Regeneration method of catalyst containing manganese oxide molecular sieve

Abstract

The invention provides a regeneration method of a catalyst containing a manganese oxide molecular sieve. The regeneration method comprises the following steps: placing the catalyst containing the manganese oxide molecular sieve after adsorbing hydrogen sulfide in an extraction chamber; introducing an organic solvent into the extraction chamber, carrying out extraction treatment, filtering and drying an obtained product, and putting the product into a regeneration chamber; and introducing oxidizing gas into the regeneration chamber, heating the regeneration chamber to a regeneration temperature, and then keeping the constant temperature for oxidation regeneration, so that the catalyst containing the manganese oxide molecular sieve recovers the desulfurization activity. The regeneration method disclosed by the invention is simple, convenient and easy to implement, good in repeatability, stable in regenerated catalyst property, recoverable in sulfur capacity, capable of reducing generation of hazardous wastes and hazardous solids caused by frequent agent replacement, capable of reducing the desulfurizer cost and the environmental protection cost, and beneficial to industrial popularization.

Description

technical field [0001] The invention relates to the field of catalyst regeneration, in particular to a catalyst regeneration method containing manganese oxide molecular sieves. Background technique [0002] Hydrogen sulfide (H 2 S) is a corrosive, toxic gas with a foul odor that exists in air, water, natural gas, crude oil, industrial production, and urban and agricultural sewage. Hydrogen sulfide is very harmful to human health and can also cause environmental pollution. Hydrogen sulfide will be produced in many industrial production processes. Hydrogen sulfide is produced during the production of coal gas and natural gas, and a large amount of hydrogen sulfide is also contained in catalytic hydrodesulfurization tail gas and flue gas emitted from coal-fired power plants. A large amount of hydrogen sulfide gas is also produced in some other nitrogen fertilizer factories, pesticide factories, tanneries and other production processes. H present in industrial processes 2 S ...

AI Technical Summary

Problems solved by technology

However, conventional oxide desulfurizers have disadvantages such as low sulfur capacity, high bed penetration speed at high concentrations of hydrogen sulfide, and high desulfurization reaction temperature. For example, zinc oxide desulfurizers are easily reduced to Zn and evaporated at high temperatures, resulting in loss of active phase; Manganese oxide desulfurizer is commonly used for medium and high temperature removal, and the sulfur capacity is low at low temperature

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