CN104941624A - Catalyst for catalytic coal gasification and preparation method of catalyst - Google Patents
Catalyst for catalytic coal gasification and preparation method of catalyst Download PDFInfo
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Abstract
The invention provides a catalyst for catalytic coal gasification and a preparation method of the catalyst, and belongs to the technical field of catalytic coal gasification. The catalyst and the preparation method have the advantages that the active ingredients of the catalyst can be effectively retained, and the inactivation and the run-off of the alkali metal catalyst are effectively avoided, so that the catalyst retains higher catalytic activity under the equivalent additive amount, the bonding and reacting degree of alkali metal and mineral substances in coal ash is reduced, and the problem of high possibility of slagging is solved. The catalyst comprises a carrier and an alkali metal compound loaded on the carrier; the carrier comprises a compound with variable valence metal elements; the compound with the variable valence metal elements has oxygen vacancy in a lattice structure of the compound; the carrier has an alkaline site used for adsorbing metal ions. The catalyst can be used for the catalytic coal gasification process.
Description
Technical field
The present invention relates to catalytic coal gasifaction field, particularly relate to a kind of catalytic coal gasifaction Catalysts and its preparation method.
Background technology
Catalytic coal gasifaction preparing natural gas technology is the innovation to traditional coal gasification technology, by introduce can simultaneously catalytic water gas shift reaction, water gas shift reaction and CO/H
2the catalyst of methanation reaction, can generate in low temperature, middle pressure the gas being rich in methane.
Usually, the catalyst that catalytic coal gasifaction technology uses mainly contains the inorganic compound of alkali metal, alkaline-earth metal and transition metal etc., wherein, the catalytic activity of base metal catalysts is relatively better, the introducing of base metal catalysts effectively can reduce reaction temperature, improve reaction rate, and improves the yield of object product.But the activity of base metal catalysts is unstable, and its active component alkali metal often has higher mobility, causes running off serious at the temperature province inner catalyst of generating gasification and methanation reaction, thus reduce catalytic effect; Simultaneously alkali metal easily with the reaction of coal ash mineral formed catalytically inactive containing alkali cpd, and greatly reduce the ash fusion point of coal, cause gasification ash erosion and then system shutdown.
In prior art, when using base metal catalysts, in order to ensure preferably catalytic effect, being generally the addition by improving catalyst, usually needing interpolation 10% even higher.But too high catalyst loading not only causes catalyst high cost, but also follow-up cost when carrying out recycling to catalyst is too increased.
Summary of the invention
The invention provides a kind of catalytic coal gasifaction Catalysts and its preparation method, efficiently can retain the active component of catalyst, effectively avoid inactivation and the loss of alkali metal ion, thus make catalyst keep higher catalytic activity under equal addition, but also reduce alkali metal with the combination of coal ash mineral and the extent of reaction, solve easy clogging problems.
For achieving the above object, the present invention adopts following technical scheme:
On the one hand, the invention provides a kind of catalytic coal gasifaction catalyst, comprise carrier and load to the alkali metal compound on described carrier, described carrier comprises the compound of variable valent metal element, the compound of described variable valent metal element has oxygen defect in its lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion.
Wherein, the basic sites for adsorbing alkali metal ion in described carrier can for O
-or N
-.
Preferably, the compound of described variable valent metal element comprises the complex chemical compound of any one or multiple composition in the compound of iron, manganese, copper, cerium, lanthanum, chromium, vanadium, molybdenum, zirconium.
Alternatively, described carrier also comprises aluminium element.
Particularly, described carrier is blast-furnace slag, industrial residue.
Particularly, described carrier is prepared from by sol-gal process.
Further, the quality of described alkali metal compound accounts for the percentage of described catalyst gross mass is 3% ~ 30%.
Further, the quality of described alkali metal compound accounts for the percentage of described catalyst gross mass is 5% ~ 15%.
Particularly, described carrier has magnetic.
On the other hand, the present invention also provides a kind of preparation method of catalytic coal gasifaction catalyst, comprising:
Alkali metal compound is provided;
There is provided carrier, described carrier comprises the compound of variable valent metal element, and the compound of described variable valent metal element has oxygen defect in its lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion;
Described alkali metal compound is loaded on described carrier, to form catalytic coal gasifaction catalyst.
