CN103252210B - Method for preparing adsorbent for volatile organic compounds (VOCs) in air - Google Patents
Method for preparing adsorbent for volatile organic compounds (VOCs) in air Download PDFInfo
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- CN103252210B CN103252210B CN201310191480.XA CN201310191480A CN103252210B CN 103252210 B CN103252210 B CN 103252210B CN 201310191480 A CN201310191480 A CN 201310191480A CN 103252210 B CN103252210 B CN 103252210B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a method for preparing an adsorbent for volatile organic compounds (VOCs) in air. The method comprises the following steps of: 1) analyzing chemical components of raw material blast furnace slag; 2) adjusting a Ca/(Al+Si) ratio and an Al/(Al+Si) ratio of the blast furnace slag; 3) preparing a reaction mixture; and 4) synthesizing the adsorbent for the VOCs. The method for synthesizing the adsorbent for the VOCs is simple to operate, economical, quick, high in synthesis safety, low environment pollution and the like; the adsorbent can be applied to actual application of VOCs-containing air purification; a new development prospect is developed for the comprehensive utilization of the blast furnace slag and the synthesis of the VOCs adsorbent; and the method can be used in the fields of industries and environments.
Description
Technical field
The present invention relates to the preparation method of VOCs adsorbent in a kind of air, belong to adsorbent synthesis technical field.
Background technology
Blast furnace slag is a kind of industrial solid wastes.The slag of discharging in blast furnace ironmaking process, also known as blast-furnace cinder.China is annual at present about discharges more than 2,000 ten thousand tons.Slag throws meeting land occupation aside, waste resource, contaminated environment.Blast furnace slag contains the oxide of calcium, silicon, aluminium, magnesium, manganese, iron etc., therefore provides possibility for blast furnace slag synthetic silicic acid salt adsorbent.With the phyllosilicate of blast furnace slag synthesis, belong to orthorhombic system, in structure, the Si4+ of part can be replaced by Al3+, therefore there is unique Layered-space structure. make it to the VOCs(VOC in air) there is stronger suction-operated, thus established the basis of silicates adsorbent in purification of air etc.
The synthetic method of current VOCs adsorbent mainly adopts template or sol-gal process synthesis, and the method program of synthesis is loaded down with trivial details, material expensive, also relatively harsh to the requirement of industrial equipment, and produce secondary pollution in synthesis, be unfavorable for long-range development, the synthetic method therefore exploring new adsorbent has great importance.
Summary of the invention
Technical problem to be solved by this invention is to provide the preparation method of VOCs adsorbent in a kind of air, this method synthesis VOCs adsorbent have simple to operate, economical fast, the advantage such as the high and environmental pollution of synthesis security is little, can be used in the practical applications such as the purification of air containing VOCs, for the comprehensive utilization of blast furnace slag and the synthesis of VOCs adsorbent open new development prospect, can be used for the fields such as industry and environment.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the preparation method of VOCs adsorbent in a kind of air, comprising:
1) analyze the chemical composition of raw material blast furnace slag: the constituent content in blast furnace slag is analyzed in employing X-ray fluorescence spectra analytic approach (XRF), and calculate Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio by constituent content;
2) regulate blast furnace slag Ca/ (Al+Si) than and Al/ (Al+Si) ratio: regulating Ca/ (Al+Si) than to 0.5-2.0 and Al/ (Al+Si) ratio to 0.05-0.15 by adding CaO and Si source or Al source, obtaining mixture;
3) preparation feedback mixture: by 2) mixture that obtains and water in mass ratio 1:5-1:20 mix, stir 5-10 minute in 25 DEG C;
4) synthetic adsorbent: by 3) mixture that obtains is placed in reactor, and at 180 DEG C, react 10-24 hour, obtain product, product deionized water is cleaned, and dries, obtain adsorbent at 35-100 DEG C;
On the basis of technique scheme, the present invention can also do following improvement.
