JP2007119525A - Carbonizing furnace - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carbonizing furnace designed to be regulated at the set pressure, respectively in each region of a heating chamber divided into the plurality of regions and stably carry out each treatment such as drying and carbonization in the environment suitable for each. <P>SOLUTION: The carbonizing furnace comprises the heating chamber 3 having burners 6 and a tubular retort 5 slightly tilted in the heating chamber 3. The retort 5 is rotatably supported and heats a material W to be heated while moving the material W charged into the interior to be heated. The heating chamber 3 is divided into the plurality of regions in the longitudinal direction of the retort 5 with partition plates 13. Exhaust pipes 8 mounted on the retort 5 discharge a combustible gas produced from the heated material W to be heated into each region of the heating chamber 3. Each region is regulated to the set pressure, respectively by regulating the discharge of the gas from the interior of the divided regions with a pressure regulating apparatus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a carbonization furnace for carbonizing organic waste materials.

What is conventionally known as a carbonization furnace for carbonizing organic waste materials is a heating chamber heated by a plurality of burners, and a tubular tube that is slightly inclined and rotatably supported in the heating chamber. There are some with retort. In this type of carbonization furnace, organic waste material (object to be heated) is put inside the retort, the retort is rotated, and the organic waste material deposited on the bottom is moved in the axial direction, dried, carbonized. ing.
In such a carbonization furnace, the organic waste material is dried and carbonized in order in the length direction of the retort in one retort, and in order to obtain a temperature suitable for each step of the drying and carbonization. Conventionally, there is one in which a heating chamber is divided into a plurality of partitions by a partition plate (see, for example, Patent Document 1).

Japanese Patent No. 3086450

In the process of carbonizing the organic waste material, combustible gas is generated from the organic waste material. Therefore, conventionally, it is necessary to insert exhaust pipes at a plurality of locations on the tube wall of the retort and exhaust the combustible gas generated inside the retort to the heating chamber through the exhaust pipe.
When such an exhaust pipe is provided in the retort of the carbonization furnace described in Patent Document 1, combustible gas is discharged into each partitioned region, and the pressure in each region becomes unstable due to the influence of this combustible gas. . As a result, the processing environment in each partitioned region becomes unstable, and there is a problem in that each treatment of drying and carbonization of the organic waste material cannot be performed sufficiently.

  Accordingly, the present invention provides a carbonization furnace that can be adjusted to a pressure set in each region of a heating chamber divided into a plurality of sections and can stably perform each process in a suitable process environment. With the goal.

  The carbonization furnace according to the present invention includes a heating chamber in which the room is heated by a heating means, and the heating chamber that is rotatably introduced into the heating chamber and moves an object to be heated put in the chamber while rotating. The tubular retort that heats the object to be heated by the heat in, the partition plate that divides the heating chamber into a plurality of regions in the longitudinal direction of the retort, and the retort that is heated by communicating inside and outside The exhaust pipes for discharging the combustible gas generated from the object to be heated to the respective regions of the heating chamber and the respective regions are set by adjusting the discharge of the gas from the partitioned regions for each region. And a pressure adjusting device for adjusting the set pressure.

  According to this configuration, the object to be heated can be heated and carbonized inside the retort, and combustible gas generated from the object to be heated at the time of the carbonization process is discharged to each region of the heating chamber by the exhaust pipe. be able to. Then, the pressure adjusting device adjusts the discharge of the gas from the partitioned areas for each area, so that the pressure in each area can be adjusted to the set pressure. Therefore, in each area divided into a plurality of heating chambers, it can be adjusted to a set pressure, and can be set to a temperature suitable for each process. Each can be performed stably in a suitable processing environment.

