CN104258815B - Adsorbing material for benzene series gas phase elimination and preparation method of adsorbing material - Google Patents
Adsorbing material for benzene series gas phase elimination and preparation method of adsorbing material Download PDFInfo
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- CN104258815B CN104258815B CN201410543110.2A CN201410543110A CN104258815B CN 104258815 B CN104258815 B CN 104258815B CN 201410543110 A CN201410543110 A CN 201410543110A CN 104258815 B CN104258815 B CN 104258815B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/302—Dimensions
- B01D2253/306—Surface area, e.g. BET-specific surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/302—Dimensions
- B01D2253/311—Porosity, e.g. pore volume
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Abstract
The invention provides an adsorbing material for benzene series gas phase elimination and a preparation method of the adsorbing material. The adsorbing material comprises raw material components in parts by weight as follows: 100 parts of activated carbon and 5-200 parts of an organic molecule precursor; the specific surface area of the adsorbing material is in a range of 800-2000 m＜2＞/g, and the pore volume is in a range of 1.5-3.0 cm＜3＞/g. The adsorbing material has the advantages as follows: (1) the preparation method of the adsorbing material is simple to operate, the synthetic process is environment-friendly, and the utilization rate of raw materials is high; (2) the raw materials used for preparing the adsorbing material are cheap and easy to obtain, so that the preparation cost of the adsorbing material is reduced, and the adsorbing material is easy to popularize; (3) the prepared adsorbing material can be effectively used for adsorption elimination of a gas-phase benzene series and has the advantages of high benzene series adsorption efficiency and high adsorption capacity; (4) the adsorbing material is easy to recover and can be completely desorbed to be recycled after simple treatment.
Description
Technical field
The invention belongs to benzene homologues gas purification technology for eliminating field, and in particular to it is a kind of for benzene homologues gas phase eliminate
Sorbing material and preparation method thereof.
Background technology
Aromatic compound, especially benzene and toluene, belong to important organic compound, either as raw material still
Serve as solvent, all with extremely important purposes.With the development of chemical industry in recent years, with benzene and toluene as raw material or in
The product of mesosome has played extremely important effect in the clothing, food, lodging and transportion -- basic necessities of life of people.However, can not ignore, benzene and toluene are same
When have volatility extremely strong, inflammable, hypertoxic, carcinogenic and the property such as mutagenesis, can volatilize naturally in use, it is seen then that if
Mishandling generation leakage undoubtedly can cause huge destruction to human body health and ecological environment.
According to statistics, the agricultural chemicals of significant proportion contains benzene homologues (benzene, toluene or derivatives thereof), while desinsection is removed the evil
Inevitably it evaporate into air.Many devices in people's life are prepared by materials such as plastics, resins, are being used
During can also volatilize the harmful substances such as a certain amount of ramification of benzene.Modern times finishing paint, coating used
Deng art work be even more the overwhelming majority also contain benzene/methylbenzene, beautify household while, also to the physical condition band of people
Carry out huge threat.
The approach for solving benzene/methylbenzene pollution at present is a lot, and the degree different choice absorption typically according to leakage, hole are buried, covered
The methods such as lid, steam decomposition.But for gas phase leakage, most effective method is adsorbed using sorbing material.
At present, sorbing material is generally modified molecular screen, macromolecule resin, oxide and activated carbon etc..Such as patent CN
101875005 A disclose styrene diethylene benzene copoly mer composite and are adsorbed for benzene, but, this kind of sorbing material
Numerous and diverse preparation technology is needed, also, it is necessary to the extremely toxic substance such as derivative and furans of nitrile is used as addition in preparation process
Agent.The A of patent CN 102274703 are disclosed carries out benzene adsorption applications using discarded activated alumina, although with the feature of environmental protection, but
Its adsorption efficiency to benzene is very limited.
Activated carbon due to its low cost, efficiency high, it is reproducible the features such as quite favored by everybody.The business of existing market supply
Industry activated carbon species is various, and the preferable cocoanut active charcoal of absorption property, the adsorption capacity of its benzene homologues is typically in the range of 100-
Between 250mg/g, and face the cost of great number.And aboundresources, the coal mass active carbon of reconfigurable is faced with adsorption capacity
It is relatively low (general<Problem 150mg/g).Therefore, how commercial activated carbon is significantly increased by simple, green, environmentally friendly means
Adsorption capacity and adsorption efficiency, with important actual application value.
