JP5419611B2 - Continuous carbonization equipment - Google Patents

Description

  The present invention relates to a continuous carbonization apparatus for continuously producing carbides.

  Conventionally, as a carbonization device for carbonizing the object to be carbonized, a jacket is provided around it, high temperature steam is introduced inside it, or a heating element is provided, and rotation to press the object to be dried against the heat transfer surface by centrifugal force Japanese Patent Application Laid-Open No. 10-185138 includes a drying apparatus having blades and a carbonizing machine having the same configuration as that of the drying apparatus and carbonizing a dried material generated by the drying apparatus.

In the invention of Japanese Patent Laid-Open No. 10-185138, the organic gas generated in the carbonizer is burned in the combustion furnace, and the exhaust gas generated in the combustion furnace is used for heating the jacket of the carbonizer. Accordingly, it is not necessary to separately prepare a fuel for heating the carbonizer, so that cost performance is excellent.

  However, since the invention of Patent Document 1 is a batch-type carbonization apparatus, once the apparatus is started, carbonization cannot be newly started until carbonization is newly added until all the processes are completed. Therefore, even if the efficiency of individual processes such as the drying process and carbonization process can be improved by improving the drying equipment and carbonizer, the work becomes intermittent, so there is a certain limit to efficiency. It was.

  Then, an object of this invention is to provide the continuous carbonization apparatus which can produce | generate a carbide | carbonized_material and can discharge | emit the produced | generated carbide | carbonized_material continuously, supplying a to-be-carburized material.

The present invention includes two hoppers having an inlet valve and an outlet valve that are alternately opened and closed when the object to be carbonized is charged;
The carbonizing machine for carbonizing the object to be carbonized, the carbonizing machine connected to a supply screw conveyor for charging the object to be carbonized is attached to a rotating shaft provided at the center of a cylindrical heating tank. The carbonization object in which the carbonized object is pressed against the heat transfer surface of the inner periphery of the heating tank by centrifugal force by rotating a plurality of base blades, and a discharge screw conveyor that discharges the solidified carbonized is connected to the lower part. Machine,
Means for heating the heat transfer surface of the carbonizer;
Comprising a screw conveyor that cools solids carbonized by the carbonizer and discharges the cooled carbonized product, and a cooler having two upper and lower discharge valves that are connected downstream of the screw conveyor and opened and closed alternately,
The outlet valves of the two hoppers are respectively connected to the supply screw conveyor, and the articles to be carbonized put into the two hoppers are opened to the carbonizer by the supply screw conveyor when the respective outlet valves are opened. Thrown in,
By the continuous carbonization apparatus characterized by continuously carbonizing the carbonized material supplied to the carbonizer via the supply screw conveyor by alternately introducing and discharging the carbonized material to and from the two hoppers. The problem has been solved.

According to the present invention, there are provided two hoppers into which the object to be carbonized is charged, valves are respectively installed at the inlet and outlet of the hopper, and the valves of each hopper are alternately opened and closed, so that the carbonizer is externally connected. The material to be carbonized can be continuously charged in a state where it is cut off from the air.
Thereby, since operation | work does not become intermittent and carbonization is performed continuously, it can carbonize a large amount of to-be-carburized in a shorter time than before.
Moreover, the solid substance which carbonization advanced is discharged | emitted from a carbonizer by a discharge screw conveyor, and is conveyed to a cooler. The two upper and lower discharge valves connected downstream of the screw conveyor of the cooler are opened and closed alternately during discharge from the cooler and when transported to the carbonized product hopper. Air can be prevented from entering the carbonizer through the machine.
If the means for heating the heat transfer surface of the carbonizer is a hot-air generator that can reuse the gas discharged from the carbonizer, the fuel cost can be reduced and it is economical.
Further, if a continuous drying apparatus is provided as in the third aspect, the process from drying to carbonization can be performed continuously, so that the operation time is shortened and fuel is saved.
Furthermore, as described in claim 4, if a drying apparatus having at least one auxiliary upper screw conveyor and auxiliary lower screw conveyor is used, the dried product that has been dried can be discharged in a shorter time. Increases efficiency.

