CN106590762A - Method for improving performance of catalyst in catalytic coal gasification by using composite additive - Google Patents
Method for improving performance of catalyst in catalytic coal gasification by using composite additive Download PDFInfo
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- CN106590762A CN106590762A CN201510666010.3A CN201510666010A CN106590762A CN 106590762 A CN106590762 A CN 106590762A CN 201510666010 A CN201510666010 A CN 201510666010A CN 106590762 A CN106590762 A CN 106590762A
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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
- C10J3/72—Other features
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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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
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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
- 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
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
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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
- 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
- C10J2300/0909—Drying
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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
- 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
-
- 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
- C10J2300/0983—Additives
- C10J2300/0986—Catalysts
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
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Abstract
The present invention relates to a method for improving the performance of a catalyst in catalytic coal gasification by using a composite additive. A purpose of the present invention is to mainly solve the problems of catalyst failure and not high recovery rate in the prior art. The method comprises: (1) hydrothermal treatment: adding a composite additive and carrying out impregnating mixing with a coal sample by using a wet mixing method, and then drying; and (2) acid washing treatment: stirring the coal powder and an acid liquid at a room temperature, washing the obtained coal sample by using deionized water until achieving a neutral state, and then drying to complete the coal sample treatment. According to the present invention, the process method is simple, the problems in the prior art can be well solved, and the method can be used in the catalytic coal gasification in the industrial production.
Description
Technical field
The invention belongs to coal gasification field, and in particular to a kind of compound additive improves catalyst in catalytic coal gasifaction
The method of performance.
Background technology
The basic and indispensable production factors of the important substance that relied on of development and economic growth of society are just
It is the energy.Now the main energy in the world comes from fossil energy, in 200 after the industrial revolution year,
Coal is this country with feature rich in coal and poor in oil of worldwide main energy sources, especially China, in stone
Under the background that oil and gas is increasingly reduced, the coal conversion technology for developing high effect cleaning is with far-reaching significance.
Coal gasification refers to coal in specific equipment, and organic matter and gasifying agent in coal is made under uniform temperature and pressure
There is series of chemical in (such as steam/air or oxygen), solid coal is converted into containing CO, H2、
CH4Deng fuel gas and C02、N2Deng the process of incombustible gas.
Although traditional coal gasification course realizes industrialization, but reaction temperature is higher, generates gas purification difficulty,
Energy consumption is larger, higher to equipment requirement.Nowadays increasingly the energy of exhaustion is also proposed to the Coal Gasification Technology of high energy consumption
Challenge, therefore many scholars set about the catalytic gasification of Study on Coal, catalytic gasification has many good qualities, for example：Can
To significantly improve coal gasification reactivity, such as Yasuo et al. utilizes Ca (0H) at 700 DEG C2Make low-order coal
Gasification reactivity improves 40～60 times；Can be greatly reduced gasification reaction temperature (<1000 DEG C), such as Yeboah
Et al. with 10% Li2CO3Raw coal can be made in CO2The reaction activity gasified under atmosphere is from 30.60kJ/mol
It is down to 16.88kJ/mol；Some building-up processes can be carried out, under catalyst and corresponding process conditions,
CH can be realized in gasification furnace4, NH3And CH3The synthesis of OH etc.；Coal adaptability can be improved, because
Catalyst can reduce the cohesiveness of coal.Therefore, carrying out the research of catalytic coal gasifaction can be greatly reduced gasification temperature,
Gasification efficiency is improved, oxygen enriched product is obtained, follow-up change operation is reduced, the advantages of reduce equipment investment cost,
Its research tool is of great significance.
Catalytic gasification fails industrialization in the coal conversion process that 20th century developed, and studies carefully its main cause and is that
The inactivation of catalyst and loss.Report according to the study, due to the presence of clay mineral in the material of colliery, with catalysis gas
Change sylvite catalyst used and generate lithium aluminium silicate, inactivate catalyst；And lithium aluminium silicate is water insoluble, cause
Catalyst reclaims difficult, it is difficult to recycle；Plus basic species to factors such as the corrosion of hardware, cause into
This is too high and lack competitiveness, and ultimately fails to be promoted and commercial Application.
