CN1031888C - Cold pressing coked briquet baking and coking furnace - Google Patents
Cold pressing coked briquet baking and coking furnace Download PDFInfo
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- CN1031888C CN1031888C CN 92106492 CN92106492A CN1031888C CN 1031888 C CN1031888 C CN 1031888C CN 92106492 CN92106492 CN 92106492 CN 92106492 A CN92106492 A CN 92106492A CN 1031888 C CN1031888 C CN 1031888C
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Abstract
The present invention relates to a cold pressing coked briquette baking and coking furnace which is composed of a furnace body, briquet input and output devices and a furnace bed, wherein the furnace body is a horizontal type boiler having chain grates; the furnace bed is the chain grates; gas transmission channels, gas suction inlets and gas suction devices are arranged inside the chain grates; ignition arch height is from 0.8 to 1.3 meters, and angles are from 15 to 25 degrees; front arch height is from 2.5 to 3.5 meters, and back arch height is from 1.4 to 2.1 meters; the lower parts of water screen tubes of a furnace hearth are provided with fire-resisting covering layers. Productive efficiency of the present invention is increased by 7 to 12 times, and quality and energy saving are greatly improved. The present invention can be widely used for the baking and the coking of industrial cold pressing coked briquettes, such as chemical fertilizer, smelting, coal gas, etc.
Description
The present invention relates to cold pressing coked briquet baking and coking furnace, more particularly, is to be used for the cold pressing cold pressing coked briquet baking and coking furnace of close-burning coal briquette of high temperature carbonization roasting close-burning in industrial circles such as chemical fertilizer, gas maked coal, smelting or coal processing field.
In the domestic present little nitrogen fertilizer production, be main raw material mostly with the lime-carbonated coal balls.This is that the shaping raw material intensity of solidifying agent is higher with lime, is difficult for broken.But its ash increases, and fixed carbon reduces, and traffic capacity increases.In addition, also to build the lime production system of not theing least concerned in addition, invest bigger with nitrogen fertilizer production.Outside the delime carbonated coal balls, the source of coal briquette additives such as cement coal briquette, clear water coal rod, potter's clay coal briquette, clay coal briquette is not abundant, the cost height, and cold stability and thermostability are all poor.And the past is adopted soil
Coking needs 5～6 grades coking bituminous coal coking, and the coal restriction is big:
Stove disperses Gan Evaporated liberated heat to be difficult for reclaiming, and thermal waste is big, and cost is also high.
In view of the foregoing.In recent years, people are exploring the production technique and the production unit thereof of close-burning coal briquette always.Close-burning coal briquette system pneumatolytic part is high, and coal adaptability is wide, have cold pressing, the branch of hot pressing.Hot pressing close-burning coal briquette complex process, the cost height.The close-burning coal briquette technology of colding pressing is fairly simple.It is to be basic coal with hard coal, and bituminous coal is coal blending, adds the water puddle according to a certain ratio, pulverizes moulding.But the close-burning technology of its Gao Wen Gan Evaporated charing is most vertical with fixed bed, fluidised bed then
Stove carries out." anthracite fine coal system formed coke and be used for the test of chemical fertilizer gas-making " as people such as the Cao Yu people of Shanxi Devel. Centre of Coal Processing and Conversion Technology is exactly to become formed coke through high temperature carbonization in the airtight side of S87 type 20 hole vertical types is opened the door the close-burning stoving oven.It is actually the vertical of the interior hot kind of a kind of external combustion
Stove.These are vertical
Stove adopts the vertical structure of fixed bed, fluidised bed, and bed thickness goes out under enterprising generally between 3～5 meters.Therefore, no matter stove is square, garden shape or flat, following common drawback is all arranged: the bed of material is blocked up, and furnace temperature is wayward; The furnace temperature inequality, easily scabbing in the furnace wall, causes the discharging difficulty; It is not saturating to burn, focal sphere quality inequality; It is broken serious to go into the stove green-ball, and balling ratio is low; Draw badly, the close-burning time is long, and production efficiency is low; Labour intensity is big, and floor space is big, and stove is low work-ing life, and calorific loss is big, recovery is few.
