CN106642675A - Reverse burning tunnel furnace for intensive flue-cured tobacco - Google Patents
Reverse burning tunnel furnace for intensive flue-cured tobacco Download PDFInfo
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- CN106642675A CN106642675A CN201710106454.0A CN201710106454A CN106642675A CN 106642675 A CN106642675 A CN 106642675A CN 201710106454 A CN201710106454 A CN 201710106454A CN 106642675 A CN106642675 A CN 106642675A
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 46
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 46
- 239000003245 coal Substances 0.000 claims abstract description 196
- 238000002485 combustion reaction Methods 0.000 claims abstract description 196
- 230000003068 static effect Effects 0.000 claims abstract description 48
- 239000004484 Briquette Substances 0.000 claims description 73
- 230000001413 cellular effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 208000035126 Facies Diseases 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- XLTMWFMRJZDFFD-UHFFFAOYSA-N 1-[(2-chloro-4-nitrophenyl)diazenyl]naphthalen-2-ol Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC1=CC=C([N+]([O-])=O)C=C1Cl XLTMWFMRJZDFFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 41
- 239000000446 fuel Substances 0.000 description 12
- 239000011449 brick Substances 0.000 description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 241000886569 Cyprogenia stegaria Species 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/008—Air heaters using solid fuel
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/189—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
A reverse burning tunnel furnace for intensive flue-cured tobacco mainly comprises a furnace wall, an inverted-L-shaped door and a standby door; the inverted-L-shaped door comprises a vertical plate and a horizontal plate; a furnace inner cavity comprises a top arch apex area and a bottom cuboid area; the cuboid area comprises a coal bed area; the left end face of the coal bed area is 150 mm away from the inner wall face of a left end wall, and the right end face of the coal bed area is 75 mm or above away from the inner wall face of a right end wall; 1-3 pieces of flaming red type coal is stacked at the center of the right end face of the coal bed area; the horizontal plate of the inverted-L-shaped door stretches into the furnace inner cavity by 150 mm; a static pressure area is defined by the inverted-L-shaped door, two front side and rear side walls, the ground and the left end face of the coal bed area; two left and right adjacent square coal airflow channels of the coal bed area are correspondingly communicated; all combustion-supporting air of the static pressure area evenly flows into the airflow channels of the coal bed area; and a combustion face slowly and horizontally moves in the direction opposite to flowing of the combustion-supporting air. The reverse burning tunnel furnace is used for the intensive flue-cured tobacco in the tobacco industry. By means of the reverse burning tunnel furnace for the intensive flue-cured tobacco, the flue gas CO emission is reduced by 75%, coal is saved by 25%, the reverse burning tunnel furnace for the intensive flue-cured tobacco can be tightly close to the baking process curve to generate hot air, and the air volume of a combustion-supporting draught fan is constant.
Description
Technical field
Invention is related to a kind of burning honeycomb square honeycomb briquette, accurate with open fire reverse combustion, high temperature isolation and combustion fan start and stop
The intensive flue-cured tobacco of the technical characteristics such as regulation and control combustion heat supplying burns continuous tunnel furnace with anti-, it is adaptable to agriculture rural area field intensive flue-cured tobacco hot air chamber
Combustion heat supplying device is used.
Background technology
Dense tobacco flue-curing house is because capacity is big, forced ventilation, hot blast reusable edible, plane humiture is more uniform, without falling, bar falls
Cigarette causes disaster hidden-trouble, is approved by numerous tobacco growers.As a example by 2012, the whole nation has dense tobacco flue-curing house about 1,200,000.According to system
Meter, more and more intensive flue-cured tobaccos are using the conventional tunnel stove combustion heat supplying that principle is just being burnt based on dying fire.Conventional tunnel stove can be once
Property load 800～1000 cylinder moulded coals, meet 5～6 days baking heat supply needs, do not affect tobacco grower's night's rest, especially adapt to
Need in the currently situation such as each cigarette district hired laborer hardly possible and labor cost height.
