Impregnating device for preparation of mercury-free catalyst for acetylene hydrochlorination

Abstract

The invention discloses an impregnating device for preparation of a mercury-free catalyst for acetylene hydrochlorination. The impregnating device comprises a motor, a double-cone rotary vacuum sealing cylinder, a machine frame, a vacuum filtering apparatus, a heat supply apparatus and a detection apparatus; an enamel glass layer is sprayed to the inner wall of the double-cone drying cylinder, anda jacket is coated at the outer side of the double-cone drying cylinder; in the working process, water steam is introduced into the jacket of a tank body to indirectly heat the material in the tank body; the interior of the tank body is vacuumized, so that a certain vacuum degree is maintained in the tank body, and the drying speed of the material is quick under the negative pressure condition. The impregnating device has the advantages that because the double-cone cylinder for accommodating the material can be continuously rotated, the material can be continuously turned from top to bottom and from interior to exterior, and the high-efficiency, low-consumption, energy-saving and uniform impregnating purposes are realized. The impregnating device has the beneficial effects that the impregnating effect is good, the abrasion-resistant property is realized, the use safety is realized, and the like.

Description

technical field [0001] The invention relates to the field of catalyst preparation equipment, in particular to an impregnator for the preparation of a mercury-free catalyst for acetylene hydrochlorination. Background technique [0002] Vinyl chloride monomer is the basic raw material for the synthesis of chemical products and is widely used in various fields of the national economy. At present, the industrial production of vinyl chloride mainly includes two routes: ethylene method and acetylene method. The ethylene method uses ethylene as a raw material, reacts with chlorine gas under the action of a catalyst to form dichloroethane, and then produces chlorine through thermal decomposition. vinyl. The acetylene method is to generate vinyl chloride directly by acetylene and hydrogen chloride under the action of a catalyst. [0003] Due to the current energy pattern of "more coal and less gas" in my country, the calcium carbide acetylene method is still mainly used in China to...

AI Technical Summary

Problems solved by technology

In the production process of mercury-free catalysts, it is often necessary to impregnate some highly corrosive materials. Most of the inner walls of existing impregnators are made of metal. Over time, the inner walls, vacuum filters and vacuum tubes will be corroded, which will cause material The loss of the macerator will also shorten the life of the macerator

At the same time, most precision devices on the market are statically impregnated, resulting in insufficient impregnation of materials and insufficient impregnation quality

Moreover, most impregnators on the market are heated by a heating plate, which makes the material heated unevenly and easily causes accidents

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