JPH1059704A - Activated carbon producing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently produce activated carbon having good activity and uniform quality from a carbon component subjected to carbonization treatment at a lower temp. SOLUTION: In a first activated carbon producing device 10 for subjecting a raw material to carbonization treatment at a lower temp., a furnace main body 14 is made of stainless steel and has a cylindrical shape and a part of the furnace main body 14 in the vicinity of its lower end is bent so as to be at a prescribed angle to the axial line of the main body 14 to form a bent part 14b. Also, a product withdrawal port 14b1 of the furnace main body 14 is tight-sealed with an opening/closing cover 14c in a lower section of the main body 14, and also, can easily be opened. In a second activated carbon producing device, a granular raw material produced in the first activated carbon producing device 10 and used for carbonization treatment at a higher temp. is supplied into a furnace main body placed in an inclined state and gradually transferred to the lower end inside the furnace main body by rotating a spiral guide member, with which the inner wall surface of the furnace main body is fitted, to subject the raw material to uniform heat treatment at a higher temp. without excessively heating it and to produce the objective good activated carbon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an activated carbon production apparatus.

[0002]

2. Description of the Related Art As a material for filtering water from a river or the like to the level of drinking water, activated carbon having a high degree of activity has conventionally been suitably used. In the case of activated carbon, the raw material coconut is extremely expensive due to the depletion of resources, which makes it difficult to secure the quantity and is also problematic in terms of profitability, and alternatives have been required. The activity of activated carbon is described in JIS K
Judged by methylene blue bleaching power test based on 1474. In the case of high-performance coconut palm activated carbon, 15m
It has a high value of l. Further, in order to apply activated carbon to drinking water filtration, the test result may be a low value of about 7 ml or less.

On the other hand, with the widespread use of automobiles, the generation of a large amount of rubber waste such as waste tires has become a problem, and it is necessary to secure a wide area for landfilling. Need to deal with the generation of pollutants. Therefore, these rubber wastes are subjected to heat treatment,
Various methods for converting into valuable materials such as oil have been studied. For example, an apparatus for treating rubber waste shown in FIG. 6 is known. In this processing apparatus, rubber waste is packed into a vertically standing furnace body 1, and a combustion gas is blown into a furnace 2 surrounding the furnace body 1 by a burner 3 so that the inside of the furnace body 1 is 400 to 550. The temperature is kept at about ℃ and the rubber waste is heated and carbonized to separate it into carbonized gas and carbonized solids. The carbonization gas was discharged from the gas discharge pipe 4 of the furnace main body 1, was supplied into the cooling device 5, was cooled, and the condensed oil was recovered.

[0004] For the carbonized solids produced by the above processing apparatus, the above methylene blue decolorization test results are 10
It is less than about ml and can be used for drinking water filtration. However, the quality has not yet reached a level suitable for applications requiring high activity, such as for deodorization and gas poisoning.
Further, in the above processing apparatus, since the cylindrical furnace body 1 is erected vertically, the opening / closing lid 1 for the product outlet at the lower end of the furnace body 1 is provided.
It is difficult to tightly seal with a. If this seal is inadequate, flammable gas may leak and cause a fire accident. Further, it was not easy to attach the opening / closing lid 1a to the lower end of the furnace body 1 and open the lid. Therefore, there is a problem that handling of the processing apparatus is complicated and requires a lot of manpower.

[0005] Further, in order to convert the above-mentioned low-activity carbide into activated carbon of better quality, for example, the above-mentioned carbonization solid is accommodated in a cylindrical treatment furnace and heated to about 800 to 1000 ° C by heating from the outside. Had been treated at high temperatures. However, according to this method, a part of the carbonized solid in the central part of the furnace is heated well and becomes activated carbon, but the carbonized solid in the vicinity of the inner wall of the furnace is excessively heated to be graphitized and obtained as activated carbon. Therefore, there was a problem that the acquisition rate of good activated carbon was low and the quality was large. An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an activated carbon manufacturing apparatus capable of easily performing active carbonization of raw materials such as old tires at a low temperature. Another object of the present invention is to provide an activated carbon production apparatus capable of efficiently obtaining activated carbon having a high activity from activated carbon having a low activity that has been carbonized at a low temperature and having a uniform quality.

