CN108253624A - Scattered coal is counter to heat wind furnace - Google Patents

Abstract

Scattered coal is counter to heat wind furnace, including furnace top cover, bosh, fire bars, deashing channel, rebasing moulded coal layer, dissipate coal bed and igniting coal cinder, furnace top cover side wall coal feed point is connected with channel outlet full weld of coalingging, bosh inner cavity and deashing channel lumen are connected into static pressure area, deashing channel lumen top surface is higher by fire bars top surface 75mm~85mm, channel center's axis angle with horizontal plane of coalingging is 30 °~60 °, coaling channel internal diameter 80mm~100mm, it coalings channel center's axis extended line and bosh central axis intersects at scattered coal bed end face center, rebasing moulded coal layer and scattered coal bed are banked up above fire bars, igniting coal cinder naturally falls in scattered coal bed end face center.Tobacco modulates dense drying and loose-leaf curing heat supply occasion and the present invention can be used.Deashing of the invention of disposably coalingging, coalings comfortable, and igniting is ignited simply, and deashing is easy；Fire coal 25% is saved in CO emission reductions 75%, can be close to baking process curve generation hot wind, combustion fan is without burning problems.

Description

Scattered coal is counter to heat wind furnace

Technical field

The present invention relates to one kind to use blocky or granular scattered coal, disposably coalings, combustion front moving direction and combustion air The opposite scattered coal in flow direction is counter to heat wind furnace, is generated suitable for agriculture rural area field tobacco business tobacco leaf modulating process coal combustion Hot wind place uses.

Background technology

According to measuring and calculating, about 21,000,000 mu of National Tobacco Leaves cultivated area in 2012 estimates that the whole nation has close by 15~20 mus/ Collect tobacco flue-curing house about 1,200,000.By taking bulk curing barn fills 2.5 tons of the tobacco leaf in middle part as an example, combustion heat supplying continues 5~6 days around time.Cigarette The situation is tense for grass modulation industry energy-saving emission reduction, it is desirable that the automatic control of intensive flue-cured tobacco hot-blast stove furnace temperature is good, saving of labor safely, deashing of coalingging Comfortably, fuel is saved.

China's hot blast stove for flue-cured tobacco uses blocky or granular scattered coal based on traditional vertical Loose-coal stove, coal-fired without pretreatment. Loose-coal stove inner cavity is wrapped up by integrated metal housing, is easy to overnight and changing yellow stage Control for Kiln Temperature of banking up a fire.Loose-coal stove combustion space is small, Scattered coal is deposited on fire bars, forward combustion heat supply, and operation requirement of economizing on coal " spares no effort to coal, bog-head coal bed and diligent scarfing cinder ", a baking week Phase needs coal up to 20 times, and the particularly fixation scapus phase reaches 2~4 hours once, and curing barn cluster sets up 2~3 technician's break tours Carry out 2~4 hours/time cycle coal.The frequent coal deashing of Loose-coal stove seriously affects tobacco grower's night's rest and second innately Production, furthermore fire door open wide often, the time it is long, fire door hyperthermia radiation heat loss is big, and furnace temperature fluctuation amplitude is big, in addition dying fire is just burnt It is big to discharge flue gas CO concentration, the thermal efficiency is down to 45%.At present, each cigarette district recruitment is difficult, of high cost, and traditional Loose-coal stove can not meet cigarette Careless modulating process energy-saving and emission-reduction need.

Exploitation is disposably coaling, and combustion heat supplying performance of control is good, the novel scattered coal of dense tobacco flue-curing house of energy-saving and emission-reduction safety Hot-blast stove can promote China's tobacco business sustainable development.

