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Desulfurizer with high sulfur capacity for eliminating sulfur alcohol, sulphide and hydrogen sulfide through catalytic oxidation, and preparation

A technology of catalytic oxidation and desulfurization agent, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the complex preparation method, high cost, low sulfur capacity, etc. problems, to achieve the effect of simplifying the process flow, saving energy consumption, and strong adaptability

Active Publication Date: 2007-10-10
DALIAN CATALYTIC ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Or the metal oxide is loaded on the support, and the mercaptan is removed by means of the catalytic action of the metal oxide and its chemical adsorption ability to sulfide, such as US Patent US.6207106, MnO 2 , CuO, ZnO, NiO, Co 2 o 3 Metal oxides such as Ag, Cu, Fe, Mn and other metal oxides are carried on the coconut shell carbon, which can remove malodorous gases such as mercaptans in the ambient gas; Japanese Patent JP. Loaded on Y-type and X-type molecular sieves, it can remove odorous gases such as mercaptans in ambient gases; Chinese patent ZL00114588.6 impregnates oxides or salts of Cu, Na, Si, etc. In addition to mercaptans and disulfides in industrial gases; these patents are limited by the loading of metal oxides, and their sulfur capacity is low, generally 2% to 8%. At the same time, the desulfurizer must be prepared in a protective atmosphere. Lower roasting, its preparation method is complicated, the cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 10g Na 2 CO 3 , 1.5g MgSO 4 , 0.5g NaAlO 2 , 0.2g of sodium phosphate, 0.1g of sodium sulfonate were dissolved in 100ml of water to make an impregnating solution, and 100g of water-washed coal-based activated carbon was mixed and impregnated, and then dried at 60°C for 4 hours to obtain a particle size of Φ1.5× 4mm desulfurizer. The desulfurization reactor used in the performance evaluation experiment is a Φ15×50mm stainless steel tube, the desulfurization agent is the original particle size, the desulfurization agent loading volume is 6ml, the reaction temperature is 15°C, and the space velocity is 3000h -1 , the content of methyl mercaptan in the feed gas is 1000ppm, the oxygen concentration is 0.5%, and the relative humidity is 40%. Its breakthrough sulfur capacity is 6.3%, and its working sulfur capacity is 12.4%.

Embodiment 2

[0021] 5g Na 2 CO 3 , 5g MgSO 4 , 0.5g Na 2 SiO 3 1. Dissolve 0.2g of sodium phosphate in 100ml of water to make an impregnating solution, mix and impregnate 100g of coal-based activated carbon washed with water, and then dry at 30°C for 12 hours to obtain a desulfurizer with a particle size of Φ1.5×4mm. The desulfurization reactor used in the performance evaluation experiment is a Φ15×50mm stainless steel tube, the desulfurization agent is the original particle size, the desulfurization agent loading volume is 6ml, the reaction temperature is 15°C, and the space velocity is 3000h -1 , the content of methyl mercaptan in the feed gas is 1000ppm, the oxygen concentration is 0.5%, and the relative humidity is 40%. Its breakthrough sulfur capacity is 2.4%, and its working sulfur capacity is 10.5%.

Embodiment 3

[0023] 5g Na 2 SO 4 , 0.5g of calcium oxide was dissolved in 80ml of water to make an impregnation solution, and then 1.5g of NaNO 3 , 1.5gMgSO 4 , 0.2g of sodium sulfonate was dissolved in 20ml of water to make an impregnating solution; 100g of washed fruit shell activated carbon was impregnated with these two impregnating solutions, and then dried at 60°C for 12 hours to obtain a particle size of Φ1.5 ×4mm desulfurizer. The desulfurization reactor used in the performance evaluation experiment is a Φ15×50mm stainless steel tube, the desulfurization agent is the original particle size, the desulfurization agent loading volume is 6ml, the reaction temperature is 15°C, and the space velocity is 3000h -1 , the content of methyl mercaptan in the feed gas is 1000ppm, the oxygen concentration is 0.5%, and the relative humidity is 45%. Its breakthrough sulfur capacity is 7.4%, and its working sulfur capacity is 16.5%.

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Abstract

A desulfurizing with high sulfur capacity for removing thiols, thioether and hydrogen sulfide from natural gas, petroleum gas, and other industrial gases is composed of carrier (activated carbon) and catalyzing component prepared from metallic oxide or salt (0.1-5 Wt%), modifier (2-10) and promoter (0.01-0.5). Its preparing process includes such steps as pre-treating activated carbon, impregnating the catalytic component, and drying.

Description

technical field [0001] The present invention relates to the desulfurization technology of industrial gas, and in particular provides a high-sulfur-capacity desulfurizer that can simultaneously catalytically oxidize and remove mercaptan, sulfide, and hydrogen sulfide in natural gas, petroleum associated gas, refinery gas, coal-based gas, and other industrial gases. Desulfurizer and its preparation method. Background technique [0002] Sulfides widely exist in industrial gas sources such as natural gas, petroleum-associated gas, refinery gas, and coal-to-gas, which not only cause environmental pollution, corrode metal pipes and equipment, but also shorten the life of downstream catalysts due to poisoning, and even cause some Catalytic reactions cannot proceed. Therefore, the removal of sulfides in industrial gas sources not only helps to prolong catalyst life, protect metal pipes and equipment, improve product quality, but also reduce operating costs of industrial production ...

Claims

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Application Information

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IPC IPC(8): B01J21/04B01J23/02B01J27/055B01J37/02B01D53/48
Inventor 吴迪镛刘振峰付桂芝肖峰李秀贞李学令娄肖杰
Owner DALIAN CATALYTIC ENG TECH
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