CN106753563A - A kind of method for improving char gasification reactivity - Google Patents

A kind of method for improving char gasification reactivity Download PDF

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Publication number
CN106753563A
CN106753563A CN201611223268.7A CN201611223268A CN106753563A CN 106753563 A CN106753563 A CN 106753563A CN 201611223268 A CN201611223268 A CN 201611223268A CN 106753563 A CN106753563 A CN 106753563A
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coal
sodium
gasification
calcium
carbonate
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CN106753563B (en
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高美琪
吕鹏
杨志荣
李凡
白永辉
朱生华
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Taiyuan University of Technology
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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
    • 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
    • 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
    • C10J2300/0996—Calcium-containing inorganic materials, e.g. lime

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Coke Industry (AREA)

Abstract

The invention discloses a kind of method that char gasification reactivity is improved in catalytic coal gasification technique, it is addition calcium carbonate and the sodium carbonate in raw coal, the calcium carbonate and sodium carbonate is carried on raw coal, be prepared into and contain calcium carbonate 1.25~2.5%, the load calcium sodium coal of sodium carbonate 0.4~1%.By load calcium sodium coal and the H2O/CO2Polynary gasifying agent carries out gasification reaction, shows and is much better than pure H2O or pure CO2Gasification activity, improve polynary gasifying agent for the gasification activity of coal tar in crushed coal pressure gasifying technique, promote the degree of gasification reaction cooperative effect under higher temperature.

Description

A kind of method for improving char gasification reactivity
Technical field
The invention belongs to the catalytic gasification technical field of coal, it is related to many vigour agent crushed coal pressure gasification techniques, particularly The method for being related to improve polynary gasifying agent and char gasification reaction rate in polynary gasifying agent crushed coal pressure gasifying technique.
Background technology
Coal gasification is the tap of the clean conversion of coal, is one of important channel of development Modern Coal-based Chemical technology.At present, coal system The Coal Chemical Engineering Project of new generation that synthetic natural gas has been first developed as China, and the key of natural gas from coal is Coal Gasification Technology Selection.
Compared to entrained flow bed gasification technology and moving bed pressurised liquid deslagging gasification technology, moving bed pressurization oven for discharging solid ash gas Change technology by feat of its cost of investment it is low, power consumption is low, technology maturation, stable and have in terms of synthetic natural gas The features such as innate advantage, it has also become the Coal Gasification Technology of coal synthetic natural gas most competitiveness.
However, in moving bed pressurization oven for discharging solid ash coal gasifying process, to ensure dry method ash discharge, excessive water need to be passed through and steamed Gas reduces furnace temperature, so may result in a large amount of phenol wastewater and produces.Additionally, coal gas CO after low-temp methanol is washed2Concentration compared with Height, is directly discharged to not only waste carbon source in air, is also unfavorable for the requirement of energy-saving and emission-reduction.
By CO2Stove is returned as gasifying agent and substitute part vapor, realize coal tar with polynary gasifying agent（Vapor+CO2）Gas Change reaction, then can solve the above problems well.The method can farthest utilize CO2, realize water saving, emission reduction, nothing The efficient broken coal dry ash extraction pressurized gasification advantage of pollution.
Due to coal tar and CO2The reactivity of gasification is compared with coal tar and H2Reactive low, the CO of O gasifications2Returning stove will be in certain journey The gasification activity of coal tar is influenceed on degree, or even reduces gasification reaction speed.Catalytic coal gasifaction has in raising gasification reaction speed The advantage of gasification reaction temperature is reduced while rate.
Alkaline earth metals calcium has the characteristics of being catalyzed coal tar with polynary gasifying agent generation gasification reaction generation cooperative effect, should Feature can to a certain extent improve the reaction rate that coal tar gasifies with polynary gasifying agent.But, due to calcium easy-sintering, and its Catalytic capability with access times increase and gasification temperature rising and decline, so as to cause catalytic gasification reaction rate drop It is low.Therefore, seek a kind of material that can suppress calcium sintering phenomenon in catalytic gasification course of reaction, by its with calcium collectively as Composite catalyst is catalyzed the gasification reaction of coal tar and polynary gasifying agent, to improve the stability of calcium, and further improves gasification Reaction, then seem extremely important.
