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CN114797904B - Application of a supported sodium catalyst in catalytic coal gasification reaction - Google Patents

Application of a supported sodium catalyst in catalytic coal gasification reaction Download PDF

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CN114797904B
CN114797904B CN202210397075.2A CN202210397075A CN114797904B CN 114797904 B CN114797904 B CN 114797904B CN 202210397075 A CN202210397075 A CN 202210397075A CN 114797904 B CN114797904 B CN 114797904B
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catalyst
sodium
aluminum
coal
gasification reaction
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CN114797904A (en
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王会芳
刘雷
李克忠
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ENN Science and Technology Development Co Ltd
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ENN Science and Technology Development Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/053—Sulfates
    • B01J27/055—Sulfates with alkali metals, copper, gold or silver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/12—Silica and alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
    • B01J23/04—Alkali metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/10—Heat treatment in the presence of water, e.g. steam
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)

Abstract

The present disclosure relates to an application of a supported sodium catalyst in a catalytic coal gasification reaction, the catalyst comprising a catalyst active component and a carrier, the catalyst active component being a sodium salt catalyst, the carrier being an aluminum-containing carrier, the catalyst forming sodium salt in aluminate form in the gasification reaction. The supported sodium catalyst provided by the disclosure can form sodium salt in aluminate form in gasification reaction, so that the catalyst deactivation can be avoided, and the catalyst recovery process can be simplified; meanwhile, the melting point of the coal ash can be effectively improved, slag bonding of the gasification furnace is avoided, and the adaptability of the catalytic gasification coal can be widened.

Description

Application of supported sodium catalyst in catalytic coal gasification reaction
Technical Field
The present disclosure relates to the field of catalytic gasification of coal, and in particular, to an application of a supported sodium catalyst in a catalytic gasification reaction, and more particularly, to an application of a supported sodium catalyst in a catalytic gasification reaction and a method for preparing methane by coal gasification.
Background
The catalytic gasification technology of coal is the most economical and effective way in preparing natural gas from coal, and the alkali metal catalyst is the most widely studied and applied catalyst system because of good catalytic activity of coal gasification and methanation.
The catalyst for catalytic gasification of coal is different from the traditional gas-solid phase catalyst concept due to the technical characteristics. In the process of preparing natural gas (methane) from coal, a catalyst is directly added to raw material coal, and as gasification reaction proceeds, the catalyst is discharged out of the gasification furnace with gasification ash. The characteristics of the coal catalytic gasification process determine that coal gasification catalysts need to face some challenges: on the one hand, the catalyst is directly added into coal, and under gasification reaction conditions, the catalyst is combined with minerals in the coal, especially easily with aluminum and silicon components, to form inert poorly soluble aluminosilicate, so that part of the catalyst is deactivated; on the other hand, the catalyst and the ash are discharged out of the furnace together, and the cost of the alkaline catalyst is high and the environment is polluted, so that the catalyst in the ash is required to be recycled by adopting a recycling process, and the catalyst exists in the form of aluminosilicate in the slag partially, so that the catalyst recycling cost is high. In addition, the alkali metal catalyst and minerals such as iron, calcium and the like in the coal ash easily form eutectic matters, so that the melting point of the coal ash can be reduced, slag bonding of the gasification furnace is caused, and the fluidized-state furnace is stopped, thereby influencing the long-period stable operation of the device. The existing alkali metal catalyst has high application cost and complex recovery process, and the coal type operation slagging risk matched with the low ash fusion point is high, so that the development of the catalytic gasification of the coal can be limited.
Accordingly, it is desirable to provide a coal gasification catalyst that has high catalytic activity and is easy to recycle, and that is capable of reducing the risk of slagging.
Disclosure of Invention
In order to solve the technical problems, the present disclosure provides an application of a supported sodium catalyst in a catalytic coal gasification reaction.
