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Flame-retarding type active carbon and its preparation method

An activated carbon, flame retardant technology, applied in the field of new activated carbon and its preparation, can solve the problems of not well solved, fire danger, affecting use, etc.

Inactive Publication Date: 2004-08-04
NO 63971 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the existing activated carbon has a fire hazard during use, and this problem has not been well solved so far, which has affected its use.

Method used

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  • Flame-retarding type active carbon and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 90 parts of coal-based cylindrical granular activated carbon (weight percentage, the same below), using 10 parts of water-soluble ammonium polyphosphate flame retardant, adding 62 parts of water to the flame retardant to form an ammonium polyphosphate aqueous solution, impregnating the granular activated carbon under constant stirring Then bake it at 150°C for 2 hours to make flame-retardant granular activated carbon, and its properties are shown in Table 1.

Embodiment 2

[0020] 95 parts of fibrous activated carbon (percentage by weight, the same below), using 5 parts of tris (β-chloroethyl) phosphate flame retardant, evenly sprayed on the fibrous activated carbon, and then baked at 120 ° C for 2 hours. into flame-retardant fibrous activated carbon, and its properties are shown in Table 1.

Embodiment 3

[0022] 80 parts of coal-based activated carbon powder (weight percentage, the same below), 10 parts of bentonite, and 10 parts of particulate aluminum hydroxide flame retardant were put into a ball mill for 5 hours, passed through a 180-mesh vibrating screen, and mixed with about 30 parts of water to make a mud cake , and then kneaded, formed by extrusion through a special metal mold to make a cuboid with a size of 50×50×100, with a complete honeycomb structure, and then baked at 200°C for 2 hours to make a flame-retardant Type honeycomb activated carbon, its properties are shown in Table 1.

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Abstract

A flame-retarding activated carbon is prepared from the activated carbon (60-98 wt.%) and flame-retarding agent (2-40 wt%) through spraying flame-retarding agent onto activated carbon and baking at 80-200 deg.C. Its advantages are large specific surface area, high adsorbability and sure flame-retarding performance.

Description

Technical field [0001] The invention relates to a novel activated carbon and a preparation method thereof, which can be used as an adsorbent in chemical industry, environmental protection and other fields. Background technique [0002] Activated carbon has a developed pore structure, excellent adsorption performance and high stability in use. It is an excellent adsorbent. Commonly used activated carbons are cylindrical, spherical, crushed, powdery, honeycomb or fibrous. Applied in many industrial sectors. [0003] In air purification, solvent recovery, etc., the use of activated carbon for adsorption has been widely used and has become a necessary and irreplaceable technology. In most cases, activated carbon adsorbs volatile organic compounds. Due to the presence of a large number of oxygen-containing groups on the surface of activated carbon, Moreover, due to the small thermal conductivity of activated carbon, during the process of adsorption or desorption, the accumulated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20
Inventor 尹维东乔惠贤
Owner NO 63971 TROOPS PLA
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