The content of present invention

In order to which Loose-coal stove dying fire is overcome just to burn, fire door opens wide that radiation heat loss is big, and the thermal efficiency is low, furnace temperature regulating poor performance, The problems such as needing to spare no effort to coal deashing, the present invention devise a kind of with " coal channel center's axis extended line and the bosh of coalingging Central axis intersects at scattered coal bed end face center, fire bars plane below deashing channel lumen top surface " structure feature, it is " disposable Coaling, open fire reverse combustion " technical characteristic, " coal-fired without pretreatment, stove is disposably coaling outside；It economizes on coal, low CO discharges；It is bent to be close to baking Line heat supply；Do not burn combustion fan " and other effects scattered coal counter heat wind furnace.

Scattered coal is counter to heat wind furnace, mainly including furnace top cover, bosh, fire bars, deashing channel, rebasing moulded coal layer, dissipate coal bed and It lights a fire coal cinder, furnace top cover is included in upright round platform cylindrical sidewall, and furnace top cover side wall opens up coal feed point, coal feed point edge and in cylinder Shape is coaling the connection of channel outlet edge full weld, and channel entrance of coalingging pushes up oven door sealing, furnace top cover bottom face circumference and bosh top End face circumference full weld connection, bosh inner cavity is in upright barrel-shaped, apart from bosh inner chamber bottom surface 200mm~250mm height level's cloth Fire bars is put, bosh sidewall bottom opens up combustion air inlet, and combustion air inlet edge and deashing channel outlet edge full weld connect It connects, deashing channel center axis is horizontal line, and deashing channel center axis extended line and bosh central axis upright intersect, deashing The rectangular shape of channel vertical section, deashing channel lumen are connected with the following bosh inner cavity of fire bars as static pressure area, deashing channel into Mouth bottom oven door sealing, the centrally disposed combustion air of bottom fire door are passed through mouth, deashing channel entrance end face and channel entrance end of coalingging All in hot air chamber front wall outside wall surface, deashing channel lumen top surface is higher by fire bars top surface 75mm~85mm, channel center of coalingging in face Axis angle with horizontal plane be 30 °~60 °, coaling channel internal diameter 80mm~100mm, coaling channel center's axis extended line and Bosh central axis intersects at scattered coal bed end face center, and rebasing moulded coal layer is banked up above fire bars, is banked up above rebasing moulded coal layer scattered Coal bed, across channel ignition coal block of coalingging naturally fall in scattered coal bed end face center ignite coal combustion reaction.

When heating wind furnace using scattered coal is counter, rebasing moulded coal layer is filled in, and cloth from fire bars top surface and deashing channel top surface notch Full fire bars top surface dissipates coal and enters from channel entrance of coalingging, drops down onto rebasing moulded coal layer superjacent air space and ultimately form scattered coal bed, dissipate coal bed Top surface and channel center's axis and bosh central axis intersection point distance of coalingging are no more than 20mm, and igniting coal cinder is from channel entrance of coalingging Input, coaling channel center's axis and bosh central axis near intersections region are dropped down onto by means of its own gravity naturally.

The agriculture each cigarette district tobacco in rural urbanization field modulates dense drying and the present invention can be used in loose-leaf curing heat supply occasion.

Present invention operation is more comfortable, and energy conservation and environmental protection benefit is notable, and security performance is high.Deashing of the invention of disposably coalingging, point The fire deashing that ignites is easy to operate；It is compared with conventional tunnel stove, flue gas CO discharges of the present invention reduce by 75%, save fire coal 25%；Energy It is close to baking process curve generation hot wind；Combustion fan temperature is consistently lower than 38 DEG C, no high temperature burning problems.

Description of the drawings

Fig. 1, Fig. 2 are respectively to dissipate that coal is counter heats wind furnace left view, vertical view.In Fig. 1~Fig. 2,1 is furnace top cover, and 11 be dress Coal channel, 111 be top fire door, and 2 be bosh, and 3 be fire bars, and 4 be deashing channel, and 41 be bottom fire door, and 5 be rebasing moulded coal layer, and 6 be scattered Coal bed, 7 be igniting coal cinder.

Specific embodiment

The present invention is further illustrated below in conjunction with the accompanying drawings.