Further, 2) in, described Si source is silica or hydrated sodium silicate;
Further, 2) in, described Al source is alundum (Al2O3);
The invention has the beneficial effects as follows:
This method synthesis VOCs adsorbent have simple to operate, economical fast, the advantage such as the high and environmental pollution of synthesis security is little, and instrument equipment is conventional equipment, can be used in the practical applications such as the purification of air containing VOCs, for the comprehensive utilization of blast furnace slag and the synthesis of VOCs adsorbent open new development prospect, can be used for the fields such as industry and environment.
Detailed description of the invention
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
1) chemical composition analysis of raw material blast furnace slag: the constituent content in blast furnace slag is analyzed in employing X-ray fluorescence spectra analytic approach (XRF), and calculate Ca/ (Al+Si) than being 0.03, Al/ (Al+Si) than being 0.165 by constituent content;
2) blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio is regulated: in 1g blast furnace slag, add 0.48gCaO and 0.087gSiO
2regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) than respectively to 0.8 and 0.15;
3) preparation of reactant mixture: add 31mL deionized water in the mixture regulating ratio, stirs 10 minutes at 25 DEG C;
4) synthetic adsorbent: reactant mixture is placed in reactor, at 180 DEG C, reaction obtains product in 24 hours, and product deionized water is cleaned, and dries and namely obtain adsorbent at 80 DEG C;
5) adsorbent getting 10g synthesis is placed in 1L and collects containing the air of VOCs, adsorbs the concentration utilizing VOCs in gas chromatographic analysis air after 24 hours, obtains VOCs concentration in air from 1.15mg/m
3be reduced to 0.10mg/m
3, adsorption rate reaches 91%.
Embodiment 2
1) chemical composition analysis of raw material blast furnace slag: the constituent content in blast furnace slag is analyzed in employing X-ray fluorescence spectra analytic approach (XRF), and calculate Ca/ (Al+Si) than being 0.03, Al/ (Al+Si) than being 0.165 by constituent content;
2) blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio is regulated: in 0.7g blast furnace slag, add 0.51g CaO and 0.39gSiO
2regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) than respectively to 0.8 and 0.1;
3) preparation of reactant mixture: add 32mL deionized water in the mixture regulating ratio, stirs 10 minutes in 25 DEG C;
4) synthetic adsorbent: reactant mixture is placed in reactor, at 180 DEG C, reaction obtains product in 24 hours, and product deionized water is cleaned, and dries and namely obtain adsorbent at 80 DEG C;
5) adsorbent getting 10g synthesis is placed in 1L and collects containing the air of VOCs, adsorbs the concentration utilizing VOCs in gas chromatographic analysis air after 24 hours, obtains VOCs concentration in air from 1.15mg/m
3be reduced to 0.08mg/m
3, adsorption rate reaches 93%.
Embodiment 3
1) chemical composition analysis of raw material blast furnace slag: the constituent content in blast furnace slag is analyzed in employing X-ray fluorescence spectra analytic approach (XRF), and calculate Ca/ (Al+Si) than being 0.03, Al/ (Al+Si) than being 0.165 by constituent content;
2) blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio is regulated: in 0.35g blast furnace slag, add 0.51g CaO and 0.7gSiO
2regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) than respectively to 1.0 and 0.05;
3) preparation of reactant mixture: add 31mL deionized water in the mixture regulating ratio, stirs 10 minutes at 25 DEG C;
4) synthetic adsorbent: reactant mixture is placed in reactor, at 180 DEG C, reaction obtains product in 24 hours, and product deionized water is cleaned, and dries and namely obtain adsorbent at 80 DEG C;
5) adsorbent getting 10g synthesis is placed in the air of printing process that 1L collects, and adsorbs the concentration utilizing VOCs in gas chromatographic analysis air after 24 hours, obtains VOCs concentration in air from 1.15mg/m
3be reduced to 0.12mg/m
3, adsorption rate reaches 89.6%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the preparation method of VOCs adsorbent in air, is characterized in that, comprising:
1) analyze the chemical composition of raw material blast furnace slag: adopt the constituent content in X-ray fluorescence spectra analytic approach analysis blast furnace slag, and calculate Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio by constituent content;
2) regulate blast furnace slag Ca/ (Al+Si) than and Al/ (Al+Si) ratio: regulating Ca/ (Al+Si) than to 0.5-2.0 and Al/ (Al+Si) ratio to 0.05-0.15 by adding CaO and Si source or Al source, obtaining mixture;
3) preparation feedback mixture: by 2) mixture that obtains and water in mass ratio 1:5-1:20 mix, stir 5-10 minute in 25 DEG C;
4) synthetic adsorbent: by 3) mixture that obtains is placed in reactor, and at 180 DEG C, react 10-24 hour, obtain product, product deionized water is cleaned, and dries, obtain adsorbent at 35-100 DEG C.