The outline | summary flowchart of 1st Embodiment of the continuous carbonization apparatus of this invention. The longitudinal cross-sectional view of the 1st hopper and 2nd hopper of the continuous carbonization apparatus of this invention. The longitudinal cross-sectional view of the carbonizer of the continuous carbonization apparatus of this invention. The general | schematic flowchart of 2nd Embodiment of the continuous carbonization apparatus of this invention. The longitudinal cross-sectional view of the drying apparatus of 2nd Embodiment of the continuous carbonization apparatus of this invention. (A) And (B) is a longitudinal cross-sectional view of different embodiment of the drying apparatus of 2nd Embodiment of the continuous carbonization apparatus of this invention. The longitudinal cross-sectional view which is other embodiment of the rotary winding upper blade | wing of drying apparatus, and shows the internal structure of the drying apparatus which attached this rotary winding upper blade | wing to the rotating shaft of the drying tank.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings 1 to 7. However, the present invention is not limited to these embodiments.
FIG. 1 is a schematic flow diagram of a first embodiment of a continuous carbonization apparatus of the present invention, FIG. 2 is a longitudinal sectional view of a first hopper and a second hopper of the continuous carbonization apparatus of the present invention, and FIG. FIG. 4 is a schematic flow diagram of a second embodiment of the continuous carbonization apparatus of the present invention, and FIG. 5 is a second embodiment of the continuous carbonization apparatus of the present invention. 6A and 6B are longitudinal sectional views of different embodiments of the drying apparatus of the second embodiment of the continuous carbonization apparatus of the present invention, and FIG. It is other embodiment of a rotary winding upper blade, Comprising: It is a longitudinal cross-sectional view which shows the internal structure of the drying apparatus which attached this rotary winding upper blade to the rotating shaft of the drying tank.

First, the continuous carbonization apparatus 1A of the first embodiment will be described with reference to FIGS.
The continuous carbonization apparatus 1A of the first embodiment mainly includes a first hopper 20a, a second hopper 20b, a hot air generator 30, and a carbonizer 40.
A material to be carbonized is supplied to the raw material receiving hopper 12, and the material to be carbonized is conveyed to the first hopper 20a or the second hopper 20b. The raw material receiving hopper 12, the first hopper 20a, and the second hopper 20b are a discharge screw conveyor 74, a pipe 60 installed in the raw material receiving hopper 12, a pipe 60a installed in the first hopper 20a, an inlet valve 26a, and a second hopper. It is connected via a pipe 60b installed at 20b and an inlet valve 26b.

Below the first hopper 20a and the second hopper 20b, screw conveyors 27a and 27b each having a screw are provided. At the lower part of each screw conveyor, discharge pipes 28a, 28b, outlet valves 29a , 29b are installed and connected to the supply screw conveyor 63 (see FIG. 2). One end of the supply screw conveyor 63 is connected to the upper side surface of the carbonizer 40.

The carbide is introduced into the open hopper of the inlet valves 26a, 26b. Since the inlet valves 26a and 26b are not opened at the same time, they are always put into only one of the hoppers.
Further, the inlet valve 26a and the outlet valve 29a, and the inlet valve 26b and the outlet valve 29b are not opened at the same time, but are opened alternately. When the inlet valve 26a is opened, the outlet valve 29a is closed, and when the inlet valve 26b is opened, the outlet valve 29b is closed.

For example, when the inlet valve 26a is opened, the other inlet valve 26b is closed, so that the carbide is introduced into the first hopper 20a.
When the outlet valve 29a is opened, the object to be carbonized introduced into the first hopper 20a is conveyed to the carbonizer 40 by the supply screw conveyor 63. Since there is a screw inside the supply screw conveyor 63, the object to be carbonized does not flow back to the first hopper 20a. When the outlet valve 29a is opened, the inlet valve 26a and the outlet valve 29b are closed, and the inlet valve 26b is opened.

