CN215855922U - Tobacco stem and tobacco stem dry distillation machine - Google Patents

Abstract

The utility model discloses a tobacco stem and tobacco stem dry distillation machine, which comprises a machine barrel and an inner barrel, wherein the inner barrel is coaxially arranged in the machine barrel, an air flow channel through which high-temperature air flows is formed between the inner barrel and the machine barrel, a material feeding channel for pushing biomass fuel is formed inside the inner barrel, a spiral material pushing shaft with a spiral plate for pushing material is rotatably arranged inside the inner barrel, two ends of the inner barrel are fixedly arranged on a high-temperature air supply box and a medium-temperature air exhaust box in a penetrating manner, a feeding box communicated with the inner barrel is arranged at one end of the inner barrel, which is close to the medium-temperature air exhaust box, two ends of the machine barrel are rotatably arranged on the high-temperature air supply box and the medium-temperature air exhaust box in a sealing manner, the high-temperature air supply box and the medium-temperature air exhaust box are communicated with the air flow channel in the machine barrel, an air-carbon separator is fixedly arranged at one end of the inner barrel, which is close to the high-temperature air supply box, sealing plates are arranged at two ends in the machine barrel, a plurality of tubes are fixedly connected between the two sealing plates.

Description

Tobacco stem and tobacco stem dry distillation machine

Technical Field

The utility model relates to the field of biomass gasification, in particular to a tobacco stem and tobacco stem dry distillation machine.

Background

Tobacco leaves in tobacco are very obvious in national economic status, 1858 million acres of tobacco are planted in the last year of China, 1.5 per mu of tobacco leaves are produced on average, 2787 million acres of tobacco leaves are produced in the whole country, the weight of the tobacco leaves in the whole family of tobacco is only 50/%, so 929 million tons of tobacco stems, one kilogram of tobacco stems, 1858 million acres of tobacco stems and 2787 million tons of tobacco stem and tobacco root wastes are produced in China every year, and tobacco industry redrying enterprises in various places continuously adopt a density pressing or direct gasification mode to convert the tobacco stems into heat energy. However, the tobacco stems and the tobacco roots are abandoned in the field for years, the in-situ burning is forbidden to apply the straw returning in the present country, the tobacco stem root system bacteria storage is required to implement the stubble changing, and the energy is seriously wasted.

The calorific value of the waste tobacco stalks and tobacco roots is about 2500 kilocalories, which is equivalent to one half of raw coal with the calorific value of 5000 kilocalories, and the biomass gasification technology is adopted to convert carbon accumulated by biomass under the optical action into combustible gas under the condition of oxygen limitation. In the 21 st century, biomass gasification technology has been widely applied to biomass centralized gas supply, biomass gasification flue-cured tobacco and biomass gasification power generation. The biomass gasification technology can fully utilize renewable biomass energy, can replace limited petrochemical energy stored in the earth, and can radically treat the pollution of the burning biomass to the atmosphere.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tobacco stem and tobacco rod dry distillation machine to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a tobacco stem and tobacco stem dry distillation machine, includes barrel and inner tube, the inner tube coaxial arrangement with within the barrel, the inner tube with form the air runner that high temperature air flowed through between the barrel, the inside of inner tube forms the propulsive material passageway of walking of biomass fuel, and the inside rotation of inner tube is installed and is used for pushing away the spiral pusher shaft that has the spiral board that has of material, and the both ends of inner tube are fixed to be worn to establish on high temperature supply box and the medium temperature exhaust box, lie in on the inner tube and be close to medium temperature exhaust box one end is provided with the feed box that is linked together with the inner tube, the sealed rotation in both ends of barrel is installed on high temperature supply box and the medium temperature exhaust box, and high temperature supply box and medium temperature exhaust box all are linked together with the air runner in the barrel, the inner tube is close to the one end fixed mounting of high temperature supply box has the gas-carbon separator.

As a further aspect of the present application: the air flow passage is characterized in that sealing plates are arranged at two ends of the machine barrel, a plurality of tubes are fixedly connected between the two sealing plates, the end pipe orifices of the tubes are arranged on the sealing plates, and the inner cavities of the tubes form the air flow passage.

As a further aspect of the present application: and a gas burner is arranged on the high-temperature air supply box.

As a further aspect of the present application: and a carbon discharging machine is arranged at the bottom of the high-temperature air supply box.

