CN109135829A - A kind of coal fixed bed gasification method - Google Patents

A kind of coal fixed bed gasification method Download PDF

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Publication number
CN109135829A
CN109135829A CN201710454928.0A CN201710454928A CN109135829A CN 109135829 A CN109135829 A CN 109135829A CN 201710454928 A CN201710454928 A CN 201710454928A CN 109135829 A CN109135829 A CN 109135829A
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China
Prior art keywords
coal
raw material
gasification
fine coal
gasification furnace
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CN201710454928.0A
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Chinese (zh)
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刘天行
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/721—Multistage gasification, e.g. plural parallel or serial gasification stages
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0903—Feed preparation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/093—Coal

Abstract

The invention discloses a kind of coal fixed bed gasification methods, this method couples fine coal on the basis of fixed bed gasification technology and gasifies, it can be all using the fine coal of any coal as fixed bed gasification raw material, raw material fine coal is formed the feed mode of fixed-bed gasification furnace top and bottom differentiation by different preprocess methods (thermoforming and dusting), it solves the problems, such as that fixed bed can only be using the limitation of block stock and coal gasification efficiency and wastewater treatment, and then breaches fixed bed gasification and be only capable of that the restriction of fine coal raw material using block stock and cannot be used.This invention couples fine coal on the basis of fixed bed gasification technology and gasifies, comprising: top feed fine coal thermoforming pretreatment, the pretreatment of bottom raw material fine coal, top feed mechanism, bottom fine coal conveying mechanism, bottom feeding mechanism, gasification furnace body, melting tapping mechanism, raw gas cooling body etc..