  The conveyed object to be carbonized is carbonized by the carbonizer 40. The carbonizer 40 is kept in an oxygen-free state (1% or less) in order to prevent combustion due to oxygen contamination. In order to obtain an oxygen-free state (1% or less), at the start of operation, nitrogen is introduced into the carbonizer 40 to release the internal air to the outside, and the air is replaced with nitrogen. The reason why the outlet valve 29a is opened and the inlet valve 26a and the outlet valve 29b are closed at the same time when the carbonized material is put into the carbonizer 40 is to prevent air from entering from outside. In addition to the inlet valves 26a and 26b and the outlet valves 29a and 29b, valves are provided at the connecting portions of the piping of each device to prevent air from entering.

  Further, by opening the inlet valve 26b, the material to be carbonized in the raw material receiving hopper 12 is put into the second hopper 20b. At this time, since the outlet valve 29b is closed, the article to be carbonized introduced into the second hopper 20b is not conveyed to the carbonizer 40.

Here, the carbonizer 40 will be described. The carbonizer 40 has a cylindrical heating tank 41, and rotates the outer jacket 42, the heat transfer surface 46, and the object to be carbonized heated by the hot air from the hot air generator 30 and presses the object to be heated to the heat transfer surface 46 with centrifugal force. Therefore, a plurality of base blades 44 attached to the rotation shaft 43 at the center of the heating tank 41 are provided (see FIG. 3). The rotating shaft 43 is rotatable by a motor M1 attached to the outside of the bottom of the heating tank 41. The base blades 44 are provided in three stages, but may be a plurality of stages. The outer peripheral jacket 42 is heated by hot air of about 600 ° C. sent from the hot air generator 30, and the temperature of the heat transfer surface 46 becomes about 450 ° C.
In addition, the heating means of the outer periphery jacket 42 is not limited to the hot-air generator 30 shown in figure, Other heating means may be sufficient.

  The biggest feature of the carbonizer 40 is the base blade 44 of a plurality of stages attached to the rotating shaft 43 at the center of the main body. As this rotates, the object to be carbide is pressed in the form of a thin film in the vertical direction of the heat transfer surface 46. The inner surface 45 of the carbide to be thin film is also exposed to a high temperature atmosphere and carbonized in an oxygen-free state. The gas generated in the carbonizer is sent to the hot air generating furnace 30 connected by the pipe 69 and used to heat the outer jacket 42.

  Note that the base blade 44 is not limited to the shape shown in FIGS. 1 and 3, and one or a plurality of base blades may be provided at each stage. Here, the “stage” is formed at every height where the base blade exists when there are a plurality of base blades at the same height as in the embodiment of FIGS. 1 and 3. When there is only one base blade at the same height as in the embodiment of FIG. 7 described later, each base blade is configured.

The continuous supply of the object to be carbide will be described. Assuming that the inlet valve 26a and the outlet valve 29b are opened and the inlet valve 26b and the outlet valve 29a are closed, the carbonized material of the second hopper 20b is fed by the supply screw conveyor 63 by the opening of the outlet valve 29b. And carbonized. The material to be carbonized in the raw material receiving hopper 12 is charged into the first hopper 20a.
The supply screw conveyor 63 is provided in the upper part of the carbonizer 40. As described above, the object to be carbide is carbonized by being pressed in a thin film shape in the vertical direction of the heat transfer surface 46. When the carbonized material that has undergone carbonization is discharged from the discharge screw conveyor 65, the thin film of the carbonized material falls downward by the amount discharged, and thus the supply screw conveyor 63 supplies new carbonized material. The new carbide is not pressed down and is pressed against the heat transfer surface 46 in the form of a thin film at that position. As a result of the repetition of the operation, objects having a higher degree of carbonization are collected in the lower part of the carbonizer 40.

As described above, while the carbonization is progressed by the carbonizer 40, the outlet valve of the hopper in which the carbonized material is stored is opened, and the carbonized material is newly introduced into the carbonizer 40. Can be supplied automatically.
As described above, a large amount of carbonized material that has not been carbonized exists above the carbonizer 40, and a large amount of carbide that has been carbonized increases below the carbonizer 40. Therefore, the position where the discharge screw conveyor 65 for continuous discharge of carbide is provided is the lower portion of the carbonizer 40.

