CN101139093A - Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal - Google Patents
Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal Download PDFInfo
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- CN101139093A CN101139093A CNA2007100697684A CN200710069768A CN101139093A CN 101139093 A CN101139093 A CN 101139093A CN A2007100697684 A CNA2007100697684 A CN A2007100697684A CN 200710069768 A CN200710069768 A CN 200710069768A CN 101139093 A CN101139093 A CN 101139093A
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Abstract
The invention belongs to the technology field of chemical method wooden power activated carbon, in particular relates to the method to activatedly produce wooden power active carbon consisting of a carbonization segment and an external heated moving bed activation segment which consists of 3 grades of fluidized drying, fluidized plasticization and fluidized carbonization with the phosphoric acid or the zinc chloride as an activating agent. And a pulse fluidization dryer, a plasticization device, a carbonization device and an external heated roller rotating activation furnace suitable for the carbonization segment are designed. The invention has a high heat utilization ratio. One ton of active carbon consumes less than one ton of coal; the consumption of the phosphoric acid or the zinc chloride is very low and one ton of active carbon consumes less than 0.18 ton of acid; the invention has a high mechanization degree and a high productivity and the active carbon output of each person is seven times larger thana flattening furnace. The invention also has the advantages of low device cost, long service life and no pollution. The pollution source is eliminated during the manufacturing art.
Description
Affiliated technical field:
The invention belongs to chemical legal system wood powder shaped activated carbon technical field, particularly about fluidized drying, fluidization plasticizing, fluidized carbonization, moving-bed activation, make the method for wood powder shaped activated carbon with activator activation, and fluidized drying device, fluidization plasticiser, fluidized carbonization device, moving-bed the activation furnace charing, the activation equipment that constitute.
Background technology:
Produce existing most production units such as flattening oven, external-heat cylinder revolving activation furnace and internal heat type cylinder revolving activation furnace that adopt at industrial chemical method wood powder shaped activated carbon.Flattening oven refractory slab indirect heating, heat exchanger effectiveness is very low, and a large amount of heat energy are from exhaust emissions, and gac consumption coal per ton is more than 2.2 tons; The activation furnace open area is very big, (18m * 2m=36m
2) the very difficult recycling of waste gas, seriously polluted; Hand feed, stirring, discharging, labour intensity is big, and environment is abominable; The stainless steel manufacturing of external-heat cylinder rotary kiln, the cost height is 2 times of flattening oven; Combustion chamber and quirk are very short, and heat energy can not make full use of, and exhaust temperature is up to 360-480 ℃; Gap operating, furnace wall temperature is subjected to the rapid cooling of raw material up to more than 900 ℃ during discharging when reinforced, the yielding and surface corrosion of body of heater; Discharging and input speed are slow, and the empty stove time accounts for 25% of working time, and production efficiency is on the low side; Internal heat type cylinder activation furnace, burning gas and material adverse current Direct Contact Heating, the volatilization loss of activator zinc chloride or phosphoric acid is many especially, and gac consumption zinc chloride per ton or phosphoric acid are more than the 0.3-0.35 ton; Body of heater reaches 28 meters, 1.5 meters of diameters, and inner lining refractory block weighs more than 100 tons certainly, and drive-motor reaches more than 36 kilowatts, and power consumption is higher; Exhausted air quantity is big, and the activator of carrying secretly (zinc chloride or phosphoric acid) is aerosol state, administers relatively difficulty.
Summary of the invention:
The invention provides a kind of chemical method and make new carbonization-activation method and the corresponding apparatus thereof of wood powder shaped activated carbon.Concrete scheme is:
The wood chip material of dipping activator (zinc chloride or phosphoric acid), make gac through fluidized drying, fluidization plasticizing, fluidized carbonization and moving-bed activation, with the activation furnace combustion tail gas with contain waste gas that activator wood chip material activating produces as the fluidizing medium of fluidized carbonization, fluidization plasticizing, fluidized drying with to containing the heating medium of activator wood chip material, the direct heating material.Tail gas, waste gas are opposite with the flow direction of material generally, are fluidized state.Activation furnace combustion tail gas and waste gas are in charing equipment, piecemeal material is carried out fluidized carbonization, fluidization plasticizing and fluidized drying, tail gas and spent air temperture constantly reduce, in the final stage of tail gas and waste gas operation is material heat drying to normal temperature, therefore whole production process tail gas exhaust temperature is very low, the heat energy utilization fullest is saved a large amount of fuel; When activation, produce the waste gas of a small amount of activator (zinc chloride, hydrogenchloride or phosphoric acid steam) of carrying secretly, when fluidized carbonization, fluidization plasticizing and fluidized drying direct heating material,, source of pollution are eliminated among production technique by material fractional condensation, absorption and purification.
