Solid adsorbent for removing H2S, CO2, and organic sulfur from mixed gas

A solid adsorbent, CO2 technology, applied in chemical instruments and methods, waste fuel, other chemical processes, etc., can solve the problems of unsuitable treatment, insufficient adsorption capacity and selectivity of adsorbent, single function, etc., and achieve adsorption speed Fast, low regeneration energy consumption, large adsorption capacity effect

Inactive Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current industrial application is concerned, porous media can remove various components by physical adsorption at room temperature, but as the adsorption temperature increases, the adsorption capacity decreases, and at the same time, the adsorptio...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Methanol is used as a dispersant, the porous solid carrier is amorphous silica gel Q-10, the load is 12.5% ​​of Q-10, and the proportions of main agent PAMAM and auxiliary agent in the load are 75% and 25% respectively. The auxiliary agent is composed of AMP and PZ, wherein both AMP and PZ are 50%. The solid adsorbent thus prepared was labeled SS-1.

[0018] Methanol is used as the dispersant, the porous solid carrier is amorphous silica gel Q-10, the load is 40% of Q-10, and the proportions of the main agent PAMAM and the auxiliary agent in the load are 55% and 45% respectively. The auxiliary agent is composed of DEA and DIPA, wherein DEA and DIPA are 40% and 60% respectively. The solid adsorbent thus prepared was designated SS-2.

[0019] Methanol is used as a dispersant, the porous solid carrier is amorphous silica gel Q-10, the load is 75% of Q-10, and the proportions of main agent PAMAM and auxiliary agent in the load are 35% and 65% respectively. The additives ...

Embodiment 2

[0025] Mixed gas gauge pressure is 15kPa, CO 2 The content is 4.0%, the rest is N 2 . The adsorption temperature is 40°C, the mixed gas is saturated at the adsorption temperature in a water bath, and then passes through the adsorption column filled with solid adsorbent SS-1, CO 2 The adsorption capacity is 4.72mmol / g, and the CO in the purified gas 2 ≦0.2%.

Embodiment 3

[0027] The gauge pressure of the mixed gas is 0.3MPa, H 2 S, CO 2 , COS content are 0.5%, 4.0% and 109ppmv respectively, the rest is N 2 . The adsorption temperature is 50°C, the mixed gas is saturated at the adsorption temperature in a water bath, and then passes through the adsorption column filled with solid adsorbent SS-2 to purify the H in the gas. 2 S≦4ppmv, CO 2 ≦1%, COS≦15ppmv.

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PUM

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Abstract

The invention belongs to the technical fields of gas purification and environment protection, and specifically relates to a solid adsorbent for removing H2S, CO2, CS2, COS, organic sulfur (mercaptan, etc.), and the like from mixed gas. The solid adsorbent is composed of a porous solid carrier and a loaded object. The porous solid carrier comprises active carbon, molecular sieve, silica gel, alumina, hydrotalcite, derivatives of hydrotalcite, and metal organic framework compounds (MOFs). The loaded object is composed of a main agent and an auxiliary agent. The loaded object accounts for 10 to 75 wt% of the weight of the porous solid carrier. The main agent accounts for 30 to 80% of the weight of the loaded object. The provided solid adsorbent is used to remove sulfur and carbon, can be used in reactors such as fixed bed reactor, moving bed reactor, and the like, can be used at a low temperature, and has the characteristics of adjustable selectivity, quick adsorption speed, large adsorption capacity, high removing rate of COS, CS2, and organic sulfur (mercaptan, etc.), and low energy consumption of regeneration.

Description

technical field [0001] The invention belongs to the technical field of gas purification and environmental protection, and specifically relates to a method for removing H from gas mixtures. 2 S, CO 2 and CS 2 , COS, mercaptan and other organic sulfur solid adsorbents. Background technique [0002] There are many occasions in industry that need to remove H from the gas mixture 2 S, CO 2 , COS, CS 2 One or more of acidic impurities such as mercaptans, such as natural gas, refinery catalytic dry gas, coking dry gas, coal bed methane, biogas, landfill gas, and gasification of coal, naphtha, heavy oil, biomass, etc. Synthetic gas produced, etc. for H 2 S, CO 2 There are a variety of mature process methods for the separation of carbon dioxide, such as chemical absorption, physical absorption, adsorption and so on. Chemical absorption methods often use monoethanolamine (MEA), diethanolamine (DEA), N-methyldiethanolamine (MDEA), diglycolamine (DGA), 2-amino-2-methyl-1-propan...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C20/40Y02E50/30
Inventor 毛松柏周志斌朱道平
Owner CHINA PETROLEUM & CHEM CORP
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