2. preparation method according to claim 1, is characterized in that, 2) in, described Si source is silica or hydrated sodium silicate.
3. preparation method according to claim 1, is characterized in that, 2) in, described Al source is alundum (Al2O3).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801283B (en) * | 2015-04-24 | 2017-06-20 | 马鞍山华盛冶金科技发展有限公司 | A kind of preparation method for the compound adsorbent of VOCs in purify air |
| CN107051184A (en) * | 2017-05-25 | 2017-08-18 | 广西壮族自治区环境保护科学研究院 | A kind of bioanalysis for being used to administer volatile organic matter |
| CN107008145A (en) * | 2017-05-25 | 2017-08-04 | 广西壮族自治区环境保护科学研究院 | A kind of filtering material and its application in degraded VOCs |
| CN107185478A (en) * | 2017-05-25 | 2017-09-22 | 广西壮族自治区环境保护科学研究院 | A kind of synthetic adsorbent, preparation method and its application in degraded VOCs |
| CN107115763B (en) * | 2017-05-25 | 2020-11-13 | 广西壮族自治区环境保护科学研究院 | Preparation method of VOCS (volatile organic Compounds) absorbing material |
| CN107185400B (en) * | 2017-05-25 | 2020-11-17 | 广西壮族自治区环境保护科学研究院 | Material for absorbing VOCs |
| CN107185392A (en) * | 2017-05-25 | 2017-09-22 | 广西壮族自治区环境保护科学研究院 | A kind of reaction system for being used to absorb VOCS |
| CN107185401A (en) * | 2017-05-25 | 2017-09-22 | 广西壮族自治区环境保护科学研究院 | A kind of absorption VOCS equipment |
| CN107138039A (en) * | 2017-05-25 | 2017-09-08 | 广西壮族自治区环境保护科学研究院 | A kind of system for the VOCs that degrades |
| CN107254418A (en) * | 2017-05-25 | 2017-10-17 | 广西壮族自治区环境保护科学研究院 | A kind of bacterium and its application in absorption VOCs |
| CN107224988A (en) * | 2017-05-25 | 2017-10-03 | 广西壮族自治区环境保护科学研究院 | A kind of catalyst, preparation method and its application in absorption VOCS |
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| GB9926898D0 (en) * | 1999-11-12 | 2000-01-12 | School Of Earth & Environmenta | Calcium silicate sorbents |
| US20050211090A1 (en) * | 2003-08-25 | 2005-09-29 | Mccullough Matthew L | Method for achieving ultra-low emission limits in VOC control |
| CN100537023C (en) * | 2007-11-08 | 2009-09-09 | 武汉科技大学 | Photocatalyst having response to visible light and preparation thereof |
| CN102069001B (en) * | 2010-12-20 | 2012-07-04 | 武汉钢铁(集团)公司 | Preparation process for preparing photocatalyst from blast furnace slag serving as raw material |
| CN102745700B (en) * | 2012-06-14 | 2014-05-21 | 湖北富邦科技股份有限公司 | Preparation method for synthesizing tobermorite through using blast furnace slag as raw material |
| CN102698707A (en) * | 2012-06-29 | 2012-10-03 | 武汉钢铁(集团)公司 | Industrial wastewater adsorbent and preparation method thereof |
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