Sintered catalyst for producing low-carbon olefins from syngas and preparation method thereof

A technology of low-carbon olefins and catalysts, which is applied in the field of sintered synthesis gas-based low-carbon olefin catalysts and its preparation, which can solve the problems of low selectivity of low-carbon olefins, low CO conversion rate, poor thermal stability, etc., and achieve improved selectivity , reduced internal diffusion resistance, good thermal stability

Active Publication Date: 2018-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 Fischer-Tropsch synthesis process of low-carbon olefins in the prior art, and the problem of poor strength and poor thermal stability of the catalyst under the conditions of use. , to provide a new sintered synthesis gas-to-low-carbon olefins catalyst, which has the advantages of high CO conversion rate and high selectivity of low-carbon olefins in the product when it is used in the reaction of fixed-bed synthesis of low-carbon olefins

Method used

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  • Sintered catalyst for producing low-carbon olefins from syngas and preparation method thereof
  • Sintered catalyst for producing low-carbon olefins from syngas and preparation method thereof
  • Sintered catalyst for producing low-carbon olefins from syngas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take by weighing 40.0 grams of ferric oxide (Fe 3 o 4 ), 4.0 grams of cobalt oxide (CoO), 10.0 grams of calcium oxide (CaO), 10.0 grams of silicon dioxide (SiO 2 ), 32.0 grams of titanium oxide (TiO 2 ) and 4.0 grams of indium oxide (In 2 o 3 ) six kinds of raw materials and 5 grams of hydroxyethyl cellulose of 5% by weight in the total amount of raw materials, milled and mixed for 4 hours in a ball mill; The kneaded material is kneaded until soft; the kneaded material is sent into the extruder, made into a strip with a diameter of 5mm, and cut into a column with a length of 20mm. After natural drying, it is sent to the drying machine. In the equipment, dry at 120°C for 8 hours for later use; send the dried precursor into a high-temperature furnace, calcinate at 1600°C for 4.0 hours, and after cooling, crush and sieve into 60-80 meshes to obtain the required sintered synthesis gas Preparation of low carbon olefin catalysts. The prepared catalyst comprises the foll...

Embodiment 2

[0029] Weigh 67.5 grams of ferric oxide (Fe 3 o 4 ), 0.5 grams of cobalt oxide (CoO), 3.0 grams of calcium oxide (CaO), 3.0 grams of silicon dioxide (SiO 2 ), 13.0 grams of titanium oxide (TiO 2 ) and 13.0 grams of indium oxide (In 2 o 3 ) six kinds of raw materials and 5 grams of hydroxyethyl cellulose of 5% by weight according to the total amount of raw materials, milled and mixed for 2 hours in a ball mill; The kneaded material is kneaded until soft; the kneaded material is sent into the extruder, made into a strip with a diameter of 5mm, and cut into a column with a length of 20mm. After natural drying, it is sent to the drying machine. In the equipment, dry at 120°C for 8 hours for later use; send the dried precursor into a high-temperature furnace, calcinate at 1600°C for 4.0 hours, and after cooling, crush and sieve into 60-80 meshes to obtain the required sintered synthesis gas Preparation of low carbon olefin catalysts. The prepared catalyst comprises the follow...

Embodiment 3

[0031] Weigh 30.0 grams of ferric oxide (Fe 3 o 4 ), 5.5 grams of cobalt oxide (CoO), 22.0 grams of calcium oxide (CaO), 22.0 grams of silicon dioxide (SiO 2 ), 20.0 grams of titanium oxide (TiO 2 ) and 0.5 g of indium oxide (In 2 o 3 ) six kinds of raw materials and 5 grams of hydroxyethyl cellulose that are 5% by weight in terms of the total amount of raw materials were ground and mixed for 5 hours in a ball mill; The kneaded material is kneaded until soft; the kneaded material is sent into the extruder, made into a strip with a diameter of 5mm, and cut into a column with a length of 20mm. After natural drying, it is sent to the drying machine. In the equipment, dry at 120°C for 8 hours for later use; send the dried precursor into a high-temperature furnace, calcinate at 1600°C for 4.0 hours, and after cooling, crush and sieve into 60-80 meshes to obtain the required sintered synthesis gas Preparation of low carbon olefin catalysts. The prepared catalyst comprises the ...

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Abstract

The invention relates to a sintered catalyst for producing low-carbon olefins from syngas and a preparation method thereof, which mainly solves the low conversion rate of CO and low selectivity of low-carbon olefins in the reaction of producing low-carbon olefins from syngas in the prior art. The problem of poor strength and poor thermal stability under certain conditions. The catalyst used in the present invention includes the following components in parts by weight: a) 10-70 parts of iron element or its oxide; b) 1-10 parts of cobalt element or its oxide; c) 5-20 parts selected from calcium and at least one element of magnesium or its oxide; d) 5-20 parts of at least one element selected from silicon and zirconium or its oxide; e) 15-45 parts of titanium or its oxide; f) 1 The technical scheme of ~10 indium elements or their oxides solves this problem well and can be used in the industrial production of low-carbon olefins from syngas.

Description

technical field [0001] The invention relates to a sintered catalyst for producing low-carbon olefins from syngas and a preparation 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/825C07C11/04C07C11/06C07C11/08C07C1/04
CPCY02P20/52
Inventor 李剑锋陶跃武宋卫林庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
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