CN108795459A - A kind of dry coke quenching coupling smalls pyrolytic process and system - Google Patents
A kind of dry coke quenching coupling smalls pyrolytic process and system Download PDFInfo
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- CN108795459A CN108795459A CN201810805702.5A CN201810805702A CN108795459A CN 108795459 A CN108795459 A CN 108795459A CN 201810805702 A CN201810805702 A CN 201810805702A CN 108795459 A CN108795459 A CN 108795459A
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- coke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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Abstract
A kind of dry coke quenching coupling smalls pyrolytic process of present invention offer and system, dry breath coke is carried out to red coke using the burnt cooling device of ring type breath and is pyrolyzed with small beans to not gluing smalls, smalls will not first be glued and spread and cease burnt cooling device bottom into ring type, the red coke that coke oven is produced cannot be covered in viscously on smalls again, finally the small beans being pyrolyzed in advance is covered on red coke, coal pyrolysis is carried out using the sensible heat of red coke, generates a large amount of high temperature raw coke oven gas, while by red burnt cooling down.The present invention makes coke quality significantly improve in the way of dry coke quenching, improves the mechanical stability of metallurgical coke, improves the uniformity of coke lumpiness, while reducing the discharge of harmful substance, protects environment.The sensible heat of red coke is utilized, fully exchanges heat pyrolysis with not viscous smalls, the small beans of addition, to generate a large amount of coal gas.So that thermal energy is made full use of and generate coal gas, having saved the energy reduces cost.Condensate recycling device condensing recovery coal tar is utilized, and exports and is supplied outside purification coal gas.
Description
Technical field
The present invention relates to coal chemical industry and coal sub-prime sublevel technical fields, and in particular to a kind of dry coke quenching coupling smalls pyrolysis
Technique and system.
Background technology
Chinese coal reserves account accounts for the 12% of worldwide coal resource, and China's low-order coal reserves account accounts for 50% left side of coal reserves
The right side, yield account for the 30% of current total amount.It is seen by the forming age of CHINESE COAL, with Jurassic Coal reserves maximum, accounts for about the whole nation and visited
45% or so of bright reserves, for the coal formed by this epoch in addition to only a few anthracite, most of remaining is lignite, length
The low-order coals such as flame coal, dross coal and weakly caking coal.In Regional Distribution, in Inner Mongol, Shaanxi, Xinjiang, sweet in large storage capacity segment set
Respectful, Shanxi, six, Ningxia province（Area）, and these areas are the serious deficient places of China's water resource, are constrained to a certain extent
It is processed upgrading industrial expansion using these low-order coals.
Low-order coal is due to high-moisture, high-volatile, low heat value, and easily spontaneous combustion the characteristics of, to be unsuitable for long term storage
And long-distance transportation, it is considered a kind of low-grade coal resource for a long time, is only used as pit-head power station fuel and near coal-mine gasified raw material at present,
Limit the rational exploitation and utilization of low order coal resource.How Efficient Conversion is just important at one of coal utilization using low-order coal
Problem.
Conventional wet coke quenching method is that red burnt temperature is dropped to 300 degree hereinafter, the steam that quenching generates directly is arranged using water spray
It is put into air, wastes red a large amount of sensible heats of coke, meanwhile, when coke wet quenching, red coke quick refrigeration can be such that coke crackle increases, coke matter
Amount declines, and coke moisture fluctuation is larger, is unfavorable for blast furnace ironmaking production.In addition, the entrainment with steam that coke wet quenching generates remains in coke
Korrosionsmedium in charcoal and a large amount of dust pollute environment and air.