[0006]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, the structural feature of the invention according to the first aspect is characterized in that it is vertically erected on a table and bent near the lower end. A cylindrical main body having a raw material input port for charging a raw material at the upper end with a product outlet opening radially open,
A carbonization section provided with an upper lid openably and closably covered at the raw material input port and a lower lid openably and closably attached to the product outlet; and heating the carbonization section from the outside to a predetermined temperature. And a liquefaction treatment device for liquefying the exhaust gas discharged from the carbonization treatment part.

According to the first aspect of the present invention, since the product outlet at the lower end of the cylindrical main body is radially opened, the lower lid is kept tightly sealed at the product outlet. It is possible to prevent the gas from being blown out from the inside of the tubular main body and the occurrence of an accident associated therewith. In addition, since the lower lid is vertically mounted, the opening and closing operation and the removal of the product can be easily performed. Therefore, handling of the activated carbon manufacturing apparatus is facilitated, labor is not required, and operating costs can be reduced.

[0008] A structural feature of the invention according to the second aspect is a cylindrical body supported on a table at a predetermined angle from a horizontal position, and a low end provided at an axially upper end of the cylindrical body. An activation processing unit including a raw material input port for charging the carbonized material having the activity, and a product outlet provided at a position near an axially lower end of the cylindrical body; A rotation device for rotating at a predetermined speed around the center, and a carbonized material introduced from the raw material input port to the product outlet according to the rotation of the activation processing unit, which is disposed inside the activation processing unit. There is provided a raw material guiding member and an active heating furnace for heating the activation processing section from the outside to keep the inside at a predetermined temperature.

According to the second aspect of the present invention, the upper end of the cylindrical body is rotated in a state where the raw material guiding member is rotated together with the cylindrical body rotated at a predetermined speed by the rotating device. The raw material can be guided to the product outlet at the lower end of the cylindrical body at a slow moving speed by introducing the low-activity carbonized material from the raw material input port provided in. And
Since the cylindrical body is not always in a state filled with the raw material, and the cylindrical body is maintained at a substantially predetermined temperature by the heating device,
The charged carbonized material is heated at a predetermined temperature. Also,
Since the carbonized material is guided by the raw material guide member and moves at a slow moving speed, uniform heating is performed.
Regarding the heating state of the carbonized material, the heating temperature of the active heating furnace is adjusted, the rotating speed of the rotating device is adjusted, and the moving speed of the raw material by the raw material guiding member is adjusted, so that the material is not excessively heated. It can be in a proper state. As a result, according to the second aspect of the present invention, the carbonized material can be heated to an appropriate state, so that the carbonized material has a desired activity, and high-quality activated carbon can be obtained at a high yield.

[0010] Further, the structural feature of the invention according to claim 3 is that, in the activated carbon production apparatus according to claim 2, the raw material guiding member is arranged around the axis of the cylindrical body, The spiral-shaped plate member fixed to the inner wall surface is provided.

[0011] With the construction of the third aspect of the present invention as described above, the low-activity carbonized material introduced from the raw material introduction port provided at the upper end of the cylindrical body is heated to a uniform temperature,
In addition, it is guided by a spiral-shaped raw material guiding member that rotates with a cylindrical body that rotates at a predetermined speed by a rotating device, moves at a low speed, and reaches a product outlet at the lower end. As a result, the carbonized material is heat-treated uniformly and in an appropriate state that is not excessively heated, so that the effect of the first aspect of the present invention can be reliably obtained.