In addition, the pressure adjusting device includes a pressure detecting unit that detects a pressure in the partitioned area, an exhaust unit that forcibly discharges the gas from each area, and adjusts each area to the set pressure. It is preferable to have control means for controlling the output of the exhaust means in accordance with the detection result from the pressure detection means.
According to this configuration, the gas can be forcibly discharged from each region to the outside by the exhaust means. The pressure detection means detects the pressure in the sectioned area, and the control means controls the output of the exhaust means according to the detection result, so that the pressure in each area can be individually adjusted to the set pressure. .

  In the carbonization furnace, it is preferable that each of the divided regions is connected to a single exhaust means. According to this, since it is not necessary to connect exhaust means for each partitioned region, the structure of the carbonization furnace can be simplified, and the cost of the apparatus can be reduced.

In addition, the pressure adjusting device includes a restricting unit that restricts discharge of the gas from each region for each region, and the pressure detecting unit is provided only in one of the partitioned regions. The control means preferably controls the pressure in the other region using the detection result of the pressure detection means and the limit value of the gas discharge by the restriction means in each region.
In this case, one area where the pressure detection means is provided can be adjusted to the set pressure based on the detection result of the pressure detection means. Further, the pressure in the other region is controlled by using the detection result of the pressure detection means and the limit value of gas discharge by the restriction means. That is, since the limiting value of gas discharge in each region corresponds to the pressure in each region by the limiting unit, the limiting value by the limiting unit in each region is set to a predetermined value, so that one region From the detection result of the pressure detection means, the pressure in another region can be calculated and obtained. Therefore, the pressure detection means need only be provided in one of the partitioned areas. Thus, the pressure detection means is provided only in one region, and the control means can control the output of the exhaust means according to the detection result from one pressure detection means, so that the structure and control are simplified.

  According to the carbonization furnace of the present invention, each region can be adjusted to a set pressure set for each region, and a temperature suitable for each step can be obtained. Accordingly, each treatment such as drying and carbonization of the object to be heated can be stably performed in a suitable treatment environment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall schematic view showing an embodiment of a carbonization furnace according to the present invention, and FIG. 2 is a schematic view showing a main part of the carbonization furnace.
The carbonization furnace of the present invention is to heat and dry an organic waste material (object to be heated) W and carbonize it to obtain a carbide, and as the organic waste material W, for example, a plant trunk that has become unnecessary is crushed. There is.

First, the whole furnace body 1 which this carbonization furnace has is demonstrated with FIG. 1 and FIG.
The furnace body 1 has a heating chamber 3 serving as an upper primary combustion chamber and a lower secondary combustion chamber 4 sandwiching a horizontal hearth 2. The heating chamber 3 is divided into three regions. The heating chamber 3 has a burner (heating means) 6 on the hearth 2, and the secondary combustion chamber 4 has a burner 16 on the floor surface of the furnace body 1. The heating chamber 3 and the secondary combustion chamber 4 communicate with each other through a plurality of suction holes 17 provided in the hearth 2, and a damper 18 for adjusting the opening degree of each suction hole 17 is provided on the heating chamber 3 side. It has been. And in this heating chamber 3, the circular retort 5 in which the axis line inclines slightly is provided.

  The retort 5 is inserted through the heating chamber 3 with its axis slightly inclined. Furthermore, the retort 5 is rotatably supported by the furnace body 1. Although not shown, a sprocket is attached to the retort 5 outside the furnace body 1, and a power source such as a motor included in the carbonization furnace rotates the sprocket with a chain, so that the retort 5 is within the heating chamber 3. Can rotate in one direction.

  The retort 5 that is long in the axial direction has an input portion 11 that inputs the organic waste W into the retort 5 on one end side (the left side in FIGS. 1 and 2) outside the heating chamber 3. On the end side (right side), there is a discharge portion 12 for discharging carbide (activated carbon) obtained by carbonizing the input organic waste W. In addition, if the attitude | position of this retort 5 is demonstrated further, the axis line will incline slightly downward toward the said discharge part 12 side from the said injection | throwing-in part 11 side. Therefore, by rotating the retort 5, the organic waste W that has been thrown in from the throwing portion 11 and deposited on the bottom portion of the retort 5 slides along the inner surface 5 a of the tube wall of the retort 5 to the discharge portion 12 side. Can move. Thereby, in the rotating retort 5, the organic waste material W can be heated and carbonized by the heat in the heating chamber 3 while moving from one end side in the longitudinal direction of the retort 5 to the other end side.

