External heating vertical active carbon activation furnace
Affiliated technical field
The present invention relates to a kind of activation equipment of making gac.
Background technology
Gac is mainly used in the processing to trade effluent, city trowel used for plastering water, thermal power generation flue gas.Along with country is more and more higher to environmental protection requirement, the demand of gac is also increasing.
China's activation furnace commonly used at present mainly contains: " Si Liepu " stove of USSR (Union of Soviet Socialist Republics) and the pierce smith converter of introducing from the U.S. and Japan in recent years.Stepple furnace; because of the refractory brick of its activation zone is saddle-shape; so claim the saddle stove again; its main drawback: complex structure, cost height, big to advancing stove ingredient requirement height, technical requirements height, maintenance cost, particularly can not production lightweight gac and the macrobead gac of thermal power generation flue gas greater than Φ 8mm.Pierce smith converter, because of its material advances by body of heater self angle of inclination and oblique flight, the rate of advance of the bad control material of production lightweight charcoal, soak time and activation quality are difficult for assurance, therefore also are not suitable for production lightweight gac; In addition, above-mentioned activation furnace all is an internal heating, and combustion gases directly contact with material, can cause the raw material surface combustion inevitably, reduces the yield and the quality of gac.
The raw material of manufacturing gac has multiple, and nearly all carbonaceous material---timber, sawdust, coal, shell, bamboo, agricultural crop straw etc. can be as the raw materials of producing gac.Country advocates wood substituted by bamboo, and activated carbon from bamboo belongs to the lightweight gac, and production lightweight gac can only be used vertical rotary kiln.The Chinese invention patent specification sheets discloses a kind of " activation method of producing activated carbon by chemical method and activation furnace " (notification number CN 1038495C on May 27th, 1998, application number 92103113.0), it is characterized in that: combustion chamber is formed apart from one another by overlapping by activating chamber and the heating chamber that furnace bed board constitutes, odd-level is a heating chamber from bottom to top, even level is an activating chamber, be provided with the stirring rake teeth of being close to furnace bed board automatically that drives by central rotating shaft in the activating chamber, adjacent two-layer heating chamber is up and down connected by the burning gas passage, adjacent up and down two-layer activating chamber is connected by tremie pipe, the material in the activating chamber be subjected to adjacent on, the continuously stirring of the two-sided heating of following heating chamber bed board and rake teeth formula agitator.This activation furnace is vertical externally heated oven, but production lightweight gac can be avoided the scaling loss of raw material and gac, can realize serialization production simultaneously.But this activation furnace has the following disadvantages: 1. combustion chamber is formed apart from one another by overlapping by activating chamber and heating chamber, needs body of heater enough high, otherwise can cause the soak time deficiency under the situation that does not reduce production efficiency, and activation effect is undesirable; In addition, structure is complicated.2. this activation furnace will be made activator with zinc chloride or phosphoric acid, can bring the problem of zinc chloride or phosphoric acid corrosion activation equipment; 3. rake teeth is fixed on the same straight line, turns over that to copy material inhomogeneous; 4. because central shaft cools off hollow because of blowing air in the needs, rotate again simultaneously to drive the rake arm and rotate, so central shaft damages easily.
Summary of the invention
The purpose of this invention is to provide a kind of external heating vertical active carbon activation furnace, this activation furnace can not only be with various raw material continuous production gacs, and the yield of gac and quality height, and the life-span of activation furnace is long.
For achieving the above object, external heating vertical active carbon activation furnace of the present invention comprises combustion chamber, furnace wall, inner core, hot-plate, flight, hopper, feed-pipe, discharge nozzle, be provided with urceolus between inner core and furnace wall, the lower end of this urceolus is connected with step-down gear, motor by transmitting gear; Be provided with heat tunnel between the outer side of urceolus and the furnace wall, the upper and lower of urceolus is sealed by furnace wall, and heat tunnel is communicated with vapor pipe through flue tube; Described hot-plate is divided into urceolus hot-plate and inner core hot-plate, and urceolus hot-plate and inner core hot-plate are separately fixed on the outer side of the medial surface of urceolus and inner core, vertically staggered arrangement successively; Described flight is divided into urceolus flight and inner core flight, urceolus flight and inner core flight are installed on the downside of urceolus hot-plate and inner core hot-plate with hinge respectively, and urceolus flight and inner core flight are in spiral distribution on the downside of urceolus hot-plate and inner core hot-plate respectively; Vapour pipe is communicated with gas-distributing pipe, gas-distributing pipe be positioned at body of heater epimere, be deep into the downside of inner core hot-plate, divide vent hole to be distributed on the gas-distributing pipe tube wall of inner core hot-plate downside; Inner core has the air outlet on the sidewall of respective combustion chamber.