[0012] Further, the structural feature of the invention according to claim 4 is that, in the activated carbon production apparatus according to claim 2, the raw material guiding member is provided on the inner wall surface of the cylindrical body at the lower end in the axial direction. A plurality of plate-like bodies that are inclined and fixed toward each other and are partially cut out at the lower end to form an opening, and each of the plate-like bodies are arranged alternately at opposing positions on the inner wall surface. In addition, the notched portion of the plate and the plate below the plate are separated.

[0013] With the structure of the fourth aspect of the present invention, the low-activity carbonized material supplied from the material supply port provided on the upper end side of the cylindrical body is heated to a uniform temperature.
In addition, the rotating device guides and moves the inclined plate-shaped body that rotates with the cylindrical body that rotates at a predetermined speed, and moves to a plate-like body provided at an opposing position below the cylindrical body. It reaches the product outlet below at speed. As a result, the carbonized material is heat-treated uniformly and in an appropriate state that is not excessively heated, so that the effect of the first aspect of the present invention can be reliably obtained.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a low-activity activated carbon obtained by treating a rubber material such as a waste tire according to the embodiment. And a second activated carbon production apparatus 30 for highly activating low-activity activated carbon.

As shown in FIG. 1, the first activated carbon production device 10 has a carbonization device 11 and a cooling device 20. The carbonization apparatus 11 has a cylindrical outer heat insulating wall 12 formed by combining refractory bricks erected on a table 11a. The outer heat-insulating wall portion 12 has a bottom wall 12a having a lower end formed of a firebrick. The bottom wall 12a is a first bottom portion 12a1 on one side of the center and a second bottom portion 12a1 on the other side.
It is the bottom 12a2. A burner mounting hole 12b is formed on one side of the outer heat insulating wall 12 on the first bottom 12a1 side, and a large opening 12c is formed on one side of the second bottom 12a2. The upper end of the outer heat insulating wall 12 is open and closed by a lid 12d having an opening 12d1 at the center. From a part of the lid 12d, an exhaust pipe 12e for exhausting the combustion gas in the outer heat insulating wall portion 12 is provided so as to protrude outward.

The burner mounting hole 12b has a burner 1 at its tip.
A gas introduction pipe PG provided with a gas inlet 3 is provided and extends into the outer heat insulating wall portion 12. The gas introduction pipe PG is connected to a gas supply source (not shown), and burns the gas blown from the burner 13 to thereby form the outer heat insulating wall portion 12.
The inside is heated to a uniform temperature. And
A furnace body 14 is coaxially mounted on the outer heat insulating wall 12. Note that oil may be used instead of gas.

The furnace body 14 has a cylindrical shape made of stainless steel.
A raw material inlet 14a1 is provided at the upper end, and a portion near the lower end is a bent portion 14b which is bent obliquely downward by a predetermined angle with respect to the axial direction. The furnace body 14 has a lid 1 at the top.
The end of the bent portion 14b protrudes above the outer heat insulating wall 12 through the opening 12d1 of 2d.
Projecting slightly outward from the opening 12c, and has a vertically opened product outlet 14b1.

The material inlet 14a1 is covered with a lid 14a, and the product outlet 14b1 is covered with an opening / closing lid 14c via a sealing member (not shown).
Since the product outlet 14b1 is vertically opened, the lid 14c can be easily attached to the product outlet 14b1 via a sealing member (not shown). Further, the product opening 14b1 can be easily opened by the opening / closing lid 14c, which is convenient for taking out the product. Near the upper end of the furnace body 14, a gas discharge pipe PD penetrating the side wall is provided.
Has been introduced within. The gas discharge pipe PD is connected to a cooling device 20 attached to the carbonization device 11.

