CN1011690B - Active carbon fluid discharge drying method and unit thereof - Google Patents
Active carbon fluid discharge drying method and unit thereofInfo
- Publication number
- CN1011690B CN1011690B CN89106795A CN89106795A CN1011690B CN 1011690 B CN1011690 B CN 1011690B CN 89106795 A CN89106795 A CN 89106795A CN 89106795 A CN89106795 A CN 89106795A CN 1011690 B CN1011690 B CN 1011690B
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- China
- Prior art keywords
- fluidized
- bed
- carbon granule
- drying method
- drying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Carbon And Carbon Compounds (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a drying method for activated carbon fluidization by electric discharge and a device thereof. Used activated carbon is continuously sent onto a fluidized bed provided with an electrode; the air in the state of room temperature is sent to a carbon granule layer by an air distribution plate from bottom to top and performs electric discharge to the fluidized activated carbon so that carbon granules are dried. Compared with the present hot air drying method with a fluidized bed and a device, the drying method and the device have heat efficiency improved by 1 time, drying efficiency improved by 3.5 times and energy consumption reduction and are especially suitable for drying treatment for eliminating liquid in conductive solid granule materials.
Description
The invention belongs to isolation technique or dry technology, particularly from the solids material that can conduct electricity, eliminate the drying of liquid.
Gac is for toxin, objectionable impurities, heavy metal, pigment, have excellent adsorption, and safe and reliable when using, therefore active carbon absorption technology is used for the deep purifying of tap water, the harmless treatment of waste water, waste gas is as the main means of control pollution.Yet the gac price is higher, need carry out manipulation of regeneration, to reuse.
One of renovation process of gac is the heat method of reproduction, generally needs through high temperature drying, roasting, activation three phases, and the recovery time needs 0.5-6 hour.
The present invention be to the inventor in the development of the patent " exhausted gac forced electric discharge reactivating method and device " (patent No. 85100619) of on April 2nd, 1985 application with replenish.This invention is to adopt the method for forced electric discharge to produce heat, 850 ℃ of regeneration temperatures, and the recovery time only needs 5～10 minutes, and drying, roasting, activation three phases are once finished.
But, gac, particularly water treatment charcoal, dehydration property is poor, and regeneration is gone to toward having a large amount of attached waters and planar water.If the moisture content of drying base of wet charcoal is 76%, then the energy consumption for drying of regenerative process will account for 75～80% of whole regeneration of activated carbon energy consumption, simultaneously, when continuously feeding, planar water excessive in the gac easily causes carbon granule to bond mutually under rapid intensification condition, influences carrying out smoothly of regenerative process.Therefore, it is necessary wet charcoal to be carried out efficient pre-dried.
To the drying of gac, present reasonable method is the fluidized drying method, and usual means is horizontal multi-cell fluidized bed.Promptly make drying medium, feed fluidized-bed, gac is carried out drying treatment with 200 ℃ of warm airs.Advantages such as it is bigger to have heat capacity coefficient, and the residence time can be regulated, and is even to dry materials, easy to operate, but the equipment configuration build is big, and charcoal loss height is because the gac poor thermal conductivity causes heating efficiency low, have only about 40%, time of drying is also longer, generally needs one hour.
The objective of the invention is under carbon granule fluidization condition, carbon granule to be discharged, make the whole intensification of carbon granule, discharge excessive planar water, meet the requirements of ridity, and avoid the carbon granule bonding.
Active carbon fluid discharge drying method of the present invention is that the exhausted gac is continuously delivered on the fluidized-bed, and the air under the normal temperature state is sent into the carbon granule layer by air distribution plate from bottom to top, makes carbon granule be flow-like; On the carbon granule fluidized-bed electrode is set, the control energy discharges to carbon granule, utilize electroconductibility, the self-resistance of gac and be in contact with one another resistance to produce joule heating, the carbon granule bulk temperature is risen, carbon granule internal adsorption water promptly flashes to steam state and discharges, take away by air, make the carbon granule drying.
Active carbon fluid discharge drying installation of the present invention is made up of the fluidized-bed that electrode is set, air distribution plate, gas inlet chamber, feeding machine, and fluidized-bed is a rectangular box, and bottom level is provided with the porous air distribution plate, and the air distribution plate below is a gas inlet chamber; Fluidized-bed side top is provided with electromagnetic feeder, and the opposite side below is a discharge port; The fluidized-bed top is provided with vapor pipe.It is characterized in that, parallel electrode plate is set in fluidized-bed, it is vertically parallel with the length direction of bed wall, positive and negative pole plate is provided with at interval, the power supply of electrical control cubicles adopts 380 volts of alternating-current of three-dimensional, transformation is connected with corresponding positive and negative pole plate in lead and the fluidized-bed after the controllable electric power of rectification is exported positive and negative the two poles of the earth (or adopt 220 volts of one-way communication electricity, through the power supply of Regulation Control).Doing with normal temperature air under the fluidization conditions of drying medium, the control energy, to the carbon granule discharge, the carbon granule bulk temperature rises rapidly, can discharge planar water and meet the requirements of ridity; On the porous air distribution plate, be provided with screen cloth, can improve the gas distribution homogeneity and prevent that particle from dropping.