The invention provides a kind of catalytic coal gasifaction Catalysts and its preparation method, described catalyst comprises carrier and loads to the alkali metal compound on described carrier, wherein, carrier comprises the compound of variable valent metal element, there are some oxygen defects in its lattice structure, in catalytic coal gasifaction process, oxygen atom in gasifying agent can enter in this defect to maintain the balance of whole lattice system, like this, carrier surface just provides a large amount of active oxygens that can carry out redox reversible reaction, these oxygen can activate alkali metal ion under lower than alkali metal compound dissociation temperature, constantly provide " raw material O " for forming catalytic active component M-O-C (M is alkali metal), avoid the inactivation of catalyst, and the basic sites also had in carrier for adsorbing alkali metal ion, abundant electronics can be provided, to alkali metal ion, there is strong attraction, adsorb alkali metal ion firmly, avoid the loss of alkali metal ion, like this, carrier is combined with the alkali metal ion degree of depth, effectively formed with carbonaceous particle reaction and remain more M-O-C active component in the warm area of generating gasification and methanation reaction further, thus ensure that catalyst keeps higher catalytic activity under equal addition,
In addition, basic sites attracts alkali metal ion consumingly, and Reverse transcriptase alkali metal, with the combination of coal ash mineral and the extent of reaction, prevents alkali metal ion to combine with coal ash and forms low fused matter, thus avoid the reduction of the ash fusion point of coal, solve easy clogging problems thus.
Accompanying drawing explanation
The flow chart of the preparation method of the catalytic coal gasifaction catalyst that Fig. 1 provides for the embodiment of the present invention;
The gasification result comparison diagram of the employing prior art catalyst that Fig. 2 provides for the embodiment of the present invention and catalyst of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
On the one hand, embodiments provide a kind of catalytic coal gasifaction catalyst, comprise carrier and load to the alkali metal compound on described carrier, described carrier comprises the compound of variable valent metal element, the compound of described variable valent metal element has oxygen defect in its lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion.
In the catalytic coal gasifaction catalyst that the embodiment of the present invention provides, described catalyst comprises carrier and loads to the alkali metal compound on described carrier, wherein, carrier comprises the compound of variable valent metal element, there are some oxygen defects in its lattice structure, in catalytic coal gasifaction process, oxygen atom in gasifying agent can enter in this oxygen defect to maintain the balance of whole lattice system, like this, carrier surface just provides a large amount of active oxygens that can carry out redox reversible reaction, these oxygen can activate alkali metal ion under lower than alkali metal compound dissociation temperature, constantly provide " raw material O " for forming catalytic active component M-O-C (M is alkali metal), avoid the inactivation of catalyst, and, described carrier also has the basic sites for adsorbing alkali metal ion, it can provide abundant electronics, to alkali metal ion, there is strong attraction, adsorb alkali metal ion firmly, avoid the loss of alkali metal ion, like this, carrier is combined with the alkali metal ion degree of depth, effectively formed with carbonaceous particle reaction and remain more M-O-C active component in the warm area of generating gasification and methanation reaction further, thus ensure that catalyst keeps higher catalytic activity under equal addition,
In addition, basic sites attracts alkali metal ion consumingly, and Reverse transcriptase alkali metal, with the combination of coal ash mineral and the extent of reaction, prevents alkali metal ion to combine with coal ash and forms low fused matter, thus avoid the reduction of the ash fusion point of coal, solve easy clogging problems thus.
In embodiments of the present invention, the alkali metal compound loaded on carrier can be the compound of the alkali metals such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), can be preferably the compound of potassium.Particularly, alkali metal compound can be provided as alkali metal oxide or alkaline metal salt.Such as, can be potash, potassium hydroxide, potassium acetate, potassium sulfate, potassium oxalate, potassium nitrate etc., can be preferably potash.
Particularly, in the catalyst, the percentage that the quality of alkali metal compound accounts for catalyst gross mass can be 3% ~ 30%, can be preferably 5% ~ 15%, such as 5%, 7%, 8%, 10%, 11%, 13%, 15% etc.
Variable valent metal element refers to more than one of its chemical valence, may have two, or more, but usually only has one of them valence state to be stable, has thus both been easy to oxidized being simultaneously also easy to and has been reduced.Such metallic element can be such as iron, manganese, copper, cerium, lanthanum, chromium, vanadium, molybdenum, zirconium etc.In the embodiment of the present invention, can select in them any one or its any combination.Preferably, can be at least one in Cu, Mn, Fe, Ce.Therefore, particularly, the compound of variable valent metal element can be the compound of any one metallic element above-mentioned, also can be the complex chemical compound of above-mentioned any Determination of multiple metal elements composition.