Purpose of the present invention, just be to overcome above-mentioned shortcoming and defect, provide a kind of with horizontal, immovable bed, movable bed for its primary structure characteristics, the vertical motion of the bed of material is changed into the vertical equity motion, the width of cloth of close-burning coal briquette in stove of colding pressing penetrated to be heated to be increased greatly, fire box temperature can be stablized control, the close-burning time shortens greatly, production efficiency improves a lot, and furnace temperature is even, and the focal sphere quality improves a lot, green-ball is difficult for broken, the balling ratio height, heat can be recycled, the tangible cold pressing coked briquet baking and coking furnace of energy-saving effect.
In order to achieve the above object, cold pressing coked briquet baking and coking furnace of the present invention is made of body of heater, the close-burning siege of losing device and ball-sending device and being installed in the body of heater that is installed on the body of heater.Body of heater of the present invention is a forward chain grate boiler, and the close-burning siege is traveling-grate stoker.A chain fire-gate end is installed with input air to cool off chain fire-gate gas distribution channel, and suction opening and getter device are installed in the middle of the other end.Getter device can be with common induced draft fan.
The present invention adopts horizontal chained furnace grate as body of heater, with its traveling-grate stoker as the close-burning siege.During the roasting close-burning, the coal briquette of colding pressing is transported on the traveling-grate stoker from the device of losing.The device of losing comprises belt lose machine, stream sieve, the bucket and regulate mechanisms such as flashboard of losing.The belt machine of the losing coal briquette of will colding pressing is delivered on the stream sieve.Under stream symbol the ball ballast screen, with the complete coal briquette of the colding pressing bucket of losing with fragmentation.Regulate flashboard and be used to regulate, control the piling height that is delivered to the coal briquette of colding pressing on the traveling-grate stoker.The traveling-grate stoker longitudinal motion that circulates from front to back, the coal briquette of colding pressing is just become the close-burning coal briquette by roasting, high temperature carbonization close-burning on traveling-grate stoker.Common chain grate boiler uses diffusing coal, and fire box temperature is not high enough.For promoting the perfect combustion of diffusing coal, improve thermo-efficiency, five, six plenum chambers are arranged in the traveling-grate stoker.Gas blower is sent into wind by plenum chamber, enter burner hearth through traveling-grate stoker, makes the diffusing coal perfect combustion of traveling-grate stoker top.The present invention closes the plenum chamber major part in the traveling-grate stoker, and one that only stays front end as suction opening, and has installed getter device additional at this.The present invention again at the chain fire-gate the other end device gas distribution channel.When getter device when the front end suction opening siphons away air, the outer air of stove enters from gas distribution channel, is sucked out from suction opening through in the middle of the traveling-grate stoker.In this course, the traveling-grate stoker cooling that is cooled makes the traveling-grate stoker can life-time service.Otherwise a large amount of heats that the coal briquette of colding pressing in roasting close-burning process is emitted make traveling-grate stoker overheated, will shorten its work-ing life greatly.
It is 15～25 ° that chain grate boiler body of heater of the present invention has angle, and high-end is 0.8～1.3 meter the arch that ignites, high 2.5～3.5 meters face arch and high 1.4～2.1 meters rear arch.The arch arch of this structure can make the combustion chamber have the most rational shape, and the roasting close-burning process of the coal briquette that quickens to cold pressing makes the present invention have higher economical efficiency.Angle is 15～25 °, and high-end is that 0.8～1.3 meter the arch that ignites can reflecting heat be given the fire area, oven dry, the ignition process of the coal briquette that quickens newly to advance to cold pressing.High 2.5～3.5 meters face arch and high 1.4～2.1 meters rear arch are formed the throat of combustion chamber jointly, with the prolong smoke flow process, are beneficial to inflammable gas and fully burn, and keep the temperature of fuel bed, and rear arch then can keep the required temperature of roasting close-burning ending phase; Also flame can be pushed the higher middle part of rear portion flue gas guiding temperature to the place ahead, promote the mixed firing of inflammable gas, the coal briquette that helps newly to cold pressing ignites.The arch and the length of face arch of igniting and be 0.2～0.4 times of edge lengths on the traveling-grate stoker.The length of rear arch is 0.4～0.6 times of edge lengths on the traveling-grate stoker.
