CN106108096A - Intensive flue-cured tobacco side's tub reverse burning furnace and using method thereof - Google Patents

Abstract

Intensive flue-cured tobacco side's tub reverse burning furnace, including furnace roof, side's tubbiness bosh, fire bars and L-type fire door, bosh inner chamber length of side 0.8m～1.0m height 1.2m～1.5m, in bosh, fire bars is arranged above coal piling district, lower section is static pressure district, without horizontal clearance, vertical holes to hole between coal piling district Honeycomb coal briquet, bosh sidewall offers contour with a bosh gathering hole, and bosh inner chamber is connected with square tube shape and inverted operating walk way by gathering hole, stretches body and close static pressure district sidewall bottom fire door.The fritter bituminous coal just fired is filled in coal bed end face center, temperature controller regulation and control blower fan start-stop, and whole air even into briquet column-like paths and occur to burn completely with piston stream mode, complete open fire reverse combustion heat supply in 6～7 days.Nicotiana tabacum L. modulation industry flue-cured tobacco generates hot blast and can use invention.Inventing the most comfortable coalingging, CO discharges reduction by 75%, economizes on coal 25%, can be close to toast curve heat supply, does not fall temperature overtemperature and burns blower fan, burning local cellular briquet.

Description

Intensive flue-cured tobacco side's tub reverse burning furnace and using method thereof

Technical field

Invention relates to one and uses cube shape Honeycomb coal briquet, bakes with the intensive of furnace temperature auto-control principle based on anti-burning of flaming Cigarette side's tub reverse burning furnace and using method thereof, it is adaptable to agricultural field, rural area Nicotiana tabacum L. Processing farage industry intensive flue-cured tobacco and scattered leaf dry The roasting hot blast place that produces uses.

Background technology

According to incompletely statistics, tobacco planting base and the tobacco grower cooperative society of 30%～40% uses continuous tunnel furnace generation hot blast to lead to Enter to fill cigarette room.Continuous tunnel furnace uses internal diameter 110mm height 75mm domestic life beehive coal ball, can disposably load 800～1000 honeybees Nest coal briquette, can meet 5～6 days tobacco flue-curing combustion heat supplying needs, substantially can guarantee that tobacco flue-curing tobacco grower in season has a rest, do not affects Second day production efficiency, rural laborer in short supply have certain market potential now.Due to continuous tunnel furnace fault of construction and stove Interior flowing heat transfer combustion process is not enough, 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 of times 1～3 times, furnace temperature regulating is poor, falls temperature and can not be close to toast curve heat supply, and overtemperature furnace temperature is out of control, Burn the problems such as combustion fan.

As shown in Figure 3, continuous tunnel furnace furnace chamber 1.4m length, 0.73m width, 0.9m are high, by 40mm～60mm thickness high-temperature flame-proof The concavo-convex coupling of brick is coated with high temperature clay and surrounds, and burner hearth cavity is in-line, is not provided with fire bars, burner hearth burner hearth be combustor and Dust collection chamber, each external relative one of burner hearth two endsCast iron fire door.When continuous tunnel furnace is coaling, one people passs outside Coal briquette one people is at interior coal briquette of banking up, and (height 1.6m) operative employee contacts to earth and entirely pedals posture regression after crawling into furnace chamber in bent lower limb and bank up coal Ball, comfort level of coalingging is poor.First by coal briquette of banking up inside exhaust opening fire door, coal briquette hole as far as possible to hole, coal briquette layer height of banking up 0.6m, regression is banked up 1.2m length, vacates 0.2m～0.3m space to place kindling.The combustion air part that blower fan blasts flows into The coal seam inter-air space, to combustion front, discharges heat, generates high temperature CO₂Gas, CO₂Gas is moved along contacting coke or briquet quilt It is reduced into CO, reduces combustion heat release further, show furnace temperature and rise the most up, fall temperature (hot blast temperature is less than baking curve) 2 DEG C ～8 DEG C.Fire door surrounds high temperature combustion zone, and fire door temperature is up to 180 DEG C～280 DEG C, is fallen by fire door hyperthermia radiation and high-temperature furnace gas Stream impact, shell temperature raises, and the reduction of blower fan draft capacity is even burned out.For reducing furnace temperature superelevation, falling gentleness and burn out blower fan Impact on dry tobacco leaf quality, changing yellow stage and the supervision of fixation stage operative employee's duty become one of tobacco flue-curing basic administrative task.

