Trailer type movable straw carbonization treatment system

Abstract

A trailer type movable straw carbonization treatment system comprises a trailer, a carbonization reaction unit is installed on the trailer and comprises a furnace body, a carbonization chamber is formed in the upper portion of the inner space of the furnace body in a spaced mode, and the lower portion of the inner space of the furnace body is vacant to serve as a combustion chamber for heating the carbonization chamber. The left and right sides and the top surface of the carbonization chamber are in clearance fit with the inner wall of the furnace body to form a flue; a combustible gas return pipe located above the air supply pipe is further arranged in the combustion chamber, and the front section of the combustible gas return pipe outwards penetrates out of the furnace body to form a combustible gas inlet. A first smoke outlet communicated with the combustion chamber and a first pyrolysis gas discharge outlet communicated with the carbonization chamber are formed in the front end of the furnace body, and a second smoke outlet downwards communicated to the top end of the flue and a second pyrolysis gas discharge outlet downwards communicated to the top end of the carbonization chamber are formed in the top of the furnace body. Different gas path structures are applied to the tail gas of the carbonization reaction, so that gas supply is realized, and heat energy in the tail gas is fully retained.

Description

Technical Field

[0001] The invention relates to the technical field of biomass carbonization / pyrolysis, in particular to a trailer-type movable straw carbonization processing system. Background Art

[0002] Straw carbonization is the process of converting straw into biochar through thermochemical conversion. Specifically, it is the process of converting straw into biochar through pyrolysis (decomposition under high temperature and oxygen-deficient conditions). It can simultaneously achieve functions such as carbon sequestration and pollutant separation, and has multiple benefits such as resource utilization, carbon fixation and emission reduction, and soil improvement.

[0003] In the existing technology, the straw carbonization process is mostly designed as follows: raw material pretreatment → carbonization reaction → product collection and treatment → tail gas purification and energy recovery → biochar application. Among them, the carbonization reaction link is to promote the release of volatiles in the straw through high temperature, and the desired temperature is usually above 200°C. Before reaching the desired temperature, there must be a gradual temperature increase process. Studies have shown that controlling the temperature increase rate at 10-20°C / min is more conducive to the formation of biochar pore structure. During the heating process, due to the low reaction temperature, the tail gas composition of the carbonization reaction is relatively complex. In addition to combustible gases such as CO, H2, and CH4, it also contains wood acetic acid, tar, and smoke. After reaching the desired temperature, due to sufficient pyrolysis, the tail gas composition of the carbonization reaction basically no longer contains wood acetic acid and tar. In the product collection and processing stage, condensation towers are often used to separate tar and wood vinegar. Tar can be used as fuel, and wood vinegar can be used for agricultural antibacterial or organic fertilizer. In the exhaust gas purification and energy recovery stage, the exhaust gas of the carbonization reaction is often subjected to dust removal treatment, and then the combustible gas is returned to the carbonization system as fuel for the heating system.

[0004] In known straw carbonization technologies, the two stages of heating and reaching the desired temperature do not differentiate between the treatment methods for exhaust gas, and the same gas path is used for all exhaust gas treatment. For example, the Chinese invention patent publication CN117025238B discloses a mobile field-based small-scale continuous self-heating straw carbonization device. Exhaust gas containing smoke and combustible gas enters the induced draft fan assembly valve through the smoke outlet. The induced draft fan on the induced draft fan assembly provides power to transport the smoke to the smoke conveying system and then into the carbon dioxide absorption system, where carbon dioxide, tar, and smoke are absorbed. The combustible gas and water vapor are discharged into the dust-free biogas conveying pipe and then into the biogas drying system, where water vapor is absorbed. Finally, the dried combustible gas is sent to the gas collection system and connected to the gas inlet through the gas collection system valve, providing a heat source for the gas heating assembly, thereby achieving self-heating during the straw pyrolysis and carbonization process.

[0005] It is worth noting that in the above-mentioned known straw carbonization technology, after the carbonization reaction reaches the desired temperature, the exhaust gas components of the carbonization reaction basically no longer contain lignin acid and tar, and there is no need to recover lignin acid and tar. The original gas path will become too long, resulting in increased loss of heat in the exhaust gas, which is not conducive to heat energy recovery. Summary of the Invention

[0006] The present invention aims to optimize the gas path structure in straw carbonization technology, and implement different gas paths for the two stages of heating process and reaching the desired temperature in the carbonization reaction link, thereby improving the efficiency of exhaust gas purification and energy recovery links and reducing heat energy loss in the exhaust gas.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions.

