Normal temperature methane high-efficiency adsorption material

An adsorption material and methane technology, which is applied in the field of high-efficiency methane adsorption materials and preparation at room temperature, can solve the problems of difficult molding, high synthesis cost of metal-organic framework materials, and unfavorable large-scale industrial promotion, etc., achieving low cost, conducive to industrial application, and upgrading Effect of Methane Separation Factor

Active Publication Date: 2016-02-10
江苏瑞丰科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its metal-organic framework materials (MOFs) are expensive to synthesize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mill 500g coconut shell activated carbon (iodine value 1700mg / g), 100g Y molecular sieve, 200g attapulgite, 50g kaolin, 10g methyl cellulose to 300-400 mesh, add 800mL water and knead for 0.5-1h, -0.09MPa Vacuum smelting for 3-5 hours, aging for 6-12 hours, extruding in a vertical extruder to obtain honeycomb-shaped activated carbon ceramic rough embryos, airing the rough embryos at room temperature for 24-48 hours, and then irradiating with microwaves at 550 ° C under vacuum to shape (Microwave irradiation density 2.0kw / kg) prepared transition metal-free activated carbon ceramics.

[0020] The compressive strength of the transition metal-free activated carbon ceramic material is >0.9Mpa, methane adsorption capacity (25°C, 36atm) 110V / V, (25°C, 1atm) 15mL / g, CH 4 / N 2 Separation factor 4.2 and CH 4 / CO 2 Separation factor 8.3.

Embodiment 2

[0022] Mill 500g of coconut shell activated carbon (iodine value 1700mg / g), 100g of Y molecular sieve, 200g of attapulgite, 50g of kaolin, 10g of methyl cellulose, and 40g of zinc chloride to 300-400 mesh, add 800mL of water and knead 0.5- 1h, vacuum clay at -0.09MPa for 3~5h, aging for 6~12h, extruded in a vertical extruder to obtain a honeycomb-shaped activated carbon ceramic rough embryo, which is aired at room temperature for 24~48h and then irradiated by microwave Shaped under vacuum at 550℃ (microwave irradiation density 2.0kw / kg) to prepare Zn-containing activated carbon ceramics.

[0023] The Zn-containing activated carbon ceramics have a compressive strength>0.8Mpa, methane adsorption capacity (25°C, 36atm) 130V / V, (25°C, 1atm) 21mL / g, CH 4 / N 2 Separation factor 4.4 and CH 4 / CO 2 The separation factor is 8.7.

Embodiment 3

[0025] Mill coconut shell activated carbon 500g (iodine value 1700mg / g), Y molecular sieve 100g, attapulgite 200g, kaolin 50g, methyl cellulose 10g, zinc chloride 25g ball mill to 300-400 mesh, add 800mL water wet kneading 0.5- 1h, -0.09MPa vacuum mud for 3~5h, aging for 6~12h, extruding in a vertical extruder to obtain a columnar activated carbon ceramic rough embryo. ℃ vacuum setting (microwave irradiation density 2.0kw / kg) prepared Zn-containing activated carbon ceramics.

[0026]Immerse 800g of columnar Zn-containing activated carbon ceramic material into 400mL of ethanol, 400mL of water, and 400mL of DMF mixed solvent, add 40g of triethylamine and 20g of trimesic acid mixture, react at 140°C for 12h, and place the solid-liquid in a bag-type plate centrifuge. Separated, washed with 1000mL ethanol, and dried under microwave vacuum (-0.09MPa, microwave irradiation density 0.8kw / kg)) at 80°C for 0.5h.

[0027] The compressive strength of the Zn-containing activated carbon ce...

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Abstract

The invention relates to a normal temperature methane high-efficiency adsorption material and a preparation method thereof. The material is characterized in that a metal organic skeleton composite material containing transition metals Fe III, Zn II, Cu II, Ni II and Co III grows on an active carbon ceramic mainly prepared from active carbon and molecular sieve in an in situ manner. The preparation method of the normal temperature methane high-efficiency adsorption material comprises the following steps: carrying out dry mixing and ball milling on one or more of chlorides and sulfates of Fe<3+>, Zn<2+>, Cu<2+>, Ni<2+> and Co<3+>, high-specific surface area coconut shell active carbon, Y molecular sieve, attapulgite, kaolin and methyl cellulose in proportion, adding a certain amount of water, carrying out wet mixing, kneading, carrying out vacuum pugging, ageing, carrying out extrusion molding, drying in the shade, carrying out microwave irradiation sizing to obtain an active carbon ceramic molding material containing transition metals, immersing the molding material in a mixed solution containing an organic solvent, an deprotonated alkali and an organic carboxylic acid ligand according to a certain ratio, reacting at 120-180DEG C for 6-24h, carrying out solid-liquid separation, washing, and carrying out microwave vacuum drying to obtain a metal organic skeleton-active carbon ceramic composite material. The material has the characteristics of large specific surface area, developed aperture, high compressive strength, large methane adsorption capacity and high CH4/N2 and CH4/CO2 separation coefficients, and can be widely used in the fields of methane pressure swing adsorption separation and low-concentration methane recovery.

Description

technical field [0001] The invention relates to a high-efficiency methane adsorption material at room temperature and a preparation method thereof. The material is suitable for the fields of methane pressure swing adsorption separation, low-concentration methane recovery, methane enrichment and the like. technical background [0002] Methane is the main component (95%) in gas and is the most common harmful gas in coal mines. The greenhouse effect produced by methane is 21 times that of carbon dioxide, and its density is lower than that of air. It gathers above the coal mine roadway, which can reduce the oxygen content in the air and cause suffocation. When the concentration is 5-16%, it is easy to cause an explosion. my country's coalbed methane reserves are 36.8 trillion cubic meters, which is equivalent to 45 billion tons of standard coal or 35 billion tons of standard oil. The comprehensive development and utilization of coalbed methane has very important social significa...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/047C10L3/10C07C7/12C07C9/04
CPCY02C20/40Y02P20/151
Inventor 杜峰
Owner 江苏瑞丰科技实业有限公司
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