Fluidized carbonization divides three sections to carry out: first section is the drying unit of material, and second section is the plasticization unit of material, and the 3rd section is the charing unit of material.Flow direction of material from first section through second section to the 3rd section, leave charing equipment from the 3rd section discharge port; Hot gas flow and the material countercurrent flow of heating usefulness, from the 3rd section through second section to first section, from first section venting port discharge charing equipment.The temperature distribution of air-flow reduces piecemeal from the 3rd section to first section, 400 ℃ of the 3rd section inlet temperatures, and 230 ℃ of second section inlet temperatures, 150 ℃ of first section inlet temperatures have been reduced to below 70 ℃ from the temperature of system's combustion gas.Temperature of charge raises piecemeal from first section to the 3rd section, and first section outlet is below 100 ℃, and second section exports 150 ℃, and the 3rd section exports about 200 ℃.
The drum-type revolving activation furnace that the moving-bed activation furnace is made by stainless steel, material moves forward in cylinder inside, and the cylinder outside is the combustion chamber.Cylinder constantly raises along material working direction furnace wall and internal temperature, and temperature of charge also improves constantly to the top temperature of the hot spots of combustion chamber, as long as guarantee the top temperature section suitable temperature and enough time is arranged, and just can produce qualified gac.Because of the waste gas that produces in activation furnace incendiary tail gas and the reactivation process will be used as charing thermal source partly, the height that therefore activates exhaust temperature can not cause the increase of coal consumption.
In order to implement the scheme of the inventive method, designed the equipment that adapts with it.Equipment scheme of the present invention is by shown in Figure 1.Be divided into charing and activation two portions.Charing part is by pulsed fluidized drying device (I), pulsed fluidization plasticiser (II) formation of connecting with pulsed fluidized carbonization device (III).Activated partial (IV) is the continuous cylinder rotary kiln of external-heat.The charing part constitutes production line with the equipment generalized case The combined of activated partial, but also can use separately separately, and new Activated Carbon Production line is formed in the use that perhaps matches with the activation furnace of other type.
Description of drawings:
Principle and corresponding apparatus structure thereof for the ease of understanding the inventive method are described in detail in conjunction with the accompanying drawings.
Fig. 1. fluidized carbonization moving bed activation equipment schema.
Fig. 2. fluidized carbonization unit equipment synoptic diagram.
Fig. 3. moving-bed activation furnace synoptic diagram.
Among the figure: I. fluidized drying device elementary section, II. fluidization plasticiser elementary section, III. fluidized carbonization device elementary section, IV. activation furnace elementary section, 1. induced draft fan, 2. raw material screw feeder, 3. carbon activation furnace waste gas exhaust pipe, 31. the charring furnace inlet pipe, 41. activation furnace screw feeders, 43. activation Waste gas outlets, 49. finished product discharge port, 48 activation temperature proofing units, the 51. burner hearths mouth that makes a fire, 53. activation furnace combustion tail gas discharge outlets.