Accompanying drawing 4 is the vertical sectional view of conventional tunnel stove.As shown in Figure 4, conventional tunnel stove includes furnace wall 1, the He of spare gate 3
Plane plate door 7.Furnace wall 1 includes arc surfaced crown wall, both walls before and after the two headwalls peace planar of plane left and right, near right-hand member wall
Crown wall arrange exhaust opening 11.Right-hand member wall bottom opens up the standby stove gate of 600mm × 560mm rectangles, and standby stove gate is with standby
It is tightly connected with door 3, the centrally disposed flame-observing hole 31 of spare gate 3.Left end wall opens up the left stove gate of 600mm × 560mm rectangles, left
Stove gate plate door 7 is tightly connected, and the center of plate door 7 opens up centre bore 71 and flows through for combustion air.Two headwall outer walls of left and right
, from 2000mm, in front and back both walls internal face is apart from 720mm for identity distance.Furnace wall 1 and ground surround tunnel-like furnace chamber.Accompanying drawing 5 is attached
Fig. 4 is along C-C directions vertical sectional view.As shown in Figure 5, furnace chamber includes top vault area and bottom cuboid area, vault area
Bottom surface and cuboid area top surface overlap, and cuboid area is included near the rectangular-shape ignition zone of left end wall and the length near right-hand member wall
Cube shape coal bed area, the folded full cylinder moulded coal 8 in coal bed area, cylinder moulded coal 8 is in cellular, the high 75mm～85mm of single cylinder moulded coal 8,
Stack pyrophoric fuel 6 in ignition zone.Ignition zone is connected with vault area.The gas channel central axis level of cylinder moulded coal 8 and with it is front
Afterwards both walls are parallel, and the stack height of cylinder moulded coal 8 is 600mm, and furnace chamber is not provided with fire bars, furnace chamber ground supports cylinder moulded coal
8 total weights.Along parallel to Qian Hou both walls direction sector width is ignited for 75mm～150mm.When continuous tunnel furnace runs, it is close to right-hand member
Within the walls wall right-to-left stacks 800～1000 cylinder moulded coals 8, and pyrophoric fuel 6 is put in ignition zone, closes spare gate 3, lights
Pyrophoric fuel 6, closes plate door 7.Combustion fan air outlet stretches into centre bore 71, and combustion air is blasted ignition zone by combustion fan,
First light pyrophoric fuel 6, pyrophoric fuel 6 ignites the unburned cylinder moulded coal 8 being adjacent, and fires under combustion fan driving effect
Burning face edge and combustion air flowing equidirectional are slowly moved.Continuous tunnel furnace is just burning mode combustion heat supplying with dying fire.Investigation shows：Combustion
Area is burnt close to combustion fan, high-temperature furnace gas are reversely flowed backward in combustion fan housing by centre bore 71, cause combustion fan high
Warm damage rate is up to 39%.Practice have shown that：Combustion fan coil insulation hydraulic performance decline causes air-out ability permanently to decline, and ignites
To vault area, partial air is short-circuited to arch to area partial air bypass stream by gap midway bypass between coal bed area cylinder moulded coal 8
Top area, adds the combustion air for flowing into combustion zone with the discharge of CO forms, causes combustion air utilization rate not high, and tobacco flue-curing house temperature is low
Go out 2 DEG C～8 DEG C of baking process design temperature, it is impossible to meet big moderate heat tobacco flue-curing heat supply needs, reduce Flue-cured tobacco Quality；Vault area
It is detained CO concentration high, detonation casualty accident easily occurs；Flow backwards by the high-temperature furnace gas of centre bore 71, hot blast temperature does not catch up with Roaster
Skill design temperature, adds the flue gas CO concentration height discharged from exhaust opening, the thermal efficiency as little as 35%～50%.
Exploitation baking combustion heat supplying performance of control is good, safety, saving of work and time, Flue-cured tobacco Quality are secure, inexpensive, economy
The intensive flue-cured tobacco of high-efficient energy-saving environment friendly Novel tunnel-type hot-blast stove, can meet China's tobacco modulation industry energy-saving and reduce discharging situation
Need, and then promote tobacco business sustainable development.
The content of the invention
In order to overcome conventional tunnel stove to cause high-temperature furnace gas reverse flow scaling loss combustion fan, combustion air because dying fire is just burning
Utilization rate is low, hot blast temperature does not catch up with baking process design temperature, easy detonation is hurted sb.'s feelings and the low shortcoming of the thermal efficiency, invention design one
Burning honeycomb square honeycomb briquette is planted, it is special with technologies such as open fire reverse combustion, high temperature isolation, combustion fan start and stop control accurate combustion heat supplyings
Levy, meet China's tobacco business saving of work and time, safety economy high-quality, the intensive flue-cured tobacco of high-efficient energy-saving environment friendly intensive flue-cured tobacco needs and use
It is anti-to burn continuous tunnel furnace.
Intensive flue-cured tobacco burns continuous tunnel furnace with anti-, mainly including furnace wall, inverted L shape door and spare gate, inverted L shape door include vertical plate and
Level board, vertical plate top margin and the left broadside of level board it is equal, vertical plate top margin and the left broadside of level board are welded to connect, the connection of two plates
So that vertical plate is integrally presented L-shaped with level board, furnace wall includes arc surfaced crown wall, before and after the two headwalls peace planar of plane left and right
Both walls, near right-hand member wall crown wall exhaust opening is arranged, and furnace wall and ground surround tunnel-like furnace chamber, and furnace chamber includes top vault
Area and bottom cuboid area, vault area bottom surface and cuboid area top surface overlap, cuboid head of district side level and and both walls in front and back
It is parallel, cuboid sector width and furnace chamber width it is equal, cuboid area include coal bed area, coal bed area be in rectangular-shape, coal bed area
Wide height and cuboid area width are highly equal respectively, and coal bed area is highly 600mm, and coal bed area left side is apart from left end wall within the walls
150mm, left end wall bottom opens up left stove gate, and inverted L shape door vertical plate is from the left stove gate of outer side seal, vertical plate and a coal bed area left side
End face is parallel, and vertical plate center opens up fresh air inlet and flows through for combustion air, and level board is parallel with ground, and level board puts in furnace chamber
150mm to the right broadside of level board and coal bed area left side top width side are completely superposed, and coal bed area, left stove gate and inverted L shape door are vertical
Plate three width is highly equal respectively, and inverted L shape door, in front and back both walls, ground and coal bed area left side surround static pressure area, and static pressure area exists
In furnace chamber, apart from right-hand member more than wall 75mm within the walls, right-hand member wall bottom opens up right stove gate, right stove gate for coal bed area right side
The standby door sealing in outside, spare gate opens up flame-observing hole, and full square honeycomb briquette is folded in coal bed area, and square honeycomb briquette is in cellular, square Gas Flow
Both walls are parallel with ground and in front and back for channel center's axis, and each gas channel correspondence of adjacent two square honeycomb briquette in left and right is connected, square
Coal and left and right up and down before and after adjacent square honeycomb briquette and equal gapless between both walls in front and back, coal bed area top layer square honeycomb briquette top surface is same
On horizontal plane, coal bed area right side center is stacked 1～3 piece of vehement red moulded coal, vehement red moulded coal for burn and with coal bed area square
Coal identical square honeycomb briquette.
