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Columnar activated carbon based on coal pitch binders and preparation method of columnar activated carbon

A technology of coal tar pitch and binder, which is applied in the preparation field of shaped granular activated carbon, which can solve the problems of kneading, no cohesiveness, coal tar pitch powder and carbonaceous materials can not be mixed at high temperature, etc., and achieve the improvement of carbonization yield , water capacity increase, high mechanical strength effect

Inactive Publication Date: 2012-09-19
李钱胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a columnar activated carbon based on coal tar pitch binder, which uses temporary adhesives in the molding process of activated carbon precursors, which not only solves the problem that coal tar pitch has no cohesiveness at general molding temperatures , It also avoids the problem that coal tar pitch powder and carbonaceous materials cannot be mixed and kneaded at high temperature, making the desire of coal tar pitch to replace coal tar as a binder to produce columnar activated carbon a reality

Method used

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  • Columnar activated carbon based on coal pitch binders and preparation method of columnar activated carbon
  • Columnar activated carbon based on coal pitch binders and preparation method of columnar activated carbon
  • Columnar activated carbon based on coal pitch binders and preparation method of columnar activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Take 1.5Kg of polyvinylpyrrolidone, 3Kg of hydroxypropyl methylcellulose, and 1Kg of calcium lignosulfonate and dissolve them in 100Kg of water, stir evenly to make a temporary binder.

[0062] Use AVCM-700 jet mill to grind Taixi anthracite clean coal with moisture <5%, ash <3%, volatile content 10.47%; coal softening point 110℃, moisture <5%, ash <0.3%, coking value 56% of the coal tar pitch is milled separately, and more than 95% of the finished flour is required to pass through a 200-mesh sieve.

[0063] Take 236Kg of the above-mentioned Taixi smokeless cleaned coal powder and 64Kg of coal tar pitch powder, add a total of 300Kg into the kneading pot, mix at room temperature for 12 minutes, add 84Kg of the above-mentioned temporary binder, and knead at 60°C for 20 minutes to make the bonding The agent fully infiltrates and penetrates the mixed powder.

[0064] Choose a 500t hydraulic press, press and stretch at a molding temperature of 25-50°C and a molding pressure...

Embodiment 2

[0067] Take 2Kg of polyvinyl alcohol, 3Kg of carboxymethyl hydroxyethyl cellulose, and 1.5Kg of sodium lignosulfonate dissolved in 100Kg of water, stir evenly to make a temporary binder.

[0068] Taixi anthracite washed clean coal and coal tar pitch are pulverized separately, and more than 95% of the finished powder is required to pass through a 200-mesh sieve.

[0069] Take 237Kg of the above-mentioned Taixi smokeless cleaned coal powder and 63Kg of coal tar pitch powder, add a total of 300Kg to the kneading pot, mix at room temperature for 10 minutes, add 81Kg of the above-mentioned temporary binder, and knead for 15 minutes at 55°C to make the bond The agent fully infiltrates and penetrates the mixed powder.

[0070] Choose a 500t hydraulic press, press and stretch at a molding temperature of 25-50°C and a molding pressure of 16-25Mps to form strip-shaped carbon bars with a diameter of 2.5mm.

[0071] The formed carbon strip has a smooth surface, no cracks, no adhesion, an...

Embodiment 3

[0073] Take 2Kg of carboxymethyl cellulose, 4.5Kg of sodium humate and 1.5Kg of calcium lignosulfonate into 100Kg of water, stir evenly to make a temporary binder.

[0074] Taixi anthracite washed clean coal and coal tar pitch are pulverized separately, and more than 95% of the finished powder is required to pass through a 200-mesh sieve.

[0075] Take 238Kg of the above-mentioned Taixi smokeless cleaned coal powder and 62Kg of coal tar pitch powder, add a total of 300Kg to the kneading pot, mix at room temperature for 10 minutes, add 80Kg of the above-mentioned temporary binder, and knead at 60°C for 15 minutes to make the bonding The agent fully infiltrates and penetrates the mixed powder.

[0076] Choose a 500t hydraulic press, press and stretch at a molding temperature of 25-50°C and a molding pressure of 16-24Mps to form strip-shaped carbon bars with a diameter of 3.8mm.

[0077] The formed carbon strip has a smooth surface, no cracks, no adhesion, and has a certain init...

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Abstract

The invention discloses columnar activated carbon based on coal pitch binders. The columnar activated carbon with grain size range of 1.0-10mm is prepared through a preparation method which comprises the steps of: using 100 parts by weight of carbonaceous materials as basic raw materials and 6-30 parts by weight of coal pitch as binders, respectively pulverizing the carbonaceous materials and the coal pitch, mixing the pulverized carbonaceous materials with the pulverized coal pitch, adding 20-50 parts by weight of temporary binders, kneading, molding, drying, carbonizing in a rotary carbonizing furnace and activating in a Slapple activating furnace. Since the temporary binders are used for endowing the molded materials with primary strength and the coal pitch and the pulverized carbon are co-carbonized and solidified and endow the carbonized materials with final mechanical strength, the traditional long-lasting mode of columnar activated carbon coal tar molding production is broken through and the goal of preparing columnar activated carbon by using coal pitch as binders to replace coal tar is realized.

Description

technical field [0001] The invention relates to an activated carbon, in particular to a shaped granular activated carbon based on coal tar pitch as a binder, and a preparation method of the activated carbon. Background technique [0002] Activated carbon is not only an excellent adsorbent, but also a good catalyst carrier. It has been widely used in various fields such as military chemical protection, environmental protection, chemical industry, food processing, hydrometallurgy, and pharmaceutical refining. Important chemical products indispensable to daily life. And with the continuous advancement of science and technology and the continuous improvement of human living standards and environmental protection awareness, the application fields of activated carbon will be further expanded, and the consumption will increase dramatically year by year. [0003] The industrialized production of activated carbon in my country started in the 1950s and developed rapidly in the late 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/33C01B32/336
Inventor 李钱胜
Owner 李钱胜
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