CN103285813A - Organic waste gas adsorbent and preparation method thereof - Google Patents
Organic waste gas adsorbent and preparation method thereof Download PDFInfo
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- CN103285813A CN103285813A CN2013102708744A CN201310270874A CN103285813A CN 103285813 A CN103285813 A CN 103285813A CN 2013102708744 A CN2013102708744 A CN 2013102708744A CN 201310270874 A CN201310270874 A CN 201310270874A CN 103285813 A CN103285813 A CN 103285813A
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- organic waste
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Abstract
The invention discloses an organic waste gas adsorbent. The adsorbent is prepared from the following components in percentage by weight: 80 to 90 percent of all-silicon molecular sieve, 8 to 15 percent of a natural mineral porous material, 2 to 5 percent of a nano-graphite material, as well as, based on the total weight of the three components, 1 to 5 percent of a pore-enlarging agent and 1 to 5 percent of peptizer. The invention discloses a method for preparing the organic waste gas adsorbent. The adsorbent prepared by the method is good in adsorption performance and durable in abrasion and large in treatment area.
Description
Technical field
The present invention relates to the organic exhaust gas process field, particularly relate to a kind of organic waste-gas adsorbant and preparation method thereof.
Background technology
In modern chemistry industry, medical industry and fine chemistry industrial production, some have the compound of suitable damage capability and recycling industrial chemicals and organic intermediate that some are expensive to environment, owing to technical reason, can be with reactor off-gas or discharging of waste liquid to natural environment.These compound concentrations have is low to moderate ppm concentration, have up to several percentage concentrations.These waste water, toxic emission, heavy damage natural environment not only, and cause a large amount of wastings of resources.Therefore, how to recycle these recycling resources to greatest extent, and will pollute control at minimum zone, be the target that current scientific worker and enterpriser make joint efforts and pursue always.
With the organic matter in waste gas, the waste liquid adsorb concentrated, to separate be these resources of recycling, realize non-pollution discharge and, reach one of most effectual way that greenization produces.The material of traditional absorption organic exhaust gas is mainly active carbon, diatomite, molecular sieve etc., but exist adsorption capacity low, under moisture atmosphere the absorption property shortcomings such as back adsorption capacity decline, operating cost height that significantly descend, regenerate.Before on the market the adsorbent such as carbon fiber, molecular sieve, natural ore deposit soil, what have has obtained positive effect in the application of specific occasion, even the industrially scalable of formation that has, still, the following shortcoming of their ubiquities:
1) these adsorbents all are the hydrophily adsorbents, and in steam and the aqueous solution, they are easy to adsorbed water, selectively adsorb organic compound;
2) they often can adsorb the inorganic and organic compound in the waste liquid simultaneously, can't effectively both be separated, and do not reach to separate the purpose of purifying;
3) these adsorbents are comparatively harsh to desorption condition, need organic solvent or stronger acid, aqueous slkali as release agent sometimes, increased cost on the one hand, might cause secondary pollution to environment on the other hand.
Be subjected to the restriction of above Several Factors, these adsorbents can't obtain fine application in organic steam, treatment of Organic Wastewater field at present.
Summary of the invention
In order to solve the art technical problem, an object of the present invention is to provide a kind of adsorption capacity height, the good organic waste-gas adsorbant of absorption property under water vapor condition.
Another object of the present invention provides a kind of preparation method of above-mentioned organic waste-gas adsorbant.
For this reason, technical scheme of the present invention is as follows:
A kind of organic waste-gas adsorbant is prepared from by by weight percentage following three kinds of components and in the expanding agent of the 1-5wt% of the gross weight of following three kinds of components and the peptizing agent of 1-5wt%:
Total silicon molecular sieve 80-90%,
Natural minerals porous material 8-15%,
Nano-graphite material 2-5%,
Wherein said total silicon molecular sieve is one or more among Y type, Beta type, modenite (MOR) type, MEL type, Silicalite-1, MCM-22, MCM-41 and the SBA-15, adopt when multiple, each model total silicon molecular sieve mixes silica alumina ratio 〉=12 of described Y type total silicon molecular sieve with any ratio.
Described natural porous mineral material is a kind of in galapectite, diatomite, bentonite, concavo-convex rod, kaolin, Ludox, boehmite and the aluminium glue or multiple mixture with any ratio wherein.
Described nano-graphite material is a kind of or two or three mixture with any ratio wherein in Graphene, CNT, the carbon fiber, preferably adopts Graphene.
Described expanding agent is a kind of in sesbania powder, methylcellulose, the polyvinyl alcohol or two or three mixture with any ratio wherein.