Development structure is simple, low cost, and the most comfortable coalingging adapts to stream in rural laborer's form in short supply needs, stove Dynamic heat transfer burning tissues is reasonable, energy-saving and emission-reduction safety and comfort, and the intensive flue-cured tobacco house hot-air stove of saving of labor's cost declining can meet current Build amphitypy society need, promote tobacco business sustainable development.

Summary of the invention

In order to overcome continuous tunnel furnace the most comfortable not coaling, in unreasonable structure and stove, flowing heat transfer combustion process does not conforms to The overtemperature that reason is brought falls temperature and burns blower fan, and dying fire is just burning and the big shortcoming of fire door thermal radiation loss, and invention devises one to be had " high and big vertical furnace chamber, coaling passage and deashing passage unites two into one, high operating walk way, closed static pressure district and high L The light-duty fire door of font " architectural feature, " open fire reverse combustion, furnace temperature auto-control, high temperature are isolated " technical characteristic, " disposably coaling clear Ash；Coalingging, it is comfortable to unload ash；Economizing on coal, the low CO of flue gas discharges；It is controlled 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. intensive flue-cured tobacco side's tub reverse burning furnace of beneficial effect and using method thereof.

Intensive flue-cured tobacco side's tub reverse burning furnace, mainly includes furnace roof, bosh, fire bars and fire door, and furnace roof is cylinder-shaped, at the bottom of furnace roof End face edge is square, and furnace roof bottom face four limit and bosh top end face four limit overlap and full weld connects, and bosh inner chamber is in just cube Tubbiness, length of side 0.8m～1.0m, highly 1.2m～1.5m, bosh inner chamber highly locates horizontal stationary furnace from base plate 200mm～350mm Bar, is static pressure district below fire bars, is arranged above coal piling district, and coal piling district neatly stacks the Honeycomb coal briquet in cube shape, briquet and bosh Internal face level interval 5mm～10mm, gapless between adjacent two briquets of level, the most adjacent two briquet holes to hole with formed in Numerous gas channels of thin bar shape, coal bed end face, on bosh top end face, offers one and bosh side in the middle of bosh one sidewall The gathering hole that wall is contour and 0.6m～0.8m is wide, gathering hole dual-side is perpendicular to bosh base plate, bosh inner chamber by gathering hole and Being inverted and operating walk way in square tube shape is connected, operating walk way end face and bosh top end face are coplanar, operating walk way left port and Gathering hole overlaps and full weld connects, 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 that body is stretched in the bottom in cube shape, and bottom is stretched physical ability and filled in operating walk way inner chamber and close static pressure District's sidewall breach.

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

Nicotiana tabacum L. 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 air stove, can use invention.

Invention operation is more comfortable, and energy conservation and environmental protection benefit is notable, and security performance improves.Invent deashing of disposably coalingging, coaling Comfortable, igniting is ignited simple, and deashing is easy；Flue gas CO discharges reduction by 75%, saves coal-fired 25%；Combustion fan start-stop is to hot blast Temperature adjusting is functional, can be close to baking process curve and generate hot blast, falls temperature problem without overtemperature；Blower fan temperature is consistently lower than 38 DEG C, without high temperature burning problems；Use the cube smokeless briquet of shape honeycomb.

Accompanying drawing explanation

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 is bosh, and 3 is fire bars, and 4 is 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.

Detailed description of the invention

Below in conjunction with the accompanying drawings invention is further described.

As shown in accompanying drawing 1～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.

Furnace roof 1 is in cylinder-shaped, and furnace roof 1 bottom face edge is square, furnace roof 1 bottom face four limit and bosh 2 top end face four limit Overlapping and full weld connects, furnace roof 1 top end face center hole is from kiln gas outlet.

