A discharging device

Abstract

The present invention discloses a discharging device, comprising: a pyrolysis furnace having an organic solid waste inlet and a pyrolysis solid waste outlet for pyrolyzing organic solid waste and generating slag and pyrolysis gas; a transmission discharging structure having a transmission cavity, a slag inlet and a slag outlet, wherein the slag inlet is arranged near the pyrolysis solid waste outlet, the slag inlet and the pyrolysis solid waste outlet are in sealed communication, and the slag outlet is provided with a slag outlet valve; a pyrolysis gas discharge device, arranged outside the transmission discharging structure, having a pyrolysis gas inlet and a pyrolysis gas outlet, the pyrolysis gas inlet being in sealed communication with the slag inlet and the pyrolysis solid waste outlet; the transmission discharging structure is used to transmit the slag to the slag outlet, so that after the slag fills the transmission cavity, the pyrolysis gas is squeezed into the pyrolysis gas discharge device and the temperature in the pyrolysis gas discharge device is maintained, and then the slag outlet valve is opened to discharge the slag. The discharging device of the embodiment of the present invention can simplify equipment, reduce pyrolysis oil in the slag, and improve operating efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field related to pyrolysis of organic solid waste, and in particular to a discharging device. Background Art

[0002] After pyrolysis of organic solid waste, pyrolysis gas and slag are discharged. The pyrolysis gas is then further condensed and separated to produce pyrolysis oil, pyrolysis water, and non-condensable gases. Each pyrolysis product is then processed separately. When discharging slag and pyrolysis gas, some of the pyrolysis oil condenses into the slag, resulting in waste of pyrolysis products. The existing approach is to re-separate the slag afterwards, requiring additional separation equipment, resulting in complex structures and low operational efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a discharging device that can simplify the equipment, reduce the pyrolysis oil in the slag, and improve the operation efficiency.

[0004] The discharging device according to an embodiment of the present invention includes:

[0005] a pyrolysis furnace having an organic solid waste inlet and a pyrolysis solid waste outlet, the pyrolysis furnace being used to pyrolyze the organic solid waste input through the organic solid waste inlet and generate slag and pyrolysis gas which are discharged through the pyrolysis solid waste outlet;

[0006] a transmission discharging structure having a transmission cavity, and a slag inlet and a slag outlet respectively located at two ends of the transmission cavity, wherein the slag inlet is arranged near the pyrolysis solid waste outlet, and the slag inlet is in closed communication with the pyrolysis solid waste outlet, and the slag outlet is provided with a slag outlet valve;

[0007] A pyrolysis gas discharge device is arranged outside the transmission discharging structure. The pyrolysis gas discharge device has a pyrolysis gas inlet and a pyrolysis gas outlet. The pyrolysis gas inlet is closed and connected with the slag inlet and the pyrolysis solid waste outlet. The transmission discharging structure is used to transmit the slag falling from the slag inlet to the slag outlet, so as to squeeze the pyrolysis gas into the pyrolysis gas discharge device after the slag fills the transmission cavity and maintain the temperature inside the pyrolysis gas discharge device, and then open the slag outlet valve to discharge the slag.

[0008] The discharging device according to the embodiment of the present invention has at least the following beneficial effects:

[0009] Before starting the pyrolysis furnace, first close the slag outlet valve so that the transmission discharging structure is in a closed state. The slag generated by the pyrolysis of organic solid waste in the pyrolysis furnace is discharged from the pyrolysis solid waste outlet and introduced into the slag inlet through the guide plate in the pyrolysis furnace, and is transmitted to the slag outlet through the transmission discharging structure. Part of the generated pyrolysis gas enters the pyrolysis gas discharge device outside the transmission discharging structure, while the other part enters the transmission discharging structure. After the slag fills the transmission cavity, the pyrolysis gas that has entered the transmission discharging structure will be squeezed out from the slag inlet and enter the pyrolysis gas discharge device. The slag temperature in the closed transmission discharging structure can be maintained at a high temperature, thereby preventing the pyrolysis oil from condensing in the slag and ensuring the temperature inside the pyrolysis gas discharge device. The discharging device of the embodiment of the present invention can simplify the equipment, reduce the pyrolysis oil in the slag, and improve operating efficiency.

