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Device and method for preparing copper-based catalyst by co-precipitation method

A copper-based catalyst, a technology of co-precipitation method, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc. problems such as the large influence of shape, to achieve the effect of improving accuracy, reducing uncertainty, and improving accuracy

Inactive Publication Date: 2019-04-16
HAO HUA CHENGDU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Device and method for preparing copper-based catalyst by co-precipitation method

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Embodiment 1

[0045] Preparation of methanol-steam recombination catalyst for hydrogen production: Weigh appropriate amount of copper nitrate, aluminum nitrate and zinc nitrate and dissolve in 2L of deionized water, and weigh appropriate amount of sodium carbonate and dissolve in 2L of deionized water. The obtained salt and alkali are dissolved in a raw material liquid preheater for preheating, then fed into a reaction kettle through a feed pump for reaction and aging. After aging, open the drain valve at the bottom, adjust the rotation frequency of the drum, and at the same time continuously add deionized water through the water inlet of the kettle cover, and the sodium ions and nitrate ions in the reaction product will be discharged through the drain. After washing, the filter cake obtained by centrifugal drying is evenly pasted on the filter cloth of the drum, and the temperature of the heat transfer oil in the jacket is adjusted to dry the filter cake to remove its physical moisture. Th...

Embodiment 2

[0047] Catalytic cracking of methanol to prepare carbon monoxide catalyst: Weigh an appropriate amount of copper nitrate, zinc nitrate and nickel nitrate and dissolve them in 1.8L of water, and weigh an appropriate amount of sodium carbonate and dissolve them in 2L of water. The obtained salt and alkali are dissolved in a raw material liquid preheater for preheating, then fed into a reaction kettle through a feed pump for reaction and aging. After aging, open the drain valve at the bottom, adjust the rotation frequency of the drum, and at the same time continuously add deionized water through the water inlet of the kettle cover, and the sodium ions and nitrate ions in the reaction product will be discharged through the drain. After washing, the filter cake obtained by centrifugal drying is evenly pasted on the filter cloth of the drum, and the temperature of the heat transfer oil in the jacket is adjusted to dry the filter cake to remove its physical moisture. The desired hydr...

Embodiment 3

[0049] Preparation of low-carbon mixed alcohol catalyst for synthesis gas: Weigh an appropriate amount of zinc nitrate, aluminum nitrate, copper nitrate and cobalt nitrate and dissolve them in 2.5L of water, and weigh an appropriate amount of potassium carbonate and dissolve them in 2.5L of water. The obtained salt and alkali are dissolved in a raw material liquid preheater for preheating, and added to a reaction kettle for reaction. After the one-step reaction and aging is completed, the preheated second-step raw material solution is added to the reaction kettle for reaction and aging. After aging, open the drain valve at the bottom, adjust the rotating frequency of the drum, and at the same time continuously add deionized water through the water inlet of the kettle cover, and the potassium ions and nitrate ions in the reaction product will be discharged through the drain. After washing, the filter cake obtained by centrifugal drying is evenly pasted on the filter cloth on th...

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Abstract

The invention provides a device for preparing a copper-based catalyst by a co-precipitation method, which belongs to the technical field of co-precipitation catalyst preparation. The device includes a raw material liquid preheater, a feeding pump, a control system, and a reaction kettle. The raw material liquid preheater is connected and communicated with the feeding pump, and the feeding pump is connected and communicated with the raw material liquid inlet set on the reaction kettle. , the reaction kettle is provided with a rotating drum, a jacket is arranged outside the reaction kettle, and a heat-conducting oil is arranged in the jacket. Take control. The present invention also provides a method for preparing a copper-based catalyst by performing a co-precipitation method on the device. The invention provides a device and method for preparing copper-based catalyst by coprecipitation method integrating reaction, washing, filtration and drying. By using the device and method of the invention, the collision rate of metal ions can be increased, and the change of washing water temperature can be reduced. The influence of crystal formation makes the reaction more precise and more efficient.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/08B01J19/18B01J23/80B01J37/03
CPCB01J19/0006B01J19/0013B01J19/18B01J23/80B01J37/031B01J2219/0006B01J2219/00094B01J2219/00135B01J2219/00189B01F23/405B01F23/45B01F2101/2204
Inventor 徐晓峰王科胡志彪程金燮邹鑫李倩黄宏
Owner HAO HUA CHENGDU TECH
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