CN104888723A - Adsorbent for industrial silicon furnace and preparation method for adsorbent - Google Patents
Adsorbent for industrial silicon furnace and preparation method for adsorbent Download PDFInfo
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- CN104888723A CN104888723A CN201510238434.XA CN201510238434A CN104888723A CN 104888723 A CN104888723 A CN 104888723A CN 201510238434 A CN201510238434 A CN 201510238434A CN 104888723 A CN104888723 A CN 104888723A
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Abstract
The invention discloses an adsorbent for an industrial silicon furnace 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, 15-22 parts of kaolin, 10-13 parts of silica gel powder and a proper amount of deionized water. The adsorbent disclosed by the invention overcomes the defect of preferential adsorption of the existing adsorbent, and is wide in adsorption range, abundant in source of raw materials, free of environmental pollution, safe and controllable in preparation process and convenient to operate, and is worth being popularized.
Description
Technical field
The present invention relates to a kind of absorbent fields, be specifically related to a kind of industrial silicon furnace adsorbent and preparation method thereof.
Background technology
With silica mineral and carbonaceous reducing agent etc. to be raw material through carbothermic method produce siliceous more than 97% product, be commonly referred to industrial silicon in China, industrial silicon be widely used in metallurgy, electrically, aviation, machinery, chemical industry, medicine, national defence, the field such as building.In recent years, by the international silicon market price sharp rise on impact, the development of China industrial silicon production is very fast, and technical equipment also improves constantly, and annual industrial silicon produces and accounts for 1/3rd of world industry silicon output.But the flue gas that metal-silicon furnace produces has a great impact environment tool, therefore administers flue gas, existing environment and social benefit, has again obvious economic benefit.
Zeolite is a kind of porous matrix type aluminosilicate molecular sieves, can be used as ion-exchanger, adsorption separating agent, catalyst etc.In zeolitic frameworks, micropore size is very homogeneous because the crystallographic property in hole makes it distribute, and selective absorption can be carried out to the molecule varied in size in inner hole.Zeolite is a kind of strong polar adsorbent, very easily hydrone isopolarity molecule, because self silica alumina ratio is different with pore size, has selective to opposed polarity molecule, have in duct can be exchanged metal cation, have special suction-operated to some specific molecular.In exhaust-gas treatment, zeolite can adsorb sulfur dioxide in waste gas and nitrogen oxide, but its adsorbance is low, utilizes method of modifying can change electrical, aperture of zeolite etc., can be used for adsorbing the gas of different molecular characteristic and diameter.
Shitosan is the product that chitin removes part acetyl group; shitosan has raw without degradable, advantage that toxicity is low, and it and amino very easily form quaternary ammonium compound cation, have weakly-basic anion exchange interaction; not only to the waste water energy decolouring of printing and dyeing, also there is good chelation to transition metal ions.Shitosan is the polymer substance of linear structure, can dissolve in an acidic solution, poor stability, is difficult to form grain structure, and during for mass transfer separation process, equilibration time is long, and mass transfer rate is slow, in fixed bed, receive certain restriction as adsorbent application.The present invention adopts infusion process by shitosan and modified zeolite mixing, and the adsorbent surface of preparation is uneven, enhances absorption dynamics, and micropore quantity obviously increases, and obvious increase is melted in hole, and specific area improves, and therefore has stronger adsorption capacity.
Summary of the invention
The object of this invention is to provide a kind of industrial silicon furnace adsorbent and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of industrial silicon furnace adsorbent and preparation method thereof, is made up of the raw material of following weight portion: zeolite 30-50, Alumina gel 3-4, polyvinylpyrrolidone 0.4-1, chitosan 15-20, PAMC 0.1-0.3, kaolin 15-22, silica white 10-13, deionized water are appropriate;
A kind of industrial silicon furnace adsorbent of the present invention and preparation method thereof, be made up of following concrete steps:
(1) zeolite 0.1mol/l hydrochloric acid solution is soaked 24h, cross and filter impurity, by deionized water, zeolite washing is extremely neutral, 300-500 ° of C is mixed and heated to polyvinylpyrrolidone after drying and crushing, obtain porous zeolite, again porous zeolite, PAMC and distilled water are added to ultrasonic 20-40min in ultrasonator, obtain modified zeolite after oven dry for subsequent use;
(2) by modified zeolite, Alumina gel, kaolin, silica white and deionized water mixing and stirring, be heated to 80-100 ° of C, continue stirring until and become pasty state, stop heating, mixture to be inserted in baking oven dry for standby under 105 ° of C;
(3) acetum of chitosan by 3-5 times amount 3% is dissolved, then the mixture of step (2) is added to furnishing pasty state in chitosan solution, to be added in baking oven heat drying under 100 ° of C after stirring, then porphyrize is crossed 200 mesh sieves and get final product.
Advantage of the present invention is: the present invention adopts zeolite at high temperature to calcine formation loose structure, utilize the modified porous zeolite of PAMC, electronegative colloid is formed at zeolite surface, enhance the adsorptivity of zeolite itself, and strengthen the compatibility with shitosan, improve the micropore quantity of compound adsorbent, enlarged hole volume makes adsorbent have stronger adsorption capacity, the invention solves the shortcoming of adsorbent selective absorption, adsorption range is wide, abundant raw material source, free from environmental pollution, safe preparation process is controlled, easy to operate, is worthy to be popularized.
