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Activation method of nickel catalyst

An activation method and catalyst technology, which are used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as the selectivity and danger of dichloroaniline that cannot be solved, and achieve low loss and safety. The effect of high and low production cost

Active Publication Date: 2013-09-18
山东圳诺化工有限公司
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Problems solved by technology

However, this method not only has a greater risk of operation, but also can only wash away part of the aluminum in the alloy powder in the nickel catalyst, and cannot solve the selectivity problem of producing dichloroaniline by the hydrogenation method of the nickel catalyst

Method used

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  • Activation method of nickel catalyst

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Embodiment

[0020] The equipment involved in the present invention includes lye pump P106, lye metering tank V201, catalyst activation kettle R201, settling tank V202 and material pipeline.

[0021] Its main technological process is as follows:

[0022] 1. Alkali storage tank V204→alkali pump P106→alkali metering tank V201→catalyst activation kettle R201→settling tank V202;

[0023] 2. Hot distilled water tank V203→catalyst activation kettle R201;

[0024] 3. Hot distilled water tank V203→sedimentation tank V202;

[0025] 4. The main catalyst and co-catalyst are put in manually through the hand hole.

[0026] The specific process steps are:

[0027] Add 200 liters of water to the activation kettle, heat up to 50°C, add 50 kg of main catalyst, and then gradually add copper oxide, iron oxide, zinc oxide, and molybdenum oxide (the amount added is 0.1%-20% of the amount of the main catalyst). Turn on the cooling water, add 0.5 liter of 50% sodium hydroxide solution, activate the main cata...

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Abstract

The invention belongs to the catalyst application field and especially discloses an activation method of a nickel catalyst. The activation method of the nickel catalyst is characterized by mainly comprising the following steps of: heating water in an activation kettle, adding the nickel catalyst after heating, followed by successively adding copper oxide, iron oxide, zinc oxide and molybdena; introducing cooling water, gradually adding a small amount of a sodium hydroxide solution, and activating the nickel catalyst to react. The activation method provided by the invention has advantages of advanced technology, high security, simple operation, low dissipation, high hydrogenation selectivity for the catalyst, low production cost and good product quality.

Description

(1) Technical field [0001] The invention belongs to the field of catalyst application, in particular to an activation method of a nickel catalyst. (2) Background technology [0002] At present, there is no effective industrial method to activate and prepare nickel catalyst for dichloroaniline, which directly leads to the failure of the activation effect of nickel catalyst to meet the requirements of industrial production, the product quality cannot meet customer requirements, and the subsequent separation process is complicated. Since the catalytic activity of the catalyst is directly related to the quality and efficiency of the hydrogenation reaction, the activation effect of the catalyst will not only cause waste, but also directly affect the product quality, increase the production cost and bring certain unsafe factors. Moreover, it also causes a huge waste of resources and brings huge damage to production costs. [0003] At present, the activation method of nickel c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/10B01J37/06B01J23/887
Inventor 张玉吉娄兰亭孟文张文革席庆银
Owner 山东圳诺化工有限公司
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