CN103252210A - 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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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 VOCs preparation of adsorbent method in a kind of air, belong to the adsorbent synthesis technical field.
Background technology
Blast furnace slag is a kind of industrial solid wastes.The slag of discharging in the blast furnace ironmaking process claims blast-furnace cinder again.China discharges more than 2,000 ten thousand tons at present every year approximately.Slag is thrown the 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 synthetic phyllosilicate of blast furnace slag, belong to orthorhombic system, the Si4+ of part can be replaced by Al3+ in the structure, therefore have unique stratiform space structure. make it to airborne VOCs(VOC) have stronger suction-operated, thus the basis of silicates adsorbent at aspects such as air cleanings established.
The synthetic method of VOCs adsorbent mainly is that employing template or sol-gal process are synthetic at present, and synthetic method program is loaded down with trivial details, material expensive, requirement to industrial equipment is also harsh relatively, and produce secondary pollution in synthetic, be unfavorable for long-range development, the synthetic method of therefore exploring new adsorbent has great importance.
Summary of the invention
Technical problem to be solved by this invention provides VOCs preparation of adsorbent method in a kind of air, the synthetic VOCs adsorbent of this method have simple to operate, economical fast, advantage such as synthetic safe and environmental pollution is little, can be used for containing in the practical applications such as air cleaning of VOCs, open up new development prospect for the comprehensive utilization of blast furnace slag and VOCs adsorbent synthetic, can be used for fields such as industry and environment.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: VOCs preparation of adsorbent method in a kind of air comprises:
1) chemical composition of analysis raw material blast furnace slag: adopt the constituent content in X-ray fluorescence spectra analytic approach (XRF) the analysis blast furnace slag, and compare by constituent content calculating Ca/ (Al+Si) ratio and Al/ (Al+Si);
2) regulate blast furnace slag Ca/ (Al+Si) than and Al/ (Al+Si) ratio: by add CaO and Si source or Al source regulate Ca/ (Al+Si) than to 0.5-2.0 and Al/ (Al+Si) ratio to 0.05-0.15, get mixture;
3) preparation feedback mixture: with 2) mixture that obtains mixes by mass ratio 1:5-1:20 with water, stirs 5-10 minute in 25 ℃;
4) synthetic adsorbent: with 3) mixture that obtains places reactor, reacts 10-24 hour down in 180 ℃, obtains product, and product is cleaned with deionized water, in 35-100 ℃ of oven dry down, namely gets adsorbent;
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 (Al;
The invention has the beneficial effects as follows:
The synthetic VOCs adsorbent of this method have simple to operate, economical fast, advantage such as synthetic safe and environmental pollution is little, and used instrument and equipment is conventional equipment, can be used for containing in the practical applications such as air cleaning of VOCs, open up new development prospect for the comprehensive utilization of blast furnace slag and VOCs adsorbent synthetic, can be used for fields such as industry and environment.
The specific embodiment
Below principle of the present invention and feature are described, institute only gives an actual example and to be used for explaining the present invention, is not for restriction scope of the present invention.