As a further aspect of the present application: still include the gas detection pipe, the gas detection pipe fixed mounting be in the top of gas discharge pipe, install the waste gas combustor on the gas detection pipe.

As a further aspect of the present application: the automatic feeding device is characterized by further comprising a driving device for driving the machine barrel to rotate, wherein the driving device comprises a chain endless belt and a motor, the chain endless belt is fixedly assembled on the outer wall of the machine barrel, and the chain endless belt is in transmission connection with the motor.

As a further aspect of the present application: the device also comprises an externally arranged riding wheel for supporting the machine barrel to rotate.

As a further aspect of the present application: a cyclone dust collector is fixedly installed in the gas-carbon separator, and a fuel gas discharge pipe at the top of the cyclone dust collector extends to the outside of the gas-carbon separator.

Compared with the prior art, the utility model has the beneficial effects that:

1. the dry distillation machine has a simple structure, is convenient to use, the machine barrel of the dry distillation machine can be rotatably arranged relative to the inner barrel, and the flow direction of fuel in the machine barrel is opposite to that of high-humidity dry distillation air, so that the maximum heat radiation area is ensured, and the dry distillation quality is improved;

2. an air flow channel in the machine barrel is formed by a plurality of tubes and is matched with the rotation of the machine barrel, so that the tubes rotate around the inner barrel, and the materials turn in the inner barrel and move forward, so that the materials are heated in all directions, and the dry distillation effect is improved.

Drawings

FIG. 1 is a schematic structural diagram of a comprehensive utilization device for dry distillation of tobacco stems and stalks of tobacco stalks;

FIG. 2 is a schematic structural diagram of a dry distillation machine in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

FIG. 3 is a partial enlarged view of the front end of the dry distillation machine in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

FIG. 4 is a partial enlarged view of the rear end of the dry distillation machine in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

FIG. 5 is a schematic structural diagram of a tar cracker in the comprehensive utilization device for dry distillation of tobacco stems and tobacco stems;

FIG. 6 is a sectional view of a spray tower in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

FIG. 7 is a schematic structural diagram of a spray tower in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

FIG. 8 is a schematic structural diagram of a cooling tower in the comprehensive utilization device for dry distillation of tobacco stems and stalks;

in the figure: a raw material conveyor 100, a lifter 101, a raw material storage bin 102 and a raw material conversion drum 103;

the device comprises a dry distillation machine 200, a machine barrel 201, a riding wheel 202, a medium temperature exhaust box 203, a high temperature air supply box 204, a gas-carbon separator 205, a carbon discharging machine 206, a chain ring belt 207, a motor 208, a fan 209, a spiral pushing shaft 210, a feeding box 211, a gas burner 212, a carbon discharging auger 213, an exhaust gas burner 214, a connecting pipe 215, a gas detecting pipe 216, a gas discharging pipe 217, a cyclone dust collector 218, a tube array 219 and an inner tube 220;

a hot blast stove 300, an air inlet branch pipe 301 and an air outlet branch pipe 302;

the device comprises a tar cracker 400, a water seal tank 401, a slag extractor 402, a fixed carbon conversion box 403, a fixed carbon conveyor 404, a flame partition wall 405, a front cavity 406, a combustion improver pipe 407, a diesel oil burner 408, a gas inlet pipe 409, a carbon inlet 410, a gas outlet pipe 411, a gas partition wall 412, a rear cavity 413, a middle cavity 414 and a slag discharge pipe 415;

a low-temperature heat exchanger 500, a high-temperature heat exchanger 501 and a blower 502;

the system comprises a spray tower 600, a first submersible pump 6001, a lower section barrel 6002, an air inlet pipe 6003, a manhole 6004, a first vertical pipe 6005, a first valve 6006, a water distribution pipe 6007, an upper section barrel 6008, a first branch pipe 6009, an atomizing nozzle 6010, a support 6011, a water-gas separation plate 6012 and an air outlet 6013;

the system comprises a sedimentation tank 601, a water tank 602, a cooling tower 603, a coil pipe 6031, a motor 6032, a second branch pipe 6033, a second valve 6034, a second vertical pipe 6035, a second submersible pump 6036, a spray head 6037, a fan 6038 and a condensation pipe 6039; a gas-water separator 604;

the system comprises a water seal 700, an induced draft fan 701, a gas distribution tank 800 and a boiler 801;

medium temperature tuber pipe 900, high temperature tuber pipe 901, low temperature tuber pipe 902, gas pipe 903, air duct 904.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, in the embodiment, a comprehensive utilization device for dry distillation of tobacco stems and stalks comprises a feeding device, a dry distillation machine 200 for dry distillation of tobacco stems and stalks, a tar cracker 400 for heating and filtering fuel gas, a hot blast stove 300 for providing dry distillation high-temperature air for the dry distillation machine 200, a spray tower 600 for spraying and cooling the fuel gas, a gas distribution tank 800 for distributing gas for distributing the gas, a low-temperature heat exchanger 500 and a high-temperature heat exchanger 501 for recovering waste heat of the high-temperature fuel gas and having the same structure, and a plurality of gas path connecting pipes 215 with valves.

