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Method for preparing desulfurizing agent

A technology of desulfurization agent and binder, which is applied in the field of desulfurization agent preparation, can solve the problem of low dispersion of active components, and achieve the effects of improving desulfurization effect, increasing dispersion and high sulfur capacity

Active Publication Date: 2009-07-22
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is: to overcome the defect of low dispersion of active components in desulfurizers in the prior art, and to provide a kind of active components with high dispersion and high content, which can maintain a relatively high temperature at a relatively low temperature. Preparation method of desulfurizer with high sulfur capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put 2 kilograms of cellulose powder, 45 kilograms of nano zinc oxide, 10 kilograms of attapulgite, and 15 kilograms of sheep liver soil into a mixer and mix to form a mixture. Prepare an aqueous solution of 70.5 kg of copper nitrate with 100 kg of water at 80°C, and load the copper nitrate on the mixed material by equal volume impregnation method; then place the copper-containing mixed material in a steam jacketed pot to evaporate the copper-containing Partial moisture in the element mix. Then put the mixture containing copper element in the kneader, fully knead evenly, put it into the extruder, and extrude the material into strips of Φ4×2-10mm. The molded product is dried at 100°C for 8 hours and then fired at 330°C for 3 hours to obtain the finished desulfurizer of the present invention. The breakthrough sulfur capacity of the desulfurizer at 100°C is 18.8wt%.

Embodiment 2

[0032]Put 1 kilogram of celadon powder, 70 kilograms of nanometer zinc oxide, and 20 kilograms of kaolin into a mixer and mix to form a mixture. Prepare 11.75 kg of copper nitrate and 11.38 kg of copper acetate with 100 kg of water to prepare an aqueous solution at 50°C, and load the copper on the mixed material by equal volume impregnation method; then place the copper-containing mixed material in a steam jacketed pot Part of the moisture in the copper-containing mixture is evaporated. The mixture is put into a kneader and fully kneaded evenly, and then placed into an extruder, and the material is extruded into a Φ4×2-10mm strip shaped product. The molded product is dried at 120°C for 8 hours and then fired at 300°C for 4 hours to obtain the finished desulfurizer of the present invention. The breakthrough sulfur capacity of the desulfurizer at 30°C is 15.9wt%.

Embodiment 3

[0034] Put 5 kilograms of celadon powder and 90 kilograms of nanometer zinc oxide into a mixer and mix to form a mixture. At room temperature, 23.5 kg of copper nitrate is prepared into an aqueous solution with 90 kg of water, and the copper nitrate is loaded on the mixture by impregnation; then the copper-containing mixture is placed in a steam jacketed pot to evaporate the copper-containing mixture Moisture in the middle. The mixture is put into a kneader and fully kneaded evenly, and then placed into an extruder, and the material is extruded into a Φ4×2-10mm strip shaped product. The molded product is dried at 110°C for 7 hours and then fired at 340°C for 4 hours to obtain the finished desulfurizer of the present invention. The breakthrough sulfur capacity of the desulfurizer at 250°C is 29.9wt%.

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Abstract

The invention relates to a preparation method for a desulfurizing agent, which comprises the following steps: a) mixing nanometer-sized zinc oxide, a caking agent and a pore creating material to obtain a mixed material; b) dissolving soluble cupric salt into water to form a solution, and loading the soluble cupric salt on the mixed material by an immersion method to obtain the mixed material containing copper element; c) pinching the mixed material containing the copper element and forming the material to obtain a formed object; and d) drying and baking the formed object to obtain a finished desulfurizing agent. The desulfurizing agent obtained by the preparation method has high dispersion degree in active components; therefore, the finished product not only has high sulfur capacity, but also can achieve the aim of high accuracy desulfurization.

Description

technical field [0001] The invention belongs to the field of desulfurizers, in particular to a preparation method of a desulfurizer used for high-precision removal of hydrogen sulfide and other sulfides in various materials. Background technique [0002] As the sulfur content in the crude oil used is getting higher and higher, people must desulfurize the raw material with high precision to meet the needs of further production or processing. At present, the preparation method of desulfurizer usually adopts mixing and kneading method. For example, Chinese patent CN1712500A discloses a preparation method of desulfurizer. The active component zinc oxide and various additives are mixed, ground, kneaded, formed, dried, roasted, etc. After the step, the finished desulfurizer is obtained. The disadvantage of the mixing kneading method is that the mixed raw materials are placed in a kneader with water in a dry state for direct kneading. In order not to affect the subsequent molding ...

Claims

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Application Information

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IPC IPC(8): B01D53/48
Inventor 蒲延芳冯续闻学兵刘彦芳
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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