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Gas purification adsorbent as well as preparation method and application thereof

An adsorbent and gas technology, applied in combustible gas purification, chemical instruments and methods, combustible gas purification/transformation, etc., can solve the problems of reducing device operation difficulty and cost, device operation difficulty and high cost, and complex filling process

Pending Publication Date: 2022-08-09
上海圣升化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of cumbersome production of adsorbents, complex filling process, difficulty and high cost of device operation brought about by the use of various molecular sieve adsorbents in the existing gas secondary purification technology, according to the embodiments of the present invention, it is hoped to provide a new type of gas purification Adsorbent, which is used as a single adsorbent, can remove sulfide, aromatics, tar, ammonia and other impurities in the gas at one time, which not only simplifies the process of adsorbent generation and loading, but also reduces the difficulty of device operation and cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix 10 g of ZSM-11 / Beta molecular sieve with a molar ratio of silicon to aluminum atoms of 200 and 9.8 g of pseudo-boehmite. The temperature was raised to 500° C. in a heating furnace and calcined for 1 hour to obtain elongated adsorbent particles. Then the obtained shaped unmodified adsorbent particles were excessively dipped in a certain concentration of magnesium nitrate solution for 12 hours, and the loading amount of magnesium oxide was determined to be 1wt% of the total weight of the adsorbent according to the water absorption of the unmodified adsorbent and the concentration of the solution, The impregnated samples were dried at 120°C for 6 hours, and then heated to 500°C for 1 hour in a microwave oven to obtain a magnesia-modified ZSM-11 / Beta adsorbent.

[0015] 5g of the above-mentioned magnesia-modified ZSM-11 / Beta adsorbent was loaded into the micro-adsorption evaluation device, and the pre-prepared coke oven gas raw material after rough desulfurization treat...

Embodiment 2

[0017] Take 8 g of SAPO-11 / ZSM-22 molecular sieve with a molar ratio of silicon to aluminum atoms of 2 and 1.5 g of silica binder to form a rolling ball. After drying at room temperature, the temperature is raised to 500 ℃ in a microwave oven for calcination for 1 hours, spherical adsorbent particles were obtained. Then, the obtained shaped unmodified adsorbent particles were immersed in excess of a certain concentration of cobalt nitrate and ammonium dihydrogen phosphate solution for 12 hours, respectively, and the cobalt oxide and phosphorus pentoxide were determined by the water absorption of the unmodified adsorbent and the concentration of the solution. The loadings were 2.0 wt % and 3.0 wt % of the total weight of the adsorbent, respectively. The impregnated samples were dried at 120 °C for 6 hours, and then heated to 500 °C in a microwave oven for 1 hour and calcined to obtain cobalt oxide and pentagonal Phosphorus oxide modified SAPO-11 / ZSM-22 adsorbent.

[0018] 5g o...

Embodiment 3

[0020] Take 5 g of EU-1 / MOR molecular sieve with a molar ratio of silicon to aluminum atoms of 30, 4.5 g of EU-1 / ZSM-5 molecular sieve with a molar ratio of silicon to aluminum atoms of 19990, 0.1 g of silica binder and 0.1 g of pseudo-thin water Bauxite, mixed evenly, dripped with an appropriate amount of dilute nitric acid to bond, dried at room temperature, heated to 500°C in a microwave oven for 1 hour, and formed into cylindrical adsorbent particles. Then, the obtained shaped unmodified adsorbent particles were successively immersed in a certain concentration of lanthanum nitrate, boric acid and palladium chloride solution for 12 hours in excess, and the lanthanum oxide, dioxygen trioxide were determined by the water absorption amount and solution concentration of the unmodified adsorbent. The loadings of boron and palladium oxide were 1.0 wt %, 1.9 wt % and 0.1 wt % of the total weight of the adsorbent, respectively. The impregnated samples were dried at 120 °C for 6 hour...

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PUM

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Abstract

The invention discloses a gas purification adsorbent, which is composed of the following components in percentage by weight: 50 to 95 wt% of mixed crystal molecular sieve, 1 to 49 wt% of binder, and 1 to 49 wt% of performance additive. In addition, the invention also relates to a preparation method of the coal gas purification adsorbent and the coal gas purification adsorbent as a single adsorbent for filling use, and the coal gas purification adsorbent can simultaneously remove impurities such as sulfide, aromatic hydrocarbon, tar and ammonia in coal gas at one time.

Description

technical field [0001] The present invention relates to a gas purification adsorbent and a preparation method thereof. In addition, the present invention also relates to the above-mentioned gas purification adsorbent being used as a single adsorbent for filling, which can simultaneously remove sulfides, aromatic hydrocarbons, tars, Ammonia and other impurities. Background technique [0002] Coke oven gas is a combustible gas containing hydrocarbons, methane and hydrogen produced by high-temperature dry distillation of coal in the coking production process. It has the characteristics of many combustible components and high calorific value. However, the gas-fired power generation system with higher thermal efficiency has high requirements on the purity of the gas, and the gas that has undergone rough desulfurization and rough debenzene is far from meeting the requirements for use, so it must undergo secondary purification before being used for combustion power generation. On ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/28B01J20/30C10K1/00C10K1/32
CPCB01J20/18B01J20/2803B01J20/06B01J20/041C10K1/32C10K1/002C10K1/004
Inventor 黄恒波李军辉张婧杨勇
Owner 上海圣升化工科技有限公司
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