Preparation method of iron carrying active carbon dearsenic adsorber

A technology of iron-loaded activated carbon and adsorbent, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as attenuation, limit long-term operation, etc., achieve low cost, low preparation cost, and easy operation convenient effect

Inactive Publication Date: 2006-08-30
SHANGHAI MUNICIPAL WATER RESOURCES DEV & UTILIZATION NAT ENG CENT
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Problems solved by technology

Chinese invention patent application "composite adsorption material for removing arsenic in water and its preparation method" application number is 2005100278982. The adsorption material provided has a relatively obvious arsenic removal effect. However, as the adsorption time prolongs, the iron oxide on the surface will attenuate. limits the long run of this material

Method used

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  • Preparation method of iron carrying active carbon dearsenic adsorber
  • Preparation method of iron carrying active carbon dearsenic adsorber
  • Preparation method of iron carrying active carbon dearsenic adsorber

Examples

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Embodiment 1

[0028] The first step: the coal quality indicators used in the present invention are: total water ≤ 14%, analytical water ≤ 3%, ash content of about 20%, volatile matter of about 18%, sulfur content of ≤ 5%, and calorific value of more than 3500 cal / g.

[0029] The second step: use the coal selected by the Raymond mill produced by Henan Hongxing Mining Machinery Factory to grind it into powder with a particle size of 80-125 mesh.

[0030] Step 3: Weigh raw coal powder: iron oxide: binder = 12:3:1 by mass. The binder is commercially available asphalt, and the iron oxide is a commercially available industrial grade product.

[0031] Step 4: Mix raw coal powder and iron oxide evenly. Add the binder (liquid pitch or tar) that will filter out the garbage after hot melting, stir evenly, and make a cylindrical shape of 2 × 3.5-4 mm on the forming machine, and dry it at 100°C for use.

[0032] The fifth step: pyrolyze the product of the fourth step in a carbonization furnace with an...

Embodiment 2

[0040] Except for the third step: weighing raw coal powder: iron oxide: binder = 9:1:0.4 parts by mass, the rest of the steps are the same as in Example 1.

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Abstract

The present invention relates to a preparation method of iron-carrying active carbon arsenium-removing adsorbing agent. It is made up by using active carbon and iron oxide through a compounding process. Said process includes the following steps: weighing Chinese Datong raw coal, iron oxide and adhesive according to the mixing ratio of 12-9:3-1:1-0.4, grinding raw coal into coal powder, mixing the coal powder with iron oxide, adding adhesive, forming, charring under the condition of that anoxybiotic temperature is 300-500deg.C and making activation at 850-950deg.C so as to obtain the invented arsenium-removing adsorbing agent.

Description

technical field [0001] The invention relates to a preparation method of an arsenic-removing adsorption material, in particular to a production process of a novel adsorption material capable of effectively removing arsenic in water or atmospheric flue gas. Background technique [0002] The U.S. Environmental Protection Agency has declared arsenic an endocrine disruptor. Arsenic and its soluble compounds are extremely toxic. Such as arsenic and white arsenic are arsenic trioxide. In nature, it mainly exists in the form of compounds, sometimes as simple substances, such as arsenite (FeAsS), realgar (As 2 S 2 ), orpiment (As 2 S,). Many non-ferrous metal ores contain arsenic, so in the process of smelting non-ferrous metals, such as ore burning, there are arsenic compounds (such as white arsenic) and the arsenic compounds are mostly used to make hard alloys (such as adding 35% arsenic to lead bullets). arsenic), arsenate drugs, insecticides, rode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 张巧丽高乃云乐林生徐斌戴婕陈明吉
Owner SHANGHAI MUNICIPAL WATER RESOURCES DEV & UTILIZATION NAT ENG CENT
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