Described peptizing agent is a kind of in rare nitric acid, citric acid, the oxalic acid or two or three mixture with any ratio wherein, and the mass concentration of described rare nitric acid, citric acid, oxalic acid is 1-5%.
A kind of preparation method of above-mentioned organic waste-gas adsorbant may further comprise the steps:
1) described total silicon molecular sieve and nano-graphite material are mixed, under agitation add described natural minerals porous material then, mix;
2) add described expanding agent and peptizing agent, be stirred to the leather hard aftershaping, make cellular structure ceramic carrier;
3) after 100-120 ℃ of oven dry of described cellular structure ceramic carrier process, under inert atmosphere conditions, at 500-600 ℃ of roasting 4-30h, make described organic waste-gas adsorbant.
Adsorbent of the present invention has the following advantages:
1) the total silicon molecular sieve has very strong lipophile and hydrophobicity, and it can optionally be adsorbed with organic compounds effectively from steam, waste water, got rid of the Adsorption Effect of hydrone fully, thereby reached the purpose of micro-content organism in enrichment steam, the waste water.Because the hydrophobic molecule sieve is by Van der Waals force absorption organic molecule, so it is not high to organic adsorption strength, this just provides convenience for the organic matter of desorb enrichment.The regeneration of hydrophobic molecule sieve is very easy to, the hydrophobic molecule sieve has very high thermal stability and hydrothermal stability, when organic matter carbon distribution or obstruction take place at adsorbent, when absorption property descends, can carbon distribution be removed by hot-air is scorching hot, and the absorption property that guarantees adsorbent is constant, thereby has prolonged the service life of adsorbent.
2) nano-carbon material in the adsorbent, especially grapheme material have the ability of very strong adsorb organic compound, and itself have good hydrophobicity.
3) natural minerals in the adsorbent, especially porous natural minerals have good absorption and diffusivity, can improve adsorbents adsorb capacity and treating capacity, improve the anti-wear performance of adsorbent simultaneously.
4) adsorbent of the present invention has very high adsorption capacity, and the adsorption capacity of normal hexane is reached more than 30%, the adsorption capacity of naphthalene and naphthols is reached 3 mMs/more than the gram, service life was up to 10 years.
5) preparation method's technology of the present invention manufacturing cost simple, product is lower.
The specific embodiment
Below in conjunction with specific embodiment organic waste-gas adsorbant of the present invention and preparation method thereof is elaborated.
Embodiment 1
90gY type (silica alumina ratio is 12) total silicon molecular sieve and 2g Graphene mechanical agitation are mixed, add 8g galapectite powder while stirring, after the mechanical mixture 30 minutes, add 5g methylcellulose expanding agent and mix, dripping 100mL concentration then is rare nitric acid peptizing agent of 5wt%, be stirred to leather hard, carry out moulding and make cellular structure ceramic carrier, after 120 ℃ of oven dry, under the nitrogen atmosphere condition, at 600 ℃ of roasting 6h, make adsorbent of the present invention.
Above-mentioned adsorbent up to 43%, reaches 3.4 mM/grams to the adsorption capacity of naphthalene and naphthols to the adsorption capacity of normal hexane.
Embodiment 2
80g total silicon Beta molecular sieve and 5g Graphene mechanical agitation are mixed, add 15g diatomite powder while stirring, after the mechanical mixture 60 minutes, add 2g sesbania powder and mix, dripping 80g concentration then is the citric acid peptizing agent of 2wt%, be stirred to leather hard, carry out moulding and make cellular structure ceramic carrier, after 100 ℃ of oven dry, under the argon gas atmosphere condition, at 500 ℃ of roasting 10h, make adsorbent of the present invention.
Above-mentioned adsorbent up to 43%, reaches 3.8 mM/grams to the adsorption capacity of naphthalene and naphthols to the adsorption capacity of normal hexane.
Embodiment 3
80g total silicon Silicalite-1 molecular sieve and 5g CNT mechanical agitation are mixed, add 15g bentonite powder while stirring, after the mechanical mixture 60 minutes, add 2g methylcellulose expanding agent and mix, dripping 80g concentration then is the oxalic acid peptizing agent of 2wt%, be stirred to leather hard, carry out moulding and make cellular structure ceramic carrier, after 100 ℃ of oven dry, under the nitrogen atmosphere condition, at 500 ℃ of roasting 24h, make adsorbent of the present invention.
