CN204644266U - The full circulation carbonization furnace that a kind of destructive distillation is lower-grade metamorphic bituminous - Google Patents
The full circulation carbonization furnace that a kind of destructive distillation is lower-grade metamorphic bituminous Download PDFInfo
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- CN204644266U CN204644266U CN201520177695.0U CN201520177695U CN204644266U CN 204644266 U CN204644266 U CN 204644266U CN 201520177695 U CN201520177695 U CN 201520177695U CN 204644266 U CN204644266 U CN 204644266U
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Abstract
The utility model provides the lower-grade metamorphic bituminous full circulation carbonization furnace of a kind of destructive distillation, gas retort body of heater is divided into from top to bottom successively: preheating section, retort section and cooling section, the top of gas retort body of heater is provided with the auxiliary coal bunker be communicated with preheating section, and the upper end of auxiliary coal bunker is connected with raw coal warehouse by the electricity push-pull valve that surges; Cooling section is connected with multiple coke discharge box, the lower end of coke discharge box is connected with star-shaped discharge valve, cooling section and coke discharge box inside are interspersed with heat exchange gas line, cooling coal gas enters from the heat exchange gas line of coke discharge box bottom and absorbs sensible heat with reverse contact of red-hot blue charcoal, draws outside stove after heat exchange completes through pipeline; The bottom of retort section is provided with thermal cycling gas inlet pipe, and retort section is also provided with the dispersed thermal cycling coal gas gas distribution archway to each coke discharge box of blue charcoal destructive distillation completed.The utility model adopts raw coal directly to contact destructive distillation with thermal cycling coal gas, the high and heat transfer of thermo-efficiency soon, and to solve in current industry lower-grade metamorphic bituminous destructive distillation produce the low disadvantage of caloric power of gas.
Description
Technical field
The utility model relates to low-rank coal processing technique field, is specifically related to the full circulation carbonization furnace that a kind of destructive distillation is lower-grade metamorphic bituminous.
Background technology
Classify according to the depth degree of incoalation, raw coal can be divided into low-rank coal, scala media coal and high-order coal.Low-rank coal mainly comprises brown coal and lower-grade metamorphic bituminous (long-flame coal, non caking coal, weakly caking coal).China has found out that low-rank coal resource reserve is 4664.78 × 10
8t(is wherein lower-grade metamorphic bituminous has found out that resource reserve is 3330.09 × 10
8t), account for that the 45.68%(of national coal resources total amount is wherein lower-grade metamorphic bituminous accounts for 32.61% of national coal resources total amount), account for that the 63.06%(of non-coking coal is wherein lower-grade metamorphic bituminous accounts for 45.01% of non-coking coal).
The lower-grade metamorphic bituminous middle major part of China is directly burnt as steam coal, and small part is as destructive gasifying raw material, and the solid phase prod obtained is called blue charcoal.Blue charcoal, also known as semicoke, is a kind of novel carbon material, has the characteristic that fixed carbon is high, ratio resistance is high, chemically reactive is high, low containing ash, aluminium is low, sulphur is low, phosphorus is low, partly can replace coke (metallurgical coke) and for industries such as chemical industry, smelting, gas making.
Utilize lower-grade metamorphic bituminous destructive distillation to adopt internal thermal upright carbonization furnace destructive distillation at present, the industrial application type of furnace has the SH series of Shaanxi company limited of metallurgical design and research institute, the ZNZL series of the SJ series of river, Factory, Shenmu, Shanxi county three Coal Chemical Industry limited liability company development and Anshan Research Inst. of Heat Energy, China Iron & Steel Group's design (Wang Yongjun is published in " chemical industry " September the 27th in 2009 volume the 9th phase 23-26 page paper report, can introduce see this literary composition by other type of furnace and technique.）。These three kinds of type of furnace principle of heatings are substantially similar, and " high-temp waste gas " that produce by blasting air and gas-fired in stove provides heat destructive distillation raw coal, derives outside stove after carbonization gas mixes with " high-temp waste gas ", through washing, purifying treatment recovery coal tar and coal gas.The coal gas of processing contains a large amount of useless component, calorific value is lower, and nitrogen and dioxide component summation are up to about 50%, and caloric power of gas is low.Cause follow-up gas cleaning system huge thus, and downstream coal gas field of comprehensive utilization is limited or investment strengthens.And improve existing distillation apparatus, raising coal gas active principle is significant to the comprehensive utilization of follow-up coal gas.
Utility model content
The purpose of this utility model overcomes above-mentioned problems of the prior art, provides the full circulation carbonization furnace that a kind of low-temperature pyrolysis is lower-grade metamorphic bituminous, is intended to solve lower-grade metamorphic bituminous destructive distillation in current industry and produces the low disadvantage of caloric power of gas.