It is close that the tobacco of agriculture rural area field burning honeycomb square honeycomb briquette modulates industry, tobacco planting base and tobacco grower cooperative society
Collection flue-cured tobacco hot air chamber combustion heat supplying device, it is possible to use invention.
Invention operation is comfortable, and economy, energy-conserving and environment-protective and social benefit are notable.Invention is disposably coaling, and is ignited simple.Using
Show：Compare with conventional tunnel stove, flue gas CO discharges reduce by 75%, economize on coal 25%；Combustion fan start-stop regulates and controls to combustion heat supplying
It is functional, baking process curve can be close to and generate intensive flue-cured tobacco hot blast, do not fall temperature；Combustion fan case temperature is consistently lower than
38 DEG C, without high temperature scaling loss, combustion fan air-out is stable, undamped.
Description of the drawings
Fig. 1 is that intensive flue-cured tobacco burns the vertical sectional view of continuous tunnel furnace with anti-.
Fig. 2 is the anti-continuous tunnel furnace that burns of intensive flue-cured tobacco along the vertical sectional view in A-A directions.
Fig. 3 is the anti-continuous tunnel furnace that burns of intensive flue-cured tobacco along the vertical sectional view in B-B directions.
Fig. 4 is the vertical sectional view of conventional tunnel stove.
Fig. 5 is conventional tunnel stove along C-C directions vertical sectional view.
In Fig. 1～Fig. 5,1 is furnace wall, and 2 is inverted L shape door, and 21 is fresh air inlet, and 3 is spare gate, and 31 is flame-observing hole, and 4 is vehement red
Moulded coal, 5 is square honeycomb briquette, and 6 is pyrophoric fuel, and 7 is plate door, and centered on 71 hole, and 8 is cylinder moulded coal.
Specific embodiment
Invention is further described below in conjunction with the accompanying drawings.
As shown in 1～accompanying drawing of accompanying drawing 3, intensive flue-cured tobacco burns continuous tunnel furnace with anti-, mainly includes furnace wall 1, inverted L shape door 2 and standby
Door 3.Inverted L shape door 2 includes vertical plate and level board, and vertical plate top margin and the left broadside of level board are equal, vertical plate top margin and level
The left broadside of plate is welded to connect, and two plates connect so that vertical plate is integrally presented L-shaped with level board.
Furnace wall 1 can be brick type Refractory brick wall, the brick wall built by laying bricks or stones by thin refractory brick blocks high temperature clay bonding and
Into furnace wall 1 can also be monoblock type refractory casting structure.The outside wall surface of furnace wall 1 can lay 3mm～5mm thickness metal shells, to subtract
Few destruction of the brick wall high-temperature expansion thermal stress to fireproof construction sealing.Leak out when can cause to toast upper tobacco leaf in the gap of furnace wall 1
Hot blast temperature exceed all the time baking process temperature.Furnace wall 1 mainly includes arc surfaced crown wall, plane left and right two headwalls peace planar
Both walls in front and back.In front and back both walls are arranged vertically and are parallel to each other, and the headwall of left and right two is arranged vertically and is parallel to each other, in front and back both sides
Wall and two headwalls of left and right are mutually perpendicular to, and the crown wall near right-hand member wall arranges exhaust opening 11.Two headwalls of crown wall and left and right, left and right two ends
Wall and in front and back both walls, in front and back both walls and crown wall, left and right two headwalls and ground, ground and in front and back both walls are to use high-temp glue
Mud is sealedly and fixedly connected.In front and back both sides wall thickness 30mm～40mm, is formed by laying fireproof bricks.Crown wall thickness 40mm～60mm, by resistance to
Firebrick is built by laying bricks or stones and is formed.Left and right two ends wall thickness 240mm～260mm, is built by laying bricks or stones by ordinary red brick and is formed.Left end wall outside wall surface and right-hand member wall
The distance between outside wall surface is 2000mm, and within the walls the distance between wall and back side wall internal face are 720mm for front side.
Furnace wall 1 and ground surround tunnel-like furnace chamber, and furnace chamber includes top vault area and bottom cuboid area, vault area
Bottom surface and cuboid area top surface overlap, and cuboid area bottom surface is ground, cuboid head of district side level and parallel with both walls in front and back,
Cuboid sector width and furnace chamber width are equal.Cuboid area include coal bed area, coal bed area be in rectangular-shape, coal bed sector width,
Height and cuboid sector width, height are equal respectively, and coal bed area is highly 600mm.
Coal bed area left side is apart from the left end of furnace wall 1 wall 150mm within the walls.The left end wall bottom of furnace wall 1 opens up left stove gate, left
Stove gate outside is sealed with the vertical plate of inverted L shape door 2, and vertical plate is parallel with coal bed area left side, and vertical plate center opens up fresh air inlet
21 flow through for combustion air, and the level board of inverted L shape door 2 puts in furnace chamber 150mm, the level board width of inverted L shape door 2 and left stove gate width
Degree is equal, and the width of left stove gate, the vertical plate of inverted L shape door 2 and cuboid area three is equal, and left stove gate, inverted L shape door 2 are vertical
Plate and cuboid area three's is highly equal.The level board of inverted L shape door 2 is parallel with ground, and the vertical plate of inverted L shape door 2 and coal bed area are left
End face is parallel.The vertical plate four of inverted L shape door 2 ensures furnace gas not when the left stove gate four of left end wall outside wall surface is brought into close contact
Leak out from the left stove gate edge of left end wall.It is hollow that inverted L shape door 2, in front and back both walls, ground and coal bed area left side surround
Interval is static pressure area, due to there is the level board cut-off of inverted L shape door 2 effect static pressure area not connect with vault area.Coal bed area top side face and L
The level board of type door 2 is in same level.Within the walls wall minimum range is 75mm with right-hand member for coal bed area right side.Tobacco flue-curing house fills cigarette
When amount is few, coal bed area right side is with right-hand member inner wall identity distance from more than 75mm.Right-hand member wall bottom opens up the right stoves of 600mm × 560mm
Doorway, right stove gate spare gate 3 is sealed, the internal face four of spare gate 3 when the right stove gate four of right-hand member wall outside wall surface is brought into close contact,
And ensure that furnace gas is not leaked out from right stove gate edge.The center of spare gate 3 opens up flame-observing hole 31, generally sees fire
Hole blocks and does not use.