In a first aspect, the present disclosure provides the use of a supported sodium catalyst in a catalytic coal gasification reaction, the catalyst comprising a catalyst active component and a support, the catalyst active component being a sodium salt catalyst, the support being an aluminium-containing support, the catalyst forming sodium salt in aluminate form in the gasification reaction.
The present disclosure finds that when the catalyst defined in the present disclosure is applied to the catalytic gasification of coal, under gasification reaction conditions, the sodium salt portion of the catalyst is capable of being converted to sodium hydroxide and preferentially reacts with the aluminum support to form sodium salt in aluminate form; the sodium salt in aluminate form not only has good coal gasification activity, but also does not react with the silicon-aluminum minerals contained in the raw material coal; therefore, the supported sodium catalyst provided by the present disclosure not only can avoid catalyst deactivation, but also can keep the active components in the catalyst in the form of soluble salts, and can simplify the recovery process of the catalyst.
In order to ensure that sodium components and active aluminum atoms are fully reacted and converted into sodium aluminate and that newly generated sodium aluminate can be uniformly dispersed on an alumina carrier which does not participate in the reaction when the catalyst disclosed by the invention is applied, as a preferred technical scheme of the catalyst disclosed by the invention, the molar ratio of sodium element to aluminum element in the supported sodium catalyst is (0.7-1): 1, such as 0.8:1, 0.9:1 and the like.
If the addition amount of the sodium salt catalyst is too low, the amount of alumina which does not participate in the reaction is too high, and the generated sodium aluminate is small in amount and is tightly combined with the carrier, so that the sodium aluminate cannot fully contact with carbon in coal to influence the catalytic effect; if the addition amount of the sodium salt catalyst is too high, alumina is completely consumed, so that sodium aluminate is free of carrier dependence, the catalyst cannot be uniformly dispersed in the gasifier, and the catalytic effect is also affected.
As a preferred embodiment of the present disclosure, the aluminum-containing carrier contains alumina, or alumina and silica.
The aluminum-containing carrier of the present disclosure may be all alumina, or may be prepared from bauxite or the like whose main component is an aluminum-containing compound, and if prepared from bauxite or the like, the components contained in the aluminum-containing carrier may include alumina and silica.
The aluminum-containing carrier provided by the disclosure has the effect of improving the melting point of the coal ash, and because the aluminum oxide contained in the aluminum-containing carrier plays a role of a framework, the higher the aluminum oxide content is, the more framework components are, the fusion bonding of the coal ash particles can be effectively prevented, and the risk of slagging of the gasification furnace is further reduced. Therefore, the catalyst provided by the disclosure can be applied to coal with low melting point of coal ash, so that the catalytic activity can be effectively improved, slag bonding can be avoided, and the application range of coal catalytic gasification coal is widened.
In order to prevent the sodium salt catalyst from reacting with aluminum and silicon to generate inert aluminosilicate, as a preferable technical scheme of the disclosure, the mass ratio of the aluminum oxide to the silicon dioxide is preferably equal to or greater than 4, for example, the mass ratio of the aluminum oxide to the silicon dioxide is 4:1, 5:15.5:1, 6:1, 8:1, and the like.
As a preferred embodiment of the present disclosure, the aluminum-containing carrier is selected from any one or a combination of at least two of pretreated bauxite, pretreated aluminum hydroxide, or pretreated aluminum oxide.
As a preferred embodiment of the present disclosure, the pretreatment method includes a roasting treatment with water vapor of 600-800 ℃ (e.g., 620 ℃, 650 ℃, 680 ℃, 700 ℃, 720 ℃, 750 ℃, 780 ℃, etc.), preferably for 8-24 hours, e.g., 10 hours, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, etc.
The aluminum-containing carrier is pretreated in high-temperature vapor, a part of hydroxyl groups in the aluminum carrier are decomposed and removed at high temperature, and vapor molecules form hydrogen bonds around aluminum atoms, so that the strength of Al-O bonds is weakened, the coordination mode of the aluminum atoms is changed, the aluminum atoms are promoted to be exposed to form more acid sites, and the aluminum oxide and sodium salt are favorably reacted to generate sodium aluminate components.
