CN1076018A

CN1076018A - The continuously carbonizing vertical furnace of inside and outside heating

Info

Publication number: CN1076018A
Application number: CN 92113190
Authority: CN
Inventors: 刘卫林; 赵光宇
Original assignee: DATONG COAL INST
Current assignee: DATONG COAL INST
Priority date: 1992-11-20
Filing date: 1992-11-20
Publication date: 1993-09-08

Abstract

The present invention is a kind of coal production ferroalloy that is used for, special-purpose Jiao of calcium carbide and bituminous coal are produced the calciner of carbon material, by carbonization chamber, one, secondary combustion chamber, air preheating chamber, advance, discharging opening, compositions such as scraper plate conveyer, it is characterized in that being provided with in the body of heater charing system of two cover symmetries, carbonization chamber adopts in the segmentation, outer heating, epimere is outer heating, hypomere is the continuously carbonizing operation of interior heating, compared with prior art have and reduce investment outlay 50-90%, save coke quenching water 70%, advantages such as seepage are discharged in pollution-free source, and environment protecting and working environment are good.

Description

The continuously carbonizing vertical furnace of inside and outside heating

The present invention is a kind of calciner that coal production ferroalloy, special-purpose Jiao of calcium carbide and anthracite are produced carbon material that is used for.

The type of furnace that known carbon material is used for calcined anthracite has pot type burner, rotary kiln, interior hot shaft furnace etc.; What be used for that weakly caking coal or dross coal produce special focus ferroalloy has the continuous upright furnace of external-heat, external-heat batch (-type) upright furnace, interior hot batch (-type) side stove, a tunnel cave, down-draft kiln, local method heap roasting etc., the ubiquitous problem of the above-mentioned various type of furnaces is, external-heat type of furnace cost height, and production efficiency is low; The internal combustion degree is low, and most smoke contaminations are serious, and the quenching water consumption is between 1.5-2 ton water/ton Jiao, and is most with acid-bearing wastewater discharging seepage, causes serious environmental to pollute.

The present invention overcomes the deficiencies in the prior art part and provides a kind of carbonization chamber continuous inside and outside heating, and product recovery rate height, quality are good, the carbonizing vertical furnace that cost is low, power consumption is little, pollution-free, sealing, quenching are carried out simultaneously.

The present invention adopts following scheme to realize, the continuously carbonizing vertical furnace of inside and outside heating comprises being provided with carbonization chamber the body of heater of combustion chamber, fume extractor, charging aperture is located at the top of body of heater, discharging opening is located at the below of body of heater, it is characterized in that, is provided with the charing system of two cover symmetries in the body of heater, give the hot cell by carbonization chamber, first and second combustion chamber, air, gas passage is formed, and carbonization chamber adopts the inside and outside heating of segmentation, epimere H ₁Be outer heating, hypomere H ₂Interior heating, epimere H ₁Two walls be built into the one-sided rowlock wall of thin-walled, hypomere H by quarl ₂Two walls build the combustion gas access ramp by the quarl that has access ramp, the centre of two carbonization chambers is provided with secondary combustion chamber, the air that both sides are provided with the primary zone gives the hot cell, the primary zone communicates with carbonization chamber by gas passage, the primary zone gives the hot cell by hot-air channel and air again and communicates, the top of carbonization chamber respectively is provided with two charging apertures, the discharging opening that is located at the carbonization chamber bottom places the top that is installed in the scraper plate conveyer in the water sealed tank, and in the immersion water, one end of scraper plate conveyer places in the water sealed tank, and the other end stretches out outside the water sealed tank.

Discharging of the present invention is finished in water sealed tank with the output operation simultaneously, has reached the purpose of anti-peroxidating of sealing and quenching, has improved coal tar quality, and the quenching water consumption only accounts for the 1/3-1/4 of the general type of furnace, and seepage is discharged in pollution-free source.

Secondary combustion chamber in the body of heater of the present invention is divided into upper and lower two-layer, and the centre of dividing plate has the coal gas rise hole, on two side partitions two cover plates is housed, and has ash removing opening on the upper strata sidewall of secondary combustion chamber.