Further, the compound of variable valent metal element can be its oxide, as iron oxide, cupric oxide, nickel hydroxide etc.; Also can be salt, as ferric nitrate, copper sulphate, cerium oxalate etc.Certainly, such compound is not limited thereto, and can also be the compound of these oxides or salt, and in a word, as long as there is oxygen defect in such compound, no further details to be given herein in the present invention.
In embodiments of the present invention, can be O for adsorbing the basic sites of alkali metal ion in carrier
-, N
-deng.O
-, N
-abundant electronics can be provided, to alkali metal ion, there is strong attraction, restrained effectively the loss of alkali metal, simultaneously, this competitive binding can also suppress alkali metal ion to combine with the mineral matter in coal ash, prevent alkali metal ion to combine with coal ash and form low fused matter, thus avoid the reduction of the ash fusion point of coal, solve clogging problems thus, widened the scope of application of coal, even the higher coal of content of mineral substances also applicable alkali metal compound as catalyst.
In embodiments of the present invention, the element that can strengthen frame strength and hardness in carrier, can also be comprised, such as aluminium (Al) element, thus effectively strengthen the mechanical strength of carrier, reduce wear.
It is an option that carrier can be prepared voluntarily, also can directly select the current material meeting above-mentioned requirements.
If select to prepare carrier voluntarily, sol-gal process is generally selected to prepare: to be first dissolved in by the compound of variable valent metal in solvent and to add the mixing of a certain amount of citric acid, stir, at low temperatures water is evaporated, form colloid, drying process afterwards, grinding, prepares required product after high-temperature calcination.To comprise variable valent metal element compound series Ce, Mn and Cu, the detailed process preparing carrier with sol-gal process can be:
Take a certain amount of cerous nitrate, manganese nitrate, copper nitrate, with citric acid mixing, stir;
Under the low temperature of 40 ~ 90 DEG C, water is evaporated formation colloid, wherein, low temperature described in this step preferably 40 ~ 50 DEG C, such low temperature contributes to producing more pore in inside configuration, thus increases specific area;
Drying process is carried out, grinding at 105 ~ 120 DEG C, preferably 110 DEG C;
Calcine under the high temperature of 700 ~ 800 DEG C.
The carrier prepared voluntarily by sol-gal process can have good apparent structure, be easy to base metal catalysts load, make the Multicomponent of formation carrier realize Homogeneous phase mixing at molecular level simultaneously, in nanometer range, realize the diffusion between component, reaction is more easily carried out.Sol-gal process is preferably applicable to the preparation containing II ~ VI compounds of group carrier.
If selection current material, preferably directly blast-furnace slag, industrial residue etc. can be adopted.Blast-furnace slag, industrial residue normally smelt iron produce a kind of byproduct, its chemical composition depend in material composition, smelt iron kind, method of operating and smelting process the working of a furnace change.Generally, the compound of a small amount of Mn, Ca, Cu and some other elements is also contained than iron.Preferably, existing blast-furnace slag, industrial residue are used as before carrier, can process prior to carrying out drying under the high temperature of 105 ~ 120 DEG C, preferably 110 DEG C in advance, then pulverizing, being sized to suitable particle diameter scope.
Advantageously, after the catalyst using the embodiment of the present invention to provide carries out catalytic coal gasification, screening mode can be adopted to reclaim catalyst.Particularly, in embodiments of the present invention, can by pulverize, Sieving and casing time make the particle diameter of catalyst be greater than the particle diameter of coal dust, like this, because alkali metal ion is attached on carrier effectively, by the size difference of catalyst and coal dust, after gasification reaction, just can pass easily through screening catalyst is separated from coal dust lime-ash, and then greatly reduce the energy consumption of catalyst recovery operation.
In addition, also advantageously, in the embodiment of the present invention, carrier has magnetic usually, like this, because alkali metal ion is attached on carrier effectively, adopt magnetic means just the base metal catalysts loaded on carrier can be returned, and then greatly reduce the energy consumption of catalyst recovery operation.