As shown in 1~attached drawing of attached drawing 2, dissipate that coal is counter heats wind furnace, including furnace top cover 1, bosh 2, fire bars 3, deashing channel 4, Rebasing moulded coal layer 5 dissipates coal bed 6 and igniting coal cinder 7.Furnace top cover 1 is included in upright round platform cylindrical sidewall, and 1 side wall of furnace top cover opens up Coal feed point, coal feed point edge are connected with cylindrical 11 outlet edge full weld of channel of coalingging, 11 import of channel of coalingging top fire door 111 sealings.1 bottom face circumference of furnace top cover is connected with 2 top end face circumference full weld of bosh.2 inner cavity of bosh is in upright barrel-shaped, distance 2 inner chamber bottom surface 200mm~250mm height levels of bosh arrange fire bars 3.2 sidewall bottom of bosh opens up combustion air inlet, helps Combustion air inlet edge is connected with 4 outlet edge full weld of deashing channel.4 central axis of deashing channel be horizontal line, deashing channel 4 Central axis extended line and 2 central axis upright of bosh intersect, the rectangular shape of 4 vertical section of deashing channel, 4 width of deashing channel For 0.5~0.6 times of 2 internal diameter of bosh, 4 inner cavity of deashing channel is connected with fire bars 2 inner cavity of bosh below 3 as static pressure area.Deashing 4 import bottom fire door 41 of channel seals, and fire door 41 centrally disposed combustion air in bottom is passed through mouth.4 inlet end face of deashing channel and dress 11 inlet end face of coal channel is all in hot air chamber front wall outside wall surface.4 inner cavity top surface of deashing channel be higher by 3 top surface 75mm of fire bars~ 85mm, 11 central axis angle with horizontal plane of channel of coalingging are 30 °~60 °, and coaling 11 internal diameter 80mm~100mm of channel, coalings 11 central axis extended line of channel and 2 central axis of bosh intersect at scattered 6 end face center of coal bed.Bank up rebasing type in 3 top of fire bars Scattered coal bed 6 is banked up in coal seam 5, rebasing 5 top of moulded coal layer.Across coalingging, the igniting coal cinder 7 of channel 11 is naturally fallen in scattered 6 top surface of coal bed Heart position.The horizontally disposed fire bars 3 in 2 inner cavity of bosh, 3 top of fire bars is bottom-up to be followed successively by rebasing moulded coal layer 5, dissipates coal bed 6 and point Kindling block 7.

