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Preparation method of ultramicroporous active carbon balls used for absorbing coalbed methane

A technology of activated carbon balls and ultra-micropores, which is used in chemical instruments and methods, gas fuels, inorganic chemistry, etc., can solve the problems of large pore size distribution and poor separation effect, achieve uniform pore size distribution, improve adsorption and separation effects, environmental protection friendly effect

Active Publication Date: 2019-11-01
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the traditional activated carbon adsorbent has the disadvantage that the large pore size distribution leads to poor separation effect, so it is necessary to prepare activated carbon adsorbent with uniform pore size.

Method used

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  • Preparation method of ultramicroporous active carbon balls used for absorbing coalbed methane
  • Preparation method of ultramicroporous active carbon balls used for absorbing coalbed methane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: a kind of preparation method of the ultramicroporous activated carbon sphere of adsorption coalbed methane, the steps are as follows:

[0030] (1) Glucose is dissolved in deionized water, and the pH value of the solution is adjusted to 12 to obtain product A;

[0031] (2) Heat product A at 190°C for 5 hours and cool to room temperature to obtain product B;

[0032] (3) Separate product B, take the solid matter, wash repeatedly with distilled water and ethanol 4 times, and dry in an oven at 80°C for 12 hours to obtain product C;

[0033] (4) Heat product C to 700°C at a heating rate of 15K / min under nitrogen atmosphere (300ml / min), and roast for 1 hour to obtain product D;

[0034] (5) Wash product D twice with distilled water and ethanol, and dry in an oven at 80°C for 10-20 hours to obtain ultra-microporous activated carbon spheres.

Embodiment 2

[0035] Embodiment 2: a kind of preparation method of the ultramicroporous activated carbon sphere of adsorption coalbed methane, the steps are as follows:

[0036] (1) Glucose is dissolved in deionized water, and the pH value of the solution is adjusted to 11 to obtain product A;

[0037] (2) Heat product A at 170°C for 4 hours and cool to room temperature to obtain product B;

[0038] (3) Separate the product B, take the solid matter, wash it repeatedly with distilled water and ethanol for 3 times, and dry it in an oven at 70°C for 10 hours to obtain the product C;

[0039] (4) Heat product C to 700°C at a heating rate of 15K / min under a nitrogen atmosphere (300ml / min), and roast for 0.5 hours to obtain product D;

[0040] (5) Wash product D once with distilled water and ethanol, and dry it in an oven at 70°C for 10 hours to obtain ultra-microporous activated carbon spheres.

Embodiment 3

[0041] Embodiment 3: a kind of preparation method of the ultramicroporous activated carbon sphere of adsorption coalbed methane, the steps are as follows:

[0042] (1) Dissolving glucose in deionized water, adjusting the pH value of the solution to 13, to obtain product A;

[0043] (2) heat product A at 200°C for 6 hours, and cool to room temperature to obtain product B;

[0044] (3) Separate the product B, take the solid matter, wash it repeatedly with distilled water and ethanol for 5 times, and dry it in an oven at 90°C for 20 hours to obtain the product C;

[0045] (4) Heat product C to 700°C at a heating rate of 15K / min under a nitrogen atmosphere (300ml / min), and roast for 1.5 hours to obtain product D;

[0046] (5) Wash product D three times with distilled water and ethanol, and dry in an oven at 90°C for 20 hours to obtain ultra-microporous activated carbon spheres.

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Abstract

The invention discloses a preparation method of ultramicroporous active carbon balls used for absorbing coalbed methane. The preparation method comprises following steps: 1, glucose is dissolved in deionized water, solution pH value is adjusted to 11 to 13 so as to obtain a component A; 2, the component A is subjected to hydro-thermal thermal-insulation treatment for 4 to 6h at 170 to 200 DEG C, and is cooled to room temperature to obtain a component B; 3, the component B is separated, a solid substance is collected, is washed with distilled water and ethanol repeatedly for 3 to 5 times, is introduced into a drying oven for 10 to 20h of drying at 70 to 90 DEG C so as to obtain a component C; 4, the component C is heated to 700 DEG C in nitrogen atmosphere, and is subjected to roasting for0.5 to 1.5h so as to obtain a component D; and 5, the component D is washed with distilled water and ethanol for 1 to 3 times, and is introduced into a drying oven for 10 to 20h of drying at 70 to 90DEG C so as to obtain the ultramicroporous active carbon balls. The prepared ultramicroporous active carbon balls possess following characteristics: pore diameter distribution is uniform, adsorption separation effect is excellent, the pore diameter is adjustable, and the preparation process is friendly to the environment.

Description

technical field [0001] The invention relates to a method for preparing ultramicroporous activated carbon spheres, in particular to a method for preparing ultramicroporous activated carbon spheres that adsorb coalbed methane Background technique [0002] At present, the separation and enrichment of CBM methane mainly include cryogenic separation, membrane separation, hydrate separation, adsorption separation, etc. Compared with these methods, the adsorption separation method is simple due to its simple process, The advantages of low energy consumption and low investment have attracted more attention, but the adsorption separation method has higher requirements for the separation and adsorption performance of the adsorbent. [0003] At present, common adsorbents include zeolite molecular sieves, metal organic frameworks, activated carbon materials, etc. These materials have their own advantages in the separation and enrichment of coalbed methane methane. Good performance, lar...

Claims

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Application Information

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IPC IPC(8): C01B32/318B01J20/20C10L3/10
CPCC01B32/318B01J20/20C10L3/10B01J2220/4812
Inventor 潘红艳林倩曹建新刘福鑫张国翔
Owner GUIZHOU UNIV