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High-efficiency environmental-friendly catalyst carrier

A catalyst carrier and environmental protection technology, applied in the direction of catalyst carrier, physical/chemical process catalyst, chemical instrument and method, etc., can solve problems such as unfavorable gas-liquid conversion and process treatment, change the overall performance of the catalyst, reduce the service life of the catalyst, etc., to achieve Conducive to environmental protection and ecological balance, excellent regeneration conditions, and prolonging the service life

Inactive Publication Date: 2012-01-04
PINGXIANG XINQUAN IND FILLING INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the catalyst carriers used in these industries mainly adopt AI with relatively simple manufacturing process and equipment and high specific surface area. 2 o 3 and SiO 2 Manufactured as the main component of oxides, due to the AI ​​in these oxide carriers 2 o 3 and SiO 2 High content and mixed with more impurities, the catalyst activity will decrease under high temperature and high pressure conditions and other harsh service conditions, and the service life of the catalyst will be reduced. The interaction of the active components of the catalyst changes the overall performance of the catalyst, causing the catalyst to affect its thermal conductivity during use, making the reactor prone to overheating and causing catalyst sintering
AI 2 o 3 and SiO 2 Manufacturing catalyst carriers for the oxides of the main component (content above 70%) needs to consume a large amount of mineral resources, pollute the environment, destroy the ecological balance, and do not meet the requirements of the national strategy and the world's environmental protection and development of low-carbon economy; Most of the catalyst supports are spherical, granular or rod-shaped, and the pressure drop resistance is relatively large, which is not conducive to gas-liquid conversion and process treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1, first select green powdery silicon carbide with a fineness of 50-100 mesh, a purity of 99.6%, and a hexagonal α-SiC crystal and synthetic clay, the synthetic clay has a viscosity of 65,000 units and K 2 O+ Na 2 Organic clay with an O content of 0.2% and dextrin and lignin with an organic clay weight of 3%wt are mixed and crushed to pass 1200 mesh sieves. The above-mentioned silicon carbide and synthetic organoclay are used as raw materials. The content is 72%wt, and the content of synthetic organoclay is 28%wt. The above raw materials are uniformly mixed. Silica sol with a weight of 7%wt, tung oil added with a total weight of 4%wt, and 12% (volume ratio) of the total volume of raw materials, and a modulus of 150-325 mesh white PP powder were evenly mixed for 30 minutes, and then an appropriate amount of distilled water was added and Knead for 1 hour to make it into a lumpy mud with certain toughness. After discharging, it will be stale for 48 hours. Extrusio...

Embodiment 2

[0033] Example 2, first select green powdery silicon carbide with a fineness of 50-100 mesh, a purity of 99.6%, and a hexagonal α-SiC crystal and synthetic clay, the synthetic organoclay has a viscosity of 75,000 units and K 2 O+Na 2 Organic clay with an O content of 0.3% and dextrin and lignin with an organic clay weight of 5%wt are mixed and crushed to pass 1200 mesh sieves. The above-mentioned silicon carbide and synthetic organoclay are used as raw materials. The content is 80%wt, and the content of synthetic organoclay is 20%wt. The above-mentioned raw materials are uniformly mixed. 9% silica sol by weight, tung oil added with 5% wt of total weight and 9% (volume ratio) of total raw material volume, carbon powder with a modulus of 150-325 mesh and mixed for 30 minutes, then add appropriate amount of distilled water and knead 1 hour to make it into a lumpy mud material with a certain toughness, and aged for 45 hours after discharge, and formed a tubular body with an outer...

Embodiment 3

[0040] Example 3, first select green powdery silicon carbide with a fineness of 50-100 mesh, a purity of 99.6%, and a hexagonal α-SiC crystal and synthetic clay, the synthetic clay has a viscosity of 55,000 units and K 2 O+Na 2 Organoclay with an O content of 0.46% and dextrin and lignin with an organic clay weight of 1.5%wt are mixed and crushed to pass 1200 mesh sieves. The above-mentioned silicon carbide and synthetic organoclay are used as raw materials. The content is 65%wt, and the content of synthetic organoclay is 35%wt. The above two raw materials are uniformly mixed. After mixing, respectively add methyl cellulose white powder with a total weight of 2%wt of the raw materials and a viscosity of 350,000 units, Add the silica sol of total weight 5%wt, add the tung oil of total weight 3%wt and account for 15% (volume ratio) of raw material total volume 15% (volume ratio) modulus is the white PP powder of 150-325 purpose and mix evenly for 30 minutes, then add appropriate...

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Abstract

The invention discloses a high-efficiency environmental-friendly catalyst carrier, which comprises the raw materials of powdery silicon carbide with the content of 65-80% by weight and the fineness of 50-100 meshes, as well as synthetic organic clay with the content of 20-35% by weight, and is prepared by the steps of: uniformly mixing the two raw materials of the powdery silicon carbide and the synthetic organic clay, respectively adding and mixing 2-7% by weight of adhesive, 5-10% by weight of aids, and 3-5% by weight of lubricant by the total weight of the two raw materials as well as 8-15% of pore forming agent by volume ratio, adding a proper amount of distilled water after mixing and kneading into pastes, discharging, staling, extruding and molding into a tubular blank, airing, chopping into segments, drying and molding, delivering the molded blank into a kiln for heating, preserving the heat at 1250-1350DEG C, firing and cooling to obtain the finished product. The invention cantake full advantages of large amount of waste green silicon carbide abrasive tools and high-temperature kilns, thereby saving mineral resources, facilitating to environmental protection and ecological balance, reducing the production cost of the catalyst carrier, protecting the catalyst from burning out, prolonging the service life of the catalyst and improving the working efficiency of reactors,and moreover, the catalyst carrier has the advantages of excellent regeneration conditions and favorable use performance.

Description

technical field [0001] The invention relates to a catalyst carrier, in particular to a high-efficiency and environment-friendly catalyst carrier. Background technique [0002] As we all know, a catalyst is a very versatile active substance, which is made of a carrier and an active component (heavy metal) material through technological treatment. According to the different technical requirements and conditions of the industry, there are many types of carriers and manufacturing methods, and the most used catalysts are chemical, petrochemical and smelting, especially fine chemical industries. At present, the catalyst carriers used in these industries mainly adopt AI with relatively simple manufacturing process and equipment and high specific surface area. 2 o 3 and SiO 2 Manufactured as the main component of oxides, due to the AI ​​in these oxide carriers 2 o 3 and SiO 2 High content and mixed with more impurities, the catalyst activity will decrease under high temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J27/224B01J35/02B01J35/00
Inventor 周江林李日炎
Owner PINGXIANG XINQUAN IND FILLING INDAL
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