Low-temperature fine desulfurizer and its preparation method

A technology of fine desulfurization and desulfurization agent, applied in the field of low-temperature high-precision desulfurization agent, can solve the problems of increasing production cycle, occupying space, and reducing lubricity, so as to avoid the influence of production cycle, ensure desulfurization accuracy, and ensure desulfurization efficiency. Effect

Active Publication Date: 2012-06-27
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned technology, because the surface of the basic zinc carbonate and copper carbonate materials is not smooth, in the process of preparing the fine desulfurizer, due to the rough surface of the material, the degree of lubrication between the components of the fine desulfurizer formed after kneading is reduced, which is manifested as The surface bonding force between the materials is low, it is difficult to realize the physical combination of the material surface through kneading, which in turn affects the molding effect of the fine desulfurizer, and the prepared fine desulfurizer has poor molding uniformity and uneven distribution of pores
[0007] In addition, in the process of preparing the fine desulfurizer, in order to inc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Grind VAH-1 waste catalyst agent into 80 μm powder, mix 40 kg of basic zinc carbonate, 25 kg of copper carbonate, 30 kg of VAH-1 catalyst waste agent powder, and 5 kg of attapulgite and mix them evenly To make a mixture, put the material obtained in the above process into a kneader repeatedly and fully knead evenly, then put it into an extruder, extrude the material into a φ4×2-10mm strip shaped product; dry the formed product at 120°C for 3 The finished product A1 of the low-temperature fine desulfurizer was obtained within hours, and the performance data of A1 after testing are shown in Table 1.

Embodiment 2

[0033] Grind the T202A spent catalyst agent into a powder of 70 μm, mix 60 kg of basic zinc carbonate, 15 kg of copper carbonate, 20 kg of T202A spent catalyst powder, and 5 kg of kaolin and stir to form a mixture. The material obtained in the process is put into the kneader repeatedly and fully kneaded evenly, then placed in the extruder, and the material is extruded into a φ4×2-10mm strip shaped product; the formed product is dried at 100°C for 4 hours to obtain a low-temperature fine desulfurizer Finished product A2, see Table 1 for the performance data of A2 after testing.

Embodiment 3

[0035] Add 10 kg of cellulose powder to 250 kg of water to prepare a translucent pore-forming agent slurry; grind the spent SR-18 catalyst into a powder of 90 μm, mix 40 kg of basic zinc carbonate, 15 kg of copper carbonate, and 25 kg The S2-18 spent catalyst powder and 10 kg of kaolin were mixed together and stirred evenly to make a mixture, then the above-mentioned pore-forming agent slurry was added to the mixture and stirred evenly, and the material obtained in the above process was put into a kneader and kneaded repeatedly and evenly Then put it into extruder, and extrude the material into φ4×2-10mm strip shaped product; dry the formed product at 120°C for 4 hours to obtain finished product A3 of low-temperature fine desulfurizer. The performance data of A3 after testing are shown in Table 1.

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Abstract

The invention relates to a low-temperature fine desulfurizer and its preparation method. Raw materials for preparing the fine desulfurizer are consisting of, by weight, 40-60% of basic zinc carbonate, 15-25% of copper carbonate and at least one component selected from 0-10% of a pore forming agent, 0-10% of a binder and 5-10% of an extrusion aid. The fine desulfurizer is characterized by containing 20-30 wt% of a waste agent which can enhance catalyst strength and simplify the preparation technology. In addition, the preparation raw materials also contain 0-10 wt% of a lubricant which can raise binding performance of the materials. The method comprises the following steps of: uniformly mixing the above materials, adding 5-10 wt% of the extrusion aid, kneading for molding, and drying at 100-120 DEG C for 3-4 hours to obtain the fine desulfurizer used at low temperature. The low-temperature fine desulfurizer is applicable to fine desulphurization of industrial gases such as natural gas, oil-associated gas, refinery flares, coal gas and the like.

Description

technical field [0001] The invention specifically relates to a low-temperature and high-precision desulfurizer, which belongs to the technical field of desulfurizers. Background technique [0002] Most of the feedstock gases used in industrial production such as synthetic ammonia, oil refinery hydrogen production and synthetic methanol are natural gas, petroleum associated gas, refinery waste gas, coal-to-gas and other industrial gases. Since these gases contain a large amount of sulfur, they are In the process, the catalyst used will be poisoned and deactivated due to the presence of sulfur, which will affect the catalytic performance of the catalyst and lead to a decrease in industrial production efficiency. Therefore, it is necessary to remove the sulfur content in the raw gas to a very low level before industrial production Avoid its influence on catalyst performance as much as possible. [0003] As far as the current domestic fine desulfurization technology is conc...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/48
Inventor 赵素云谢红李博冯续王宏宾马海福张宗柏
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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