Bosh 2 inner chamber is in just cube tubbiness, length of side 0.8m～1.0m, highly 1.2m～1.5m.Bosh 2 inner chamber horizontal cross-section Shape can be rectangle, it is also possible to have a rectangular shape.Bosh 2 cavity heights 1.2m～1.5m is high at existing hot air chamber crown wall Under 2.5m limits, the maximum height that can utilize after spatial altitude shared by deduction mixing chamber and heat exchange single tube, consider fill to the greatest extent simultaneously The balance result of possible many Honeycomb coal briquets.Bosh 2 inner chamber length of side 0.8m～1.0m, one considers hot air chamber and may utilize space width Spending 1.4m, the two considers operative employee in bosh 2 inner chamber activity freely, can comfortable coaling, and big for fixed bed cross section is led by three The negative effects such as temperature field inhomogeneous broadening effect, wall effect and the funneling effect caused are reduced to minimum level.Bosh 2 inner chamber is the end of from Plate 200mm～350mm highly locates horizontal fixed grate 3.Bosh 2 cavity region above fire bars 3 be coal piling district, lower section be static pressure District.Coal piling district neatly stacks the Honeycomb coal briquet 5 in cube shape, briquet 5 and bosh 2 internal face level interval 5mm～10mm, level Without obvious gap between adjacent two briquets, the most adjacent two briquet holes form the numerous gas channels in thin bar shape, coal to hole Bed end face is on bosh 2 top end face.Honeycomb coal briquet 5 is uniformly distributed numerous rounded or square vertical gas channel.In bosh 2 Chamber is cube shape, and Honeycomb coal briquet 5 is (can not be in short cylindric) in short cube shape, is prone to gapless between adjacent two briquets of level, Obvious gap is there is between coal briquette and coal briquette, it is difficult to avoid air flow shortcircuit phenomenon to occur not as beehive coal ball.Static pressure district Double as collecting gray area.Major part lime-ash shovels out above fire bars 3, and the grey quantity of slag leaking through fire bars 3 is little, collects gray area height 200mm～350mm The leakage ash of lower fire bars 3 can be contained, and can shovel out smoothly with spades.Collection gray area limitation in height, at 200mm～350mm, can increase heap Coal district height, thus increase disposable coal capacity.Fire bars 3 material is cast iron materials, and under hot environment, long-time use is indeformable. Above fire bars 3, bosh 2 inwall sticks 300mm～500mm height, 30mm～50mm thickness fire brick layer.Above fire bars 3 300mm～ Bosh 2 inwall within 500mm suffers spades mechanical impact probability big, sticks thickness 30mm～60mm refractory brick to extend burning Heating plant service life.

Offer in the middle of bosh 2 one sidewall that a gathering hole, gathering hole height and bosh 2 Sidewall Height be equal, width is 0.6m～0.8m, gathering hole dual-side is perpendicular to bosh 2 base plate.Gathering hole top margin and base are horizontal line section, dual-side is Vertically line segment.Bosh 2 inner chamber is connected by the gathering hole operating walk way with inversion and in square tube shape.Operating walk way left side is pushed up Limit and base are horizontal line section, dual-side is vertical line segment.Operating walk way right side is in hot air chamber front wall outside wall surface, and behaviour Make passage end face, bottom surface, two sides the most vertical.Operating walk way left port and gathering hole overlap and full weld connects, i.e. operating walk way Left side top margin and gathering hole top margin overlap and full weld connects, base, operating walk way left side and gathering hole base coincident and full weld Connecting, operating walk way left side dual-side and gathering hole dual-side overlap and full weld connects.

Bosh 2 gathering hole and operating walk way use when coalingging deashing.Fire door 4 in L-shaped, heatproof 900 DEG C～1100 DEG C, Width and gathering hole width is equal, height and gathering hole height equal.Fire door 4 includes stretching bottom cube shape body, and bottom is stretched Body left side and fire bars less than 3 gathering hole or the seamless connection of sidewall breach of static pressure district, can fill in operating walk way inner chamber complete Totally-enclosed static pressure district sidewall breach so that static pressure district does not connects with operating walk way inner chamber.It is to form static pressure that body effect is stretched in bottom District, it is ensured that static pressure district 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, flows into exhaust opening without air by-pass, and whole air are with piston stream mode Uniform Flow to coal bed top combustion face, and air is effective Utilization rate reaches 100%.Operating walk way right output port is sealed by fire door 4.

Invention uses in being placed in intensive flue-cured tobacco hot air chamber.Operating walk way right side and hot air chamber positive front wall outside wall surface are coplanar. When operating walk way right output port is by fire door 4, fire door 4 metal coverboard is close to hot air chamber positive front wall outside wall surface, does not enter in operating walk way, To facilitate fire door 4 normally fill in and extract, the most normally-open and shutoff operation passage right output port.Gathering hole width, operating walk way Width and fire door 4 width are equal, for 0.6m～0.8m.Bosh 2 cavity heights, gathering hole height, operating walk way height and fire door 4 The most equal, for 1.2m～1.5m.Gathering hole width 0.6m～0.8m, does not the most hinder operative employee to enter bosh 2 coal piling district dress Briquet, and more heat can be stoped to be radiated operating walk way and fire door 4, and then maintain bosh 2 inner chamber combustion high temperature.