[0008] A trailer-type movable straw carbonization processing system includes a trailer, on which a carbonization reaction unit is installed. The carbonization reaction unit includes a furnace body, the outer shell of the furnace body has a heat-insulating interlayer, the interior space of the furnace body is separated into a carbonization chamber at the top, and the bottom is vacant as a combustion chamber for heating the carbonization chamber. The carbonization chamber is fitted with the inner wall of the furnace body on both sides and the top surface, thereby forming a flue connected to the combustion chamber;

[0009] The rear end of the carbonization chamber is provided with an inlet and outlet, and the rear end of the furnace body is provided with a furnace door for opening and closing the inlet and outlet.

[0010] An air supply pipe is laid horizontally in the combustion chamber. The air supply pipe is provided with multiple air outlets arranged axially. The front end of the air supply pipe passes through the furnace body to form an air inlet. A fan is provided on the trailer to supply air to the air inlet.

[0011] The combustion chamber is also provided with a combustible gas return pipe located above the air supply pipe. The combustible gas return pipe is provided with a plurality of combustible gas outlets arranged axially. The front section of the combustible gas return pipe passes through the furnace body to form a combustible gas inlet.

[0012] The front end of the furnace body is provided with a first smoke exhaust port connected to the combustion chamber and a first pyrolysis gas exhaust port connected to the carbonization chamber. The top of the furnace body is provided with a second smoke exhaust port connected downward to the top of the flue and a second pyrolysis gas exhaust port connected downward to the top of the carbonization chamber.

[0013] A fire door for opening and closing the combustion chamber is provided on the left side of the furnace body;

[0014] The trailer is also provided with a condensation tower and a water tank. A first gas path is constructed for the carbonization chamber through pipelines, which passes through the first pyrolysis gas discharge port, the condensation tower, and the water tank in sequence. A second gas path is constructed through pipelines, which passes through the second pyrolysis gas discharge port, the condensation tower, and the water tank in sequence. A third gas path is constructed through pipelines, which passes through the second pyrolysis gas discharge port and the combustible gas inlet in sequence. A fourth gas path is constructed for the combustion chamber through pipelines, which passes through the first smoke exhaust port, the condensation tower, and the water tank in sequence. A fifth gas path is constructed through pipelines, which passes through the second smoke exhaust port, the condensation tower, and the water tank in sequence. Gas valves for opening and closing the gas paths are respectively provided in the first gas path, the second gas path, and the third gas path.

[0015] In the fifth gas path, a heat exchange unit is connected in series between the second smoke exhaust port and the condensation tower, and the heat exchange unit has a diversion port connected to the air inlet of the fan.

[0016] As an improvement of one aspect of the present invention, inspection doors for opening and closing the flue are respectively provided on the left and right sides of the furnace body.

[0017] As an improvement of one aspect of the present invention, a ceramic heat storage plate is provided on the inner wall of the carbonization chamber.

[0018] As an improvement of one aspect of the present invention, a diversion port is provided at the lower end of the condensation tower, and a recovery tank for collecting liquid discharged from the diversion port is provided on the trailer.

[0019] As an improvement of one aspect of the present invention, a material cart is provided in the carbonization chamber that can enter and exit from the material inlet and outlet.

[0020] Furthermore, the inner bottom of the carbonization chamber is paved with a slide rail perpendicular to the inlet and outlet, and the bottom of the material cart is slidably matched with the carbonization chamber through the slide rail; the tail of the material cart is also provided with a bracket on the bottom, and the upper end of the bracket is hinged to the bottom of the material cart; when the material cart moves to the outside of the carbonization chamber, the bracket naturally droops and expands to support the ground; when the material cart is retracted into the carbonization chamber, the bracket folds and retracts the bottom of the material cart.

[0021] Furthermore, the furnace body is provided with a water supply pipe located above the furnace door. The water supply pipe has multiple spray heads extending downward. The trailer is provided with a water pump that supplies water from the water tank to the water supply pipe. A water valve is connected in series between the water supply pipe and the water pump.