Fluidized carbonization as shown in Figure 1, moving bed activating of chemical legal wood powdered activated carbon are given birth to Product equipment is by the 1st section fluidized drying elementary section (I), the 2nd section fluidization plasticiser unit Charing section and activation that section (II), the 3rd section fluidized carbonization device elementary section (III) series connection consist of Section (IV) forms. Raw material enter the 1st section fluidisation by the self-conveyor feed 2 that can regulate charging rate Drying unit charge door 12, the tail gas after the 2nd section fluidised form plasticization unit section used does the 1st The thermal source of section fluidised form drying unit section is entered by blast pipe 11, and thermal current and material are in pipeline Mix, finish heat exchange through pulse drier 14, finish the drying of material after, by cyclonic separation It is separated from the gas with material that device air inlet 15 enters cyclone separator 18. Gas is by cyclone separator Suitable for reading 17 discharge, and material is from the cyclone separator end opening through auger conveyor 20, by charge door 22 Add the 2nd section fluidization plasticization unit section; In the 2nd section fluidization plasticization unit section, thermal current From the tail gas of the 3rd section fluidized carbonization elementary section, auger conveyor send here through the 1st section fluidised form Change material, its temperature of charge and the 1st section fluidized drying elementary section tail gas of drying unit section drying Temperature is consistent, but far below the 3rd section fluidized carbonization elementary section that is entered by intake stack 21 Exhaust temperature, material and gas are mixed into fluidization plasticiser 24 through sufficient heat exchange, material Plastify, enter cyclone separator 28 and separate, gas is by cyclone separator 27 rows suitable for reading Enter the 1st section fluidized drying elementary section blast pipe 11, material from the cyclone separator end opening through spiral transferring Send device 30 to discharge, add the 3rd section fluidized carbonization elementary section charing by charge door 32 again; In 3 sections fluidized carbonization elementary sections, the material of drying and plasticizing is added by charging aperture 32; Air intake It is single that the waste gas that pipe 31 produces activation section combustion tail gas and when activation is introduced the 3rd section fluidized carbonization In unit's section, both mix, and in pulsed asher 34 interior sufficient heat exchange, it is laggard to finish charing Enter cyclone separator 38 and separate, gas enters the 2nd section fluidised form by cyclone separator suitable for reading 37 Change plasticization unit section blast pipe 21, the charing material is arranged through the star discharger from the cyclone separator end opening Go out; Carbonized material adds the revolution of external-heat moving bed cylinder with the screw feeder that can regulate charging rate Activation furnace, in the cylinder revolving activation furnace, the material layer that falls from low-temperature end to temperature end is mobile, at thing Activation temperature is detected at the discharging opening place 48 that material is about to discharging, regulates the activation charging rate, adjusts and burn The fire temperature is guaranteed that material reaches suitable activation temperature, thereby is obtained qualified active carbon.
Accompanying drawing 2 is carbonization device elementary section structural representation, and the present invention is by the list of three different temperatures Unit's section forms carbonization device. There is blast pipe 11 (21,31) each unit, charging aperture 12 (22, 32), two clear quarrel mouthful 13 (23,33), pulsed fluidized drying device (plasticiser, asher) 14 (24,34), cyclone separator 18 (28,38), temperature-detecting device 16 (26,36), Lock wind discharger (star discharger or auger conveyor) 20 compositions such as (30,40). Material from Add before the one half bend of every unit, its objective is that the gravity that utilizes material is when mixing with hot blast Can produce initial momentum, more be conducive to be carried secretly by hot blast, enter pulsed fluidized drying device and (mould Change device, asher), air-introduced machine has enough suction that material is taken away, and the sandstone in the material etc. Impurity is big because of density, can not be taken away and sink to by wind in the clear quarrel mouth 13 of evagination, by periodic cleaning. Mist enters pulsed fluidized drying device (plasticiser, asher), because the straight warp of pipeline Become big, air velocity diminishes, and the material that the little density of particle is little absorbs heat in the hot blast course of conveying The volatilization of water gaging part is directly brought into cyclone separator by air-flow, and the big material of the big density of particle is subjected to gravity With two Action of Gravity Fields of gas entrainment force, absorbing heat when moving up and down, moisture evaporation is heavy Quantitative change is little, and the quickening that moves upward is finally taken out of drier and entered cyclone separator. At the whirlwind branch Locate from device air inlet 15 (25,35), temperature-detecting device 16 (26,36) is installed just can be straight Connect drying, plasticizing and the degree of carbonization of observing material, reach the control charing by adjusting charging rate The purpose of degree.
In order to reduce the cost of equipment, whole carbonization device is done shell with carbon steel, inwall casting heatproof The nonmetal casting clay of wear-and corrosion-resistant. Only has seldom amount position that casting material can't construct with stainless Steel makes the cost of whole carbonization device descend 60%.
