and operation Passage left port full weld connects.

During using intensive flue-cured tobacco side's tub reverse burning furnace, the top lime-ash of fire bars 3 is first emptied, then empties the lower section lime-ash of fire bars 3.Behaviour Workmanship in partly pedal or bend over posture from operating walk way enter the inner chamber fire bars 3 of bosh 2 on, Honeycomb coal briquet 5 passed outside stove into.Honeycomb Briquet 5 is regular cube.When being stacked briquet 5 in the inner chamber of bosh 2, make every effort to neatly stack, between briquet 5 and the internal face level of bosh 2 Away from 5mm~10mm, without obvious gap between horizontally adjacent two briquet, vertical adjacent two briquets hole device to hole, is in buttress shaft to be formed Numerous gas channels of body shape.Coal bed top surface can meet 6~7 days baking continuous burnings of intensive flue-cured tobacco when on the top end face of bosh 2 Heat supply needs.Operating walk way inner chamber beyond the inner chamber of bosh 2 does not bank up briquet 5, avoids big fire from firing to operating walk way, increases to stove The hyperthermia radiation corrosion of door 4 and heat loss.Heap to top space-time goes out 1~2, gathering hole edge briquet, by burning 1~2 Block bituminous coal fills in top end face center from top vacancy.After operative employee exits operating walk way, it is logical that fire door 4 is filled in into operation Road right output port, seal operation passage right output port are simultaneously fixed fire door 4.Temperature controller humiture time parameter is set and makes its startup Operation, start and static pressure area UNICOM and the blower fan that is controlled by temperature controller, blower fan air is sent into static pressure area, whole air are in coal Uniformly flowed up into numerous buttress shaft shape gas channels in piston flow shape in layer, combustion front is slowly moved to from the top of bosh 2 The top surface of fire bars 3, long-time naked light backfire stable heating, you can be close to baking process curve and be warming up to 68 DEG C upwards, until baking Terminate, safe and stable operation 6~7 days, complete changing yellow stage, fixation stage and scapus phase combustion heat supplying task.Whole baking process is not Blow-on door 4, no fire door 4, which opens wide existing hyperthermia radiation heat loss and short time furnace temperature, reduces problem.

Tobacco leaf total amount and moisture are loaded according to tobacco flue-curing house, it is total to roughly estimate the coal briquette for completing to toast required by task Amount.In the total amount of briquet 5 useful load total less than the coal piling Qu of bosh 2, briquet 5 is disposably all filled by operating walk way and gathering hole Enter the coal piling area of bosh 2, coal bed top surface is in plane.Coal bed end face center fills in 1~2 block of bituminous coal being just burning, then bituminous coal The smokeless briquet for surrounding of slowly igniting.Bituminous coal dust content is low, and lime-ash is few after combustion, and coal bed gas channel blocking probability is low, energy The flowing that holding air is upward through fire bars 3 to combustion zone Zi collection gray area is unimpeded.Bituminous coal calorific value is high, volatile matter is more, ignition temperature Height, can steadily light the selected anthracite of high ignition point (the selected anthracite of such as Korea), improve igniting and ignite success rate.Use When content of ashes is up to 50% local cellular briquet 5, the anchracite ball igniting that 1~2 fritter is just being burning can be used instead and ignited.

During using invention, dress cigarette room is constant, and hot blast chamber size 1.4m × 1.4m is constant, and temperature controller and control circuit are constant, Combustion fan and circulating fan specification are constant, it is only necessary to change hot-blast stove and heat exchanger.

Inventive structure feature, technical characteristic and the technique effect that brings are described in detail as follows：