Therefore both at home and abroad corresponding catalyst recovery technology is developed including EXXON, GPE and Xin Ao etc..Should
The key of recovery technology is to reclaim soluble alkali metal and catalyst using washing, reuses pickling or clears up
Means enter promoting the circulation of qi to the mineral matter in coal ash producing chemically combined catalyst and reclaiming to recovered liquid
The sequence of operations such as wash, be dried, crystallizing and being recycled catalyst, during being reused for catalytic gasification.
The recovery method that GPE companies of the U.S. propose in patent US20090169448/US20090169449 is needed
Will be through following steps：The coke with catalyst is contacted first with water after reacting in gasification furnace；Then
Think to be passed through CO in slurry system2, after being fully contacted slurry slurries, remove remaining CO2And the gas for generating,
Such as H2S etc.；Slurries rinse slag after slag-liquid separation using clear water.
GPE proposes other set recovery process in patent US2009/0165382A1：What gasification furnace was discharged
Semicoke containing catalyst is after washing, and alkali metal hydroxide carries out haptoreaction, product further with
CO2Contact and reflect, remove remaining CO2With generation weather, slag-liquid separation is carried out.Obtain catalyst solution.
Slag obtains the weak solution containing a small amount of catalyst through washing.
In sum, above-mentioned flow process is complicated for catalyst recovery process, and unit step is more, mainly for follow-up
Process after gasification process.Therefore, catalyst activity and the rate of recovery are not effectively improved from source.This
Bright proposing is washed and pickling operation to coal dust, and the relatively inexpensive calcium based additives of addition and pickling material exist
Under conditions of wet mixing, hydrothermal pretreatment and pickling deliming are processed, further by suppressing catalyst anti-with mineral matter
Should, effectively improve the activity and the rate of recovery of catalyst.
The content of the invention
Present invention mainly solves one of technical problem be that catalytic coal gasifaction has catalyst activity in prior art
It is not high, easily water-fast compound is generated with the reaction of coal dust mineral, so as to cause charcoal percent conversion not high,
Simultaneously water-fast compound also causes the problems such as later stage separation costs are high, and process flow is long.There is provided a kind of multiple
Close the device that additive improves catalyst performance in catalytic coal gasifaction.This group of device can have reduces coal dust chats
Content of material, removes a certain amount of coal ash, due to the particularity of this device so as to can improve catalyst activity
And the rate of recovery, it is ensured that reaction it is efficient with it is stable.
The two of the technical problem to be solved are to provide a kind of corresponding with one of technical problem is solved
Processing method.
To solve one of above-mentioned technical problem, the technical solution used in the present invention：One kind is improved in catalytic coal gasifaction
The device of catalyst activity and the rate of recovery, mainly including milling apparatus (4), washing equipment (5), drying equipment
I (6), pickler (7), filter plant (8), drying equipment II (9), washing equipment (5) must be stirred
Mix bar (13) and be passed into washing main body (16) bottom, top is provided with stirring rotator (15), washes main body
(16) washing outlet (17) is arranged at bottom.
In above-mentioned technical proposal, described milling apparatus (4) can carry out wet for colloidal mill or ball mill
Mill.Filtrate pH sensor is housed in filter plant (8).Stirring rotator (15) in washing equipment (5)
Rotating speed be 60～200r/min, the rate of heat addition of washing equipment (5) is 5～15 DEG C/min, and temperature range is
100～300 DEG C.
For solve the above problems two, the technical solution used in the present invention is as follows：One kind effectively improves coal catalysis gas
The method of catalyst activity and the rate of recovery in change, using the device of Claims 1 to 4, it is characterised in that described
Method comprise the steps：
(a) hydro-thermal process：Add additive to carry out dipping with coal sample with the method for wet mixing first to mix, then
Carry out drying and processing；
(b) pickling processes：Coal dust and acid solution are stirred at room temperature, the coal sample Jing deionization after pickling
Water washing is to neutrality, then carries out drying and processing, completes coal sample process；
Coal slurry c () is processed after after heating, drying, with catalyst gasification reaction generation is carried out in drying equipment
Synthesis gas.