  The carbonized high-temperature solid is discharged from the carbonizer 40 by the discharge screw conveyor 65, but burns when exposed to the atmosphere as it is, and then sent to the cooler 50. The carbonizer 40 and the cooler 50 are connected via a discharge screw conveyor 65 installed in the carbonizer 40, a valve 49, and an introduction pipe 52 installed in the cooler 50.

  The cooler 50 includes a base blade 56 and a cooling surface 58, and the structure thereof is the same as that of the carbonizer 40. The base blade 56 is provided in three stages, but may be one stage. The cooling surface is cooled by the cooling water sent to the outer peripheral jacket 54, and the solidified carbon is scooped up along the cooling surface 58 by the rotation of the base blade, and at the same time, rapidly pressed by being pressed into a thin film shape. To be cooled.

  The carbonized product thus cooled is discharged from the cooler 50 by the screw conveyor 67. Discharge valves 66 a and 66 b are installed downstream of the screw conveyor 67. First, the upper discharge valve 66a is opened, and the lower discharge valve 66b is closed. When the discharged carbonized product reaches a certain amount, the lower discharge valve 66 b is opened, and the carbonized product is conveyed to the connected carbonized product hopper 80 via the pipe 64. The piping 64 is also provided with a conveyor (not shown). At the same time as the lower discharge valve 66b is opened, the upper discharge valve 66a is closed. If the upper and lower exhaust valves 66a and 66b are simultaneously opened, air may enter the carbonizer 40 through the cooler 50. Therefore, the exhaust valves 66a and 66b are alternately opened and closed, and external air is always supplied. Is blocked.

  When discharged from the discharge valve 66 b, the carbonized product is conveyed to the carbonized product hopper 80 connected via the pipe 64. The carbonized product of the carbonized product hopper 80 is transported by the transport vehicle 82 or the like and used as fuel or the like. The main component of the produced carbonized product is carbon and does not contain harmful substances such as dioxins.

Next, the continuous carbonization apparatus 1B of the second embodiment shown in FIG. 4 will be described.
In the present embodiment, a continuous drying apparatus 10A is provided, and the dried product dried by the drying apparatus 10A is carbonized by the carbonizer 40. Thereby, drying and carbonization can be performed continuously.

  In the drying apparatus 10A in which the jacket is heated, the object to be dried is pressed against the heat transfer surface inside the drying apparatus 10A, whereby the moisture of the object to be dried evaporates and a dried product is generated. The produced dried product is sent to the carbonizer 40 through the first hopper or the second hopper. In the carbonizer 40, the jacket is heated by the hot air generator 30 to carbonize the dried product. The solid material carbonized by the carbonizer 40 is conveyed to the cooler 50, and the carbonized product is cooled.

  As shown in FIG. 5, the drying apparatus 10 </ b> A includes a vertical cylindrical drying tank 4, a jacket 6 formed around the drying tank 4, and a boiler (not shown) that feeds steam 7 into the jacket 6. ). The jacket 6 is provided with a steam inflow portion 11 that guides the steam 7 into the jacket 6 and a steam discharge portion (not shown) that discharges the steam 7 out of the jacket 6. The jacket 6 is heated by the steam 7.

  The inside of the drying tank 4 is partitioned into a mixed drying zone MZ and a drying zone DZ. An upper screw conveyor 15 is connected to the upper part of the mixing and drying zone MZ to guide the material 3 to be dried, which is scooped up by the rotary winding upper blade 5. A lead screw 16 is provided inside the upper screw conveyor to prevent the material to be dried 3 from flowing back into the drying tank 4. A lower screw conveyor 13 having a supply screw 14 provided therein is connected to a substantially intermediate position below the mixing / drying zone MZ of the drying tank 4.

A hollow cylindrical vertical transfer pipe 17 is connected between the connection port 15X provided at the bottom end of the upper screw conveyor 15 and the connection port 13X provided at the upper end of the lower screw conveyor 13. A hopper H for feeding the material to be dried 3 is provided at the intermediate portion.
The vertical transfer pipe 17 may be directly connected to the hopper H. Moreover, when the to-be-dried material 3 is sludge-like or liquid, the hopper H does not need to be provided. In this case, it is necessary to provide a slot for feeding the material to be dried 3 in the middle part of the lower screw conveyor 13.
Further, a branch screw conveyor communicating with the drying device may be provided at the lower end of the lower screw conveyor 13. In this case, the downstream end of the lower screw conveyor 13 is closed.