The content of the invention
It is an object of the invention to provide a kind of method that char gasification reactivity is improved in catalytic coal gasification technique, By the load lower content on raw coal containing calcium predecessor and predecessor containing sodium, for polynary gasifying agent crushed coal pressure gasifying work In skill, to improve the gasification activity of coal tar, the efficient utilization of coal resources is realized.
The method for improving char gasification reactivity of the present invention is addition calcium carbonate and the sodium carbonate in raw coal, is made described Calcium carbonate and sodium carbonate are carried on raw coal, are prepared into load calcium sodium coal.
Wherein, the calcium carbonate mass fraction for containing in the load calcium sodium coal is 1.25~2.5%, sodium carbonate mass fraction It is 0.4~1%.
Preferably, the present invention is that the calcium carbonate and sodium carbonate are carried on raw coal using infusion process.
Specifically after the calcium carbonate, sodium carbonate are mixed with raw coal, adding water mixing and stirring, made after drying It is standby to obtain loading calcium sodium coal.
Can also be that the calcium carbonate and sodium carbonate are hybridly prepared into solution, add raw coal to be well mixed, drying is obtained Load calcium sodium coal.
Source and cost in view of raw material, the calcium carbonate added in the present invention can be lime stone, and sodium carbonate can be Soda ash.
Under the gasification temperature of catalytic coal gasification, calcium carbonate can be changed into Cao Catalyst active component, sodium carbonate It is converted into the catalytic active components such as metallic sodium or sodium oxide molybdena.
To coal tar and polynary gasifying agent（H2O+CO2）When the gasification reaction of generation is catalyzed, calcium can play very strong Catalytic action, so as to cause the generation of cooperative effect so that the reaction rate that coal tar gasifies with polynary gasifying agent is significantly larger than coal It is burnt with single gasifying agent（H2O or CO2）The reaction rate of gasification.But, the activity of calcium treating gasification reaction can be with its circulation time Several increases and declines, while calcium can also be sintered at relatively high temperatures, causes the reduction of catalysis activity, and then cause collaboration The decline of effect degree even disappears.Because the addition of the mobility that sodium shows when catalytic gasification reacts, therefore sodium can be with The stability and anti-caking power of calcium are improved to a certain extent, so as to further improve the journey of cooperative effect under higher temperature Degree.Meanwhile, compared to single gasifying agent, on the premise of calcium is present, the gasified reverse of the addition of sodium to coal tar in polynary gasifying agent Answering property improves the most obvious.
In the prior art, typically preferably catalytic effect can be ensured by improving the addition of catalyst, generally catalysis The addition of agent needs to reach 5% or even 10%（Metal in catalyst accounts for the percentage composition of coal sample）.And load is urged in the present invention Seldom, the calcium carbonate mass fraction contained in load calcium sodium coal is 1.25~2.5% to the amount of agent（The mass fraction of calcium be 0.5~ 1%）, sodium carbonate mass fraction is 0.4~1%（The mass fraction of sodium is 0.2~0.5%）, i.e. the addition of catalyst only needs 1% left The right side, just can reach preferable catalytic effect.It is so both cost-effective, economic and reliable, while relatively low alkali metal and alkaline-earth metal The extent of corrosion that is caused to gasification furnace furnace wall of load capacity it is also extremely small.
Therefore, the present invention is innovatively proposed using infusion process to be carried on lime stone and soda ash on coal and is made load calcium Sodium coal.Polynary gasifying agent can both have been improved for the gasification activity of coal tar in crushed coal pressure gasifying technique by the present invention, and The degree of cooperative effect under higher temperature can further be promoted.It is dry that the present invention is used for the pressurization of fixed bed broken coal to polynary gasifying agent The exploitation of method ash discharge Coal Gasification Technology has certain impetus with development, and is imitated with economical with preferable application prospect Benefit.