Base metal catalysts way of recycling conventional is at present that washing is reclaimed, but need to carry out high enrichment process before the base metal catalysts aqueous solution reclaimed utilizes again, energy consumption is high, and only can recovery section soluble alkali metal catalyst by washing, in course of reaction alkali metal with coal ash mineral reaction define insolubility alkali metal compound cause washing the rate of recovery reduce, technique macroeconomic is reduced greatly.By contrast, the catalytic coal gasifaction catalyst that the embodiment of the present invention provides adopts simple screening or magnetic means to get final product recycling, not only greatly save energy consumption and water consumption, and because be not limited to the catalyst that can only reclaim soluble fraction, also substantially increase the rate of recovery.
It should be noted that, adopt the catalyst that the embodiment of the present invention provides, in catalytic coal gasifaction process, the addition of catalyst, namely M/C mass ratio can be 1 ~ 20%, and be preferably 3 ~ 15%, more excellent is 5 ~ 10%.Because carrier high-efficiency remains catalytic active component alkali metal, therefore, in catalytic coal gasifaction process, catalyst just can keep higher catalytic activity under relatively low addition, realizes efficient catalytic effect, has saved catalyst cost.
As shown in Figure 1, the embodiment of the present invention additionally provides a kind of preparation method of catalytic coal gasifaction catalyst, specifically can comprise:
S1, provide alkali metal compound; Particularly, this alkali metal compound can be the K such as potash, potassium hydroxide salt;
S2, provide carrier, described carrier comprises the compound of variable valent metal element, and the compound of described variable valent metal element has oxygen defect in lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion;
S3, alkali metal compound is loaded on carrier, to form catalytic coal gasifaction catalyst; Particularly, loading process can adopt wet impregnation, the water-soluble or ethanol by the K salt in S1, form K salting liquid, then by carrier impregnation in this K salting liquid, after through 110 DEG C of dryings, pulverize, be sized to suitable particle diameter scope, shaping catalytic coal gasifaction catalyst can be obtained; Certainly, other carrying method be suitable for also can be adopted to load on carrier by K salt, and the present invention does not limit this.
The preparation method that the embodiment of the present invention provides, can simply, easily alkali metal is loaded on the carrier of the compound comprising variable valent metal element, this carrier can retain alkali metal ion efficiently, avoid it to run off, thus guarantee that catalyst keeps higher catalytic activity under equal addition, and the combination of alkali metal with coal ash mineral of this carrier Reverse transcriptase, stop it to form eutectic, so also improve that base metal catalysts causes be easy to clogging problems.
In order to elaborate the catalytic coal gasifaction Catalysts and its preparation method that the embodiment of the present invention provides further, be described with specific embodiment below.
Adopt coal sample as experimental analysis raw material, first carry out coal analysis to it, in table 1, wherein, table 1a is Industrial Analysis, the elementary analysis of Erdos coal; Table 1b is the ash component analysis of Erdos coal; Table 1c is the ash fusion point analysis of Erdos coal.
Table 1a
Remarks: in table 1a, M
adrepresent air oxygen detrition Water Under and divide content; A
adrepresent content of ashes under air oxygen detrition condition; V
adrepresent volatile matter content under air oxygen detrition condition; F
cadrepresent fixed carbon content under air oxygen detrition condition; C
drepresent carbon element content under drying condition; H
drepresent protium content under drying condition; N
drepresent nitrogen element content under drying condition; S
drepresent sulfur content under drying condition.
Table 1b
Table 1c
Coal sample drying, fragmentation, screening process are obtained the coal particle of 40 ~ 80 order particle size range, as the raw material coal dust of following embodiment, add homemade fluidized-bed reactor after raw material coal dust carrying alkali metal catalyst and carry out gasification reactivity evaluation, appreciation condition is: temperature 700 DEG C, pressure 3.5MPa, steam quality of pc than 1.5, solid retention time 2h.
Comparative example 1
Prepare carrying alkali metal sylvite catalyst coal dust, take a certain amount of potash (10% of quality of pc) to be dissolved in the water and to make the aqueous solution, this aqueous solution is sprayed on while stirring in a certain amount of coal dust, after leaving standstill, in drier, moisture is removed in drying, baking temperature is 105 ~ 180 DEG C, afterwards dry back loading alkali metal sylvite catalyst coal dust is carried out fluidized gasification evaluation, K/C mass ratio is 7.7%.
Comparative example 2
K catalyst in comparative example 1 fluidized gasification reaction lime-ash is carried out washing reclaim, washing temperature is 60 ~ 90 DEG C, grain slag mass ratio is 2 ~ 5, washing time is 15 ~ 30min, reclaiming the K amount obtained in ion chromatography water lotion is 72% of the initial K addition of comparative example 1, being washed Ethylene recov adds in the coal dust of comparative example 1 equivalent, and carry out drying by comparative example 1 the same terms afterwards, gasification is evaluated, K/C mass ratio is 5.6%.