  On the other hand, a discharge screw conveyor 21 provided with a lead screw 22 is connected to the bottom of the front end of the bottom portion 4c below the drying tank 4. The material to be dried 3 dried in the drying zone DZ is continuously discharged by the discharge screw conveyor 21.

  A plurality of base blades 5 a are arranged on the bottom portion 4 c in the drying tank 4, and the whole of the plurality of base blades 5 a is shown as a rotary hoist blade 5. These are connected to a motor M2 attached to the outside of the bottom portion 4c of the drying tank 4, and can be rotated around a rotation shaft (not shown) by the motor M2. The plurality of base blades 5a are vertically attached to the central rotating shaft 24 arranged vertically along the direction of gravity in the drying tank 4 with a certain interval.

  The length of the base blade 5a of the rotary winding upper blade 5 is such that the material to be dried 3 can be moved from the one end 18 of the base blade 5a to the other end 19 and scooped up from the other end 19 A flat surface 8 is provided. The outer peripheral end 9 is formed on the heat transfer surface 2 so that a clearance for allowing the rotation of each base blade 5 a is formed between the outer peripheral end 9 of the flat surface 8 and the heat transfer surface 2. It is formed in an arc shape along. Further, the flat surface 8 of each base blade 5a of the rotary hoist blade 5 is formed so as to extend obliquely upward from one end portion 18 toward the other end portion 19 in the direction opposite to the rotation direction R thereof.

  The other end portion 19 of one base blade 5a among the plurality of base blades 5a is higher than the height of the one end portion 18 of the other base blade 5a positioned adjacent to the rotation direction R in the opposite direction. It is configured so that the object to be dried 3 is pressed on the heat transfer surface 2 by the centrifugal force P while the object to be dried 3 is placed on the plurality of base blades 5a, and dried.

  In the drying apparatus 10 </ b> A having such a configuration, the material to be dried 3 that is driven into the hopper H by driving the supply screw 14 is supplied to the drying tank 4 by the lower screw conveyor 13. Here, the to-be-dried object 3 includes various types such as granular, powdery, liquid, and massive.

  The to-be-dried object 3 supplied to the inside of the drying tank 4 is rotated by the rotation of the base blade 5a of the rotary winding upper blade 5 in the drying zone DZ. It rests on the flat surface 8 and moves from one end 18 to the other end 19 along the base blade 5a. At this time, the material to be dried 3 has an elongated shape along the heat transfer surface 2 of each base blade 5a, and is directed upward by the flat surface 8 extending obliquely upward from the one end portion 18 toward the other end portion 19. As a result, the material to be dried 3 is pushed up against the heat transfer surface 2 by the centrifugal force P while being scooped up.

  The material to be dried 3 rises along the heat transfer surface 2 and spreads in a thin film shape to the mixed drying zone MZ inside the drying tank 4. When reaching the top, the material to be dried 3 is led out by the upper screw conveyor 15 and passes through the vertical transfer pipe 17. It falls into the lower screw conveyor 13. The material to be dried 3 that has fallen into the lower screw conveyor 13 merges with the material to be dried 3 that is put into the hopper H in the lower screw conveyor 13 and is supplied to the vicinity of the lower end of the mixed drying zone MZ in the drying tank 4. The

  The material 3 to be dried in the drying tank 4 is pressed against the heat transfer surface 2 to evaporate the moisture and dry. The to-be-dried material 3 that is put into the hopper H and contains a large amount of moisture is mixed with the to-be-dried material 3 that has fallen into the lower screw conveyor 13, so that the moisture content decreases. In addition, since the mixture of the objects to be dried is newly introduced during the operation of the drying apparatus 10A, the heat transfer surface is caused by the rotating base blade 5a even if it falls slightly downward from the charging position due to gravity. At the same time, it rises along the line 2 and rises to the mixing and drying zone MZ while being pressed in the form of a thin film. Therefore, there are many newly introduced materials to be dried in the upper mixed drying zone MZ, and the drying proceeds, while there are few newly introduced materials to be dried on the lower drying zone DZ. After drying, the dried material 3 to be dried increases.