For achieving the above object, the full circulation carbonization furnace that the utility model provides a kind of low-temperature pyrolysis lower-grade metamorphic bituminous, its technical scheme is as follows: the full circulation carbonization furnace that a kind of destructive distillation is lower-grade metamorphic bituminous, comprise gas retort body of heater, described gas retort body of heater is divided into from top to bottom successively: preheating section, retort section and cooling section, the top of gas retort body of heater is provided with the auxiliary coal bunker be communicated with described preheating section, and the upper end of auxiliary coal bunker is connected with raw coal warehouse by the electricity push-pull valve that surges; Described cooling section is connected with multiple coke discharge box, and the lower end of described coke discharge box is connected with star-shaped discharge valve, and cooling section and coke discharge box inside are interspersed with heat exchange gas line; The bottom of retort section is provided with thermal cycling gas inlet pipe, and retort section is also provided with the dispersed thermal cycling coal gas gas distribution archway to each coke discharge box of blue charcoal destructive distillation completed.
The upper end of above-mentioned preheating section is provided with distributor, and this distributor top is provided with can by the effuser of gas retort coal gas sucking-off.
Be provided with the discharging point leading to gas retort body of heater preheating section in 4 places in above-mentioned auxiliary coal bunker, described distributor is located at the lower position that preheating section upper end is positioned at discharging point.
Above-mentioned auxiliary coal bunker is provided with Explosion-proof cap.
Above-mentioned preheating section, retort section and cooling section are equipped with the thermopair connecting outside temperature measuring equipment.
Above-mentioned thermal cycling coal gas gas distribution archway inside is provided with distribution plenum, and distribution plenum is provided with thermal cycling gas inlet and the air inlet port of thermal cycling gas inlet pipe.
Above-mentioned distribution plenum is provided with the thermopair connecting outside temperature measuring equipment.
The beneficial effects of the utility model: the utility model is provided with distributor at gas retort preheating section makes raw coal be uniformly distributed, and is provided with thermal cycling coal gas gas distribution archway, completes retort process in retort section inside; The blue charcoal waste heat that employing cooled coal gas recovery destructive distillation completes, as the raw material of thermal cycling coal gas, makes full use of waste heat.The utility model adopts raw coal directly to contact destructive distillation with thermal cycling coal gas, the high and heat transfer of thermo-efficiency soon, and to solve in current industry lower-grade metamorphic bituminous destructive distillation produce the low disadvantage of caloric power of gas.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: 100, raw coal warehouse; 110, electricity surges push-pull valve; 120, auxiliary coal bunker; 130, Explosion-proof cap; 200, effuser; 210, distributor; 220, gas retort body of heater; 230, thermopair; 240, thermal cycling coal gas gas distribution archway; 250, distribution plenum; 260, thermal cycling gas inlet; 270, air inlet port; 310, coke discharge box; 320, heat exchange gas line; 330, star-shaped discharge valve.
Embodiment
Embodiment 1:
As shown in Figure 1, the utility model provides the lower-grade metamorphic bituminous full circulation carbonization furnace of a kind of destructive distillation, comprise gas retort body of heater 220, change according to thermograde, gas retort body of heater 220 is divided into from top to bottom successively: preheating section, retort section and cooling section, the top of gas retort body of heater 220 is provided with the auxiliary coal bunker 120 be communicated with described preheating section, the upper end of auxiliary coal bunker 120 is connected with raw coal warehouse 100 by the electricity push-pull valve 110 that surges, regularly can open the electricity push-pull valve 110 that surges and carry out blanking, wherein auxiliary coal bunker 120 forms with gas retort body of heater 220 welded top; The object arranging auxiliary coal bunker 120 between raw coal warehouse 100 and gas retort body of heater 220 is fed in raw material for realizing sealing; Described cooling section is connected with multiple coke discharge box 310, the lower end of described coke discharge box 310 is connected with star-shaped discharge valve 330, cooling section and coke discharge box 310 inside are interspersed with heat exchange gas line (320), cooling coal gas enters from the heat exchange gas line of coke discharge box bottom and absorbs sensible heat with reverse contact of red-hot blue charcoal, draws outside stove after heat exchange completes through pipeline.The outlet of heat exchange gas line 320 is arranged on cooling section top, imbeds gas retort furnace wall inner, is connected after reserved flange with external pipe.
