Pyrolysis apparatus

Abstract

To provide a pyrolysis apparatus capable of reliably performing both carbonization treatment and exhaust gas treatment.SOLUTION: A pyrolysis apparatus comprises a primary treatment chamber 2 for pyrolysis of a cylindrical body 3 provided with an inlet port 4 for feeding organic material, and the primary treatment chamber 2 has a heating apparatus and heats the organic material fed from the inlet port 4 to perform carbonization treatment. An exhaust gas generated during the carbonization treatment in the primary treatment chamber 2 is led to a secondary treatment chamber 15 independent of the primary treatment chamber 2, and the exhaust gas is heat-treated in the secondary treatment chamber 15 to remove harmful substances. Furthermore, an exhaust passage 18 leading to a blower is provided downstream of the secondary treatment chamber, a platinum catalyst 21 is provided in the exhaust passage 18, and a filter is arranged downstream thereof.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This invention relates to a pyrolysis machine that carbonizes organic matter, thereby eliminating the emission of harmful substances such as dioxins, smoke, odors, and carbon monoxide. [Background technology]

[0002] Carbonization furnaces exist as a means of disposing of organic matter (especially used diapers). These furnaces thermally decompose the organic matter at high temperatures of over 800°C, preventing the generation of harmful substances such as dioxins, as well as smoke, odors, and carbon monoxide. Furthermore, by carbonizing the material, the amount of carbonized material can be greatly reduced, which has the advantage of reducing the burden of waste disposal.

[0003] In the carbonization furnace, organic matter is thermally decomposed, which generates tar and soot in the exhaust gas. These particles adhere to the inside of the exhaust pipe and the exhaust fan, causing a decrease in processing performance. This has the drawback of increasing maintenance costs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6534762 Summary of the Invention [Problem to be solved by the invention]

[0005] In order to ensure that carbonization and exhaust gas treatment can be carried out reliably, this invention separates the carbonization of organic matter from the treatment of exhaust gas, with the carbonization of organic matter being the primary treatment and the treatment of exhaust gas being the secondary treatment. [Means for solving the problem]

[0006] For this purpose, the present invention provides a method for producing a pyrolyzer having a cylindrical shape and a primary treatment chamber provided with an inlet for introducing organic matter, the primary treatment chamber having a heating device, and the organic matter introduced through the inlet is heated and carbonized, The exhaust gas generated during the carbonization process in the primary treatment chamber is introduced into a secondary treatment chamber independent of the primary treatment chamber, and the exhaust gas is heat-treated in the secondary treatment chamber to remove harmful substances, Further, an exhaust passage leading to a blower is provided downstream of the secondary treatment chamber, a platinum catalyst is provided in this exhaust passage, and a filter is provided downstream of the platinum catalyst.

[0007] In the primary treatment chamber, the organic matter is heated at high temperatures (around 400°C) for around eight hours under low-oxygen conditions using a heating device to evaporate the moisture and carbonize the matter. The exhaust gas generated during the carbonization process in the primary treatment chamber contains toxic dioxins, as well as smoke and odor. These are led to the secondary treatment chamber where they are heated to around 700 to 800 degrees Celsius and processed to become harmless, odorless, and smokeless. In addition, there is a platinum catalyst in the exhaust passage, which treats carbon monoxide harmlessly. A blower is installed downstream of the exhaust passage to suck in exhaust gas, and a filter is placed in front of the blower. The filter removes soot and dust, and at the same time, the flow velocity of the exhaust passage is controlled from 1.8 (m / s) to approximately 0.6 (m / s). This optimizes the retention time and ensures smooth combustion in the secondary treatment chamber.

[0008] The heating device installed in the primary treatment chamber is an electric heater that generates heat to about 400°C, and multiple heaters, for example four heaters, are installed radially in the radial direction. An external motor rotates a rotating rod below it, stirring and moving high alumina balls arranged around it up and down, thereby promoting the falling of carbide inside the primary treatment chamber. The stirring effect then makes the temperature inside the primary treatment chamber uniform, and the organic matter is pyrolyzed.

[0009] The secondary treatment chamber is equipped with numerous electric heaters, and the temperature inside the chamber is maintained at 700 to 800°C, thereby removing toxic substances such as dioxins and tar. Effect of the Invention

[0010] According to the invention of claim 1, the pyrolyzer is divided into a primary treatment chamber in which organic matter is fed and carbonized, and a secondary treatment chamber in which exhaust gas discharged from the primary treatment chamber is treated, thereby making it possible to reliably treat the carbonization of organic matter and the exhaust gas generated during the carbonization of organic matter.

[0011] By dividing the process and changing the internal temperature of the primary treatment chamber from 100°C to 400°C, the amount of electricity used by the electric heater could be reduced. By setting the heating temperature of the secondary treatment chamber at around 800°C, treatment could be started quickly and reliably, and harmful substances could be burned.