Coal bed area is stacked to be filled up in square honeycomb briquette 5, stove without fire bars, the total weight of ground supports square honeycomb briquette 5.The long side of square honeycomb briquette 5
It is equal with broadside, the flash of square honeycomb briquette 5 and gas channel centerline axis parallel.The each gas channel of square honeycomb briquette 5 arrangement is in cellular.Side
The each gas channel central axis of moulded coal 5 is parallel with ground level and parallel with both walls in front and back, each air-flow of adjacent two square honeycomb briquette in left and right
Passage correspondence is connected, the left and right that square honeycomb briquette 5 is adjacent up and down before and after gapless between square honeycomb briquette, both walls and square in front and back
Gapless between coal 5.In same level, the stack height of square honeycomb briquette 5 and coal bed area are highly for coal bed area top layer square honeycomb briquette top surface
It is equal.Inverted L shape door level board and coal bed area top surface stretch into the right broadside of inverted L shape door level board of furnace chamber in same level
It is completely superposed with coal bed area left side top margin.Coal bed area right side center is 1～3 piece of vehement red moulded coal 4, and vehement red moulded coal 4 can also
Take the whole right side in coal bed area, the gas channel level of vehement red moulded coal 4 and in front and back both walls are parallel.Every piece of square honeycomb briquette 5 is by nothing
Machine bonding agent bonding is formed, and volume does not reduce after burning completely, becomes square slag.
Under the level board iris action of L-type door 2, static pressure area combustion air will not bypass stream and arrive vault area, and combustion air is complete
Portion's uniform flow enters each gas channel in coal bed area, flows into combustion face and all become CO2Discharge from exhaust opening with flue gas, combustion air
Utilization rate reaches 100%.Combustion air first passes through the vertical plate fresh air inlet 21 of inverted L shape door 2 under combustion fan driving effect, connects
Into static pressure area, then whole uniform flows enter each gas channel in coal bed area, then enter vault horizontal through coal bed area right side
Area, most after Jing exhaust openings 11 discharge, vehement red moulded coal 4 ignite effect under coal bed area right side formed initial combustion surface, subsequently
Combustion front edge and combustion air flowing rightabout are that right-to-left direction slowly moves horizontally.
Using during invention, inverted L shape door 2 being first shut off, opening spare gate 3, work of coalingging (by taking height 1.6m as an example) is from standby
Door 3 bends over to enter furnace chamber, from starting to stack square honeycomb briquette 5 away from left stove gate internal face 150mm, in coal bed area heap from left to right
Exoergic meets the square honeycomb briquette 5 of 5～6 days baking combustion heat supplying needs.Square honeycomb briquette 5 fills up coal bed area so that both walls and side in front and back
Between moulded coal, between adjacent two square honeycomb briquette in left and right and in front and back equal gapless between adjacent two square honeycomb briquette.In coal bed area right side
The heart places 1～3 piece of vehement red moulded coal 4, seals spare gate 3.Combustion fan air outlet is stretched in the fresh air inlet 21 of inverted L shape door 2, combustion air
Electromechanical source line is accessed in flue-cured tobacco controller, and combustion air first flows into static pressure area, is then uniformly flowed in each gas channel in coal bed area,
Coal bed area is flow through along direction level from left to right.Vehement red moulded coal 4 ignite successively along combustion air flowing direction combustion front upstream with
Its adjacent new square honeycomb briquette 5.Under combustion fan driving effect, combustion front edge and combustion air flowing rightabout are slowly moved
Dynamic, i.e., right-to-left is slowly moved.After baking terminates, inverted L shape door 2 and spare gate 3 are opened, square slag spades is shoveled out i.e.
Can.