As a preferred technical scheme of the present disclosure, the gasifying agent used in the coal gasification reaction is steam.
As a preferred embodiment of the present disclosure, the temperature of the coal gasification reaction is 700-800 ℃, for example 720 ℃, 740 ℃, 750 ℃, 760 ℃, 780 ℃, etc.
As a preferred embodiment of the present disclosure, the sodium salt catalyst is selected from soluble sodium salt, preferably any one or a combination of at least two of sodium carbonate, sodium sulfate or sodium hydroxide.
The sodium salt catalyst selected in the method is a soluble sodium salt catalyst, and exists in a soluble sodium salt form, such as sodium aluminate form or sodium carbonate, sodium sulfate or sodium hydroxide without morphological change in the coal gasification process, so that the catalyst can be recovered only through a water washing process when the catalyst is recovered later. Sodium catalyst in aluminate form in the recovered liquid can be directly loaded on coal for cyclic reaction, and other forms of sodium salts (such as sodium carbonate, sodium sulfate or sodium hydroxide) can be loaded on an aluminum carrier for further gasification reaction; the sodium catalyst is eventually recycled in the form of an aluminate for use in the coal catalytic gasification process.
As a preferred technical scheme of the present disclosure, the preparation method of the supported sodium catalyst includes: the sodium salt catalyst is supported on an aluminum-containing carrier by an impregnation method.
In a second aspect, the present disclosure provides a method of coal gasification to methane, the method comprising using the supported sodium catalyst of the first aspect.
When the catalyst provided by the disclosure is used for catalyzing coal gasification reactions, the supported sodium catalyst and raw coal (below 2 mm) can be fully and uniformly mixed, the obtained catalyst mixed coal sample is conveyed into a gasification furnace for reaction, and the supported sodium catalyst and the raw coal can be respectively conveyed into the gasification furnace for reaction.
As a preferred technical scheme of the present disclosure, in the method, the addition amount of the supported sodium catalyst is 2-10% of the mass of raw coal, for example, 3%, 4%, 5%, 6%, 7%, 8, 9% and the like. In the addition range, the catalyst can achieve a better catalytic effect and can avoid the influence of sodium salt catalyst migration into coal on the effective reaction of the sodium salt catalyst and the alumina carrier to convert into sodium aluminate.
As a preferred embodiment of the present disclosure, in the method, the gasification temperature is 700-800 ℃, for example 720 ℃, 740 ℃, 750 ℃, 760 ℃, 780 ℃, etc., and the gasifying agent used for gasification is steam.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
(1) The supported sodium catalyst provided by the disclosure can form sodium salt in aluminate form in the coal catalytic gasification reaction, and the aluminate form sodium salt not only has good coal gasification activity, but also can not react with silicon-aluminum mineral substances contained in raw material coal, so that the catalyst deactivation can be avoided;
(2) After the supported sodium catalyst provided by the disclosure is subjected to catalytic gasification reaction, the sodium salt catalyst still exists in the form of soluble sodium salt, and the catalyst can be recovered only by washing, so that the catalyst recovery process is simplified;
(3) The aluminum-containing carrier used by the catalyst can improve the melting point of coal ash, effectively prevent the coal ash particles from fusion bonding, reduce the risk of slagging of the gasifier, and enlarge the application range of coal catalytic gasification coal types.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
Example 1
The embodiment provides a supported sodium catalyst and a preparation method thereof.
(1) Roasting aluminum oxide for 8 hours under the water vapor condition of 700 ℃ to obtain an aluminum-containing carrier;
(2) 100g of an aluminum-containing carrier was immersed in a sodium sulfate solution having a concentration of 20wt%, and all the solutions were immersed on the aluminum-containing carrier, followed by drying, to obtain the supported sodium catalyst, wherein the molar ratio of sodium element to aluminum element was 0.8.
