Catalyst for organic sulfur hydrolysis and preparation method thereof

Abstract

The invention discloses a catalyst for organic sulfur hydrolysis and a preparation method thereof, and belongs to the field of catalysts.The preparation method comprises the steps that alpha-gibbsite particles are soaked in an aqueous solution of alcohol, and a mixed solution is obtained; carrying out hydrothermal treatment on the mixed solution by utilizing a hydrothermal reaction kettle, and then filtering and draining to obtain a drained sample; putting the drained sample into a drying oven, and introducing nitrogen for drying to obtain a dried sample; putting the dried sample into a tubular furnace for roasting, and cooling to obtain the catalyst for organic sulfur hydrolysis. The prepared catalyst is x-Al2O3, when the catalyst is used as a catalyst for organic sulfur hydrolysis, the organic sulfur hydrolysis rate can be remarkably increased, meanwhile, the preparation method is simple, and x-Al2O3 is low in cost and convenient to popularize and use on a large scale.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a catalyst for hydrolysis of organic sulfur and a preparation method thereof. Background technique [0002] In industries such as oil refining, natural gas purification, and coal chemical industry, sulfur recovery equipment is usually used to recover sulfur. During operation, the combustion furnace in the sulfur recovery equipment will inevitably produce CS 2 and organic sulfur in the form of COS. Most of these organic sulfur will undergo hydrolysis reaction under the action of the catalyst in the Claus reactor, and the unhydrolyzed organic sulfur will enter the incineration furnace, and finally become SO 2 The form is exhausted into the atmosphere through the chimney. Therefore, in order to reduce exhaust SO 2 emissions, it is necessary to increase the rate of organic sulfur hydrolysis. [0003] In the related art, the catalysts used for the hydrolysis of organosulfur include: γ-Al ...

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Problems solved by technology

[0003] In the related art, the catalysts used for the hydrolysis of organosulfur include: γ-Al 2 o 3 Catalysts and titanium-based catalysts, wherein, γ-Al 2 o 3 The catalyst is prone to sulfation in the sulfur recovery unit, resulting in a rapid decline in the hydrolysis rate of organic sulfur and poor hydrolysis effect

Titanium-based catalysts are not easy to be sulfated, and the hydrolysis rate of organic sulfur can reach more than 90%, but the cost of the catalyst is relatively high, and the price is γ-Al 2 o 3 More than 5 times that of the catalyst, which is not conducive to wide application

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