[0010] According to some embodiments of the present invention, the transmission discharging structure includes:

[0011] A discharge shell having a slag inlet and a slag outlet at both ends thereof, the slag inlet being arranged close to the pyrolysis solid waste outlet, the slag inlet being in sealed communication with the pyrolysis solid waste outlet, and the slag outlet being provided with the slag outlet valve;

[0012] A transmission device is provided in the discharge shell, and a slag collecting chamber is formed between the transmission device and the discharge shell. The transmission device is used to transmit the slag falling from the slag falling inlet to the slag external discharge outlet, so as to squeeze the pyrolysis gas into the pyrolysis gas discharge device and maintain the temperature inside the pyrolysis gas discharge device after the slag fills the slag collecting chamber, and then open the slag outlet valve to discharge the slag.

[0013] According to some embodiments of the present invention, the transmission device adopts a spiral discharging structure.

[0014] According to some embodiments of the present invention, the pitch of the spiral blades of the spiral discharging structure on a side close to the slag inlet is greater than the pitch of the spiral blades on a side away from the slag inlet.

[0015] According to some embodiments of the present invention, the pyrolysis gas discharge device includes:

[0016] An outer sleeve is provided outside the transmission discharging structure, and an inlet of the outer sleeve is in sealed communication with the slag inlet and the pyrolysis solid waste outlet;

[0017] A gas-solid separation device is arranged outside the transmission discharging structure. The gas-solid separation device has a gas inlet, a gas outlet and a solid outlet. The gas inlet is connected to the outlet of the outer sleeve and the gas inlet is located in the middle of the side wall of the gas-solid separation device. The gas outlet is located at the top of the gas-solid separation device, and the solid outlet is located at the bottom of the gas-solid separation device. The gas-solid separation device is used to perform gas-solid separation on the pyrolysis gas.

[0018] According to some embodiments of the present invention, the gas-solid separation device includes:

[0019] An air separation bag is provided outside the transmission discharging structure, and has a separation inlet, a gas separation outlet, and a solid separation outlet. The separation inlet is connected to the outlet of the outer sleeve and is located in the middle of the side wall of the air separation bag. The gas separation outlet is located at the top of the air separation bag, and the solid separation outlet is located at the bottom of the air separation bag.

[0020] A filtering device is provided in the gas separation bag, and is used for performing gas-solid separation on the pyrolysis gas.

[0021] According to some embodiments of the present invention, the filtering device adopts an inclined tube filtering structure, which is open at both ends, the bottom of the inclined tube filtering structure is located above the separation inlet and is arranged close to the opposite side of the separation inlet, and the top of the inclined tube filtering structure is arranged close to the gas separation outlet and the separation inlet.

[0022] According to some embodiments of the present invention, the inclined tube filtration structure includes a plurality of thin plate inclined tubes, which are spliced ​​in sequence through the tube wall, each of the thin plate inclined tubes is open at both ends, the bottom of each thin plate inclined tube is located above the separation inlet and is arranged close to the opposite side of the separation inlet, and the top of each thin plate inclined tube is arranged close to the gas separation outlet and the separation inlet.

[0023] According to some embodiments of the present invention, the filtering device adopts a coil filter structure, which has openings at both ends, the bottom opening of the coil filter structure is arranged opposite to the separation inlet, and the top opening of the coil filter structure is arranged close to the gas separation outlet.

[0024] According to some embodiments of the present invention, the filtering device adopts a filter screen, which is located above the separation inlet and connected to the inner wall of the gas separation bag.

[0025] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a discharging device according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] Pyrolysis furnace 100;

[0030] Discharge housing 210, slag outlet valve 211, transmission device 220;

[0031] Outer sleeve 310 , air distribution bag 321 , and filtering device 322 . DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The following will be combined Figure 1 A clear and complete description is given of the discharge device of the embodiment of the present invention. Obviously, the embodiment described below is only a part of the embodiment of the present invention, not all the embodiments.

