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Adsorbent for electric furnace smoke and preparation method for adsorbent

An adsorbent and flue gas technology, which is applied in the field of adsorbent for electric furnace flue gas and its preparation, can solve the problems of difficulty in forming particle structure, slow mass transfer rate, long equilibrium time, etc., and achieves increased pore volume and strong adsorption capacity. , the effect of high adsorption capacity

Inactive Publication Date: 2015-09-09
ANHUI XINKUN PURIFICATION EQUIP
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  • Abstract
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Problems solved by technology

Chitosan is a polymer substance with a linear structure. It will dissolve in an acidic solution, has poor stability, and is difficult to form a granular structure. When used in the mass transfer separation process, the equilibrium time is long and the mass transfer rate is slow. It is used in a fixed bed as a Adsorbent applications are subject to certain limitations

Method used

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Embodiment Construction

[0012] The present invention will be described in detail below through specific examples.

[0013] An adsorbent for electric furnace flue gas and its preparation method, which is made of the following raw materials in parts by weight (kg): zeolite 46, aluminum sol 3, polyvinylpyrrolidone 0.6, chitosan 18, cationic polyacrylamide 0.2, Diatomaceous earth 14, calcium silicate 5, sepiolite 8, appropriate amount of deionized water;

[0014] An adsorbent for electric furnace flue gas according to the present invention and a preparation method thereof are made by the following specific steps:

[0015] (1) Soak the zeolite in 0.1mol / l hydrochloric acid solution for 24 hours, filter to remove impurities, wash the zeolite with deionized water until neutral, dry and pulverize it, mix it with polyvinylpyrrolidone and heat it to 450°C to obtain a porous zeolite, and then Add porous zeolite, cationic polyacrylamide and distilled water to an ultrasonic oscillator for 30 minutes of ultra...

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Abstract

The invention discloses an adsorbent for electric furnace smoke and a preparation method for the adsorbent. The adsorbent is characterized by being prepared from the following raw materials in parts by weight: 30-50 parts of zeolite, 3-4 parts of an alumina sol, 0.4-1 part of polyvinylpyrrolidone, 15-20 parts of deacetylchitin, 0.1-0.3 part of cationic polyacrylamide, 13-15 parts of diatomite, 5-6 parts of calcium silicate, 6-9 parts of sepiolite and a proper amount of deionized water. The adsorbent disclosed by the invention is relatively high in adsorption rate and adsorption capacity, low in price, abundant in source of raw materials, simple and environmental-friendly in preparation process, good in effect of purifying electric furnace smoke, and relatively high in economic and social benefits, and is worth being popularized.

Description

technical field [0001] The invention relates to the field of adsorbents, in particular to an adsorbent for electric furnace flue gas and a preparation method thereof. Background technique [0002] The current electric furnace is operated under a slight positive pressure or a slight negative pressure atmosphere, which does not have good sealing performance. Even if there is smoke exhaust in the furnace during electric furnace smelting, some flue gas will overflow. There is a large amount of flue gas overflowing, and the flue gas of the electric furnace mainly contains smoke dust, carbon monoxide, organic matter and heavy metals, etc., which seriously endanger the environment and the health of operators. [0003] Zeolite is a porous skeleton aluminosilicate molecular sieve, which can be used as ion exchanger, adsorption separation agent, catalyst, etc. The pore size of micropores in the zeolite framework is very uniform due to the crystalline nature of the pores, and the int...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02
Inventor 黄平
Owner ANHUI XINKUN PURIFICATION EQUIP
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