Examples 2 to 3
The embodiment provides a supported sodium catalyst and a preparation method thereof.
The difference from example 1 is that in this example, the molar ratio of sodium element to aluminum element was controlled to be 0.7 (example 2), 1 (example 3) by controlling the concentration of the sodium sulfate solution.
Comparative examples 1 to 2
The comparative example provides a supported sodium catalyst and a method of preparing the same.
The difference from example 1 is that in this comparative example, the molar ratio of sodium element to aluminum element was controlled to be 0.5 (comparative example 1), 1.3 (comparative example 2) by controlling the concentration of the sodium sulfate solution.
Example 4
The embodiment provides a supported sodium catalyst and a preparation method thereof.
(1) Roasting bauxite for 8 hours under the condition of 700 ℃ water vapor to obtain an aluminum-containing carrier, wherein the aluminum-containing carrier comprises the following components of aluminum oxide and silicon oxide in a mass ratio of 5;
(2) 100g of an aluminum-containing carrier was immersed in a 40wt% sodium hydroxide solution and then dried to obtain the supported sodium catalyst, wherein the molar ratio of sodium element to aluminum element was 0.8.
Example 5
The embodiment provides a supported sodium catalyst and a preparation method thereof.
The difference from example 4 is that in this example, bauxite is selected so that the mass ratio of alumina to silica in the resulting aluminum-containing support is 4.
Comparative example 3
The comparative example provides a supported sodium catalyst and a method of preparing the same.
The difference from example 4 is that in this comparative example, the supported sodium catalyst was obtained by directly impregnating bauxite with a sodium hydroxide solution and then drying it, without performing step (1).
Comparative example 4
The comparative example provides a supported sodium catalyst and a method of preparing the same.
The difference from example 4 is that in this comparative example, bauxite was selected as high alumina bauxite, and the mass ratio of alumina to silica in the resulting aluminum-containing carrier was 2.
Comparative example 5
The comparative example provides a catalyst which is sodium sulfate.
Comparative example 6
This comparative example provides a catalyst that is alumina.
Application example
The application example provides a method for preparing methane by coal gasification reaction.
(1) The catalyst was mixed with 100g of coal sample having a particle size of 2mm or less, wherein the amount of catalyst used was 2g (application example 1), 5g (application example 2) and 10g (application example 3).
(2) Activity test: 10g of the mixed catalyst coal sample obtained in the step (1) is reacted for 3 hours under the conditions that the pressure is 3.5MPa, the temperature is 700 ℃, the initial water-coal ratio is 0.3mL/h/g, and nitrogen is taken as blowing gas at the flow rate of 300 mL/min;
(3) Ash melting point test: the ash fusion property is measured according to national standard GB/T219, and ash fusion point data is obtained.
Performance test 1
The catalysts provided in examples 1 to 5 and comparative examples 1 to 4, and the sodium sulfate and alumina provided in comparative examples 5 and 6 were used as catalysts for coal gasification reaction, while no catalyst was added as a control, coal gasification reaction was performed with reference to the method of the (2) th step of application example 1, the collected gas was subjected to component analysis by gas chromatography, carbon conversion (carbon in gas phase/coal sample) was calculated, and sintering temperature test was performed with reference to the method of the (3) th step of application example 1, and experimental results are shown in table 1:
TABLE 1
Sample of Catalyst Carbon conversion/% Softening temperature DT/. Degree.C
Example 1 Example 1 98 1300
Example 2 Example 2 96 1350
Example 3 Example 3 97 1280
Example 4 Example 4 95 1250
Example 5 Example 5 94 1230
Comparative example 1 Comparative example 1 76 1220
Comparative example 2 Comparative example 2 80 1240
Comparative example 3 Comparative example 3 74 1200
Comparative example 4 Comparative example 4 85 1210
Comparative example 5 Sodium sulfate 70 1100
Comparative example 6 Alumina oxide 62 1200
Comparative example - 60 1150
According to the embodiment and the performance test, the supported catalyst provided by the disclosure has good coal gasification activity, the melting point of coal ash can be obviously improved, the slagging risk of the gasification furnace is reduced, methane is prepared by using the supported catalyst provided by the disclosure, and the carbon conversion rate can reach more than 94%.
