CN113388420A - Comprehensive utilization device for dry distillation of tobacco stems and tobacco stalks - Google Patents

Abstract

The invention aims to provide a comprehensive utilization device for dry distillation of tobacco stems and tobacco stems, which comprises a feeding device, a dry distillation machine, a tar cracker, a hot blast stove, a spray tower, a gas distribution tank, a low-temperature heat exchanger and a high-temperature heat exchanger which have the same structure, and a plurality of gas path connecting pipe fittings with valves; the dry distillation machine comprises a machine barrel and an inner barrel, wherein the inner barrel is coaxially arranged within the machine barrel, an air flow channel through which high-temperature air flows is formed between the inner barrel and the machine barrel, a biomass fuel propelled material feeding channel is formed inside the inner barrel, a spiral material pushing shaft with a spiral plate and used for pushing materials 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 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, and 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 mode.

Description

Comprehensive utilization device for dry distillation of tobacco stems and tobacco stalks

Technical Field

The invention relates to the field of biomass gasification, in particular to a comprehensive utilization device for dry distillation of tobacco stems and stalks of tobacco stalks.

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.

Disclosure of Invention

The invention aims to provide a comprehensive utilization device for dry distillation of tobacco stems and stalks of tobacco stalks, which aims to solve the problems in the background technology.

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

a comprehensive utilization device for dry distillation of tobacco stems and tobacco stems comprises a feeding device, a dry distillation machine, a tar cracker, a hot blast furnace, a spray tower, a gas separation tank, a low-temperature heat exchanger and a high-temperature heat exchanger which have the same structure, and a plurality of gas path connecting pipe fittings with valves;

the dry distillation machine 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, close to the medium-temperature air exhaust box, of the inner barrel, 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 both communicated with the air flow channel in the machine barrel, an air-carbon separator is fixedly arranged at one end, close to the high-temperature air supply box, and a cyclone dust collector is fixedly arranged in the air-carbon separator, a fuel gas discharge pipe at the top of the cyclone dust collector extends to the outside of the gas-carbon separator;

the device comprises a medium-temperature air exhaust box, a high-temperature air inlet box, a tar cracker, a spray tower, a gas distribution tank, a medium-temperature air pipe, a fan, a high-temperature air inlet box, a tar cracker, a gas exhaust pipe, a gas overflow pipe, a spray tower and a gas distribution tank, wherein the medium-temperature air pipe is connected between the medium-temperature air exhaust box and an air pipe of the high-temperature heat exchanger;

an air outlet branch pipe on the hot blast stove is connected with the high-temperature hot blast box, an air inlet branch pipe on the hot blast stove is connected with the high-temperature air pipe, and a path changing valve is arranged between the high-temperature hot blast box and the air inlet branch pipe on the high-temperature air pipe.

As a further scheme of the invention: 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 scheme of the invention: install the gas combustion machine on the high temperature air supply case, the gas combustion machine pass through the air duct with the gas union coupling, the gas combustion machine pass through the low temperature tuber pipe with low temperature heat exchanger's air piping connection, the air-blower is installed to low temperature heat exchanger's the air hose other end.

As a further scheme of the invention: still include the gas detection tube, the gas detection tube fixed mounting be in the top of gas discharge pipe, install the waste gas combustor on the gas detection tube, the gas detection tube pass through the connecting pipe with the air duct is connected.

As a further scheme of the invention: and a gas-water separator is arranged on the gas pipe.

As a further scheme of the invention: the tar cracker is internally provided with a longitudinally-arranged flame partition wall and a gas partition wall, the flame partition wall and the gas partition wall divide the inside of the tar cracker into a front cavity, a middle cavity and a rear cavity, the front cavity is provided with a diesel burner, a combustion improver pipe on the diesel burner is connected with a low-temperature air pipe, the top of the middle cavity is fixedly provided with a gas inlet pipe connected with a gas discharge pipe and a carbon inlet, the carbon inlet is provided with a fixed carbon conversion box, the fixed carbon conversion box is provided with a fixed carbon conveyor, the bottom of the middle cavity is provided with a slag discharge pipe, the opening of the slag discharge pipe sinks into a water seal groove, one side of the water seal groove is connected with a slag discharge machine, and the rear cavity is provided with a gas outlet pipe for discharging gas.