[0037] The discharging device according to the embodiment of the present invention includes a pyrolysis furnace 100, a transmission discharging structure, and a pyrolysis gas discharge device.

[0038] The pyrolysis furnace 100 has an organic solid waste inlet and a pyrolysis solid waste outlet. The pyrolysis furnace 100 is used to pyrolyze the organic solid waste input through the organic solid waste inlet and generate slag and pyrolysis gas, which are discharged through the pyrolysis solid waste outlet.

[0039] The transmission discharging structure comprises a transmission cavity, and a slag inlet and a slag outlet respectively located at both ends of the transmission cavity. The slag inlet is arranged close to the pyrolysis solid waste outlet, and the slag inlet and the pyrolysis solid waste outlet are in closed communication. The slag outlet is provided with a slag outlet valve 211.

[0040] The pyrolysis gas discharge device is arranged outside the transmission discharging structure. The pyrolysis gas discharge device has a pyrolysis gas inlet and a pyrolysis gas outlet. The pyrolysis gas inlet is closed and connected with the slag inlet and the pyrolysis solid waste outlet. The transmission discharging structure is used to transmit the slag falling from the slag inlet to the slag outlet, so as to squeeze the pyrolysis gas into the pyrolysis gas discharge device after the slag fills the transmission cavity and maintain the temperature inside the pyrolysis gas discharge device, and then open the slag outlet valve 211 to discharge the slag.

[0041] A portion of the transmission discharging structure on the side of the slag inlet is provided in the pyrolysis furnace 100 and is sealed and connected to the pyrolysis furnace 100. The slag inlet is sealed and connected to the pyrolysis solid waste outlet. The pyrolysis gas discharge device is provided outside the transmission discharging structure, and its pyrolysis gas inlet is sealed and connected to the slag inlet and the pyrolysis solid waste outlet, so that the slag and pyrolysis gas generated after the pyrolysis of organic solid waste in the pyrolysis furnace 100 will not leak into the air. The slag outlet is located on the side away from the slag inlet and is provided below the transmission discharging structure so that the slag can be discharged under the action of gravity. However, the slag outlet can also be provided at the end of the transmission discharging structure away from the slag inlet, opening in the horizontal direction, so that the slag can be discharged smoothly. This cannot be regarded as a limitation of the present invention.

[0042] It should be noted that the transmission and discharge structure may not be partially disposed in the pyrolysis furnace 100 and may be directly connected through a pipeline, as long as the transmission and discharge structure can be closed and connected to the pyrolysis furnace 100, which cannot be regarded as a limitation of the present invention.

[0043] The length of the transmission path in the transmission discharging structure can be determined according to actual needs, as long as it can ensure that after the slag fills the transmission cavity, the pyrolysis gas entering the transmission discharging structure will be squeezed out from the slag inlet and enter the pyrolysis gas discharge device. No limitation is given here.

[0044] The transmission discharging structure and the pyrolysis gas discharge device are both made of heat-resistant materials, which can be selected according to actual needs and are not limited here.

[0045] like Figure 1As shown, before starting the pyrolysis furnace 100, the slag outlet valve 211 is closed, and then the pyrolysis furnace 100 is started. There is a guide plate in the pyrolysis furnace 100. The pyrolysis furnace 100 rotates in the reverse direction in the early stage, and the organic solid waste is continuously pyrolyzed to produce pyrolysis gas and slag. The pyrolysis gas generated in this process partially enters the pyrolysis gas discharge device outside the transmission discharge structure due to the closure of the slag outlet valve 211, and is discharged from the pyrolysis gas discharge device, while the other part enters and remains in the transmission discharge structure. The generated slag remains in the pyrolysis furnace 100 and continues to pyrolyze until the pyrolysis is completed. The pyrolysis furnace 100 rotates forward, and the slag is discharged from the pyrolysis solid waste outlet. It is introduced into the transmission discharge structure through the guide plate and the slag is transmitted from the slag inlet to the slag outlet. The pyrolysis gas retained in the transmission discharge structure is squeezed out from the slag inlet due to the slag filling the transmission cavity and enters the pyrolysis gas discharge device from the pyrolysis gas inlet. The slag accumulated in the closed transmission discharge structure can be kept at a high temperature. In some embodiments, the temperature in the transmission cavity can be kept above 200°C after the slag fills the transmission cavity, thereby fully preventing the pyrolysis oil from condensing in the slag. After the pyrolysis gas in the transmission discharge structure is squeezed to the external pyrolysis gas discharge device, the slag outlet valve 211 is opened to discharge the slag.