Embodiment:
Through overtesting, what this test was produced is phosphoric acid method wood activated charcoal in test unit in the present invention, the liquid-solid ratio of the wood chip of impregnation of phosphoric acid 4: 1,75 ℃ of first section drying temperatures, 140 ℃ of second section temperature, 210 ℃ of the 3rd section temperature.Temperature of charge is 430 ℃ in 580 ℃ of the activation furnace bore temperatures, stove, produces 3.8 tons of gacs in 24 hours, 3.2 tons in consumption coal, phosphoric acid consumption 2%, 13 milliliters of finished product gac methylenum coeruleum decolorizing abilities, caramel decolouring 125%.This tests total specified power is 15.2 kilowatts.Per tour 2 people operation.
Beneficial effect:
The invention has the beneficial effects as follows:
1. heat utilization rate height. Utilize the tail gas of activation furnace burning and the waste gas of activation generation to make fluidised form Change the thermal source of carbonization device, thermal current and material adverse current after 3 sections fluidization heat exchanges, the tail gas temperature Degree drops to just discharging below 70 ℃. One ton of active carbon consumption is marked one ton of coal less than.
2. phosphoric acid or zinc chloride consume low. Drying unit section, plasticization unit section, charing elementary section Temperature of charge is respectively 100 ℃, 150 ℃, 200 ℃, can not cause phosphoric acid or chlorine under this temperature Change the zinc volatilization; Activation section is indirect, and phosphoric acid or zinc chloride amount of vaporization are few, even have a small amount of Volatilization is again by the fractional condensation of charing section material, absorption. So it is low that activator phosphoric acid or zinc chloride consume, no Surpass 2%.
3. mechanization degree height. Be added to activated material from material and discharge full mechanization. Only need 2 The people keeps an eye on. The output of active carbon is 7 times of flattening oven per capita.
4. equipment manufacturing cost is low, long service life.
5. there is not environmental pollution.Just discharging after burning gas tail gas is absorbed, purifies by 3 sections fluidizations of charing material with the waste gas that activates generation disappears the source except that among production technique with pollution.
Claims (9)
1. the present invention is a kind of method of making the wood powder shaped activated carbon with the activator activation.It is characterized by: contain activator wood chip material and make gac through fluidized drying, fluidization plasticizing, fluidized carbonization and moving-bed activation, with activation furnace combustion tail gas and the waste gas that contains the generation of activator wood chip material activating as the fluidizing medium of fluidized carbonization, fluidization plasticizing, fluidized drying with to containing the heating medium of activator wood chip material.Contain the absorption cleaning medium of the wood chip streams of activator as zinc chloride, hydrogenchloride or phosphoric acid steam source of pollution in the activation waste gas.
2. the described flow direction of material of claim 1 is characterized by: contain the wood chip Flow of Goods and Materials direction of activator, flow through the fluidization fluxing zone to the fluidized carbonization section from the fluidized drying section.
3. the described activation furnace combustion tail gas of claim 1 and contain the flow direction of the waste gas that activator wood chip material activating produces, it is characterized in that: air flow line is generally with to contain activator wood chip Flow of Goods and Materials direction opposite, be the adverse current state, flow through the fluidization fluxing zone to the fluidized drying section from the fluidized carbonization section.
4. the present invention is a kind of equipment with activator activation manufacturing wood powder shaped activated carbon, it is characterized by: comprise charing equipment and external-heat moving-bed activation furnace that fluidized drying device, fluidization plasticiser, fluidized carbonization device are formed.Charing equipment is made with the nonmetal casting clay of carbon steel sheet liner.
5. the pulsed fluidized drying device in the described charing equipment of claim 4 is characterized by: comprise blast pipe 11, opening for feed 12, pulsed fluidized drying device 14, cyclonic separator 18, screw feeder 2, slag removing hole 13, temperature-detecting device 16 and lock wind apparatus (spiral conveyer) 20.
6. the fluidization plasticiser in the described charing equipment of claim 4 is characterized by: comprise blast pipe 21, opening for feed 22, pulsed fluidization plasticiser 24, cyclonic separator 28, screw feeder 20, slag removing hole 23, temperature-detecting device 26 and lock wind apparatus (spiral conveyer) 30.