As a further scheme of the invention: the spray tower includes the lower section of thick bamboo that is located the bottom, is located the upper segment section of thick bamboo and the first immersible pump at top, link up from top to bottom with the upper segment section of thick bamboo lower section of thick bamboo, the top of the upper segment section of thick bamboo has the gas outlet, the peripheral surrounding of the upper segment section of thick bamboo is provided with multilayer annular distributive pipe, a plurality of first branch pipes are installed to the inner ring side of annular distributive pipe, and first branch pipe extends to in the tower body and installs the atomizer, install first riser on the first immersible pump, first riser and distributive pipe connection, and the junction installs the valve, install the intake pipe that supplies the gas to get into in the lower section of thick bamboo.

As a further scheme of the invention: and the upper section of barrel is provided with manholes with the number corresponding to that of the multilayer shunt pipes.

As a further scheme of the invention: and a water-gas separation plate is fixedly arranged below the gas outlet in the spray tower through a support.

As a further scheme of the invention: the open-top of cooling tower is equipped with the fan, and the fan is equipped with the motor, and the outside of cooling tower is around being equipped with the coil pipe, install vertical second riser on the coil pipe, the second immersible pump is installed to the bottom of second riser, and the second immersible pump sinks in the pond, the interior ring side fixed mounting of coil pipe has a plurality of second branch pipes, install the valve on the second branch pipe, the tip of second branch pipe extends to in the cooling tower and fixed mounting have spout shower nozzle down, the below that just is located the shower nozzle in the cooling tower has the condenser pipe, the spiral that the condenser pipe is top-down undergauge gradually coils the formula body, the both ends of condenser pipe extend to outside the tower body.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention is suitable for tobacco stems with roots and waste tobacco stems, can fully utilize waste biomass fuel and generate clean energy such as fuel gas, tar and the like, and improves the resource utilization and conversion efficiency;

2. the dry distillation machine is required to be provided with the hot blast stove when being started, and after the dry distillation fuel gas generated in the dry distillation machine is ignited by the flame tester after the fuel in the dry distillation machine is subjected to thermochemical reaction for about 3 minutes, the dry distillation fuel gas is changed to be produced and supplied for continuous operation, so that the self-circulation of hot air is realized, and the dry distillation machine is clean and efficient;

3. the tar cracker provided by the series device of the dry distillation machine is suitable for heating and filtering biomass gas, so that the heat value is high, the gas quality is cleaner, the tar cracker is provided with three vertical cavities, the front cavity is provided with a diesel oil burner, coke is filled at the lower part of the vertical entering of the middle cavity gas, the rear cavity is a gas buffer space, the diesel oil ignites the coke under the action of a combustion improver to enter a glowing state, the glowing coke can consume part of oxygen in the gas and can capture tar and micro dust carried by the gas, the oxygen in the gas is consumed completely, the oxygen content of the gas is reduced to the utmost extent, the gas penetrates through the glowing coke layer to crack the tar into permanent combustible gas molecules, and the gas heat value is provided and the gas is filtered in the glowing coke slag;

4. the series device of the dry distillation machine is provided with a plurality of layers of water distribution pipes in an upper section cylinder of a spray tower, each water distribution pipe is provided with a spray head, water sprayed by the spray heads enables the inner cavity of the whole spray tower to be in an atomized state, thereby washing tar and micro-dust carried by dry distillation gas, being suitable for heating and filtering biomass gas, and enabling the heat value to be high and the gas quality to be cleaner;

5. the dry distillation machine series device is provided with the spiral coiled condenser pipe gradually reducing from top to bottom in the cooling tower, so that the condenser pipe is integrally formed into a funnel-shaped outline, the overflowing speed of fluid in the condenser pipe can be increased, and the cooling 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 (10)