Invention is with " high and big vertical furnace chamber " architectural feature.Invention furnace chamber is tall and big, furnace chamber volume is big, and burner hearth holds Product effective rate of utilization is high, then can load more fire coals, and realization is disposably coaling, and mitigates operative employee's labor intensity.Such as the institute of accompanying drawing 3 Show, continuous tunnel furnace burner hearth long 1.4m, 0.73m is wide, 0.9m is high, coal bed highly only have 600mm, and have in coal bed it is unavoidable not It is (single can only to load local life beehive coal ball 800~1000 less than 80% for uniform gap, combustion space effective rate of utilization The high 75mm of coal briquette), needs of disposably coalingging can be met in theory.Because body of heater accumulation of heat is more, fire door radiant heat loss is big, flue gas CO discharges are more, and the thermal efficiency is low, and coal consumption is big, and 800~1000 coal briquettes tend not to meet baking needs, are exactly in the room of fine day one Portion leaf toasts 5~6 days, and as many as coal 1~3 time also want in centre, it is difficult to realize target of disposably coalingging, not to mention the rainy day and on Midway needs to add coal briquette number during portion's leaf baking.Cavity heights 1.2m~the 1.5m of invention bosh 2, length of side 0.8m~1.0m, honeybee Gapless, the briquet 5 and internal face gap as low as 5mm~10mm of bosh 2, combustion space effective rate of utilization reach between nest briquet 5 100%, the coal bed up to top end face of bosh 2, disposable coal capacity and continuous tunnel furnace are suitable, and the invention thermal efficiency is higher by continuous tunnel furnace 25%, natural energy of disposably coalingging is kept for the longer combustion heat supplying time.Barn dress cigarette slightly above 2.5 tons, the rainy day harvesting and Using invention under the conditions of upper tobacco leaf, without midway deashing coal, accomplish 6~7 days baking combustion heat supplyings of completion of disposably coalingging Task.

Invention has that " vertical furnace chamber, high furnace chamber, coaling passage and deashing passage is combined into one, and operating walk way is high Degree is high, the architectural feature such as high fire door 4 ".As shown in Figure 3, continuous tunnel furnace coal piling area, collect gray area, channel lumen of coalingging, deashing and lead to Road inner chamber is unified, no fire bars, and fire door only has that 560mm is high, and operative employee, which can only contact to earth, to creep into furnace chamber, then pedals regression heap entirely Coal briquette is put, furthermore width is small, space is small, and highly short, air flow is not smooth, appearance is felt oppressed sense to a certain degree, is coaling to operate and is not relaxed It is suitable, it is difficult to meet hole device to hole, the seamless requirement between adjacent two coal briquette with row of horizontal.Invention vertical type burner hearth, coal piling area are collecting On gray area, eliminate towards coal piling area coaling passage and towards collection gray area deashing passage between public wallboard, coaling logical Road and deashing passage are merged into operating walk way, and operating walk way cavity heights and fire door 4 are highly up to 1.2m~1.5m, and operative employee can With in slightly pedal or slightly bend over posture disengaging furnace chamber, tall and big plus thorax in stove, air flow is smooth, is not in sense of feeling oppressed, grasp Workmanship is gone slick in furnace chamber, and realization is comfortably coaling, and the requirement of the coal piling such as hole device to hole and briquet gapless is easily with satisfaction.

Invention has the " architectural feature of L-shaped fire door 4 ".Invention fire door 4 is used for seal operation passage right output port, prevents outer Boundary's air penetration together, surrounds closing to operating walk way and the inner chamber of bosh 2, the bottom of fire door 4 stretching, extension body left side and the side wall of bosh 2 Static pressure area, cut-out static pressure area air by-pass flow to the passage of operating walk way inner chamber and the inner chamber of bosh 2.Fire door 4 meets to seal simultaneously Operating walk way right output port and closing static pressure area, there is provided the essential condition of furnace temperature auto-control.

Invention has " closed static pressure area " architectural feature.Continuous tunnel furnace static pressure area is in unenclosed construction.As shown in Figure 3, It is static pressure area that the region that 2~3 floor coal briquette are vacated is vacated during continuous tunnel furnace coal piling to entrance point fire door, because burner hearth coal piling is to arriving 0.6m is high, and furnace roof internal face to about 130mm between coal bed top surface height space have become air by-pass and rapidly flowed to exhaust opening Passage, i.e. static pressure area top surface is unlimited.Bosh 2 inner chamber of the invention fire bars below 3 is static pressure area.Because the bottom of fire door 4 is stretched The seamless connection in gathering hole edge below 3 of body left side edge and fire bars is opened up, static pressure area side wall is closed, and blower fan blasts in static pressure area Air all uniformly flow into the numerous thin bar shape gas channels of coal bed upwards by fire bars 3, establish bar for furnace temperature auto-control Part.

Inventive structure feature " high and big vertical furnace chamber " can guarantee that and disposably coaling, and meet nowadays countryside labour market Need.Architectural feature " high and big vertical furnace chamber, the passage and deashing passage is combined into one, operating walk way is highly high, high of coalingging Fire door 4 " can guarantee that deashing operation of coalingging is comfortable, accomplish that tobacco flue-curing is people-oriented.Architectural feature " vertical furnace chamber, short fire door 4th, closed static pressure area " is the precondition of " flowing heat transfer combustion process is scientific and reasonable in stove ".