But the present invention's multi-use, when reclaiming coal gas, cover plate is added a cover the coal gas rise hole in the middle of the dividing plate, the air inlet of secondary combustion chamber and coal gas are extracted pipe out and are joined, and extract the back shunting out, and a part enters the ash removing opening in the cover plate outside, for the burning of secondary combustion chamber, another part is outer after treatment to be supplied.

Description of drawings:

Fig. 1 is the B-B body of heater transverse sectional view of Fig. 3.

Fig. 2 is the C-C body of heater secondary combustion chamber longitudinal sectional view of Fig. 3.

Fig. 3 is the I-I cross-sectional view of Fig. 1.

Fig. 4 is the A-A profile of Fig. 1.

Label declaration:

1, charging aperture 2, carbonization chamber 3, discharging opening 4, scraper plate conveyer 5, water sealed tank 6, primary zone 7, air give hot cell 8, secondary combustion chamber 9, primary air import 10, auxiliary air import 11, ash removing opening 12, gas passage 13, main chimney flue 14, chimney 15, hot-air channel 16, combustion gas access ramp H ₁Epimere, H ₂Hypomere 17, the one-sided rowlock wall 18 of thin-walled, cover plate

With reference to the accompanying drawings embodiment is further described, the present invention is used for that dross coal or weak viscosity fritter bituminous coal are produced ferroalloy, calcium carbide is special-purpose burnt, or anthracite is produced a kind of calciner of carbon material, the granularity of coal is the bulk of 15-100mm, mention furnace top bin by elevator, constantly enter carbonization chamber 2, in carbonization chamber 2, become coke after process destructive distillation in the 6-8 hour calcining by charging aperture 1, fall on the defeated discharging machine 4 of scraper plate from bottom discharging opening 3, after water sealed tank 5 is cold, constantly discharged.The flow direction tissue of diabatic process of the present invention and all gases is determined by the structure in the body of heater, be provided with the charing system of two cover symmetries in the body of heater, by carbonization chamber 2, first and

second combustion chamber

6,8, air gives hot cell 7, compositions such as gas passage 12, main chimney flue 13, chimney 14, carbonization chamber 2 adopts the inside and outside heating of segmentation, epimere H ₁Be outer heating, hypomere H ₂Be interior heating, epimere H ₁Two walls be built into the one-sided rowlock wall 17 of thin-walled, hypomere H by quarl ₂Two walls build combustion gas access ramp 16 by the quarl that has access ramp, the centre of two carbonization chambers 2 is provided with secondary combustion chamber 8, both sides are provided with primary zone 6 and air gives hot cell 7, primary zone 6 communicates with carbonization chamber 2 by gas passage 12, primary zone 6 gives hot cell 7 by hot-air channel 15 and air again and communicates, during operation, at first with epimere H ₁The primary zone 6 of carbonization chamber 2 both sides and the heat energy in the secondary combustion chamber 8 are transmitted in the carbonization chamber 2 by the one-sided rowlock wall 17 of the thin-walled of carbonization chamber 2 both sides, after coal cinder inside making is heated destructive distillation, produce a large amount of coal gas, part coal gas enters primary zone 6 and primary air import 9 from gas passage 12 and gives the hot-air of coming in from hot-air channel 15 in hot cell 7 through air and meet after the burning, flows to H downwards ₂Section is crossed carbonization chamber 2 from the combustion gas access ramp, heat is directly passed to material makes it fully calcined, and newborn coal gas enters secondary combustion chamber 8 in the lump in the post combusted gases, meets with the cold air of being come in by auxiliary air, and fully burning is after main chimney flue 13 enters chimney 14 emptyings.

Can press said process production fully for calcined anthracite,,, with good conditionsily can reclaim unnecessary coal gas, handle that the back is outer to be supplied because the volatile content height has the lot of energy waste like this if when being raw material with bituminous coal.At this moment, only need cover plate 18 is pushed, the rise hole at secondary combustion chamber middle part is covered completely, the auxiliary air air inlet 10 of secondary combustion chamber 8 is extracted pipe out with the coal gas of gas recovery system and is joined, extract the back shunting out, ash removing opening 11 participation second-time burning another part that a part is sent into cover plate 18 outsides can supply outward after treatment.Reach the purpose of multi-use.