[0046] In some embodiments, after the slag fills the transmission chamber, the slag outlet valve 211 can be opened for slag discharge after a preset period of time, to ensure that the pyrolysis gas within the transmission discharge structure has been substantially squeezed into the external pyrolysis gas discharge device. The specific timing for opening the slag outlet valve 211 can be selected based on actual conditions and experience and is not limited here.

[0047] According to the discharging device of the embodiment of the present invention, before starting the pyrolysis furnace 100, the slag outlet valve 211 is first closed, so that the transmission discharging structure is in a closed state. The slag generated by the pyrolysis of organic solid waste in the pyrolysis furnace 100 is discharged from the pyrolysis solid waste outlet, and is introduced into the slag inlet through the guide plate inside the pyrolysis furnace 100, and is transmitted to the slag outlet through the transmission discharging structure. Part of the generated pyrolysis gas enters the pyrolysis gas discharge device outside the transmission discharging structure, while the other part enters the transmission discharging structure. After the slag fills the transmission cavity, the pyrolysis gas that has entered the transmission discharging structure will be squeezed out from the slag inlet and enter the pyrolysis gas discharge device. The slag temperature in the closed transmission discharging structure can be maintained at a high temperature, thereby preventing the pyrolysis oil from condensing in the slag and ensuring the temperature inside the pyrolysis gas discharge device. The discharging device of the embodiment of the present invention can simplify the equipment, reduce the pyrolysis oil in the slag, and improve operating efficiency.

[0048] In some embodiments of the present invention, reference Figure 1 The transmission discharging structure includes a discharging shell 210 and a transmission device 220.

[0049] The discharge shell 210 has a slag inlet and a slag outlet at both ends. The slag inlet is located near the pyrolysis solid waste outlet and is in sealed communication with the pyrolysis solid waste outlet. The slag outlet is provided with a slag outlet valve 211.

[0050] The transmission device 220 is arranged in the discharge shell 210. A slag collection chamber is formed between the transmission device 220 and the discharge shell 210. The transmission device 220 is used to transmit the slag falling from the slag falling inlet to the slag external discharge outlet, so that after the slag fills the slag collection chamber, the pyrolysis gas is squeezed into the pyrolysis gas discharge device and the temperature in the pyrolysis gas discharge device is maintained, and then the slag outlet valve 211 is opened to discharge the slag.

[0051] The transmission device 220 includes a driving part and a transmission part. The transmission part is arranged in the discharge shell 210, and the driving part is arranged outside the discharge shell 210 to avoid high temperature damage to the driving part.

[0052] refer to Figure 1 The transmission device 220 can be configured with a spiral discharge structure. First, it can fully utilize the internal space of the discharge housing 210, increasing the volume of the slag collection chamber, thereby collecting more slag and improving efficiency. Second, the spiral discharge structure fully rotates the slag during operation, creating a rotating airflow to better discharge the pyrolysis gas in the slag collection chamber to the pyrolysis gas discharge device. Third, the spiral discharge structure is more likely to fill the slag collection chamber with slag than the parallel track structure.

[0053] It should be noted that the transmission device 220 can also choose a high-temperature resistant parallel crawler structure or other high-temperature resistant transmission structure, as long as it can transmit the slag and fill the slag collection chamber with slag, it cannot be regarded as a limitation of the present invention.

