Acid gas adsorbent as well as preparation method and application of acid gas adsorbent

A technology of acid gas and adsorbent, which is applied to the adsorbent that can absorb acid gas. In the field of preparation of the above-mentioned adsorbent, it can solve the problems of not being able to remove harmful gases well, and achieve low cost of use, simple steps, and easy The effect of the operation

Inactive Publication Date: 2014-09-17
UNIT 92609 OF PLA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the temperature and other conditions change, its adsorption performance will change, and the adsorption and desorption effect is very obvious, and it cannot remove harmful gases in closed spaces such as indoors and cabins.

Method used

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  • Acid gas adsorbent as well as preparation method and application of acid gas adsorbent
  • Acid gas adsorbent as well as preparation method and application of acid gas adsorbent
  • Acid gas adsorbent as well as preparation method and application of acid gas adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 (comparison)

[0032] Firstly, the spherical 5A zeolite is ground into powder, and then sieved through a 200-mesh standard sieve to obtain powder 5A zeolite.

Embodiment 2

[0034] Firstly, the spherical 5A zeolite is ground into powder, and then sieved through a 200-mesh standard sieve to obtain powder 5A zeolite. Ammonia water: cetyltrimethylammonium bromide (CTMAB): 5A zeolite: ethyl tetrasilicate=9:3:3:5-10 (wt%). Ammonia water (25wt%) was added into 200 ml of deionized water, and ultrasonicated for 15 minutes. Then CTMAB was slowly added to the ammonia solution and sonicated for 15 minutes. Then, the powder 5A zeolite was slowly added into the mixture of ammonia water and CTMAB, and ultrasonically oscillated for 15 minutes. Transfer the zeolite and the mixed solution to a constant temperature magnetic stirrer and stir for 15 minutes. Under the stirring state, add tetraethyl orthosilicate dropwise to the mixed solution. After constant stirring for 2 hours, the mixed solution is filtered, washed, dried, Roasting (at a temperature of 550°C) etc. to obtain a support (ie modified 5A zeolite MZs, the ratio of silica to 5A zeolite is 1:1). Its sp...

Embodiment 3

[0036]The carrier was prepared as described in Example 2. Measure TEA and dissolve it with deionized water; add 1g of MZs to the TEA aqueous solution and oscillate ultrasonically for 15 minutes; then heat and stir at a constant temperature of 70°C until the water in the mixture evaporates to dryness; dry the solid in a blast drying oven at 30°C After 6 hours, a TEA / MZs adsorbent with a weight ratio of 0.2:1 was prepared (ie, the weight ratio of triethanolamine to carrier was 0.2:1).

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Abstract

The invention discloses a sulfur dioxide adsorbent. The sulfur dioxide adsorbent comprises a carrier and triethanolamine loaded on the carrier, wherein the weight ratio of triethanolamine to the carrier is (0.1 to 1)-(2 to 1). The sulfur dioxide adsorbent disclosed by the invention has the beneficial effects that the adsorptive property is good, and the desorption cannot occur easily; in a use process, the use amount of the adsorbent is small, namely a preferable absorption effect can be achieved by virtue of a small number of the adsorbent, the use cost is low, and the application prospect is wide.

Description

technical field [0001] The invention relates to the field of adsorbents, in particular to an adsorbent capable of adsorbing acid gas. The present invention also relates to the preparation method and application of the above-mentioned adsorbent. Background technique [0002] At present, in industrial and living facilities, acidic toxic gases, such as sulfur oxides, hydrogen sulfide, etc., such as sulfur dioxide, are usually produced, which pose a great threat to environmental safety. For example, acidic gases such as sulfur dioxide can cause acid rain. For example, in confined spaces such as indoors and hull compartments, due to the low concentration of acid gases such as SO 2 Gas, will seriously endanger people's health. Therefore, many scientific researchers devote themselves to researching various adsorbents to remove the harmful gas. Porous minerals such as zeolite, halloysite, and montmorillonite are widely used to remove harmful gases due to their cheap price and wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
Inventor 李灿马福秋赵燕军王桂香郭欣付家宽王海斌
Owner UNIT 92609 OF PLA
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