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Method for preparing honeycomb active carbon from coal and coal tar

A technology of honeycomb activated carbon and coal tar, which is applied in peat processing, chemical instruments and methods, petroleum industry, etc. It can solve the problems that coal tar needs to be emulsified, and achieve low content of heavy components, good fluidity, and mechanical high intensity effect

Inactive Publication Date: 2011-01-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method greatly simplifies the preparation process of honeycomb carbon, but still requires high and low temperature binders, and coal tar needs to be emulsified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Grind the Taixi anthracite to less than 154 μm, put it into the kneader according to the mass ratio of coal powder: asphalt content of 25% coal tar = 400:150, and stir evenly to make plastic slime, which is kneaded by a vacuum extrusion molding machine. After the mud is treated and aged, it is added to a vacuum extrusion molding machine equipped with a honeycomb mold, and molded at a molding pressure of 16Mpa to obtain a wet honeycomb body. The wet honeycomb was dried in a microwave oven until free of tar vapor and water vapor escaped. Using nitrogen as a protective gas, heat up to 700°C at a heating rate of 3°C / min for carbonization for 1 hour; then raise the temperature to 850°C at a heating rate of 5°C / min, and activate with water vapor as an activation medium for 1 hour to obtain honeycomb activated carbon. The performance index of honeycomb activated carbon is shown in Table 1.

Embodiment 2

[0024] The basic steps are the same as in Example 1. The pitch content in the coal tar is 32%, the carbonization time is 2 hours, the activation temperature is 800° C., and the activation time is 3 hours. The performance indicators of the obtained honeycomb activated carbon are shown in Table 1.

Embodiment 3

[0026] Except that the pulverized coal is Yangquan anthracite, the mass ratio pulverized coal: pitch content is 25% coal tar=400:200, and the molding pressure is 14Mpa, repeat the method of example 1. The performance indicators of honeycomb activated carbon are shown in Table 1.

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PUM

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Abstract

The invention provides a method for preparing honeycomb-like activated carbon by using coal and coal tar, which takes coal dust and the coal tar as raw materials to prepare the honeycomb-like activated carbon by grinding the coal dust, charge mixture, vacuum pugging, seal aging, vacuum extruding and moilding, drying, carbonization and activation. The method for preparing the honeycomb-like activated carbon only takes the coal tar as cementing agent, so as to overcome the defect that multiple cementing agents are needed to be applied in the technique, thus having the characteristics of simple raw materials, low production cost and easy industrialization. The produced honeycomb-like activated carbon has the characteristics of large geometric area and specific surface area, high mechanical strength and the like, and can be applied for the treatment of waste gas and waste water and catalyst carrier.

Description

technical field [0001] The invention relates to a simple method for preparing honeycomb-shaped activated carbon from coal and coal tar, specifically a preparation method using coal tar as a low-temperature and high-temperature binder. Background technique [0002] Honeycomb activated carbon is a new type of activated carbon. It not only has the original advantages of activated carbon (developed pores, large specific surface area), but also has small bed resistance, large geometric surface area, and short gas diffusion path due to its unique honeycomb structure. Strong dust resistance and other advantages. Based on the above advantages, honeycomb activated carbon can be used in wastewater treatment, gas purification and storage, catalyst carrier, etc., and its preparation and application have attracted extensive attention of researchers at home and abroad. [0003] The currently reported honeycomb activated carbon preparation technologies mainly include carbon coating method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/10C10F7/00C01B32/336
Inventor 刘振宇刘树青刘清雅
Owner BEIJING UNIV OF CHEM TECH
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