[0054] In some embodiments of the present invention, reference Figure 1 The pitch of the spiral blades on the side of the spiral discharging structure close to the slag inlet is greater than the pitch of the spiral blades on the side away from the slag inlet. This allows the slag that first enters the spiral discharging structure to fill the slag collection chamber on the side away from the slag drop-inlet more quickly, thereby quickly squeezing out the pyrolysis gas in the spiral discharging structure, achieving a sealing effect and allowing the pyrolysis gas to enter the pyrolysis gas discharge device above.

[0055] It should be noted that the pitch between the spiral blades of the spiral discharging structure may also be the same throughout the entire section, which should not be regarded as a limitation to the present invention.

[0056] In some embodiments of the present invention, reference Figure 1 The pyrolysis gas discharge device includes an outer sleeve 310 and a gas-solid separation device.

[0057] The outer sleeve 310 is provided outside the transmission discharging structure, and the inlet of the outer sleeve 310 is in sealed communication with the slag inlet and the pyrolysis solid waste outlet;

[0058] The gas-solid separation device is arranged outside the transmission discharging structure. The gas-solid separation device has a gas inlet, a gas outlet and a solid outlet. The gas inlet is connected to the outlet of the outer sleeve 310 and the gas inlet is located in the middle of the side wall of the gas-solid separation device. The gas outlet is located at the top of the gas-solid separation device, and the solid outlet is located at the bottom of the gas-solid separation device. The gas-solid separation device is used to perform gas-solid separation on the pyrolysis gas.

[0059] The outer sleeve 310 is sleeved on the outside of the transmission discharge structure, forming an annular channel with the outside of the transmission discharge structure to discharge the pyrolysis gas. Part of the pyrolysis gas generated after the organic solid waste is pyrolyzed will enter the outer sleeve 310 outside the transmission discharge structure. Another part of the pyrolysis gas squeezed out after the slag fills the transmission cavity will also enter the outer sleeve 310, and then be transmitted to the gas-solid separation device for gas-solid separation. The dust and oil and water with high boiling points will liquefy and settle and be discharged through the solid outlet below. The pyrolysis gas can be simply filtered for dust and part of the pyrolysis oil. After the gas-solid separation, the pyrolysis gas goes upward and is discharged through the gas outlet for subsequent processing. This can reduce the dust content in the pyrolysis gas and facilitate the subsequent condensation and separation of the pyrolysis gas. Since the gas-solid separation device is arranged outside the transmission discharge structure, the slag temperature in the transmission discharge structure is maintained at a high temperature, which can ensure the temperature inside the gas-solid separation device, thereby ensuring the temperature of the pyrolysis gas.

[0060] In some embodiments of the present invention, reference Figure 1 The gas-solid separation device includes a gas separation bag 321 and a filtering device 322.

[0061] The gas separation bag 321 is provided outside the transmission discharging structure. The gas separation bag 321 has a separation inlet, a gas separation outlet and a solid separation outlet. The separation inlet is connected to the outlet of the outer sleeve 310 and is located in the middle of the side wall of the gas separation bag 321. The gas separation outlet is located at the top of the gas separation bag 321, and the solid separation outlet is located at the bottom of the gas separation bag 321.

[0062] The filtering device 322 is provided in the gas separation bag 321 and is used for performing gas-solid separation on the pyrolysis gas.

[0063] Gas separator 321 is used to hold pyrolysis gas. Within gas separator 321, filtration device 322 separates the gas from the pyrolysis gas. Settled dust and high-boiling-point liquefied oil and water are discharged through the solids separation outlet at the bottom, while the pyrolysis gas is discharged through the gas separation outlet at the top. This reduces the dust content in the pyrolysis gas and facilitates subsequent condensation and separation. Gas separator 321 is located outside the transmission and discharge structure. The slag temperature within the transmission and discharge structure remains high, maintaining the temperature within gas separator 321 and, consequently, the temperature of the pyrolysis gas.

