CN103896266A - Method for producing coal and wood mixed solvent recovery active carbon - Google Patents
Method for producing coal and wood mixed solvent recovery active carbon Download PDFInfo
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- CN103896266A CN103896266A CN201410161550.1A CN201410161550A CN103896266A CN 103896266 A CN103896266 A CN 103896266A CN 201410161550 A CN201410161550 A CN 201410161550A CN 103896266 A CN103896266 A CN 103896266A
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Abstract
The invention discloses a method for producing coal and wood mixed solvent recovery active carbon. The method comprises the steps of selecting raw materials, stirring, drying in air, charring, screening, activating, screening and packing for processing the coal and wood mixed solvent recovery active carbon. The method has the advantages that the active carbon produced by the method can effectively adsorb macromolecules and molecular group impurities and achieve maximum adsorption effect, the service life of the active carbon after being used for multiple times is prolonged, and the production cost is reduced.
Description
Technical field
The present invention relates to solvent recuperation Activated Carbon Production field, be specifically related to a kind of production method of coal wood mixed type solvent recuperation gac.
Background technology
The history that gac carries out solvent recuperation at chemical industry, petrochemical industry, light industry can be traced back to eighties of last century the forties, and the widespread use of China's solvent recuperation gac starts from eighties of last century the eighties.Past is mainly squeezed into column or spherical with low grey fine coal coal tar, pitch, makes through Physical activation.This technique is still at present that the main flow of solvent recuperation is selected.And depend on, this explained hereafter gac out cannot adsorb some macromole impurity, the repeatedly life-span of product reduction in use procedure itself, production cost is relatively high, absorption property is single, uncontrollable, to be difficult to meet economy and environmental protection requirement.
Summary of the invention
The object of the invention is to: for overcoming the above problems the production method that a kind of coal wood mixed type solvent recuperation gac is provided, the gac that Using such method is produced can active adsorption macromole and molecular grouping impurity, reach the maximization of adsorption effect, in the work-ing life that extends activated carbon product itself, reduce production costs.
The technical solution adopted in the present invention is such:
A production method for coal wood mixed type solvent recuperation gac, it comprises the steps:
(1) select materials: clean fine coal and hardwood wood activated charcoal are obtained to coal raw material and wood activated charcoal raw material by pickling, alkali cleaning, screening, oven dry;
(2) spice: coal raw material in step (1) and wood activated charcoal raw material are added to agitator kettle in proportion, add coal tar and water, fully mix;
(3) air-dry: carry out press strip by stirring the compound obtaining in step (2), naturally dry air-dryly after press strip, air-dry time is 7～9 hours;
(4) charing: the compound after step (3) apoplexy is made a good job of adds charing in charring furnace, and carbonization time is 30～40min, controls charring furnace end flue temperature at 620～680 ℃, and stove tail temperature is at 130～170 ℃;
(5) screening: the carbonized material obtaining in step (4) is tentatively sieved by standard;
(6) activation: the carbonized material that charing in step (5) is sieved is directly sent into activation furnace from furnace roof portion, and soak time is controlled at 72 ± 0.5h, and activation temperature is controlled at 900～940 ℃;
(7) screening packing: the material having activated in step (6) is sieved again by standard, and after screening is good, packing obtains finished product.
Further, the grey wind content of clean fine coal described in step (1) is 3%～8%.
Further, the air-dry rear abrasive dust of clean fine coal described in step (1), granularity is that 200 orders pass through 85%-90%.
Further, wood activated charcoal described in step (1), can be activated material, can be also carbonized material, and its iodine number is greater than 500mg/g.
Further, described in step (2), the content of coal tar medium pitch fat is not less than 60%.
Further, control charring furnace end flue temperature at 640～660 ℃ in step (4), stove tail temperature is at 140～160 ℃.
Further, in step (6), be to control activation temperature and soak time by controlling quantity of steam and amount of oxygen.
In sum, the beneficial effect that the relative prior art of the present invention has is:
1, produced according to the invention go out gac combine the due macropore distribution character of wood activated charcoal, solve in molecular complex in actual adsorption process and gas with macromole and the absorption of molecular grouping impurity, increase work-ing life of activated carbon product in repeatedly use procedure itself.
2, the gac of producing by the method is the pure wood activated charcoal of high price relatively, reduces costs, and improves the operating pressure of efforts at environmental protection itself.
3, with regard to production technology itself, the gac of producing by the inventive method can carry out according to customer demand the variation of temperature and quantity of steam and time length, control the aperture structure of gac own and distribute, reach as far as possible the maximization of adsorption effect.
Embodiment
A production method for coal wood mixed type solvent recuperation gac, it comprises the steps:
(1) select materials: clean fine coal and hardwood wood activated charcoal are obtained to coal raw material and wood activated charcoal raw material by pickling, alkali cleaning, screening, oven dry; The grey wind content of described clean fine coal is 3%～8%, and its grey wind determines the ash content height of finished product; The air-dry rear abrasive dust of described clean fine coal, granularity is that 200 orders pass through 85%-90%; Described wood activated charcoal, it can be activated material, also can be carbonized material, must guarantee the point of ignition of this wooden part, therefore activated material the best of chemical method, must guarantee that its iodine number is greater than 500mg/g, equally after re-activation, to strengthen its pore size distribution, reach the prosperity of mesopore in result of use and micropore.