7. the fluidized carbonization device in the described charing equipment of claim 4 is characterized by: comprise blast pipe 31, opening for feed 32, pulsed fluidization plasticiser 34, cyclonic separator 38, screw feeder 30, slag removing hole 33, temperature-detecting device 36 and lock wind apparatus (star discharger) 40.
8. the nonmetal clay of casting during the described charing of claim 4 is established is characterized by: the etch-proof nonmetal clay of inner surface lining one deck heat-resistant, wear-resistant.
9. the described external-heat moving-bed of claim 4 activation furnace is characterized by: comprise external-heat cylinder revolving activation furnace 45, and adjustable speed screw feeder 41, reinforced-extraction hood 42, drive unit 44, support roller and raceway circle 46, discharging cover 47, temperature-detecting device 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697684A CN101139093A (en) | 2007-07-03 | 2007-07-03 | Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697684A CN101139093A (en) | 2007-07-03 | 2007-07-03 | Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal |
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| CN101139093A true CN101139093A (en) | 2008-03-12 |
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| CNA2007100697684A Pending CN101139093A (en) | 2007-07-03 | 2007-07-03 | Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466614A (en) * | 2013-08-23 | 2013-12-25 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN103570017A (en) * | 2013-11-27 | 2014-02-12 | 董寅生 | Carbonization-activation continuous production integrative furnace for phosphoric acid method shell granular active carbons |
| CN103922338A (en) * | 2014-04-15 | 2014-07-16 | 浙江省林业科学研究院 | Granulating method and equipment for producing granular activated carbon without additional binding agent |
| CN106765205A (en) * | 2016-12-29 | 2017-05-31 | 安徽今朝环保科技有限公司 | A kind of abraum salt drying and incinerating purifier based on injection rotary drying |
| CN106765204A (en) * | 2016-12-29 | 2017-05-31 | 安徽今朝环保科技有限公司 | A kind of abraum salt annealing device |
| CN106823677A (en) * | 2017-03-26 | 2017-06-13 | 从江县胜达活性炭有限公司 | Exhaust gas processing device in a kind of Activated Carbon Production |
| CN106946252A (en) * | 2017-04-27 | 2017-07-14 | 无锡市倍力耐工业设备有限公司 | The outer hot energy-efficient process units of rotary type active charcoal |
-
2007
- 2007-07-03 CN CNA2007100697684A patent/CN101139093A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466614A (en) * | 2013-08-23 | 2013-12-25 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN103466614B (en) * | 2013-08-23 | 2015-02-11 | 洛阳好生活环保科技有限公司 | Activated carbon production technology |
| CN103570017A (en) * | 2013-11-27 | 2014-02-12 | 董寅生 | Carbonization-activation continuous production integrative furnace for phosphoric acid method shell granular active carbons |
| CN103570017B (en) * | 2013-11-27 | 2015-10-28 | 董寅生 | Phosphoric acid method shell granulated active carbon carbonization-activation continuous seepage integrated furnace |
| CN103922338A (en) * | 2014-04-15 | 2014-07-16 | 浙江省林业科学研究院 | Granulating method and equipment for producing granular activated carbon without additional binding agent |
| CN106765205A (en) * | 2016-12-29 | 2017-05-31 | 安徽今朝环保科技有限公司 | A kind of abraum salt drying and incinerating purifier based on injection rotary drying |
| CN106765204A (en) * | 2016-12-29 | 2017-05-31 | 安徽今朝环保科技有限公司 | A kind of abraum salt annealing device |
| CN106823677A (en) * | 2017-03-26 | 2017-06-13 | 从江县胜达活性炭有限公司 | Exhaust gas processing device in a kind of Activated Carbon Production |
| CN106946252A (en) * | 2017-04-27 | 2017-07-14 | 无锡市倍力耐工业设备有限公司 | The outer hot energy-efficient process units of rotary type active charcoal |
| CN106946252B (en) * | 2017-04-27 | 2019-04-02 | 无锡市倍力耐工业设备有限公司 | The outer hot energy-efficient process units of rotary type active charcoal |
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Open date: 20080312 |