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Method for preparing adsorbent capable of simultaneously removing hydrogen sulfide, hydrogen phosphide and arsenic hydride

A hydrogen sulfide and phosphine technology, which is applied in the preparation of arsine hydrogen sorbent, phosphine, and hydrogen sulfide removal at the same time, can solve the problems that the preparation method of mesoporous silicon-based adsorbent has not been reported, and achieve high selectivity Excellent adsorption performance, good removal effect, and large specific surface area

Active Publication Date: 2015-09-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, regarding the simultaneous adsorption and removal of H 2 S.PH 3 and AsH 3 The preparation method of the mesoporous silicon-based adsorbent has not been reported

Method used

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  • Method for preparing adsorbent capable of simultaneously removing hydrogen sulfide, hydrogen phosphide and arsenic hydride
  • Method for preparing adsorbent capable of simultaneously removing hydrogen sulfide, hydrogen phosphide and arsenic hydride
  • Method for preparing adsorbent capable of simultaneously removing hydrogen sulfide, hydrogen phosphide and arsenic hydride

Examples

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Embodiment 1

[0024]Grind and sieve diatomite into 40-60 meshes, then wash 4-6 times with water until the supernatant is suspended without turbidity, and dry in a blast drying oven at 100°C for 5 hours; Stir and impregnate in a 1mol / L HCl solution for 30 minutes for 0.5 hours, then wash with distilled water until the pH is constant, filter and dry in a blast drying oven for 5 hours at 100°C; add the dried diatomaceous earth to the metal Saline solution (composed of 2% ferric nitrate by diatomite mass, 1% copper nitrate by diatomite mass, and 2% cobalt nitrate by diatomite mass) was ultrasonically immersed for 40 minutes, and then the impregnated diatomite was placed in Dry in a blast drying oven at 100°C for 5 hours, and then bake at 500°C for 3 hours; put the calcined diatomite into a 5% HCl solution and ultrasonically impregnate it for 0.5 hours (the temperature of immersion is 50 °C), and then the impregnated diatomite was dried in a blast drying oven at 100 °C for 5 hours to obtain a me...

Embodiment 2

[0026] Grind and sieve diatomite into 40-60 meshes, then wash 4-6 times with water until the supernatant is suspended without turbidity, and dry in a blast drying oven at 110°C for 6 hours; Stir and impregnate in a 2mol / L HCl solution for 40 minutes for 0.6 hours, then wash with distilled water until the pH is constant, filter and dry in a blast drying oven for 6 hours at 110°C; add the dried diatomaceous earth to the metal Saline solution (composed of 4% ferric nitrate by diatomite mass, 2% copper nitrate by diatomite mass, and 4% cobalt nitrate by diatomite mass) was ultrasonically immersed for 50 minutes, and then the impregnated diatomite was placed in Dry in a blast drying oven at 110°C for 6 hours, then bake at 600°C for 4 hours; put the calcined diatomite into 15% HNO 3 Ultrasonic immersion in the solution for 0.6 hours (the immersion temperature is 45°C), and then the impregnated diatomite was dried in a blast drying oven at 110°C for 6 hours to prepare the mesoporous ...

Embodiment 3

[0028] Grind and sieve diatomaceous earth into 40~60 meshes, then wash 4~6 times with water until the supernatant is suspended without turbidity, and dry in a blast drying oven at 120°C for 7 hours; Stir and impregnate in a 3mol / L HCl solution for 50 minutes for 0.7 hours, then wash with distilled water until the pH is constant, filter and dry in a blast drying oven at 120°C for 7 hours; add the dried diatomaceous earth to the metal Saline solution (composed of 6% ferric nitrate by diatomite mass, 3% copper nitrate by diatomite mass, and 6% cobalt nitrate by diatomite mass) was ultrasonically immersed for 60 minutes, and then the impregnated diatomite was placed in Dry in an air blast oven at 120°C for 7 hours, then bake at 450°C for 4.5 hours; put the calcined diatomite into 20% H 2 SO 4 Ultrasonic immersion in the solution for 0.7 hours (the immersion temperature is 40°C), and then the impregnated diatomaceous earth was dried in a blast drying oven at 120°C for 7 hours to...

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Abstract

The invention discloses a method for preparing an adsorbent capable of simultaneously removing hydrogen sulfide, hydrogen phosphide and arsenic hydride and belongs to the adsorbent preparation field. The method comprises the steps of grinding, washing and drying the diatomaceous earth, adding the dried diatomaceous earth in the HCl solution, stirring and standing the solution, washing the solution by utilizing distilled water till the pH value of the solution to be neutral, filtering the solution and drying the filtrate; adding the dried diatomaceous earth in a metal salt solution for ultrasonic impregnation, standing the impregnated diatomaceous earth at the normal temperature, drying and calcinating the diatomaceous earth, adding the calcined diatomaceous earth in an acidic solution for ultrasonic immersion, and drying the impregnated diatomaceous earth to obtain a mesoporous silica-based adsorbent. According to the technical scheme of the invention, the preparation method is simple in operation, wherein the HCl solution and the metal salt impregnant are cheap and readily available. Therefore, the method is suitable for industrial application. At a low temperature, the removal effect is still good. In this way, the method can be widely applied to the simultaneous removal of hydrogen sulfide, hydrogen phosphide and arsenic hydride for all kinds of gas sources.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent for simultaneously removing hydrogen sulfide, phosphine and arsine, and belongs to the field of adsorbent preparation. Background technique [0002] h 2 S and PH 3 Widely present in the atmospheric environment, it will cause serious pollution and harm to the environment and human body when it is discharged into the atmospheric environment during industrial production and use. h 2 S is easy to cause catalyst poisoning and deactivation, and has a corrosive effect on industrial production equipment. In addition, H emitted to the atmosphere without treatment 2 S can form sulfur dioxide, promote photochemical reactions, and eventually transform into sulfate aerosols, causing serious environmental problems. There will also be AsH in the flue gas emitted by industrial production 3 the presence of AsH 3 It is a colorless, garlic-smelling, highly toxic and deadly gas at room temperature. Alth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/14B01J20/30B01D53/02
Inventor 李凯李山宁平郝吉明汤立红黄彬王英伍王驰刘贵
Owner KUNMING UNIV OF SCI & TECH
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