Straw pyrolysis carbonization and energy recycling device

Abstract

The utility model discloses a straw pyrolysis carbonization and energy recycling device. The straw pyrolysis carbonization and energy recycling device comprises a crushing unit, a mixing unit, a drying unit, a pyrolysis unit, a collecting unit and a cooling unit which are connected in sequence. The utility model aims at using the recycled biochar for soil improvement and improving the soil quality. The device has high treatment efficiency and high-quality carbonized products, supports continuous operation, simplifies the operation process and reduces the operation cost. Meanwhile, the carbonization efficiency and the heat utilization efficiency are remarkably improved, and an innovative solution is provided for the development of a biomass carbonization technology.

Description

TECHNICAL FIELD

[0001] The utility model relates to a straw pyrolysis technical field, especially relates to a straw pyrolysis carbonization and energy recycling device. BACKGROUND

[0002] Straw is the plant residue after crop harvest, if direct burning, will produce harmful gas and smoke, cause negative influence to air quality. In order to protect the environment, improve energy utilization, currently appeared the processing mode of preparing biochar by straw pyrolysis. The product obtained by straw pyrolysis, namely biochar, can be used as organic fertilizer.

[0003] But with the popularization of existing pyrolysis device, the following problems are found in the use process:

[0004] 1. Some existing pyrolysis device is inconvenient to crush and push the straw in the process of use, heat cannot be effectively transferred, the pyrolysis degree is low, the straw is accumulated in the pyrolysis device, the pyrolysis speed is slow, influences the pyrolysis carbonization process implementation popularization.

[0005] 2. And the water content of the pyrolysis substance required by straw pyrolysis has the requirement, the water content is too high to achieve the pyrolysis effect, and the prepared biochar content is low and other substances are not released sufficiently.

[0006] 3. Lack of effective utilization of other substances except biochar after pyrolysis in industry, which causes irreversible damage to the environment. SUMMARY

[0007] In order to solve the technical problems of slow pyrolysis speed, poor water content control and low pyrolysis product utilization rate of the existing straw pyrolysis carbonization device, the utility model provides a straw pyrolysis carbonization and energy recycling device.

[0008] In order to realize the above technical purpose, the technical scheme of the utility model is,

[0009] A straw pyrolysis carbonization and energy recycling device, comprising a crushing unit 1, a mixing unit, a drying unit, a pyrolysis unit, a collecting unit and a cooling unit.

[0010] The crushing unit 1 comprises two-stage crushing subunit, filter screen 5, discharge port 6 and conveyor, the top of two-stage crushing subunit is provided with crushing inlet, the filter screen 5 is arranged at the bottom of two-stage crushing subunit, the discharge port 6 is arranged below the filter screen 5 and connected to the inlet of conveyor;

[0011] The mixing unit comprises a blender 8 and a conveying belt, the blender 8 comprises a hollow box, a mixing assembly is arranged in the box, a box inlet connected to the conveyor and an organic material inlet are arranged at the top of the box, and a box outlet connected to the drying unit is arranged at the bottom of the box;

[0012] The drying unit comprises a slide-type feeder 14, a funnel-type feeding port 15, an oven 16, at least two conveying belts 17 and a heating pipe 18, the slide-type feeder 14 is connected to the box outlet of the mixing unit, the funnel-type feeding port 15 is arranged at the outlet of the slide-type feeder 14, the conveying belts 17 are horizontally and uniformly arranged in the oven 16 from top to bottom, the running directions of the two conveying belts 17 adjacent to each other are opposite, the starting end of the lower conveying belt 17 exceeds the end of the upper conveying belt 17 in the vertical direction, so that an S-shaped conveying route from top to bottom is formed in the oven 16, and the starting end of the uppermost conveying belt 17 is arranged below the outlet of the funnel-type feeding port 15; the heating pipe 18 is arranged on the side wall of the oven 16;

[0013] The pyrolysis unit comprises a hollow pyrolysis furnace 20, a pyrolysis stirring shaft 25, a pyrolysis motor 21 and an electromagnetic heating coil 23, the pyrolysis stirring shaft 25 is horizontally arranged in the pyrolysis furnace 20, the pyrolysis motor 21 is arranged outside the pyrolysis furnace 20 and connected to and drives the pyrolysis stirring shaft 25 to rotate, and the electromagnetic heating coil 23 is arranged around the outer wall of the pyrolysis furnace 20, and the pyrolysis furnace inlet 22 is connected to the outlet of the drying unit;

[0014] The collection unit comprises a flue gas collection unit and a carbonized material collection tank 41, the flue gas collection unit comprises multiple-stage condensation collection sub-units connected in sequence, and the inlet is connected to the top of the pyrolysis furnace 20 through a pipeline; the carbonized material collection tank 41 is connected to the carbonized material outlet of the pyrolysis furnace 20 through a pipeline and a cooling unit;

[0015] The cooling unit is arranged between the pyrolysis unit and the carbonized material collection unit, and comprises a water vapor collection head 19, a condenser 38, a water tank 37, a water pump 36, a water cooling tank 35 provided with a sandwich outer wall and an air cooling tank 39 provided with a sandwich outer wall, the water vapor collection head 19 is arranged at the top of the oven 16 and connected to the condenser 38 through a pipeline, the outlet of the condenser 38 is connected to the water tank 37, the water tank 37 is connected to the inlet of the sandwich outer wall of the water cooling tank 35 through the water pump 36 to cool the water cooling tank 35, the sandwich outer wall of the water cooling tank 35 is further provided with a water outlet, the water outlet is connected to the condenser 38 through a pipeline, the inlet of the water cooling tank 35 is connected to the outlet of the pyrolysis unit, the outlet of the water cooling tank 35 is connected to the inlet of the air cooling tank 39, the inlet of the sandwich outer wall of the air cooling tank 39 is connected to the air blower 40, and the outlet of the air cooling tank 39 is connected to the carbonized material collection tank 41.