" vertical type furnace chamber, static pressure area closing " architectural feature and " led from coal bed end face center igniting ignition in hydriding operating method The technical characteristic of cause is " open fire reverse combustion ".Continuous tunnel furnace dying fire just burns heat supply.As shown in Figure 3, continuous tunnel furnace is lighted a fire from coal bed downstream Ignite, blower fan drives air to be flowed to coal bed oblique upper direction, burns and is moved towards coal bed oblique upper direction, meets dying fire and just burn Principle, the coal bed in combustion front oblique upper is by high-temperature baking, and carbonization gas, volatile matter are together with high temperature CO in coal bed₂Gas connects Tactile high-temperature coke is reduced the CO gases of generation together, flows out coal bed to coal bed oblique upper direction, is finally dissipated through exhaust opening Lose, the thermal efficiency as little as 50% or so.What is more important, the CO air-flows of discharge have interior heat energy, and combustion heat release amount is reduced, burning Thermal discharge does not reach maximum, and the unstable air mass flow for directly resulting in combustion heat release amount and participating in combustion reaction of content of CO in smoke is not It is directly proportional, increase the difficulty with air mass flow auto-control furnace temperature process.The air that invention is driven by blower fan enters static pressure area, Static pressure area side wall and bottom plate No leakage, it is bottom-up uniformly across coal bed that combustion air completely extends across fire bars 3.Whole air are with work Plug flow fashion flows uniformly through coal bed, since coal bed end face center igniting ignite, combustion front slowly moves from up to down, combustion front Moving direction and air-flow direction are on the contrary, realize open fire reverse combustion heat supply.When combustion front moves down, constantly preheating contacts Bottom coal briquette and air, the carbonization gas that briquet is formed when preheating enter combustion front and completely burned reaction occur, and leave combustion front High temperature CO₂There is no high-temperature coke to contact when gas flows up, i.e. life does not become reducibility gas CO, and so discharge fume CO₂Gas Body content is high, CO gas contents are extremely low.So, combustion heat supplying process energy conservation, the discharge of low stain thing, what is more important are realized Smoke evacuation is without interior heat-energy losses, and combustion heat release amount reaches maximum, and exothermic maximum amount and air mass flow are directly proportional, to be adjusted with air mass flow Control furnace temperature process creates advantage.Usually, open fire reverse combustion technology is just for graininess, block cigarette coal clean combustion mesh , domestic honeycomb coal-firing device uses anthracite, makes beehive coal ball, and it is in the majority based on dying fire just to burn principle person, is applied to Anthracite Honeycomb coal briquet burner and method report based on open fire reverse combustion principle is extremely rare.

