Multicomponent composite desulfate catalyst

Abstract

A multi-element de-sulfurizing catalyst for the raw gas contains proportionally phthalocyanine cobalt derivative, polyphenol compound, Fe salt, the ligand of Fe salt for generating complex and V compound.

Description

technical field [0001] The invention relates to a wet oxidation desulfurization catalyst, in particular to a multi-element composite system desulfurization catalyst. The desulfurization catalyst is mainly used for the desulfurization and decyanation of semi-water gas and shift gas in the ammonia synthesis industry. It can also be used for the removal of inorganic sulfur, organic Sulfur industry. Background technique [0002] In the chemical processing process of coal, natural gas, petroleum gas, petroleum and its products as raw materials, the sulfur in the raw materials must be converted into sulfides (hydrogen sulfide, carbon oxides of sulfur, carbon disulfide, mercaptans, sulfides, thiophenes, etc.) , Organic nitrogen compounds are converted into hydrogen cyanide, and their existence seriously affects the chemical processing process-making the catalyst poisoned and unable to operate, corroding equipment, affecting product quality and polluting the environment. Therefore...

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Problems solved by technology

The above-mentioned methods and desulfurization catalysts have their own advantages, but there are some defects. Some of these methods have small sulfur capacity, low desulfurization efficiency, some cannot operate stably for a long time, some have high operating costs, and some are difficult to regenerate. In the process of use, secondary pollution is also generated, and there is a common disadvantage that the removal rate of the increasingly high sulfur contained in the raw material is not high

[0004] Cobalt phthalocyanine sulfonate catalyst, as a desulfurization catalyst with excellent performance, has been widely used in the desulfurization of various industrial gases since the 1980s. After that, people have continuously introduced improved cobalt phthalocyanine desulfurization catalysts to Overcome the shortcomings of low desulfurization rate and unstable operation

Among these improved phthalocyanine cobalt desulfurization catalysts, the catalyst of CN96119502 is relatively successful with the patent No., and its desulfurization rate can reach 99% in the conventional desulfurization process (the sulfur content in the gas is below 1.5 grams per cubic meter). But for the increasingly higher high-sulfur (sulfur content in the gas is more than 5 grams per cubic meter) system in modern industrial gas, the desulfurization rate is only about 90%, which cannot meet the desulfurization requirements of high-sulfur industrial gas

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