Furnace top cover 1 is in upright round platform tubular, height 100mm~150mm, 1 bottom face circumference of furnace top cover and 2 top end face of bosh Circumference full weld connects, and top end face circular hole is from kiln gas outlet.1 internal face of furnace top cover is heat-reflecting surface, helps to maintain to dissipate 6 top surface ignition temperature of coal bed.Coaling channel 11 and 2 central axis extending line intersection point of bosh and 3 top surface of fire bars distance for 0.7m~ 0.9m, 2 inner cavity of bosh are in upright barrel-shaped, 2 cavity heights 1.2m~1.5m of bosh, internal diameter 0.9m~1.1m.2 inner cavity of bosh is high Degree 1.2m~1.5m is under the high 2.5m limitations of existing hot air chamber crown wall, deducts spatial altitude shared by mixing chamber and heat exchange single tube The maximum height that can be utilized afterwards, while consider to fill the balance of coal briquettes as more as possible as a result, thus can both ensure disposably to fill Coal, and meet nowadays countryside labour market needs.2 inner cavity internal diameter 0.9m~1.1m of bosh, it is contemplated that hot air chamber can utilize sky Between width 1.4m, three is negative by temperature field inhomogeneous broadening effect, wall effect and funneling effect etc. caused by the big cross section of fixed bed Face effect is reduced to minimum level.2 inner wall of bosh of the top of fire bars 3 sticks fire brick layer, and refractory brick floor height 300mm~ 500mm, thick 30mm~50mm.Rebasing 5 lime-ash of moulded coal layer on fire bars 3 is natural along 3 gap of fire bars after first being smashed to pieces with inverted T-shaped hook Under fall on deashing channel 4, due to dissipate 6 content of ashes of coal bed it is low, lime-ash quality is loose after burning, is emptying the pad above fire bars 3 After the lime-ash in die bed coal seam 5, the lime-ash for dissipating coal bed 6 drops down onto the bottom of bosh 2 naturally along the gap of fire bars 3 under the effect of gravity, It can smoothly be shoveled out with spades.Deashing channel 4 can carry out deashing operation and supply combustion air, and 4 width of deashing channel is bosh 2 0.5~0.6 times of internal diameter, 4 cavity heights of deashing channel are higher by 3 top surface 75mm~85mm of fire bars, and 4 central axis of deashing channel is Horizontal line, 4 central axis extended line of deashing channel and 2 central axis upright of bosh intersect, and 4 vertical section of deashing channel is rectangular Shape, 4 cavity heights of deashing channel are higher by 3 top surface 75mm~85mm of fire bars, are just moulded coal height, can be lacked from 75mm~85mm Moulded coal is filled at mouthful, moulded coal forms rebasing moulded coal layer 5 after taking 3 plane of fire bars.Briquette adhesive is common yellow soil, is ensured Lime-ash has sufficient intensity after Combustion of Mould Coal, prevents from being dissipated the crushing of the lime-ash after coal bed 6 burns, causes to dissipate 6 combustion ashes of coal bed Fall into deashing channel 4.When rebasing moulded coal layer 5 dissipates coal for preventing to pre-install deashing channel 4 is fallen into from 3 gap of fire bars because dissipating coal.

1 inner cavity top end face of furnace top cover is from kiln gas outlet.1 inner cavity side of furnace top cover is connected with channel 11 of coalingging, dress 11 central axis angle with horizontal plane of coal channel is 30 °~60 °, and coaling 11 internal diameter 80mm~100mm of channel, operative employee during coal It need not just enter in stove, reduce the workload of operative employee, reduce recruitment cost.2 inner cavity of 1 bottom face of furnace top cover and bosh Top end face overlaps, and 2 inner cavity lower part of bosh is provided with deashing channel 4, and 4 import bottom fire door 41 of deashing channel seals, in bottom fire door 41 Heart setting combustion air is passed through mouth, facilitates deashing simultaneously, is also convenient for the addition of rebasing moulded coal layer 5, while be also used as combustion fan Air is passed through mouth, ensures that burning is abundant.

Hot-blast stove process and assemble sequence be：The metal shell of 2 two furnace top cover 1, bosh components is cold worked out in roll bending；In stove The side of head cover 1 processes coal feed point, then processes combustion air inlet in 2 side bottom surface of bosh；Process fire bars 3,3 material of fire bars Matter is cast iron materials, for a long time using indeformable under hot environment, then fire bars 3 is placed in 2 inner cavity of bosh.3 top stove of fire bars 2 inner wall of abdomen sticks 300mm~500mm high, 30mm~50mm thickness fire brick layers.Stove within 3 top 300mm~500mm of fire bars 2 inner wall of abdomen due to dissipate coal by its own gravity fall, easily to 2 inner wall of bosh generation mechanical impact, stick thickness 30mm~ 50mm refractory brick is to extend hot-blast stove service life.In addition 2 region of bosh (the i.e. static pressure area) temperature of fire bars below 3 is low, nothing High temperature scaling loss potential problem, therefore fire bars 2 inner wall of bosh below 3 and 4 inner wall of deashing channel do not stick refractory brick or refractory casting Layer.A small amount of firewood is used, Free water in refractory lining and water of constitution are slowly precipitated, prevents refractory lining from coming off, melt downslide Or high temperature spalling and shorten the working life.1 bottom face circumference of furnace top cover is connected with 2 top end face circumference full weld of bosh.