Above-mentioned adsorbent up to 39%, reaches 3.4 mM/grams to the adsorption capacity of naphthalene and naphthols to the adsorption capacity of normal hexane.
Embodiment 4
85g total silicon SBA-15 molecular sieve and 5g carbon fiber mechanical agitation are mixed, add 10g attapulgite body while stirring, mechanical mixture added 4g polyvinyl alcohol expanding agent and mixes after 60 minutes, dripping 60g concentration then is the citric acid peptizing agent of 5wt%, be stirred to leather hard, carry out moulding, make cellular structure ceramic carrier, after 100 ℃ of oven dry, under the nitrogen atmosphere condition, at 550 ℃ of roasting 4h, make adsorbent of the present invention.
Above-mentioned adsorbent up to 38%, reaches 3.3 mM/grams to the adsorption capacity of naphthalene and naphthols to the adsorption capacity of normal hexane.
Claims (8)
1. organic waste-gas adsorbant is characterized in that: be prepared from by by weight percentage following three kinds of components and in the expanding agent of the 1-5% of the gross weight of following three kinds of components and the peptizing agent of 1-5%:
Total silicon molecular sieve 80-90%,
Natural minerals porous material 8-15%,
Nano-graphite material 2-5%.
2. organic waste-gas adsorbant according to claim 1, it is characterized in that: described total silicon molecular sieve is one or more among Y type, Beta type, MOR type, MEL type, Silicalite-1, MCM-22, MCM-41 and the SBA-15, adopt when multiple, each model total silicon molecular sieve mixes silica alumina ratio 〉=12 of described Y type total silicon molecular sieve with any ratio.
3. organic waste-gas adsorbant according to claim 1 is characterized in that: described natural porous mineral material is a kind of in galapectite, diatomite, bentonite, concavo-convex rod, kaolin, Ludox, boehmite and the aluminium glue or multiple mixture with any ratio wherein.
4. organic waste-gas adsorbant according to claim 1, it is characterized in that: described nano-graphite material is a kind of or two or three mixture with any ratio wherein in Graphene, CNT, the carbon fiber.
5. organic waste-gas adsorbant according to claim 1, it is characterized in that: described nano-graphite material is Graphene.
6. organic waste-gas adsorbant according to claim 1 is characterized in that: described expanding agent is a kind of in sesbania powder, methylcellulose, the polyvinyl alcohol or two or three mixture with any ratio wherein.
7. organic waste-gas adsorbant according to claim 1, it is characterized in that: described peptizing agent is a kind of in rare nitric acid, citric acid, the oxalic acid or two or three mixture with any ratio wherein, and the mass concentration of described rare nitric acid, citric acid, oxalic acid is 1-5%.
8. the preparation method of each described organic waste-gas adsorbant in the claim 1～7 is characterized in that may further comprise the steps:
1) described total silicon molecular sieve and nano-graphite material are mixed, under agitation add described natural minerals porous material then, mix;
2) add described expanding agent and peptizing agent, be stirred to the leather hard aftershaping, make cellular structure ceramic carrier;
3) after 100-120 ℃ of oven dry of described cellular structure ceramic carrier process, under inert atmosphere conditions, at 500-600 ℃ of roasting 4-30h, make described organic waste-gas adsorbant.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785439A (en) * | 2014-02-19 | 2014-05-14 | 南京工业大学 | Dual-functional catalyst ABK/Y as well as preparation method and application thereof |
| CN104167258A (en) * | 2014-06-05 | 2014-11-26 | 哈尔滨工程大学 | Method for preparing graphene and diatomite conductive composite material |
| WO2016191802A1 (en) * | 2015-05-29 | 2016-12-08 | Adelaide Research & Innovation Pty Ltd | Composite graphene-based material |
| CN106430232A (en) * | 2016-09-30 | 2017-02-22 | 无锡市明盛强力风机有限公司 | Method for synthesizing 5A dewaxing molecular sieve from bentonite |
| CN107737526A (en) * | 2017-10-25 | 2018-02-27 | 成都新柯力化工科技有限公司 | The graphene catalytic plate and preparation method of a kind of high-efficient purification vehicle exhaust |