[0064] In some embodiments of the present invention, reference Figure 1 The filtering device 322 adopts an inclined tube filtering structure. The inclined tube filtering structure has openings at both ends. The bottom of the inclined tube filtering structure is located above the separation inlet and is arranged on the opposite side of the separation inlet. The top of the inclined tube filtering structure is arranged near the gas separation outlet and the separation inlet. The pyrolysis gas is a gas with a low density. It will rise after entering the gas separation bag 321. The bottom of the inclined tube filtering structure is located above the separation inlet to ensure that the pyrolysis gas can smoothly enter the inclined tube filtering structure. The bottom of the inclined tube filtering structure is located above the separation inlet and is arranged on the opposite side of the separation inlet. The top of the inclined tube filtering structure is arranged near the gas separation outlet and the separation inlet. This can make the side wall of the gas separation bag 321 have a buffering effect on the pyrolysis gas entering from the separation inlet, and then go up through the slope of the inclined tube filtering structure in the opposite direction, and make the dust in the pyrolysis gas and the liquefied oil and water with a high boiling point settle in the slope and slide to the solid separation outlet below, which can effectively reduce the dust content in the pyrolysis gas.

[0065] It should be noted that the specific position of the inclined tube filtration structure can be adjusted according to actual conditions and is not specifically limited here.

[0066] In some embodiments of the present invention, reference Figure 1 The inclined tube filtration structure comprises multiple thin plate inclined tubes, which are spliced ​​sequentially through the tube wall. Each thin plate inclined tube is open at both ends. The bottom of each thin plate inclined tube is located above the separation inlet and on the opposite side of the separation inlet. The top of each thin plate inclined tube is located near the gas separation outlet and the separation inlet. The multiple thin plate inclined tubes divide the rising channel of the pyrolysis gas into multiple channels, thereby increasing resistance and preventing excessive gas flow rate from causing the pyrolysis gas to directly rush out of the gas separation outlet, resulting in poor gas-solid separation.

[0067] It should be noted that the thin plate inclined tubes are made of high-temperature resistant material. The size and number of thin plate inclined tubes can be selected based on actual conditions. The upper and lower ends of multiple thin plate inclined tubes can be flush or uneven, as long as the filtration effect is achieved. The inclined tube filtration structure can be a one-piece multi-tube structure or a combination of multiple separate thin plate inclined tubes, without limitation here.

[0068] In some embodiments of the present invention, filter device 322 utilizes a coil filter structure with openings at both ends. The bottom opening of the coil filter structure is positioned opposite the separation inlet, and the top opening of the coil filter structure is positioned near the gas separation outlet. The cross-sectional area of ​​the bottom of the coil filter structure is smaller than that of the top of the coil filter structure, and pyrolysis gas is dusted using the cyclone separation principle. It should be noted that the specific number and diameter of the coils in the coil filter structure can be selected based on actual conditions and are not limited herein.

[0069] In some embodiments of the present invention, the filter device 322 is a filter screen located above the separation inlet and connected to the inner wall of the gas separation bag 321. The filter screen can directly block larger dust and condensed pyrolysis oil, while the pyrolysis gas can directly pass through the filter screen and rise to the gas separation outlet, thereby reducing the dust content in the pyrolysis gas and blocking some condensed pyrolysis oil.

[0070] It should be noted that the filtering device 322 is not limited to the inclined tube filtering structure, the coil filtering structure and the filter screen, and other structures may also be used, which should not be regarded as a limitation of the present invention.

[0071] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A discharging device, characterized in that: include: a pyrolysis furnace having an organic solid waste inlet and a pyrolysis solid waste outlet, the pyrolysis furnace being used to pyrolyze the organic solid waste input through the organic solid waste inlet and generate slag and pyrolysis gas which are discharged through the pyrolysis solid waste outlet; a transmission discharging structure having a transmission cavity, and a slag inlet and a slag outlet respectively located at two ends of the transmission cavity, wherein the slag inlet is arranged near the pyrolysis solid waste outlet, and the slag inlet is in closed communication with the pyrolysis solid waste outlet, and the slag outlet is provided with a slag outlet valve; A pyrolysis gas discharge device is arranged outside the transmission discharging structure. The pyrolysis gas discharge device has a pyrolysis gas inlet and a pyrolysis gas outlet. The pyrolysis gas inlet is closed and connected with the slag inlet and the pyrolysis solid waste outlet. The transmission discharging structure is used to transmit the slag falling from the slag inlet to the slag outlet, so as to squeeze the pyrolysis gas into the pyrolysis gas discharge device after the slag fills the transmission cavity and maintain the temperature inside the pyrolysis gas discharge device, and then open the slag outlet valve to discharge the slag.