When heating wind furnace using scattered coal is counter, needed before the addition of scattered coal rebasing moulded coal layer 5 from fire bars 3 and deashing channel 4 Top surface notch is filled in, and is covered with 3 entire top surface of fire bars, is dissipated coal and is poured into from channel 11 of coalingging, due to the presence of rebasing moulded coal layer 5, It ensure that form scattered coal bed 6.6 top surface of coal bed is dissipated with 11 central axis of channel of coalingging with 2 central axis intersection point of bosh distance not surpass 20mm is crossed, is dropped down onto naturally in channel 11 of coalingging by means of its own gravitation energy after finally putting into 1~2 piece of igniting coal cinder 7 being just burning 2 central axis near intersections region of mandrel line and bosh.The scattered coal bed 6 of the slow surrounding of igniting of igniting coal cinder 7.Because coaling channel 11 central axis intersect at scattered 6 end face center of coal bed with 2 central axis of bosh, in addition coaling 11 central axis of channel and horizontal plane Angle is 30 °~60 °, and igniting coal cinder 7 is caused just to drop down onto scattered 6 end face center of coal bed, " dissipates 6 end face center igniting of coal bed+side wall It is intermediate scarce wind that effect ", which brings effect, combustion velocity can be controlled to be not too fast raising, so as to meet three-phase-drying for tobacco work Changing yellow stage heat supply needs in skill.It is in irregular shape to dissipate coal, 6 gas channel blocking probability of scattered coal bed is low, and air can be kept to collect ash certainly Area be upward through fire bars 3 flowed to combustion zone it is unimpeded.

Operative employee's closing is coaling channel 11 and deashing channel 4, and after accessing combustion fan, you can setting temperature controller humiture Time parameter simultaneously makes it start operation, and air is sent into bosh 2 by combustion fan, and combustion air is in scattered coal bed 6 all to upstream Dynamic, combustion front is slowly slowly moved to 3 top surface of fire bars, long-time open fire backfire stable heating from 2 top of bosh, you can tight Patch baking process curve is warming up to 68 DEG C upwards, until baking terminates, safe and stable operation 6~7 days completes changing yellow stage, fixation Phase and scapus phase combustion heat supplying task meet the requirement of Three-stage Curing of Flue-cured Tobacco technical matters.Rebasing 5 lime-ash of moulded coal layer is first during deashing It is smashed to pieces with inverted T-shaped hook, rebasing 5 lime-ash of moulded coal layer falls on deashing channel 4 along under the gap nature of fire bars 3.Due to dissipating ash content of coal Content is low, and lime-ash quality is loose, and lime-ash can drop down onto the bottom of bosh 2 naturally along 3 gap of fire bars under the effect of gravity, finally use iron Shovel shovels out.

During using the present invention, dress cigarette room is constant, and hot wind chamber size 1.4m × 1.4m is constant, flue-cured tobacco temperature controller and control circuit Constant, combustion fan and circulating fan specification are constant, only need 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 has that " coal is with coalingging 11 central axis extended line of channel and 2 central axis of bosh intersects at scattered coal bed 6 and pushes up Face " center " structure feature.11 central axis angle with horizontal plane of channel of coalingging is 30 °~60 °, and natural lubricating substance ensure that scattered coal Between gas channel size it is enough, fuel energy contacted with air it is more abundant, burning it is more abundant, reduce combustion fan Power consumption, practice have shown that 150W combustion fans can meet the combustion-supporting demand of burning.During igniting, igniting coal cinder 7 is thrown from channel 11 of coalingging Enter, due to coalingging 11 central axis extended line of channel and 2 central axis of bosh intersects at scattered 6 end face center of coal bed, coal cinder 7 of lighting a fire When putting into bosh 2 from channel 11 of coalingging, scattered 6 end face center of coal bed can be just dropped into, forms center fire, while side Wall effect causes to lack wind near 2 central axis of bosh, and in three-stage Tobacco Leaf Curing, changing yellow stage can automatically control burning speed Degree realizes smoulder.Using tobacco flue-curing technology of the present invention for improving baking quality of tobacco, increase tobacco grower's income There is remarkable effect.In addition during coal, operative employee directly dissipates coal from by the input of channel 11 of coalingging, and operative employee need not enter bosh 2 In, thermal radiation loss is avoided, while stove outer space flow of air is smooth, operative employee goes slick in stove external enwergy.