The content of the invention
For prior art exist defect, the present invention provide it is a kind of for benzene homologues gas phase eliminate sorbing material and its
Preparation method, is used to solve the above problems.
The technical solution adopted by the present invention is as follows：
The present invention provide it is a kind of for benzene homologues gas phase eliminate sorbing material, including following weight portion raw material components：
The weight portion of activated carbon 100
Organic molecule presoma 5-200 weight portions；
Wherein, the specific surface area of the sorbing material is 800-2000m2/ g, pore volume is 1.5-3.0cm3/g。
Preferably, including following weight portion raw material components：
The weight portion of activated carbon 100
The weight portion of organic molecule presoma 100；
Wherein, the specific surface area of the sorbing material is 1500m2/ g, pore volume is 2.0cm3/g。
Preferably, the activated carbon is the coal mass active carbon with different shape and particle diameter, active fruit shell carbon, wooden activity
Charcoal or asphalt based active carbon.
Preferably, the organic molecule presoma is the one kind or several in hydrocarbon, aromatic compound or biomass
Kind.
Preferably, the hydrocarbon include citric acid, tartaric acid, butanedioic acid, ethanedioic acid, ascorbic acid, sucrose and
Glucose；The aromatic compound includes catechol, resorcinol and hydroquinones；The biomass include gelatin, I
Primary glue, agar and cellulose.
The present invention also provides a kind of preparation method of the sorbing material eliminated for benzene homologues gas phase, comprises the following steps：
S1, weighs the organic molecule presoma of formula ratio, it is dissolved into distilled water, obtains organic point of stable homogeneous
Sub- dispersion liquid；
S2, weighs the activated carbon of formula ratio, and the activated carbon that then will be weighed is completely immersed in the organic molecule point that S1 is obtained
In dispersion liquid, brushing treatment is carried out to activated carbon using organic molecule dispersion liquid, make organic molecule dispersion liquid well into activated carbon
Micropore in, after elapsed time T1 filter, leach activated carbon；
S3, treatment is dried to the activated carbon that S2 is filtered out, and obtains organic molecule-activity Carbon composites；
S4, the organic molecule obtained to S3-activity Carbon composites carry out calcination process, obtain modified activated carbon, and this is modified
Activated carbon is the final sorbing material eliminated for benzene homologues gas phase for preparing.
Preferably, in S1, the method that organic molecule presoma is dissolved into distilled water is：
Under ultrasonic field action, organic molecule presoma is set fully to be dissolved into distilled water；Wherein, ultrasonic field power is：
300 watts -3000 watts；Ultrasonic field action time is：5-60 minutes；Or
Stir in a heated condition, organic molecule presoma is fully dissolved into distilled water；Wherein, heating-up temperature is：
30-60℃；Heat time is：5-60 minutes.
Preferably, in S2, after activated carbon is filtered out, filtrate repeats and utilizes as the organic molecule dispersion liquid for reclaiming
2-10 times.
Preferably, in S1, the mass concentration of organic molecule dispersion liquid is：1%-50%；
In S2, the operating time for brushing treatment is that T1 is 10-60 minutes；
In S3, the temperature of dried process is 50-110 DEG C, and drying time is 6-12 hours；
In S4, sintering temperature is 150-450 DEG C, and roasting time is 5-300 minutes.
Preferably, in S1, the mass concentration of organic molecule dispersion liquid is：10%-30%；
In S2, the operating time for brushing treatment is that T1 is 20-40 minutes；
In S3, the temperature of dried process is 80-100 DEG C, and drying time is 8-10 hours；
In S4, sintering temperature is 250-350 DEG C, and roasting time is 20-60 minutes.
Sorbing material eliminated provided by the present invention for benzene homologues gas phase and preparation method thereof, with advantages below：
(1) preparation method of sorbing material is simple to operate, and building-up process green, raw material availability is high；
(2) each raw material for preparing sorbing material is cheap and easy to get, so as to reduce the preparation cost of sorbing material, easily promotes；
(3) absorption that the sorbing material for preparing can be effectively used for gas phase benzene homologues is eliminated, and is adsorbed with benzene homologues and imitated
Rate is high and the big advantage of adsorption capacity；
(4) sorbing material is easily recycled, and can be completely desorbed by simple process and reused.