Because after material enters body of heater of the present invention, under copying of urceolus flight and inner core flight turned over, passed, successively fall from top to bottom, the soak time of material, can control automatically by the speed of rotation of urceolus easily, therefore the present invention compares with pierce smith converter with " Si Liepu " stove, can produce the lightweight gac that they are not suitable for producing.The present invention only carries out outer heating with urceolus hot-plate and inner core hot-plate to material, so the present invention compares with internally heated oven, can avoid burning of material and gac, reduces the ashes of product, improves yield, quality, intensity and the surface gloss of gac.Because the present invention does not need to establish in addition heating chamber, simultaneously the flight that distributes of spiral make material turning more even, be heated more abundant, do not need to use chemical activating agent in addition, flight is driven by rotation urceolus but not inner core, therefore the present invention compares with aforementioned " activation method of producing activated carbon by chemical method and activation furnace ", more compact structure, converter life is longer.
Description of drawings
Fig. 1 is the structural representation of this external heating vertical active carbon activation furnace.
Fig. 2 is the A place partial enlarged view of Fig. 1.
Fig. 3 is the urceolus flight layout drawing of this external heating vertical active carbon activation furnace.
Fig. 4 is the inner core flight layout drawing of this external heating vertical active carbon activation furnace.
Embodiment
The present invention will be described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention includes combustion chamber 1, furnace wall 15, inner core 16, hot-plate, flight, hopper 10, feed-pipe 8, discharge nozzle 2, between inner core 16 and furnace wall 15, be provided with urceolus 13, the lower end of this urceolus 13 is connected with step-down gear, motor 19 by transmitting gear 18, so that urceolus is around its central axis rotation.Be provided with heat tunnel 14 between the outer side of urceolus 13 and the furnace wall 15, its upper and lower is sealed by furnace wall 15, and heat tunnel 14 is communicated with vapor pipe 11 through flue tube 12.Inner core 16 has air outlet 17 on the sidewall of respective combustion chamber 1, so that inner core has heat effect.Described hot-plate is divided into urceolus hot-plate 3 and inner core hot-plate 6, and urceolus hot-plate 3 and inner core hot-plate 6 are separately fixed on the outer side of the medial surface of urceolus 13 and inner core 16, vertically staggered arrangement successively.Vapour pipe 9 is communicated with gas-distributing pipe 7, gas-distributing pipe 7 be positioned at body of heater epimere, be deep into the downside of inner core hot-plate 6, divide vent hole to be distributed on the gas-distributing pipe tube wall of inner core hot-plate 6 downsides.As Fig. 2, Fig. 3, shown in Figure 4, described flight is divided into urceolus flight 4 and inner core flight 5, urceolus flight 4 and inner core flight 5 are installed on the downside of urceolus hot-plate 3 and inner core hot-plate 6 with hinge respectively, so that the heater plate surface that flight is close to below it is automatically copied.Urceolus flight 4 and inner core flight 5 are in spiral distribution on the downside of urceolus hot-plate 3 and inner core hot-plate 6 respectively, the distance that is flight and inner core central axis is gradually far away successively, compare with aforementioned patent, like this layout can make stir more evenly, material contacts more abundant with hot-plate.
As improvement of the present invention, as shown in Figure 1 and Figure 2, urceolus hot-plate 3 and inner core hot-plate 6 are hollow structure, and the hollow area of urceolus hot-plate 3 communicates with heat tunnel 14, and the hollow area of inner core hot-plate 6 communicates with the inner chamber of inner core.The structure of hollow can make hot-plate be easier to be heated.
The present invention is material cooling zone and discharge zone below 17 from the air outlet on the inner core, and the scope of air outlet 17 above 10 floor left and right sides hot-plates is the material activating district, up is the material preheating zone again.Material is after the body of heater upper end enters activation furnace, under copying of urceolus flight 4 and inner core flight 5 turned over, passed, successively fall from top to bottom, during 17 positions, air outlet to inner core, the achromachia gas that material produces in reactivation process is 17 ejections from the air outlet, owing to the temperature that sprays gas has reached point of ignition, ejection gas can burn at inner core after meeting air, thereby inner core 16 is heated.Outer heat effect when being subjected to urceolus hot-plate 3 and inner core hot-plate 6, material through the preheating zone, the region of activation is preheated, activates, and generates gac.After the gac that generates entered the cooling zone cooling of inner core air outlet below 17, the discharge nozzle 2 from furnace bottom drew off automatically.The soak time of material in activation furnace can be controlled automatically by the speed of rotation of urceolus 13.
But this external heating vertical active carbon activation furnace continuous production granularity 80 orders are to 12mm, gac more than the iodine number 1000mg/g, and ature of coal, bamboo matter, wooden, shell etc. all can be used as raw materials for production, and be pollution-free at aspects such as water, air, dust, noises during use.In addition, less investment of the present invention, it is fast to found the factory, and builds and produces 1000 tons of Activated Carbon Production lines per year, only needs just can be constructed and put into operation in 60 days, and " Si Liepu " stove production line of building equal scale then needs 8 months.