Invention has " 3 plane of fire bars is below 4 top surface of rectangular-shape deashing channel " structure feature.4 width of deashing channel For 0.5~0.6 times of 2 internal diameter of bosh, 4 cavity heights of deashing channel are higher by 3 top surface 75mm~85mm of fire bars.On the one hand it is being packed into pad During die bed coal seam 5, rebasing moulded coal layer 5 is filled in from the notch between 4 top surface of fire bars 3 and deashing channel, makes its tightly packed in stove 3 entire top surface of item ensures the coal piling requirements such as the rebasing gap size during stacking of moulded coal layer 5 is moderate.On the other hand into During row deashing, since the distance that 3 top surface of fire bars is higher by deashing channel 4 is 75mm~85mm so that easily do broken rebasing type during deashing 5 lime-ash of coal seam.After the lime-ash for doing broken rebasing moulded coal layer 5, less due to dissipating ash content of coal content, lime-ash quality is more loose, only Ensure after removing all rebasing 5 lime-ash of moulded coal layer, the lime-ash for dissipating coal bed 6 is fallen naturally along the gap of fire bars 3 under the effect of gravity Into deashing channel 4, can smoothly be shoveled out with spades.In addition operative employee, which need not enter bosh 2, can complete deashing coal etc. Process, stove outer space flow of air is smooth, and operative employee's operation is comfortable.

" coal is with coalingging 11 central axis extended line of channel and 2 central axis of bosh intersects at scattered coal for inventive structure feature 6 end face centers of bed " can guarantee center fire, meet three-phase-drying for tobacco heat supply needs." 3 plane of fire bars is in cuboid for structure feature Below 4 top surface of shape deashing channel " it can guarantee that deashing operation of coalingging is comfortable, accomplish that tobacco flue-curing is people-oriented.Structure feature " coal With coalingging 11 central axis extended line of channel and 2 central axis of bosh intersects at scattered 6 end face center of coal bed " it is that " flowing passes in stove Hot combustion process is scientific and reasonable " precondition.

One of inventive technique feature is " disposably coalingging ".Furnace chamber of the present invention is tall and big, furnace chamber volume is big, combustion space Effective rate of utilization is high, then can fill more scattered coal, so as to avoid baking heat supplying process midway addition coal, mitigates operative employee's labor Fatigue resistance.2 cavity heights 1.2m~1.5m of bosh of the present invention, internal diameter 0.9m~1.1m, combustion space effective rate of utilization reach 100%, disposable needs of coalingging can be met.Disposable coal capacity of the invention is slightly above continuous tunnel furnace coal capacity, and the thermal efficiency is higher by Continuous tunnel furnace 25%, disposable coal capacity the Nature can keep the longer combustion heat supplying time.