In above-mentioned technical proposal, described additive is in iron-based additive, magnesium-based additive or barium based additive
At least one, described acid is HCl, HNO3Or H2SO4In one kind.Described hydro-thermal process
Temperature is 80～100 DEG C, and pressure is 0～2MPa.Contact of the coal dust with additive for dipping stirring, additive and
The weight ratio of raw coal is (0.25～0.35)：1, pickling needs the acid that molar concentration is 8～12% per 1g coal dusts
200～300ml.Pickling temperature is room temperature, coal sample deionized water rinsing used in filter plant (8) of acidifying
It is neutrality to washing lotion.Coal slurry after washing and pickling is heated in drying equipment I (6) and drying equipment II (9)
Dry at 105～125 DEG C, drying time is 8～24h.
Due in the course of reaction of catalytic coal gasifaction, it is desirable to which catalyst can have higher activity, it is to avoid in coal
Mineral matter for example kaolin and quartz etc. combine to form water-fast compound, so as to cause catalysis activity
Reduce, increase the detached difficulty of subsequent catalyst.
Using technical scheme：Compound additive is added by dipping, the work of mineral matter has effectively been passivated
With, suppress its reaction with catalyst, while through pickling remove coal in ash content, the removing kaolin of depth
And quartz, realize the raising of catalyst activity and the rate of recovery.Coal dust and catalyst Jing after compound additive process
Mixing, through detecting that charcoal percent conversion reaches 98%, reactivity indexes are 0.72, and catalyst recovery yield is 99%.
Description of the drawings
Fig. 1 is the method process schematic representation of catalyst activity and the rate of recovery in a kind of raising catalytic coal gasifaction；
1 is raw coal；2 is additive；3 are acid；4 is milling apparatus；5 is water heating apparatus；6 set for drying
Standby I；7 is pickler；8 is filter plant；9 is drying equipment II；10 are coal dust after processing.
Fig. 2 schemes for the apparatus structure detailed annotation of washing equipment.
11 is motor；12 is lowering or hoisting gear；13 is puddler；14 is washing equipment lid；15 turn for stirring
Son；16 are washing main body；17 are washing outlet；18 is pressure display unit；19 is explosion-protection equipment.
Raw coal 1 is ground through milling apparatus 4, and milling apparatus are connected with water heating apparatus 5, by additive 2
In being added to water heating apparatus 5, puddler 13 is connected with stirring rotator 15 in washing equipment 5, is placed in washing master
The bottom of body 16, the rotating speed of stirring rotator 15 is controlled by motor 11, and by the method for wet mixing additive is made
2 and it is fully contacted through the raw coal 1 of grinding, fully reacted coal sample and acid solution 3 are added to pickling and set jointly
Deliming process is carried out in standby 7, filter plant 8 is connected with pickler 7, is washed, coal after being processed
Powder 10.
Specific embodiment
【Embodiment 1】
The weight ratio of iron-based additive and raw coal is 0.3：1, washing temperature is 80 DEG C, and pressure is 2MPa, is turned
Speed is 100r/min, and iron additive is Fe3O4, the acid selected by pickling is H2SO4Concentration is 10%, spend from
Sub- water washing to liquid is neutrality, is dried in 105 DEG C of drying equipment, and drying time is 12h, so
Afterwards again with Na2CO3Catalyst mixes, and through detection, the content near average 6.5% of ash, vaporization time is less
The process of pickling deliming shortens 15%, and at 750 DEG C of gasification temperature, charcoal percent conversion reaches 80%, reactivity
Index is 0.55, and catalyst recovery yield is 93%.Concrete operations parameter and result are as shown in table 1.
【Embodiment 2】
The weight ratio of magnesium-based additive and raw coal is 0.3：1, washing temperature is 80 DEG C, and pressure is 2MPa, is turned
Speed is 100r/min, and magnesium-based additive is MgO, and the acid selected by pickling is H2SO4Concentration is 10%, is spent
Ion water washing to liquid is neutrality, is dried in 105 DEG C of drying equipment, and drying time is 12h,
Then again with Na2CO3Catalyst mix, through detection, ash content near average 5.5%, vaporization time compared with
The process of not pickling deliming shortens 17%, and at 750 DEG C of gasification temperature, charcoal percent conversion reaches 83%, reaction
Sex index is 0.57, and catalyst recovery yield is 95%.Concrete operations parameter and result are as shown in table 1.
