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Catalyst for use in hydrolysis of carbonyl sulfide, and method for producing same

A manufacturing method and catalyst technology, which are applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of unreachable COS conversion rate, inability to cope with raw gas, and inability to obtain high COS conversion rate. , to achieve the effect of improving COS conversion rate

Inactive Publication Date: 2020-07-17
三菱重工工程株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at high temperatures, the conversion rate of COS cannot exceed the specified value based on chemical equilibrium, and there is a possibility that it cannot cope with raw material gases containing high concentrations of COS.
In addition, there is a problem that a high COS conversion rate cannot be obtained at low temperature

Method used

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  • Catalyst for use in hydrolysis of carbonyl sulfide, and method for producing same
  • Catalyst for use in hydrolysis of carbonyl sulfide, and method for producing same
  • Catalyst for use in hydrolysis of carbonyl sulfide, and method for producing same

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Embodiment

[0045] Hereinafter, the present invention will be described more specifically using examples. The catalyst for hydrolysis of carbonyl sulfide of the present invention and its production method are not limited to the following examples.

[0046] 1.1. Preparation of Catalyst I

[0047] As Test Example 1, 6 g of the following molded catalyst (2×2 cells, 150 mmL) was prepared, which was molded into a honeycomb shape, and a barium compound was supported on titanium dioxide (TiO 2 ) made. Anatase-type titanium dioxide was used as titanium dioxide as a carrier.

[0048] As Test Example 2, in the molded catalyst of Test Example 1, barium acetate ((CH 3 COO) 2 Ba) Aqueous solution. The shaped catalyst impregnated with water absorption was dried at 110° C., and then fired in air at 500° C. for 3 hours to support barium oxide on the shaped catalyst in an amount of 4% by weight relative to the shaped catalyst. In Test Example 2, 4% by weight of a barium compound was added as a cocat...

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Abstract

Provided are: a catalyst for use in the hydrolysis of COS, which can improve a COS conversion rate at a low temperature; and a method for producing the catalyst. The catalyst for use in the hydrolysisof COS comprises a catalyst containing titanium dioxide supported on a barium compound and an auxiliary catalyst, wherein the auxiliary catalyst is at least one compound selected from the group consisting of a potassium compound, a sodium compound and a cesium compound.

Description

technical field [0001] The present invention relates to a catalyst for hydrolysis of carbonyl sulfide and a production method thereof, in particular to a catalyst for hydrolysis of carbonyl sulfide used in gas turbine fuel gas and a production method thereof. This application claims priority based on Japanese Patent Application No. 2017-251592 filed on December 27, 2017, and uses all of its content. Background technique [0002] Conventionally, in gas production plants such as coal gasification plants, methods of removing sulfur compounds contained in coal gasification gas used as raw material gas, preventing air pollution, and corroding equipment in the plant have been performed. For example, in a combined coal gasification power plant (IGCC), a catalyst that hydrolyzes carbonyl sulfide (COS) is used to convert COS in coal gasification gas into hydrogen sulfide (H 2 After S), remove the H in the gas 2 S, thereby removing sulfur compounds from the raw gas. The gas from wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04B01J37/02B01J37/08C10K1/34
CPCB01J23/02B01J23/04B01J37/02B01J37/08C10K1/34Y02E20/16Y02E20/18C10K1/004B01J21/063B01J37/0203B01J37/0236B01J37/086B01J35/56
Inventor 野地胜己安武聪信吉田香织
Owner 三菱重工工程株式会社
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