Furnace roof 1, bosh 2 and operating walk way shell are that full weld links into an integrated entity and seamless metal shell, metal shell Thick 3mm～5mm, to guarantee the sealing of invention intracavity space, and then guarantees furnace temperature Modulatory character.On furnace roof 1 inwall, bosh 2 Half inwall and the operating walk way inwall in addition to base plate sticks the integral type refractory casting layer that 30mm～50mm is thick.Bosh 2 base plate and Operating walk way base plate is patch ground flat board, there is spades and moves back and forth patch thing problem, additionally static pressure district temperature in frictional force damage base plate Spending low, without high temperature scaling loss potential problem, therefore static pressure district inwall and operating walk way plate inner wall the most do not stick refractory brick or fire-resistant water Note layer.Metal shell inwall sticks 30mm～50mm thickness castable refractory or refractory brick, both can limit flame retardant coating and dissipate furnace wall The inhibition of heat, can avoid again thermal-flame direct contacting metal housing high temperature corrosion to occur, to extend metal shell Service life.

Invention inner chamber includes furnace roof 1 inner chamber, bosh 2 inner chamber and operating walk way inner chamber.Bosh 2 inner chamber is divided into coal piling district and quiet Nip two parts, static pressure district sidewall offers vent, in order to the combustion air driven by blower fan enters.Furnace roof 1 inner chamber top end face Center hole is exhaust opening, and exchanger heat gas approach is tightly connected.Furnace roof 1 inner chamber bottom face and bosh 2 inner chamber top end face Overlapping, bosh 2 inner chamber is by 0.6m～the 0.8m width gathering hole offered on bosh 2 sidewall and operating walk way intracavity inter-connection, behaviour Make channel lumen right output port to be sealed by fire door 4.

Invention process and assemble order is: roll bending cold working goes out furnace roof 1, bosh 2, operating walk way and 4 four parts of fire door Metal shell；Gathering hole is processed at bosh 2 one side wall surface；Process fire bars 3, then at bosh 2 inner chamber fixed grate 3.At stove Push up uniform welding V-shaped peg on 1 internal face, bosh 2 middle and upper part internal face and operating walk way internal face, the deep 20mm of peg ～30mm；Uniformly cast in peg region aluminum phosphate refractory material；Use a small amount of firewood, 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 bosh 2 middle and lower part Wall patch abdomen refractory brick.Furnace roof 1 bottom face edge and bosh 2 top end face four limit overlap and full weld connects, bosh 2 gathering hole and operation Passage left port full weld connects.

When using intensive flue-cured tobacco side's tub reverse burning furnace, first empty lime-ash above fire bars 3, then empty lime-ash below fire bars 3.Behaviour Workmanship in partly pedaling or posture of bending over enters on bosh 2 inner chamber fire bars 3 from operating walk way, Honeycomb coal briquet 5 pass from stove into.Honeycomb Briquet 5 is rule cube.When bosh 2 inner chamber is stacked briquet 5, make every effort to neatly stack, between briquet 5 and bosh 2 internal face level Away from 5mm～10mm, without obvious gap between adjacent two briquets of level, the most adjacent two briquet holes are to hole, in order to formed in buttress shaft Numerous gas channels of body shape.When coal bed end face is on bosh 2 top end face, intensive flue-cured tobacco 6～7 days baking continuous burnings can be met Heat supply needs.Operating walk way inner chamber beyond bosh 2 inner chamber is not banked up briquet 5, it is to avoid big fire combustion, to operating walk way, strengthens stove The hyperthermia radiation corrosion of door 4 and heat loss.Heap to top space-time goes out gathering hole edge 1～2 briquets, by burning 1～2 Block bituminous coal fills in top end face center from top vacancy.After operative employee exits operating walk way, fire door 4 is filled in operation logical Road right output port, seal operation passage right output port is also fixed fire door 4.Temperature controller humiture time parameter is set and makes it start Run, start and static pressure district UNICOM and the blower fan that controlled by temperature controller, air is sent into static pressure district by blower fan, and whole air are at coal Uniformly flowing up in piston flow shape in numerous buttress shaft shape gas channel in Ceng, combustion front moves to from bosh 2 top lentamente Fire bars 3 end face, long-time naked light backfire stable heating, baking process curve can be close to and be upwards warming up to 68 DEG C, 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, opens wide, without fire door 4, the hyperthermia radiation heat loss existed and short time furnace temperature reduces problem.