Inventive structure feature, technical characteristic and the technique effect for bringing are described in detail as follows：
Invention has " inverted L shape door 2 " architectural feature.As shown in Figure 4, conventional tunnel stove includes plate door 7, ignition zone, coal
Bed area and vault area.The centrally disposed centre bore 71 of plate door 7, ignition zone is blasted by the combustion fan of centre bore 71 by combustion air,
Because ignition zone directly connects with vault area, combustion air part Jing ignition zones top bypass flows into vault area, then from smoke evacuation
Mouth 11 is discharged, and combustion air remainder flows into coal bed area.Be present drag losses in combustion air diverging flow in coal bed area, enter
One step increases the bypass combustion air flow from ignition zone top to vault area, that is, the combustion air flow for flowing into coal bed area subtracts
Few, combustion heat release is reduced.The stacking function of pyrophoric fuel 6 is both played in ignition zone, rises again and evenly distributes combustion air flow function, i.e., quiet
Nip function, simply static pressure area be in unenclosed construction, combustion air do not obtain all of.As shown in Figure 1, invention includes
Inverted L shape door 2, inverted L shape door 2 includes orthogonal vertical plate and level board, and vertical plate top margin and the left broadside of level board are equal, erect
Straight panel top margin and the left broadside of level board are welded to connect, and two plates connect so that vertical plate is integrally presented L-shaped, the level board right side with level board
Broadside puts in furnace chamber and is completely superposed with coal bed area left side top width side, level board, left stove gate and coal bed area three's width
Equal, level board stretches into furnace chamber depth and is equal to coal bed area left side to left end inner wall identity distance from vertical plate is from outer side seal
Left stove gate, vertical plate, left stove gate and coal bed area three are highly equal.The vertical plate of inverted L shape door 2 and coal bed area left side are flat
OK, level board is parallel with ground level, inverted L shape door, ground level, coal bed area left side and in front and back both walls internal face surrounds envelope in stove
Closed type static pressure area.Static pressure area left side is inverted L shape door vertical plate, and static pressure area right side and coal bed area left side are completely superposed, quiet
Nip top surface and inverted L shape door level board are completely superposed.Static pressure area occupy left end within the walls wall to the length between coal bed area left side
Cube region.In same level, static pressure area and vault area do not connect for static pressure area inverted L shape door level board and coal bed area top surface
It is logical.Combustion fan blasts the combustion air whole uniform flow in Lu Nei static pressure area and enters each gas channel in coal bed area.Combustion air level
Static pressure area is flow through, static pressure area right side and coal bed area left side are completely superposed, static pressure area right side is not required to arrange fire bars.It is quiet in stove
Nip makes combustion air all uniform inflow coal bed areas, without the loss of combustion air bypass flow, possesses closed static pressure area work(
Energy.Invention stove inside enclosed static pressure area is one of important prerequisite of invention combustion fan start and stop control accurate combustion heat supplying.Invention
With the plane plate door 7 of the replacement conventional tunnel stove of inverted L shape door 2 for possessing closed static pressure area function, combustion air bypass is solved
Flow wastes problem, improves the sensitivity that combustion air flow regulates and controls combustion heat supplying.
Invention has " combustion air flows successively through the vertical plate of inverted L shape door 2, static pressure area, coal bed area, vehement red moulded coal 4 " structure
Feature.As shown in Figure 4, conventional tunnel stove mainly includes ignition zone and coal bed area, ignition zone right side and coal bed area left side
Overlap, direction ignition zone is flowed in coal bed area upstream along combustion air.Combustion air is under combustion fan driving from centre bore 71
Into ignition zone, then coal bed area is flow through with the bag-shaped mode of jet of uneven cloth.Combustion air is equal in ignition zone and coal bed area
There is bypass loss.The function of pyrophoric fuel 6 is stacked in ignition zone and static pressure point wind function unites two into one, and static pressure area is arranged on furnace chamber
Interior, static pressure area ties up furnace chamber coal bed area space, reduces disposable coal capacity, and ignition zone is the space that combustion air flows through.
Light pyrophoric fuel 6 and start after combustion fan, combustion front edge and air flow equidirectional are slowly moved from left to right.It is such as attached
Shown in Fig. 1, invent and mainly include Lu Nei static pressure area, coal bed area and vehement red moulded coal 4, static pressure area right side and coal bed area left side are complete
Full weight is closed, and vehement red moulded coal 4 is located at coal bed area right side center.Along combustion air direction static pressure area is flowed in coal bed area upstream, coal
In the vehement upstream of red moulded coal 4, the exhaust opening 11 on crown wall is located at crown wall right side in bed area.Combustion fan drive under, combustion air from
The fresh air inlet 21 of inverted L shape door 2 enters static pressure area, and then whole horizontal homogeneous flow successively through coal bed area.Combustion air flows from static pressure area
Enter coal bed area and flow through during coal bed area without bypass loss.Separated by certain length coal bed between static pressure area and vehement red moulded coal 4
Open.After coal bed area right side center stacks vehement red moulded coal 4 and starts combustion fan, fuel face edge and air flow phase negative side
Slowly move horizontally to right-to-left.Invention use in, " static pressure area → coal bed area → vehement red moulded coal 4 " structure have no left and right it
Point, i.e., inverted L shape door 2 can be placed in right-hand member wall side, and now coal bed area right side is apart from right-hand member wall 150mm within the walls, vehement red type
Coal 4 overlays coal bed area left side center, and fuel face edge and combustion air flowing rightabout are slowly moved horizontally from left to right,
Exhaust opening 11 is positioned close to the crown wall center of left end wall.Invention " static pressure area → coal bed area → vehement red moulded coal 4 " structure, be
The three of the important prerequisite of invention combustion fan start and stop control accurate combustion heat supplying, be invention open fire reverse combustion and high temperature isolation it is important
Premise.Invention " static pressure area → coal bed area → vehement red moulded coal 4 " structure replaces conventional tunnel stove " ignition zone → coal bed area " structure, bright
Fiery anti-burning replaces dying fire just to burn, and improves combustion air utilization rate, stabilizes combustion fan air-out ability, reduces flue gas CO rows
Put concentration.
