Desulphurization denitration catalytic filler used for catalytic desulfurization tower and preparation method thereof

Abstract

The invention relates to a preparation method of high-efficiency desulphurization denitration catalytic filler used for catalytic desulfurization tower, belonging to the technical field of preparation technique of special catalytic filler for catalytic desulfurization tower for desulphurization denitration treatment of flue gas or waste gas. The method is characterized in that metal catalytic active substances of nickel and cadmium are added into the conventional fillers according to a certain proportion; and the obtained mixture is put into a mold, pressed, molded and burned into porous catalytic desulfurization filler by raising the temperature under a certain procedure. The raw materials and the weight percentage thereof of the catalytic filler are as follows: 35 to 42 percent of iron powder (10 to 40 meshes), 35 to 42 percent of graphite powder (80 to 100 meshes), 12 to 18 percent of ultra-high molecular polypropylene (80 to 100 meshes), 1.8 to 3 percent of nickel powder (10 to 40meshes), 1.8 to 3 percent of cadmium powder (10 to 40 meshes), 35 to 42 percent of iron powder, 35 to 42 percent of graphite powder, 12 to 18 percent of ultra-high molecular polypropylene, 1.8 to 3 percent of nickel and 1.8 to 3 percent of cadmium. In specific application, the catalytic filler can accelerate the reaction velocity by 15 to 25 percent compared with the filler used for the conventional catalytic desulfurization tower. The desulfurization rate is improved by 10 to 20 percent under the same time.

Description

technical field [0001] The invention relates to a high-efficiency desulfurization and denitrification catalytic packing for catalytic desulfurization towers and a preparation method thereof, and belongs to the technical field of catalytic packing materials for catalytic desulfurization towers for desulfurization and denitrification of flue gas or waste gas treatment and its preparation technology. Background technique [0002] The existing desulfurization equipment has two types: dry method and wet method, and there are more than ten kinds of practical equipment. When dealing with gas pollutants such as sulfur dioxide and nitrogen oxides in smoke and exhaust gas, most of them use limestone / lime method, ammonia method, sodium desulfurization method, etc. The method, the aluminum method, and the metal oxide method are effective in treating low-concentration sulfur dioxide, but the amount of absorbent added is large, resulting in a large amount of slag, which is difficult to han...

AI Technical Summary

Problems solved by technology

Over the past 30 years, my country has developed more than 30 kinds of desulfurization catalysts and methods for wet oxidation, some of which have not been resolved due to high desulfurization costs, serious sulfur blockage, or safety and environmental protection problems.