Next, details of each component will be described.
FIG. 3 is a view showing almost half of the upstream side of the retort 5, and FIG. 4 is a cross-sectional view of the retort 5. 2 to 4, a plurality of exhaust pipes 8 are attached to the retort 5, and the exhaust pipes 8 communicate with the inside and outside of the retort 5. The combustible gas generated when the organic waste material W is heated and carbonized is discharged into the heating chamber 3 through the exhaust pipe 8. The combustible gas discharged into the heating chamber 3 is combusted by the burner 6, and the heat generated by the combustion can be used to heat the organic waste material W through the retort 5. Further, the exhaust gas generated by the combustion of the combustible gas by the burner 6 is discharged from the heating chamber 3 to the secondary combustion chamber 4 through the damper 18, and the exhaust gas is subjected to secondary combustion by the burner 16 of the secondary combustion chamber 4 to deodorize, Smoke is removed and discharged to the outside of the furnace body 1.

  The heating chamber 3 is partitioned into a plurality of heating regions by a partition plate 13 standing in the vertical direction. 1 and 2, the heating chamber 3 is divided into three heating regions (small heating chambers) in the longitudinal direction of the retort 5 by two partition plates 13, and a first organic waste material W is mainly dried from the left side. It is divided into a region (dry region) 21, a second region (carbonized region) 22 to be carbonized, and a third region (activated region) 23 to be activated into activated carbon. These three regions 21, 22, and 23 communicate with one common secondary combustion chamber 4.

  The retort 5 penetrates the left and right walls of the heating chamber 3 and the partition plates 13, and the organic waste material W put in the retort 5 is dried, carbonized, and activated to activated carbon by a single carbonization furnace. . Further, five exhaust pipes 8 are provided at intervals in the axial direction of the retort 5. In FIG. 2, two exhaust pipes 8 are provided in the first region 21, two in the second region 22, and in the third region. One combustible gas generated in the retort 5 is discharged to each of the regions 21, 22 and 23. Further, in FIGS. 3 and 4, these exhaust pipes 8 are provided with a phase difference of 90 ° in the circumferential direction in order from the upstream side. The exhaust pipe 8 is attached to the tube wall of the retort 5 so as to extend radially outward from the center of the retort 5 through the tube wall to the outside.

  The areas 21, 22, and 23 in which the heating chamber 3 is partitioned are set so as to have different temperatures, and are suitable for drying, carbonizing, and activating the organic waste material W in these areas 21, 22, and 23. (Optimum) temperature. For example, the temperature of the second region 22 is set higher than that of the first region 21, the temperature of the third region 23 is set higher than that of the second region 22, the first region 21 is set to 450 ° C., and the second region 22 is set. Is 750 ° C., and the third region 23 is 850 ° C. These temperatures can be controlled by controlling the output of the burner 6 based on the detection results of temperature sensors (not shown) provided in the respective areas 21, 22 and 23.

Furthermore, each pressure (internal pressure) of these areas 21, 22, and 23 is set to a set pressure suitable for performing drying, carbonization, and activation of the organic waste material W, respectively. And adjustment of the pressure of each area | region 21, 22, 23 is performed with the pressure regulator with which the carbonization furnace is equipped. The pressure adjusting device can adjust each region 21, 22, and 23 to a set pressure by adjusting gas discharge from the partitioned regions 21, 22, and 23, respectively.
Therefore, according to the carbonization furnace according to this embodiment, each of the regions 21, 22, and 23 is adjusted to have a set constant pressure and can be set to a temperature suitable for each process. The drying, carbonization and activation treatment of W can be performed stably under a suitable pressure.