In this embodiment, the feeding device includes a raw material conveyor 100, a lifting machine 101, a raw material storage bin 102, and a raw material conversion drum 103, which are connected in sequence.

Referring to fig. 2 to 3, fig. 2 is a schematic view of the dry distillation machine 200, and fig. 3 is a partially enlarged front end view of the dry distillation machine 200.

The dry distillation machine 200 comprises a machine barrel 201 and an inner barrel 220, wherein the inner barrel 220 is coaxially arranged in the machine barrel 201, an air flow channel through which high-temperature air flows is formed between the inner barrel 220 and the machine barrel 201, a material feeding channel for pushing biomass fuel is formed in the inner barrel 220, a spiral material pushing shaft 210 with a spiral plate for pushing material is rotatably arranged in the inner barrel 220, two ends of the inner barrel 220 are fixedly arranged on a high-temperature air supply box 204 and a medium-temperature air exhaust box 203 in a penetrating manner, the high-temperature air supply box 204 and the medium-temperature air exhaust box 203 are identical in structure, a material feeding box 211 communicated with the inner barrel 220 is arranged on the inner barrel 220 and is positioned at one end close to the medium-temperature air exhaust box 203, the material feeding box 211 is connected with a raw material conversion barrel 103 so that the biomass fuel enters the material feeding channel of the inner barrel 220, two ends of the machine barrel 201 are rotatably arranged on the high-temperature air supply box 204 and the medium-temperature air exhaust box 203 in a sealing manner, a supporting wheel 202 for supporting the machine barrel 201 to rotate is arranged outside, and the high temperature air supply box 204 and the medium temperature air exhaust box 203 are both communicated with the air flow channel in the machine barrel 201, and the high temperature air for dry distillation is introduced from the high temperature air supply box 204, passes through the air flow channel and is exhausted from the medium temperature air exhaust box 203, therefore, the flow direction of the fuel in the machine barrel 201 is opposite to that of the high humidity dry distillation air, thereby ensuring the maximum heat radiation area, improving the dry distillation quality,

referring to fig. 4, fig. 4 is a partial enlarged view of the rear end of the dry distillation machine 200, one end of the inner cylinder 220 close to the high temperature air supply box 204 is fixedly provided with a gas-carbon separator 205, the gas-carbon separator 205 is used for separating gas and carbon slag generated by dry distillation, a carbon slag outlet at the bottom of the gas-carbon separator 205 is connected with a carbon output auger 213, and the gas is discharged from the top of the gas-carbon separator 205. In order to further clean dust in the fuel gas, a cyclone dust collector 218 is also fixedly installed in the gas-carbon separator 205, and a fuel gas discharge pipe 217 at the top of the cyclone dust collector 218 extends to the outside of the gas-carbon separator 205.

In order to make the high-temperature air uniformly distributed and flowing in the air flow channel, sealing plates are installed at two ends of the inside of the cylinder 201, a plurality of tubes 219 are fixedly connected between the two sealing plates, end nozzles of the tubes 219 are arranged on the sealing plates, and inner cavities of the tubes 219 form the air flow channel.

In this embodiment, the device further comprises a driving device for driving the barrel 201 to rotate, the driving device comprises a chain belt 207 and a motor 208, the chain belt 207 is fixedly assembled on the outer wall of the barrel 201, and the chain belt 207 is in transmission connection with the motor 208.

