CN102936012A - Method for preparing activated carbon with sludge serving as raw material - Google Patents
Method for preparing activated carbon with sludge serving as raw material Download PDFInfo
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- CN102936012A CN102936012A CN2012105161000A CN201210516100A CN102936012A CN 102936012 A CN102936012 A CN 102936012A CN 2012105161000 A CN2012105161000 A CN 2012105161000A CN 201210516100 A CN201210516100 A CN 201210516100A CN 102936012 A CN102936012 A CN 102936012A
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Abstract
The invention provides a method for preparing activated carbon with sludge serving as a raw material, and belongs to the field of activated carbon preparation using gaseous activation. Currently, wood and coal and the like are mostly used as the raw materials, preparation of the activated carbon with sludge as the raw material not only can realize the reduction and harm of the sludge but also can realize recycling. According to the method, the sludge from an urban sewage treatment plant is adopted as the raw material, and the sludge activated carbon is prepared by using a fluidized bed heating method and a physical activation method, wherein the reaction is carried out under the conditions that the activation temperature is at 500 to 700 DEG C and the activation time is 20 minutes to 1 hour. The sludge activated carbon prepared by the method contains more than 170mg/g of iodine and methylene blue adsorption value of over 50mg/g, and has a certain adsorption capacity. The sludge is wide in source and is low in price; and by adopting the preparation method, the energy consumption and the producing cost can be reduced, and the economic benefit is remarkable.
Description
Technical field
The present invention relates to a kind ofly novel prepare the method for gac with gaseous activator, especially adopt mud to prepare the method for gac as raw material low temperature.
Background technology
Adopt at present gaseous activator to prepare the method for gac, usually adopt timber, coal, shells etc. are done carbonaceous raw material, use water vapour, high-temperature flue gas or their mixed gas are as activated media, and activation stage generally will activate 24-72 hour under 700 ~ 900 ℃ of temperature condition.For example with timber or Wood waste as carbonaceous raw material, the preparation gac is because activation needs 24-48 hour, thereby in the manufacturing process cycle long, energy consumption is large, the product yield is low, add that raw material lacks and price is high, make its production and use all to be subject to certain restriction.
The objective of the invention is to select to environment pollution effect is arranged and various condition be fit to the preparation gac cheap rubbish---mud replaces the raw materials such as a large amount of timber, coal to prepare the absorbent charcoal material of the many performances of many specifications as raw material.Because the mixed culture body that mud is comprised of xenogenesis groups of individuals such as bacterium class, Mycophyta, protozoons, essential substance in the residual active sludge is still the residue after these microorganisms and the death thereof, be that most of material is organism in the residual active sludge, wherein contain 60%～70% crude protein, carbohydrate about 25%, and inorganic ash content only accounts for about 5%; On the other hand, the excess sludge carbon content is higher, and it forms useful molecules formula C
5H
7NO
2Expression, theoretical carbon content is about 53%.Owing to contain more carbon in the mud, possessed the objective condition of preparation gac, at a certain temperature pyrolysis charring activation makes gac.
Exploitation adopts mud to prepare the method for gac as raw material, can reduce the manufacturing cost of gac, enlarges gac and uses market, reduces to pollute also to reach utilization of waste material.
Technology contents
Technical problem: the invention provides a kind of method for preparation of active carbon that reduces environmental pollution and help to reduce production costs, this method can realize industrialized production preferably.
Technical scheme: the present invention utilizes mud as the method for preparing gac of raw material, adopt low temperature fluidization activation method to prepare the method for high-performance carbon sorbing material, utilize carbonaceous in the mud to prepare the method for gac, take municipal sewage sludge as raw material, under cold condition, adopt the mode of fluidized-bed heating, it is specific as follows to prepare active sludge carbon by physical activation method:
To be 300 ~ 400 ℃ of lower charing 1h-2h with this carbonaceous raw material at carbonization condition again through the mud of super-dry as carbonaceous raw material, be under 500 ~ 700 ℃ at activation condition, in fluidized-bed with steam activation 20min ~ 1h.
Described mud is that carbon element content is at the mud more than 15%.
The mud of described drying refers to that water ratio is the mud of water ratio below 15%.
Beneficial effect:
(1) the mud source is wide, and quantity is large, and the method not only can be removed a large amount of mud environmental contamination reductions and land seizure, because mud needs cost hardly, economic benefit is very remarkable simultaneously.