[0022] As another improvement of the present invention, the trailer is provided with a weighing device for measuring its own weight.

[0023] As another improvement of the present invention, the trailer is further provided with a positioning device connected to a satellite navigation system.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] During the temperature-raising process and the stage of reaching the desired temperature in the carbonization reaction link, different gas path structures are implemented for the tail gas of the carbonization reaction unit. During the temperature-raising process in the carbonization reaction link, only the first and second gas paths are activated, and the tail gas emitted from the carbonization chamber is recovered through the condensation tower to recover wood acetic acid and tar. After the carbonization reaction link reaches the desired temperature, only the third gas path is activated, and the tail gas emitted from the carbonization chamber is introduced into the combustion chamber through the combustible gas return pipe, which not only realizes the gas supply but also fully retains the heat energy in the tail gas. At the same time, with the assistance of the heat recovery unit in the fifth gas path, the tail gas heat energy recovery rate of the combustion chamber and the carbonization chamber is increased by 20%.

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the carbonization reaction unit in the present invention.

[0029] Figure 3 This is a schematic cross-sectional view of the carbonization reaction unit in the present invention. Figure 1 .

[0030] Figure 4 This is a schematic cross-sectional view of the carbonization reaction unit in the present invention. Figure 2 .

[0031] Figure 5 It is a schematic diagram of the working state of the carbonization reaction unit in the present invention.

[0032] Figure 6 It is a schematic diagram of the working principles of the first gas path, the second gas path, the third gas path, the fourth gas path and the fifth gas path in the present invention.

[0033] Figure 7 Schematic diagram of the assembly of the first water supply pipe and the water supply pipe in the present invention. DETAILED DESCRIPTION

[0034] See also Figures 1 to 7 As shown, in one embodiment, a trailer-type movable straw carbonization processing system of the present invention includes a trailer 1, on which a carbonization reaction unit 2 is installed. The carbonization reaction unit 2 includes a furnace body 21, the outer shell of the furnace body 21 has a heat-insulating interlayer 211, the internal space of the furnace body 21 is separated into a carbonization chamber 22 at the top, and a combustion chamber 23 for heating the carbonization chamber 22 is left vacant at the bottom. The carbonization chamber 22 is gap-matched with the inner wall of the furnace body 21 on both sides and the top surface, thereby forming a flue 24 connected to the combustion chamber 23;

[0035] The rear end of the carbonization chamber 22 is provided with an inlet and outlet port 221, and the rear end of the furnace body 21 is provided with a furnace door 25 for opening and closing the inlet and outlet port 221;

[0036] An air supply pipe 231 is horizontally laid in the combustion chamber 23. The air supply pipe 231 has multiple air outlets (not shown) arranged axially. The front end of the air supply pipe 231 passes through the furnace body 21 to form an air inlet 233. The trailer 1 is provided with a fan 3 for supplying air to the air inlet 233.

[0037] The combustion chamber 23 is further provided with a combustible gas return pipe 234 located above the air supply pipe 231. The combustible gas return pipe 234 is provided with a plurality of combustible gas outlets (not shown) arranged axially. The front section of the combustible gas return pipe 234 extends outward from the furnace body 21 to form a combustible gas inlet 236.

[0038] The front end of the furnace body 21 is provided with a first smoke exhaust port 230 communicating with the combustion chamber 23 and a first pyrolysis gas exhaust port 220a communicating with the carbonization chamber 22. The top of the furnace body 21 is provided with a second smoke exhaust port 240 communicating downwardly to the top of the flue 24 and a second pyrolysis gas exhaust port 220b communicating downwardly to the top of the carbonization chamber 22.

[0039] A fire door 27 for opening and closing the combustion chamber 23 is provided on the left side of the furnace body 21;

[0040] The trailer 1 is also provided with a condensation tower 4 and a water tank 5. A first gas path is constructed for the carbonization chamber 22 through pipelines, which passes through the first pyrolysis gas exhaust port 220a, the condensation tower 4, and the water tank 5 in sequence. A second gas path is constructed through the second pyrolysis gas exhaust port 220b, the condensation tower 4, and the water tank 5 in sequence. A third gas path is constructed through the second pyrolysis gas exhaust port 220b and the combustible gas inlet 236 in sequence. A fourth gas path is constructed for the combustion chamber 23 through pipelines, which passes through the first smoke exhaust port 230, the condensation tower 4, and the water tank 5 in sequence. A fifth gas path is constructed through pipelines, which passes through the second smoke exhaust port 240, the condensation tower 4, and the water tank 5 in sequence. A gas valve for opening and closing the gas path is respectively provided in the first gas path, the second gas path, and the third gas path.