Loading Nicotiana tabacum L. total amount and moisture according to tobacco flue-curing house, the coal briquette having roughly estimated baking required by task is total Amount.When briquet 5 total amount is less than the bosh 2 total useful load of coal piling Qu, briquet 5 is the most all filled by operating walk way and gathering hole Entering bosh 2 coal piling district, coal bed end face is plane.1～2 block of bituminous coal, the then bituminous coal being just burning is filled at coal bed end face center The smokeless briquet of surrounding of slowly igniting.Bituminous coal dust content is low, and after combustion, lime-ash is few, and coal bed gas channel blocking probability is low, energy Air is kept to be upward through fire bars 3 Zi collection gray area unimpeded to the flowing of combustion zone.Bituminous coal calorific value is high, volatile matter is many, ignition temperature Height, can light the selected anthracite of high ignition point (anthracite as selected in Korea) steadily, improves igniting and ignites success rate.Use When content of ashes is up to the local cellular briquet 5 of 50%, the anchracite ball igniting that 1～2 fritters are just being burning can be used instead and ignite.

When using invention, dress cigarette room is constant, and hot air 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 air stove and heat exchanger.

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

Invention has " high and big vertical furnace chamber " architectural feature.Invention furnace chamber is tall and big, furnace chamber volume big, and burner hearth holds Long-pending effective rate of utilization is high, then can load more fire coal, it is achieved disposably coaling, alleviate operative employee's labor intensity.Such as accompanying drawing 3 institute Showing, continuous tunnel furnace burner hearth long 1.4m, 0.73m width, 0.9m are high, and coal bed height only has 600mm, and coal bed has unavoidable not Uniform gap, combustion space effective rate of utilization less than 80%, local life beehive coal ball 800 can only be loaded～1000 (single Coal briquette height 75mm), needs of disposably coalingging can be met in theory.Owing to body of heater accumulation of heat is many, fire door radiant heat loss is big, flue gas CO discharge is many, and the thermal efficiency is low, and coal consumption is big, and 800～1000 coal briquettes tend not to meet baking needs, it is simply that in fine day one room Portion leaf toasts 5～6 days, and coal 1～3 times more than are also wanted in centre, it is difficult to realization is disposably coaling target, not to mention the rainy day and on During portion's leaf baking, midway needs to add coal briquette number of times.Invention bosh 2 cavity heights 1.2m～1.5m, length of side 0.8m～1.0m, honeybee Between nest briquet 5, gapless, briquet 5 and bosh 2 internal face gap are little to 5mm～10mm, and combustion space effective rate of utilization reaches 100%, coal bed up to bosh 2 top end face, disposable coal capacity and continuous tunnel furnace are suitable, and the invention thermal efficiency exceeds continuous tunnel furnace 25%, natural energy of disposably coalingging keeps the longer combustion heat supplying time.Barn dress cigarette slightly above 2.5 tons, the rainy day pluck and Use invention under the conditions of upper tobacco leaf, need not midway deashing coal, 6～7 days baking combustion heat supplyings of accomplishing disposably to have coaling Task.

Invention has that " vertical heater inner chamber, high furnace chamber, coaling passage and deashing passage unites two into one, and operating walk way is high Degree height, high fire door 4 " etc. architectural feature.As shown in Figure 3, continuous tunnel furnace coal piling district, collect gray area, channel lumen of coalingging, deashing lead to The unification of road inner chamber, without fire bars, fire door only has 560mm height, and operative employee can only contact to earth entrance furnace chamber of creeping, and the most entirely pedals regression heap Putting coal briquette, furthermore width is little, space is little, the shortest, air flows smooth, and occur to a certain degree feeling oppressed sense, and operation of coalingging is not relaxed Suitable, it is difficult to meet hole to hole, with seamless requirement between adjacent two coal briquettes of row of horizontal.Invention vertical type burner hearth, coal piling district is at collection On gray area, eliminate the public wallboard between passage and the deashing passage leading to collection gray area of coalingging towards coal piling district, coaling logical Road and deashing passage are merged into operating walk way, operating walk way cavity heights and fire door 4 height up to 1.2m～1.5m, and operative employee can With in slightly pedaling or slightly bend over posture turnover furnace chamber, in adding stove, thorax is tall and big, and air flowing is smooth and easy, does not haves sense of feeling oppressed, behaviour Workmanship goes slick in furnace chamber, it is achieved comfortable coaling, and the coal piling such as hole and briquet gapless are required easily to meet by hole.

