Carbon molecular sieve and preparation method thereof

A carbon molecular sieve and carbonization technology, applied in the field of carbon molecular sieve and its preparation, can solve the problems of difficulty in forming industrialization, pollution discharge and high cost

Inactive Publication Date: 2017-06-30
FUJIAN XINSEN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, the existing problems in the prior art are: in the production process, the process is complicated, the energy consumption is high, the cost is high, and there is pollution discharge in the solidification, coarse crushing, dry distillation, carbonization, deposition and other processes; low, it is difficult to form industrialization; it is difficult to achieve fine regulation of micropore size and pore volume; it is impossible to use discarded mineral water bottles to prepare molecular sieves with high specific surface area

Method used

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  • Carbon molecular sieve and preparation method thereof
  • Carbon molecular sieve and preparation method thereof
  • Carbon molecular sieve and preparation method thereof

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preparation example Construction

[0066] Such as figure 1 As shown, the preparation method of the carbon molecular sieve provided by the embodiments of the present invention comprises the following steps:

[0067] S101: First crush the mineral water bottle to pass through a sieve of 100 mesh to 150 mesh;

[0068] S102: Mix the intercalation agent and the oxidizing agent evenly, then add the crushed mineral water bottle flakes and stir evenly. °C, react for 0.5h-2h, then wash with deionized water until the pH value is 5-6.5, dry at 80°C-90°C for 1 hour-4 hours, and finally in nitrogen or argon atmosphere at 10°C-15 ℃min -1 Raise the temperature to 600°C / 700°C / 800°C / 900°C, and keep the high temperature constant for 0.5h / 1h / 1.5h / 2h / 2.5h to expand;

[0069] S103: The above samples are further finely crushed to a particle size of 2-12 μm, 50% of which are less than 2 μm, and then kneaded by adding binder, bonding aid and water, and then extruded. The mass ratio of the materials during kneading is mineral spring ...

Embodiment 1

[0118] The preparation method of the carbon molecular sieve provided by the embodiment of the present invention comprises the following steps:

[0119] First crush the mineral water bottle to pass through a 100-mesh sieve;

[0120] Mix the intercalation agent and oxidant evenly, then add the crushed mineral water bottle flakes and stir evenly. The mass ratio of the crushed mineral water bottle flakes, intercalant and oxidant is 1:0.05:0.8, and react at a temperature of 60°C for 0.5h~ 2h, then wash with deionized water until the pH value is 5-6.5, dry at 80°C-90°C for 1-4 hours, and finally dry at 10°C-15°C in a nitrogen or argon atmosphere -1 Raise the temperature to 600°C / 700°C / 800°C / 900°C, and keep the high temperature constant for 0.5h / 1h / 1.5h / 2h / 2.5h to expand;

[0121] The above sample is further finely crushed to a particle size of 2 μm, and then kneaded by adding a binder, a binder and water, and then extruded. Auxiliary: water is 1:0.3~0.8:0.02~0.2:0.8~1.0;

[0122]...

Embodiment 2

[0124] The preparation method of the carbon molecular sieve provided by the embodiment of the present invention comprises the following steps:

[0125] First crush the mineral water bottle to pass through a 150-mesh sieve;

[0126] Mix the intercalation agent and the oxidizing agent evenly, then add the crushed mineral water bottle flakes and stir evenly. The mass ratio of the crushed mineral water bottle flakes, intercalation agent and oxidant is 1:0.2:2.5. React for 2 hours at a temperature of 80°C, and then Wash with deionized water until the pH value is 5-6.5, dry at 90°C for 4 hours, and finally dry at 10°C-15°C in a nitrogen or argon atmosphere. -1 Raise the temperature to 600°C / 700°C / 800°C / 900°C, and keep the high temperature constant for 0.5h / 1h / 1.5h / 2h / 2.5h to expand;

[0127] The above samples are further finely crushed to a particle size of 2-12 μm, 50% of which are less than 2 μm, and then kneaded by adding a binder, a bonding aid and water, and then extruded. Shee...

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Abstract

The invention belongs to the technical field of chemical production, and discloses a carbon molecular sieve and a preparation method thereof, the preparation method comprises the following steps: firstly, a mineral water bottle is pulverized and sieved by a 100 mesh to 150 mesh screen; an intercalation agent and an oxidizing agent are mixed evenly and expanded; the sample is further finely crushed, a binder, an adhesive additive and water are added for kneading, extrusion molding is performed, a molded matter is dried, carbonized and activated, and holes are regulated by carbon deposition to obtain the carbon molecular sieve. The preparation method has the advantages of wide source of raw materials, low cost, simple process, saving energy and reducing consumption (energy saving effect is that energy consumption is reduced by more than 50% compared with that of the traditional process), short production cycle, little pollution and high production efficiency, and is an ideal preparation method of the carbon molecular sieve. The preparation method also solves the problem of environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a carbon molecular sieve and a preparation method thereof. Background technique [0002] Carbon molecular sieve (CMS) refers to a microporous carbon material with pores close to the size of the adsorbed molecule and uniform pore size distribution. It is widely used in the fields of adsorption separation, purification and catalysis, and is mainly used as an adsorbent in the pressure swing adsorption (PSA) process. Widely used in small and medium-scale air separation to prepare N2-rich gas. The performance of CMS and its manufacturing cost are largely determined by the raw materials used and the process used. For the industrial production of CMS, the development of new raw materials to reduce production costs will bring huge economic and social benefits. There are a wide range of raw materials used to prepare CMS, ranging from carbon-containing plants or m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
Inventor 林鹏林锴徐沁杰周国军林树林雯怡张蕾
Owner FUJIAN XINSEN CARBON
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