[0012] The filter installed upstream of the blower is located at the most downstream of the exhaust passage, so it is possible to control the exhaust flow rate (about 0.6 m / s) in the exhaust passage, and therefore the exhaust gas can be retained in the secondary treatment chamber for an optimal period of time, improving combustion efficiency and removing harmful substances from the exhaust gas and exhaust passage 18. Harmful substances (dioxins) are removed from the exhaust gas after secondary treatment that passes through this filter and from the ash after primary treatment, and the value is reduced to the legal standard of 5 (ng-TEQ / m 3 ) and was discharged in a safe state with exhaust gas of 2.9 and ash of 1.7. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a front view of the pyrolysis machine. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 1 is a schematic explanatory diagram of a thermal cracker according to the present invention. EXAMPLES

[0014] An embodiment of the pyrolyzer according to the present invention will be described below with reference to the drawings. In Fig. 1 to Fig. 4, the pyrolyzer 1 is divided into a primary treatment chamber 2 and a secondary treatment chamber 15. The primary treatment chamber 2 is a cylinder 3 having a diameter of about 780 mm and a height of about 750 mm. The inside of the cylinder 3 is hollow and has an inlet 4 at the top through which organic matter is put, and mainly used disposable diapers are put in. Disposable diapers contain a lot of moisture such as urine. An airtight lid 5 is provided on the inlet 4. 6 is a handle for opening the lid 5.

[0015] The electric heaters 8 are made of alloy and are provided below the cylinder 3, with four of them attached horizontally in a radial pattern. High alumina balls 9 arranged around the upper and lower periphery of these electric heaters function to store the heat of the electric heaters and transfer the heat evenly to the organic matter that is added. Then, the rotating rod 11 attached to the bottom of the high alumina bowl 9 is rotated by a rotating rod motor 12 at set intervals and times to move the carbide and promote the pyrolysis process. 13 is an outlet for ash.

[0016] The primary treatment chamber 2 constructed as described above is heated to a specified temperature by an electric heater 8, the organic matter is put in through the inlet 4, and the lid 5 is closed. At the same time, treatment begins. A rotating rod 11 installed below the high alumina balls 9 rotates for a few seconds at set intervals to move the high alumina balls, the organic matter, and promote the pyrolysis treatment. The treatment lasts for about eight hours, and the organic matter is carbonized under a low-oxygen condition. Once carbonized, its volume is reduced to about one-three-hundredth of its original size. Exhaust gas generated during the carbonization treatment in the primary treatment chamber 2 is sent to the secondary treatment chamber 15.

[0017] The secondary treatment chamber 15 is connected to the primary treatment chamber 2, and exhaust gas is introduced into it. The secondary treatment chamber 15 is a hollow cylinder, and electric heaters 16 are installed for heating. The temperature inside the secondary treatment chamber 15 is maintained at 700°C to 800°C with about 25 heaters. In this secondary treatment chamber 15, harmful substances are burned as they pass between the electric heaters 16.

[0018] An exhaust passage 18 leading to a blower 17 is connected downstream of the secondary treatment chamber 15. A filter 20 is provided at the very rear end of the exhaust passage 18, which removes soot and controls the flow rate of the exhaust gas in the exhaust passage 18. Since the flow rate is controlled here, the residence time of the exhaust gas is optimized, and combustion in the secondary treatment chamber 15 is carried out smoothly.

[0019] Furthermore, since a platinum catalyst 21 is provided in the exhaust passage 18, carbon monoxide is removed by this platinum catalyst 21. Reference numeral 23 denotes an outer box which encases the primary treatment chamber 2 and the secondary treatment chamber 15. [Explanation of symbols]

[0020] 1 Pyrolysis machine 2 Primary treatment room 3. Cylinder 4 Inlet 5 Lid 6 Handle 8 Electric heater 9. High alumina balls 11 Rotating rod 12 Rotary Rod Motor 13 Ash removal port 15 Secondary Treatment Room 16 Electric heater 17 Blower 18 Exhaust passage 20 Filters 21 Platinum catalyst 23 Outer box

Claims

1. a cylindrical primary treatment chamber for pyrolysis having an inlet for introducing organic matter, the primary treatment chamber having a heating device below, the organic matter introduced through the inlet being heated and carbonized; The exhaust gas is guided to a secondary treatment chamber independent of the primary treatment chamber, and the exhaust gas is heat-treated in the secondary treatment chamber to remove harmful substances; The thermal decomposition machine further comprises an exhaust passage leading to a blower on the downstream side of the secondary treatment chamber, a platinum catalyst being disposed in the exhaust passage and a filter being disposed downstream of the exhaust passage.

2. 2. The pyrolysis machine according to claim 1, characterized in that the heating device is an electric heater provided in a plurality of units arranged radially in the radial direction, a rotating rod is provided below the electric heater, the rotating rod is rotated by an external rotating rod motor, and high alumina balls are arranged around the electric heater and the rotating rod.

3. 2. The pyrolysis machine according to claim 1, wherein the secondary heat treatment chamber is provided with a number of electric heaters.

4. The filter is installed at the very end of the exhaust passage, and harmful substances are removed from the exhaust gas after secondary treatment and the ash after primary treatment that pass through this filter, and the value is 5 (ng-TEQ / m ３ 2.9% of exhaust gas and 1.7% of ash are discharged in a safe state for the following reasons:

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