  The pressure adjusting device will be described with reference to FIG. 1. The pressure adjusting device includes a pressure detecting means 42 for detecting pressure in at least one of the divided regions 21, 22 and 23, and each of the regions 21, 22 and 23. In order to adjust each region 21, 22, and 23 to a set pressure, a restricting means 43 that restricts the discharge of each gas, an exhaust means 44 that forcibly discharges gas from each region 21, 22, and 23 to the outside. And control means 45 for controlling the output of the exhaust means 44 in accordance with the detection result from the pressure detection means 42.

Specifically, the pressure detection means 42 is a pressure sensor. The pressure sensor 42 is provided only inside the third region 23, measures the pressure in the third region 23, and sends the measured value to the control means 45.
The restricting means 43 includes the suction hole 17 and the damper 18 formed in the hearth 2, and these include the three divided regions 21, 22, 23 and the secondary combustion chamber 4. It is provided in between. The suction port 17 is a hole penetrating the hearth 2 and has the same diameter. The damper 18 adjusts the opening degree of each suction port 17, and can restrict the discharge of gas from each of the areas 21, 22, and 23 according to the opening degree. As a result, exhaust gas can be discharged from the regions 21, 22, 23 into the secondary combustion chamber 4 through the dampers 18 having a predetermined opening degree.

The exhaust means 44 is an electric blower connected to the exhaust port 4a of the secondary combustion chamber 4 through a pipe. The blower 44 sucks the gas in the secondary combustion chamber 4 so that the exhaust gas in each region 21, 22, 23 can be discharged into the secondary combustion chamber 4 through the damper 18. The exhaust gas in the secondary combustion chamber 4 can be forcibly discharged to the outside of the furnace body 1.
Also, the blower 44 is a single unit, and the divided areas 21, 22, and 23 are connected to the single blower 44 through the common secondary combustion chamber 4. Thereby, since it is not necessary to connect the blower 44 for every divided area | region 21, 22, and 23, the structure of a carbonization furnace can be simplified and the cost reduction of an apparatus can be aimed at.

  The control means 45 controls the rotational speed (strength) of the blower 44 based on the detection result (measured value) from the pressure sensor 42. The blower 44 is operated at a predetermined number of revolutions by the control means 45, and the pressure in the partitioned areas 21, 22, and 23 is made equal to or lower than the pressure in the retort 5 by suction of the blower 44. The control means 45 adjusts the strength of the blower 44 by controlling the number of rotations of the blower 44 based on the detection result from the pressure sensor 42, and adjusts the discharge of gas from each of the areas 21, 22, and 23. By doing so, the inside of each of the regions 21, 22, and 23 can be adjusted to be constant at a predetermined set pressure. Moreover, the internal pressure in these area | regions 21, 22, and 23 can be varied by adjusting the opening degree of the damper 18 provided in each of the 1st area | region 21, the 2nd area | region 22, and the 3rd area | region differently.

The control of the pressure in each of the areas 21, 22, and 23 performed by the control means 45 will be specifically described. The set pressure controlled to be constant by the control means 45 is, for example, −15 Pa (gauge pressure: the same applies hereinafter) in the first region 21, −10 Pa in the second region 22, and −4 Pa in the third region 23. In this case, the pressure in the retort 5 is set to −4 Pa.
The rotational speed control of the blower 44 by the control means 45 is performed based on the detection result (measured value) from the pressure sensor 42 provided only in the third region 23. That is, the rotation speed of the blower 44 is controlled in the range of 5 to 55 Hz so that the pressure value in the third region 23 becomes −4 Pa which is the value of the set pressure. Specifically, when the measured value of the pressure sensor 42 provided in the third region 23 is larger than −4 Pa, the rotational speed of the blower 44 is increased. For example, when the measured value is 0 Pa, the rotational speed of the blower 44 is 50 Hz. Conversely, when the measured value of the pressure sensor 42 is smaller than −4 Pa, the rotational speed of the blower 44 is decreased. For example, when the measured value is −15 Pa, the rotation speed of the blower is 5 Hz. In addition, when the measured value of the pressure sensor 42 is −4 Pa, the rotation speed of the blower 44 is maintained as it is. Thereby, the pressure in the third region 23 can be kept at the set pressure.