Invention content
In order to solve the above technical problem, the present invention provides a kind of dry coke quenching to couple smalls pyrolytic process, realizes red parch
The coupling of quenching cooling technology and smalls pyrolytic technique fully recycles the material sensible heat in technique, energy saving,
So that coke quality is significantly improved using Dry Quenching Technology simultaneously, reduces the discharge of harmful substance, protect environment.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of dry coke quenching coupling smalls pyrolytic process, includes the following steps：
A, raw material coking coal is refined by coke oven into red coke, is sent to ring type quenching cooling device as first via raw material；
B, not viscous smalls is sent as the second road raw material to ring type quenching cooling device, and small beans passes through granule pyrolysis of coal filter device
Enter ring type quenching cooling device as third road raw material after processing；
C, red burnt, not viscous three kinds of materials of smalls and small beans are subjected to heat exchange pyrolysis in ring type quenching cooling device, done simultaneously
Cooling red coke is put out, the coal gas of high temperature for being pyrolyzed generation is passed into granule pyrolysis of coal filter device and is pyrolyzed in advance to small beans, and
Cold filtration is carried out to coal gas of high temperature simultaneously, filtered coal gas enters condensate recycling device；
D, condensate recycling device further purifies cooling to coal gas, while recycling coal tar, and the coal gas after cooling and purifying is through coal gas
A wind turbine part is outer to be supplied, and it is red burnt cooling that another part is recycled to the participation of ring type quenching cooling device；
E, the coke formed in ring type quenching cooling device, semicoke mixed material feeding swinging cooling device is further cold
But；
F, swinging cooling device product after cooling enters screening plant screening, output coke, char particle, coke powder and last coke powder four
Kind product.
Further, in the step b, red burnt, not three kinds of materials of viscous smalls and small beans the paving enters mode and is：
Smalls will not first be glued and spread and cease burnt cooling device bottom into ring type, then by the red coke that coke oven is produced cannot not be covered in viscously smalls it
On, finally the small beans after pre- pyrolysis is covered on red coke.
The present invention also provides a kind of dry coke quenching to couple smalls pyrolysis system, including：
Coke oven, ring type quenching cooling device, granule pyrolysis of coal filter device, condensate recycling device, swinging cooling device and sieve
Separating device；
Red coke made of the coke oven refining is sent to the thermal material feed inlet of ring type quenching cooling device, the ring type quenching cooling dress
The material outlet set is connected with the feed inlet of swinging cooling device, the high-temperature gas outlet of ring type quenching cooling device and granule
The heat source import of pyrolysis of coal filter device is connected；
The discharge port of the swinging cooling device is connected with the feed inlet of screening plant, and the discharge port of the screening plant is divided into
Four tunnels export coke, char particle, coke powder and last coke powder respectively；
The material outlet of the granule pyrolysis of coal filter device is connected with the feed inlet of ring type quenching cooling device, granule pyrolysis of coal
The gas exit of filter device is connected with the air inlet of condensate recycling device；
The gas circuit outlet of the condensate recycling device is connected with the import of gas fan, and the coal gas after cooling and purifying is through gas fan
A part of outer confession, it is red burnt cooling that another part is recycled to the participation of ring type quenching cooling device.
The present invention has the following technical effect that：
1, different from the conventional dry coke quenching mode for using inert gas, wet breath when burnt red burnt quick refrigeration can make the increasing of coke crackle
More, the fluctuation of coke moisture content is larger, and dry coke quenching mode of the invention is mildly cooled down using smalls, can make coke relative to the burnt mode of wet breath
Charcoal quality significantly improves, and improves the mechanical stability of coke, while reducing water consumption, reduces the moisture content of coke,
The discharge for reducing harmful substance, protects environment.
2, using the sensible heat of red coke, the not viscous smalls of addition is fully exchanged heat pyrolysis, the production of ring type quenching cooling device is passed through
Raw coal gas of high temperature is entered to preheat small beans in granule pyrolysis of coal filter device and be solved, and the small beans after pre- pyrolysis enters back into
Homogeneous heat is bored in ring type quenching cooling device, to generate a large amount of raw coke oven gas, so that thermal energy is made full use of and generates coal gas, saves
The energy reduces cost；Three kinds of materials of small beans after not viscous smalls, red burnt and preheating are spread successively burnt cooling into ring type breath
Device bottom, effectively cools down red coke, and fully exchanges heat pyrolysis to not viscous smalls.
3, condensing recovery coal tar is carried out to the coal gas after filtering dust using condensate recycling device, and exports purification coal gas
Outer confession.
Description of the drawings
Fig. 1 is that dry coke quenching of the present invention couples smalls pyrolytic process flow chart；
Fig. 2 is the structural schematic diagram that dry coke quenching of the present invention couples smalls pyrolysis system.
Specific implementation mode
A kind of preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Fig. 2, dry coke quenching coupling smalls pyrolysis system of the present invention includes：
Coke oven 100, red burnt transfer cart 200, ring type quenching cooling device 300, swinging cooling device 400, screening plant 500,
Small beans cold filtration 600, condensate recycling device 700.