【Embodiment 3】
The weight ratio of barium based additive and raw coal is 0.3：1, washing temperature is 80 DEG C, and pressure is 2MPa, is turned
Speed is 100r/min, and barium based additive is BaO, and the acid selected by pickling is H2SO4Concentration is 10%, is spent
Ion water washing to liquid is neutrality, is dried in 105 DEG C of drying equipment, and drying time is 12h,
Then again with Na2CO3Catalyst mix, through detection, ash content near average 4.7%, vaporization time compared with
The process of not pickling deliming shortens 25%, and at 750 DEG C of gasification temperature, charcoal percent conversion reaches 86%, reaction
Sex index is 0.56, and catalyst recovery yield is 93%.Concrete operations parameter and result are as shown in table 1.
【Embodiment 4】
The weight ratio of the additive package and raw coal of iron-based and magnesium-based is 0.3：1, wherein iron-based and magnesium-based additive
Weight ratio is 1:1, washing temperature is 80 DEG C, and pressure is 2MPa, and rotating speed is 100r/min, and iron-based adds
Agent is Fe3O4, magnesium-based additive is MgO, and the acid selected by pickling is H2SO4Concentration is 10%, spend from
Sub- water washing to liquid is neutrality, is dried in 105 DEG C of drying equipment, and drying time is 12h, so
Afterwards again with Na2CO3Catalyst mixes, and through detection, the content near average 3.2% of ash, vaporization time is less
The process of pickling deliming shortens 30%, and at 750 DEG C of gasification temperature, charcoal percent conversion reaches 91%, reactivity
Index is 0.66.As shown in table 1, catalyst recovery yield is 97% for concrete operations parameter and result.
【Embodiment 5】
The weight ratio of the additive package and raw coal of iron-based and barium base is 0.3：1, wherein iron-based and barium based additive
Weight ratio is 1:1, washing temperature is 80 DEG C, and pressure is 2MPa, and rotating speed is 100r/min, and iron-based adds
Agent is Fe3O4, barium based additive is BaO, and the acid selected by pickling is H2SO4Concentration is 10%, uses deionization
Water washing to liquid is neutrality, is dried in 105 DEG C of drying equipment, and drying time is 12h, then
Again with Na2CO3Catalyst mixes, and through detection, the content near average 3.1% of ash, vaporization time is less sour
Wash-out ash is processed and shortens 33%, and at 750 DEG C of gasification temperature, charcoal percent conversion reaches 92%, and reactivity refers to
Number is 0.68.As shown in table 1, catalyst recovery yield is 98% for concrete operations parameter and result.
【Embodiment 6】
The weight ratio of iron-based, the additive package of magnesium-based and barium base and raw coal is 0.3：1, wherein iron-based, magnesium-based
It is 1 with barium based additive weight ratio：1：1, washing temperature is 80 DEG C, and pressure is 2MPa, and rotating speed is 100r/min,
Iron-based additive is Fe3O4, magnesium-based additive is MgO, and barium based additive is BaO, and the acid selected by pickling is
H2SO4Concentration is 10%, and it is neutrality to be washed with deionized to liquid, is carried out in 105 DEG C of drying equipment
Drying, drying time is 12h, then again with Na2CO3Catalyst mixes, and through detection, the content of ash will
To average 2.5%, vaporization time less pickling deliming is processed and shortens 42%, at 750 DEG C of gasification temperature,
Charcoal percent conversion reaches 98%, and reactivity indexes are 0.72, and catalyst recovery yield is 99%.Concrete operations are joined
Number and result are as shown in table 1.
【Comparative example 1】
Without deliming process and the catalytic gasification of pickling, dried in 105 DEG C of drying equipment, during drying
Between be 12h, then again with Na2CO3Catalyst mixes, and through detection, the content of ash is 17.5%, in gas
At changing 750 DEG C of temperature, charcoal percent conversion is 65%, and reactivity indexes are 0.12, and catalyst recovery yield is 70%.
Concrete operations parameter and result are as shown in table 1.
