CN101028923A - Production of super-activated carbon from petroleum coke - Google Patents
Production of super-activated carbon from petroleum coke Download PDFInfo
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- CN101028923A CN101028923A CN 200610057999 CN200610057999A CN101028923A CN 101028923 A CN101028923 A CN 101028923A CN 200610057999 CN200610057999 CN 200610057999 CN 200610057999 A CN200610057999 A CN 200610057999A CN 101028923 A CN101028923 A CN 101028923A
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- activated carbon
- super
- preoxidation
- refinery coke
- alkali metal
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Abstract
A process for preparing super activated carbon from petroleum coke includes such steps as breaking,heating in O2 contained gas for pre-oxidizing to obtain the pre-oxidized porous coke, proportionally mixing it with hydroxide of alkali metal, heating in inertial gas for activating, cooling, washing and drying.
Description
Technical field
The invention provides and a kind ofly prepare the method for super-activated carbon, belong to field of fine chemical with refinery coke.
Background technology
Specific surface area is at 2000m
2The above gac of/g is called super-activated carbon, and this type of gac specific surface area is big, adsorptive power is extremely strong, is widely used in fields such as electronics, medicine, catalysis, gas delivery and storage.Usually the raw material of preparation gac is mainly coal, wood chip and shell etc., and carbon content is on the low side relatively, and ash is big, is difficult for the preparation high quality active carbon.Refinery coke is as the byproduct of petrochemical complex, abundant raw material, and the carbon content height, generally 85～95%, and ash low (＜0.5%), be the desirable feedstock of preparation gac, but the refinery coke degree of graphitization want high than other a few class raw materials, relatively is difficult to activation.CN 87105195.8 direct refinery cokes with fragmentation are warming up to 500～800 ℃ and keep obtaining gac in 1～3 hour, and the gac specific surface area that this method makes is not high, and yield is too low; With the steam activation refinery coke, the iodine sorption value that makes gac is 600mg/g to JP 74-14395 under 900 ℃.Also relevant for the refinery coke being the report that raw material employing chemical activation method prepares gac, wherein activate based on alkali metal hydroxides such as KOH, alkali charcoal ratio is generally 3～8: 1, CN 1304788A directly mixes the back high-temperature activation with KOH and refinery coke by 5: 1 mass ratio, and the product specific surface area surpasses 3500m
2/ g, the gac specific surface area height of this method preparation, but alkali charcoal ratio is big in the raw material, because the price of KOH is very high, causes product cost also very high.
Summary of the invention
The object of the present invention is to provide a kind of is the method for feedstock production super-activated carbon with refinery coke before forging.Technical scheme of the present invention is as follows:
Refinery coke is crushed to 10～200 orders before will forging, under oxygenous atmosphere, speed with 5～25 ℃/min is warming up to 250～550 ℃, and kept temperature 0.2～10 hour, carry out pre-oxidation treatment, the volatile substances oxidation is burnt loses, formation has preoxidation Jiao of certain porosity, by mass ratio preoxidation Jiao is mixed with alkali metal hydroxide then, under inert atmosphere, carry out high-temperature activation, activation temperature is 500～900 ℃, and soak time is 0.5～4 hour, and cooling is after washing, drying obtains the super-activated carbon product.
The preceding refinery coke of forging of fragmentation of the present invention at first carries out pre-oxidation treatment.Pre-oxidation treatment is to carry out in the oxygen-containing atmosphere between oxygen level 5～30% (percent by volume).Oil incipient scorch mistake rate was controlled at 5～50% before the pre-oxidation treatment process was forged, and the iodine sorption value of the burnt porosity of preoxidation is controlled at 80～380mg/g.
Alkali metal hydroxide of the present invention is solid or its aqueous solution of KOH or NaOH, and alkali metal hydroxide (in solid) is 0.1～2: 1 with preoxidation Jiao's mass ratio.
The present invention has the following advantages:
1. adopt the oxygen pre-oxidation process, make refinery coke form certain hole, can increase the initial contact area with the alkaline activation agent, improve the utilization ratio of activation efficiency and activator through preoxidation.
2. pretreatment technology is simple, directly utilizes oxygenous atmosphere to handle, and is low for equipment requirements.
3. alkaline activation agent consumption reduces, and alkali metal hydroxide (in solid) is lower than 2: 1 with preoxidation Jiao's mass ratio, can effectively reduce cost.
Embodiment
Example 1
Refinery coke was crushed to 140～160 orders before Qilu Petrochemical forged, and under air atmosphere, was warming up to 450 ℃ with the speed of 10～20 ℃/min, and pre-oxidation treatment 1.5 hours is burnt mistake rate 35%, the burnt iodine sorption value 260mg/g of preoxidation.In 1: 1 ratio of mass ratio solid KOH and preoxidation Jiao are mixed then, at N
2Atmosphere activates for following 850 ℃, and soak time is 1 hour, the cooling after the washing, drying, obtain activated carbon product, specific surface area 2640m
2/ g.
Example 2
Refinery coke was crushed to 100～120 orders before Jinzhou petrochemical industry forged, and under air atmosphere, was warming up to 400 ℃ with the speed of 10～20 ℃/min, and pre-oxidation treatment 2 hours is burnt mistake rate 23%, the burnt iodine sorption value 175mg/g of preoxidation.In 1.5: 1 ratio of mass ratio solid KOH and preoxidation Jiao are mixed then, at N
2Atmosphere activates for following 830 ℃, and soak time is 1.5 hours, the cooling after the washing, drying, obtain activated carbon product, specific surface area 3150m
2/ g.