  The to-be-dried object 3 in the drying tank 4 inner bottom part 4c is discharged | emitted continuously by the discharge screw conveyor 21. FIG. The screw 22 provided inside the discharge screw conveyor 21 prevents the material to be dried 3 from flowing backward into the drying tank 4. Depending on the amount administered from the hopper H, the object 3 to be dried is discharged from the drying device 10A by the discharge screw conveyor 21 and can be continuously dried.

6A and 6B are longitudinal sectional views of different embodiments of the drying apparatus 10A. In addition, about the same structure as 10 A of drying apparatuses shown in FIG. 6, the same code | symbol is attached | subjected and description is abbreviate | omitted.
In the drying apparatus 10B of FIG. 6 (A), on the other outer surface of the drying tank 4 to which the upper screw conveyor 15 is connected, the height of the upper screw conveyor 15 is placed at the same level or above the lower screw conveyor 13. Two or more auxiliary upper screw conveyors 31 are connected. One or more auxiliary lower screw conveyors 33 are connected to the lower screw conveyor 13 or below the lower screw conveyor 13.

  A hollow cylindrical vertical transfer pipe 35 is connected to the connection port 31X provided at the lower end of the auxiliary upper screw conveyor 31 and the connection port 33X provided at the upper end of the auxiliary lower screw conveyor 33.

  When the drying apparatus 10B is operated, the material to be dried 3 is scooped up along the heat transfer surface 2, and when it reaches the vicinity of the upper position 4a of the mixed drying zone MZ inside the drying tank 4, it is led out by the upper screw conveyor 15. .

  Further, the material to be dried 3 that has reached the upper position of the mixed drying zone MZ is led out from one or more auxiliary upper screw conveyors 31 by screws 32, and is connected to the vertical transfer pipe 35 connected to the auxiliary upper screw conveyor 31. Then, it falls into the auxiliary lower screw conveyor 33. The to-be-dried object 3 that has fallen is supplied by the screw 34 from the auxiliary upper screw conveyor 33 to a position near the lower end of the mixing and drying zone MZ of the drying tank 4.

  By connecting one or more auxiliary upper screw conveyors 31, vertical transfer pipes 35, and auxiliary lower screw conveyors 33 to the side surface of the drying tank 4 as in the drying apparatus 10 </ b> B, the mixing and drying zone is obtained by rotating the rotary hoist blade 5. The amount of the material to be dried 3 that is scooped up by MZ further increases. As a result, the material to be dried 3 that has been dried can be continuously discharged from the drying zone DZ by the discharge screw conveyor 21 in a shorter time. Further, if the number of auxiliary upper screw conveyors 31, vertical transfer pipes 35, and auxiliary lower screw conveyors 33 connected to the drying tank 4 is increased, a large amount of objects to be dried can be dried more quickly and discharged accordingly. be able to.

  An upper screw conveyor 23 having a screw 25 is connected to the outer surface of the upper portion 4a of the drying tank 4 of the drying apparatus 10C of FIG. 6B, and the material to be dried 3 is charged at the tip portion thereof. A hopper H2 having a mouth is provided.

  Further, one or more auxiliary upper screw conveyors 31 are connected to the outer surface of the upper portion 4 a of the drying tank 4, and auxiliary is provided directly below each auxiliary upper screw conveyor 31 on the outer surface of the substantially intermediate portion 4 d of the drying tank 4. A lower screw conveyor 39 is connected.

  A connection port 31X is provided at the lower end of each auxiliary upper screw conveyor 31. A hollow cylindrical vertical transfer pipe 35 is connected to a connection port 33X provided at the upper end of each auxiliary lower screw conveyor 39 at the connection port 31X. Has been.