1. The utility model provides a offal tobacco rod dry distillation comprehensive utilization device which characterized in that: comprises a feeding device, a dry distillation machine, a tar cracker, a hot blast furnace, a spray tower, a gas separation tank, a low-temperature heat exchanger and a high-temperature heat exchanger with the same structure and a plurality of gas path connecting pipe fittings with valves;

the dry distillation machine 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, close to the medium-temperature air exhaust box, of the inner barrel, 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 both communicated with the air flow channel in the machine barrel, an air-carbon separator is fixedly arranged at one end, close to the high-temperature air supply box, and a cyclone dust collector is fixedly arranged in the air-carbon separator, a fuel gas discharge pipe at the top of the cyclone dust collector extends to the outside of the gas-carbon separator;

the device comprises a medium-temperature air exhaust box, a high-temperature air inlet box, a tar cracker, a spray tower, a gas distribution tank, a medium-temperature air pipe, a fan, a high-temperature air inlet box, a tar cracker, a gas exhaust pipe, a gas overflow pipe, a spray tower and a gas distribution tank, wherein the medium-temperature air pipe is connected between the medium-temperature air exhaust box and an air pipe of the high-temperature heat exchanger;

an air outlet branch pipe on the hot blast stove is connected with the high-temperature hot blast box, an air inlet branch pipe on the hot blast stove is connected with the high-temperature air pipe, and a path changing valve is arranged between the high-temperature hot blast box and the air inlet branch pipe on the high-temperature air pipe.

2. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: 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 comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: install the gas combustion machine on the high temperature air supply case, the gas combustion machine pass through the air duct with the gas union coupling, the gas combustion machine pass through the low temperature tuber pipe with low temperature heat exchanger's air piping connection, the air-blower is installed to low temperature heat exchanger's the air hose other end.

4. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 3, wherein: still include the gas detection tube, the gas detection tube fixed mounting be in the top of gas discharge pipe, install the waste gas combustor on the gas detection tube, the gas detection tube pass through the connecting pipe with the air duct is connected.

5. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: and a gas-water separator is arranged on the gas pipe.

6. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: the tar cracker is internally provided with a longitudinally-arranged flame partition wall and a gas partition wall, the flame partition wall and the gas partition wall divide the inside of the tar cracker into a front cavity, a middle cavity and a rear cavity, the front cavity is provided with a diesel burner, a combustion improver pipe on the diesel burner is connected with a low-temperature air pipe, the top of the middle cavity is fixedly provided with a gas inlet pipe connected with a gas discharge pipe and a carbon inlet, the carbon inlet is provided with a fixed carbon conversion box, the fixed carbon conversion box is provided with a fixed carbon conveyor, the bottom of the middle cavity is provided with a slag discharge pipe, the opening of the slag discharge pipe sinks into a water seal groove, one side of the water seal groove is connected with a slag discharge machine, and the rear cavity is provided with a gas outlet pipe for discharging gas.

7. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: the spray tower includes the lower section of thick bamboo that is located the bottom, is located the upper segment section of thick bamboo and the first immersible pump at top, link up from top to bottom with the upper segment section of thick bamboo lower section of thick bamboo, the top of the upper segment section of thick bamboo has the gas outlet, the peripheral surrounding of the upper segment section of thick bamboo is provided with multilayer annular distributive pipe, a plurality of first branch pipes are installed to the inner ring side of annular distributive pipe, and first branch pipe extends to in the tower body and installs the atomizer, install first riser on the first immersible pump, first riser and distributive pipe connection, and the junction installs the valve, install the intake pipe that supplies the gas to get into in the lower section of thick bamboo.

8. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 7, wherein: and the upper section of barrel is provided with manholes with the number corresponding to that of the multilayer shunt pipes.

9. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 7, wherein: and a water-gas separation plate is fixedly arranged below the gas outlet in the spray tower through a support.

10. The comprehensive utilization device for dry distillation of tobacco stems and tobacco stems as claimed in claim 1, is characterized in that: the open-top of cooling tower is equipped with the fan, and the fan is equipped with the motor, and the outside of cooling tower is around being equipped with the coil pipe, install vertical second riser on the coil pipe, the second immersible pump is installed to the bottom of second riser, and the second immersible pump sinks in the pond, the interior ring side fixed mounting of coil pipe has a plurality of second branch pipes, install the valve on the second branch pipe, the tip of second branch pipe extends to in the cooling tower and fixed mounting have spout shower nozzle down, the below that just is located the shower nozzle in the cooling tower has the condenser pipe, the spiral that the condenser pipe is top-down undergauge gradually coils the formula body, the both ends of condenser pipe extend to outside the tower body.

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