CN102274713B - Method for preparing benzene adsorbing material by utilizing discarded activated aluminum oxide - Google Patents
Method for preparing benzene adsorbing material by utilizing discarded activated aluminum oxide Download PDFInfo
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- CN102274713B CN102274713B CN 201110225789 CN201110225789A CN102274713B CN 102274713 B CN102274713 B CN 102274713B CN 201110225789 CN201110225789 CN 201110225789 CN 201110225789 A CN201110225789 A CN 201110225789A CN 102274713 B CN102274713 B CN 102274713B
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- aluminum oxide
- activated alumina
- activated aluminum
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- benzene
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Abstract
The invention relates to a method for preparing a benzene adsorbing material by utilizing a discarded activated aluminum oxide. In the method, an activated aluminum oxide/active carbon composite material which has a high adsorption effect on benzene is prepared by cleaning, filtering and drying the discarded activated aluminum oxide and by closed heat treatment at low temperature. In the method, due to the adoption of a closed low-temperature heat treatment mode, holes which are blocked in the discarded activated aluminum oxide can be perforated, and organic matters adsorbed to the discarded activated aluminum oxide can be directly discomposed and carbonized and stored in the aluminum oxide holes to form active carbon, so air pollution is reduced. The method has a novel process, is simple, easy and low in cost and has a high environment friendliness and economic value, and wastes can be turned into wealth.
Description
Technical field
The present invention relates to a kind of method of utilizing of discarded activated alumina, be specially and utilize discarded activated alumina to prepare the method for benzene adsorption material.
Background technology
Along with industrial expansion, the consumption of countries in the world industrial catalyst increases sharply, and most of dead catalyst, spent sorbents abandon as solid waste, not only causes the wasting of resources, also environment is caused great pollution.Activated alumina is one of principal item of catalyst carrier and adsorbent, and it has, and purity height, raw material are easy to get, easy to process, the advantage such as physico-chemical property is adjustable.In the hydrogen peroxide industrial production in chemical plant, activated alumina is used to adsorb anthraquinone degradation products, also is used for these degradation products are converted into effective anthraquinone.Along with the prolongation of service time, the activity of aluminium oxide can reduce gradually, must change until can not satisfy production requirement.The discarded activated alumina that changes is discarded in a large number, has not only caused the waste of resource, and the foul smell that gives out also can pollute the border and make.
Summary of the invention
The purpose of this invention is to provide a kind of the utilization and discard the method that activated alumina prepares benzene adsorption material, this method is simple, and is with low cost, and secondary pollution is few, has effectively utilized waste resource, and social and economic effects is remarkable.
Technical scheme of the present invention is as follows: waste activated alumina after cleaning, drying or dry, is placed kiln 300-600 ℃ of airtight calcining, and then insulation 2 ~ 3h naturally cools to room temperature, namely makes benzene adsorption material.
Described waste activated alumina is in the hydrogen peroxide production process of chemical plant, in order to the activated alumina of purification and reproduction operation liquid, through using the granular solids discarded object after losing efficacy.
Benefit of the present invention and superiority are: the present invention is take discarded activated alumina as raw material, and for adsorbing the characteristics that large amount of organic is arranged in the discarded activated alumina, adopt the method for easy airtight low temperature calcination with organic matter carbonizing, because activated alumina has been poromerics, charcoal after charing also reaches micron order, the composite of a kind of activated alumina of self-assembling formation and active carbon, research experiment show that the composite that makes is excellent to the absorption property of benzene.
The specific embodiment
Raw material: discarded activated alumina.
Concrete preparation process is:
(1) preliminary treatment: will discard activated alumina and remove impurity with the clear water rinsing, and put into drying box and dry or dry.
(2) calcining: will dry good discarded activated alumina and pack in the closed container, and build lid, and put into kiln, (heating rate with 200 ℃/h rises to 300-600 ℃, and insulation 2 ~ 3h) is cooled off after charing is processed naturally, gets final product to carry out Low Temperature Heat Treatment.Attached: benzene determining adsorption and computational methods
Adopt airtight glass drier, pour liquid benzene in the bottom of drier, with the sample that weighs up the in advance weighing in the measuring cup of packing into, sample heavily is m
0, gross weight is m
1, then the measuring cup with uncap is placed on the dividing plate of drier, builds the lid of drier.Under 30 ℃ of steady temperatures, benzene volatilizees naturally, adsorbs 24h, after absorption finishes, and weighing behind taking-up measuring cup and the quick cover lid, the rear gross weight of note absorption is m
2, adopt following formula to calculate the benzene adsorption rate.
In the formula:
ηThe benzene adsorption rate of-sample, %;
m 0 -sample and measuring cup gross weight, g;
m 1 -not sample and measuring cup gross weight after the adsorption dry, g;
m 2 Sample and measuring cup gross weight after-the absorption, g.
Below in conjunction with specific embodiment content of the present invention is specifically described:
Embodiment 1:
Utilize discarded activated alumina development benzene adsorption material, its raw material is as follows: discarded activated alumina.
Preparation process is:
(1) preliminary treatment: will discard activated alumina and wash through clear water, and dry.
(2) calcining: will dry good discarded activated alumina and pack in the ceramic crucible, and build lid, and put into kiln, and rise to 300 ℃ of insulation 3h with the heating rate of 200 ℃/h, and namely get composite after cooling off with stove.