Example 3
Refinery coke was crushed to 140～160 orders before Jinzhou petrochemical industry forged, and under air atmosphere, was warming up to 400 ℃ with the speed of 10～20 ℃/min, and pre-oxidation treatment 2 hours is burnt mistake rate 23%, the burnt iodine sorption value 175mg/g of preoxidation.In 0.5: 1 ratio of mass ratio solid NaOH and preoxidation Jiao are mixed then, at N
2Atmosphere activates for following 800 ℃, and soak time is 2 hours, the cooling after the washing, drying, obtain activated carbon product, specific surface area 2130m
2/ g.
Claims (3)
1. one kind is the method for feedstock production super-activated carbon with the refinery coke, refinery coke is crushed to 10～200 orders before it is characterized in that forging, be to carry out pre-oxidation treatment under 5～30% the atmosphere at oxygenous volume, speed with 5～25 ℃/min is warming up to 250～550 ℃, kept 0.2～10 hour, make oxidation burn the mistake rate and be controlled within 5～50%, form preoxidation Jiao with hole simultaneously, iodine sorption value is within 80～300mg/g; Then with preoxidation burnt with alkali metal hydroxide by 0.1～2: 1 mass ratio mixes, under inert atmosphere, rise to 500～900 ℃ and activate, cooling after wash, drying obtains the super-activated carbon product.
2. according to the described method for preparing super-activated carbon of claim 1, it is characterized in that alkali metal hydroxide refers to solid or its aqueous solution of KOH or NaOH.
3. according to the described method for preparing super-activated carbon of claim 1, it is characterized in that soak time is 0.5～4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100579999A CN101028923B (en) | 2006-03-03 | 2006-03-03 | Production of super-activated carbon from petroleum coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100579999A CN101028923B (en) | 2006-03-03 | 2006-03-03 | Production of super-activated carbon from petroleum coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101028923A true CN101028923A (en) | 2007-09-05 |
| CN101028923B CN101028923B (en) | 2012-01-04 |
Family
ID=38714495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100579999A Expired - Fee Related CN101028923B (en) | 2006-03-03 | 2006-03-03 | Production of super-activated carbon from petroleum coke |
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| CN (1) | CN101028923B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153162A (en) * | 2011-04-29 | 2011-08-17 | 南京大学 | Application of KOH activated active carbon to removing antibiotics in water body through adsorption |
| CN104944424A (en) * | 2015-06-29 | 2015-09-30 | 宁夏宝塔石化科技实业发展有限公司 | Preparation method of activated carbon material with specific area of 2300 m<2>/g |
| CN105152166A (en) * | 2011-10-21 | 2015-12-16 | 昭和电工株式会社 | Graphite material, carbon material for battery electrode, and battery |
| CN105236404A (en) * | 2015-08-20 | 2016-01-13 | 深圳市贝特瑞新能源材料股份有限公司 | Petroleum coke based activated carbon for electrode material of supercapacitor, preparation method therefor and use thereof |
| CN107367442A (en) * | 2016-05-12 | 2017-11-21 | 鞍钢股份有限公司 | A kind of method that scaling loss amount is determined using coke dry quenching furnace gas amount of diffusin |
| CN115571879A (en) * | 2022-10-12 | 2023-01-06 | 兰州理工大学 | Biological absorption preparation method of biomass porous carbon |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091073C (en) * | 1998-12-25 | 2002-09-18 | 中国科学院山西煤炭化学研究所 | Preparation of active carbon adsorbing and storing methane |
| CN1406866A (en) * | 2001-09-06 | 2003-04-02 | 张惠欣 | Method for producing activaled carbon with high specific surface from refinery coke |
-
2006
- 2006-03-03 CN CN2006100579999A patent/CN101028923B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153162A (en) * | 2011-04-29 | 2011-08-17 | 南京大学 | Application of KOH activated active carbon to removing antibiotics in water body through adsorption |
| CN102153162B (en) * | 2011-04-29 | 2013-10-09 | 南京大学 | Application of KOH activated active carbon in removing antibiotics in water body through adsorption |
| CN105152166A (en) * | 2011-10-21 | 2015-12-16 | 昭和电工株式会社 | Graphite material, carbon material for battery electrode, and battery |
| CN105152166B (en) * | 2011-10-21 | 2017-08-08 | 昭和电工株式会社 | The manufacture method of graphite material and the manufacture method of electrode for lithium ion secondary battery |
| CN104944424A (en) * | 2015-06-29 | 2015-09-30 | 宁夏宝塔石化科技实业发展有限公司 | Preparation method of activated carbon material with specific area of 2300 m<2>/g |
| CN105236404A (en) * | 2015-08-20 | 2016-01-13 | 深圳市贝特瑞新能源材料股份有限公司 | Petroleum coke based activated carbon for electrode material of supercapacitor, preparation method therefor and use thereof |
| CN107367442A (en) * | 2016-05-12 | 2017-11-21 | 鞍钢股份有限公司 | A kind of method that scaling loss amount is determined using coke dry quenching furnace gas amount of diffusin |
| CN115571879A (en) * | 2022-10-12 | 2023-01-06 | 兰州理工大学 | Biological absorption preparation method of biomass porous carbon |
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| Publication number | Publication date |
|---|---|
| CN101028923B (en) | 2012-01-04 |
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Granted publication date: 20120104 Termination date: 20190303 |