Comparative example 3
Washing Ethylene recov comparative example 2 obtained adds in a certain amount of coal dust, ensures that K/C mass ratio is consistent with comparative example 1, and namely 7.7%, carry out drying by comparative example 1 the same terms afterwards, gasification is evaluated.
Comparative example 4
K catalyst in comparative example 3 fluidized gasification reaction lime-ash is carried out washing reclaim, washing process condition is with comparative example 2, reclaim the K amount obtained in ion chromatography water lotion and prepare 70% of K addition in supported catalyst coal dust for comparative example 2, being washed Ethylene recov adds in a certain amount of coal dust, ensure that K/C mass ratio is consistent with comparative example 1, namely 7.7%, carry out drying by comparative example 1 the same terms afterwards, gasification is evaluated.
Embodiment 1
Preparation load new catalyst coal dust (remarks: for simplicity, the catalytic coal gasifaction the catalyst cartridge herein embodiment of the present invention provided is called new catalyst, other parts are like this equally herein), take a certain amount of potash (10% of quality of pc) to be dissolved in the water and to make the aqueous solution, impregnated on carrier afterwards; Adopt sol-gal process self-control carrier: by cerous nitrate, manganese nitrate, copper nitrate, citric acid mixed solution transpiring moisture at 40 ~ 70 DEG C while stirring, the colloid of formation is carried out at 110 DEG C drying process, grinding, obtained after high-temperature calcination at 700 ~ 800 DEG C afterwards; Prepare novel raw catelyst: be impregnated in by wet chemical on carrier, afterwards it is carried out at 105 ~ 180 DEG C drying process, by pulverizing, screening, obtain the new catalyst of 20 ~ 40 order particle size range; Added to for physically in coal dust by the new catalyst of preparation, mix, control K/C mass ratio is 7.7%.Load new catalyst coal dust is added fluidized-bed reactor and carries out gasification reactivity evaluation.
Embodiment 2
Reclaimed by new catalyst in embodiment 1 fluidized gasification reaction lime-ash, because its size is greater than pulverized coal particle, reclaim by screening process, and measure K amount on carrier, it is that embodiment 1 initially adds 94% of K amount.Added to by the new catalyst once reclaimed in the coal dust of embodiment 1 equivalent, K/C mass ratio is 7.2%, proceeds gasification reactivity evaluation.
Embodiment 3
Reclaimer operation the same manner as in Example 2 is carried out to embodiment 1 lime-ash that gasifies, the new catalyst once reclaimed is added in a certain amount of coal dust, ensure that K/C mass ratio is consistent with embodiment 1, namely 7.7%, carry out gasification reactivity evaluation.
Embodiment 4
Reclaimer operation the same manner as in Example 2 is carried out to embodiment 3 lime-ash that gasifies, and K amount on carrier is measured, its be embodiment 3 load once reclaim that the total K of new catalyst coal dust measures 93%.The new catalyst of secondary recovery is added in a certain amount of coal dust, ensure that K/C mass ratio is consistent with embodiment 1, namely 7.7%, carry out gasification reactivity evaluation.
Embodiment 5
Preparation load new catalyst coal dust, takes a certain amount of potash (10% of quality of pc) and is dissolved in the water and makes the aqueous solution, impregnated on carrier afterwards; Adopt current material-blast-furnace slag as carrier, its composition is mainly the oxide of lanthanum, manganese, copper, iron, aluminium; Wet chemical be impregnated on carrier, afterwards it is carried out at 105 ~ 180 DEG C drying process, by pulverizing, screening, obtain the new catalyst of 20 ~ 40 order particle size range; Added to for physically in coal dust by the new catalyst of preparation, mix, control K/C mass ratio is 7.7%.Load new catalyst coal dust is added fluidized-bed reactor and carries out gasification reactivity evaluation.
Embodiment 6
Reclaimed by new catalyst in embodiment 5 fluidized gasification reaction lime-ash, because its size is greater than pulverized coal particle, reclaim by screening process, and measure K amount on carrier, it is that embodiment 5 initially adds 87% of K amount.Added to by the new catalyst once reclaimed in the coal dust of embodiment 5 equivalent, K/C mass ratio is 7.7%, carries out gasification reactivity evaluation.