Performance: the iodine sorption value of sample is that the carbon element content of 233.27 mg/g, sample is 3.57%, and specific area is 234.70m
2/ g, pore volume are 0.41m
3/ g, average pore size are 6.59 nm, and sample has good adsorption effect to benzene, and the saturated adsorption rate can reach 21.80%.
Embodiment 2:
Utilize discarded activated alumina development benzene adsorption material, its raw material is as follows: discarded activated alumina.
Preparation process is:
(1) preliminary treatment: will discard activated alumina and wash through clear water, and put into 100 ℃ of oven dry of drying box constant temperature 1h.
(2) calcining: will dry good discarded activated alumina and pack in the stainless steel jar, and build lid, and put into kiln, and rise to 400 ℃ of insulation 2h with the heating rate of 200 ℃/h, and namely get composite after cooling off with stove.
Performance: the iodine sorption value of sample is that 231.44 mg/g, carbon element content are 2.36%, and specific area is 205.1m
2/ g, pore volume are 0.43m
3/ g, average pore size are 7.82nm, and sample has good adsorption effect to benzene, and the saturated adsorption rate can reach 23.28%.
Embodiment 3:
Utilize discarded activated alumina development benzene adsorption material, its raw material is as follows: discarded activated alumina.
Preparation process is:
(1) preliminary treatment: will discard activated alumina and wash through clear water, and put into 100 ℃ of oven dry of drying box constant temperature 1h.
(2) calcining: will dry good discarded activated alumina and pack in the stainless steel jar, and build lid, and put into kiln, and rise to 500 ℃ of insulation 2h with the heating rate of 200 ℃/h, and namely get composite after cooling off with stove.
Performance: the iodine sorption value of sample is that 231.44mg/g, carbon element content are 1.89%, and specific area is 242.20m
2/ g, pore volume are 0.46m
3/ g, average pore size are 7.11 nm, and sample has good adsorption effect to benzene, and the saturated adsorption rate can reach 24.01%.
Embodiment 4:
Utilize discarded activated alumina development benzene adsorption material, its raw material is as follows: discarded activated alumina.
Preparation process is:
(1) preliminary treatment: will discard activated alumina and wash through clear water, and put into 100 ℃ of oven dry of drying box constant temperature 1h.
(2) calcining: will dry good discarded activated alumina and pack in the vitreous silica matter crucible, and build lid, and put into kiln, and rise to 600 ℃ of insulation 2h with the heating rate of 200 ℃/h, and namely get composite after cooling off with stove.
Performance: the iodine sorption value of sample is that 232.36mg/g, carbon element content are 2.03%, and specific area is 237.2m
2/ g, pore volume are 0.47m
3/ g, average pore size are 7.58 nm, and sample has good adsorption effect to benzene, and the saturated adsorption rate can reach 24.19%.
Good to the adsorption effect of benzene by the benzene adsorption material that can find out this method preparation in the above enforcement, the saturated adsorption value all can reach more than 20%.
Claims (2)
1. one kind is utilized discarded activated alumina to prepare the method for benzene adsorption material, it is characterized in that: waste activated alumina after cleaning, drying or dry, is placed kiln 300-600 ℃ of airtight calcining, insulation 2 ~ 3h, then naturally cool to room temperature, namely make benzene adsorption material.
2. the discarded activated alumina of utilization according to claim 1 prepares the method for benzene adsorption material, it is characterized in that: described waste activated alumina is in the hydrogen peroxide production process of chemical plant, in order to the activated alumina of purification and reproduction operation liquid, through using the granular solids discarded object after losing efficacy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110225789 CN102274713B (en) | 2011-08-08 | 2011-08-08 | Method for preparing benzene adsorbing material by utilizing discarded activated aluminum oxide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110225789 CN102274713B (en) | 2011-08-08 | 2011-08-08 | Method for preparing benzene adsorbing material by utilizing discarded activated aluminum oxide |
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| CN102274713A CN102274713A (en) | 2011-12-14 |
| CN102274713B true CN102274713B (en) | 2013-04-17 |
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| CN104667993B (en) * | 2013-11-29 | 2017-06-20 | 中国石油化工股份有限公司 | catalyst carrier material, catalyst carrier and preparation method thereof |
| CN107051371B (en) * | 2017-06-14 | 2019-12-13 | 芜湖格丰环保科技研究院有限公司 | Renewable adsorption material for deep phosphorus removal of water body, preparation method and application thereof |
| CN108654583A (en) * | 2018-05-30 | 2018-10-16 | 安徽工程大学 | The circulation utilization method of adsorbent aluminium oxide |
| CN110615644A (en) * | 2019-10-31 | 2019-12-27 | 廖少忠 | Light partition board capable of adsorbing harmful gas such as formaldehyde and its making process |
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| DE19528220C1 (en) * | 1995-08-01 | 1997-01-09 | Degussa | Process for regenerating a catalyst and process for producing an epoxide in the presence of the catalyst |
| CN100357181C (en) * | 2006-02-16 | 2007-12-26 | 福州大学 | Dilute nitric acid solution dipping and calcination process for regenerating waste active alumina |
| US7699975B2 (en) * | 2007-12-21 | 2010-04-20 | Uop Llc | Method and system of heating a fluid catalytic cracking unit for overall CO2 reduction |
| CN100525901C (en) * | 2008-01-23 | 2009-08-12 | 昆明理工大学 | Regeneration method of dead catalyst |
| CN101890336B (en) * | 2010-08-31 | 2012-06-06 | 福州大学 | Activated alumina and activated carbon compounded material and preparation method thereof |
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