(2) spice: coal raw material in step (1) and wood activated charcoal raw material are added to agitator kettle in proportion, add coal tar and water, fully mix; The coal tar of selecting, its pitch fat content can not be lower than 60%, otherwise easily causes the strength decreased of finished product, and can produce minute crack;
(3) air-dry: carry out press strip by stirring the compound obtaining in step (2), the particle diameter of press strip can be selected voluntarily, after press strip, naturally dry air-dryly, air-dry time is 7～9 hours;
(4) charing: the compound after step (3) apoplexy is made a good job of adds charing in charring furnace, and carbonization time is 30～40min, controls charring furnace end flue temperature at 620～680 ℃, and stove tail temperature is at 130～170 ℃; Control charring furnace end flue temperature at 640～660 ℃, stove tail temperature is preferred temperature scope at 140～160 ℃;
(5) screening: the carbonized material obtaining in step (4) is tentatively sieved by standard, guarantee into the granularity control of activation furnace within the specific limits;
(6) activation: the carbonized material that charing in step (5) is sieved is directly sent into activation furnace from furnace roof portion, soak time is controlled at 72 ± 0.5h, activation temperature is controlled at 900～940 ℃, controls activation temperature and soak time by controlling quantity of steam and amount of oxygen; Activated partial divides preheating section, activation section and cooling section, and wherein activation section is the key component that guarantees the final quality of charcoal, must, by controlling temperature and the time of activation section, guarantee pore size distribution and the intensity of gac;
(7) screening packing: the material having activated in step (6) is sieved again by standard, and after screening is good, packing obtains finished product.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (7)
1. a production method for coal wood mixed type solvent recuperation gac, is characterized in that: it comprises the steps:
(1) select materials: clean fine coal and hardwood wood activated charcoal are obtained to coal raw material and wood activated charcoal raw material by pickling, alkali cleaning, screening, oven dry;
(2) spice: coal raw material in step (1) and wood activated charcoal raw material are added to agitator kettle in proportion, add coal tar and water, fully mix;
(3) air-dry: carry out press strip by stirring the compound obtaining in step (2), naturally dry air-dryly after press strip, air-dry time is 7～9 hours;
(4) charing: the compound after step (3) apoplexy is made a good job of adds charing in charring furnace, and carbonization time is 30～40min, controls charring furnace end flue temperature at 620～680 ℃, and stove tail temperature is at 130～170 ℃;
(5) screening: the carbonized material obtaining in step (4) is tentatively sieved by standard;
(6) activation: the carbonized material that charing in step (5) is sieved is directly sent into activation furnace from furnace roof portion, and soak time is controlled at 72 ± 0.5h, and activation temperature is controlled at 900～940 ℃;
(7) screening packing: the material having activated in step (6) is sieved again by standard, and after screening is good, packing obtains finished product.
2. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: the grey wind content of clean fine coal described in step (1) is 3%～8%.
3. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: the air-dry rear abrasive dust of clean fine coal described in step (1), granularity is that 200 orders pass through 85%-90%.
4. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: wood activated charcoal described in step (1) can be activated material, can be also carbonized material, and its iodine number is greater than 500mg/g.
5. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: described in step (2), the content of coal tar medium pitch fat is not less than 60%.
6. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: in step (4), control charring furnace end flue temperature at 640～660 ℃, stove tail temperature is at 140～160 ℃.
7. the production method of a kind of coal wood mixed type solvent recuperation gac according to claim 1, is characterized in that: in step (6), be to control activation temperature and soak time by controlling quantity of steam and amount of oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161550.1A CN103896266A (en) | 2014-04-21 | 2014-04-21 | Method for producing coal and wood mixed solvent recovery active carbon |
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| CN201410161550.1A CN103896266A (en) | 2014-04-21 | 2014-04-21 | Method for producing coal and wood mixed solvent recovery active carbon |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189453A (en) * | 1997-01-28 | 1998-08-05 | 新疆石油管理局独山子石油化工总厂 | Petroleum asphalt based active carbon and its prepn. method |
| CN1815007A (en) * | 2005-02-02 | 2006-08-09 | 可乐丽化学株式会社 | Activated carbon and method for producing same |
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2014
- 2014-04-21 CN CN201410161550.1A patent/CN103896266A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189453A (en) * | 1997-01-28 | 1998-08-05 | 新疆石油管理局独山子石油化工总厂 | Petroleum asphalt based active carbon and its prepn. method |
| CN1815007A (en) * | 2005-02-02 | 2006-08-09 | 可乐丽化学株式会社 | Activated carbon and method for producing same |
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Application publication date: 20140702 |