This stove has passed through industrial experiment, and by being that raw material is produced special focus ferroalloy and calculated with sticking bituminous coal a little less than Datong District Jurassic Period, separate unit stove daily output 30-40 ton Jiao produces 10000 tons of Jiao per year.Its coking yield is 70%; 0.5 ton of the burnt water consumption of ton, 1150 ℃ of the highest furnace temperature.Through economizing the test of environmental monitoring central station, conclusion is: 1, the flue dust lingemann blackness is lower than the standard in the class area of GB9078-88, SO ₂, NOX, CO be lower than GBJ ₄-73 standard; 2, water does not efflux non-leakagely during this stove quenching, does not produce that water pollutes, environmental protection effect is good.

The present invention compared with prior art has the following advantages:

1, economizes on coal one ton of comparable local method of Jiao of every production and full internal heat type stove conservation coal 240kg.

2, the production efficiency height, reduce investment outlay, this stove is than present other general stove 50-90% that can reduce investment outlay.

3, economize on water, compare with other type of furnace with local method and can save coke quenching water 70%.

4, save floor space, save occupation of land more than 90% than local method and other horizontal type of furnace.

5, save manpower, because fluidization continuous-output machine tool degree is higher, the per tour of separate unit stove only needs 2,3 people operation.

6, enlarged raw material resources, local method and tunnel cave, down-draft kiln etc. all need stand through being the coarse coal raw material more than 200, and the present invention is only with the upright footpath of 15-100mm small coal, thereby have enlarged raw material resources.

7, adaptability is strong, and the one, raw material is applicable to that bituminous coal is to coal such as weak viscosity bituminous coal: the 2nd, but both mechanization production; Also can change total man worker operation under the condition of power source into being provided with; The 3rd, both can the coproduction of many supporting extensive coke coal gas, also can lack under the condition of water the separate unit miniaturization and produce at well head.

8, environment protecting is good, and the present invention does not have that waste residue, waste water efflux, seepage; Flue gas has been removed most of harmful components through fully burning, thereby environment protecting is good, is a kind of desirable calciner.

Claims

1, a kind of inside and outside heating continuously carbonizing vertical furnace, comprise the body of heater that is provided with carbonization chamber, combustion chamber, fume extractor, charging aperture is located at the top of body of heater, discharging opening is located at the below of body of heater, it is characterized in that being provided with in the body of heater charing system of two cover symmetries, by carbonization chamber 2, first and second combustion chamber 6,8, air gives the hot cell, gas passage 12, carbonization chamber 2 adopts the inside and outside heating of segmentation, epimere H ₁Be outer heating, hypomere H ₂Be interior heating, epimere H ₁Two walls be built into the one-sided rowlock wall 17 of thin-walled, hypomere H by quarl ₂Two walls build combustion gas access ramp 16 by the quarl that has access ramp, the centre of two carbonization chambers 2 is provided with secondary combustion chamber 8, the air that both sides are provided with primary zone 6 gives hot cell 7, the primary zone communicates with carbonization chamber 2 by gas passage 12, primary zone 6 gives hot cell 7 by hot-air channel 15 and air again and communicates, two charging apertures 1 are respectively established at the top of carbonization chamber 2, the discharging opening 3 that is located at carbonization chamber 2 bottoms places the top that is installed in the scraper plate conveyer 4 in the water sealed tank 5, and in the immersion water, one end of scraper plate conveyer 4 places in the water sealed tank 5, and the other end stretches out outside the water sealed tank 5.

2, carbonizing vertical furnace according to claim 1, it is characterized in that the secondary combustion chamber 8 minutes in the body of heater is upper and lower two-layer, the centre of dividing plate is provided with the coal gas rise hole, and two cover plates 18 is housed on two side partitions, has ash removing opening 11 on the upper strata sidewall of secondary combustion chamber 8.

3, according to claim 1,2 described carbonizing vertical furnaces, it is characterized in that when reclaiming coal gas, cover plate is added a cover the coal gas rise hole in the middle of the dividing plate, the auxiliary air import 10 and the coal gas exhaust tube of secondary combustion chamber 8 join, extract the back shunting out, a part is sent into the ash removing opening in cover plate 18 outsides, and another part is handled the outer confession in back.