A coated wire catalyst or carrier and its manufacturing method

A technology for coating wires and manufacturing methods, applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of uneven loading, low catalyst strength, and small external void ratio, etc. Excessive pressure drop, effect of increasing external surface area and porosity

Active Publication Date: 2016-01-20
姚光纯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the catalyst is made into a regular shape with the same voids, weight and external area per unit volume, which is conducive to the uniform distribution of the reacted product in the catalyst bed, so that the reaction process is more sustainable and the reaction product is more controllable, so , How to solve the problem of low catalyst strength or uneven loading or small external void ratio and excessive bed pressure drop caused by too small catalyst volume is the main technical problem to be solved by the present invention

Method used

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  • A coated wire catalyst or carrier and its manufacturing method
  • A coated wire catalyst or carrier and its manufacturing method
  • A coated wire catalyst or carrier and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0031] 1. Slurry production: powder the catalyst (or carrier) material to be coated (the catalyst material includes platinum, palladium, rhodium, cobalt, molybdenum, nickel, etc., and the carrier material includes all known The carrier material, such as activated alumina, magnesia, zirconia, silicon carbide, silicon oxide, titanium oxide, etc.) is mixed with specific organic matter and water, and made homogeneous by stirring to prepare a slurry. In order to make the coated catalyst (or carrier) slurry have a certain degree of ductility and elasticity after drying, some special organic substances must be added to the slurry, such as water-based polyurethane, etc. What kind of organic substances should be added to ensure elasticity and ductility , It must be determined according to the nature of the carrier or catalyst material. If the catalyst (or carrier) material is alkaline, anionic polyurethane must be added. In short, increasing the elasticity and ductility of the film aft...

Embodiment B

[0041] 1. One or more layers of cloth-shaped catalysts or carriers of a certain width made by the method of Embodiment A are rolled into a cylindrical shape (that is, a cylinder) to make a roll-type catalyst of a certain diameter (according to product requirements) or catalyst carrier;

[0042] 2. Put the roll-type catalyst or carrier in a water bath to bond the cloth of the roll together, and then dry it;

[0043] 3. Roasting the reel to finally make a reel-type catalyst or carrier;

[0044] 4. The roll-type catalyst or carrier can be used for exhaust gas purification of automobiles.

Embodiment C

[0046] 1. Slurry production: use activated alumina and magnesium carbonate or magnesium nitrate as raw materials, and finally synthesize magnesium aluminum

[0047] Mix raw materials according to the ratio of spinel, add certain amount of water and other organic raw materials to make slurry for coating; or use activated alumina, white carbon black, light-burned magnesia as raw materials, according to the chemical composition of cordierite Mix raw materials to make slurry; or use activated alumina as the main ingredient and add some other auxiliary materials to make slurry;

[0048] 2. Coating: According to the method in Embodiment A, first erect carbon fiber threads (or other organic fiber threads) of 1k, 3k, 6k, 12k or other specifications, and then coat the carbon fiber threads, but this coating It is disposable, because the thickness of the coated slurry only needs to be 0.1-0.3 mm, and the coated wire cannot be twisted, so that the dried coating will not have slight cracks...

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Abstract

The invention discloses a method for a catalyst or carrier woven by coated wires. The method comprises the following steps of mixing raw material powder of solid catalyst or carrier materials, an organic matter and water to obtain slurry; coating fiber filaments with a layer of slurry by using a container with the slurry, and drying the fiber filaments to obtain coated wires; weaving the coated wires to form plaids by using a weaving machine, cutting and combining the plaids into a columnar body or a barrel, putting the columnar body or the barrel in water in which an organic adhesive is added, impregnating and adhering the columnar body or the barrel to form an integrated plaid, and reconditioning and drying the integrated plaid at the normal temperature; and putting the integrated plaid in a kiln, and performing calcination to form the structured woven catalyst or carrier. According to the method, the strip-type part of the catalyst is small, so that the outer surface area and the porosity under the same size are increased under the same size; a uniform and reasonable gap is formed between the two adjacent strip-type catalysts, so that the problems of great pressure drop of an engineering catalyst bed, non-uniform coating and even faulted coating are solved.

Description

technical field [0001] The invention relates to a catalyst or carrier, in particular to a coated wire catalyst or carrier and a manufacturing method thereof. Background technique [0002] With the development of human civilization and the improvement of the level of industrialization, human demand for natural resources is also increasing, and the natural environment is inevitably destroyed. Under the situation of increasingly scarce resources and worsening human living environment, we must rationally develop and utilize natural resources and protect the ecological environment. In order to rationally develop and use natural resources and protect the environment, technological innovation and industrial upgrading must be required to improve the efficiency of resource use and reduce or avoid damage to the environment. At present, catalysts are often used in petroleum, chemical industry, environmental protection, energy, motor vehicles and other fields. Traditional catalyst sup...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J35/04B01J21/10B01D53/94
Inventor 姚光纯
Owner 姚光纯
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