Invention has " L-shaped fire door 4 " architectural feature.Invention fire door 4 is for seal operation passage right output port, outside preventing Boundary's air penetration is to operating walk way and bosh 2 inner chamber, and bottom fire door 4, stretching, extension body left side is together with bosh 2 sidewall, surrounds closing Static pressure district, cuts off static pressure district air by-pass and flow to operating walk way inner chamber and the passage of bosh 2 inner chamber.Fire door 4 meets sealing simultaneously Operating walk way right output port and closing static pressure district, it is provided that the essential condition of furnace temperature auto-control.

Invention has " closed static pressure district " architectural feature.Continuous tunnel furnace static pressure district is unenclosed construction.As shown in Figure 3, Vacate the region that 2～3 floor coal briquette vacate when continuous tunnel furnace coal piling is to entrance point fire door and be static pressure district, owing to burner hearth coal piling is to arriving 0.6m is high, and between furnace roof internal face to coal bed end face, the height space of about 130mm has become air by-pass and rapidly flowed to exhaust opening Passage, i.e. static pressure district end face is unlimited.Bosh 2 inner chamber of invention fire bars less than 3 is static pressure district.Owing to stretching bottom fire door 4 Exhibition edge, body left side and the seamless connection in fire bars less than 3 gathering hole edge, the closing of static pressure district sidewall, in static pressure district, blower fan blasts Air all the most uniformly flow to the numerous thin bar shape gas channel of coal bed 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 coalings, and meets nowadays countryside labour market Need.Architectural feature " high and big vertical furnace chamber, the passage and deashing passage unites two into one, operating walk way height is high, high of coalingging Fire door 4 " can guarantee that deashing operation of coalingging is comfortable, people-oriented to accomplish tobacco flue-curing.Architectural feature " vertical furnace chamber, short fire door 4, closed static pressure district " it is the precondition of " in stove, flowing heat transfer combustion process is scientific and reasonable ".

" vertical type furnace chamber, static pressure district close " architectural feature and " leading from coal bed end face center fire ignition in hydriding operational approach The technical characteristic caused is " open fire reverse combustion ".Continuous tunnel furnace dying fire is just burning heat supply.As shown in Figure 3, continuous tunnel furnace is lighted a fire from coal bed downstream Igniting, blower fan drives air to flow to direction, coal bed oblique upper, and burning is moved towards direction, coal bed oblique upper, meets dying fire and just burns Principle, is in the coal bed of combustion front oblique upper by high-temperature baking, and in coal bed, carbonization gas, volatile matter are together with high temperature CO₂Gas connects Tactile high-temperature coke is reduced the CO gas of generation together, flows out coal bed to direction, coal bed oblique upper, finally dissipates through exhaust opening Lose, the thermal efficiency as little as about 50%.What is more important, the CO air-flow of discharge has interior heat energy, and combustion heat release amount reduces, burning Thermal discharge does not reaches maximum, and content of CO in smoke instability directly results in combustion heat release amount and participates in the air mass flow of combustion reaction not It is directly proportional, increases by the difficulty of air mass flow auto-control furnace temperature process.The air that invention is driven by blower fan enters static pressure district, Static pressure district sidewall and base plate No leakage, it is bottom-up uniformly across coal bed that combustion air completely extends across fire bars 3.All air is with work Plug flow fashion flows uniformly through coal bed, starts igniting from coal bed end face center and ignites, and combustion front the most slowly moves, combustion front Moving direction and air-flow direction are contrary, it is achieved open fire reverse combustion heat supply.When combustion front moves down, constantly preheating contacts Bottom coal briquette and air, the carbonization gas formed during briquet preheating enters combustion front and complete combustion reaction occurs, leaves combustion front High temperature CO₂Do not have high-temperature coke to contact when gas flows up, i.e. life does not becomes reducibility gas CO, and so discharge fume CO₂Gas Body burden is high, CO gas content is extremely low.So, it is achieved that combustion heat supplying process energy conservation, low stain thing discharge, what is more important 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, for adjusting by 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 just burning principle person based on dying fire in the majority, is applied to Anthracite Honeycomb coal briquet burner based on open fire reverse combustion principle and method report are the most rare.