  In addition, the control of the pressure for the first region 21 and the second region 22, which are other regions, is carried out by the control means 45 in the measured values of the pressure sensor 42 in the third region 23 and the partitioned regions 21, 22, 22. 23, the limit value of the gas discharge by the limiting means 43, that is, the opening degree of the damper 18 can be controlled. That is, when the opening degree of the damper 18 in each region is set to a predetermined value, the pressure in the first region 21 and the second region 22 is calculated from the measured value of the pressure sensor 42 in the third region 23. Can do. Specifically, the opening degree of the damper 18 is set differently, for example, 80% in the first region 21, 60% in the second region 22, and 20% in the third region 23, and a single ( Gas is sucked from each of the regions 21, 22 and 23 through the secondary combustion chamber 4 (common). Thereby, in each area | region 21, 22, 23, the flow volume of the gas in the damper 18 (suction hole 17) differs, and an internal pressure differs, respectively. When the opening degree of each damper 18 is set to a predetermined value as described above, the opening degree and the pressure in each of the regions 21, 22, and 23 have a correlation according to a predetermined ratio. Accordingly, since the measured pressure value in the third region 23 is measured by the pressure sensor 42, the pressure in the other first region 21 and the second region 22 is obtained by calculation by the control means 45.

  Thus, since the control means 45 should just control the rotation speed of the blower 44 by the detection result from the pressure sensor 42 provided only in one 3rd area | region 23, the control and structure become simple. Then, the pressure in the third region 23 provided with the pressure sensor 42 can be adjusted to the set pressure, and further, by adjusting the opening degree in the damper 18, the other first region 21 and second region 22. Can be adjusted to the set pressure.

  According to the carbonization furnace as described above, the organic waste material W can be heated and carbonized inside the retort 5. The heating chamber 3 is partitioned by the partition plate 13, and the combustible gas generated by the heating is discharged to each of the regions 21, 22 and 23 partitioned through the exhaust pipe 8. Then, the blower 44 whose rotational speed is controlled by the control device 45 sucks the gas in each partitioned area 21, 22, 23, thereby setting the pressure in each area 21, 22, 23, respectively. It can be adjusted to the set pressure. Accordingly, the drying, carbonization, and activation of the organic waste material W in the retort 5 can be performed under appropriate pressure in each of the regions 21, 22, and 23, and the temperature can be adjusted to be suitable for each step. Thus, the carbonization of the organic waste material W can be performed stably.

In the carbonization furnace of the present invention, as shown in FIG. 3, a stirring member 7 that scoops up and stirs the organic waste W that has been charged and deposited is attached inside the retort 5.
FIG. 5 is a cross-sectional view showing a portion of the retort 5 to which the stirring member 7 is attached, as viewed from the upstream side. The agitating member 7 has a plurality of agitating plates 9, and in FIG. 5, four agitating plates 9a, 9b, 9c, 9d are provided at equal pitches around the axis (in the circumferential direction). Each stirring plate 9 is a rectangular flat plate member, and both end edges in the longitudinal direction of the stirring plate 9 are fixed to the tube wall inner surface 5 a of the retort 5. The longitudinal direction of the stirring plate 9 corresponds to the circumferential direction of the retort 5, and the direction orthogonal to the longitudinal direction of the stirring plate 9 is a direction parallel to the axial direction of the retort 5. Each of the stirring plates 9 is opposed to a part of the tube wall inner surface 5a of the retort 5, and a pair of four stirring plates 9a and 9c are opposed to each other with the center of the retort 5 interposed therebetween. A pair of stirring plates 9b and 9d are opposed to each other across the center of the retort 5. Also, the pair of stirring plates 9a and 9c and the other pair of stirring plates 9b and 9d are provided in the retort 5 while being displaced in the axial direction (see FIG. 3). That is, the stirring plates 9 adjacent to each other in the circumferential direction are attached while being displaced in the axial direction.
Further, as shown in FIG. 5, the adjacent stirring plates 9 are provided so as to intersect each other in the longitudinal direction end portion, and have a cross beam structure. Thereby, the organic waste material W can be continuously scooped up and stirred.