Invention has " square honeycomb briquette 5 " architectural feature.As shown in Figure 5, conventional tunnel stove coal bed area banks up cylinder moulded coal 8,
The each gas channel level of cylinder moulded coal 8 and parallel with both walls in front and back.Coal bed area bank up cylinder moulded coal 8 when, although left column type
Coal right side can be close to right cylinder moulded coal left side, but cylinder moulded coal 8 with up and down in front and back adjacent column moulded coal is difficult to gapless
Contact, the combustion air part in inflow coal bed area rises simultaneously midway bypass and is short-circuited to vault area with the bag-shaped mode of jet of cloth.In stove
Cavity space is narrow and small, and needs are bent over to bend one's legs and fill cylinder moulded coal 8, it is difficult to accomplish that each gas channel correspondence of adjacent two cylinders moulded coal is connected
It is logical, one combustion air skewness in numerous gas channels, the two increases combustion air in coal bed area flow resistance, plus
Upper to there is the combustion air part for entering ignition zone by the way that stream is directly bypassed at the top of ignition zone to vault plot structure defect, stream enters coal
The combustion air in bed area can further tail off.The each gas channel of adjacent two cylinders moulded coal does not connect chocking-up degree because people Yin Shiyin fires
Burn temperature different and different, show bad when hot blast temperature regulates and controls good during the degree of accuracy.As shown in 1～accompanying drawing of accompanying drawing 3, in invention stove
Chamber includes cuboid area, and cuboid area includes rectangular-shape coal bed area, and cellular square honeycomb briquette 5 is stacked in coal bed area.The long side of square honeycomb briquette 5
It is equal with broadside, the flash of square honeycomb briquette 5 and gas channel centerline axis parallel.Single square honeycomb briquette 5 is evenly arranged 1,4,9 or 16 gas
Circulation road, coal bed sector width and height are the integral multiple on the long side of square honeycomb briquette 5, and the height of single square honeycomb briquette 5 is 75mm～85mm.Side
Moulded coal 5 overlays coal bed area, each gas channel level of square honeycomb briquette 5 and parallel with both walls in front and back, and square honeycomb briquette 5 is full of whole coal bed
Area, and each gas channel of square honeycomb briquette 5 is uniformly distributed.Up and down in front and back square honeycomb briquette is nothing for the left and right that square honeycomb briquette 5 is adjacent
Gap-contact.It is close to the right square honeycomb briquette left side, left and right in gapless between adjacent two square honeycomb briquette in left and right, left side square honeycomb briquette right side
The each gas channel correspondence of adjacent two square honeycomb briquette is connected.Gapless between neighbouring two square honeycomb briquette, upper square honeycomb briquette bottom side is tight
The lower square honeycomb briquette top side face of patch.Gapless between adjacent two square honeycomb briquette in front and back, front moulded coal trailing flank is close to rear square honeycomb briquette leading flank.
Square honeycomb briquette 5 and in front and back gapless between both walls internal face, most one layer of front side square honeycomb briquette leading flank are close to front side wall within the walls, most
One layer of square honeycomb briquette trailing flank of rear side is close to back side wall internal face.Static pressure area is closed static pressure area, and combustion air is not in static pressure area
Can be before and after between both walls and square honeycomb briquette, between adjacent two square honeycomb briquette in left and right and in front and back between adjacent two square honeycomb briquette etc. by gap
It is through-flow to vault area, combustion air all uniformly flow to combustion front in horizontal piston stream mode, and combustion air utilization rate reaches
100%.Every piece of square honeycomb briquette 5 is formed by inorganic adhesive bonding, and volume is substantially unchanged after flammable matter burning completely.Invented party
Moulded coal 5 is the two of the important prerequisite of invention combustion fan start and stop control accurate combustion heat supplying.The replacement conventional tunnel of invention square honeycomb briquette 5
Stove cylinder moulded coal 8, combustion air replaces the bag-shaped mode of jet flowing of cloth with the flowing of horizontal piston formula mode of jet, improves combustion-supporting
Air utilization ratio, improves adjusting function of the combustion air flow change to combustion heat supplying.
Invention has " open fire reverse combustion " technical characteristic.As shown in Figure 4, conventional tunnel furnace foundation is just burning principle burning in dying fire
Heat supply.After lighting pyrophoric fuel 6, combustion fan drives combustion air to flow along coal bed area oblique upper direction, and combustion front is along coal bed
Area oblique upper direction is moved, and the cylinder moulded coal 8 in combustion front oblique upper is subject to high-temperature baking, carbonization gas in cylinder moulded coal 8, is waved
Send out and divide together with high temperature carbon dioxide CO2Contact high-temperature coke is reduced the CO of generation together, to the flowing of coal bed area oblique upper direction
And midway short circuit bypass leaves coal bed area into vault area, final Jing exhaust openings 11 are discharged.Vault area CO concentration is increased, is increased
Detonation in stove is hurted sb.'s feelings possibility.CO has interior heat energy so that combustion heat release amount is reduced, and combustion heat release does not reach maximum.Flue gas
CO contents are unstable, cause combustion heat release amount and combustion air flow not to be directly proportional, and reduce with combustion air flow regulation and control heat
Air temperature sensitivity.As shown in Figure 1, the combustion air that invention combustion fan drives enters Lu Nei static pressure area, subsequently into coal
Bed area.Static pressure area closed performance is good, and combustion air can not bypass stream to vault area, and combustion air can only be all equal in static pressure area
The each gas channel in Yun Diliujin coal beds area, and coal bed area is flowed uniformly through in horizontal piston stream mode.Vehement red moulded coal 4 ignite its with
Adjacent square honeycomb briquette 5 forms combustion front, and combustion front slowly moves horizontally along right-to-left direction, combustion front moving direction and combustion-supporting sky
Flow of air is in opposite direction, realizes open fire reverse combustion heat supply.During combustion front headwall movement to the left, constantly preheat the edge for contacting and help
Combustion air-flow direction upstream square honeycomb briquette 5, the carbonization gas of the pre- thermosetting of square honeycomb briquette 5 flow to the right with combustion air, then
Into combustion front and there is complete combustion reaction, leave the high temperature CO of combustion front2In flowing to the right without high-temperature coke therewith
Contact, i.e. life do not become CO, and so smoke evacuation is with CO2Based on.Flue gas level is flow through along combustion air flowing direction combustion zone downstream
Smoke space area between coal bed area right side and right-hand member wall is entered after diamond type slag, straight line flows through vault area, finally from exhaust opening
11 discharge.Vault area without CO gases be detained, prevent detonation in stove hurt sb.'s feelings event generation.Smoke evacuation is without the loss of energy in CO, combustion heat release
Amount reaches maximum, and combustion heat release amount and combustion air flow are directly proportional, and improve the thermal efficiency, also precisely adjust for combustion air flow
Control hot blast temperature creates favorable conditions.