Referring to fig. 1 again, the high-temperature heat exchanger 501 and the low-temperature heat exchanger 500 have the same structure, a fuel gas flow passing pipe for passing fuel gas and an air pipe for passing heat exchange air are arranged in the high-temperature heat exchanger 501, an intermediate-temperature air pipe 900 is connected between the intermediate-temperature air exhaust box 203 and the air pipe of the high-temperature heat exchanger 501, a fan 209 is installed on the intermediate-temperature air pipe 900, a high-temperature air pipe 901 is connected between the other end of the air pipe of the high-temperature heat exchanger 501 and the high-temperature air inlet box, so that air flow circulation is formed among the intermediate-temperature air exhaust box 203, the high-temperature heat exchanger 501 and the high-temperature air inlet box, the air inlet end of the tar cracker 400 is connected with the fuel gas exhaust pipe 217, the air outlet end of the tar cracker 400 is connected with the fuel gas flow passing pipe of the high-temperature heat exchanger 501, the high-temperature heat exchanger 501 is connected with the fuel gas flow passing pipe of the low-temperature heat exchanger 500 in series, and the fuel gas discharged from the tar exhaust pipe 217 is purified by the cracker 400 and then is introduced into the high-temperature heat exchanger 501 and the low-temperature heat exchanger 500 for cooling, low temperature heat exchanger 500's gas flow tube export with spray tower 600 is connected, the gas export at spray tower 600 top pass through gas pipe 903 with divide gas pitcher 800 to connect, be equipped with draught fan 701 on the gas pipe 903, the gas after the cooling lets in and washes the cooling in spray tower 600, and the rethread divides gas pitcher 800 to divide gas to supply with outside for gas unit uses such as boiler 801, flue-cured tobacco house or community resident. In order to improve the safety of gas exhaust, a water seal 700 is also mounted on the gas pipe 903.

The spray tower 600 is assembled in the sedimentation tank 601, a water tank 602 is arranged on one side of the sedimentation tank 601, the water tank 602 and the sedimentation tank 601 form a circulation, and a cooling tower 603 is arranged in the water tank 602, so that the water in the sedimentation tank 601 is ensured to have a low temperature.

The air outlet branch pipe 302 on the hot blast stove 300 is connected with the high-temperature hot blast box, the air inlet branch pipe 301 on the hot blast stove 300 is connected with the high-temperature air pipe 901, what needs to be reminded is that a route changing valve is installed between the high-temperature hot blast box and the air inlet branch pipe 301 on the high-temperature air pipe 901, and the route changing valve is used for changing the air flow direction, so that the air in the high-temperature air pipe 901 can be directly introduced into the high-temperature hot blast box or directly introduced into the hot blast stove 300.

Referring to fig. 1, 2 and 4, in this embodiment, in order to realize the self-generation and self-supply continuous operation of the retort gas of the retort 200, a gas burner 212 is installed on the high-temperature air supply tank 204, the gas burner 212 is connected with the gas pipe 903 through a gas guide pipe 904, so that the cooled gas enters the gas burner 212, the gas burner 212 is connected with the air pipe of the low-temperature heat exchanger 500 through a low-temperature air pipe 902, a blower 502 is installed at the other end of the air pipe of the low-temperature heat exchanger 500, the blower 502 exchanges heat between the external air and the high-temperature gas through the low-temperature heat exchanger 500 to form low-temperature hot air, the low-temperature hot air is introduced into the gas burner 212 through the low-temperature air pipe 902 to serve as a combustion improver, so that the gas is combusted in the high-temperature air supply tank 204, so as to heat the air in the high-temperature air pipe 901, and the carbon outlet 206 is installed at the bottom of the high-temperature air supply tank 204, the char remover 206 is used to remove dust deposited by the blown-in gas from the high temperature air box 204.

It should be reminded that the dry distillation device adopts two sets of heat source systems, namely, the hot-blast stove 300 supplies heat and the gas self-heat supply, when the dry distillation device is started initially, the hot-blast stove 300 supplies heat, namely, the path change valve is closed, the high-temperature air pipe 901 is communicated with the hot-blast stove 300 and supplies high-temperature air to the dry distillation machine 200, after the dry distillation device runs for three minutes, the gas generated by dry distillation directly enters the high-temperature air supply box 204 through the air duct 904, at the moment, the path change valve is opened, the valve on the air inlet branch pipe 301 is closed, so that the high-temperature air pipe 901 is directly communicated with the high-temperature air supply box 204, the introduced air is combusted and heated by the gas burner 212, and the hot-blast stove 300 is closed, namely, the gas enters a gas circulation self-heat supply mode.