(2) adopt mud as carbonaceous raw material, soak time and temperature requiredly all shorten to some extent and reduces, thereby Energy Intensity Reduction, with short production cycle, add the raising of product yield, production cost reduces greatly, and its economy is much higher as raw material than timber etc.
(3) adopt fluidised mode low temperature to prepare active sludge carbon, compare with traditional physical activation method, its absorption property has had certain lifting, methylene blue adsorption value can reach more than the 60mg/g, and the advantage such as it is simple to have a device, and adapted breed changes, and production intensity is large.
Embodiment
Embodiment 1 adopt Transition In Jurong, Jiangsu sewage work mud through dehydrating and preliminary pyrolysis after remaining product as raw material.500 ℃ of lower steam activation 20min that use in fluidized-bed, after the fluidization activation was finished, abrasive dust can obtain active carbon powder.This example product yield is 71.55%, and tap density is 943kg/m
3, iodine sorption value is 233.48mg/g, methylene blue adsorption value is 60.47mg/g.
Embodiment 2 adopt Transition In Jurong, Jiangsu sewage works mud through dehydrating and preliminary pyrolysis after remaining product as raw material.600 ℃ of lower steam activation 30min that use in fluidized-bed, after the fluidization activation was finished, abrasive dust can obtain active carbon powder.This example product yield is 77.2%, and tap density is 951kg/m
3, iodine sorption value is 173.74mg/g, methylene blue adsorption value is 49.89mg/g.
Embodiment 3 adopt Transition In Jurong, Jiangsu sewage works mud through dehydrating and preliminary pyrolysis after remaining product as raw material.500 ℃ of lower steam activation 10min that use in fluidized-bed, after the fluidization activation was finished, abrasive dust can obtain active carbon powder.This example product yield is 70.25%, and tap density is 967kg/m
3, iodine sorption value is 188.67mg/g, methylene blue adsorption value is 50.51mg/g.
Claims (3)
1. method of utilizing mud to prepare gac as raw material, it is characterized in that will be through the mud of super-dry as carbonaceous raw material, be 300 ~ 400 ℃ of lower charing 1h-2h with this carbonaceous raw material at carbonization condition again, be under 500 ~ 700 ℃ at activation condition, in fluidized-bed with steam activation 20min ~ 1h.
2. the mud that utilizes according to claim 1 prepares the method for gac as raw material, it is characterized in that described mud is that carbon element content is at the mud more than 15%.
3. the mud that utilizes according to claim 1 and 2 prepares the method for gac as raw material, it is characterized in that the mud of described drying refers to that water ratio is the mud of water ratio below 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105161000A CN102936012A (en) | 2012-12-05 | 2012-12-05 | Method for preparing activated carbon with sludge serving as raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105161000A CN102936012A (en) | 2012-12-05 | 2012-12-05 | Method for preparing activated carbon with sludge serving as raw material |
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| CN102936012A true CN102936012A (en) | 2013-02-20 |
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| CN2012105161000A Pending CN102936012A (en) | 2012-12-05 | 2012-12-05 | Method for preparing activated carbon with sludge serving as raw material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084128A (en) * | 2014-07-22 | 2014-10-08 | 天津城建大学 | Kitchen waste residue modified sludge activated carbon for sweater treatment |
| CN106082209A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of method using low temperature to produce mud base charcoal and heavy metal adsorption application thereof |
| CN106698424A (en) * | 2016-12-08 | 2017-05-24 | 北京神雾环境能源科技集团股份有限公司 | System and method for rotary pyrolysis treatment of domestic sludge |
| CN106927462A (en) * | 2017-04-24 | 2017-07-07 | 句容市百诚活性炭有限公司 | A kind of preparation method of active sludge carbon |
| CN107188167A (en) * | 2017-05-24 | 2017-09-22 | 上海理工大学 | A kind of method that utilization activated by urine municipal sludge prepares active sludge carbon |
| CN107500290A (en) * | 2017-10-16 | 2017-12-22 | 安徽工业大学 | Recycling treatment method of cassava alcohol sludge |