In order further to improve the temperature of firing space, to quicken to cold pressing the coked process of coal briquette roasting, furnace temperature is stablized be controlled at 950～1050 ℃, water-cooling wall pipe of burner hearth of the present invention bottom has high 3～4 meters refractory materials overcoat.With the bottom of the topped water wall tube of refractory materials, prevented that water wall tube from too much absorbing heat, thereby improved furnace temperature.
The coal briquette static relatively motion on moving traveling-grate stoker in cold pressing coked briquet baking and coking furnace of the present invention of colding pressing, drying, Hui Fa Gan Evaporated then are carbonized.Liberated heat then is recovered generation steam in this course, and energy-saving effect is very remarkable.The close-burning coal briquette of colding pressing is discharged from from ball-sending device at last.
In addition, ball-sending device of the present invention also is furnished with by building the dry quenching(of coke) device that tight ball outlet channel and quenching blower fan constitute by laying bricks or stones.General body of heater ball outlet channel is built imprecision by laying bricks or stones, and oxygen level is up to more than 5% in the exhaust gas.The high temperature close-burning coal briquette that produces in the stove contacts the gas cyaniding burning once coming out of the stove.Therefore, add water cooling.Like this, both lose the carbon in the close-burning coal briquette, polluted environment again.The dry quenching(of coke) device ball outlet channel of ball-sending device of the present invention is built by laying bricks or stones tightly, and cool off with the quenching blower fan ball outlet channel outside.Oxygen level is reduced to below 3% in the flue gas, has realized dry quenching(of coke), without water cooling.Like this, the latent heat before recyclable close-burning coal briquette is come out of the stove, close-burning coal briquette per ton reclaims heat can produce 0.3 ton of steam.Simultaneously, oxidizing fire not after the close-burning coal briquette is come out of the stove has alleviated environmental pollution greatly.
The task of cold pressing coked briquet baking and coking furnace of the present invention comes to this and finishes.
The invention provides a kind of cold pressing coked briquet baking and coking furnace of horizontal, movable bed, immovable bed, its changes into the transverse horizontal motion to the vertical motion of coal briquette of colding pressing, and the quality of the close-burning coal briquette of colding pressing, goes out ball rate, productivity, energy-saving effect and all improves a lot.Vertical with the past
Stove compares, because fire box temperature can be stablized and be controlled between 950～1050 ℃, the close-burning time foreshortened to 1.5 hours by 12～20 hours, and production efficiency has improved 7～12 times.Compare with the lime-carbonated coal balls in past, use the fixed carbon of the close-burning coal briquette of colding pressing of the present invention's production to improve 37～51%, fugitive constituent is reduced to 20～26% of the past, and ash has reduced by 25～30%, intensity has improved 1/4th to 1/3rd, and quality improves greatly.Coal saving rate can reach 10～18%.The present invention can make balling ratio bring up to 80～85% by 30～50% of the past.In addition, there is not the phenomenon that scabs in the stove in the present invention, can keep continuous production for a long time.The present invention can be widely used in the roasting close-burning technology of the close-burning coal briquette of colding pressing in the industry such as chemical fertilizer, gas maked coal, smelting, coal processing.
Below in conjunction with embodiment and accompanying drawing thereof the present invention is done further narration.
Fig. 1 is the structural representation of cold pressing coked briquet baking and coking furnace embodiment 1 of the present invention.
Fig. 2 is the structural representation of embodiment 1 traveling-grate stoker close-burning siege and gas distribution channel, suction opening.
Among Fig. 1, the embodiment of the invention 1 is by body of heater 1, and the lose device 2 and ball-sending device 3 and close-burning siege 4 that are installed on the body of heater 1 constitute.Body of heater 1 is horizontal chained furnace grate body of heater, and close-burning siege 4 is a traveling-grate stoker.One end of traveling-grate stoker 4 is being installed gas distribution channel 5, and suction opening 6 and getter device 7 are installed in the middle of the other end.Getter device 7 is common induced draft fans.
It is 25 ° that chain grate boiler body of heater 1 has angle, and high-end is 1.3 meters ignite arch 8, high 2.5 meters face arch 9 and high 1.9 meters rear arch 10.Water-cooling wall pipe of burner hearth 11 bottoms have high 3.5 meters refractory materials overcoat 12.Face arch and ignite arch length overall and rear arch length are respectively 0.3 times and 0.5 times of traveling-grate stoker length.