The present invention adopts fluid discharge drying method and device, compares with existing fluid bed heat airing and device, and following advantage is arranged:
Adopt discharge means to make the inner intensification of carbon granule, improved thermo-efficiency.During as horizontal multi-cell fluidized bed dry activated carbon, 200 ℃ of inlet air temperature, exhaust temperature reaches 100 ℃, and thermo-efficiency has only 40～45%; Air inlet of the present invention is 20 ℃ of air of normal temperature, and exhaust temperature is 38～40 ℃, and thermo-efficiency reaches 98%.
Improved drying efficiency, the fluidized drying gac needs 1 hour usually, and the present invention only needs 17 minutes, dry basis moisture content 76% can be reduced to 10%, improves 3.5 times of drying efficiencies.
Reduced energy consumption, dry total energy consumption of the present invention is 0.19～0.22kwh/kgAC, only is 15% of horizontal multicompartment fluidized bed dryer energy consumption.
The present invention has following function: carbon granule internal adsorption instant water is by electrolysis, and the oxygen of generation has oxidizing reaction to adsorptive; The ultraviolet ray that discharge forms makes that airborne oxygen partly produces ozone between carbon granule, to the adsorptive oxidation of discharging.The present invention also can be used for the drying process in the gac manufacturing processed.
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is active carbon fluid discharge drying method and setting drawing.
Fig. 2 is that the pole plate of active carbon fluid discharge drying method and device is connected orthographic plan with power supply.
From scheming as seen, drying installation is the box fluidized-bed of a rectangle, the bottom is a porous air distribution plate 1, establish screen cloth 2 on the air distribution plate, air distribution plate below is a gas inlet chamber 3, and the more gac of water content enters fluidized-bed by electromagnetic feeder 4 place's continuous flow rates, parallel electrode plate 6 is set in fluidized-bed, and pole plate produces electric field by electrical control cubicles 7 supply powers.Air then by strainer 8, is sent into gas inlet chamber 3 by gas blower 9, and the waste gas after the gac drying treatment is then discharged by the vapor pipe at fluidized-bed top, is connected to tornado dust collector 10 and sack cleaner 11 on the vapor pipe, the powdered carbon in the waste gas can be filtered.Gac through drying treatment is then discharged fluidized-bed by discharge port 5.
Claims (3)
1, a kind of active carbon fluid discharge drying method is that the exhausted gac is continuously delivered on the fluidized-bed, and the air under the normal temperature state is sent into the carbon granule layer by air distribution plate from bottom to top, makes carbon granule be flow-like; On the carbon granule fluidized-bed parallel pole is set, the control energy to the carbon granule discharge, makes carbon granule produce joule heating, and bulk temperature rises, and carbon granule internal adsorption water i.e. evaporation rapidly, is taken away by air, makes the carbon granule drying.
2, the used device of fluid discharge drying method as claimed in claim 1, form by fluidized-bed, air distribution plate, gas inlet chamber, feeding machine, vapor pipe, gas blower, discharge port, it is characterized in that in fluidized-bed, being provided with parallel electrode plate, it is vertically parallel with the length direction of bed wall, positive and negative pole plate is provided with at interval, the power supply of electrical control cubicles adopts 380 volts of alternating-current of three-dimensional, transformation is after the controllable electric power of rectification is exported positive and negative the two poles of the earth, be connected with corresponding positive and negative pole plate in the fluidized-bed with lead, on the porous fabrics plate, be provided with screen cloth.
3, the used device of fluid discharge drying method as claimed in claim 2 is characterized in that electrical control cubicles adopts 220 volts of one-way communication electricity, through the power supply of Regulation Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89106795A CN1011690B (en) | 1989-09-07 | 1989-09-07 | Active carbon fluid discharge drying method and unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89106795A CN1011690B (en) | 1989-09-07 | 1989-09-07 | Active carbon fluid discharge drying method and unit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039364A CN1039364A (en) | 1990-02-07 |
| CN1011690B true CN1011690B (en) | 1991-02-20 |
Family
ID=4856871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89106795A Expired CN1011690B (en) | 1989-09-07 | 1989-09-07 | Active carbon fluid discharge drying method and unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011690B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990422A (en) * | 2013-02-16 | 2014-08-20 | 江苏中能硅业科技发展有限公司 | Fluidized bed reactor and method for preparing granular polysilicon and trichlorosilane by employing same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111325B (en) * | 2011-11-16 | 2015-03-11 | 上海浦景化工技术股份有限公司 | Process for synthesizing vinyl acetate catalyst through acetylene method |
| CN103447083A (en) * | 2012-05-31 | 2013-12-18 | 冯良荣 | Catalyst for acetylene-method synthesis of vinyl acetate and preparation method thereof |
| CN103447084A (en) * | 2012-05-31 | 2013-12-18 | 冯良荣 | Catalyst for acetylene-method synthesis of vinyl acetate and preparation method thereof |
| CN103506070A (en) * | 2012-06-19 | 2014-01-15 | 冯良荣 | Preparation method of copper loaded activated carbon adsorbent |
-
1989
- 1989-09-07 CN CN89106795A patent/CN1011690B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990422A (en) * | 2013-02-16 | 2014-08-20 | 江苏中能硅业科技发展有限公司 | Fluidized bed reactor and method for preparing granular polysilicon and trichlorosilane by employing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039364A (en) | 1990-02-07 |
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