[0041] In the fifth gas path, a heat exchange unit 6 is connected in series between the second smoke exhaust port 240 and the condensation tower 4 . The heat exchange unit 6 has a diversion port 61 connected to the air inlet 233 of the fan 3 .

[0042] In the above embodiment, the present invention adopts the following working mode:

[0043] (1) Open the furnace door 25 and load the straw to be carbonized into the carbonization chamber 22 through the inlet and outlet 221. After loading, close the furnace door 25 to seal the inlet and outlet 221;

[0044] (2) Open the fire door 27, add the initial fuel into the combustion chamber 23, ignite the initial fuel, close the fire door 27, and the smoke generated in the combustion chamber 23 enters the fourth gas path and the fifth gas path, is sprayed and filtered in the condensation tower 4, and then passes through the water tank 5 for water bath filtration before being discharged into the atmosphere;

[0045] (3) The carbonization chamber 22 is heated by the combustion chamber 23, and the temperature inside the carbonization chamber 22 gradually increases, entering the temperature rising process in the carbonization reaction link;

[0046] (4) During the temperature rise process in the carbonization reaction link, the third gas path is closed by the gas valve and the first gas path and the second gas path are opened. The straw to be carbonized in the carbonization chamber 22 begins to produce pyrolysis gas rich in wood acetic acid and tar. The pyrolysis gas enters the first gas path and the second gas path, and is spray-filtered through the condensation tower 4. The wood acetic acid and tar in the pyrolysis gas are absorbed in the condensed water and recovered. The remaining gas is then filtered in a water bath through the water tank 5 and discharged into the atmosphere.

[0047] (5) After the temperature inside the carbonization chamber 22 exceeds 200°C, the carbonization reaction reaches the desired temperature, and the pyrolysis gas basically no longer contains wood acetic acid and tar. The first gas path and the second gas path are closed by the gas valve and the third gas path is opened. The high-temperature pyrolysis gas directly flows back to the combustion chamber 23 through the third gas path, which not only realizes the fuel gas supply, but also fully retains the heat energy in the tail gas. At the same time, the flue gas generated by the combustion chamber 23 also contains more waste heat. The flue gas is diverted in the fifth gas path through the heat energy exchange unit 6, and the flue gas is discharged through the third gas path. After being spray-filtered by the condensation tower 4, the flue gas is then filtered in a water bath in the water tank 5 before being discharged into the atmosphere. The other flue gas is connected to the air inlet 233 of the fan 3 through the diversion port 61 of the heat exchange unit 6, thereby mixing with the air supplied by the fan 3 to the air inlet 233. This makes the air supplied by the fan 3 to the air inlet 233 have a higher initial temperature, thus realizing heat energy recovery. With the assistance of the heat energy recovery unit in the fifth gas path, the exhaust heat energy recovery rate of the combustion chamber 23 and the carbonization chamber 22 can be increased by 20%.

[0048] (6) After the straw in the carbonization chamber 22 is completely carbonized and cooled, the furnace door 25 can be opened to recover the biochar.

[0049] In the above embodiment, the trailer-type movable straw carbonization treatment system of the present invention is integrated as a whole on the trailer 1, and can realize mobile operation under the drive of the tractor head, which can significantly reduce the collection and transportation cost of straw.

[0050] In the above embodiment, the initial fuel loaded into the combustion chamber 23 may be a proper amount of wood, or other fuels, such as tar separated from the above condensed water.

[0051] In the above embodiment, the method of detecting the internal temperature of the carbonization chamber 22 can be based on empirical evaluation, or a temperature sensor can be implanted in the carbonization chamber 22. The selection of these detection methods is not the improvement direction of the present invention, and can be directly implemented according to known technical means, so they will not be described in detail.

[0052] In the above embodiment, the spray water of the condensation tower 4 is provided by the water tank 5, and the specific water connection belongs to the conventional setting, so it will not be described in detail.