| CN108261917A (en) * | 2018-01-22 | 2018-07-10 | 孙国芳 | A kind of industry hot waste gas processing unit and treatment process |
| CN108264056A (en) * | 2018-03-02 | 2018-07-10 | 浙江大学 | A kind of method of no sodium solvent-free route synthesis total silicon Beta zeolite molecular sieve |
| CN108855018A (en) * | 2018-07-02 | 2018-11-23 | 安庆丰源化工有限公司 | A kind of fine chemistry industry waste-gas adsorbant and preparation method thereof |
| CN109173589A (en) * | 2018-09-29 | 2019-01-11 | 芜湖格丰环保科技研究院有限公司 | A kind of VOCs runner absorption molecular sieves compound material and preparation method thereof |
| CN109806848A (en) * | 2019-03-20 | 2019-05-28 | 江苏同康特种活性炭纤维面料有限公司 | A kind of environment-friendlyactive active carbon fiber exhaust gas adsorbent material and preparation method |
| CN111375372A (en) * | 2018-12-28 | 2020-07-07 | 上海星缇新材料有限公司 | High-adsorptivity hydrocarbon adsorption material and related preparation method |
| CN113750957A (en) * | 2020-06-05 | 2021-12-07 | 中国石油化工股份有限公司 | Y-type molecular sieve/graphene composite material and preparation method and application thereof |
| CN115430398A (en) * | 2022-08-10 | 2022-12-06 | 中国石油化工股份有限公司 | High-performance adsorbent and preparation method and application thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103785439B (en) * | 2014-02-19 | 2016-02-10 | 南京工业大学 | A kind of bifunctional catalyst ABK/Y and its preparation method and application |
| CN103785439A (en) * | 2014-02-19 | 2014-05-14 | 南京工业大学 | Dual-functional catalyst ABK/Y as well as preparation method and application thereof |
| CN104167258A (en) * | 2014-06-05 | 2014-11-26 | 哈尔滨工程大学 | Method for preparing graphene and diatomite conductive composite material |
| CN104167258B (en) * | 2014-06-05 | 2016-06-29 | 哈尔滨工程大学 | A kind of preparation method of Graphene and kieselguhr conducing composite material |
| US10864498B2 (en) | 2015-05-29 | 2020-12-15 | Adelaide Research & Innovation Pty Ltd | Composite graphene-based material |
| WO2016191802A1 (en) * | 2015-05-29 | 2016-12-08 | Adelaide Research & Innovation Pty Ltd | Composite graphene-based material |
| CN106430232A (en) * | 2016-09-30 | 2017-02-22 | 无锡市明盛强力风机有限公司 | Method for synthesizing 5A dewaxing molecular sieve from bentonite |
| CN107737526A (en) * | 2017-10-25 | 2018-02-27 | 成都新柯力化工科技有限公司 | The graphene catalytic plate and preparation method of a kind of high-efficient purification vehicle exhaust |
| CN108261917A (en) * | 2018-01-22 | 2018-07-10 | 孙国芳 | A kind of industry hot waste gas processing unit and treatment process |
| CN108264056A (en) * | 2018-03-02 | 2018-07-10 | 浙江大学 | A kind of method of no sodium solvent-free route synthesis total silicon Beta zeolite molecular sieve |
| CN108264056B (en) * | 2018-03-02 | 2020-08-14 | 浙江吉瑞通新材料有限公司 | Method for synthesizing all-silicon Beta zeolite molecular sieve by sodium-free and solvent-free route |
| CN108855018A (en) * | 2018-07-02 | 2018-11-23 | 安庆丰源化工有限公司 | A kind of fine chemistry industry waste-gas adsorbant and preparation method thereof |
| CN109173589A (en) * | 2018-09-29 | 2019-01-11 | 芜湖格丰环保科技研究院有限公司 | A kind of VOCs runner absorption molecular sieves compound material and preparation method thereof |
| CN111375372A (en) * | 2018-12-28 | 2020-07-07 | 上海星缇新材料有限公司 | High-adsorptivity hydrocarbon adsorption material and related preparation method |
| CN109806848A (en) * | 2019-03-20 | 2019-05-28 | 江苏同康特种活性炭纤维面料有限公司 | A kind of environment-friendlyactive active carbon fiber exhaust gas adsorbent material and preparation method |
| CN113750957A (en) * | 2020-06-05 | 2021-12-07 | 中国石油化工股份有限公司 | Y-type molecular sieve/graphene composite material and preparation method and application thereof |
| CN113750957B (en) * | 2020-06-05 | 2023-09-29 | 中国石油化工股份有限公司 | Y-type molecular sieve/graphene composite material and preparation method and application thereof |
| CN115430398A (en) * | 2022-08-10 | 2022-12-06 | 中国石油化工股份有限公司 | High-performance adsorbent and preparation method and application thereof |
| CN115430398B (en) * | 2022-08-10 | 2024-02-09 | 中国石油化工股份有限公司 | High-performance adsorbent and preparation method and application thereof |
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