Process for producing pressed active carbon

A technology of forming activated carbon and technical performance, which is applied in the field of preparation of forming activated carbon, can solve the problem of high manufacturing cost, and achieve the effect of reducing manufacturing cost and improving comprehensive utilization level.

Inactive Publication Date: 2009-04-08
李贵义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Chinese patent 02160182.8, its

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] A preparation method of shaped activated carbon, which includes the following steps:

[0028] a. Crush the raw coal into coal pieces less than 10 mm;

[0029] b. Remove gangue from raw coal;

[0030] c. Drying and dehydration make the water content of the raw coal reach 4-5%;

[0031] d. Choose a kind of 37% weakly caking coal with well-developed pores and sub-micropores, a kind of 41% non-stick coal with well-developed pores and mesopores, and a kind of coal with well-developed micropores and pores, but 41% 22% of fat coal with poor mechanical strength, through pulverization, the pass rate of powder with less than 200 mesh is greater than 85%;

[0032] e. The powder is pressed into a shape on the granulator, the strength is greater than 87%;

[0033] f. Forming carbonization; g. Forming carbonization material activation.

[0034] The performance of the formed activated carbon

[0035] Ash content% is less than 6.1

[0036] Strength% is greater than 97

...

Example Embodiment

[0045] Example 2

[0046] A preparation method of shaped activated carbon, which includes the following steps:

[0047] a. Crush the raw coal into coal pieces less than 10 mm;

[0048] b. Remove gangue from raw coal;

[0049] c. Drying and dehydration make the water content of the raw coal reach 4-5%;

[0050] d. Choose a weakly caking coal with 64% micropores and well-developed submicropores, a non-stick coal with 25% micropores and well-developed mesopores, and a kind of non-stick coal with developed micropores and mesopores of 25%. 11% of fat coal with poor mechanical strength, through pulverization, the pass rate of powder with less than 200 mesh is greater than 85%;

[0051] e. The powder is pressed into a shape on the granulator, the strength is greater than 87%;

[0052] f. Forming carbonization; g. Forming carbonization material activation.

[0053] The performance of the formed activated carbon

[0054] Ash content% less than 6.0

[0055] Strength% is greater than 97

[0...

Example Embodiment

[0064] Example 3

[0065] A preparation method of shaped activated carbon, which includes the following steps:

[0066] a. Crush the raw coal into coal pieces less than 10 mm;

[0067] b. Remove gangue from raw coal;

[0068] c. Drying and dehydration make the water content of the raw coal reach 4-5%;

[0069] d. Choose a 50% weakly caking coal that can produce fine micropores and developed sub-micropores, a non-cohesive coal that can produce 33% fine and mesopores, and a type that can produce micropores and well-developed mesopores. 17% of fat coal with poor mechanical strength, through pulverization, the pass rate of powder with less than 200 mesh is greater than 85%;

[0070] e. The powder is pressed into a shape on the granulator, the strength is greater than 87%;

[0071] f. Forming carbonization; g. Forming carbonization material activation;

[0072] The properties of the formed activated carbon:

[0073] Ash %, less than 6.23,

[0074] Strength %, greater than 97,

[0075] ...

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Abstract

The invention relates to a method for preparing a molded active carbon. The method comprises the following steps: a. crude coal is broken up to coal blocks of less than 10 millimeters; b. attal is removed from the crude coal; c. the crude coal is dried and dehydrated in order that the water content of the crude coal reaches between 4 and 5 percent; d. 37 to 64 percent of weak caking coal which can be used for producing developed fine micropores and secondary micropores, 25 to 41 percent of non-caking coal which can be used for manufacturing developed fine middle pores and 11 to 22 percent of rich coal which can be used for producing developed micropores and middle pores with poor mechanical strength are selected; and a powdery material with less than 200 meshes has the passing rate of more than 85 percent through pulverization; e. the powdery material is pressed and molded through a pelletizer; and the strength of the powdery material is more than 87 percent; f. molded carbon is carbonized; and g. the molded and carbonized material is activated. Before molding, the method does not select tar or other additives and only selects the weak caking coal, the non-caking coal and the rich coal which are easy to obtain locally, thereby greatly reducing production cost and improving the comprehensive utilization rate of coal of the state.

Description

technical field [0001] The invention belongs to a method for directly using coal to prepare activated carbon, in particular to a method for preparing shaped activated carbon. Background technique [0002] Activated carbon is a very important industrial product with a wide range of uses. At present, the production methods of activated carbon mainly include physical activation method and chemical activation method. The chemical activation method pollutes the environment seriously, so it is rarely used now. The physical activation method is to carbonize carbon-containing materials under normal pressure conditions, then use water vapor as an activator, and activate chemical reactions between water vapor and carbon under normal pressure conditions of 700-1000 ° C to produce activated carbon. Before molding and granulating, coal powder, tar and water are mostly selected and added to the mixer to stir evenly to make coal paste, and then go to shape. Such as Chinese patent 021601...

Claims

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Application Information

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IPC IPC(8): C01B31/08
Inventor 常玉清康跃福李贵义宋国强张达贺守印李磊李慧刘艮石慧赵义春
Owner 李贵义
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