Table 1
Claims (10)
1. a kind of compound additive improves the device of catalyst performance in catalytic coal gasifaction, and capital equipment includes grinding
It is equipment (4), washing equipment (5), drying equipment I (6), pickler (7), filter plant (8), dry
Dry equipment II (9), it is characterised in that washing equipment (5) obtains puddler (13) and is passed into washing main body (16)
Bottom, top is provided with stirring rotator (15), and washing outlet (17) is arranged at washing main body (16) bottom.
2. compound additive according to claim 1 improves the device of catalyst performance in catalytic coal gasifaction,
It is characterized in that milling apparatus (4) are colloidal mill or ball mill carries out wet-milling.
3. compound additive according to claim 1 improves the device of catalyst performance in catalytic coal gasifaction,
It is characterized in that being equipped with filtrate pH sensor in filter plant (8).
4. compound additive according to claim 1 improves the device of catalyst performance in catalytic coal gasifaction,
It is characterized in that the rotating speed of the stirring rotator (15) in washing equipment (5) is 60～200r/min, washing equipment
(5) the rate of heat addition is 5～15 DEG C/min, and temperature range is 100～300 DEG C.
5. a kind of method that compound additive improves catalyst performance in catalytic coal gasifaction, adopt characterized in that,
Catalytic coal gasification generates synthesis gas and comprises the steps：
(a) hydro-thermal process：Add compound additive to carry out dipping with coal sample with the method for wet mixing first to mix,
Then drying and processing is carried out；
(b) pickling processes：Coal dust and acid solution after step (a) process is stirred at room temperature, pickling
Coal sample Jing deionized water afterwards is washed to neutrality, then carries out drying and processing, completes coal sample process；
Coal slurry c () is processed after after heating, drying, with catalyst gasification reaction generation is carried out in drying equipment
Synthesis gas.
6. the method that compound additive according to claim 5 improves catalyst performance in catalytic coal gasifaction,
It is characterized in that compound additive is at least one in iron-based additive, magnesium-based additive or barium based additive.
7. it is according to claim 6 improve catalytic coal gasifaction in catalyst activity and the rate of recovery method,
Characterized in that, the temperature of hydro-thermal process is 80～100 DEG C in step (a), pressure is 0～2MPa.
8. the method that according to claim 6 compound additive improves catalyst performance in catalytic coal gasifaction,
Characterized in that, contact of the coal dust with compound additive is dipping stirring, compound additive and original in step (a)
The weight ratio of coal is (0.25～0.35)：1.
9. the method that compound additive according to claim 5 improves catalyst performance in catalytic coal gasifaction,
Characterized in that, the acid solution in step (b) is HCl, HNO3Or H2SO4In one kind, pickling is every
1g coal dusts need 200～300ml of acid that molar concentration is 8～12%.
10. it is according to claim 5 improve catalytic coal gasifaction in catalyst activity and the rate of recovery method,
It is characterized in that coal slurry is heated in drying equipment I (6) and drying equipment II (9) in described (c) step
Dry at 105～125 DEG C, drying time is 8～24h；The catalyst is selected from basic anhydride or slaine,
Wherein basic anhydride are Fe2O3, at least one in CaO and MgO, slaine is KCl, K2CO3、
K2SO4And Na2CO3In at least one.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590752A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method for increasing activity and recovery rate of catalyst in catalytic gasification of coal |
| CN108949239A (en) * | 2017-05-29 | 2018-12-07 | 镇江瑞德新材料科技研发有限公司 | The method that compound additive improves catalytic performance in catalytic coal gasifaction |
| CN110835554A (en) * | 2019-12-03 | 2020-02-25 | 内蒙古工业大学 | Method for catalyzing steam gasification of bituminous coal by carbide slag |
| CN110835555A (en) * | 2019-12-03 | 2020-02-25 | 内蒙古工业大学 | Method for modifying water vapor gasification performance of brown coal by using carbide slag |
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| CN106590752A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method for increasing activity and recovery rate of catalyst in catalytic gasification of coal |
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| CN110835555B (en) * | 2019-12-03 | 2021-06-18 | 内蒙古工业大学 | Method for modifying water vapor gasification performance of brown coal by using carbide slag |
| CN110835554B (en) * | 2019-12-03 | 2021-06-22 | 内蒙古工业大学 | Method for catalyzing steam gasification of bituminous coal by carbide slag |
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