The technical characteristic that " vertical furnace chamber inner chamber, closed static pressure district " architectural feature and " open fire reverse combustion " technical characteristic cause It is " it is controlled that furnace temperature is adjustable ".How many Combustion of Hot Air Furnace heat releases is proportional to participate in the air mass flow size of combustion reaction.Operating walk way The air that inner chamber is detained can bypass and 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 district closes, and whole air uniformly flow up in piston flow shape in coal bed, without air through stove The gathering hole of bar less than 3 bypasses to operating walk way region.Although coal piling district coal bed is directly contacted by the gathering hole of fire bars more than 3 Operating walk way inner chamber, but air is when coal bed is walked, and coal bed gas channel and exhaust opening negative pressure are formed and are drawn up power, static pressure district Static pressure is formed and flows up driving force and air flows upwards that high-temperature flue gas density is formed in upwards buoyancy lift makes coal bed, water Square to flow out coal bed negligible to the air capacity in operating walk way region.Final all air pass coal bed with piston stream mode, All catalytic combustion faces burn and discharge net quantity of heat, air utilization ratio reaches 100%, the air mass flow that i.e. blower fan blasts with Combustion front burns, and the air mass flow consumed is equal to be directly proportional.Tight between briquet and briquet, natural without combustion-supporting short-circuit of air Impact, it is ensured that the blower fan start-stop performance of control to furnace temperature.Obviously, the air performance of control to combustion heat release, depends on static pressure district Closure and operating walk way inner chamber air trapping amount, operating walk way inner chamber air trapping amount depends on that operating walk way right output port seals Property.Coal bed end face is on bosh 2 top end face, and coal briquette hole can fully seal operating walk way to gapless between hole and briquet, fire door 4 Right output port, is conducive to the air regulation process maintaining blower fan start-stop to participating in combustion reaction.As shown in Figure 3, continuous tunnel furnace Static pressure district does not closes near entrance point fire door, static pressure district end face, and aerator blasts most of air by-pass in static pressure district to coal bed Gas-phase space on end face also rapidly flows toward exhaust opening (discharge fume oxygen-containing up to 11%～12%), and 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 bigger resistance, and lime-ash ball stops Combustion air flow to combustion front, stops that heat smoke floating flow to top gas phase space, and unburned coal briquette stops heat smoke flow forward, The final air mass flow participating in burning is few, and combustion heat release is few, and content of CO in smoke quantity of heat storage high, interior is many, reduces burning further and puts Heat, general performance come out of the stove temperature rise the most up, hot blast temperature be less than preset temperature 2 DEG C～8 DEG C.The simply sky that stove chamber inner combustion consumes Sub-fraction in gas, the air mass flow that blower fan start-stop controls is not directly proportional to the air mass flow of combustion front consumption, strengthens undoubtedly The difficulty of the air mass flow process that the burning of blower fan start-stop auto-control consumes.Continuous tunnel furnace blower fan send into air mass flow and flow to The air mass flow of coal bed is not directly proportional, and the air mass flow and the combustion heat release amount that flow to coal bed are not directly proportional so that blower fan start-stop pair Hot blast temperature performance of control is poor, unstable unreliable.Rise up on baking quality of tobacco impact, changing yellow stage for reducing furnace temperature See that pyrogene is one of tobacco flue-curing basic administrative task with fixation stage operative employee's duty.The blower fan of continuous tunnel furnace operation existence is normally opened also to be risen Do not go up furnace temperature problem, be easily erroneously interpreted as coal-fired calorific value low, the most frequently used measure be use instead more high heating value (5500kCal/kg～ 7000kCal/kg) anthracite or bituminous coal, the most easily occurs that furnace roof arch brick is hardening cracked in localized hyperthermia in burner hearth, strengthens tobacco flue-curing The problems such as fuel cost, discharge smoke pollution environment.Invention furnace roof 1, bosh 2 and operating walk way shell are that full weld links into an integrated entity And seamless metal shell, metal shell thickness 3mm～5mm, to guarantee the sealing of air stove intracavity space, without 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 steel bar preassembling making sheet alternative metals housing, Easily there is hightemperature cracks in furnace wall, and the air mass flow inconvenience penetrating into burner hearth controls, and easily occurs that furnace temperature is out of control even to 68 DEG C～70 DEG C Phenomenon.Invention metal shell full weld links into an integrated entity formula structure, the closing of static pressure district, vertical furnace chamber, vertical bank up briquet and from Coal bed end face center fire such as is ignited at the design so that air mass flow that blower fan is sent into and flow to the air mass flow of coal bed and be directly proportional, The air mass flow and the combustion heat release amount that flow to coal bed are directly proportional, thus ensure that good blower fan start-stop is to hot blast temperature control Can, can guarantee that baking quality of tobacco, save changing yellow stage and fixation stage operative employee's duty sees that firer makees.

