Device and method for preparing copper-based catalyst by coprecipitation

Abstract

The invention provides a device for preparing a copper-based catalyst by coprecipitation and belongs to the technical field of co-precipitated catalyst preparation. The device comprises a feed solution preheater, a charge pump, a control system and a reaction vessel. The feed solution preheater and the charge pump are communicated. The charge pump is communicated with a feed solution inlet arranged on the reaction vessel. A rotary drum is arranged inside the reaction vessel. A jacket is arranged outside the reaction vessel, and conduction oil is arranged inside the jacket. The control system controls rotational frequency of the charge pump, rotational frequency of the rotary drum and temperature of the conduction oil. The invention also provides a method for preparing the copper-based catalyst by coprecipitation with the application of the device. The invention provides a device and a method for preparing the copper-based catalyst by coprecipitation integrating reaction, washing, filtration and drying. By the device and the method, collision rate of metal ions can be increased, the influence of wash water temperature change on crystal forming is reduced, and the reaction is more accurate and efficiency is higher.

Description

technical field [0001] The invention belongs to the technical field of preparation of co-precipitation catalysts, in particular to the preparation of copper-based catalysts in the chemical industry, in particular to a device and method for preparing copper-based catalysts by a co-precipitation method. Background technique [0002] The co-precipitation method uses acid-base neutralization to obtain uniform precipitation of various components, and the reaction product undergoes a series of processes such as filtration, drying, calcination, and tablet molding, and finally produces a finished catalyst. The co-precipitation method has the advantages of simple process, low cost, easy control of preparation conditions, and short synthesis cycle, and has become the most researched preparation method at present. [0003] Co-precipitation method is mostly used to mix the acid-base solution in the form of co-current, and then stirred by the stirring paddle in the reaction kettle to ach...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, it is often difficult to fully mix the effective components in the acid-base solution, so that the optimal crystal cannot be obtained.

Most catalysts prepared by co-precipitation method are filtered by centrifuge, the beating time is long, and the change of water temperature has a great influence on the shape of copper crystals, which increases the uncertainty of crystal formation

At the same time, the co-precipitation method requires a lot of corresponding equipment, such as reactors, centrifugal dryers, ovens, muffle furnaces, tablet presses, etc. The standardization, precision and automation of the process are not enough, and a large number of skilled operators are often required

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