Blank example
Do not adopt catalyst, directly adopt raw coal to carry out gasification evaluation, the gasification result with above-mentioned comparative example, embodiment contrasts.Specifically in table 2, Fig. 2.
Table 2 gasification result contrasts
Fig. 2 and table 2 shows the data that the gasification result using the base metal catalysts rate of recovery, efficiency of carbon con version, methane yield and slagging scorification situation as index to each experiment is evaluated.Can be found from data shown in Fig. 2, table 2: according to the contrast of comparative example 1 ~ 4, embodiment 1 ~ 6 and blank example, adopt new catalyst, carrier high-efficiency remains K, K is effectively avoided to run off, and carrier is with potash generation strong interaction, the active oxygen that redox reversible reaction can occur constantly is provided, effectively avoids the inactivation of catalytic active component K-O-C, make to maintain higher catalytic activity, thus achieve higher efficiency of carbon con version and methane yield.
Simultaneously according to the contrast of comparative example 1 ~ 4, embodiment 1 ~ 6, adopt new catalyst, because carrier is to the strong sucking action of K, also greatly reduce K to combine and the extent of reaction with coal ash mineral simultaneously, effectively improve because base metal catalysts is combined the easy clogging problems caused with coal ash mineral.
In addition, according to the contrast of comparative example 1-4, adopt pure potassium carbonate catalyst, running off and K loss because there is K in gasification, causing catalytic activity to reduce, its efficiency of carbon con version and methane yield reduce, and according to the contrast of embodiment 1-5, adopt new catalyst, reclaim catalyst by pure physical means such as screenings, greatly reduce the energy consumption of catalyst recovery operation, and its rate of recovery is significantly higher than washing recovery.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still in the protection domain of the invention.
Claims (10)
1. a catalytic coal gasifaction catalyst, it is characterized in that, described catalyst comprises carrier and loads to the alkali metal compound on described carrier, described carrier comprises the compound of variable valent metal element, the compound of described variable valent metal element has oxygen defect in its lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion.
2. catalyst according to claim 1, is characterized in that, the described basic sites for adsorbing alkali metal ion is selected from O
-or N
-.
3. catalyst according to claim 1, is characterized in that, the compound of described variable valent metal element comprises the complex chemical compound of any one or multiple composition in the compound of iron, manganese, copper, cerium, lanthanum, chromium, vanadium, molybdenum, zirconium.
4. catalyst according to claim 1, is characterized in that, described carrier also comprises aluminium element.
5. the catalyst according to any one of Claims 1 to 4, is characterized in that, described carrier is blast-furnace slag, industrial residue.
6. the catalyst according to any one of Claims 1 to 4, is characterized in that, described carrier is prepared from by sol-gal process.
7. the catalyst according to any one of Claims 1 to 4, is characterized in that, the percentage that the quality of described alkali metal compound accounts for described catalyst gross mass is 3% ~ 30%.
8. the catalyst according to any one of Claims 1 to 4, is characterized in that, the percentage that the quality of described alkali metal compound accounts for described catalyst gross mass is 5% ~ 15%.
9. the catalyst according to any one of Claims 1 to 4, is characterized in that, described carrier has magnetic.
10. a preparation method for catalytic coal gasifaction catalyst, is characterized in that, comprising:
Alkali metal compound is provided;
There is provided carrier, described carrier comprises the compound of variable valent metal element, and the compound of described variable valent metal element has oxygen defect in its lattice structure, and described carrier has the basic sites for adsorbing alkali metal ion;
Described alkali metal compound is loaded on described carrier, to form catalytic coal gasifaction catalyst.
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| CN107486244B (en) * | 2016-06-13 | 2020-04-28 | 中国石油化工股份有限公司 | Coal catalytic gasification catalyst and preparation method thereof |
| CN106423132A (en) * | 2016-09-22 | 2017-02-22 | 新奥科技发展有限公司 | Catalyst for catalytic coal gasification as well as catalytic coal gasification method and device |
| CN109097135A (en) * | 2018-07-17 | 2018-12-28 | 安徽大地节能科技有限公司 | A kind of preparation method of low slagging biomass granule fuel |
| CN111760576A (en) * | 2019-04-02 | 2020-10-13 | 宁夏大学 | Preparation method of catalyst for methane synthesis from coal gas |
| CN114797904A (en) * | 2022-04-15 | 2022-07-29 | 新奥科技发展有限公司 | Application of supported sodium catalyst in catalytic coal gasification reaction |
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