Catalyst for producing low carbon olefin from synthesis gas and use method of catalyst

A technology of low-carbon olefins and catalysts, applied in the field of catalysts, can solve the problems of low selectivity of low-carbon olefins and low conversion rate of CO, and achieve the effects of increasing conversion rate, reducing surface area carbon, and improving anti-carbon deposition effect

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low CO conversion rate and low selectivity of low-carbon olefins in the product in the technology of producing low-carbon olefins from syngas in the prior art, and provides a new

Method used

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  • Catalyst for producing low carbon olefin from synthesis gas and use method of catalyst
  • Catalyst for producing low carbon olefin from synthesis gas and use method of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Weigh 45.0 g of α-alumina (Al 2 o 3 ) powder and 40.1 grams of ground calcium carbonate (CaCO 3 ) powder with 3.4 g of titanium dioxide (TiO 2 ) powders were mixed evenly, and mixed in a ball mill for 1 hour to make a mixture G for use; weigh 11.5 grams of potassium carbonate (K 2 CO 3 ), add 30 ml of deionized water, and after it is completely dissolved, add it to the above-mentioned mixed material G for kneading and extrusion molding; after drying, sinter at 1300°C for 2 hours to make a composite carrier, cool The composite oxide carrier H was prepared by crushing and screening into 60-80 meshes; 101.2 grams of ferric nitrate nonahydrate, 25.2 grams of 50% manganese nitrate solution, and 10.4 grams of bismuth nitrate pentahydrate were dissolved in 35.0 grams of deionized water to make a mixed Solution I; under the condition of vacuum degree of 80kPa, impregnating the above mixed solution I on 70.0 grams of prepared composite oxide carrier H to obtain catalyst prec...

Embodiment 2

[0031] Weigh 63.1 g of α-alumina (Al 2 o 3 ) powder and 8.0 g ground calcium carbonate (CaCO 3 ) powder with 9.0 g of titanium dioxide (TiO 2 ) powders were mixed evenly, and mixed in a ball mill for 1 hour to make a mixture G for use; weigh 19.8 grams of potassium carbonate (K 2 CO 3 ), add 30 ml of deionized water, and after it is completely dissolved, add it to the above-mentioned mixed material G for kneading and extrusion molding; after drying, sinter at 1300°C for 2 hours to make a composite carrier, cool The composite oxide carrier H was prepared by crushing and screening into 60-80 meshes; 253.0 grams of ferric nitrate nonahydrate, 100.9 grams of 50% manganese nitrate solution, and 10.4 grams of bismuth nitrate pentahydrate were dissolved in 35.0 grams of deionized water to make a mixed Solution I; under the condition of vacuum degree of 80kPa, impregnating the above mixed solution I on 25.0 grams of prepared composite oxide carrier H to obtain catalyst precursor J...

Embodiment 3

[0034] Weigh 18.6 g of α-alumina (Al 2 o 3 ) powder and 59.9 grams of ground calcium carbonate (CaCO 3 ) powder with 0.7 g of titanium dioxide (TiO 2 ) powders were mixed evenly, and mixed in a ball mill for 1 hour to make a mixture G for use; weigh 20.8 grams of potassium carbonate (K 2 CO 3 ), add 30 ml of deionized water, and after it is completely dissolved, add it to the above-mentioned mixed material G for kneading and extrusion molding; after drying, sinter at 1300°C for 2 hours to make a composite carrier, cool The composite oxide carrier H was prepared by crushing and screening into 60-80 meshes; 25.3 grams of ferric nitrate nonahydrate, 20.2 grams of 50% manganese nitrate solution, and 2.1 grams of bismuth nitrate pentahydrate were dissolved in 35.0 grams of deionized water to make a mixed Solution I; under the condition of vacuum degree of 80kPa, impregnating the above mixed solution I on 90.0 grams of prepared composite oxide carrier H to obtain catalyst precur...

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Abstract

The invention relates to a catalyst for producing low carbon olefin from synthesis gas and a use method of the catalyst for producing the low carbon olefin from the synthesis gas. According to the catalyst and the use method, the problems of low CO conversion rate and low carbon olefin selectivity in reaction for preparing low carbon olefin from the synthesis gas in the prior art are mainly solved. The catalyst for producing low carbon olefin from the synthesis gas comprises the following components in percentage by weight: (a) 5%-50% of an iron element or oxides of the iron element, (b) 4%-20% of at least one element selected from manganese and zirconium or oxides of the element, (c) 1%-10% of a bismuth element or oxides of the bismuth element and (d) 25%-90% of a carrier, wherein the carrier comprises the following components in parts by weight: (1) 15-40 parts of alpha-aluminum oxide, (2) 1-45 parts of calcium oxide, (3) 1-5 parts of titanium dioxide and (4) 1-20 parts of potassium oxide. According to the technical scheme, the problems are well solved; the catalyst can be applied to the industrial production for producing low carbon olefin from the synthesis gas by virtue of a fixed bed.

Description

technical field [0001] The invention relates to a catalyst for producing low-carbon olefins from synthesis gas and a use method thereof. Background technique [0002] Low-carbon olefins refer to olefins with carbon atoms less than or equal to 4. Low-carbon olefins represented by ethylene and propylene are very important basic organic chemical raw materials. With the rapid growth of my country's economy, the supply of low-carbon olefins has been in short supply for a long time. At present, the production of low-carbon olefins mainly adopts the petrochemical route of cracking light hydrocarbons (ethane, naphtha, light diesel oil). Due to the increasing shortage of global oil resources and the long-term high price of crude oil, the development of low-carbon olefins industry only relies on oil The tubular cracking furnace process with light hydrocarbons as raw materials will encounter more and more raw material problems, and the production process and raw materials of low-carbo...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/843C07C1/04C07C11/02C10G2/00
Inventor 李剑锋陶跃武宋卫林庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
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