Invention has " combustion fan start and stop control accurate combustion heat supplying " technical characteristic.As shown in Figure 4, conventional tunnel stove
Mainly include open type ignition zone and coal bed area, ignition zone top is connected with vault area, coal bed area banks up numerous cylinder moulded coals
8, the gas channel level of cylinder moulded coal 8 and in front and back both walls are parallel flows direction ignition zone in coal bed area upstream along combustion air.
The baking of high-temperature furnace gas that combustion fan coil insulation structure is frequently reversely flow backwards is damaged, and causes to flow into helping for ignition zone in stove
Combustion compressor flow is permanently less than metered flow.The combustion air part for entering ignition zone by the centre bore 71 of plate door 7 bypasses
Vault area is flowed, remainder is uneven to flow into coal bed area.The combustion air part in coal bed area is flowed into the bag-shaped mode of jet of cloth
Gap midway bypass short-circuit flow enters vault area between column type slag, and remainder continues diverging flow to combustion front.Into
The combustion air of combustion zone all becomes high temperature CO2Gas, then high temperature CO2Gas is constantly preheated, destructive distillation and reduction are along combustion-supporting
The unburned low temperature cylinder moulded coal 8 in air-flow direction high temperature combustion zone downstream, eventually becomes the discharge of CO gases.Through combustion-supporting sky
Throughput bypasses twice short circuit and final discharge CO gases, and Actual combustion heat release is less than the corresponding maximum of combustion fan nominal air delivery
Combustion heat release.Combustion fan start and stop are unable to control accurate combustion heat supplying, and this inaccuracy because of people's Yin Shiyin ignition temperatures
It is different and different.As shown in Figure 1, invention mainly includes being flowed the static pressure area that is arranged in order of direction along combustion air, coal bed area,
Vehement red moulded coal 4, smoke space area between coal bed area right side and right-hand member wall.Static pressure area does not connect with vault area, and coal bed area banks up
Numerous square honeycomb briquettes 5, each gas channel of square honeycomb briquette 5 correspondence is connected, the surrounding gapless of square honeycomb briquette 5.It is low through certain length unburned
Under the warm new cut-off of square honeycomb briquette 5 effect, combustion fan and inverted L shape door 2 are in all the time normal temperature environment, and combustion fan shell temperature is all the time
Less than 38 DEG C, combustion fan insulating properties are protected, combustion fan air-out maintain all the time it is specified go out wind levels.By inverted L
The fresh air inlet 21 of type door 2 enters the combustion air in static pressure area and all uniformly flows into each gas channel in coal bed area.Flow into helping for coal bed area
Combustion air all flows to combustion front with piston-like mode of jet horizontal proliferation.Combustion air into combustion zone all becomes
CO2Discharge.Combustion air does not bypass short-circuit loss and discharges CO2, Actual combustion heat release is consistently equal to combustion fan nominal air delivery
Corresponding maximum combustion heat release, realizes combustion fan start and stop control accurate combustion heat supplying, and this accuracy is reliable and stable,
Will not be different because people Yin Shiyin ignition temperatures are different.
Invention has " high temperature isolation " technical characteristic.As shown in Figure 4, conventional tunnel stove combustion fan air outlet stretches into plate
7 centre bores 71 of door, the inner side of plate door 7 is high temperature combustion zone, and combustion zone passes through centre bore 71 directly and combustion fan air outlet phase
Connection, when the combustion fan short time is out of service, furnace high-temperature furnace gas is reversely scurried in combustion air casing by centre bore 71,
Combustion fan shell temperature is caused to be increased to 200 DEG C～300 DEG C, direct scaling loss combustion fan coil causes combustion fan air-out
Static pressure permanently declines, and air mass flow permanently diminishes, or even is directly burned out.Combustion fan becomes replacement frequency highest, disappears
The most parts of consumption.To reduce combustion fan renewal cost, duty sees that combustion fan becomes conventional tunnel stove tobacco flue-curing management
One of task.Whole baking process plate door 7 is all the time adjacent to furnace high-temperature combustion zone, and plate door 7 is needed from heat-resisting cast iron housing, interior
Liner in pouring refractory material.As shown in Figure 1, on the outside of left end wall, high temperature combustion zone is always positioned near the right side invention combustion fan
The coal bed area of headwall, the unburned low temperature square honeycomb briquette 5 for having certain length between combustion zone and combustion fan all the time is separated by so that help
Combustion blower fan is in all the time low-temperature condition, and combustion fan period high-temperature furnace gas out of service are difficult to through certain length low temperature square honeycomb briquette
5 reversely flow backwards contact scaling loss combustion fan coil heat-insulating property, without diligent monitoring combustion fan operation, combustion fan air-out ability
Secure, air output is constant not to be declined, and solves the combustion fan high temperature scaling loss of conventional tunnel stove presence, combustion fan air output
Permanently decline and affect Flue-cured tobacco Quality problem.The high-temperature furnace gas that burning is generated flow through all the time coal bed area right side to right-hand member within the walls
Space between wall, the housing of spare gate 3 is needed from heat-resisting cast iron material, door lining pouring fireproof material.