Technical characteristic caused by " vertical furnace chamber inner chamber, closed static pressure area " architectural feature and " open fire reverse combustion " technical characteristic It is " it is controllable that furnace temperature is adjustable ".How much Combustion of Hot Air Furnace heat release is proportional to the air mass flow size for participating in combustion reaction.Operating walk way The air that inner chamber is detained, which can bypass, flow to exhaust opening, and then reduces air effective rate of utilization, reduces air mass flow to combustion heat release The regulatory function of amount.Invention static pressure area closes, and whole air uniformly flow up in coal bed in piston flow shape, and no air is through stove Gathering hole of the bar below 3 is bypassed to operating walk way region.Although coal piling area coal bed is directly contacted by the gathering hole of fire bars more than 3 Operating walk way inner chamber, but air, when coal bed is walked, coal bed gas channel and exhaust opening negative pressure form and are drawn up power, static pressure area Static pressure, which is formed, flows up driving force and high-temperature flue gas density forms upward buoyancy lift and causes air flows upwards in coal bed, water Square to outflow coal bed can be neglected to the air capacity in operating walk way region.Final whole air pass through coal bed with piston stream mode, Whole catalytic combustion faces and burn discharge net quantity of heat, air utilization ratio reaches 100%, i.e., the air mass flow that blower fan blasts and The consumed air mass flow of combustion front burning is equal directly proportional.Tight between briquet and briquet, it is natural without combustion-supporting short-circuit of air Influence, ensure performance of control of the blower fan start-stop to furnace temperature.Obviously, air is to the performance of control of combustion heat release, depending on static pressure area Closure and operating walk way inner chamber air trapping amount, operating walk way inner chamber air trapping amount seal depending on operating walk way right output port Property.For coal bed top surface on the top end face of bosh 2, operating walk way can be fully sealed in gapless between coal briquette hole device to hole and briquet, fire door 4 Right output port, be advantageous to the air regulation process for maintaining blower fan start-stop to participating in combustion reaction.As shown in Figure 3, continuous tunnel furnace Static pressure area does not close close to entrance point fire door, static pressure area top surface, and air blower blasts most of air by-pass in static pressure area to coal bed Gas-phase space on top surface simultaneously rapidly flows toward exhaust opening (oxygen-containing up to 11%~12%) of smoke evacuation, remainder is penetrated so that cloth is bag-shaped Stream mode flows into the coal bed inter-air space.The bag-shaped jet of cloth Convention diffusion in coal bed needs to overcome larger resistance, and lime-ash ball stops Combustion air flow to combustion front, stops that heat smoke floating flow to furnace roof gas-phase space, and unburned coal briquette stops heat smoke flow forward, The air mass flow of final participation burning is few, and combustion heat release is few, and content of CO in smoke is high, interior quantity of heat storage is more, further reduces burning and puts Heat, general performance come out of the stove temperature rise not up, and hot blast temperature is less than 2 DEG C~8 DEG C of preset temperature.The simply sky of stove chamber inner combustion consumption Sub-fraction in gas, the air mass flow and the air mass flow that combustion front consumes of blower fan start-stop control be not directly proportional, undoubtedly increases The difficulty of the air mass flow process of blower fan start-stop auto-control burning consumption.The air mass flow and flow into that continuous tunnel furnace blower fan is sent into The air mass flow of coal bed is not directly proportional, and air mass flow and the combustion heat release amount for flowing into coal bed be not directly proportional so that blower fan start-stop pair Hot blast temperature performance of control is poor, unstable unreliable.Baking quality of tobacco is not influenceed up to reduce furnace temperature and rising, changing yellow stage Frequently see that fire turns into one of tobacco flue-curing basic administrative task with fixation stage operative employee.Blower fan is normally opened existing for continuous tunnel furnace operation also rises Not upper furnace temperature problem, it is low to be easily erroneously interpreted as coal-fired calorific value, the most frequently used measure be use instead more high heating value (5500kCal/kg~ 7000kCal/kg) anthracite or bituminous coal, so easily there is localized hyperthermia in burner hearth and hardening crack furnace roof arch brick, increase tobacco flue-curing The problems such as fuel cost, discharge smoke pollution environment.Invention furnace roof 1, bosh 2 and operating walk way shell link into an integrated entity for full weld And seamless metal shell, metal shell thickness 3mm~5mm, to ensure the sealing of hot-blast stove intracavity space, no surrounding air Infilter burner hearth, it is ensured that the Modulatory character of furnace temperature.Continuous tunnel furnace when making furnace sidewall backplate with narrow reinforcing bar prefabricated board alternative metals housing, Easily there are hightemperature cracks in furnace wall, penetrates into the air mass flow inconvenience control of burner hearth, it is out of control or even to 68 DEG C~70 DEG C furnace temperature easily occur Phenomenon.Invention metal shell full weld links into an integrated entity formula structure, the closing of static pressure area, vertical furnace chamber, vertical bank up briquet and from The igniting of coal bed end face center such as is ignited at the design so that and the air mass flow that blower fan is sent into is directly proportional with the air mass flow for flowing into coal bed, It is directly proportional to flow into air mass flow and the combustion heat release amount of coal bed, so as to ensure that good blower fan start-stop to hot blast temperature control Can, baking quality of tobacco is can guarantee that, changing yellow stage is saved and fixation stage operative employee frequently sees that firer makees.

Technical characteristic caused by " open fire reverse combustion " technical characteristic is " high temperature isolation ".As shown in Figure 3, in tunnel furnace door Side is high temperature combustion zone, and it is one that static pressure area and high temperature combustion zone, which overlap, and when blower fan temporarily ceases air-supply, high temperature combustion zone is high Warm furnace gas can reversely blow to blower fan by ventilating opening and blowpipe, acted on plus blower fan by fire door hyperthermia radiation, cause blower fan Shell temperature is increased to 200 DEG C~250 DEG C, fan static pressure decline occurs, and air mass flow diminishes, or even is directly burned out, combustion-supporting Blower fan turns into continuous tunnel furnace replacement frequency highest, consumes most parts.Calculated within 2 months by baking in 1 year, change number of units 1~4 Platform.To reduce blower fan renewal cost, operative employee frequently sees that blower fan turns into one of tobacco flue-curing basic administrative task.Invention is based on naked light Anti- to burn principle, high-temp combustion face is located proximate to the coal bed top area of furnace roof 1, has between high-temp combustion face and static pressure area certain The coal bed of height is separated by, and rises flowing naturally plus high-temperature furnace gas so that the quiet nip space being connected with blower fan is in all the time Low-temperature condition, no high-temperature furnace gas is detained and the appearance of blower fan phenomenon is burnt in refluence, frequently monitors that combustion fan is run without operative employee, solution Blower fan high temperature scaling loss existing for continuous tunnel furnace of having determined and operation insecurity problem.