Description

A kind of coal fixed bed gasification method
Technical field
The present invention relates to a kind of coal fixed bed gasification method, be it is a kind of convert synthesis gas for Coal Gasification, thus into The method that one step carries out chemical products synthesis, production gaseous fuel, liquid fuel, metallurgic product etc..
This invention category derived energy chemical field.
Background technique
Coal is the main fossil energy of China, accounts for 60% or more of domestic fossil energy reserves total amount.As solid Fuel, industrial production raw material are widely used in burning, power generation, Chemical Manufacture, metallurgical production etc..Modern Coal-based Chemical industry it is quick Development, new demand is proposed to coal gasification progress.
Open at present and application gasification technology, it is no matter any, it is also each to have not while having a clear superiority feature Foot.Such as: there is air flow bed bed pulverized coal gasification technology coal to be applicable in strong, gasification efficiency height, vapor resolution ratio height, available gas The advantages that ingredient is high, the intensity of gasification is big.But also it is clearly present that the thermal efficiency is relatively low, oxygen consumption is slightly higher (relative to fixation The gasification of bed slag), gasified raw material coal milling ratio high (100%) and the problems such as cause feedstock processing energy consumption high, at high cost.Again Such as: fixed bed slag gasification technology has big thermal efficiency height, the intensity of gasification, available gas ingredient height, vapor resolution ratio high The advantages that, being simply possible to use in lump coal gasification, (although having fine coal cooling formation technic, but gasification result is undesirable, use ratio is inclined It is low), it is restricted the application of this technology.If can suitably cover the shortage on the basis of original advantage, then to this Technology has great significance.
The invention discloses a kind of coal fixed bed gasification method, this method couplings on the basis of fixed bed gasification technology Fine coal is closed to gasify, both can be using fine coal as gasified raw material, it can also be using the mixture of fine coal and lump coal as gas Change raw material, not only improved the utilization efficiency of coal resources, but also solves fixed bed to use limitation and the coal gas of block stock The problem of changing efficiency and wastewater treatment.This invention couples fine coal on the basis of fixed bed gasification technology and gasifies, packet It includes: top feed fine coal thermoforming pretreatment, the pretreatment of bottom raw material fine coal, top feed mechanism, bottom fine coal conveyer Structure, bottom feeding mechanism, gasification furnace body, melting tapping mechanism, raw gas cooling body etc..
Gasification principle
Coal Gasification is an endothermic process, and temperature height, which is conducive to gasification, to carry out.Various gasification technologies all use coal charge It aoxidizes to provide heat needed for gasification and during which also have partial volatiles matter, such as: CH4、CO、H2Deng reacting fever with oxygen.
C+O2→CO2 97.0 Kcal/mol
C+1/2O2→CO 29.4 Kcal/mol
This partial heat forms trapezoidal point of temperature in furnace from bottom to top for heating coal charge, vapor and oxidation product Cloth.Under the high temperature conditions, coal charge, CO2、H2Gasification reaction occurs in furnace for the substances such as O.
C+H2O→CO+H2
CO2+H2→CO+H2O
CH4+H2O→CO+3H2
C+CO2→2CO
CH4+CO2→2CO+2H2
Gasified raw material in this course, completes gasification, and residual residue enters deslagging system based on inorganic salts after melting System, and product gas then passes through pipeline and enters cooling and preliminary purification system.
Summary of the invention
The object of the present invention is to provide a kind of fixed bed gas of feed coal for being applicable to more coals and various particle shapes Change method, this method is by the raw material fine coal preprocess method that carries out to gasification raw material fine coal different modes but simultaneously, to original Material is pre-processed, and is then coupled fine coal on the basis of fixed bed gasification technology and is gasified, and melting residue passes through slag extractor Structure discharge.
The step of realizing the above process and method are:
1) gasified raw material fine coal (including: lignite, bituminous coal, bottle coal, meager coal, lean coal, anthracite etc. after drying) enters pre- place Reason system, isolate first grain graininess greater than 6mm beans it is individually placed, rest part successively carries out bottom and top respectively Gasified raw material pretreatment.
2) the raw material fine coal 30%~70% of 0~6mm of grain graininess is milled, granularity is 80~250 mesh, as gasification furnace Bottom transferring raw material.Rest part of the grain graininess between 0~6mm, carries out thermoforming, and forming temperature is 700 DEG C~1300 DEG C, 6mm~60mm block is crushed to after molding, as top of gasification furnace transferring raw material.
3) thermoformed parts material can collect tar, raw gas and other chemical products in forming process.
4) raw material after thermoforming can be mixed with the beans of 6mm or more granularity in untreated raw material fine coal, as Top transferring raw material enters gasification furnace and gasifies.