Embodiment 1
1) chemical composition analysis of raw material blast furnace slag: adopt X-ray fluorescence spectra analytic approach (XRF) to analyze constituent content in the blast furnace slag, and calculate Ca/ (Al+Si) than being 0.03 by constituent content, Al/ (Al+Si) is than being 0.165;
2) regulate blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio: in the 1g blast furnace slag, add 0.48g CaO and 0.087gSiO
2Regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio respectively to 0.8 and 0.15;
3) preparation of reactant mixture: in the mixture of the ratio of regulating, add the 31mL deionized water, stirred 10 minutes down in 25 ℃;
4) synthetic adsorbent: reactant mixture is placed reactor, and reaction obtained product in 24 hours under 180 ℃, and product is cleaned with deionized water, namely obtains adsorbent in 80 ℃ of following oven dry;
5) get the synthetic adsorbent of 10g and place 1L to collect the air that contains VOCs, adsorb the concentration of utilizing VOCs in the gas chromatographic analysis air after 24 hours, obtain airborne VOCs concentration 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: adopt X-ray fluorescence spectra analytic approach (XRF) to analyze constituent content in the blast furnace slag, and calculate Ca/ (Al+Si) than being 0.03 by constituent content, Al/ (Al+Si) is than being 0.165;
2) regulate blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio: in the 0.7g blast furnace slag, add 0.51g CaO and 0.39gSiO
2Regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio respectively to 0.8 and 0.1;
3) preparation of reactant mixture: in the mixture of the ratio of regulating, add the 32mL deionized water, stirred 10 minutes in 25 ℃;
4) synthetic adsorbent: reactant mixture is placed reactor, and reaction obtained product in 24 hours under 180 ℃, and product is cleaned with deionized water, namely obtains adsorbent in 80 ℃ of following oven dry;
5) get the synthetic adsorbent of 10g and place 1L to collect the air that contains VOCs, adsorb the concentration of utilizing VOCs in the gas chromatographic analysis air after 24 hours, obtain airborne VOCs concentration 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: adopt X-ray fluorescence spectra analytic approach (XRF) to analyze constituent content in the blast furnace slag, and calculate Ca/ (Al+Si) than being 0.03 by constituent content, Al/ (Al+Si) is than being 0.165;
2) regulate blast furnace slag Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio: in the 0.35g blast furnace slag, add 0.51g CaO and 0.7gSiO
2Regulate Ca/ (Al+Si) ratio and Al/ (Al+Si) ratio respectively to 1.0 and 0.05;
3) preparation of reactant mixture: in the mixture of the ratio of regulating, add the 31mL deionized water, stirred 10 minutes down in 25 ℃;
4) synthetic adsorbent: reactant mixture is placed reactor, and reaction obtained product in 24 hours under 180 ℃, and product is cleaned with deionized water, namely obtains adsorbent in 80 ℃ of following oven dry;
5) get the air that the synthetic adsorbent of 10g places the printing process of 1L collection, adsorb the concentration of utilizing VOCs in the gas chromatographic analysis air after 24 hours, obtain airborne VOCs concentration from 1.15mg/m
3Be reduced to 0.12mg/m
3, adsorption rate reaches 89.6%.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. VOCs preparation of adsorbent method in the air is characterized in that, comprising:
1) chemical composition of analysis raw material blast furnace slag: adopt the constituent content in the X-ray fluorescence spectra analytic approach analysis blast furnace slag, and compare by constituent content calculating Ca/ (Al+Si) ratio and Al/ (Al+Si);
2) regulate blast furnace slag Ca/ (Al+Si) than and Al/ (Al+Si) ratio: by add CaO and Si source or Al source regulate Ca/ (Al+Si) than to 0.5-2.0 and Al/ (Al+Si) ratio to 0.05-0.15, get mixture;
3) preparation feedback mixture: with 2) mixture that obtains mixes by mass ratio 1:5-1:20 with water, stirs 5-10 minute in 25 ℃;
4) synthetic adsorbent: with 3) mixture that obtains places reactor, reacts 10-24 hour down in 180 ℃, obtains product, and product is cleaned with deionized water, in 35-100 ℃ of oven dry down, namely gets adsorbent.
2. according to the preparation method of claim 1, it is characterized in that, 2) in, described Si source is silica or hydrated sodium silicate.
3. according to the preparation method of claim 1, it is characterized in that, 2) in, described Al source is alundum (Al.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801283A (en) * | 2015-04-24 | 2015-07-29 | 吴雪健 | Preparation method of compound adsorbent for purifying VOCs in air |
| 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 |
| 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 |
| CN107115763A (en) * | 2017-05-25 | 2017-09-01 | 广西壮族自治区环境保护科学研究院 | A kind of preparation method of absorption VOCS materials |
| 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 |
| CN107185400A (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 material |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801283A (en) * | 2015-04-24 | 2015-07-29 | 吴雪健 | Preparation method of compound adsorbent for purifying VOCs in air |
| 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 |
| 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 |
| CN107115763A (en) * | 2017-05-25 | 2017-09-01 | 广西壮族自治区环境保护科学研究院 | A kind of preparation method of absorption VOCS materials |
| 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 |
| CN107185400A (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 material |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
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