The cooling device 20 comprises a cubic support 21 combined with a steel frame, and a cooling cylinder portion 22 which is incorporated in the support 21 and supported in a hollow state and has a vertically long cylindrical shape and a lower end narrowed down to a conical shape. And The cooling tube part 22 has a cooling pipe 23 disposed inside. Cooling water from a water source (not shown) is supplied to the cooling pipe 23 in a circulating manner. A liquefaction chamber 24 is provided near the lower end of the cooling cylinder 22 via a gas circulation pipe PJ.
And the lower end of the cooling cylinder 22 are also connected by a gas circulation pipe PJ.

The interior of the liquefaction chamber 24 is partitioned into three parts, upper, middle, and lower. In the upper part 24a, the tip of the gas circulation pipe PJ is directed upward, so that the gas hits the wall surface to facilitate liquefaction. Between the upper part 24a and the lower part 24c,
The gas is connected by a plurality of bent tubes 24b, and the gas is easily liquefied at the bent portions of the bent tubes 24b.
That is, the exhaust gas not liquefied in the cooling cylinder 22 is
By being circulated and supplied into the liquefaction chamber 24, the exhaust gas is completely liquefied. An oil outlet 25 for discharging condensed oil to a lower storage box (not shown) is provided at a lower end of the cooling cylinder 22.

As shown in FIG. 2, the second activated carbon production apparatus 30 includes three activated carbon production units 30 arranged on a table 30x in the order of height.
A cylindrical external heating furnace 31 is provided on each of the support bases 30a to 30c so as to be inclined. In addition, external heating furnace 3
At a position near the lower end of 1, a support 30 d provided with a pillow block 42 that supports a rotating shaft 41 described later is provided. The external heating furnace 31 is formed by combining refractory bricks, the lower end 31a is open, and the upper end 31b.
Are sealed in a hemispherical shape. An opening 31b1 is provided at the center of the upper end 31b. Also, the upper end 31b
An opening 31b2 is provided above the center position of
An exhaust pipe 33 is attached to the opening 31b2 so as to face outward.

The external heating furnace 31 has a part of the contact portion with the support 30a removed. At the position of the removed portion 31c, a roller member 32 having two rollers 32a supported by a support member 32b in parallel with the axial direction is provided on the upper surface of the support base 30a as shown in FIG. The external heating furnace 31 has a burner mounting hole 31d provided between the support 30b and the support 30c.
Is provided with a gas introduction pipe PG provided with. The gas introduction pipe PG is connected to a gas supply source (not shown).
By burning the gas blown from the burner 34,
The inside of the external heating furnace 31 is heated to a uniform temperature.

In the external heating furnace 31, a cylindrical furnace body 40 made of a heat-resistant alloy is disposed concentrically. Furnace body 4
0 is provided with an insertion port 40a into which the introduction portion of the hopper 35 is inserted at the axial center position of the upper end, and the pivot shaft 41 is attached at the axial center position of the lower end. A product outlet 40b is formed in the vicinity position. Furnace body 40
As shown in FIGS. 2 and 3, a portion near the upper end is supported by a roller member 32 in the external heating furnace 31, and a rotating shaft 41 provided at the lower end is It is rotatably supported. A sealing material 31a1 is attached to the lower end of the external heating furnace 31, and the space between the furnace main body 40 and the external heating furnace 31 is sealed from the outside. Furnace body 4
The gear 43 is externally fitted to the 0 rotation shaft 41,
The gear 43 is meshed with another gear 44 as shown in FIG. The gear 44 is coaxially fitted to a rotation shaft 45a of an electric motor 45 mounted on the support 30d.

In the furnace main body 40, a spiral guiding member 46, which is a helical plate member centered on the axis of the furnace main body 40, is provided as a raw material guiding member, and is integrally formed on the inner wall surface of the furnace main body 40. Is fixed. By providing the spiral guiding member 46, the granular carbonized material is
It can be guided toward the lower end of the furnace main body 40 at an appropriate moving speed by being guided by the spiral guiding member 46 which rotates with the zero. Below the product outlet 40b at the lower end of the furnace body 40, a storage box 48 for storing the activated raw material is provided.