  In the drying apparatus 10C, the drying zone DZ is divided longer than the lower zone inside the drying tank 4, and the mixed drying zone MZ divided into the upper zone is relatively short.

  The material to be dried 3 introduced into the hopper H <b> 2 from the introduction port is supplied from the upper screw conveyor 23 to the inside from the upper part 4 a of the drying tank 4 by the screw 25.

  The to-be-dried material 3 supplied to the inside of the drying tank 4 by the upper screw conveyor 23 is transmitted to the base blade 5a which is not initially rotated by gravity, and accumulates on the bottom 4c of the drying tank 4.

  The material to be dried 3 deposited on the bottom 4c of the drying tank 4 is pushed up from the drying zone DZ to the mixed drying zone MZ while being pressed against the heat transfer surface 2 by the action of the centrifugal force P due to the rotation of the rotary winding upper blade 5. .

  The to-be-dried object 3 that has reached the upper position of the mixed drying zone MZ is in a state of being dried to some extent in the ascending process, and is led out from one or more auxiliary upper screw conveyors 31 by screws 32, and is transferred to each vertical transfer. It falls into each auxiliary lower screw conveyor 33 through the pipe 35.

  The objects to be dried 3 that have fallen into each auxiliary lower screw conveyor 33 are supplied to the position below the mixing and drying zone MZ of the drying tank 4 by the screws 34 and mixed with the objects to be dried 3 that are scooped up from below the drying tank 4. And then dried in the process of being lifted upward.

  Thus, since the supply port for the object to be dried 3 is provided in the upper portion 4a of the drying tank 4, the moisture of the object to be dried 3 is caused by radiant heat even in the process of dropping from the supply port to the bottom part 4c of the drying tank 4. Evaporate to some extent. The to-be-dried material 3 that has reached the bottom 4c is scooped up and pressed against the heat transfer surface 2 in the drying zone DZ by the rotation of the rotary upper blade 5 to accelerate the drying action.

  Moreover, the to-be-dried material 3 moved to the upper position circulates and moves in a short cycle in the mixed drying zone MZ constituted by a short region via each auxiliary upper screw conveyor 31, the vertical transfer pipe 35, and the auxiliary lower screw conveyor 33. Therefore, drying of the to-be-dried material 3 can be further promoted. Further, if the number of auxiliary upper screw conveyors 31, vertical transfer pipes 35, and auxiliary lower screw conveyors 33 connected to the drying tank 4 is increased, the drying of the material to be dried 3 can be accelerated promptly and in large quantities accordingly. Can do.

The to-be-dried material 3 that is put into the hopper H2 and contains a large amount of moisture is put into the drying tank 4 during the operation of the drying device 10C. Therefore, even if it falls slightly downward from the charging position due to gravity, the material to be dried 3 spreads in a thin film shape and is pressed against the heat transfer surface 2 by the upper rotating base blade 5a. And dry. Thereby, in the upper mixed drying zone MZ, there are many newly introduced objects to be dried and the drying proceeds, while in the lower drying zone DZ, there are few newly introduced objects to be dried. After drying, the dried material 3 to be dried increases.
The material 3 to be dried close to the bottom 4c of the drying tank 4 can be continuously discharged by the discharge screw conveyor 21.

  In addition, the attachment position of the upper screw conveyor 23 can be freely determined according to the properties of the material 3 to be dried, particularly the moisture content, viscosity, and lump size.

  Finally, FIG. 7 is a longitudinal sectional view showing the internal structure of a continuous drying apparatus, which is another embodiment of the rotary hoist blade, and the rotary hoist blade is attached to the rotary shaft of the drying tank. In the figure, reference numeral 70 denotes a rotary winding upper blade (base blade), 71 denotes one end, 72 denotes the other end, and 73 denotes an arm portion. In this way, there is only one base blade at the same height, and the object to be dried, which is zigzag and is wound up by the rotating hoist blades arranged almost spirally as a whole, can be continuously dried. Moreover, such a rotary winding upper blade can also be used for a carbonizer.

  Note that the drying apparatus shown in FIGS. 4 to 7 is not limited to the rotary winding upper blade having the illustrated shape, and various combinations can be used for the number of sheets and the number of stages.