Further, each of the stirring plates 9 has a guide plate 10 erected toward the tube wall inner surface 5 a side of the retort 5. The guide plate 10 is a plate-like member orthogonal to the stirring plate 9 and is erected from the end of the stirring plate 9 on the downstream side in the moving direction of the organic waste material W toward the inner wall surface 5 a of the retort 5. Thereby, the guide board 10 can suppress that the organic waste material W scooped up by the stirring board 9 falls to the bottom part of the retort 5 immediately.
Further, as shown in FIG. 5, the guide plate 10 is not provided over the entire length of the stirring plate 9 in the longitudinal direction. For example, in the stirring plate 9a, the end e on the rear side in the rotation direction of the retort 5 is used as the starting point. The middle part g is passed through the middle part f and the end point is set. In FIG. 5, an arrow R indicates the rotation direction of the retort 5. That is, the guide plate 10 is shorter than the longitudinal dimension of the stirring plate 9. As a result, the downstream end portion of the stirring plate 9 is formed with a portion where the guide plate 10 is present and a notch portion 14 where the guide plate 10 is not present. The organic waste material W moved in the direction by a predetermined angle can be dropped from the notch 14 to the retort 5, and the organic waste material W can be efficiently stirred in a wide range in the entire retort 5.
Thereby, the organic waste W deposited on the bottom of the retort 5 is scooped up and stirred. The combustible gas generated from the inside of the accumulated organic waste W can also be discharged to the outside, and this combustible gas can be efficiently discharged to the heating chamber 3 through the exhaust pipe 8. Further, since the stirring member 7 is provided in the vicinity of the exhaust pipe 8, the combustible gas generated from the organic waste material W can be quickly discharged to the heating chamber 3.
Moreover, the organic waste material W can be efficiently dried and carbonized by scooping up, dropping and stirring the accumulated organic waste material W.

Further, since the four stirring plates 9 are provided in a cross-girder shape while being displaced in the axial direction from the adjacent stirring plates 9, each of the stirring plates 9 is moved to the bottom by rotating the retort 5. The accumulated organic waste W can be continuously stirred up to scoop up, and the combustible gas emitted from the organic waste W can be efficiently discharged.
As described above, when the retort 5 rotates about its axis, the stirring member 7 rotates integrally with the retort 5 and can stir the organic waste material W deposited on the bottom. Further, the retort 5 rotates around its axis in a slightly inclined posture toward the discharge part 12 (see FIG. 2), whereby the organic waste material W is stirred by the stirring member 7 and the tube wall inner surface 5a of the retort 5 is stirred. Can be slid and moved to the discharge unit 12 side. The discharge part 12 side of the retort 5 is the downstream side in the moving direction of the organic waste material W, and the opposite input part 11 side is the upstream side.

The stirring member 7 is provided in the vicinity of the exhaust pipe 8. Specifically, when the inner diameter of the retort 5 is about 500 mm and the diameter of the exhaust pipe 8 is about 80 mm, the stirring member 7 is separated from the center line of the exhaust pipe 8 by 100 mm to 500 mm in the axial direction. It is provided within a close range.
The stirring member 7 may be provided in the vicinity of each of the exhaust pipes 8, or may be provided in the vicinity of some of the exhaust pipes 8. In FIGS. 2 and 3, the four exhaust pipes 8 on the upstream side in the moving direction of the organic waste material W are provided with the agitating members 7 at positions near the upstream side.