In order to detect the gas generation amount and facilitate entering a gas circulation self-heating mode, the gas circulation self-heating system further comprises a gas detection pipe 216, the gas detection pipe 216 is fixedly installed at the top of the gas discharge pipe 217 and is not communicated with the gas discharge pipe 217, a waste gas burner 214 is installed on the gas detection pipe 216, the gas detection pipe 216 is connected with the gas guide pipe 904 through a connecting pipe 215, namely, a part of gas in the gas guide pipe 904 enters the gas detection pipe 216, if the waste gas burner 214 can be ignited, the air in the gas guide pipe 904 is completely exhausted, at this time, the gas burner 212 can be ignited, the hot blast stove 300 is closed, and the system enters the gas circulation self-heating mode.

In this embodiment, in order to separate gas from water in the gas after the spray cooling, a gas-water separator 604 is installed in the gas pipe 903.

Referring to fig. 5, in the present embodiment, specifically, a flame partition 405 and a gas partition 412 are installed in the tar cracker 400 in a longitudinal direction, the flame partition 405 and the gas partition 412 divide the interior of the tar cracker 400 into a front chamber 406, a middle chamber 414 and a rear chamber 413, the front cavity 406 is provided with a diesel combustor 408, a combustion improver pipe 407 on the diesel combustor 408 is connected with the low-temperature air pipe 902, a gas inlet pipe 409 and a charcoal inlet 410 which are connected with the gas outlet pipe 217 are fixedly arranged at the top of the middle cavity 414, a fixed carbon conversion box 403 is assembled at the charcoal inlet 410, a fixed carbon conveyor 404 is assembled on the fixed carbon conversion box 403, the bottom of the middle cavity 414 is equipped with a slag discharging pipe 415, the pipe orifice of the slag discharging pipe 415 sinks into the water seal tank 401, one side of the water seal tank 401 is connected with a slag discharging machine 402, and a gas outlet pipe 411 for discharging gas is arranged on the rear cavity 413.

The tar cracker 400 is suitable for heating and filtering biomass fuel gas, has high heat value and purer fuel gas quality, this tar cracker 400 design's three vertically cavity, diesel oil combustor 408 is installed to the preceding cavity 406 body, the lower part that the perpendicular entering of lumen 414 gas was filled with the coke, the back cavity 413 body is gas buffer space, diesel oil lights the coke under the effect of combustion improver and gets into red-hot state, red-hot coke can consume the partial oxygen in the gas and can catch tar and the micronic dust that the gas carried, consume the oxygen in the gas totally, the limit has reduced the oxygen content of gas, the gas passes red-hot coke layer tar schizolysis to permanent combustible gas molecule, both provided the gas calorific value and obtained the filtration in red-hot cinder, the tar cracker 400 has novel design, is not only suitable for the tar at the gasification part of tobacco stems and tobacco stalks, but also can be widely applied to cracking tar by other biomass gas.

Referring to fig. 6 and 7, in this embodiment, specifically, the spray tower 600 includes a lower section of thick bamboo 6002 located at the bottom, an upper section of thick bamboo 6008 located at the top, and a first submersible pump 6001, the lower section of thick bamboo 6002 and the upper section of thick bamboo 6008 are run through from top to bottom, the top of the upper section of thick bamboo 6008 has an air outlet 6013, the periphery of the upper section of thick bamboo 6008 is surrounded by a plurality of annular distributive pipes 6007, a plurality of first branch pipes 6009 are installed to the inner ring side of the annular distributive pipe 6007, the first branch pipes 6009 extend into the tower body and are provided with an atomizing nozzle 60376010, a first vertical pipe 6005 is installed on the first submersible pump 6001, the first vertical pipe 6005 is connected with the distributive pipe 6007, and the connection is provided with a first valve 6006, and an air inlet pipe 6003 for gas to enter is installed in the lower section of thick bamboo 6002.

The multilayer distributive pipe 6007 in the upper section of thick bamboo 6008 of the spray tower 600, the spray head 6037 is installed on each distributive pipe 6007, and water sprayed from the spray head 6037 enables the inner cavity of the whole spray tower 600 to be in an atomized state, so that tar and micro-dust carried by the dry distillation gas are washed, the spray tower is suitable for heating and filtering of biomass gas, the heat value is high, and the gas quality is purer.

The spray tower 600 is provided with manholes 6004 with the number corresponding to that of the multilayer water distribution pipes 6007, so that the spray heads 6037 can be conveniently overhauled and replaced.