The discharge port of the coke oven 100 carries out entrucking by the feed inlet of red burnt transfer cart 200, and the red burnt transfer cart is by object
Material is transported to the thermal material feed inlet of ring type quenching cooling device 300.
The material outlet of the ring type quenching cooling device 300 is connected with the feed inlet of swinging cooling device 400, high temperature
Gas vent is connected with the heat source import of granule pyrolysis of coal filter device 600, and the smalls 310 that do not glue is cooled down by ring type quenching
The material inlet of device 300 enters.
400 discharge port of swinging cooling device is connected with the feed inlet of screening plant 500, and heat exchange hot water passes through cycle
Water pump 410 is recycled to cooling rack 420 and carries out heat exchange, and the cold water after exchange returns to swinging cooling device and recycles.
The discharge port of the screening plant 500 is divided into four tunnels, exports coke 510, char particle 520, coke powder 530 and Mo Jiao respectively
Powder 540.
The material outlet of the small beans cold filtration 600 is connected with the feed inlet of ring type quenching cooling device 300, coal gas
Outlet is connected with the air inlet of condensate recycling device 700；
The gas circuit outlet of the condensate recycling device 700 is connected with the import of gas fan 710, and cooling coal gas is through gas fan
Externally supply coal gas, a remaining part send the connected participation of gas circuit entrance to ring type quenching cooling device 700 cold for 710 pressurizations
But.
The present invention is used raw material（Not viscous smalls, small beans）It is sent to ring type quenching cooling device, is shown using red burnt
Heat carries out a large amount of coal gas of heat exchange pyrogenic processes production and raw coke oven gas, raw coke oven gas generate purification after cold filtration, condensing recovery
Coal gas carries out outer supply.
1 pair of present invention process illustrates below in conjunction with the accompanying drawings：
A kind of dry coke quenching coupling smalls pyrolytic process, includes the following steps：
Coking coal 100 is refined by coke oven at red burnt 101；
Ring type quenching cooling device 300 is delivered to by red burnt transfer cart 200 by red burnt 101；
Red burnt 101,601 3 kinds of materials of not viscous smalls 310 and pre- pyrolysis granule coal are carried out in ring type quenching cooling device 300
It is dry while heat exchange pyrolysis to put out cooling red coke.Coke after cooling, semicoke mixed material 301 are sent into swinging cooling device 400
Further cooling, the coal gas of high temperature 302 that heat exchange pyrolysis generates, which is passed into granule pyrolysis of coal filter device 600, carries out small beans
Pre- pyrolysis, and cold filtration is carried out to coal gas.
Red burnt, not three kinds of materials of viscous smalls and small beans the paving enters mode and is：Smalls will not first be glued and spread and ceased into ring type
Burnt cooling device bottom, then the red coke that coke oven is produced cannot be covered in viscously on smalls, finally the small beans after pre- pyrolysis is covered
It covers on red coke.
The heat exchange hot water 402 generated when 400 heat exchange of swinging cooling device is pumped by water circulating pump 410 to cool
Water frame 420, the cold water 421 after the heat exchange of cooling rack 420 again return to swinging cooling device 400 and carry out circulating cooling object
Material, material 401 after cooling enter screening plant 500 and carry out sieve classification.
Material is subjected to sieve classification finally by screening plant 500, separates coke 510, char particle 520, coke powder 530 and end
540 4 kinds of products of coke powder.