Next, the operation of the embodiment configured as described above will be described. First, the first activated carbon production device 10
Thereby, carbonization processing of the waste tire is performed. The lid 14a is opened, the raw material, which is the cut waste tire, is charged into the furnace body 14, and the combustible gas is introduced from the gas introduction pipe PG.
The combustion is started by igniting the burner 13. As a result, the inside of the furnace body 14 is heated to a desired temperature within the range of 450 to 600 ° C., the raw material is separated into a gas component and a solid component by thermal decomposition, and the gas component flows out through the gas discharge pipe PD, It flows into the cooling cylinder 22. This makes it possible to obtain low-activity activated carbon from raw materials such as waste tires.

Here, the opening / closing lid 14c is connected to the product outlet 14b.
1 can be easily attached to the product outlet 14b1
Is maintained, it is possible to prevent gas leakage from the inside of the furnace main body 14 and an accident accompanying the gas leakage. Further, it is easy to open the product outlet 14b1 by the opening / closing lid 14c, which is convenient for taking out the product. The gas component is cooled and condensed in the cooling cylinder portion 22, and the remaining gas component is condensed in the liquefaction chamber 24 to become condensed oil mainly composed of heavy oil. To be housed. The condensed oil stored in the storage box can be used as fuel.

When the gas components are sufficiently separated from the raw material, the combustion of the gas by the burner 13 is stopped, and the furnace body 14 is cooled. When the temperature of the furnace body 14 becomes equal to or lower than a predetermined temperature, the open / close lid 14c on the lower side of the furnace body 14 is opened, so that low-activity activated carbon can be easily housed in the housing box from inside the furnace body 14. be able to. This first
According to the activated carbon production device 10, the waste gas is supplied to the cooling device 2
Since it is completely liquefied by 0, the air pollutants do not leak to the outside and the carbonization of the waste tire can be performed without causing environmental pollution.

Next, the second activated carbon production apparatus 30
A manufacturing process is performed to obtain activated carbon of high activity from activated carbon of low activity. First, the burner 34 is ignited and the inside of the furnace main body 40 is heated to a desired temperature of about 500 to 1000 ° C. Will be retained. At the same time, the rotation of the electric motor 45 starts, and the gear 44
Is transmitted to the gear 43, and the furnace body 40 starts rotating at a low speed. Next, as shown in FIG.
The pulverized low-activity raw material contained in the
, And the supplied granular raw material is supplied to the furnace main body 40.
Is guided by the spiral guide member 46 attached to the inner wall surface of the furnace, and gradually moves inside the furnace body 40 toward the lower end. That is, by gradually moving inside the furnace main body 40 maintained at a uniform temperature, the carbonized raw material is heat-treated uniformly at a high temperature, and is formed into a good activated carbon without being overheated. Product outlet 40b at lower end of main body 40
From the outside to be stored in the storage box.

The activated carbon obtained in this way is JIS K
The result of the methylene blue bleaching power test based on 1474 is
It was a very good thing of about 11 to 14 ml.
Therefore, this activated carbon can be used not only for filtering drinking water but also for various deodorizing and anti-poisoning applications requiring even higher performance. In addition, this activated carbon uses inexpensive raw material called waste tire,
In addition, since the above production method enables continuous mass production, conventional coconut palm is provided at a significantly lower price than activated carbon.

Next, as a first modification of the raw material guide member provided on the inner wall surface of the furnace main body 40, as shown in FIG. 5, the inner wall surface of the furnace main body 40 is alternately and axially arranged from the position where the inner wall faces each other. A plurality of guide plate members 47 extending downward and inclined are fixed. The guide plate member 47 is formed by cutting off a part of the lower end side of the elliptical shape, and the cutout portion 47 a is disposed with a space between the guide plate member 47 and the lower guide plate member 47. Also by providing the guide plate member 47, as shown in the above embodiment, the moving speed of the granular carbonized material can be set to an appropriate speed, and the same effect can be obtained.