Brief description of the drawings
Fig. 1 is the efficiency of carbon con version curve that embodiment 1 carries out catalytic coal gasification at 800 DEG C.
Fig. 2 is the efficiency of carbon con version curve that embodiment 1 carries out catalytic coal gasification at 900 DEG C.
Fig. 3 is the efficiency of carbon con version curve of the catalytic coal gasification of embodiment 2.
Fig. 4 is the efficiency of carbon con version curve of the catalytic coal gasification of embodiment 3.
Fig. 5 is the efficiency of carbon con version curve of the catalytic coal gasification of embodiment 4.
Specific embodiment
Carry out further citing description to the present invention below by way of specific embodiment, but following embodiments do not constitute it is right Any limitation of the invention.On the premise of without departing substantially from the technology of the present invention solution, this area made for the present invention is common Any change or change that technical staff easily realizes, fall within scope of the presently claimed invention.
Embodiment 1：The coal gasification experiment of deliming five colours gulf.
Multicolored gulf coal is a kind of jet coal rich in inertinite from Xinjiang five colours gulf area, and its ash component is characterized as height Calcium, sodium high, low clay quasi-mineral.Multicolored gulf raw coal sample is obtained using quartering, after crush, ground, being sieved, selection grain Coal sample of the footpath less than 0.178mm is tested.
Multicolored gulf raw coal is carried out pickling to remove mineral matter therein using HCl and HF.First, by coal sample and 6mol/L HCl be mixed in beaker with the ratio of 1g/10mL, 12h is stirred at room temperature, the mixed liquor of coal sample and HCl is filtered, spend from Sub- water washing and filtering gained coal sample is until filtrate is in neutrality.Then, the HF of coal sample and 7.6mol/L after being washed through HCl is with 1g/ The ratio mixing of 10mL, repeats aforesaid operations.Obtained demineralization coal is placed in baking oven and is dried, be designated as deliming five colours gulf coal （WCWD）.
1g delimings five colours gulf coal, 0.025g calcium carbonate and 0.011g sodium carbonate are weighed in beaker, deionized water is added extremely Solid sample is totally submerged, 12h is stirred at room temperature, dried, be made the deliming five colours gulf coal of load calcium sodium（1%Ca-0.5%Na- WCWD）, it is placed in drier and preserves.
Using the F3 of multifunctional comprehensive thermal analyzer NETZSCH STA 449 to the deliming of above-mentioned load calcium sodium five colours gulf coal With polynary gasifying agent（H2O+CO2）The gasification reaction of generation carries out gasification activity test, while being distinguished with above-mentioned load calcium sodium coal With H2O or CO2The reactivity of single gasifying agent gasification is as a comparison.
Gasification experiment process is as follows：Coal sample of the 10mg particle diameters less than 0.178mm is weighed, is uniformly layered on flat crucible, Under the conditions of the argon gas of 40mL/min, with the heating rate of 10 DEG C/min, 800 DEG C and 900 DEG C are warming up to respectively, be passed through 200mL/ The polynary gasifying agent of min carries out gasification reaction, and polynary gasifying agent composition is 66.7%H2O+33.3%CO2.Remember per 2s in course of reaction Sample quality of record.
Under similarity condition, respectively with H2O and CO2For gasifying agent carries out gasification reaction, and record the sample matter in course of reaction Amount.
The computational methods of efficiency of carbon con version are as follows during coal gasification reaction：
。
Wherein,Refer to that gasification reaction starts the quality of preceding coal sample,The quality of sample when referring to that the reaction time is t, Refer to the quality of ash content after completion of the reaction.
With the gasification activity of average specific gasification reaction rate representation coal sample, its computational methods is as follows：
。
Wherein,Represent average specific rate（min-1）,Gasification reaction speed is represented,Represent reaction Efficiency of carbon con version when time is t.