Further, according to the carbonization furnace of the present invention, the combustible gas generated from the organic waste W inside the retort 5 is discharged into the heating chamber 3 through the exhaust pipe 8, and this combustible gas is burned by the burner 6 of the heating chamber 3. Heat can be used to heat the organic waste W. Thereby, it can be set as a carbonization furnace with high energy efficiency.
Furthermore, since the heating chamber 3 and the secondary combustion chamber 4 are integrated vertically with the hearth 2 interposed therebetween, loss due to heat radiation from each other can be reduced, and an energy-saving carbonization furnace can be obtained.

Further, the carbonization furnace of the present invention is not limited to the illustrated form, but may be of other forms within the scope of the present invention, and the pressure sensor 42 has been described as being provided only in the third region 23. However, the present invention is not limited to this, and as another embodiment, one pressure sensor 42 may be provided in the first region 21 or the second region 22.
As another embodiment, although not shown, the pressure sensor 42 may be provided in each of the first region 21, the second region 22, and the third region 23. In this case, the measurement values from the three pressure sensors 42 are input to one control device 45, and the control device 45 controls the output of the single blower 44 based on the measurement values of the areas 21, 22, and 23. May be.
Further, the blower 44 may be provided for each of the areas 21, 22, and 23. In this case, the three pressure sensors 42 are connected to the control means 45, and the internal pressure is controlled independently for each of the areas 21, 22 and 23 by the three blowers 44 based on the detection results of the respective pressure sensors 42. It may be configured to do.
As yet another embodiment, the opening degree of the damper 18 can be adjusted manually, or can be automatically adjusted by a command signal from the control means 45. .

1 is an overall schematic view showing an embodiment of a carbonization furnace according to the present invention. It is a schematic diagram which shows the principal part of this carbonization furnace. It is a figure which shows the half of the upstream of a retort. It is a cross-sectional view of the retort for demonstrating an exhaust pipe. It is a cross-sectional view of the retort which shows the part to which the stirring member is attached.

Explanation of symbols

1 furnace body 3 heating chamber 5 retort 6 burner (heating means)
8 Exhaust pipe 13 Partition plate 21 1st area 22 2nd area 23 3rd area 42 Pressure detection means 43 Limiting means 44 Exhaust means 45 Control means W Organic waste material (object to be heated)

Claims (4)

A heating chamber in which the room is heated by heating means;
A tubular retort that is rotatably introduced into the heating chamber and that heats the object to be heated by the heat in the heating chamber while moving the object to be heated that is introduced into the heating chamber with rotation,
A partition plate dividing the heating chamber into a plurality of regions in the longitudinal direction of the retort;
An exhaust pipe that discharges combustible gas generated from the heated object in communication with the inside and outside of the retort to each region of the heating chamber;
A carbonization furnace comprising: a pressure adjusting device that adjusts each area to a set pressure set to each area by adjusting the discharge of gas from each partitioned area for each area; .   The pressure adjusting device includes pressure detecting means for detecting the pressure in the divided areas, exhaust means for forcibly discharging the gas from the areas, and adjusting the areas to the set pressure. The carbonization furnace according to claim 1, further comprising a control unit that controls an output of the exhaust unit according to a detection result from the pressure detection unit.   The carbonization furnace according to claim 2, wherein each of the divided regions is connected to a single exhaust means.   The pressure adjusting device includes a restricting unit that restricts the discharge of gas from each region for each region, and the pressure detecting unit is provided only in one of the partitioned regions. The carbonization according to claim 2 or 3, wherein the control means controls the pressure in another region using a detection result of the pressure detection means and a limit value of gas discharge by the limiting means in each region. Furnace.

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