Beijing Sj Environmental Protection and New Material Co., Ltd.

Ninebot (beijing) Tech Co., Ltd

Liying Li

Lei Liu

Wei Li

Zhenyi Liu

Zhimin Zhang

Haoran Liu

Wenjun Mao

Dayong Xu

Wenwen Song

Zhilin Wu

Zheng Jin

Jinbo Shao

Liqiang Wu

Boshu Liu

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Provided is a high-concentration carbonyl sulfide conversion-absorption type desulfurizer for use at medium-low temperature and preparation method thereof. The desulfurizer comprises 50%-75% magnetic iron oxide red (FeO), 5%-10% alkali metal oxide (KO), 5-35% anatase TiO, and 5-10% shaping binder. The method of preparing the desulfurizer comprises: uniformly mixing a metatitanic acid prepared using ferrous sulfate recycled as a by-product from titanium dioxide production with KCO, calcining to activate at 500&#xb0; C.-700&#xb0; C., mixing with the magnetic iron oxide red and binder, roll molding at room temperature to form balls which are dried at 100&#xb0; C.-150&#xb0; C. to obtain the desulfurizer. The desulfurizer has a hydrolysis conversion of carbonyl sulfide higher than 99%, and has a higher sulfur capacity more than 25%.

Desulfurizer for conversion and absorption of high-concentration carbonyl sulfide and a desulfurizer for catalytic conversion and absorption of carbon disulfide and their preparation methods

The present invention relates to a novel use of magnetic iron oxide red FeOas a catalyst in oxidizing methanthiol to prepare dimethyl disulfide. The magnetic iron oxide red FeOaccording to the present invention has extremely high catalytic selectivity in catalyzing and oxidizing methanthiol to prepare dimethyl disulfide. The magnetic iron oxide red FeOis prepared with a carbonate and a ferrite as raw materials, has advantages of low cost and simple preparation process, and is suitable for industrial production.

Use of magnetic iron oxide red in catalyzing and oxidizing methanthiol and methods for preparing and appling same

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Beijing, China

Liying Li