The bottom of retort section is provided with thermal cycling gas inlet pipe, retort section is also provided with the dispersed thermal cycling coal gas gas distribution archway 240 to each coke discharge box 310 of blue charcoal destructive distillation completed, this thermal cycling coal gas gas distribution archway 240 is provided with air inlet port, chevron shaped distributor is built at top by laying bricks or stones, is dispensed to by dried raw coal in each destructive distillation passage and completes destructive distillation with thermal cycling coal gas reverse heat-exchange.Described cooling section and coke discharge box internal layout have heat exchange gas line, and the reverse contact heat-exchanging of blue charcoal under arranging with retort section completes process of cooling, and cooled blue charcoal discharges out of the furnace through star-shaped discharge valve.
Embodiment 2:
On the basis of embodiment 1, the upper end of described preheating section is provided with distributor 210, and this distributor 210 top is provided with can by the effuser 200 of gas retort coal gas sucking-off.Be provided with the discharging point leading to gas retort body of heater preheating section in 4 places in described auxiliary coal bunker 120, described distributor 210 is located at the lower position that preheating section upper end is positioned at discharging point, and the effect of distributor is uniformly distributed the feed coal entering gas retort; Effuser can realize gas collection function; Distributor 210 is the herring-bone steel construction with welded steel plate, and distributor 210 inside is hollow structure, with negative pressure gas collection function, draws outside stove after effuser 200 and its welded top, reaches the object that will contain outside the coal gas sucking-off stove of tar; Described auxiliary coal bunker 120 is provided with Explosion-proof cap 130.Described preheating section, retort section and cooling section are equipped with the thermopair 230 connecting outside temperature measuring equipment.Described thermal cycling coal gas gas distribution archway 240 inside is provided with distribution plenum 250, distribution plenum 250 is provided with the thermal cycling gas inlet 260 of thermal cycling gas inlet pipe, after the pre-buried interface pipe in furnace wall place, pass through Flange joint with thermal cycling gas inlet pipe, air compartment body of wall is provided with heating gas air inlet port 270.Distribution plenum 250 is provided with the thermopair 230 connecting outside temperature measuring equipment.
Working process of the present utility model is as follows:
Sieve qualified feed coal (particle diameter is 10-30mm) and deliver to raw coal warehouse 100 through conveyor drive, enter auxiliary coal bunker 120 through the electricity push-pull valve 110 that surges, auxiliary coal bunker 120 is connected with gas retort 220, directly falls in gas retort 220;
Along with entering gas retort preheating section (temperature is below 300 DEG C) in feed coal dropping process, can not change in the character of this stage feed coal, mainly removing moisture and the gas of raw coal absorption.Less than 120 DEG C be coal dehydrate the stage; 120-300 DEG C is the CO adsorbed in coal
2, N
2deng gas desorption.Distributor 210 is set at preheating section top, with gas collection function.The raw coal fallen by coal store is on the one hand dispersed to gas retort preheating section; Distributor 210 is connected with furnace roof portion effuser 200 on the other hand, forms negative pressure coal gas is drawn gas retort 220 in this section.
Feed coal after preheating falls to retort section, and this section of temperature is 300-550 DEG C, based on the decomposition of coal, depolymerization, forms blue charcoal.Raw coal occurs to decompose and depolymerization reaction, generates the less gaseous component of a large amount of relative molecular masses (mainly CH
4, H
2, gas, the tar steam such as unsaturated hydrocarbons, these gaseous components are called a gas of pyrolysis) and polycondensation is blue charcoal.Gas retort 220 is provided with thermal cycling gas inlet 260 this section of bottom.When building gas retort 220 distribution plenum 250 by laying bricks or stones, pre-buried mouth-piece, pipeline surrounding adopts refractory castable to build by laying bricks or stones tight.
Blue charcoal is separated by the thermal cycling coal gas gas distribution archway 240 of bottom the cooling section entering bottom, this phase temperature is 100-550 DEG C, the blue charcoal heat exchange that cooled coal gas input tube 320 and destructive distillation that gas retort 220 bottom is provided with produce, cooled blue charcoal is discharged by the star-shaped discharge valve 330 of full circulation carbonization furnace bottom.
Gas retort bottom cooling section adopts indirect heat exchange to reclaim blue charcoal waste heat: cooling section and coke discharge box inside arrange heat exchange gas line, pass into cooled coal gas in tube side, walk blue charcoal between pipe, the cooled coal gas counter current contact in red-hot blue charcoal and tube side.
