CN102765718A - Method for preparing peach pit active carbon by chemical method - Google Patents
Method for preparing peach pit active carbon by chemical method Download PDFInfo
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- CN102765718A CN102765718A CN2011104359946A CN201110435994A CN102765718A CN 102765718 A CN102765718 A CN 102765718A CN 2011104359946 A CN2011104359946 A CN 2011104359946A CN 201110435994 A CN201110435994 A CN 201110435994A CN 102765718 A CN102765718 A CN 102765718A
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Abstract
The invention relates to a method for preparing peach pit active carbon by a chemical method, comprising the following steps of: drying peach pit, crushing, screening, dipping for 10-30 hours by the use of a chemical solution, putting into an activation furnace, heating to 500-900 DEG C at an anoxic state to carry out pyrolysis for the whole course of 1-4 hours and at the heating rate of 5-20 DEG C/min, rinsing an activation product by the use of distilled water, and drying to obtain active carbon, wherein an alkali liquor can be recycled. The methylene blue adsorption of the particle activated carbon prepared in the invention is 1-6mg/0.1g and the methylene blue adsorption of the prepared powdered active carbon is 4-9mg/0.1g. During the preparation process of active carbon, there is no discharge of waste water and exhaust gas. The invention belongs to the technical field of chemical processing of forest products.
Description
Technical field:
The invention belongs to the forest chemical technical field
Background technology:
2011, China's peach ultimate production increased nearly 30% compared with last year up to 1,500 ten thousand kilograms.The characteristics of peach are to be difficult for storing, and rot easily, and peach is processed into the important channel of peach industry for this reason, also just produces a large amount of peach-pits naturally.
Peach-pit is wooden hard, is the high quality raw material of producing gac, and northern China is abounded with the area of peach for this reason, and having is raw material in a large number with the peach-pit, and the physics method is produced the enterprise of peach-pit granulated active carbon.In these enterprises, have only with Slapple activating furnace and just can produce granulated active carbon than high absorption property.And Slapple activating furnace must be made an investment in more than 1,000,000 yuan, and this has limited making full use of of peach-pit.Do not have Slapple activating furnace for those, and produce the peanut of peach-pit granulated active carbon, its product adsorptivity is too poor, has only the 1-3mg/0.1g gac like the adsorptive value of methylene blue.
The technical Analysis of preparation gac
Be used to prepare process of active carbon at present physics method and chemical method two big classes are arranged.The physics method is pollution-free, and activation but temperature high (700-900 ℃) are about gac yield 20-50%
[1.5]The gac yield high (35-65%) of chemical method preparation is more suitable in liquid phase adsorption
[2]Current phosphoric acid method is because treatment of waste gas and recycle solve pollution problem basically
[3]Salt of wormwood, yellow soda ash, potassium hydroxide method etc., the acvator reusable edible, the gac specific surface of preparation is up to 1000m
2More than/the g, the no acidic waste gas of production process is discharged
[4]
Summary of the invention:
The present invention relates to after 10～30 hours, put into activation furnace with the chemical solution dip treating with behind the dry also crushing and screening of peach-pit, under anoxic condition, be warming up to 500～900 ℃ and carry out pyrolysis, omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min; Activation products promptly obtain gac after with zero(ppm) water rinsing, drying; Alkali lye is capable of circulation to be used again.The present invention prepares the Socryl Blue BRL adsorptive value of granulated active carbon at 1～6mg/0.1g, and the Socryl Blue BRL adsorptive value of preparation Powdered Activated Carbon is at 4～9mg/0.1g; The present invention prepares in the gac process, no waste water, exhaust gas emission.
Embodiment
Patent of the present invention belongs to laboratory small test invention, does not pass through the intermediate industrial test.Therefore, embodiment of the present invention is to carry out the intermediate industrial test, confirms that the peach-pit chemical method prepares the production line of gac.
