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Composite metal chloride catalyst and production process thereof

A composite metal and production process technology, applied in the chemical industry, can solve the problems of low mercury content in thermal stability, low catalyst activity, high thermal stability, etc., achieve less mercury loss, high activity and stability, and prolong service life Effect

Inactive Publication Date: 2014-04-02
李世禄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved in the present invention is to provide a composite metal chloride catalyst for the above deficiencies, which overcomes the defects of low catalyst activity, high thermal stability and high mercury content in the prior art. The catalyst of the present invention has high activity, high heat Advantages of high stability and low mercury content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, a composite metal chloride catalyst, with a particle diameter of 2.5-3.8mm, a length of 3-8mm, and a porosity ≥ 0.58cm 3 / g, specific surface area ≥ 1200m 2 / g, 910Kg columnar activated carbon with mechanical strength ≥ 95% is used as the carrier, and it is made after absorbing mercury chloride, zinc chloride, calcium chloride and barium chloride under the condition of 90-98 °C, the weight percentage of mercury chloride Content is 6.5%, and the weight percentage content of zinc chloride is 1%.

[0031] The production process of above composite metal chloride catalyst is:

[0032] 1. The 910Kg particle size is 3.5-3.8mm, the length is 4-8mm, and the porosity is ≥0.56cm 3 / g, specific surface area ≥ 1000m 2 / g, columnar activated carbon with mechanical strength ≥ 95% is placed in a drying room, and dried to constant weight below 100°C, that is, anhydrous state.

[0033] 2. Take by weighing 84Kg of mercury chloride with a purity ≥ 98%, and auxiliary agent...

Embodiment 2

[0039] Embodiment 2, a composite metal chloride catalyst, with a particle diameter of 2.5-3.8mm, a length of 3-8mm, and a porosity ≥ 0.58cm 3 / g, specific surface area ≥ 1200m 2 / g, 920Kg columnar activated carbon with mechanical strength ≥ 95% is the carrier, made after absorbing mercuric chloride, zinc chloride, calcium chloride, barium chloride under the condition of 90-98°C, in weight percentage, wherein The weight percentage content of mercuric chloride is 4.1%, and the weight percentage content of zinc chloride is 4%, and its production process is:

[0040]1. The 920Kg particle size is 2.5-3.8mm, the length is 3-8mm, and the porosity is ≥0.58cm 3 / g, specific surface area ≥ 1200m 2 / g, columnar activated carbon with a mechanical strength ≥ 95% is placed in a drying room, and dried to a constant weight below 100°C, that is, an anhydrous state;

[0041] 2. Take 44Kg of mercuric chloride with a purity of ≥98%, and auxiliary agents; auxiliary agents include zinc chloride,...

Embodiment 3

[0045] Embodiment 3, a composite metal chloride catalyst, with a particle diameter of 2.5-3.8mm, a length of 3-8mm, and a porosity ≥ 0.58cm 3 / g, specific surface area ≥ 1200m 2 / g, 920Kg columnar activated carbon with mechanical strength ≥ 95% is the carrier, made after absorbing mercuric chloride, zinc chloride, calcium chloride, barium chloride under the condition of 90-98°C, in weight percentage, wherein The weight percentage content of mercuric chloride is 4.1%, and the weight percentage content of zinc chloride is 4%, and its production process is:

[0046] 1. The 920Kg particle size is 2.5-3.8mm, the length is 3-8mm, and the porosity is ≥0.58cm 3 / g, specific surface area ≥ 1200m 2 / g, columnar activated carbon with a mechanical strength ≥ 95% is placed in a drying room, and dried to a constant weight below 100°C, that is, an anhydrous state;

[0047] Before the columnar activated carbon is dried in the drying room, it is pretreated: the columnar activated carbon is ...

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Abstract

The invention discloses a composite metal chloride catalyst. The catalyst is prepared by adopting active carbon with the porosity being more than or equal to 0.58cm<3> / g, the specific area being more than or equal to 1200m<2> / g and the mechanical strength being more than or equal to 95% as a carrier and absorbing mercury chloride, zinc chloride, calcium chloride and barium chloride under the condition with the temperature of 90-98 DEG C, wherein the content of the mercury chloride is 2.5-6.5% and the content of the zinc chloride is 1-15%. The catalyst disclosed by the invention has the advantages that the activity and the stability are respectively improved by 5-20% and 10-20% compared with the existing catalyst containing 10.5-12.5% of mercury chloride; under the condition without reducing the activity of the catalyst, the used amount of the mercury chloride can be greatly reduced, the production cost of the catalyst can be greatly reduced, the consumption of a mercury source can be greatly reduced, the service life of the catalyst also can be greatly prolonged, the used amount of the catalyst can be greatly reduced, the time for replacing the catalyst can be greatly saved, so that the production cost of vinyl chloride is greatly reduced; in production, the catalyst consumed is less and the lost mercury is less, the pollution of the lost mercury to the environment and the hazard caused by the mercury entering a product to the product can be obvious reduced.

Description

technical field [0001] The invention relates to a catalyst for the addition reaction of hydrogen chloride gas and acetylene gas to synthesize vinyl chloride, in particular to a composite metal chloride catalyst and a production process thereof, belonging to the technical field of chemical industry. Background technique [0002] At present, domestic enterprises use hydrogen chloride gas and acetylene gas for addition reaction to synthesize vinyl chloride. Under the condition of ℃, soak the activated carbon in the mercuric chloride aqueous solution for 8-24 hours, absorb the mercuric chloride by physical adsorption, and then dry it so that the water content in the activated carbon is less than 0.3%, and the mercuric chloride content is 10.5-12.5 % made mercuric chloride catalyst. [0003] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the catalyst obtained by the above method has the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138C07C21/06C07C17/08
Inventor 李世禄
Owner 李世禄
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