It should be noted that a plurality of through holes can be provided in the plate surfaces of the spiral guide member 46 and the guide plate member 47 shown in the above embodiment and the first modification. This makes it possible to smoothly drop the small-grained, sandy carbonized raw material that is rapidly heated, thereby preventing quality variations. In addition, rubber waste other than the above-mentioned waste tires can be used as a raw material.

[Brief description of the drawings]

FIG. 1 is a partially broken cross-sectional view schematically illustrating a first activated carbon manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a partially broken sectional view schematically showing the second activated carbon manufacturing apparatus.

FIG. 3 is a sectional view schematically showing a mounting portion of a roller member of the second activated carbon manufacturing device.

FIG. 4 is a plan view schematically showing a periphery of a rotating shaft of the second activated carbon manufacturing device.

FIG. 5 is a partially broken cross-sectional view schematically showing a furnace body as a modification.

FIG. 6 is a partially broken sectional view schematically showing a conventional activated carbon manufacturing apparatus.

[Explanation of symbols]

10: first activated carbon production device, 11: carbonization device, 12
... Outer heat insulating wall, 12b ... Burner mounting hole, 12c ... Opening, 14 ... Furnace body, 14a ... Lid, 14b ... Bending part, 1
4b1 ... product outlet, 14c ... bent part, 20 ... cooling device, 22 ... cooling cylinder, 24 ... liquefaction chamber, 25 ... outlet, 3
0: second activated carbon production apparatus, 30a to 30d: support base, 3
1: external heating furnace, 32: roller member, 32a: roller,
32b: support member, 40: furnace body, 41: rotating shaft, 42
... Pilro block, 45 ... Electric motor, 46 ... Spiral guide member, 47 ... Induction plate member, PG ... Gas introduction pipe, PD ... Gas discharge pipe, PJ ... Heavy oil supply pipe.

Claims (4)

[Claims] A cylindrical body having a product take-out port which is vertically erected on a table, is bent at a position near a lower end and is opened in a radial direction, and has a material input port for charging a raw material at an upper end; A carbonization section provided with an upper lid that is openably and closably covered by the raw material input port, and a lower lid that is openably and closably attached to the product outlet; and heating the carbonization section from outside. An activated carbon manufacturing apparatus, comprising: a heating furnace for setting the inside temperature to a predetermined temperature; and a liquefaction processing apparatus for liquefying exhaust gas discharged from the carbonization processing unit. 2. A raw material for charging a low-activity carbonized material provided on an upper end in the axial direction of a cylindrical body supported on a table at a predetermined angle from a horizontal position. An activation processing unit including an input port and a product outlet provided at a position near the lower end in the axial direction of the cylindrical body; and rotating the activation processing unit at a predetermined speed about the axis. A rotation device, and a raw material guiding member disposed inside the activation processing unit and guiding the carbonized material input from the raw material input port to the product outlet according to the rotation of the activation processing unit, An activated carbon production apparatus, comprising: an activation heating furnace that heats the activation processing section from the outside to keep the inside at a predetermined temperature. 3. The activated carbon manufacturing apparatus according to claim 2, wherein the raw material guiding member is arranged around an axis of the activation processing unit, and has a spiral shape fixed to an inner wall surface of the activation processing unit. An activated carbon production apparatus characterized in that a plate member is provided. 4. The activated carbon manufacturing apparatus according to claim 2, wherein the raw material guide member is fixed to an inner wall surface of the activation processing portion so as to be inclined toward a lower end in an axial direction and has a lower end. A plurality of plate-like members are cut out to form an opening, and each plate-like member is alternately arranged at a position facing the inner wall surface, and the plate-like member is cut out. An activated carbon production apparatus characterized in that a space between a bent portion and a plate-like body thereunder is separated.