Brief description of the drawings
The structural representation of the adsorbent equipment used when carrying out adsorption test that Fig. 1 is provided for the present invention；
Wherein, 1- adsorption tubes；2- contains the reagent bottle of benzene or toluene.
Specific embodiment
The present invention provides a kind of preparation method of the sorbing material eliminated for benzene homologues gas phase, comprises the following steps：
S1, weighs the organic molecule presoma of formula ratio, it is dissolved into distilled water, obtains organic point of stable homogeneous
Sub- dispersion liquid；
S2, weighs the activated carbon of formula ratio, and the activated carbon that then will be weighed is completely immersed in the organic molecule point that S1 is obtained
In dispersion liquid, brushing treatment is carried out to activated carbon using organic molecule dispersion liquid, make organic molecule dispersion liquid well into activated carbon
Micropore in, after elapsed time T1 filter, leach activated carbon；
S3, treatment is dried to the activated carbon that S2 is filtered out, and obtains organic molecule-activity Carbon composites；
S4, the organic molecule obtained to S3-activity Carbon composites carry out calcination process, obtain modified activated carbon, and this is modified
Activated carbon is the final sorbing material eliminated for benzene homologues gas phase for preparing.
Using above-mentioned preparation method, change the specific process parameter and raw material type for preparing, embodiment 1-14 carried out respectively,
The property of the specific process parameter of embodiment 1-14 and the sorbing material for preparing is referring to Tables 1 and 2：
Wherein, in Tables 1 and 2, each sorbing material is measured the adsorption capacity containing benzene homologues using following methods：
The adsorbent equipment that adsorption test is used is as shown in Figure 1.
Adsorption test operating method is：
(1) weighed after adsorption tube is dried first, obtained adsorption tube net weight, be designated as m0；
(2) weighed after sorbing material being loaded into adsorption tube, obtained adsorption tube and unadsorbed sorbing material gross weight, remembered
It is m1；
(3) adsorption tube that will be equipped with sorbing material is arranged on the adsorbent equipment shown in Fig. 1, is contained in reagent bottle 2 and contained
Benzene homologues, are then turn on gas circuit, the gas containing benzene homologues is continued through adsorption tube, are sampled every 10min and use meteorological color
Spectrometer is analyzed, and draws breakthrough curve.After material adsorption saturation to be adsorbed, remove adsorption tube and weigh, obtain adsorption tube and absorption
Sorbing material gross weight after saturation, is designated as m2。
The adsorbance of sorbing material is calculated using below equation：
The sorbing material preparation method embodiment 1-7 of table 1
The sorbing material preparation method embodiment 8-14 of table 2
Comparative example 1
This comparative example is used to compare what conventional activated carbon and sorbing material preparation method embodiment 1-7 of the present invention were prepared
The Adsorption of sorbing material, the results are shown in Table 3；Wherein, conventional activated carbon is when embodiment 1-7 prepares sorbing material and is made
Raw material activated carbon.
Table 3
As can be seen from the above table, the preparation-obtained sorbing material of method for being provided by the present invention and commercially available same type
Sorbing material compare, the adsorption capacity to benzene or toluene is significantly improved.
In addition, the sorbing material eliminated provided by the present invention for benzene homologues gas phase, by taking activated carbon as an example, due to activated carbon
When being adsorbed for benzene homologues, it is only capable of playing being enriched with and non-elimination effect, therefore, only need periodically carry out purified treatment i.e. to activated carbon
Can reuse, reclaimer operation is：By activated carbon, as (have sunshine more preferable) at outdoor ventilation, certain hour (>=3 hours) is i.e.
Can.Therefore, have the advantages that to be easily recycled.