Efficiency of carbon con version selection 20%~80%, is integrated to above formula, can obtain：
。
WhereinRepresent that efficiency of carbon con version reaches the time used by 80% from 20%.
Meanwhile, in order to compare coal tar and H2O+CO2Polynary gasifying agent gasification reaction process and coal tar gasify with single gasifying agent The difference of course of reaction is rightWithCompare.WhereinRefer to that coal tar occurs gasification reaction mistake with polynary gasifying agent The experiment value of average specific rate in journey,Refer to that coal tar and polynary gasifying agent occur average specific during gasification reaction The calculated value of gasification reaction speed, computing formula is as follows：
。
In the computing formula,The average specific rate of coal tar and steam gasification course of reaction is represented,Refer to coal tar and CO2The average specific rate of gasification reaction process.When/>When 1, then mean coal tar with The process that polynary gasifying agent occurs gasification reaction has cooperative effect to produce, and/Value is bigger, and cooperative effect is more obvious.
Additionally, with Δ K represent Ca-Na- coals with Ca- coals the reactivity when identical gasifying agent conditions of mixture ratios issues angerization Between difference, computing formula is as follows：
。
Δ K is bigger, then it represents that in the presence of calcium, and the addition of sodium is bigger to the raising degree of gasification activity.
Final experimental result is shown in Fig. 1, Fig. 2 and table 1.
As depicted in figs. 1 and 2, when gasification temperature is 800 DEG C and 900 DEG C, the deliming five colours gulf coal of the sodium of 1% calcium+0.5% is loaded With H2O and CO2Efficiency of carbon con version curve when Diversity gasifying agent reacts is respectively positioned on itself and H2O or CO2Independent gasification reaction On efficiency of carbon con version curve, i.e., in coal tar and H2In the gasification reaction of O, CO2Introducing do not result in the drop of gasification reaction speed It is low, it is improved largely on the contrary, show cooperative effect.
The deliming five colours gulf coal of deliming five colours gulf coal and the load sodium of 1% calcium+0.5% that 1% calcium of load is compared in table 1 exists Average specific rate when different gasifying agents are matched and/The size of value.As can be seen that load calcium sodium Sodium is added in the gasification activity for greatly enhancing coal tar in deliming five colours gulf coal, although the addition of sodium is not 800 DEG C when cooperative effect when causing that coal tar and Diversity gasifying agent occur gasification reaction further enhance（/Not compared with Big difference）, but compared with single gasifying agent, the gasification reaction when addition of sodium causes coal tar with polynary gasifying agent generation gasification reaction Speed is improved（Represented with Δ K）It is the most obvious.In addition, the addition of Na reduces the sintering degree of Ca, therefore, in higher temperature （900℃）Under, still show extremely strong cooperative effect ability.
Embodiment 2：The coal gasification experiment of deliming tin alliance.
According to the method for embodiment 1, tin alliance raw coal sample is obtained with quartering（The coal is one kind of In Xilingol League In Inner Mongolia Lignite rich in vitrinite point, its ash component is characterized as clay minerals matter high（>50%））, after being crushed, ground, being sieved, Coal sample of the particle diameter less than 0.178mm is chosen to be tested.Deliming tin alliance coal is obtained through pickling deliming（XMD）, then using dipping Method is made the deliming tin alliance coal of load calcium sodium（1%Ca-0.5%Na-XMD）（Deliming tin alliance's coal and calcium carbonate and the quality of sodium carbonate Than being 100: 2.5: 1）.
The deliming tin alliance coal gasification reactivity test for loading calcium sodium is same in multifunctional comprehensive thermal analyzer NETZSCH Carried out on the F3 of STA 449, with embodiment 1, selected gasification temperature is 800 DEG C for gasification experiment process and selected gasifying agent proportioning.