While the granule pyrolysis of coal filter device 600 is filtered cooling to coal gas of high temperature 302 also to small beans into
The pre- pyrolysis of row.Filtered coal gas 602 enters condensate recycling device 700；
The condensate recycling device 700 further purifies cooling to coal gas, while recycling coal tar.Coal gas after cooling and purifying
701, through being supplied outside gas fan 710, partly send to ring type quenching cooling device 300 and participate in red burnt 101 cooling.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (3)
1. a kind of dry coke quenching couples smalls pyrolytic process, which is characterized in that include the following steps：
A, raw material coking coal is refined by coke oven into red coke, is sent to ring type quenching cooling device as first via raw material；
B, not viscous smalls is sent as the second road raw material to ring type quenching cooling device, and small beans passes through granule pyrolysis of coal filter device
Enter ring type quenching cooling device as third road raw material after processing；
C, red burnt, not viscous three kinds of materials of smalls and small beans are subjected to heat exchange pyrolysis in ring type quenching cooling device, done simultaneously
Cooling red coke is put out, the coal gas of high temperature for being pyrolyzed generation is passed into granule pyrolysis of coal filter device and is pyrolyzed in advance to small beans, and
Cold filtration is carried out to coal gas of high temperature simultaneously, filtered coal gas enters condensate recycling device；
D, condensate recycling device further purifies cooling to coal gas, while recycling coal tar, and the coal gas after cooling and purifying is through coal gas
A wind turbine part is outer to be supplied, and it is red burnt cooling that another part is recycled to the participation of ring type quenching cooling device；
E, the coke formed in ring type quenching cooling device, semicoke mixed material feeding swinging cooling device is further cold
But；
F, swinging cooling device product after cooling enters screening plant screening, output coke, char particle, coke powder and last coke powder four
Kind product.
2. dry coke quenching according to claim 1 couples smalls pyrolytic process, which is characterized in that described red in the step b
Burnt, not three kinds of materials of viscous smalls and small beans pavings enter mode and are：
Smalls will not first be glued and spread and cease burnt cooling device bottom into ring type, then by the red coke that coke oven is produced cannot not be covered in viscously smalls it
On, finally the small beans after pre- pyrolysis is covered on red coke.
3. a kind of dry coke quenching couples smalls pyrolysis system, which is characterized in that including：
Coke oven, ring type quenching cooling device, granule pyrolysis of coal filter device, condensate recycling device, swinging cooling device and sieve
Separating device；
Red coke made of the coke oven refining is sent to the thermal material feed inlet of ring type quenching cooling device, the ring type quenching cooling dress
The material outlet set is connected with the feed inlet of swinging cooling device, the high-temperature gas outlet of ring type quenching cooling device and granule
The heat source import of pyrolysis of coal filter device is connected；
The discharge port of the swinging cooling device is connected with the feed inlet of screening plant, and the discharge port of the screening plant is divided into
Four tunnels export coke, char particle, coke powder and last coke powder respectively；
The material outlet of the granule pyrolysis of coal filter device is connected with the feed inlet of ring type quenching cooling device, granule pyrolysis of coal
The gas exit of filter device is connected with the air inlet of condensate recycling device；
The gas circuit outlet of the condensate recycling device is connected with the import of gas fan, and the coal gas after cooling and purifying is through gas fan
A part of outer confession, it is red burnt cooling that another part is recycled to the participation of ring type quenching cooling device.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019680A (en) * | 2019-12-10 | 2020-04-17 | 上海交通大学 | Method for promoting coal coking and improving gas yield and quality |
| CN111057559A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Energy-mass conversion method combining dry quenching and biomass pyrolysis |
| CN111057561A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Device and method for performing high-temperature chemical energy storage conversion by using coke quenching waste heat |
| CN111057560A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Energy-quality coupling method for dry quenching furnace and iron-making blast furnace |
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| CN208700980U (en) * | 2018-07-20 | 2019-04-05 | 新疆乾海环保科技有限公司 | A kind of dry coke quenching coupling smalls pyrolysis system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111019680A (en) * | 2019-12-10 | 2020-04-17 | 上海交通大学 | Method for promoting coal coking and improving gas yield and quality |
| CN111057559A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Energy-mass conversion method combining dry quenching and biomass pyrolysis |
| CN111057561A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Device and method for performing high-temperature chemical energy storage conversion by using coke quenching waste heat |
| CN111057560A (en) * | 2019-12-10 | 2020-04-24 | 上海交通大学 | Energy-quality coupling method for dry quenching furnace and iron-making blast furnace |
| CN111057559B (en) * | 2019-12-10 | 2021-07-16 | 上海交通大学 | Energy-mass conversion method combining dry quenching and biomass pyrolysis |
| CN111057560B (en) * | 2019-12-10 | 2021-12-03 | 上海交通大学 | Energy-quality coupling method for dry quenching furnace and iron-making blast furnace |
| CN111057561B (en) * | 2019-12-10 | 2022-02-22 | 上海交通大学 | Device and method for performing high-temperature chemical energy storage conversion by using coke quenching waste heat |
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