The technical characteristic that " open fire reverse combustion " technical characteristic causes is " high temperature isolation ".As shown in Figure 3, in continuous tunnel furnace fire door Side is high temperature combustion zone, static pressure district and high temperature combustion zone and overlaps is one, and when blower fan temporarily ceases air-supply, high temperature combustion zone is high Temperature furnace gas can pass through vent and Ramulus Et folium Spiraeae Acuminatae reversely blow to blower fan, adds fan by fire door hyperthermia radiation effect, causes blower fan Shell temperature is increased to 200 DEG C～250 DEG C, occurs that fan static pressure declines, and air mass flow diminishes, and is the most directly burned out, combustion-supporting Blower fan becomes that continuous tunnel furnace replacement frequency is the highest, consume most parts.Within 2 months, calculate by baking in a year, change number of units 1～4 Platform.For reducing blower fan renewal cost, operative employee's duty sees that blower fan becomes one of tobacco flue-curing basic administrative task.Invention is based on naked light Anti-principle of burning, high-temp combustion face is located proximate to the coal bed top area of furnace roof 1, has certain between high-temp combustion face and static pressure district The coal bed of height is separated by, and adds that high-temperature furnace gas rises flowing naturally so that the quiet nip space being connected with blower fan is in all the time Low temperature state, is detained without high-temperature furnace gas and refluence is burnt blower fan phenomenon and occurred, monitors that combustion fan runs without operative employee's duty, solves The blower fan high temperature scaling loss of continuous tunnel furnace of having determined existence and operation insecurity problem.

Inventive technique feature " open fire reverse combustion " is that reverse burning furnace is energy-conservation, reduction of discharging, 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 controlled that furnace temperature is adjustable " is that tobacco flue-curing is guaranteed the quality The key of guarantor's amount, is the key invented and be able to popularization and application.

Effective resultant effect that said structure feature and technical characteristic bring is that reverse burning furnace energy-saving environmental protection safety performance obtains Increase substantially.Invent the most comfortable deashing of coalingging；Economizing on coal, flue gas CO discharge is ultralow, reduces tobacco flue-curing to coal-fired high Calorific value requirement；Can be close to toast curve combustion heat supplying and generate hot blast, and furnace temperature out of control without furnace temperature rises problems such as not getting on；Without high temperature Furnace gas refluence scaling loss combustion fan hidden danger.

Nicotiana tabacum L. 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 generates hot air apparatus, hot air chamber and air stove, can use invention.

Tobacco flue-curing practice have shown that: deashing of disposably coalingging, and coalings comfortable, and deashing is easy；Igniting is ignited simple；Smoke evacuation temperature < 80 DEG C, flue gas CO discharges reduction by 75% to degree, and coal-fired calorific value saves more than 25%；Blower fan start-stop is good to hot blast temperature performance of control Good, baking process curve can be close to and generate hot blast, occur with falling temperature phenomenon without overtemperature；Leaking without high-temperature furnace gas, blower fan temperature begins Eventually less than 38 DEG C, without high temperature over-heated fault；Saving of work and time cost declining；Dry tobacco leaf quality better, is lost without endoplasm, can use ash and contain Amount up to 50%, the local cellular briquet of calorific value as little as 3000kCal/kg～4000kCal/kg.

Claims (3)

1. intensive flue-cured tobacco side's tub reverse burning furnace, including fire bars, it is characterised in that: also including furnace roof, bosh and fire door, furnace roof is cylinder Body shape, furnace roof bottom face edge is square, and furnace roof bottom face four limit and bosh top end face four limit overlap and full weld connects, in bosh Chamber highly locates horizontal fixed grate in just cube tubbiness, bosh inner chamber from base plate 200mm～350mm, below fire bars be static pressure district, Being arranged above coal piling district, coal piling district neatly stacks the Honeycomb coal briquet in cube shape, briquet and bosh internal face level interval 5mm～ 10mm, gapless between adjacent two briquets of level, the most adjacent two briquet holes form the numerous air-flows in thin bar shape to hole and lead to Road, coal bed end face, on bosh top end face, is offered one and bosh sidewall is contour and 0.6m～0.8m width in the middle of bosh one sidewall Gathering hole, gathering hole dual-side is each perpendicular to bosh base plate, and bosh inner chamber is by gathering hole and inversion and the behaviour in square tube shape Be connected as passage, operating walk way left port and gathering hole overlap and full weld connects, right side in hot air chamber front wall outside wall surface, Right output port is L-shaped by fire resistant heat preserving type oven door sealing, fire door, and fire door includes that body is stretched in the bottom in cube shape, and bottom is stretched Physical ability is filled in operating walk way inner chamber and closes static pressure district sidewall breach.

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

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