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Light acrylic acid catalyst carrier and preparation method thereof

A technology of catalyst carrier and acrylic acid, which is applied in the direction of catalyst carrier, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problem of high price, and achieve the effect of large water absorption rate, large pore volume and high water absorption rate

Inactive Publication Date: 2018-07-13
陈彦霖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the acrylic acid catalyst carrier mainly relies on imports from developed countries such as Japan, which leads to the high price of the acrylic acid catalyst carrier on the market. Due to the requirements of physical performance indicators such as apparent pore volume, the preparation of special supports for acrylic acid catalysts in China is basically at the bottleneck stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The light-weight acrylic acid catalyst carrier is composed of the following raw materials: 15wt% bauxite with a particle size of 100-150 mesh, 4wt% Hunan Pukou sand with a particle size of 50-100 mesh, 4wt% mountain mud, 30wt% and a particle size of It is prepared by mixing, molding and sintering 150-200 mesh pseudo-boehmite, 14wt% Jiangxi Dongqiao sand with a particle size of 150-200 mesh, 20wt% kaolin, and 13wt% wood flour as follows:

[0030] a. First mix the bauxite, Hunan Pukou sand, half mountain clay and half of kaolin (that is, 10wt% kaolin in the raw material) through ball milling to obtain a uniform base material.

[0031] b. Then add the above base material into the ball-bobbing machine and roll it mechanically to make a 4-4.5mm ball green body;

[0032] c. Mix the pseudo-boehmite powder, Jiangxi Dongqiao sand, wood powder and half of the kaolin (that is, 10wt% kaolin in the raw material) through ball milling to obtain a uniform fabric.

[0033] d. Then add ...

Embodiment 2

[0038]The light-weight acrylic acid catalyst carrier is composed of the following raw materials: 10wt% bauxite with a particle size of 100-150 mesh, 3wt% Hunan Pukou sand with a particle size of 50-100 mesh, 3wt% mountain mud, 34wt% and a particle size of It is prepared by mixing, molding and sintering the following methods:

[0039] a. First mix the bauxite, Hunan Pukou sand, half mountain mud and half of kaolin (that is, 12.5wt% kaolin in the raw material) through ball milling to obtain a uniform base material.

[0040] b. Then add the above base material into the ball-bobbing machine and roll it mechanically to make a 4-4.5mm ball green body;

[0041] c. Then mix the pseudo-boehmite powder, Jiangxi Dongqiao sand, wood powder and half of the kaolin (that is, 12.5wt% kaolin in the raw material) through ball milling to obtain a uniform fabric.

[0042] d. Then add the material to the enamel machine and continue to enamel the ball body into 8-12mm balls.

[0043] e. Add silic...

Embodiment 3

[0047] The light-weight acrylic acid catalyst carrier is composed of the following raw materials: 18wt% bauxite with a particle size of 100-150 mesh, 3wt% Hunan Pukou sand with a particle size of 50-100 mesh, 3wt% mountain mud, 36wt% and a particle size of It is prepared by mixing, molding and sintering 150-200 mesh pseudo-boehmite, 16wt% Jiangxi Dongqiao sand with a particle size of 150-200 mesh, 10wt% kaolin, and 15wt% wood flour as follows:

[0048] a. First mix the bauxite, Hunan Pukou sand, half mountain clay and half of kaolin (that is, 5wt% kaolin in the raw material) through ball milling to obtain a uniform base material.

[0049] b. Then add the above base material into the ball-bobbing machine and roll it mechanically to make a 4-4.5mm ball green body;

[0050] c. Mix the pseudo-boehmite powder, Jiangxi Dongqiao sand, wood powder and half of the kaolin (that is, 5wt% kaolin in the raw material) through ball milling to obtain a uniform fabric.

[0051] d. Then add th...

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Abstract

The invention discloses a light acrylic acid catalyst carrier which is prepared from the following components: 10-20wt% of bauxite, 3-5wt% of Hunan Pukou sands, 3-5wt% of hemi-mountain mud, 30-40wt% of pseudo-boehmite, 10-20wt% of Jiangxi East Bridge sands, 10-30wt% of kaolin and 10-20wt% of wood flour. The preparation method comprises the following steps of performing ball milling and mixing on the bauxite, the Hunan Pukou sands, the hemi-mountain mud and half of the kaolin to obtain a uniform base material, and then lining the base material to prepare a green body; and then performing ball milling and mixing on the pseudo-boehmite, the Jiangxi East Bridge sands, the wood flour and half of the kaolin to obtain a uniform facing material, then adding the facing material in a ball milling machine for continuously lining to prepare pellets, adding non-metallic compound crystal particles in the ball milling machine, spraying the surface of each pellet with a layer of colloid, and then performing high-temperature firing on the pellets to prepare the light acrylic acid catalyst carrier. The light acrylic acid catalyst carrier is large in water absorption, small in specific gravity, largein specific surface area, strong in adsorption force, simple in technology and low in cost.

Description

technical field [0001] The invention relates to petrochemical and special ceramic industries, in particular to a light acrylic acid catalyst carrier and a preparation method thereof. Background technique [0002] Acrylic acid is an important organic synthetic raw material and synthetic resin monomer, and is a vinyl monomer with a very fast polymerization rate. It is the simplest unsaturated carboxylic acid, consisting of a vinyl group and a carboxyl group. Pure acrylic acid is a clear, colorless liquid with a characteristic pungent odour. It is miscible with water, alcohols, ethers and chloroform and is prepared from propylene obtained from refineries. Most of them are used to make acrylates such as methyl acrylate, ethyl ester, butyl ester, and hydroxyethyl ester. Acrylic acid and acrylate can be homopolymerized and copolymerized, and its polymers are used in industrial sectors such as synthetic resins, synthetic fibers, superabsorbent resins, building materials, and coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J35/10B01J37/00
CPCB01J27/22B01J27/224B01J27/24B01J37/0009B01J35/31B01J35/30B01J35/615
Inventor 陈彦霖
Owner 陈彦霖
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