Using formula（1）Carry out the calculating of efficiency of carbon con version, the gasification activity formula of coal tar（3）The average specific gas for calculating Change reaction rate to represent, coal tar produces the strong and weak of cooperative effect to use when there is gasification reaction with polynary gasifying agent/Table Show, when/>When 1, show there is cooperative effect to produce, its value is bigger, and cooperative effect is more obvious, whereinBy formula（4） Calculated.Additionally, representing that 1%Ca-0.5%Na-XMD issues anger with 1%Ca-XMD in identical gasifying agent conditions of mixture ratios with Δ K Difference during change between reactivity, computing formula uses formula（5）.Δ K is bigger, then it represents that in the presence of calcium, and the addition of sodium is to gasification The raising degree of reactivity is bigger.Specific result of calculation is shown in Fig. 3 and table 2.
In Fig. 3, deliming tin alliance's coal of calcium sodium is loaded when there is gasification reaction with Diversity gasifying agent, equally showing Obvious cooperative effect, be embodied in deliming tin alliance's coal of the load sodium of 1% calcium+0.5% with H2O and CO2Diversity gasifies Efficiency of carbon con version curve when agent is reacted is respectively positioned on itself and H2O or CO2On the efficiency of carbon con version curve of independent gasification reaction, i.e., in coal Burnt and H2In the gasification reaction of O, CO2Introducing do not result in the reduction of gasification reaction speed, be improved largely on the contrary, show Cooperative effect is gone out.Deliming tin alliance's coal that this point can also load calcium from table 2 is flat with the deliming tin alliance coal of load calcium sodium Equal specific rate and/The size of value draws：For the deliming tin alliance coal for loading calcium sodium, its/Value Deliming tin alliance coal compared with load calcium is big, the cooperative effect when addition of sodium not only makes coal tar with polynary gasifying agent generation gasification reaction The raising of reaction rate is the most obvious when further enhancing, and making coal tar with polynary gasifying agent generation gasification reaction（With Δ K tables Show）.
Embodiment 3：The gasification experiment of tin alliance raw coal.
Tin alliance raw coal of the particle diameter in embodiment 2 less than 0.178mm is processed without deliming, is directly made of infusion process negative Carry the tin alliance coal of calcium sodium（1%Ca-0.5%Na-XM）（Tin alliance coal is 100: 2.5: 1 with the mass ratio of calcium carbonate and sodium carbonate）.Gas Change reactivity test is carried out on the F3 of multifunctional comprehensive thermal analyzer NETZSCH STA 449, gasification experiment process and selected With embodiment 1, selected gasification temperature is 800 DEG C to gasifying agent proportioning.
Efficiency of carbon con version and average specific rate are equally calculated, is compared coal tar and gasified reverse is occurred with polynary gasifying agent The power of seasonable generation cooperative effect, as a result such as Fig. 4 and table 3.
The tin alliance raw coal for loading calcium sodium also generates cooperative effect when there is gasification reaction with polynary gasifying agent.In Fig. 4, Compared to coal tar and H2The gasification reaction of O, load the sodium of 1% calcium+0.5% tin alliance raw coal with H2O and CO2Diversity gasifying agent During reaction, CO2Introducing do not result in the reduction of gasification reaction speed, be improved to some extent on the contrary, show collaboration Effect.
And from table 3 it is observed that load the sodium of 1% calcium+0.5% tin alliance raw coal with H2O and CO2Diversity gasifying agent During reaction,/>1, it can be equally demonstrated that cooperative effect is clearly present.Additionally, the comparing from Δ K can be seen that sodium Gasification reaction speed of the tin alliance raw coal for causing to load calcium sodium when being reacted with Diversity gasifying agent is added to improve most substantially, calcium Gasification reaction speed when sodium bimetal composite catalyst causes that coal tar reacts with polynary gasifying agent is significantly improved.
Embodiment 4：The coal gasification experiment of different calcium sodium load capacity deliming five colours gulf.
Deliming five colours gulf coal of the particle diameter of gained less than 0.178mm, load calcium sodium is obtained by infusion process in Example 1 Deliming five colours gulf coal（0.5%Ca-0.2%Na-WCWD）（Deliming five colours gulf coal is 100 with the mass ratio of calcium carbonate and sodium carbonate: 1.25∶0.4）.Gasification activity test is carried out on the F3 of multifunctional comprehensive thermal analyzer NETZSCH STA 449, gasification experiment , with embodiment 1, selected gasification temperature is 900 oC for process and selected gasifying agent proportioning.