Inventive technique feature " open fire reverse combustion " is reverse burning furnace energy-conservation, emission reduction, safety, the precondition of autocontrol operation.Invention Technical characteristic " high temperature isolation " is the inevitable outcome of " open fire reverse combustion ".Technical characteristic " it is controllable that furnace temperature is adjustable " is that tobacco flue-curing is guaranteed the quality The key of guarantor's amount, it is the key that invention is able to popularization and application.

Effective resultant effect that said structure feature and technical characteristic are brought is that reverse burning furnace energy-saving environmental protection safety performance obtains Increase substantially.The disposable deashing of comfortably coalingging of invention；Economize on coal, flue gas CO discharges are ultralow, reduce tobacco flue-curing to coal-fired high Calorific value requirement；It can be close to toast curve combustion heat supplying generation hot blast, no furnace temperature is out of control and furnace temperature rises the problems such as not getting on；Without high temperature Furnace gas flows backwards scaling loss combustion fan hidden danger.

Tobacco Processing farage industry, tobacco planting processing base and the tobacco grower cooperative society intensive flue-cured tobacco of combustion using honeycomb briquet brick and Loose-leaf curing combustion heat supplying generation hot air apparatus, hot air chamber and hot-blast stove, can be used invention.

Tobacco flue-curing practice have shown that：Disposable deashing of coalingging, coaling comfortable, deashing is easy；Igniting is ignited simple；Smoke evacuation temperature Degree<80 DEG C, flue gas CO discharges reduce by 75%, and coal-fired calorific value saves more than 25%；Blower fan start-stop is good to hot blast temperature performance of control It is good, baking process curve generation hot blast can be close to, no overtemperature occurs with warm phenomenon is fallen；Leaked without high-temperature furnace gas, blower fan temperature begins It is less than 38 DEG C eventually, no high temperature over-heated fault；Saving of work and time cost declining；Dry tobacco leaf quality better, no endoplasm loss, can use ash content and contain Amount up to 50%, calorific value as little as 3000kCal/kg~4000kCal/kg local cellular briquet.

Claims (3)

1. intensive flue-cured tobacco side's tub reverse burning furnace, including fire bars, furnace roof, bosh and fire door, furnace roof is in cylinder-shaped, furnace roof bottom face side Edge is square, and furnace roof bottom face four is overlapped while with bosh top end face four and full weld connects, and bosh inner chamber is in just cube tubbiness, stove Horizontal fixed grate is highly located in abdomen inner chamber from bottom plate 200mm~350mm, be static pressure area below fire bars, top be coal piling area, coal piling Area neatly stacks the Honeycomb coal briquet in cube shape, briquet and bosh internal face level interval 5mm~10mm, horizontally adjacent two briquet Between gapless, vertical adjacent two briquets hole device to hole forms numerous gas channels in thin bar shape, and coal bed top surface is on bosh top On end face, it is characterised in that：One and the gathering hole that bosh side wall is contour and 0.6m~0.8m is wide are opened up among the side wall of bosh one, The side of gathering hole two is each perpendicular to bosh bottom plate, and bosh inner chamber is connected by gathering hole with inversion and in the operating walk way of square tube shape It is logical, operating walk way left port overlaps with gathering hole and full weld connects, right side in hot air chamber front wall outside wall surface, right output port is by resistance to Fiery thermal-insulating type oven door sealing, fire door are in L-shaped, and fire door includes filling in behaviour in the bottom stretching, extension body of cube shape, bottom stretching, extension physical efficiency Make channel lumen and close static pressure area side wall breach.

2. tub reverse burning furnace in intensive flue-cured tobacco side's as claimed in claim 1, it is characterised in that：Described bosh inner chamber length of side 0.8m~ 1.0m, height 1.2m~1.5m.

3. the application method of tub reverse burning furnace in intensive flue-cured tobacco side's as claimed in claim 1, it is characterised in that：To just it burn first 1~2 block of bituminous coal fill in coal seam end face center, be then switched off and fixed fire door, last temperature controller auto-control combustion fan opened Stop, until tobacco flue-curing in 6~7 days terminates.