| CN107640771A (en) * | 2016-07-22 | 2018-01-30 | 中国科学院大学 | A kind of compound matrix activated carbon of sludge coal and preparation method thereof |
| CN110002444A (en) * | 2019-04-10 | 2019-07-12 | 浙江清风源环保科技有限公司 | The preparation method of active carbon and active carbon |
| CN110078074A (en) * | 2019-04-10 | 2019-08-02 | 浙江清风源环保科技有限公司 | A kind of preparation of high absorption property sludge base charcoal and activation method |
| CN112279243A (en) * | 2020-10-21 | 2021-01-29 | 太原理工大学 | Coal gangue-sludge-based activated carbon, preparation method thereof and application thereof in mediating and strengthening anaerobic digestion of sewage |
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| CN1194235A (en) * | 1997-06-25 | 1998-09-30 | 宁夏万得吸附技术研究所 | Amorphous particulate active carbon made from antiracite and its producing method |
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| CN102205964A (en) * | 2011-04-25 | 2011-10-05 | 山东大学 | Granular activated carbon filler for paper mill sludge and preparation method thereof |
| CN102432007A (en) * | 2011-09-23 | 2012-05-02 | 南京工业大学 | Method for preparing activated carbon by physical activation of excess sludge |
| CN102658083A (en) * | 2012-04-28 | 2012-09-12 | 天津城市建设学院 | Modified sludge activated carbon for removing multiple heavy metals in sewage and sludge simultaneously |
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| CN1194235A (en) * | 1997-06-25 | 1998-09-30 | 宁夏万得吸附技术研究所 | Amorphous particulate active carbon made from antiracite and its producing method |
| CN1986399A (en) * | 2006-12-25 | 2007-06-27 | 天津城市建设学院 | Preparing process of active sludge carbon for desulfurizing fume |
| CN101244380A (en) * | 2008-03-20 | 2008-08-20 | 天津城市建设学院 | Gamma type di-aluminium trioxide film modified sewage sludge absorbent charcoal for flue gas desulfurization |
| CN101543763A (en) * | 2009-03-31 | 2009-09-30 | 天津城市建设学院 | Modified sludge activated carbon for desulfurization and denitration of flue gas and preparation method thereof |
| CN102205964A (en) * | 2011-04-25 | 2011-10-05 | 山东大学 | Granular activated carbon filler for paper mill sludge and preparation method thereof |
| CN102432007A (en) * | 2011-09-23 | 2012-05-02 | 南京工业大学 | Method for preparing activated carbon by physical activation of excess sludge |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084128B (en) * | 2014-07-22 | 2016-08-17 | 天津城建大学 | Changing food waste waste residue modification active sludge carbon is utilized for what waste water processed |
| CN104084128A (en) * | 2014-07-22 | 2014-10-08 | 天津城建大学 | Kitchen waste residue modified sludge activated carbon for sweater treatment |
| CN106082209A (en) * | 2016-06-13 | 2016-11-09 | 东南大学 | A kind of method using low temperature to produce mud base charcoal and heavy metal adsorption application thereof |
| CN107640771A (en) * | 2016-07-22 | 2018-01-30 | 中国科学院大学 | A kind of compound matrix activated carbon of sludge coal and preparation method thereof |
| CN106698424A (en) * | 2016-12-08 | 2017-05-24 | 北京神雾环境能源科技集团股份有限公司 | System and method for rotary pyrolysis treatment of domestic sludge |
| CN106927462A (en) * | 2017-04-24 | 2017-07-07 | 句容市百诚活性炭有限公司 | A kind of preparation method of active sludge carbon |
| CN107188167B (en) * | 2017-05-24 | 2019-06-28 | 上海理工大学 | A method of active sludge carbon is prepared using activated by urine municipal sludge |
| CN107188167A (en) * | 2017-05-24 | 2017-09-22 | 上海理工大学 | A kind of method that utilization activated by urine municipal sludge prepares active sludge carbon |
| CN107500290A (en) * | 2017-10-16 | 2017-12-22 | 安徽工业大学 | Recycling treatment method of cassava alcohol sludge |
| CN110002444A (en) * | 2019-04-10 | 2019-07-12 | 浙江清风源环保科技有限公司 | The preparation method of active carbon and active carbon |
| CN110078074A (en) * | 2019-04-10 | 2019-08-02 | 浙江清风源环保科技有限公司 | A kind of preparation of high absorption property sludge base charcoal and activation method |
| CN112279243A (en) * | 2020-10-21 | 2021-01-29 | 太原理工大学 | Coal gangue-sludge-based activated carbon, preparation method thereof and application thereof in mediating and strengthening anaerobic digestion of sewage |
| CN112279243B (en) * | 2020-10-21 | 2022-05-17 | 太原理工大学 | Coal gangue-sludge-based activated carbon, preparation method thereof and application thereof in mediating and strengthening anaerobic digestion of sewage |
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Application publication date: 20130220 |