[0053] In an improved embodiment, to facilitate inspection and cleaning of the flue 24, access doors 28 are provided on the left and right sides of the furnace body 21 for opening and closing the flue 24. During inspection and cleaning, opening the access doors 28 exposes the flue 24, facilitating cleaning with a high-pressure water gun. A corresponding drain outlet is also provided at the bottom of the combustion chamber 23 to prevent water accumulation.

[0054] In another improved embodiment, to enhance the thermal efficiency of the carbonization chamber 22, a ceramic heat storage plate 241 is provided on the inner wall of the carbonization chamber 22. The ceramic heat storage plate 241 is a well-known porous ceramic heat storage body. During the heating process, the ceramic heat storage plate 241 not only accumulates a large amount of heat but also generates a large amount of far infrared rays, which increases the thermal efficiency of the carbonization chamber 22 by approximately 20-30%.

[0055] In another improved embodiment, a diversion port 41 is provided at the lower end of the condensation tower 4, and a recovery tank 42 is provided on the trailer 1 to collect the liquid discharged from the diversion port 41. The condensed water that has absorbed the wood vinegar and tar is discharged into the recovery tank 42 through the diversion port 41. After standing in the recovery tank 42, the water is separated into layers to obtain the wood vinegar in the upper layer and the tar in the lower layer.

[0056] In another improved embodiment, in order to facilitate the feeding of straw and the recovery of biochar, a material cart 7 that can enter and exit from the inlet and outlet 221 is provided in the carbonization chamber 22 .

[0057] Specifically, the inner bottom of the carbonization chamber 22 is paved with a slide rail 222 perpendicular to the inlet and outlet 221, and the bottom of the trolley 7 is in sliding cooperation with the carbonization chamber 22 through the slide rail 222; the tail of the trolley 7 is also provided with a bracket 71 on the bottom surface, and the upper end of the bracket 71 is hinged to the bottom of the trolley 7; when the trolley 7 moves to the outside of the carbonization chamber 22, the bracket 71 naturally droops and unfolds to support the ground; when the trolley 7 is retracted into the carbonization chamber 22, the bracket 71 folds and retracts the bottom of the trolley 7. When the trolley 7 is configured, open the fire door 27, pull the trolley 7 out of the carbonization chamber 22, load the trolley 7 with straw to be carbonized, push the trolley 7 into the carbonization chamber 22 after loading, and then close the furnace door 25. Similarly, after carbonization is completed, open the fire door 27, pull the trolley 7 out of the carbonization chamber 22, and the biochar can be recovered.

[0058] In order to shorten the cooling time after carbonization is completed, in an improved embodiment of the present invention, a water supply pipe 215 is provided on the furnace body 21 above the furnace door 25, and the water supply pipe 215 has a plurality of spray heads 216 extending downward. A water pump 8 is provided on the trailer 1 to supply water from the water tank 5 to the water supply pipe 215, and a water valve 217 is connected in series between the water supply pipe 215 and the water pump 8. During the process of the material cart 7 sliding out of the inlet and outlet 221, the water pump 8 is started, the water valve 217 is opened, and the biochar in the material cart 7 is sprayed and cooled through the spray head 216. This spray cooling method can not only speed up the cooling rate of the biochar, but also avoid the inner wall of the carbonization chamber 22 from being sprayed, thereby preventing the inner wall of the carbonization chamber from being deformed and damaged due to a sudden drop in temperature. As for the water sprayed into the material cart 7, most of it is vaporized and evaporated at high temperature, which will not cause a large amount of water to remain in the material cart 7.

[0059] In another improved embodiment, trailer 1 is equipped with a weighing device 11 for measuring its own weight. Optionally, weighing device 11 includes a pressure sensor (not shown) mounted on an axle of trailer 1. The pressure sensor generates a signal change based on the pressure exerted by the trailer body on the axle, and then uses a corresponding circuit to determine the trailer 1's own weight. This is significant in that the change in trailer 1's weight can be used to calculate the biomass carbon conversion rate.

[0060] In another improved embodiment, the trailer 1 is further provided with a positioning device 12 connected to a satellite navigation system. The positioning device 12 is used to record the work location and can be used in conjunction with an APP for Internet of Things management.