In order to capture the water mist, a water-gas separation plate 6012 is fixedly installed in the spray tower 600 below the gas outlet 6013 through a bracket 6011. The gas with light specific gravity passes through the atomizing space in the spray tower 600 cylinder to be filtered, and the water molecules with high specific gravity carried by the gas are thrown into the bottom of the spray tower 600 cylinder.

Referring to fig. 8, in this embodiment, specifically, the top opening of the cooling tower 603 is equipped with a fan 6038, the fan 6038 is equipped with a motor 6032, a coil water pipe 6031 surrounds the outside of the cooling tower 603, a vertical second vertical pipe 6035 is installed on the coil water pipe 6031, a second submersible pump 6036 is installed at the bottom of the second vertical pipe 6035, the second submersible pump 6036 sinks into the water tank 602, a plurality of second branch pipes 6033 are fixedly installed on the inner ring side of the coil water pipe 6031, a second valve 6034 is installed on the second branch pipe 6033, the end of the second branch pipe 6033 extends to a nozzle 6037 with a downward nozzle opening is fixedly installed in the cooling tower 603, a condensation pipe 6039 is arranged below the nozzle 6037 in the cooling tower 603, the condensation pipe 6039 is a spiral coiled pipe body gradually reduced from top to bottom, and two ends of the condensation pipe 6039 extend to the outside of the tower body.

This cooling tower 603 is installed in pond 602, and in second immersible pump 6036 sinks pond 602, the both ends of condenser pipe 6039 all are connected with sedimentation tank 601 and form the circulation to make the water in the pond 602 carry out the cold source of cooling as the water in the sedimentation tank 601, fan 6038 collects steam and discharges to the air, thereby reaches good cooling effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the contents of the present specification and drawings, or any other related technical fields, which are directly or indirectly applied thereto, are included in the scope of the present invention.

Claims (8)

1. A tobacco stem and tobacco stem dry distillation machine is characterized in that: the device comprises a machine barrel and an inner barrel, wherein the inner barrel is coaxially arranged and is arranged in the machine barrel, an air flow channel through which high-temperature air flows is formed between the inner barrel, a biomass fuel propelled material feeding channel is formed in the inner barrel, a spiral material pushing shaft with a spiral plate and used for pushing materials is installed in the inner barrel in a rotating mode, two ends of the inner barrel are fixedly arranged on a high-temperature air supply box and a medium-temperature air exhaust box in a penetrating mode, a feeding box communicated with the inner barrel is arranged at one end, close to the medium-temperature air exhaust box, of the inner barrel, two ends of the machine barrel are installed on the high-temperature air supply box and the medium-temperature air exhaust box in a sealing and rotating mode, the high-temperature air supply box and the medium-temperature air exhaust box are communicated with the air flow channel in the machine barrel, and an air-carbon separator is fixedly installed at one end, close to the high-temperature air supply box, of the inner barrel.

2. The tobacco stem and tobacco stem dry distillation machine according to claim 1, wherein: the air flow passage is characterized in that sealing plates are arranged at two ends of the machine barrel, a plurality of tubes are fixedly connected between the two sealing plates, the end pipe orifices of the tubes are arranged on the sealing plates, and the inner cavities of the tubes form the air flow passage.

3. The tobacco stem and tobacco stem dry distillation machine according to claim 1, wherein: and a gas burner is arranged on the high-temperature air supply box.

4. The tobacco stem and tobacco stem dry distillation machine according to claim 3, wherein: and a carbon discharging machine is arranged at the bottom of the high-temperature air supply box.

5. The tobacco stem and tobacco stem dry distillation machine according to claim 1, wherein: the automatic feeding device is characterized by further comprising a driving device for driving the machine barrel to rotate, wherein the driving device comprises a chain endless belt and a motor, the chain endless belt is fixedly assembled on the outer wall of the machine barrel, and the chain endless belt is in transmission connection with the motor.

6. The tobacco stem and tobacco stem dry distillation machine according to claim 1, wherein: the device also comprises an externally arranged riding wheel for supporting the machine barrel to rotate.

7. The tobacco stem and tobacco stem dry distillation machine according to claim 1, wherein: a cyclone dust collector is fixedly installed in the gas-carbon separator, and a fuel gas discharge pipe at the top of the cyclone dust collector extends to the outside of the gas-carbon separator.

8. The tobacco stem and tobacco stem dry distillation machine as claimed in claim 7, wherein: still include the gas detection pipe, the gas detection pipe fixed mounting be in the top of gas discharge pipe, install the waste gas combustor on the gas detection pipe.

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