2. The discharging device according to claim 1, characterized in that: The transmission discharging structure includes: A discharge shell having a slag inlet and a slag outlet at both ends thereof, the slag inlet being arranged close to the pyrolysis solid waste outlet, the slag inlet being in sealed communication with the pyrolysis solid waste outlet, and the slag outlet being provided with the slag outlet valve; A transmission device is provided in the discharge shell, and a slag collecting chamber is formed between the transmission device and the discharge shell. The transmission device is used to transmit the slag falling from the slag falling inlet to the slag external discharge outlet, so as to squeeze the pyrolysis gas into the pyrolysis gas discharge device and maintain the temperature inside the pyrolysis gas discharge device after the slag fills the slag collecting chamber, and then open the slag outlet valve to discharge the slag.

3. The discharging device according to claim 2, characterized in that: The transmission device adopts a spiral discharging structure.

4. The discharging device according to claim 3, characterized in that: The pitch of the spiral blades of the spiral discharging structure on the side close to the slag inlet is greater than the pitch of the spiral blades on the side away from the slag inlet.

5. The discharging device according to claim 1, characterized in that: The pyrolysis gas discharge device comprises: An outer sleeve is provided outside the transmission discharging structure, and an inlet of the outer sleeve is in sealed communication with the slag inlet and the pyrolysis solid waste outlet; A gas-solid separation device is arranged outside the transmission discharging structure. The gas-solid separation device has a gas inlet, a gas outlet and a solid outlet. The gas inlet is connected to the outlet of the outer sleeve and the gas inlet is located in the middle of the side wall of the gas-solid separation device. The gas outlet is located at the top of the gas-solid separation device, and the solid outlet is located at the bottom of the gas-solid separation device. The gas-solid separation device is used to perform gas-solid separation on the pyrolysis gas.

6. The discharging device according to claim 5, characterized in that: The gas-solid separation device comprises: An air separation bag is provided outside the transmission discharging structure, and has a separation inlet, a gas separation outlet, and a solid separation outlet. The separation inlet is connected to the outlet of the outer sleeve and is located in the middle of the side wall of the air separation bag. The gas separation outlet is located at the top of the air separation bag, and the solid separation outlet is located at the bottom of the air separation bag. A filtering device is provided in the gas separation bag, and is used for performing gas-solid separation on the pyrolysis gas.

7. The discharging device according to claim 6, characterized in that: The filtering device adopts an oblique tube filtering structure, which is open at both ends. The bottom of the oblique tube filtering structure is located above the separation inlet and is arranged close to the opposite side of the separation inlet. The top of the oblique tube filtering structure is arranged close to the gas separation outlet and the separation inlet.

8. The discharging device according to claim 7, characterized in that: The inclined tube filtration structure includes a plurality of thin plate inclined tubes, which are spliced ​​in sequence through the tube wall. Each of the thin plate inclined tubes is open at both ends. The bottom of each thin plate inclined tube is located above the separation inlet and is arranged close to the opposite side of the separation inlet. The top of each thin plate inclined tube is arranged close to the gas separation outlet and the separation inlet.

9. The discharging device according to claim 6, characterized in that: The filter device adopts a coil filter structure, both ends of the coil filter structure are open, the bottom opening of the coil filter structure is arranged opposite to the separation inlet, and the top opening of the coil filter structure is arranged close to the gas separation outlet.

10. The discharging device according to claim 6, characterized in that: The filtering device adopts a filter screen, which is located above the separation inlet and connected to the inner wall of the gas separation bag.

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