As can be seen from comparison of examples 1-3 and comparative examples 1-2, the supported catalyst provided by the present disclosure has a more excellent catalytic effect in terms of the molar ratio of sodium to aluminum within the range defined by the present disclosure; as can be seen from the comparison of examples 4-5 and comparative examples 3-4, the aluminum-containing carrier provided in the present disclosure is preferably pretreated, and if the aluminum-containing carrier in the present disclosure contains silica, the amount of silica cannot be too high, otherwise the catalytic effect of the catalyst is affected; as can be seen from a comparison of examples and comparative examples 5 to 6, the supported catalyst provided by the present disclosure has an excellent catalytic effect.
Performance test 2
The coal gasification reactions were carried out with the catalyst provided in example 1 and in accordance with the methods of application examples 1 to 3, respectively, and the performance tests were carried out in accordance with performance test 1, and the results are shown in Table 2:
TABLE 2
Sample of Catalyst Carbon conversion/% Softening temperature DT/. Degree.C
Application example 1 Example 1 98 1300
Application example 2 Example 1 100 1350
Application example 3 Example 1 97 1280
As can be seen from table 2, the amount of the supported catalyst provided in the present disclosure is 2 to 10% of the mass of the raw coal, and excellent catalytic effect can be achieved.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1.一种负载型钠催化剂在催化煤气化反应中的应用，其特征在于，所述催化剂包括催化剂活性组分以及载体，所述催化剂活性组分为钠盐催化剂，所述载体为含铝载体，所述催化剂在气化反应中形成铝酸盐形式的钠盐；1. An application of a supported sodium catalyst in catalytic coal gasification reaction, characterized in that the catalyst comprises a catalyst active component and a carrier, the catalyst active component is a sodium salt catalyst, the carrier is an aluminum-containing carrier, and the catalyst forms a sodium salt in the form of an aluminate in the gasification reaction; 在所述负载型钠催化剂中，钠元素和铝元素的摩尔比为(0.7-1):1；In the supported sodium catalyst, the molar ratio of sodium element to aluminum element is (0.7-1):1; 所述含铝载体选自经过预处理的铝土矿、经过预处理的氢氧化铝或经过预处理的氧化铝中的任意一种或至少两种的组合；所述预处理的方法包括利用600-800℃的水蒸气进行焙烧处理；The aluminum-containing carrier is selected from any one of pretreated bauxite, pretreated aluminum hydroxide or pretreated aluminum oxide, or a combination of at least two thereof; the pretreatment method comprises roasting with water vapor at 600-800°C; 所述含铝载体中含有氧化铝。The aluminum-containing carrier contains aluminum oxide. 2.根据权利要求1所述的应用，其特征在于，所述含铝载体中含有氧化铝和二氧化硅，所述氧化铝和二氧化硅的质量比≥4。2. The use according to claim 1, characterized in that the aluminum-containing carrier contains aluminum oxide and silicon dioxide, and the mass ratio of aluminum oxide to silicon dioxide is ≥4. 3.根据权利要求1所述的应用，其特征在于，所述焙烧的时间为8-24 h。3. The use according to claim 1, characterized in that the roasting time is 8-24 h. 4.根据权利要求1所述的应用，其特征在于，所述煤气化反应使用的气化剂为水蒸气；4. The use according to claim 1, characterized in that the gasifying agent used in the coal gasification reaction is water vapor; 和/或，所述煤气化反应的温度为700-800℃。And/or, the temperature of the coal gasification reaction is 700-800°C. 5.