5) granularity is the raw material (the 20%~70% of raw material gross weight) of 80~250 mesh after being milled, as gasification furnace bottom Transferring raw material as carrier gas (includes: N by inert gas with the method for two-phase transportation2、CO2、CH4Deng), it is sent into gasification furnace bottom Portion is burnt and is gasified.When use CO2It, can will be as the CO of carrier gas when as carrier gas290% or more be converted into CO has and improves resource efficiency and CO2Emission reduction function.
6) feed nozzle is arranged in bottom fine coal feed inlet, is made by heat-resisting, wear-resistant material, and have water jacket (or vapour jacket) Protection.Feed nozzle is circumferentially evenly arranged in gasification furnace bottom, and totally 3~9.
7) gasification furnace bottom is equipped with gasifying agent nozzle, and O is conveyed into furnace from gasifying agent nozzle2And steam.Gasifying agent nozzle It can integrate with fine coal nozzle and be integrated design, it can also be with independent design.When independent design, with fine coal nozzle uniform intervals, edge Gasification furnace is circumferentially uniformly distributed, and quantity is 3~9.
8) fine coal, the O sprayed by nozzle2It is quickly aoxidized in the gap that gasification furnace bottom is formed by block with steam And gasification reaction, generate big calorimetric (temperature is about 1400~2100 DEG C) and gaseous product.This part hot gaseous product is swept along Unreacted coal dust to gasification furnace ionized motion, and heats top block material.
9) due to the specific characteristic of blocky thermoforming material, block material is mobile from gasification furnace top to gasification furnace bottom In the process, it both can constantly gasify, while the gap between gasification furnace combustion zone can maintain enough piece again, allow a large amount of fine coal Into and occur oxidation and gasification reaction.
10) specific characteristic of block material includes: the thermal stability of material after fine coal thermoforming as top feed (TS+10Not less than 75%), 1500 DEG C of ash fusion point <, reactivity (15~65), cold strength (M6+> 85%), grindability (M10 < 10%) etc..
11) feature of fine coal material includes: coke powder and raw coal fine coal mixture or raw coal after thermoforming as bottom raw material Fine coal, fine coal milling granularity are 80-250 mesh, reactivity (40-85), ash fusion point less than 1400 DEG C etc..
12) residual residue after fine coal and block stock react, becomes slag at high temperature, by the furnace bottom slag notch that gasifies Discharge.
13) after coal charge gasification, the raw gas (synthesis gas) of output is come out of the stove by top of gasification furnace, raw gas outlet temperature Degree is 400 DEG C -700 DEG C, for downstream processing, use after supercooling, preliminary purification.
The principle of the present invention
Description based on gasification principle, the invention discloses a kind of new to couple fine coal in fixed bed gasification technical foundation The method to gasify.Its mechanism for being different from other fixed bed gasification methods is:
1) a kind of raw material respective pretreatment method before the gasification that can be used for any coal is provided.By the thermoforming of raw material fine coal and Raw material dusting composition.Thermoforming process is suitably adapted for any coal (including drying brown coal), such as Fig. 1.
2) the feed form of top and bottom differentiation is formed by the different processed raw material fine coal of preprocessing process.Top Portion's raw material fine coal thermoforming block has thermal stability good, and calorific intensity is high, reactivity and bottom raw material fine coal coupling matching Feature.Stable skeleton structure and space are provided to enter for gasification furnace combustion zone powder and react, is formed simultaneously difference The reaction speed of change, thus bottom fine coal dosage can be increased substantially, and then break through fixed bed gasification and be only capable of using blocky former The limitation of material, can be all using fine coal as raw material, and the system of fine coal raw material cannot be used by fundamentally breaching fixed bed gasification About.
3) by gasifying agent and powder integrated spray nozzle or monojet, quick zoneofoxidation is formed in block gap, it is complete At relative to the common more rapid oxidation process of fixed bed gasification technology, transformation of the raw material from solid phase to gas phase is completed faster, Bed section between oxidation panel and reduction section forms bigger gas flow rates, so that reduction section be made to thicken, restores Section bottom section temperature is higher, is conducive to improve the intensity of gasification, such as Fig. 2.
4) when raw gas moves up in bed, heat is constantly exchanged with block, and gasification reaction intensity is gradually decreased simultaneously, most After terminate, the rough coal tolerance of same number raw material production it is suitable compared with the common fixed-bed gasification furnace that identical operating condition operate or Slightly more (CO2General < 10% when conveying), the gas flow rate of bed top cross-section is suitable with common fixed-bed gasification furnace, gasification Furnace headspace temperature is lower (about 400 DEG C~700 DEG C).
According to the method, positive effect of the invention is:
It 1) is a kind of technology for coupling fine coal on the basis of fixed bed gasification technology and gasifying.High with the thermal efficiency, The advantages that steam decomposition rate is high, available gas ingredient is high, top temperature low (400 DEG C~700 DEG C), combustion zone operation temperature is 1400 DEG C~2100 DEG C, 1350 DEG C~1500 DEG C of reduction section temperature, operating pressure is 0.1MPa~6.0MPa, and the intensity of gasification is big.
2) raw material that gasification technology described in is adapted to each coal is (including drying brown coal, bottle coal, bituminous coal, meager coal, thin Coal, anthracite etc.), various raw material granularities are adapted to, can be entirely 6mm or less fine coal, can also be entirely 6mm or more Lump coal and therebetween the powder agglomates mixed material of any ratio mixing.
3) in the raw gas condensed water being discharged, harmful organic substance is few, and phenols, cyanides are few, and COD is low, can Directly to carry out biochemical treatment.
4) in CO2Have in remaining technology chain and use, uses CO2Powder is conveyed as carrier gas, carbon row can be greatly reduced It puts.
5) when at top, bulk material ratio is no less than 50%, gasification described in the invention adds than simple broken coal Press gasification technology that there is apparent economic sexual clorminance.
Detailed description of the invention
1) Fig. 1 explanatory diagram 1 is the general flow chart of this patent the method.
(1) number explanation: 1.: feed coal；2.: grading processing；3.: bottom feed pretreatment；4.: storage；5.: Top feed is prepared；6.: thermoforming；7.: top of gasification furnace material cup；8.: two-phase transportation；9.: gasification furnace；10.: two-phase transportation is situated between Matter (CO2、N2Deng)；: fine coal；: by-product；: gasification raw gas；: gasifying agent (oxygen, vapor)；: gasification Residue.
(2) procedure declaration:
Feed coal (mixed material of fine coal or lump coal and fine coal) first passes around grading processing, the material greater than 6mm Into beans storehouse, remaining raw material for being less than 6mm respectively enters bottom pretreatment process and top thermoforming according to set proportion Process.Distribution enters the raw material of bottom fine coal feeding part, through broken, milling, after granularity reaches 80~250 mesh, into material Storehouse.Distribution enters the raw material of top feed, by coal blending, carries out thermoforming, uniformly mixes with the beans of > 6mm later, enters Top feed bin.Block, the pellet of top feed bin are sent to top of gasification furnace material cup through conveying device by top feed bin, enter through material cup Gasification furnace.Bottom powder use two-phase transportation method, be forced into gasification furnace pressure match, by pumped (conveying) medium through gasification furnace bottom Portion's nozzle brings gasification furnace into.The raw material for entering gasification furnace by top and bottom is coupled into after gasification furnace in combustion zone The reactions such as gasification, oxidation, and it is finally completed gasification.
2) Fig. 2 explanatory diagram 2 is the 4th, 5 claim structure feature figure in patent claims book.
Number explanation: 1: raw gas outlet；2: material cup connecting flange；3: material cup；4: furnace roof space；5: feed distributor； 6: refractory lining；7: gasification furnace body；8: unitary nozzle interface；9: steam (steam inlet)；10: oxygen (oxygen inlet)； 11: fine coal import；12: cooling water outlet；13: cooling water inlet；14: putting out slag ladle interface；15: slag notch；16: integration spray Mouth；17: fine coal channel；18: oxygen channel；19: water vapor channel.
Embodiment
Gasified according to the method for foregoing summary to raw material using domestic somewhere bituminous coal as gasified raw material.
Coal analysis is matched in raw material fine coal thermoforming:
This example all uses fine coal for raw material, and 45% raw material fine coal is taken to be milled, 200 mesh of granularity, as gasification furnace bottom Transferring raw material.55% raw material fine coal coal blending is taken, thermoforming is carried out, as top of gasification furnace transferring raw material.In forming process, receive Take 19.8Kg/ tons of raw materials of tar, coal gas 85Nm3/ ton raw material, thick aromatic hydrocarbons 0.40Kg/ tons of raw materials.
Thermoforming product property:
Cold strength Thermal stability Reactivity Wearability Fixed carbon
M25> 87% TS+6> 90% CRI%31% M10< 10 74.1%
Using CO2For carrier gas, two-phase transportation bottom powder enters furnace, and top expects that cup into block, enters furnace powder particles less than 200 Mesh, reactivity 55,1320 DEG C of ash fusion point, entering furnace powder agglomates weight ratio is 1.12: 1, and carrier gas conveying capacity is 5Kg/Nm3CO2。
Using method described in the invention, gasifier operation pressure is 3.60MPa, oxygen-supplying amount 560Nm3/ ton mixed coal is former Material, 450Kg/ tons of mixed coal raw materials of vapor volume.This operation is using gasifying agent nozzle and the independent structure type of powder nozzle.
After stable operation, top of gasification furnace temperature is 535 DEG C, is analyzed by lime-ash, efficiency of carbon con version 98.7%.
Gasify raw gas composition (volume %):
H2 CO CH4 CO2 Other hydro carbons Incombustible
27.3 64.1 1.9 5.3 1.0 0.4
Ton raw material mixed coal produces effective gas (CO+H2)1836Nm3。

