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Modified coal slag adsorbent and method for preparing same

An adsorbent and modification technology, which is applied in the field of modified coal slag adsorbent and its preparation, can solve the problems of low regeneration utilization rate, high price, secondary pollution, etc., and achieve the effect of low production cost and improved adsorption efficiency

Inactive Publication Date: 2008-10-01
陈宜平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In industrial production or sewage treatment, there are many kinds of adsorbents, some are expensive, some have poor adsorption effect, some have low recycling rate, and some have serious secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0009] The preparation method of the adsorbent: firstly, the waste coal slag is crushed to ≤3mm, then, coal tar, asphalt or water tar oil is added in proportion to the waste coal slag, kneaded for 10-20 minutes, and dried at a temperature below 80-120°C to a water content of 1- 6%, followed by immersion in zinc chloride saturated water at a temperature of 60°C for dehydration; finally, carbonization at a temperature of 300-800°C under air-isolated conditions.

[0010] Wherein, the waste coal slag can also be industrial fly ash or flue ash.

example 1

[0011] Example 1: First, the waste coal slag is crushed ≤ 3mm, then, add 5% coal tar to the waste coal slag and knead for 10 minutes, and dry at 80°C to a water content of 1%, and secondly, soak in zinc chloride saturated water, the temperature Dehydration at 60°C; finally, carbonization at 300°C under air-isolated conditions.

example 2

[0012] Example 2: Firstly, choose fly ash, the particle size is less than or equal to 3mm, then add 7.5% asphalt to the fly ash and knead for 15 minutes, and dry it at 100°C until the water content is 3.5%. Soaking, dehydration at 60°C; finally, carbonization at 550°C under air-isolated conditions.

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PUM

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Abstract

The invention relates to a modified coal slag absorber and relative production. Wherein, said absorber is formed by waste coal slag combined with coal oil, pitch, or tar, while their contents are 90-95% of waste coal slag, and the left are 5-10%. And the production comprises that first breaking coal slag into 3mm, then adding coal oil, pitch, or tar, rolling for 10-20mins, drying at 90-120Deg. C to make water content at 1-6%; emerging it in saturated water of chloride zinc, dewatering at 60Deg. C; carbonizing at 300-800Deg. C, insulated with air. The invention has low cost and improved adsorption efficiency.

Description

technical field [0001] The invention relates to an adsorbent, in particular to a modified coal slag adsorbent and a preparation method thereof. Background technique [0002] In industrial production or sewage treatment, there are many kinds of adsorbents, some are expensive, some have poor adsorption effect, some have low recycling rate, and some have serious secondary pollution. Contents of the invention [0003] The object of the present invention is to provide a modified coal slag adsorbent and its preparation method, which uses industrially produced waste coal slag to produce the adsorbent, recycles waste coal slag, reduces production costs, and improves adsorption efficiency. [0004] The technical solution of the present invention is: the adsorbent is mainly composed of waste coal slag combined with coal tar, asphalt or hydropitch, wherein 90-95% of waste coal slag, 5-10% of coal tar, asphalt or hydropitch. [0005] The preparation method of the adsorbent: firstly, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02
Inventor 陈宜平
Owner 陈宜平