Desulfurizing agent and preparation method thereof

A desulfurizer and binder technology, applied in the field of desulfurizers, can solve the problems of poor desulfurization effect and low sulfur capacity of desulfurizers, and achieve the effects of high sulfur capacity, increased sulfur capacity, and improved desulfurization accuracy

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] 1) The desulfurizer in this prior art has low sulfur capacity and poor desulfurization effect, which cannot meet the requirements of the current petrochemical industry, especially the imported hydrogen production process and coal-to-gas FT synthesis process for desulfurization accuracy of 0.05ppm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 2 kg of cellulose powder was added to 70 liters of water to prepare a translucent pore-forming agent slurry, and 40 kg of nano-zinc oxide, 50 kg of copper oxide, and 10 kg of attapulgite were added to the slurry, and a mixture was formed after stirring evenly. 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 100°C for 8 hours and then fired at 350°C for 3 hours to obtain the finished desulfurizer of the present invention. The breakthrough sulfur capacity of the desulfurizer at 200°C is 27.6wt%.

Embodiment 2

[0037] Adding 1 kg of scallop powder to 70 liters of water to prepare a pore-forming agent slurry, and adding 70 kg of nano-zinc oxide, 13.5 kg of copper carbonate, and 20 kg of kaolin to the slurry and stirring evenly to form a mixture. 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 330°C for 4 hours to obtain the finished desulfurizer of the present invention. The breakthrough sulfur capacity of the desulfurizer at 30°C is 15.5wt%.

Embodiment 3

[0039] Mix 5 kg of celadon powder, 90 kg of nanometer zinc oxide, 10 kg of copper oxide and 70 kg of water, and stir evenly to form a mixture. 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 29.1wt%.

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Abstract

The invention relates to a desulfurizing agent, which comprises the following compositions in percentage by weight: 40 to 90 percent of nanometer-sized zinc oxide, 5 to 50 percent of cupric oxide and 0 to 20 percent of caking agent. The method for preparing the desulfurizing agent comprises the following steps: firstly, mixing the nanometer-sized zinc oxide, the cupric oxide, the caking agent, a pore creating material and water to form a mixture, wherein the weight ratio of the nanometer-sized zinc oxide to the cupric oxide to the caking to the pore creating material is 40-90:5-50:0-20:1-10; secondly, pinching and forming the mixture to obtain a formed object; and finally, drying and baking the formed object so as to obtain the desulfurizing agent. The desulfurizing agent has high sulfur capacity, can remove sulfureted hydrogen and other sulphides with high accuracy, and realize desulfurization with high accuracy at lower temperature, thereby reducing the requirement of desulfurizing equipment on thermal resistant strength, resistance of oxidation, and the like.

Description

technical field [0001] The invention belongs to the field of desulfurizers, in particular to a desulfurizer used for high-precision removal of hydrogen sulfide and other sulfides in various materials and a preparation method thereof. Background technique [0002] With the development of the petrochemical industry, the sulfur content in crude oil is getting higher and higher, so high-precision desulfurization of raw materials is necessary to meet the needs of further production or processing. At present, the desulfurizer commonly used in the field of high-precision hydrogen sulfide removal at home and abroad is usually zinc oxide, but this type of desulfurizer can only reduce the content of hydrogen sulfide in raw materials to 0.1PPm in industry, and the desulfurization at 220 ° C The breakthrough sulfur capacity is not more than 20wt%, while the breakthrough sulfur capacity at normal temperature is only 5-10wt%. [0003] US Patent No. 4,455,286 discloses a desulfurizer for ...

Claims

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Application Information

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IPC IPC(8): B01D53/48
Inventor 冯续蒲延芳王宏伟
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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