Inventive technique feature second is that " open fire reverse combustion ".The present invention completely extends across fire bars 3 by the air that combustion fan drives The bottom-up Uniform Flow in scattered coal bed 6.Whole air flow through scattered coal bed 6, light a fire and draw since scattered 6 end face center of coal bed Combustion, due to " dissipating 6 end face center igniting of coal bed+wall effect ", combustion front is initially positioned at scattered 6 top surface of coal bed, and igniting coal cinder 7 is first Its underpart of igniting dissipates coal, due to wall effect, leads to intermediate scarce wind, simultaneously because igniting coal cinder 7 is located at the top for dissipating 6 top surface of coal bed It on point, is contacted it is difficult to dissipate coal with surrounding, coal can only be dissipated by lighting lower floor and combustion front is made slowly to move from up to down, combustion front moves Dynamic direction and air-flow direction are on the contrary, realize open fire reverse combustion process.It is constantly pre- in high-temp combustion downwards flow process Heat contacts down take a stroll coal and air, dissipates the carbonization gas formed during coal preheating and enters combustion front generation completely burned reaction, Leave the high temperature CO of combustion front₂There is no high-temperature coke to contact when gas flows up, i.e. life does not become reducibility gas CO, Discharge fume CO in this way₂Gas content is high, CO gas contents are extremely low, and the thermal efficiency is increased to 75% or so." open fire reverse combustion ", which can guarantee, to be helped Fire fan safe operation.The present invention is based on open fire reverse combustion principle, combustion front downstream is fresh scattered coal, between combustion front and static pressure area The scattered coal bed 6 and rebasing moulded coal layer 5 for having certain altitude are separated by, in addition high-temperature furnace gas rises flowing naturally so that and combustion fan For the quiet nip space being connected always in low-temperature condition, no high-temperature furnace gas, which is detained to flow backwards, burns the appearance of combustion fan phenomenon, nothing Palpus operative employee frequently monitors combustion fan, thoroughly solves combustion fan operation unsafe problems.

The agriculture each cigarette district tobacco modulation in rural urbanization field toasts heat supply occasion and uses scattered coal intensive flue-cured tobacco and the baking of scattered leaf Roasting combustion heat supplying device, all can be used the present invention.

Tobacco flue-curing practice display：It disposably coalings, deashing is easy；Igniting is ignited simple；Exhaust gas temperature<80 DEG C, flue gas CO discharges reduce by 75%, and fire coal saves more than 25%；It can be close to baking process curve generation hot wind, be sent out without warm overheating problem is fallen It is raw；No high-temperature furnace gas leaks, and combustion fan temperature is consistently lower than 38 DEG C, no high temperature over-heated fault；Saving of work and time cost declining；Dry cigarette Leaf quality is good, no endoplasm loss, and energy-saving and emission-reduction safety and comfort performance is more prominent.

Claims (1)

1. scattered coal is counter to heat wind furnace, mainly including furnace top cover, bosh, fire bars, deashing channel, rebasing moulded coal layer, scattered coal bed and point Kindling block, furnace top cover are included in upright round platform cylindrical sidewall, and furnace top cover side wall opens up coal feed point, coal feed point edge and cylindrical The full weld connection of channel outlet of coalingging edge, channel entrance of coalingging top oven door sealing, furnace top cover bottom face circumference and bosh top Face circumference full weld connection, bosh inner cavity are in upright barrel-shaped, are arranged apart from bosh inner chamber bottom surface 200mm~250mm height levels Fire bars, bosh sidewall bottom open up combustion air inlet, and combustion air inlet edge is connected with deashing channel outlet edge full weld, Deashing channel center axis is horizontal line, and deashing channel center axis extended line and bosh central axis upright intersect, and deashing leads to The rectangular shape of road vertical section, deashing channel lumen are connected with the following bosh inner cavity of fire bars as static pressure area, deashing channel entrance With bottom oven door sealing, fire door centrally disposed combustion air in bottom is passed through mouth, deashing channel entrance end face and channel entrance end face of coalingging All in hot air chamber front wall outside wall surface, it is characterised in that：Deashing channel lumen top surface is higher by fire bars top surface 75mm~85mm, coalings Channel center's axis angle with horizontal plane is 30 °~60 °, and coaling channel internal diameter 80mm~100mm, and channel center's axis of coalingging prolongs Long line and bosh central axis intersect at scattered coal bed end face center, and rebasing moulded coal layer, rebasing moulded coal layer top are banked up above fire bars Bank up scattered coal bed, across channel ignition coal block of coalingging naturally fall in scattered coal bed end face center ignite coal combustion reaction.