Among Fig. 2, an end of the traveling-grate stoker close-burning siege 4 of embodiment 1 is being installed gas distribution channel 5, in the middle of the other end suction opening 6 is installed, and all the other plenum chambers 12 are closed.Lose device 2 by belt lose machine 13, stream sieve 14, the bucket 15 and regulate flashboard 16 and constitute of losing, regulate the piling height that flashboard 16 can be regulated the coal briquette 17 of colding pressing on the coke oven bed 4.
Embodiment 1 production efficiency improves 10 times, and the close-burning coal briquette fixed carbon of colding pressing improves 40% more in the past, and ash reduces by 27%.The balling ratio of product be increased to 85% it can be widely used in colding pressing during the roasting close-burning of close-burning coal briquette produces.
Embodiment 2: a kind of cold pressing coked briquet baking and coking furnace.Its body of heater is the chain grate boiler body of heater, and the close-burning siege is a traveling-grate stoker.Its body of heater have angle be 15 °, high-end be 0.8 meter the arch that ignites, high 3.5 meters face arch, high 1.4 meters rear arch and high 3 meters refractory materials overcoat.Face arch and ignite arch length overall and rear arch length are respectively 0.2 times and 0.6 times of traveling-grate stoker length.All the other structures are with embodiment 1.Embodiment 2 production efficiencys improve 7 times, and furnace temperature can be stablized and is controlled between 950～1050 ℃.The fixed carbon of product improves 37%, and fugitive constituent is reduced to 20% of the past, and ash has reduced by 25%, and intensity has improved 1/4th, and coal saving rate can reach 10%, and balling ratio brings up to 80%.
Embodiment 3: a kind of cold pressing coked briquet baking and coking furnace.Its body of heater have angle be 19 ° high-end be 1.1 meters the arch that ignites, high 3 meters face arch, high 2.1 meters rear arch and high 4 meters refractory materials overcoat.Face arch and ignite arch length overall and rear arch length are respectively 0.4 times and 0.4 times of traveling-grate stoker length.All the other structures are with embodiment 1.Embodiment 3 production efficiencys improve 12 times, and furnace temperature can be stablized and is controlled between 950～1050 ℃.The fixed carbon of product improves 51% fugitive constituent and is reduced to 26% of the past, and ash has reduced by 30%, and intensity has improved 1/3rd, and coal saving rate can reach 18%, and balling ratio brings up to 83%.
Claims (2)
1, a kind of by body of heater, be installed in lose device and ball-sending device on the body of heater, and be installed in the cold pressing coked briquet baking and coking furnace that the close-burning siege in the body of heater is constituted, it is characterized in that said body of heater is horizontal chained furnace grate, the close-burning siege is the traveling-grate stoker of longitudinal motion, a chain fire-gate end is being installed input air to cool off chain fire-gate gas distribution channel, suction opening and getter device are installed in the middle of the other end, it is 15～25 ° that the chain grate boiler body of heater has angle, high-end is 0.8～1.3 meter the arch that ignites, high 2.5～3.5 meters face arch and high 1.4～2.1 meters rear arch, the length overall of ignite arch and face arch, the length of rear arch is respectively 0.2～0.4 times and 0.4～0.6 times of edge lengths on the traveling-grate stoker.
2,, it is characterized in that the water-cooling wall pipe of burner hearth bottom of said chain grate boiler body of heater has high 3～4 meters refractory materials overcoat according to claim 1 or 2 described cold pressing coked briquet baking and coking furnaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106492 CN1031888C (en) | 1992-04-30 | 1992-04-30 | Cold pressing coked briquet baking and coking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106492 CN1031888C (en) | 1992-04-30 | 1992-04-30 | Cold pressing coked briquet baking and coking furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1066867A CN1066867A (en) | 1992-12-09 |
| CN1031888C true CN1031888C (en) | 1996-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106492 Expired - Fee Related CN1031888C (en) | 1992-04-30 | 1992-04-30 | Cold pressing coked briquet baking and coking furnace |
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| Country | Link |
|---|---|
| CN (1) | CN1031888C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590362C (en) * | 2006-08-25 | 2010-02-17 | 河南大学 | Composite combustion boiler and composite combustion method thereof |
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1992
- 1992-04-30 CN CN 92106492 patent/CN1031888C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1066867A (en) | 1992-12-09 |
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