Tobacco flue-curing practice have shown that：Disposably coaling deashing, coaling comfortable, deashing is easy, and igniting is ignited simple.And tradition
Continuous tunnel furnace is compared, and the discharge of invention carbon monoxide in flue gas reduces by 75%, and coal-fired calorific value saves more than 25%；Combustion fan start-stop can essence
Quasi- regulation and control baking combustion heat supplying and hot blast temperature, can be close to baking process curve and generate dense drying hot blast, and nothing falls warm phenomenon
Occur；Occur without the high-temperature furnace gas phenomenon that leaks, combustion fan temperature is consistently lower than 38 DEG C, occurs without high temperature over-heated fault, air-out
It is reliable and stable；Saving of work and time, cost declining；Flue-cured tobacco Quality is good, without endoplasm loss.
Tobacco Processing farage industry, tobacco planting processing base and the tobacco grower cooperative society for using cube shape honeycomb briquet is intensive
Flue-cured tobacco hot air chamber combustion heat supplying device, it is possible to use invention.
Claims (1)
1. intensive flue-cured tobacco burns continuous tunnel furnace with anti-, mainly includes furnace wall and spare gate, and furnace wall includes arc surfaced crown wall, plane left and right
Both walls before and after two headwalls peace planar, right-hand member wall bottom opens up standby stove gate, and standby door sealing is used in standby stove gate outside,
Spare gate opens up flame-observing hole, and left end wall bottom opens up left stove gate, and near right-hand member wall crown wall exhaust opening is arranged, and furnace wall and ground are enclosed
Into tunnel-like furnace chamber, furnace chamber includes top vault area and bottom cuboid area, vault area bottom surface and cuboid area top surface weight
Close, cuboid head of district side level and parallel with both walls in front and back, cuboid sector width and furnace chamber width are equal, cuboid area wraps
Coal bed area is included, coal bed area is in rectangular-shape, and coal bed area width height and cuboid area width are highly equal respectively, coal bed area height
600mm, the folded full cellular square honeycomb briquette in coal bed area, it is characterised in that：Also include inverted L shape door, inverted L shape door includes vertical plate and level
Plate, vertical plate top margin and the left broadside of level board it is equal, vertical plate top margin and the left broadside of level board are welded to connect, and two plates connect and cause
Vertical plate and level board are integrally presented L-shaped, and apart from left end wall 150mm within the walls, inverted L shape door vertical plate is from outer for coal bed area left side
The left stove gate of side seal, inverted L shape door vertical plate is parallel with coal bed area left side, and vertical plate center opens up fresh air inlet and supplies combustion air
Flow through, inverted L shape door level board is parallel with ground, level board puts in furnace chamber 150mm to the right broadside of level board and coal bed area left end
Face top width side is completely superposed, and coal bed area, left stove gate and inverted L shape door vertical plate three width are highly respectively equal, inverted L shape door, front
Afterwards both walls, ground and coal bed area left side surround static pressure area, and in furnace chamber, coal bed area right side is apart from right-hand member wall in static pressure area
More than internal face 75mm, the folded full square honeycomb briquette in coal bed area, square honeycomb briquette in cellular, each gas channel central axis of square honeycomb briquette and ground
And in front and back both walls are parallel, adjacent two square honeycomb briquette in left and right each gas channel correspondence is connected, square honeycomb briquette and left and right phase in front and back up and down
Adjacent square honeycomb briquette and in front and back equal gapless between both walls, the numerous square honeycomb briquette top surfaces in coal bed area top layer position are in same level
On face, coal bed area right side center is stacked 1～3 piece of vehement red moulded coal, vehement red moulded coal for burn and with coal bed area square coal facies
Same square honeycomb briquette.
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| CN201710106454.0A CN106642675B (en) | 2017-02-27 | 2017-02-27 | Reverse burning tunnel furnace for intensive flue-cured tobacco |
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| CN201710106454.0A CN106642675B (en) | 2017-02-27 | 2017-02-27 | Reverse burning tunnel furnace for intensive flue-cured tobacco |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253408A (en) * | 2018-03-05 | 2018-07-06 | 中南大学 | Fin Filter Tuber For Clean Coal is counter heats wind furnace for band |
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| CN106360800A (en) * | 2016-08-31 | 2017-02-01 | 湖南省烟草公司长沙市公司宁乡县分公司 | Bulk tobacco curing reverse-combustion hot-blast furnace and application method thereof |
| CN206478853U (en) * | 2017-02-27 | 2017-09-08 | 中南大学 | Intensive flue-cured tobacco burns continuous tunnel furnace with anti- |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2722065A1 (en) * | 1976-05-25 | 1977-12-15 | Asea Ab | OVEN FOR ISOSTATIC HOT PRESSING |
| CN1122441A (en) * | 1994-04-29 | 1996-05-15 | 屈筠画 | Briquet combusting reverberate furnace |
| CN201174966Y (en) * | 2008-04-16 | 2009-01-07 | 韩志伟 | Reverse-baking type cured tobacco furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108253408A (en) * | 2018-03-05 | 2018-07-06 | 中南大学 | Fin Filter Tuber For Clean Coal is counter heats wind furnace for band |
| CN108253408B (en) * | 2018-03-05 | 2022-12-06 | 中南大学 | Clean coal back-burning hot-blast stove with fins |
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| CN106642675B (en) | 2022-07-19 |
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