[0061] Specifically, the weighing device 11 and the positioning device 12 can be directly implemented according to technical solutions known in the prior art. Therefore, the present invention will not elaborate on their specific implementation methods.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A trailer-type movable straw carbonization treatment system, comprising a trailer with a carbonization reaction unit installed on the trailer, characterized in that: The carbonization reaction unit includes a furnace body, the outer shell of the furnace body has a heat-insulating interlayer, the internal space of the furnace body is separated into a carbonization chamber at the top, and the bottom is vacant as a combustion chamber for heating the carbonization chamber. The carbonization chamber is fitted with the inner wall of the furnace body on both sides and the top surface, thereby forming a flue connected to the combustion chamber; The rear end of the carbonization chamber is provided with an inlet and outlet, and the rear end of the furnace body is provided with a furnace door for opening and closing the inlet and outlet. An air supply pipe is laid horizontally in the combustion chamber. The air supply pipe is provided with multiple air outlets arranged axially. The front end of the air supply pipe passes through the furnace body to form an air inlet. A fan is provided on the trailer to supply air to the air inlet. The combustion chamber is also provided with a combustible gas return pipe located above the air supply pipe. The combustible gas return pipe is provided with a plurality of combustible gas outlets arranged axially. The front section of the combustible gas return pipe passes through the furnace body to form a combustible gas inlet. The front end of the furnace body is provided with a first smoke exhaust port connected to the combustion chamber and a first pyrolysis gas exhaust port connected to the carbonization chamber. The top of the furnace body is provided with a second smoke exhaust port connected downward to the top of the flue and a second pyrolysis gas exhaust port connected downward to the top of the carbonization chamber. A fire door for opening and closing the combustion chamber is provided on the left side of the furnace body; The trailer is also provided with a condensation tower and a water tank. A first gas path is constructed for the carbonization chamber through pipelines, which passes through the first pyrolysis gas discharge port, the condensation tower, and the water tank in sequence. A second gas path is constructed through pipelines, which passes through the second pyrolysis gas discharge port, the condensation tower, and the water tank in sequence. A third gas path is constructed through pipelines, which passes through the second pyrolysis gas discharge port and the combustible gas inlet in sequence. A fourth gas path is constructed for the combustion chamber through pipelines, which passes through the first smoke exhaust port, the condensation tower, and the water tank in sequence. A fifth gas path is constructed through pipelines, which passes through the second smoke exhaust port, the condensation tower, and the water tank in sequence. Gas valves for opening and closing the gas paths are respectively provided in the first gas path, the second gas path, and the third gas path. In the fifth gas path, a heat exchange unit is connected in series between the second smoke exhaust port and the condensation tower, and the heat exchange unit has a diversion port connected to the air inlet of the fan.

2. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: Inspection doors for opening and closing the flue are provided on the left and right sides of the furnace body.

3. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: A ceramic heat storage plate is provided on the inner wall of the carbonization chamber.

4. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: A diversion port is provided at the lower end of the condensation tower, and a recovery tank is provided on the trailer to collect the liquid discharged from the diversion port.

5. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: The carbonization chamber is provided with a material cart which can enter and exit from the inlet and outlet.

6. The trailer-type movable straw carbonization treatment system according to claim 5, characterized in that: The inner bottom of the carbonization chamber is paved with a slide rail perpendicular to the inlet and outlet, and the bottom of the material cart slides with the carbonization chamber through the slide rail; the tail of the material cart is also provided with a bracket on the bottom, and the upper end of the bracket is hinged to the bottom of the material cart; when the material cart moves to the outside of the carbonization chamber, the bracket naturally droops and expands to support the ground; when the material cart is retracted into the carbonization chamber, the bracket folds and retracts the bottom of the material cart.

7. The trailer-type movable straw carbonization treatment system according to claim 5, characterized in that: The furnace body is also provided with a water supply pipe located above the furnace door. The water supply pipe has multiple spray heads extending downward. The trailer is provided with a water pump that supplies water from the water tank to the water supply pipe. A water valve is connected in series between the water supply pipe and the water pump.

8. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: The trailer is equipped with a weighing device to measure its own weight.

9. The trailer-type movable straw carbonization treatment system according to claim 1, characterized in that: The trailer is also equipped with a positioning device connected to a satellite navigation system.

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