Claims (8)

1. a kind of coal fixed bed gasification method, this method can be all using the fine coal of any coal as fixed bed gasification Raw material obtains the raw material form with various trait, then distinguishes its main feature is that raw material fine coal passes through different preprocess methods From top of gasification furnace and bottom, (granular material) is carried using self weight (thermoforming block material) and carrier gas and enters gasification furnace, Under the conditions of -2100 DEG C of temperature in 1400 DEG C of combustion zone carry out coupled gasification process, gasifier operation pressure be 0.1MPa~ 6.0MPa, the intensity of gasification are big.
2. adjusted according to the method for claim 1 it is characterized by: part material coal is after initial gross separation by grade, Compounding agent can also be added after coal blending, thermoforming furnace or coke oven are entered after making firm by ramming, by 700 DEG C~1300 DEG C high temperatures at Type is crushed to 6mm-60mm block after thermoforming, as top of gasification furnace transferring raw material.
3. according to the method for claim 1 it is characterized by: (1) another part raw material fine coal is passing through initial gross separation, breaking After broken, milling, granularity is that the raw material of 80-250 mesh enters feed bin, the total amount of this part fine coal be gasified raw material total amount 20%~ 70%, and can be adjusted according to raw material condition；(2) coal dust in filler bin passes through CO2Equal inert carrier gas two-phase transportation, enters Gasification furnace；(3) after the coal dust in filler bin is heated to 100 DEG C~350 DEG C before two-phase transportation (or directly with hot carrier gas), Into gasification furnace.
4. according to the method for claim 1 it is characterized by: in equally distributed 3~9 gasifying agents spray of gasification furnace bottom Mouth and it is spaced 3~9 fine coal (other gasified raw materials) nozzle being evenly arranged therewith.Water-cooled jacket can be set in fine coal nozzle, It can be not provided with water-cooled jacket.
5. according to the method for claim 4 it is characterized by: in equally distributed 2~9 integrations collection of gasification furnace bottom At nozzle, the interlayer that this integrated nozzle is characterized in that (1) innermost layer lumen passes through between coal dust, with middle layer is water-cooled jacket, Middle layer is oxygen channel, is water-cooled jacket on the outside of oxygen channel, water-cooled jacket outer layer is steam channel, and outermost layer is water-cooled jacket；(2) The setting of fixed bed gasification furnace bottom can be sent into the substances such as fine coal material, oxygen, vapor, carbon dioxide by a nozzle The integrated spray nozzle device of gasification furnace.
6. according to claim 1, method described in 4,5 by pretreatment of raw material and claim 4,5 it is characterized by: retouched The gasification furnace structure feature stated enters the fine coal thermoforming block of gasification furnace and the powder for entering gasification furnace from bottom from top, It has different characteristics, the reactivity for being embodied in bottom charging is higher than the reactivity of top block, and the heat of top block Stability is higher than the thermal stability etc. of bottom charging, and coupling forms discrepant fixed bed gasification raw material composition.
7. process according to claim 6, it is characterized in that gasifying due to the hypoergia and thermal stability of top block Furnace bottom combustion zone forms gap between big block, to allow a large amount of powders to be coupled into, simultaneously because the reactivity of powder The powder that feature and gasifying agent enter gasification furnace together quickly aoxidizes and partial oxidation, switchs to gas phase and rapid uplink by solid phase, For the powder vacating space of subsequent entrance, while heat is taken to reduction zone, carries out gasification reaction.
8. according to gasification furnace involved in method described in claim 4,5,6, it is characterized in that a tubular structure, inner wall are inlayed Refractory material, the bottom in cylinder is equipped with integrated spray nozzle, for fine coal raw material, O2, steam passes through in same nozzle not respectively Enter gasification furnace with channel, top is coupled by flange with charging cup, and bottom is coupled by flange with breath slag ladle.
CN201710454928.0A 2017-06-16 2017-06-16 A kind of coal fixed bed gasification method Pending CN109135829A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101982528A (en) * 2010-11-23 2011-03-02 神华集团有限责任公司 Gasification device for classified gasification of moving bed, method for gasifying coal and applications thereof
CN102399592A (en) * 2011-10-08 2012-04-04 湖北双环科技股份有限公司 Segmenting and partitioning coal gasification process of fixed bed
CN104312632A (en) * 2014-10-24 2015-01-28 山西晋城无烟煤矿业集团有限责任公司 Washed coal and small-sized coal blended fixed bed intermittent gasification method
CN105132023A (en) * 2015-08-26 2015-12-09 上海泽玛克敏达机械设备有限公司 Lump coal-pulverized coal integration gasification furnace and lump coal-pulverized coal integration gasification method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101982528A (en) * 2010-11-23 2011-03-02 神华集团有限责任公司 Gasification device for classified gasification of moving bed, method for gasifying coal and applications thereof
CN102399592A (en) * 2011-10-08 2012-04-04 湖北双环科技股份有限公司 Segmenting and partitioning coal gasification process of fixed bed
CN104312632A (en) * 2014-10-24 2015-01-28 山西晋城无烟煤矿业集团有限责任公司 Washed coal and small-sized coal blended fixed bed intermittent gasification method
CN105132023A (en) * 2015-08-26 2015-12-09 上海泽玛克敏达机械设备有限公司 Lump coal-pulverized coal integration gasification furnace and lump coal-pulverized coal integration gasification method

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