Detailed description of the invention
Below by instantiation, the present invention is described in detail.
A kind of industrial silicon furnace adsorbent and preparation method thereof, is made up of the raw material of following weight portion (kilogram): zeolite 44, Alumina gel 3, polyvinylpyrrolidone 0.6, chitosan 18, PAMC 0.2, kaolin 17, silica white 11, deionized water are appropriate;
A kind of industrial silicon furnace adsorbent of the present invention and preparation method thereof, be made up of following concrete steps:
(1) zeolite 0.1mol/l hydrochloric acid solution is soaked 24h, cross and filter impurity, by deionized water, zeolite washing is extremely neutral, 450 ° of C are mixed and heated to polyvinylpyrrolidone after drying and crushing, obtain porous zeolite, again porous zeolite, PAMC and distilled water are added to ultrasonic 30min in ultrasonator, obtain modified zeolite after oven dry for subsequent use;
(2) by modified zeolite, Alumina gel, kaolin, silica white and deionized water mixing and stirring, be heated to 90 ° of C, continue stirring until and become pasty state, stop heating, mixture to be inserted in baking oven dry for standby under 105 ° of C;
(3) acetum of chitosan by 4 times amount 3% is dissolved, then the mixture of step (2) is added to furnishing pasty state in chitosan solution, to be added in baking oven heat drying under 100 ° of C after stirring, then porphyrize is crossed 200 mesh sieves and get final product.
After measured, the adsorbent capacity prepared by the present invention is 6.35mmol/g, is 97.3% to the arresting efficiency of micronic dust.
Claims (2)
1. industrial silicon furnace adsorbent and preparation method thereof, it is characterized in that, be made up of the raw material of following weight portion: zeolite 30-50, Alumina gel 3-4, polyvinylpyrrolidone 0.4-1, chitosan 15-20, PAMC 0.1-0.3, kaolin 15-22, silica white 10-13, deionized water are appropriate.
2. a kind of industrial silicon furnace adsorbent and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:
(1) zeolite 0.1mol/l hydrochloric acid solution is soaked 24h, cross and filter impurity, by deionized water, zeolite washing is extremely neutral, 300-500 ° of C is mixed and heated to polyvinylpyrrolidone after drying and crushing, obtain porous zeolite, again porous zeolite, PAMC and distilled water are added to ultrasonic 20-40min in ultrasonator, obtain modified zeolite after oven dry for subsequent use;
(2) by modified zeolite, Alumina gel, kaolin, silica white and deionized water mixing and stirring, be heated to 80-100 ° of C, continue stirring until and become pasty state, stop heating, mixture to be inserted in baking oven dry for standby under 105 ° of C;
(3) acetum of chitosan by 3-5 times amount 3% is dissolved, then the mixture of step (2) is added to furnishing pasty state in chitosan solution, to be added in baking oven heat drying under 100 ° of C after stirring, then porphyrize is crossed 200 mesh sieves and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510238434.XA CN104888723A (en) | 2015-05-12 | 2015-05-12 | Adsorbent for industrial silicon furnace and preparation method for adsorbent |
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| CN201510238434.XA CN104888723A (en) | 2015-05-12 | 2015-05-12 | Adsorbent for industrial silicon furnace and preparation method for adsorbent |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797496A (en) * | 2010-01-07 | 2010-08-11 | 北京林业大学 | Preparation method of inorganic-organic compound-type adsorbent based on clinoptilolite and application for removing Cr(VI) in industrial waste water |
| CN102500328A (en) * | 2011-09-30 | 2012-06-20 | 上海海洋大学 | Preparation method and application of adsorbent of organic and inorganic composite material |
| CN102527347A (en) * | 2012-01-19 | 2012-07-04 | 上海海洋大学 | Magnetic chitosan/cationic surface active agent modified zeolite adsorbent and preparation method and application thereof |
| CN103191700A (en) * | 2013-04-15 | 2013-07-10 | 北京中地泓科环境科技有限公司 | Chitosan/natural zeolite material for removing fluorine in water |
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2015
- 2015-05-12 CN CN201510238434.XA patent/CN104888723A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797496A (en) * | 2010-01-07 | 2010-08-11 | 北京林业大学 | Preparation method of inorganic-organic compound-type adsorbent based on clinoptilolite and application for removing Cr(VI) in industrial waste water |
| CN102500328A (en) * | 2011-09-30 | 2012-06-20 | 上海海洋大学 | Preparation method and application of adsorbent of organic and inorganic composite material |
| CN102527347A (en) * | 2012-01-19 | 2012-07-04 | 上海海洋大学 | Magnetic chitosan/cationic surface active agent modified zeolite adsorbent and preparation method and application thereof |
| CN103191700A (en) * | 2013-04-15 | 2013-07-10 | 北京中地泓科环境科技有限公司 | Chitosan/natural zeolite material for removing fluorine in water |
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Application publication date: 20150909 |