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Carbon adsorbent special for methane in pressure swing adsorption and preparation method for carbon adsorbent

A pressure swing adsorption, carbon adsorbent technology, applied in separation methods, adsorption purification/separation, chemical instruments and methods, etc., can solve the problems of unsuccessful separation of adsorbents, etc. The effect of fast adsorption and desorption

Inactive Publication Date: 2012-02-29
淮北市森化碳吸附剂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption capacity of the product adsorbent launched in the United States in the past two years has reached CH 4 more than 25.0mL / g, CO is less than 2.0mL / g, while my country's CH 4 The development of adsorbents for gas separation has not been successful

Method used

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  • Carbon adsorbent special for methane in pressure swing adsorption and preparation method for carbon adsorbent
  • Carbon adsorbent special for methane in pressure swing adsorption and preparation method for carbon adsorbent
  • Carbon adsorbent special for methane in pressure swing adsorption and preparation method for carbon adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] CH in pressure swing adsorption in this example 4 The raw materials of the special carbon adsorbent consist of:

[0038] 100 parts of pulverized coal with ash content <5%, 35 parts of high-temperature coal tar, 3 parts of potassium hydroxide, 2 parts of potassium nitrate, 3 parts of calcium carbonate, 2 parts of magnesium chloride, and 10 parts of water.

[0039] CH in pressure swing adsorption in this example 4 The special carbon adsorbent is prepared according to the following steps:

[0040] Precursor preparation: Pulverize coal powder with ash content <5% with a 4R Raymond mill until the particle size is greater than 200 mesh to obtain coal powder, and add high-temperature coal tar, potassium hydroxide, and potassium nitrate to the coal powder , calcium carbonate, magnesium chloride and water, stirred evenly, extruded with a 315-ton press, left to stand for 2 days, and then carbonized at 500°C for 3 hours to obtain the precursor;

[0041] Preparation of the adsor...

Embodiment 2

[0043] CH in pressure swing adsorption in this example 4 The raw materials of the special carbon adsorbent consist of:

[0044] 100 parts of pulverized coal with ash content <5%, 45 parts of high-temperature coal tar, 8 parts of potassium hydroxide, 6 parts of potassium nitrate, 8 parts of calcium carbonate, 6 parts of magnesium chloride, and 20 parts of water.

[0045] CH in pressure swing adsorption in this example 4 The special carbon adsorbent is prepared according to the following steps:

[0046] Precursor preparation: Pulverize coal powder with ash content <5% with a 4R Raymond mill until the particle size is greater than 200 mesh to obtain coal powder, and add high-temperature coal tar, potassium hydroxide, and potassium nitrate to the coal powder , calcium carbonate, magnesium chloride and water, stirred evenly, extruded with a 315-ton press, left to stand for 3 days, and then carbonized at 700°C for 2 hours to obtain the precursor;

[0047] Preparation of adsorbent...

Embodiment 3

[0049] CH in pressure swing adsorption in this example 4 The raw materials of the special carbon adsorbent consist of:

[0050] 100 parts of pulverized coal with ash content <5%, 40 parts of high-temperature coal tar, 5 parts of potassium hydroxide, 4 parts of potassium nitrate, 5 parts of calcium carbonate, 4 parts of magnesium chloride, and 15 parts of water.

[0051] CH in pressure swing adsorption in this example 4 The special carbon adsorbent is prepared according to the following steps:

[0052] Precursor preparation: Pulverize coal powder with ash content <5% with a 4R Raymond mill until the particle size is greater than 200 mesh to obtain coal powder, and add high-temperature coal tar, potassium hydroxide, and potassium nitrate to the coal powder , calcium carbonate, magnesium chloride and water, stirred evenly, extruded with a 315-ton press, left to stand for 2 days, and then carbonized at 600°C for 2 hours to obtain the precursor;

[0053] Preparation of adsorbent...

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Abstract

The invention discloses a carbon adsorbent special for methane in pressure swing adsorption and a preparation method for the carbon adsorbent. The carbon adsorbent with the iodine value of 900-1,000mg / g and the methylene blue value of 100-150mg / g is prepared from the following raw materials in part by mass: 100 parts of pulverized coal, 35 to 45 parts of coal tar, 3 to 8 parts of potassium hydroxide, 2 to 6 parts of potassium nitrate, 3 to 8 parts of calcium carbonate, 2 to 6 parts of magnesium chloride and 10 to 20 parts of water through pressing, carbonization and activation. The carbon adsorbent special for methane in pressure swing adsorption has high strength of over 95 percent, concentrated micropores with large pore volume, quick adsorption and desorption, the CH4 adsorption capacity of 25.0mL / g, and the CO adsorption capacity of 2.0mL / g, and can completely meet the requirement of the current domestic industrial application.

Description

1. Technical field [0001] The invention relates to an adsorbent and a preparation method thereof, in particular to a special carbon adsorbent for methane in pressure swing adsorption and a preparation method thereof. 2. Background technology [0002] In modern industry, N 2 , methane (CH 4 )CH 4 And CO are important basic chemical raw materials. N 2 It has already been widely used in chemical industry, electronics, metallurgy, food, machinery and other fields. The demand for nitrogen in modern industry is increasing at a rate of more than 10% every year; CH 4 In addition to being used as a synthetic raw material, it is currently used more as an energy source, and CO is an important raw material for oxo synthesis of organic chemicals, and can also produce a variety of organic chemicals, such as formic acid, oxalic acid, acetic acid, propionic acid and acrylate, carboxylate Acid ester, dimethylformamide DMF, diisocyanate TDL, etc. In the industrial production process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/047C07C7/12C07C9/04
Inventor 李森
Owner 淮北市森化碳吸附剂有限责任公司
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