  When drying is completed by any of the drying apparatuses 10A, 10B, and 10C described above, the dried product is conveyed to the first hopper 20a or the second hopper 20b. About the process after being conveyed to the 1st hopper 20a or the 2nd hopper 20b, since it is the same as that of 1st Embodiment, description is abbreviate | omitted.

  Thus, according to this invention, since carbonization can be performed continuously, a large amount of carbonized objects can be carbonized more efficiently than before. Therefore, the work is not intermittent and efficient. In addition, by providing a continuous drying device, it is possible to continuously perform from drying to carbonization, and as a result, the working time is shortened as a whole, resulting in saving of fuel.

1A, 1B, 1C: Continuous carbonization device 2: Heat transfer surface 3: To-be-dried object 4: Drying tank 5: Rotary winding upper blade 5a: Base blade 10A, 10B, 10C: Drying device 13: Lower screw conveyor 15: Upper part Screw conveyor 17: Vertical transfer pipe 20a: First hopper 20b: Second hopper 21, 65: Discharge screw conveyor 26a, 26b: Inlet valve 29a, 29b: Outlet valve 30: Hot air generating furnace 31: Auxiliary upper screw conveyor 33: Auxiliary Lower screw conveyor 40: Carbonizer 41: Heating tank 43: Rotating shaft 44: Base blade 46: Heat transfer surface 50: Cooling machine 63: Supply screw conveyor 66a, 66b: Discharge valve 67: Screw conveyor

Claims (4)

Two hoppers with an inlet valve and an outlet valve that are charged and alternately opened and closed;
The carbonizing machine for carbonizing the object to be carbonized, the carbonizing machine connected to a supply screw conveyor for charging the object to be carbonized is attached to a rotating shaft provided at the center of a cylindrical heating tank. The carbonization object in which the carbonized object is pressed against the heat transfer surface of the inner periphery of the heating tank by centrifugal force by rotating a plurality of base blades, and a discharge screw conveyor that discharges the solidified carbonized is connected to the lower part. Machine,
Means for heating the heat transfer surface of the carbonizer;
Comprising a screw conveyor that cools solids carbonized by the carbonizer and discharges the cooled carbonized product, and a cooler having two upper and lower discharge valves that are connected downstream of the screw conveyor and opened and closed alternately,
The outlet valves of the two hoppers are respectively connected to the supply screw conveyor, and the carbonized material charged into the two hoppers is input to the carbonizer by the supply screw conveyor when the respective outlet valves are opened. And
Continuous carbonization apparatus characterized by continuously carbonizing the carbonized material supplied to the carbonizer through the supply screw conveyor by alternately introducing and discharging the carbonized material to and from the two hoppers. .   The continuous carbonization apparatus according to claim 1, wherein the means for heating the heat transfer surface of the carbonizer is a hot air generator. A drying apparatus for drying an input to-be-dried object, wherein the drying apparatus centrifuges the input to-be-dried object on a single stage or multiple stages, or on one or more base blades. An upper screw conveyor is connected to the upper part of the drying tank, and the upper screw conveyor is connected to the upper part of the drying tank so as to lead out the dried object scooped up by the rotation of the base blade. Is connected to a lower screw conveyor for feeding the material to be dried into the drying tank, and the material to be dried derived from the upper screw conveyor is transferred to the lower screw conveyor between the upper screw conveyor and the lower screw conveyor. to connected vertical transfer pipe, e immediately drying apparatus discharge screw conveyor for continuously discharging the material to be dried is connected,
The inlet valves of the two hoppers are connected to a discharge screw conveyor connected to the drying device via a pipe, and the objects to be dried that have been dried by the drying device are opened at the inlet valves of the two hoppers, respectively. Then, the continuous carbonization apparatus according to claim 1 or 2 , wherein the two hoppers are charged by the discharge screw conveyor and piping . The continuous carbonization apparatus according to claim 3, wherein the drying apparatus has at least one auxiliary upper screw conveyor and auxiliary lower screw conveyor on another outer surface of the drying tank to which the upper screw conveyor is connected.

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