根据权利要求1所述的应用，其特征在于，所述钠盐催化剂选自可溶性钠盐。5. The use according to claim 1, characterized in that the sodium salt catalyst is selected from soluble sodium salts. 6.根据权利要求5所述的应用，其特征在于，所述可溶性钠盐为碳酸钠、硫酸钠或氢氧化钠中的任意一种或至少两种的组合。6. The use according to claim 5, characterized in that the soluble sodium salt is any one of sodium carbonate, sodium sulfate or sodium hydroxide, or a combination of at least two thereof. 7.根据权利要求1-6中的任一项所述的应用，其特征在于，所述催化剂的制备方法包括：利用浸渍法将钠盐催化剂负载在含铝载体上。7. The use according to any one of claims 1 to 6, characterized in that the method for preparing the catalyst comprises: loading the sodium salt catalyst on an aluminum-containing carrier by an impregnation method. 8.根据权利要求1所述的应用，其特征在于，所述负载型钠催化剂的添加量为原煤质量的2-10%。8. The use according to claim 1, characterized in that the added amount of the supported sodium catalyst is 2-10% of the mass of the raw coal.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923234A (en) * 2015-04-30 2015-09-23 菏泽学院 Supported red mud composite catalyst for catalytic coal gasification and preparation method therefor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7163963B2 (en) * 2003-09-08 2007-01-16 Conocophillips Company Chemically and thermally stabilized alumina for Fischer-Tropsch catalysts
CN100335165C (en) * 2004-12-21 2007-09-05 中国科学院山西煤炭化学研究所 Hydrogenation catalyst, its process and use
CN101537352B (en) * 2009-04-22 2011-04-27 华东师范大学 A kind of preparation method of mesoporous alumina material supported platinum catalyst
CN102189004A (en) * 2010-03-19 2011-09-21 中国石油化工股份有限公司 Carrier for methanation catalyst of coal-based synthesis gas and preparation method thereof
CN102069004B (en) * 2011-01-06 2014-09-24 中国科学院过程工程研究所 A kind of fuel oil hydrocracking catalyst made from coal tar and its preparation and application method
CN105441135A (en) * 2014-06-25 2016-03-30 通用电气公司 Coal gasification method
CN104801333B (en) * 2015-03-03 2017-12-19 新奥科技发展有限公司 A kind of preparation method of loading type nickel-based catalyst
CN104941624A (en) * 2015-06-18 2015-09-30 新奥科技发展有限公司 Catalyst for catalytic coal gasification and preparation method of catalyst
CN108067265B (en) * 2016-11-11 2020-09-11 中国石油化工股份有限公司抚顺石油化工研究院 Preparation method of methane conversion catalyst
CN108067260B (en) * 2016-11-11 2020-08-11 中国石油化工股份有限公司抚顺石油化工研究院 Preparation method of core-shell type catalyst for methane halogen oxidation
CN108435221B (en) * 2017-02-16 2020-12-18 润和催化材料(浙江)有限公司 Low-carbon alkane dehydrogenation catalyst and preparation method and application thereof
CN108686713A (en) * 2017-04-12 2018-10-23 中国石油化工股份有限公司 Alumina support and preparation method thereof and dehydrogenation and its application
CN111375419B (en) * 2018-12-29 2022-07-12 中国石油化工股份有限公司 Hydrogenation catalyst and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923234A (en) * 2015-04-30 2015-09-23 菏泽学院 Supported red mud composite catalyst for catalytic coal gasification and preparation method therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
γ-Al_2O_3载体研究进展;张李锋;石悠;赵斌元;胡克鳌;唐建国;;材料导报;20070215(第02期);67-71 *
活性氧化铝载体的研究进展;唐国旗;张春富;孙长山;严斌;杨国祥;戴伟;田保亮;;化工进展;20110805(第08期);1756-1765 *

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