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Preparation method and application of microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether

A technology of low-carbon olefins and dimethyl ether, which is applied in the field of preparation of microsphere catalysts to achieve the effects of enhanced strength, good repeatability, and increased interaction force

Inactive Publication Date: 2019-09-24
平顶山市汇通达科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Although the existing patents involve the preparation of wear-resistant microsphere catalysts, there is no relevant literature report on the preparation of wear-resistant catalysts while improving the reaction performance of microsphere catalysts.

Method used

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  • Preparation method and application of microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether
  • Preparation method and application of microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether
  • Preparation method and application of microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether

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Embodiment 1

[0039] The preparation method of the microsphere catalyst used for the preparation of light olefins by methanol, ethanol or dimethyl ether of the present invention, the detailed steps of the preparation method are as follows:

[0040] a. Mix 1 kg of silicoaluminophosphate molecular sieve SAPO-34 raw powder with 1.3 kg, 0.25 mol / L aluminum chloride aqueous solution, and then stir at 40°C for 1.5 hours to obtain a mixed solution;

[0041] b, then at room temperature, add 0.5kg deionized water, 50g lanthanum nitrate, 30g polyethylene glycol 600, 2.6kg aluminum sol (solid content is 20%), 0.94kg silica sol to the mixed solution obtained in step a (solid content is 30%), 0.2kg pseudo-boehmite (solid content is 70%) and 1.25kg kaolin (solid content is 80%), stir after adding;

[0042] c. Stir the mixed solution obtained in step b to perform high-speed shear dispersion until ≥80% of the particle size in the obtained suspension is smaller than 8 microns;

[0043] d. The suspension ob...

Embodiment 2

[0046] The preparation method of the microsphere catalyst used for the preparation of light olefins by methanol, ethanol or dimethyl ether of the present invention, the detailed steps of the preparation method are as follows:

[0047] a. Mix 1.5kg silicoaluminophosphate molecular sieve SAPO-34 raw powder with 2.0kg, 0.10mol / L aluminum sulfate aqueous solution, and then stir at 30°C for 3 hours to obtain a mixed solution;

[0048] b, then at room temperature, add 0.5kg deionized water, 30g cerium nitrate, 20g polyethylene glycol 600, 2.4kg aluminum sol (solid content is 20%), 1.05kg silica sol to the mixed solution obtained in step a (solid content is 30%) and 1.4kg metakaolin (solid content is 80%), stir after adding;

[0049] c. Stir the mixed solution obtained in step b to perform high-speed shear dispersion until ≥80% of the particle size in the obtained suspension is smaller than 8 microns;

[0050] d. The suspension obtained by shearing and dispersing in step c is pressu...

Embodiment 3

[0053] The preparation method of the microsphere catalyst used for the preparation of light olefins by methanol, ethanol or dimethyl ether of the present invention, the detailed steps of the preparation method are as follows:

[0054] a. Mix 2kg of silicoaluminophosphate molecular sieve SAPO-34 raw powder with 3.0kg, 0.2mol / L aluminum nitrate aqueous solution, and then stir at 50°C for 1 hour to obtain a mixed solution;

[0055] b, then at room temperature, add 0.7kg deionized water, 15g lanthanum nitrate, 15g cerium nitrate, 20g polyacrylamide, 3.4kg aluminum phosphate sol (solid content is 20%), 0.25 kg to the mixed solution obtained in step a kg pseudo-boehmite (solid content is 70%) and 1.05kg alumina (solid content is 80%), stir after adding;

[0056] c. Stir the mixed solution obtained in step b to perform high-speed shear dispersion until ≥80% of the particle size in the obtained suspension is smaller than 8 microns;

[0057] d. The suspension obtained by shearing and ...

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Abstract

The invention discloses a preparation method and application of a microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether. The preparation method comprises the steps: mixing raw powder of a silico-aluminum-phosphate molecular sieve SAPO with an aluminum salt aqueous solution, performing stirring so as to obtain a mixed solution, adding deionized water, a regulator A, a pore-forming agent B, a binder and a matrix at room temperature, performing uniform stirring, performing high-speed shear dispersion on the stirred mixed solution so as to obtain a suspension, performing spray drying on the obtained suspension so as to form microsphere particles, and calcining the microsphere particles so as to obtain the microsphere catalyst for preparation of low-carbon olefin from methanol, ethanol or dimethyl ether. The preparation method of the catalyst is simple and easy, and has good repeatability, and the prepared microsphere catalyst has excellent reaction performance and high mechanical strength.

Description

[0001] 1. Technical field: [0002] The invention relates to a preparation method of a microsphere catalyst, in particular to a preparation method and application of a microsphere catalyst used for preparing light olefins from methanol, ethanol or dimethyl ether. [0003] 2. Background technology: [0004] Ethylene and propylene are important basic chemical raw materials, mainly used in the production of plastics and other chemical products. At present, 98% of the world's ethylene comes from steam cracking of petroleum-based raw materials, and propylene is mainly obtained in two forms: the co-product of steam cracking to produce ethylene and the by-product of catalytic cracking. In recent years, with the continuous growth of oil demand and the rise of crude oil prices, it is particularly important to develop technologies for the production of ethylene propylene from unconventional oil routes. [0005] Methanol is a common bulk chemical, which can be prepared from coal, natural...

Claims

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Application Information

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IPC IPC(8): B01J29/85B01J35/08C07C1/20C07C11/04C07C11/06
CPCB01J29/85C07C1/20C07C2529/85B01J35/51C07C11/04C07C11/06Y02P20/52Y02P30/20Y02P30/40
Inventor 王朝恒韩晓阁张明刘国良
Owner 平顶山市汇通达科技开发有限公司
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