Reference
[1]C.I.Sainz-Diaz，et?al.Activated?carbon?from?solid?wastes?using?a?pilot-scale?batch?flaming?pyrolyser[J].Fuel，79，15，2000，1863-1871
[2]V.Fierro，et?al.Kraft?lignin?as?a?precursor?for?microporous?activated?carbons?prepared?by?impregnation?with?ortho-phosphoric?acid：Synthesis?and?textural?characterization?Microporousand?Mesoporous?Materials[J].92，1-3，20?2006，243-250
[3]V.Fierro，et?al.Rice?straw?as?precursor?of?activated?carbons：Activation?with?ortho-phosphoric?acid?Journal?of?Hazardous?Materials[J].181，1-3，15，2010，27-34
[4]K.Okada，et?al.Porous?properties?of?activated?carbons?from?waste?newspaper?prepared?bychemical?and?physical?activation[J].Journal?of?Colloid?and?Interface?Science，262，1，2003，179-193
[5] Gu Ruisheng etc. peach-pit system indefinite form granulated active carbon and be used for absorption method and propose gold test [J]. forest chemical engineering communication, 1991,25 (6): 20-23
Claims (2)
1. a chemical method prepares the peach-pit process of active carbon: the present invention relates to behind the dry also crushing and screening of peach-pit; With salt of wormwood or yellow soda ash or sodium hydroxide or potassium hydroxide solution dip treating after 10～30 hours; Put into activation furnace; Under anoxic condition, be warming up to 500～900 ℃ and carry out pyrolysis, omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min; Activation products promptly obtain gac after with zero(ppm) water rinsing, drying; Alkali lye is capable of circulation to be used again.The present invention prepares the Socryl Blue BRL adsorptive value of granulated active carbon at 1～6mg/0.1g, and the Socryl Blue BRL adsorptive value of preparation Powdered Activated Carbon is at 4～9mg/0.1g; The present invention prepares in the gac process, no waste water, exhaust gas emission.
2. according to the said method of claim 1; Its gordian technique is with salt of wormwood or yellow soda ash or sodium hydroxide or potassium hydroxide solution dip treating peach-pit after 10～30 hours; Put into activation furnace; Under anoxic condition, be warming up to 500～900 ℃ and carry out pyrolysis, omnidistance 1～4 hour, temperature rise rate was 5～20 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104359946A CN102765718A (en) | 2011-12-23 | 2011-12-23 | Method for preparing peach pit active carbon by chemical method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104359946A CN102765718A (en) | 2011-12-23 | 2011-12-23 | Method for preparing peach pit active carbon by chemical method |
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| CN102765718A true CN102765718A (en) | 2012-11-07 |
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| CN2011104359946A Pending CN102765718A (en) | 2011-12-23 | 2011-12-23 | Method for preparing peach pit active carbon by chemical method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101910A (en) * | 2012-11-13 | 2013-05-15 | 苏州谷力生物科技有限公司 | Preparation method of active carbon using tea residue |
| CN105271220A (en) * | 2015-09-30 | 2016-01-27 | 江苏通瑞环保科技发展有限公司 | Method for preparing activated carbon by utilization of crop straw |
| CN106495149A (en) * | 2016-11-18 | 2017-03-15 | 刘春明 | The technique that a kind of biomass prepare high absorption property activated carbon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096274A (en) * | 1993-11-26 | 1994-12-14 | 贺德留 | Technology for producing wood amorphous granular active carbon by chemical method |
| CN101343058A (en) * | 2007-07-13 | 2009-01-14 | 李国君 | Absorbent charcoal special for electrical condenser manufactured with hard husk |
| CN101428794A (en) * | 2008-12-01 | 2009-05-13 | 海南大学 | Preparation of coir fiber based activated carbon with high specific surface area |
| CN201309830Y (en) * | 2008-10-06 | 2009-09-16 | 贺德留 | Liner type rotary carbonization and activation furnace utilizing chemical method to manufacture activated carbon |
| CN101648707A (en) * | 2009-08-27 | 2010-02-17 | 南京林业大学 | Preparation method of activated carbon with high pore volume |
-
2011
- 2011-12-23 CN CN2011104359946A patent/CN102765718A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096274A (en) * | 1993-11-26 | 1994-12-14 | 贺德留 | Technology for producing wood amorphous granular active carbon by chemical method |
| CN101343058A (en) * | 2007-07-13 | 2009-01-14 | 李国君 | Absorbent charcoal special for electrical condenser manufactured with hard husk |
| CN201309830Y (en) * | 2008-10-06 | 2009-09-16 | 贺德留 | Liner type rotary carbonization and activation furnace utilizing chemical method to manufacture activated carbon |
| CN101428794A (en) * | 2008-12-01 | 2009-05-13 | 海南大学 | Preparation of coir fiber based activated carbon with high specific surface area |
| CN101648707A (en) * | 2009-08-27 | 2010-02-17 | 南京林业大学 | Preparation method of activated carbon with high pore volume |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101910A (en) * | 2012-11-13 | 2013-05-15 | 苏州谷力生物科技有限公司 | Preparation method of active carbon using tea residue |
| CN105271220A (en) * | 2015-09-30 | 2016-01-27 | 江苏通瑞环保科技发展有限公司 | Method for preparing activated carbon by utilization of crop straw |
| CN106495149A (en) * | 2016-11-18 | 2017-03-15 | 刘春明 | The technique that a kind of biomass prepare high absorption property activated carbon |
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Application publication date: 20121107 |