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Immesion active carbon and its preparation method

A technology of activated carbon and impregnated carbon, which is applied in the field of air purification, can solve the problems that the removal ability is not introduced, the purification effect is not involved, and the comprehensive performance is not ideal, so as to achieve the effect of good adsorption performance

Inactive Publication Date: 2006-09-13
NO 63971 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the usual impregnated activated carbon is only used to purify one or one type of several gases. If it protects or purifies a variety of toxic and harmful gases, its comprehensive performance is not ideal. It is necessary to choose different impregnated carbon for different purification gas objects. Activated carbon to prime the filter
[0003] Chinese patent ZL99100358.6 discloses a kind of activated carbon as carrier, iodate as active component, and alkali metal oxide as additive, which can be used for SO 2 , NO 2 purification, but this impregnated carbon does not involve the H 2 S, O 3 and purification of VOCs
The deodorant used is made of copper oxide, manganese oxide and silver nitrate on a carrier with activated carbon as the main component to remove H 2 S, mercaptans, ammonia and organic amines have excellent properties, but for SO 2 , NO 2 , O 3 And the removal ability of VOCs is not introduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Dissolve 2.9kg of copper shavings or silk with ammonia water and pass through carbon dioxide gas to form a copper-ammonia solution. The content of Cu in the solution is 7-12%, and then dissolve 3.2kg of potassium hydroxide and 1.6kg of potassium iodide in water. Mix it with copper-ammonia solution to make an impregnating solution, immediately impregnate 25kg of columnar activated carbon according to the solution volume of 70-90% of the water capacity of the activated carbon carrier, place it for 0.5-4 hours, and divide it at 130°C, 140°C, and 160°C step drying and activation for 4 hours to make impregnated activated carbon T-1.

example 2

[0021] Be mixed with example 1 copper-ammonia solution, 1.8kg potassium hydroxide and 1kg sodium hydroxide and 1.6kg potassium iodate are dissolved in water, then make impregnating liquid according to the condition of example 1 and impregnate on the base carbon, then carry out The temperature was programmed to raise the temperature step by step to dry and activate for 4.5 hours to make impregnated activated carbon T-2.

example 3

[0023] Dissolve 3.5kg of basic copper carbonate, add the same amount of ammonium carbonate, 3 to 5 times of water and excess ammonia water to prepare a copper-ammonia solution, mix 1.8kg of potassium hydroxide, 1.2kg of sodium carbonate and 1.8kg of Dissolve potassium iodide, prepare impregnation solution after heating, then impregnate 25kg activated carbon according to the solution volume of 70-95% of the water capacity of the activated carbon carrier, place it for 0.5-6 hours, and then bake it step by step at 130°C, 140°C, and 160°C Dry and activate for 5 hours to make impregnated activated carbon T-3.

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Abstract

An impregnated activated carbon for removing the harmful gases including H2S, SO2, NO2, O3, organic ammonia and VOCs is prepared through preparing the impregnating solution from Cu, K, Na, I and OH ions, proportionally impregnating the activated carbon in it, drying in the O2 content controllable air flow at 130-180 deg.C, and activating.

Description

technical field [0001] The invention is an impregnated activated carbon and a preparation method thereof for protecting and purifying toxic and harmful gases in closed and isolated spaces or cabins under normal temperature and pressure, and is especially suitable for treating hydrogen sulfide (H 2 S), sulfur dioxide (SO 2 ), nitrogen oxides (NO X ), ozone (O 3 ), organic amines and benzene and other volatile organic compounds (VOCs) to achieve the purpose of air purification. Background technique [0002] Activated carbon has been used to purify air and water for a long time. At present, activated carbon is still widely used as adsorbent in air purification equipment and various adsorption devices. The application of impregnated activated carbon greatly improves the ability of activated carbon to acid gases and other difficult adsorption Physical) adsorption capacity of small molecule harmful gases. However, the usual impregnated activated carbon is only used to purify o...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/32
Inventor 乔惠贤尹维东袁义胜陈魁学
Owner NO 63971 TROOPS PLA
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