Chloroethylene catalyst converted and synthesized by fluidized bed and preparation method thereof

A fluidized bed and catalyst technology, applied in the direction of hydrogen halide addition preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of no fluidized catalyst, large investment in fixed assets, low degree of automation, etc. problems, to achieve the effect of improving the technical level of automation equipment, reducing investment in fixed assets, and reducing the area occupied by equipment

Inactive Publication Date: 2010-05-12
贵阳白云银星化工有限公司
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Problems solved by technology

This production is a traditional production process, which is characterized by a stable system, high conversion rate, and simple operation and control, but it has the following disadvantages: ①It requires a lot of equipment and a large investment in fixed assets

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  • Chloroethylene catalyst converted and synthesized by fluidized bed and preparation method thereof

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Embodiment

[0043] The fluidized bed conversion synthesis vinyl chloride catalyst produced by Guiyang Baiyun Yinxing Chemical Co., Ltd., the formula of mass fraction is as follows:

[0044] Mercury Chloride 11.5%,

[0045] Rare earth chloride additive A 10%,

[0046] Alkaline earth metal chloride additive B 15%,

[0047] Auxiliary C 12%,

[0048] The remainder is activated carbon;

[0049] In the formula, the purity of the mercuric chloride is ≥99.5%; the activated carbon is special coconut shell activated carbon.

[0050] Preparation methods include:

[0051] (1) Soak activated carbon with a certain concentration of hydrochloric acid solution at 70°C and set aside;

[0052] (2) Dissolve mercuric chloride, auxiliary agent A, auxiliary agent B, and auxiliary agent C together at 70°C, and the residual solute after dissolving is ≤0.08%; 12 hours;

[0053] (3) After soaking, the intermediate product obtained is pre-dried at a low temperature below 80°C;

[0054] (4) For the pre-dried ...

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Abstract

The invention provides chloroethylene catalyst converted and synthesized by a fluidized bed, adopts activated carbon as carriers to adsorb mercuric chloride, and comprises the formula as follows: 11.0-12.0% of mercuiric chloride, 5-12% of rare earth chloride assistant A, 8-20% of alkaline earth chloride assistant B, 10-15% of assistant C and the balance activated carbon, wherein the purity of the mercuiric chloride is more than or equal to 99.5%; the rare earth chloride assistant A is composed of chlorides of lanthanide series metal and actinium series metal; the alkaline earth chloride assistant B is composed of BaCl2-CaCl2; and the assistant C consists of KCl-HCl solution. The catalyst provided by the invention has 11.0-12.0% of HgCl2, compared with traditional mercuric chloride catalyst, the temperature difference between the initial area and the end area of the whole reaction zone is effectively controlled to be no more than 2 DEG C, thus improving catalytic conversion efficiency, reducing generation of harmful adverse reaction, lowering investment on fixed assets, reducing occupied area of equipment, enhancing the technology level of the automatic equipment of the whole technique. The method is suitable for manufacturers for producing chloroethylene by fluidized catalytic conversion beds.

Description

technical field [0001] The present invention relates to catalysts containing halides, in particular to catalysts containing mercuric chloride compounds, and also to methods for their preparation. Background technique [0002] In the production process of calcium carbide polyvinyl chloride, absorbing mercuric chloride with activated carbon is the only catalyst for the synthesis of vinyl chloride, which is often called mercuric chloride catalyst in the industry; static bed converters are used in industry to realize hydrogen chloride gas and hydrogen chloride under the catalysis of the catalyst. The addition reaction of acetylene gas produces C vinyl chloride monomer, and the polyvinyl chloride monomer is purified and polymerized to produce polyvinyl chloride resin as a finished product for sale. This production is a traditional production process, which is characterized by a stable system, high conversion rate, and simple operation and control, but it has the following disadva...

Claims

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Application Information

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IPC IPC(8): B01J27/138C07C21/06C07C17/08
Inventor 王良栋
Owner 贵阳白云银星化工有限公司
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