Production method for copper-zinc catalyst

A production method and catalyst technology, which is applied in the production field of copper-zinc catalysts, can solve the problems of catalyst strength fluctuations, difficult one-time molding of roasted particles, etc., and achieve the effect of reducing labor intensity

Inactive Publication Date: 2016-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, it solves the problems that the catalyst is produced by the traditional process, the calcined particles are difficult to form at one time, and the catalyst strength fluctuates greatly.

Method used

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  • Production method for copper-zinc catalyst
  • Production method for copper-zinc catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First, the ternary slurry is prepared according to the method provided by ZL00133276.7, and then the catalyst production method of the present invention is used to produce the low-pressure methanol catalyst. After adding graphite accounting for 2% of the solid content to the ternary slurry for the production of low-pressure methanol catalyst, mix evenly, the solid content of the ternary slurry is 25%, and form 0.9mm dry particles by spray drying to control the size of the dry particles The water content is 5%, and then the dried particles are formed by tableting with a tablet machine. The filling height of the tablet machine is 30mm, and the height of the tablet is 15mm. The size of the tablet is ?100mm, that is, the compression ratio is 2, and then The tablet is crushed into particles with a diameter of less than 2mm by a pulverizer, the particles are roasted in a far-infrared roaster, and the roasted particles are pressed into a cylindrical tablet of ?5mm×5mm to obtain...

Embodiment 2

[0016] First, the ternary slurry is prepared according to the method provided by ZL00133276.7, and then the catalyst production method of the present invention is used to produce the low-pressure methanol catalyst. After adding graphite accounting for 2% of the solid content to the ternary slurry for the production of low-pressure methanol catalyst, mix evenly, the solid content of the ternary slurry is 25%, and form 0.9mm dry particles by spray drying to control the size of the dry particles The water content is 5%, and then the dry particles are formed by tableting with a tablet machine. The height of the filler in the tablet machine is 30mm, and the height of the tablet is 12mm. The size of the tablet is ?100mm, that is, the compression ratio is 2.5, and then Use a pulverizer to crush the tablet into particles with a diameter less than 2mm, roast the particles in a far-infrared roaster, and press the roasted particles into a cylindrical tablet of ?5mm×5mm to obtain the finis...

Embodiment 3

[0018] The catalyst was prepared according to the method provided in the ZL00133276.7 example as a reference sample. That is, the ternary slurry is washed, filtered and washed, dried, roasted, and shaped to obtain a cylindrical tablet of ?5×5, and the finished product A is obtained. The optimum compression ratio for forming is 3.8.

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Abstract

The invention belongs to the technical field of chemical industry catalysts and particularly relates to a production method for a copper-zinc catalyst. The production method for the catalyst, disclosed by the invention, comprises the steps of subjecting precipitated slurry to spray drying, and then, subjecting spray-dried particles to pre-tabletting so as to form tablets with larger size, so as to replace the traditional method which comprises the steps of carrying out a material crushing procedure, then, crushing the tablets with larger size into particles with particle size smaller than 2mm by adopting a crusher, and then, carrying out tabletting so as to form the finished product of required specifications. According to the production method, accurate control on materials of different properties is achieved in a manner of controlling different compression ratios, so that control indexes are quantified, the labor intensity is lowered, and the product quality can be more stable.

Description

technical field [0001] The invention belongs to the technical field of chemical catalyst production, and in particular relates to a production method of a copper-zinc catalyst. Background technique [0002] At present, in the catalyst preparation of the copper-zinc system, the precipitation reaction is usually carried out by using the mixed solution of copper and zinc soluble salts and the precipitant to form copper and zinc precipitates. After washing, different catalysts can be added according to the needs of various catalysts. Auxiliary or carrier, and then through filtration, drying, grinding, granulation, roasting, molding and other processes to obtain the finished catalyst. In the process of industrial production, co-precipitation is generally used for neutralization and precipitation, pouring method is used for slurry washing, plate and frame filter is used for solid-liquid separation, oven is used for drying materials, and a small amount of graphite and After water,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/02B01J23/80B01J35/00
Inventor 殷玉圣李忠于孙中华李兴田朱学田袁浩然王金利魏士新孙远龙王金质
Owner CHINA PETROLEUM & CHEM CORP
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