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Preparation method of catalyst carrier for preparing substitute natural gas from coal-based syngas

A technology of catalyst carrier and natural gas substitute, which is applied in the field of catalysis, can solve the problems of unsuitable use and poor hydrothermal stability, and achieve the effect of preventing carbon deposition and good hydrothermal stability

Inactive Publication Date: 2014-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carriers of these catalysts have poor hydrothermal stability and are not suitable for use in the reaction of coal-based synthesis gas to substitute natural gas.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Sample preparation

[0014] 1) Weigh 600g of alumina monohydrate and heat it at 120℃~300℃ for 1h~3h; 2) Add 800g of magnesium soluble salt to the heat-treated alumina, and add a certain amount of deionized water. Knead for 0.5h, mix well, dry at 100℃~140℃, and then roast at 350℃~550℃ for 2~4h; 3) Crush the calcined material, add 24g cellulose and 500g deionized water , After kneading uniformly, let it stand for 10h; 4) Granulate the uniformly kneaded material into particles with a particle size of about 1.2mm, and dry at 120°C for 3~5h; 5) Add graphite to the dried particles and mix them evenly, then press the tablet machine The tablets are honeycomb-shaped particles; 6) The tablets are calcined at 700°C~1200°C to obtain catalyst carrier I.

Embodiment 2

[0015] Example 2: Sample preparation

[0016] 1) Weigh 600g of alumina monohydrate and heat it at 120℃~300℃ for 1h~3h; 2) Add 800g of magnesium soluble salt to the heat-treated alumina, and add a certain amount of deionized water. Knead for 0.5h, mix well, dry at 100℃~140℃, and then roast at 350℃~550℃ for 2~4h; 3) Crush the calcined material, add 24g cellulose and 500g deionized water After kneading uniformly, leave it for 15h; 4) Granulate the uniformly kneaded material into particles with a particle size of about 1.2mm, and dry at 120°C for 3~5h; 5) Add graphite to the dried particles and mix them evenly, then press the tablet machine Tablets into honeycomb particles; 6) The tablets are calcined at 700℃~1200℃ to obtain catalyst carrier II.

Embodiment 3

[0017] Example 3: Sample preparation

[0018] 1) Weigh 600g of alumina monohydrate and heat it at 120℃~300℃ for 1h~3h; 2) Add 800g of magnesium soluble salt to the heat-treated alumina, and add a certain amount of deionized water. Knead for 0.5h, mix well, dry at 100℃~140℃, and then roast at 350℃~550℃ for 2~4h; 3) Crush the calcined material, add 24g cellulose and 500g deionized water , After kneading uniformly, let it stand for 20h; 4) Granulate the uniformly kneaded material into particles with a particle size of about 1.2mm, and dry at 120°C for 3~5h; 5) Add graphite to the dried particles and mix them evenly, then press the tablet machine The tablets are honeycomb-shaped particles; 6) The tablets are calcined at 700°C~1200°C to obtain catalyst carrier III.

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PUM

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Abstract

The invention belongs to the technical field of catalysis, and relates to a preparation method of a catalyst carrier for preparing substitute natural gas from coal-based syngas. The catalyst carrier is prepared by the steps of mixing alumina (or pseudo-boehmite) with a soluble salt of magnesium, adding deionized water, fully mixing evenly, placing for a certain time, then drying, roasting, smashing, pelletizing with adding an adhesive, drying, carrying out tabletting forming, and roasting to obtain the catalyst carrier. The catalyst carrier prepared by the method has good hydrothermal stability, and has the water absorption rate of 35%-50%. A catalyst prepared by adopting the catalyst carrier and used for preparing the substitute natural gas from the coal-based syngas is suitable for a methanation reaction under conditions of relatively high CO content and relatively high reaction temperature, and can effectively prevent carbon deposition.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a preparation method of a catalyst carrier used for producing substitute natural gas from coal-based synthesis gas. Background technique [0002] Natural gas is an efficient and clean energy. In recent years, with the successive completion and commissioning of national-level gas transmission projects such as "Shaanxi Gas Entering Beijing" and "West-to-East Gas Transmission", the demand for natural gas has shown explosive growth, and the gap between supply and demand of natural gas has also become larger and larger. , while my country is relatively rich in coal resources, coal-based syngas SNG is an effective way to solve the contradiction between supply and demand of natural gas, and the coal-to-SNG project has become a new investment hotspot in the field of coal chemical industry after coal-to-liquids in my country. [0003] my country is a country rich in coal,...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/10C10L3/08
Inventor 蔡成伟魏士新蔡进檀结东陈长新吴学其张杰吴琳孟建朱艳芳
Owner CHINA PETROLEUM & CHEM CORP
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