Heating gas after heat exchange is drawn outside stove on cooling section top, and a part causes gas retort external heating device as fuel, as thermal cyclic carrier coal gas after a part is heated.Thermal cyclic carrier gas inlet pipe to be connected with thermal cycling gas inlet 260 by flange and to enter thermal cycling coal gas gas distribution archway 240 in gas retort, the air inlet port 270 arranged on thermal cycling coal gas gas distribution archway 240 enters destructive distillation raw coal in gas retort, thermal cyclic carrier coal gas after heat exchange becomes coal gas with a gas and vapor permeation of pyrolysis, coal gas rises through destructive distillation layer, preliminary heating zone successively, derives deliver to gas cleaning system through effuser 200.
The blue charcoal waste heat that the utility model completes with cooled coal-gas recovering destructive distillation; The thermal barrier recycled using the coal gas after absorbing heat as gas retort on the other hand recycles, and efficiently solves the disadvantage that in current industry, lower-grade metamorphic bituminous destructive distillation production caloric power of gas is low.
The part do not described in detail in present embodiment belongs to the known conventional means of the industry, does not describe one by one here.More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (7)
1. the full circulation carbonization furnace that a destructive distillation is lower-grade metamorphic bituminous, comprise gas retort body of heater (220), it is characterized in that: described gas retort body of heater (220) is divided into from top to bottom successively: preheating section, retort section and cooling section, the top of gas retort body of heater (220) is provided with the auxiliary coal bunker (120) be communicated with described preheating section, and the upper end of auxiliary coal bunker (120) is connected with raw coal warehouse (100) by the electricity push-pull valve (110) that surges; Described cooling section is connected with multiple coke discharge box (310), and the lower end of described coke discharge box (310) is connected with star-shaped discharge valve (330), and cooling section and coke discharge box (310) inside are interspersed with heat exchange gas line (320); The bottom of retort section is provided with thermal cycling gas inlet pipe, and retort section is also provided with dispersed thermal cycling coal gas gas distribution archway (240) to each coke discharge box (310) of blue charcoal destructive distillation completed.
2. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 1 is lower-grade metamorphic bituminous, is characterized in that, the upper end of described preheating section is provided with distributor (210), and this distributor (210) top is provided with can by the effuser of gas retort coal gas sucking-off (200).
3. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 2 is lower-grade metamorphic bituminous, it is characterized in that, be provided with the discharging point leading to gas retort body of heater preheating section in 4 places in described auxiliary coal bunker (120), described distributor (210) is located at the lower position that preheating section upper end is positioned at discharging point.
4. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 1 is lower-grade metamorphic bituminous, is characterized in that, described auxiliary coal bunker (120) is provided with Explosion-proof cap (130).
5. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 1 is lower-grade metamorphic bituminous, is characterized in that, described preheating section, retort section and cooling section are equipped with the thermopair (230) connecting outside temperature measuring equipment.
6. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 1 is lower-grade metamorphic bituminous, it is characterized in that, described thermal cycling coal gas gas distribution archway (240) inside is provided with distribution plenum (250), and distribution plenum (250) is provided with thermal cycling gas inlet (260) and air inlet port (270).
7. the full circulation carbonization furnace that a kind of destructive distillation as claimed in claim 6 is lower-grade metamorphic bituminous, is characterized in that, described distribution plenum (250) is provided with the thermopair (230) connecting outside temperature measuring equipment.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107286969A (en) * | 2017-08-10 | 2017-10-24 | 榆林煤化工产业促进中心 | A kind of pyrolysis oven based on packed bed pulverized coal pyrolysis, pyrolysis installation and pyrolytic process |
| CN107513396A (en) * | 2017-08-31 | 2017-12-26 | 榆林煤化工产业促进中心 | A kind of fine coal drying oven dried based on packed bed and drying device and technique based on the drying oven |
| CN114231306A (en) * | 2021-12-15 | 2022-03-25 | 黄容 | Dust-proof dry distillation furnace capable of carrying out hot air drying on combustion raw materials for coking industry |
-
2015
- 2015-03-27 CN CN201520177695.0U patent/CN204644266U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107286969A (en) * | 2017-08-10 | 2017-10-24 | 榆林煤化工产业促进中心 | A kind of pyrolysis oven based on packed bed pulverized coal pyrolysis, pyrolysis installation and pyrolytic process |
| CN107513396A (en) * | 2017-08-31 | 2017-12-26 | 榆林煤化工产业促进中心 | A kind of fine coal drying oven dried based on packed bed and drying device and technique based on the drying oven |
| CN107513396B (en) * | 2017-08-31 | 2024-05-07 | 榆林煤化工产业促进中心 | Pulverized coal drying furnace based on packed bed drying and drying device and process based on drying furnace |
| CN114231306A (en) * | 2021-12-15 | 2022-03-25 | 黄容 | Dust-proof dry distillation furnace capable of carrying out hot air drying on combustion raw materials for coking industry |
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