Preparation method and application of spherical adsorbent for efficiently removing low-concentration hydrogen sulfide

An adsorbent, hydrogen sulfide technology, applied in chemical instruments and methods, separation methods, alkali metal oxides/hydroxides, etc., can solve the problems of unsuitability for industrialization, unstable adsorbents, low adsorption capacity, etc. Industrialization, easy to produce widely, high adsorption capacity effect

Inactive Publication Date: 2018-09-25
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of low adsorption capacity, low activity, unstable adsorbent and unsuitability for industrialization in the adsorbent used for removing low-concentration hydrogen sulfide in the prior art, and then provide a high-efficiency removal of low-concentration hydrogen sulfide Preparation method and application of spherical adsorbent with concentrated hydrogen sulfide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of a spherical adsorbent for efficiently removing low-concentration hydrogen sulfide described in this embodiment comprises the following steps:

[0024] Weigh 30.00 g of spherical pseudo-boehmite, dry in an oven at 60 °C for 24 hours, and use the treated spherical pseudo-boehmite as a carrier; weigh 15 g of anhydrous sodium carbonate, add 30 g of deionized water, and stir thoroughly Obtain sodium carbonate salt solution; soak the sodium carbonate salt solution on the spherical pseudo-boehmite to obtain the adsorbent precursor, then dry at 100 °C for 20 h, and roast at 500 °C for 4 h to obtain Na 2 CO 3 : Spherical AlOOH=1:2 adsorbent. Adsorption test conditions: adsorbent mass: 2.50g; gas hydrogen sulfide concentration: 200 ppm; reaction temperature: 20 ℃; pressure: 0.04 Mpa; reaction flow rate: 70 mL / min; 0.1 ppm is the breakthrough sulfur capacity; the breakthrough sulfur capacity is 9334 mg / mL.

Embodiment 2

[0026] The preparation method of a spherical adsorbent for efficiently removing low-concentration hydrogen sulfide described in this embodiment comprises the following steps:

[0027] Weigh 30.00 g of spherical pseudo-boehmite, dry in an oven at 60 °C for 24 hours, and use the treated spherical pseudo-boehmite as a carrier; weigh 7.5 g of anhydrous sodium carbonate, add 19 g of deionized water, and stir thoroughly Obtain sodium carbonate salt solution; soak the sodium carbonate salt solution on the spherical pseudo-boehmite to obtain the adsorbent precursor, then dry at 100 °C for 20 h, and roast at 500 °C for 4 h to obtain Na 2 CO 3 : Spherical AlOOH=1:4 adsorbent. Adsorption test conditions: adsorbent mass: 2.50g; gas hydrogen sulfide concentration: 200 ppm; reaction temperature: 20 ℃; pressure: 0.04 Mpa; reaction flow rate: 70 mL / min; 0.1 ppm is the breakthrough sulfur capacity; the breakthrough sulfur capacity is 15443 mg / mL.

Embodiment 3

[0029] The preparation method of a spherical adsorbent for efficiently removing low-concentration hydrogen sulfide described in this embodiment comprises the following steps:

[0030] Weigh 30.00 g of spherical pseudo-boehmite, dry in an oven at 60 °C for 24 hours, and use the treated spherical pseudo-boehmite as a carrier; weigh 5 g of anhydrous sodium carbonate, add 15 g of deionized water, and stir thoroughly Obtain sodium carbonate salt solution; soak the sodium carbonate salt solution on the spherical pseudo-boehmite to obtain the adsorbent precursor, then dry at 100 °C for 20 h, and roast at 500 °C for 4 h to obtain Na 2 CO 3 : Spherical AlOOH=1:6 adsorbent. Adsorption test conditions: adsorbent mass: 2.50g; gas hydrogen sulfide concentration: 200 ppm; reaction temperature: 20 ℃; pressure: 0.04 Mpa; reaction flow rate: 70 mL / min; 0.1 ppm is the breakthrough sulfur capacity; the breakthrough sulfur capacity is 12211 mg / mL.

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Abstract

The invention discloses a preparation method and application of a spherical adsorbent for efficiently removing low-concentration hydrogen sulfide. The preparation method comprises the following steps:taking pretreated industrialized spherical pseudo-boehmite as a carrier, then soaking the carrier in a certain amount of soluble alkali metal salt solution to obtain an adsorbent precursor, and drying and roasting the adsorbent precursor to obtain a load type adsorbent with high adsorption capacity. The adsorbent disclosed by the invention belongs to a dry desulfurization agent; firstly the adsorbent overcomes the defects caused by using a wet desulfurization agent that a liquid absorbent is used for removing sulfide, the treatment capacity of the equipment is large, the operation of the adsorbent is complicated, the adsorption capacity is low, the requirement of high adsorption capacity is difficult to meet, and especially, the wet process is difficult in meeting the high requirement ofremoving low-concentration hydrogen sulfide; secondly, the spherical adsorbent has the advantages of high adsorption capacity of adsorbing low-concentration hydrogen sulfide, large strength, low costand the like; and the spherical adsorbent is simple in preparation process and easy to produce widely and has good industrialized potential.

Description

technical field [0001] The invention belongs to the technical field of adsorbent preparation, and in particular relates to a preparation method and application of a spherical adsorbent for efficiently removing low-concentration hydrogen sulfide. Background technique [0002] Odor gas is one of the serious pollutants that are widely concerned and valued by countries all over the world, and hydrogen sulfide gas is the main representative of odor gas. Hydrogen sulfide is a colorless, flammable acid gas with the smell of rotten eggs at low concentrations and is easily soluble in water to form hydrogen sulfuric acid. Hydrogen sulfide at lower concentrations has obvious stimulating effect, and at higher concentrations it can paralyze nerves , extremely toxic and cause direct harm to the human body. Hydrogen sulfide can cause air pollution, greenhouse effect and damage to the ozone layer. Hydrogen sulfide is a common poisonous and harmful gas in industrial production, and poisoni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/08B01D53/02
CPCB01D53/02B01D2257/304B01J20/04B01J20/08B01J20/28019
Inventor 袁珮鲍晓军罗曼朱海波王廷海岳源源白正帅
Owner FUZHOU UNIV
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