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

Wenjun Mao

Zhenyi Liu

Zhimin Zhang

Liying Li

Wenwen Song

Gang Zhao

Tong Zhou

Fengren Liu

Qunyang Gao

Bingyi Li

Fujiang Hong

Boshu Liu

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

A method of preparing magnetic iron oxide FeO, which includes the steps of preparing a solid green rust and calcining the solid green rust to obtain the magnetic iron oxide FeO. Also provided is the application of magnetic iron oxide FeOas an active material in desulfurization at a medium temperature. Also provided is a desulfurizer which uses magnetic iron oxide FeOand the application thereof. The present preparation method has simple steps and a short production period.

Preparation method and application of magnetic iron oxide and desulfurizer containing the magnetic iron oxide as active component

The present invention provides a process for preparing ball-type desulfurizer with high sulfur capacity, comprising the following steps: placing initial balls in a rolling equipment; wetting the surface of the initial balls with an aqueous solution of an organic binder; then alternately adding non-crystalline iron oxide hydroxide and the aqueous solution of the organic binder to gradually form small balls of non-crystalline iron oxide hydroxide with high sulfur capacity and different diameters; and adjusting the shape of the small balls and then roasting or naturally drying the small balls. In the desulfurizer prepared by this method, the initial balls constitutes 0.98 wt %-9.03 wt % of the desulfurizer, the non-crystalline iron oxide hydroxide constitutes 90.29 wt %-98.62 wt % of the desulfurizer, and the organic binder constitutes 0.58 wt %-0.89 wt % of the desulfurizer. The present invention solves the problems that the desulfurizer with high sulfur capacity in the prior art has a high binder content and poor water resistance and diffusion performance, and provides a process for preparing a desulfurizer with high sulfur capacity, wherein a desulfurizer with high sulfur capacity and low binder content, good water resistance, good diffusion performance can be prepared.

Process for preparing ball-type desulfurizer with high sulfur capacity and product thereof

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Beijing, China

Wenjun Mao