Activated carbon for preparing catalyst for calcium carbide process vinyl chloride and preparation method of activated carbon

Abstract

The invention provides activated carbon for preparing a catalyst for calcium carbide process vinyl chloride and a preparation method of the activated carbon. The activated carbon is nitrogen-containing activated carbon, and the nitrogen content of the activated carbon is 0.1-10%. The preparation method of the activated carbon comprises the following steps of: the selecting of the activated carbon,the pickling of the activated carbon and the dipping of theactivated carbon. The prepared activated carbon is high in adsorption capacity and low in impurity content; when the activated carbon is used for preparing a calcium carbide process vinyl chloride catalyst, the adsorption capacity of the catalyst to non-polar molecules such as acetylene and hydrogen chloride is effectively enhanced, no adverse effect is caused to the stability and catalytic efficiency of the catalyst, and the catalyst is good in stability; the resistance of the catalyst to temperature, poison, mechanical force, chemical erosion, coking, dirt accumulation and the like in a reaction process is high; the initial conversion rate of acetylene is greater than 99.0%; the selectivity of vinyl chloride is greater than 99.5%.

Description

technical field [0001] The invention relates to the field of polyvinyl chloride catalyst carrier, in particular to an activated carbon for preparing a catalyst for calcium carbide method vinyl chloride and a preparation method thereof. Background technique [0002] Polyvinyl chloride, English abbreviation PVC (Polyvinyl chloride), is a vinyl chloride monomer (vinyl chloridemonomer, referred to as VCM) in peroxide, azo compound and other initiators or under the action of light and heat according to the mechanism of free radical polymerization. made polymers. PVC is one of the most produced general-purpose plastics in the world, and its application is very extensive. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc. [0003] At present, my country's polyvinyl chloride production process mainly inc...

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Problems solved by technology

[0012] (1) To overcome the weak adsorption capacity of the existing non-precious metal catalyst carrier for non-polar molecules, which restricts the catalytic activity of the catalyst under low temperature reaction conditions and becomes a shortcoming of the improvement of the catalyst's reactivity;

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