In sum, the sorbing material and preparation method thereof for being eliminated provided by the present invention for benzene homologues gas phase, with
Lower advantage：(1) preparation method of sorbing material is simple to operate, and building-up process green, raw material availability is high；(2) adsorption material is prepared
Each raw material of material is cheap and easy to get, so as to reduce the preparation cost of sorbing material, easily promotes；(3) sorbing material for preparing
The absorption that can be effectively used for gas phase benzene homologues is eliminated, and has the advantages that benzene homologues adsorption efficiency is high and adsorption capacity is big；(4) adsorb
Material is easily recycled, and can be completely desorbed by simple process and reused.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (5)
1. it is a kind of for benzene homologues gas phase eliminate sorbing material preparation method, it is characterised in that disappear for benzene homologues gas phase
The sorbing material for removing includes the raw material components of following weight portion：
The weight portion of activated carbon 100
Organic molecule presoma 5-200 weight portions；
Wherein, the specific surface area of the sorbing material is 800-2000m2/ g, pore volume is 1.5-3.0cm3/g；
The organic molecule presoma is one or more in aromatic compound or biomass；
The aromatic compound includes catechol, resorcinol and hydroquinones；The biomass include gelatin, Arab
Glue, agar and cellulose；
The preparation method of the sorbing material eliminated for benzene homologues gas phase, comprises the following steps：
S1, weighs the organic molecule presoma of formula ratio, it is dissolved into distilled water, obtains the organic molecule point of stable homogeneous
Dispersion liquid；
S2, weighs the activated carbon of formula ratio, and the activated carbon that then will be weighed is completely immersed in the organic molecule dispersion liquid that S1 is obtained
In, brushing treatment is carried out to activated carbon using organic molecule dispersion liquid, make organic molecule dispersion liquid well into the micro- of activated carbon
Kong Zhong, filters after elapsed time T1, leaches activated carbon；
S3, treatment is dried to the activated carbon that S2 is filtered out, and obtains organic molecule-activity Carbon composites；
S4, the organic molecule obtained to S3-activity Carbon composites carry out calcination process, obtain modified activated carbon, the modified active
Charcoal is the final sorbing material eliminated for benzene homologues gas phase for preparing；
In S1, the method that organic molecule presoma is dissolved into distilled water is：
Under ultrasonic field action, organic molecule presoma is set fully to be dissolved into distilled water；Wherein, ultrasonic field power is：300
Watts -3000 watts；Ultrasonic field action time is：5-60 minutes；Or
Stir in a heated condition, organic molecule presoma is fully dissolved into distilled water；Wherein, heating-up temperature is：30-60
℃；Heat time is：5-60 minutes；
In S1, the mass concentration of organic molecule dispersion liquid is：1%-50%；
In S2, the operating time for brushing treatment is that T1 is 10-60 minutes；
In S3, the temperature of dried process is 50-110 DEG C, and drying time is 6-12 hours；
In S4, sintering temperature is 150-450 DEG C, and roasting time is 5-300 minutes.
2. it is according to claim 1 for benzene homologues gas phase eliminate sorbing material preparation method, it is characterised in that bag
Include the raw material components of following weight portion：
The weight portion of activated carbon 100
The weight portion of organic molecule presoma 100；
Wherein, the specific surface area of the sorbing material is 1500m2/ g, pore volume is 2.0cm3/g。
3. it is according to claim 1 for benzene homologues gas phase eliminate sorbing material preparation method, it is characterised in that institute
It is the coal mass active carbon with different shape and particle diameter, active fruit shell carbon, wood activated charcoal or asphalt based active carbon to state activated carbon.
4. it is according to claim 1 for benzene homologues gas phase eliminate sorbing material preparation method, it is characterised in that S2
In, after activated carbon is filtered out, filtrate repeats and utilizes 2-10 times as the organic molecule dispersion liquid for reclaiming.
5. it is according to claim 1 for benzene homologues gas phase eliminate sorbing material preparation method, it is characterised in that S1
In, the mass concentration of organic molecule dispersion liquid is：10%-30%；
In S2, the operating time for brushing treatment is that T1 is 20-40 minutes；
In S3, the temperature of dried process is 80-100 DEG C, and drying time is 8-10 hours；
In S4, sintering temperature is 250-350 DEG C, and roasting time is 20-60 minutes.
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| CN102941065A (en) * | 2012-11-06 | 2013-02-27 | 中国科学院山西煤炭化学研究所 | Carbon-based material adsorbent for removing heavy metals in waste water, its preparation method and application |
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Non-Patent Citations (2)
| Title |
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| 2种改性活性炭对甲苯吸附性能的对比研究;曹晓强等;《环境科学》;20081031;第29卷(第10期);第2868-2873页 * |
| 柠檬酸改性对活性炭吸附氨气的研究;傅成诚等;《黑龙江科技信息》;20081231;第34卷;第46页 * |
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