Equally use formula（1）Carry out the calculating of efficiency of carbon con version, the gasification activity formula of coal tar（3）What is calculated is average Specific rate represents that coal tar produces the strong and weak of cooperative effect to use when there is gasification reaction with polynary gasifying agent/ Represent, when/>When 1, show there is cooperative effect to produce, its value is bigger, and cooperative effect is more obvious, whereinBy formula （4）Calculated.Equally represent 0.5%Ca-0.2%Na-WCWD with 0.5%Ca-WCWD in identical gasifying agent conditions of mixture ratios with Δ K Difference when issuing angerization between reactivity, computing formula uses formula（5）.Δ K is bigger, then it represents that in the presence of calcium, sodium plus Enter bigger to the raising degree of gasification activity.Experimental result is shown in Fig. 5 and Biao 4.
Fig. 5 is that the deliming five colours gulf coal for loading the sodium of 0.5% calcium+0.2% occurs the efficiency of carbon con version song of gasification reaction at 900 DEG C Line, it can be seen that load the sodium of 0.5% calcium+0.2% deliming the five colours gulf coal with H2O and CO2Carbon when Diversity gasifying agent reacts Conversion rate curve is respectively positioned on itself and H2O or CO2On the efficiency of carbon con version curve of independent gasification reaction, i.e., in coal tar and H2The gasification of O In reaction, CO2Introducing do not result in the reduction of gasification reaction speed, be improved largely on the contrary, show cooperative effect. Therefore there is gasification reaction in the lower content calcium coal tar that can be catalyzed same with the addition of sodium at relatively high temperatures with polynary gasifying agent When produce cooperative effect.And it can also be seen that the addition of sodium causes the deliming five colours gulf of the load sodium of 0.5% calcium+0.2% from table 4 Gasification reaction speed of the coal when being reacted with Diversity gasifying agent is improved most substantially, Fig. 5 and Biao 4 explanation calcium sodium bimetal composites Gasification reaction speed when catalyst causes that coal tar reacts with polynary gasifying agent is significantly improved（Represented with Δ K）.

Claims (6)

1. a kind of method for improving char gasification reactivity, is addition calcium carbonate and the sodium carbonate in raw coal, makes the calcium carbonate It is carried on raw coal with sodium carbonate, forms load calcium sodium coal, wherein, the calcium carbonate mass fraction contained in the load calcium sodium coal It is 1.25~2.5%, sodium carbonate mass fraction is 0.4~1%.
2. the method for improving char gasification reactivity according to claim 1, it is characterized in that using infusion process by the carbon Sour calcium and sodium carbonate are carried on raw coal.
3. it is according to claim 2 to improve the reactive method of char gasification, it is characterized in that being by the calcium carbonate, carbonic acid After sodium mixes with raw coal, water mixing and stirring is added, load calcium sodium coal is prepared after drying.
4. the method for improving char gasification reactivity according to claim 2, it is characterized in that by the calcium carbonate and carbonic acid Sodium is hybridly prepared into solution, adds raw coal to be well mixed, and drying obtains loading calcium sodium coal.
5. it is according to claim 1 to improve the reactive method of char gasification, it is characterized in that described calcium carbonate uses stone Lime stone.
6. it is according to claim 1 to improve the reactive method of char gasification, it is characterized in that described sodium carbonate uses Soviet Union Beat powder.
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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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Publication number Priority date Publication date Assignee Title
CN107033942A (en) * 2017-06-09 2017-08-11 太原理工大学 A kind of method that burnt catalytic gasification that gasifies is the richest in alkanisation
CN107033942B (en) * 2017-06-09 2020-10-13 太原理工大学 Method for catalytic gasification of gasified coke to enrich methanation
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
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

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