[0016] The two-stage crushing subunit of the crushing unit 1 comprises a crusher 2 and a spiral blade machine connected in sequence from top to bottom, the spiral blade machine comprises a hollow spiral box, a spiral motor 4, a spiral shaft and spiral blades 3, the spiral shaft is horizontally arranged in the spiral box, the spiral blades 3 are fixed on the spiral shaft, and the spiral motor 4 is arranged outside the spiral box and the driving shaft of the spiral motor 4 extends into the spiral box and is connected with the spiral shaft.

[0017] The conveying device of the crushing unit 1 is a spiral conveyor 7, the height of the inlet of the spiral conveyor 7 is lower than the height of the outlet, so that the material is conveyed from bottom to top.

[0018] The mixing assembly of the blender 8 is a spiral mixing shaft body 10 provided with spiral blades 11 and a blending motor 9, the blending motor 9 is arranged outside the box body of the blender 8 and drives the spiral mixing shaft body 10 to rotate.

[0019] The box body of the blender 8 is further provided with at least one water supplementing nozzle 13, the water supplementing nozzle 13 is connected to an external water source to convey water into the box body of the blender 8.

[0020] The pyrolysis unit is further provided with a temperature detector 24, the temperature detector 24 is arranged at a middle position in the pyrolysis furnace 20 to collect temperature information in the pyrolysis furnace 20.

[0021] The pyrolysis stirring shaft 25 of the pyrolysis unit is a shaft body provided with spiral blades, the spiral blades push the material to move towards the outlet at the tail of the pyrolysis furnace 20 when rotating.

[0022] The multi-stage condensation collection subunit of the flue gas collection unit comprises, in sequence, a heavy tar condensation tower 26, a light tar condensation tower 28, a vinegar liquid condensation tower 30, a filter tower 33 and a combustible gas collection cabinet 34; the heavy tar condensation tower 26 is provided with an inlet in the side wall and is connected to the top of the pyrolysis furnace 20 through a pipeline; the bottom of the heavy tar condensation tower 26 is provided with a heavy tar collection tank 27, and the upper part is connected to the inlet of the light tar condensation tower 28 through a pipeline; the bottom of the light tar condensation tower 28 is provided with a light tar collection tank 29, and the top is connected to the spray head 31 at the top of the vinegar liquid condensation tower 30 through a pipeline; the bottom of the vinegar liquid condensation tower 30 is provided with a vinegar liquid collection tank 32, and the upper part of the vinegar liquid condensation tower 30 is connected to the filter tower 33 through a pipeline; the outlet of the filter tower 33 is connected to the combustible gas collection cabinet 34.

[0023] The technical effect of the utility model lies in that the biochar produced after pyrolysis and carbonization can be cooled and stored at low energy consumption, the biochar obtained by pyrolysis can be used for soil improvement and improvement of soil quality, other pyrolysis products, including heavy tar, light tar, vinegar liquid, combustible gas and other substances, can be separated, purified and reasonably collected, environmental pollution is reduced, and efficient energy utilization is realized. The utility model has high processing efficiency and high-quality carbonization products, supports continuous operation, simplifies the operation process and reduces operation cost. At the same time, the carbonization efficiency and heat utilization efficiency are significantly improved, and an innovative solution is provided for the development of biomass carbonization technology. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the utility model.

[0025] Figure 2 It is a structural schematic view of the utility model grinder.

[0026] 1 is a crushing unit; 2 is a rubbing crusher; 3 is a spiral blade; 4 is a spiral motor; 5 is a filter screen; 6 is a discharge port; 7 is a spiral conveyor; 8 is a blender; 9 is a blending motor; 10 is a spiral mixing shaft body; 11 is a spiral blade; 12 is an organic matter inlet; 13 is a water supplement nozzle; 14 is a slide-type feeder; 15 is a funnel-type feeding port; 16 is an oven; 17 is a conveying belt; 18 is a heating pipe; 19 is a water vapor collection head; 20 is a pyrolysis furnace; 21 is a pyrolysis furnace inlet; 23 is an electromagnetic heating coil; 24 is a temperature detector; 25 is a pyrolysis stirring shaft; 26 is a heavy tar condensation tower; 27 is a heavy tar collection tank; 28 is a light tar condensation tower; 29 is a light tar collection tank; 30 is a vinegar liquid condensation tower; 31 is a spray head; 32 is a vinegar liquid collection tank; 33 is a filter tower; 34 is a combustible gas collection cabinet; 35 is a water cooling box; 36 is a water pump; 37 is a water tank; 38 is a condenser; 39 is an air cooling box; 40 is a blower; 41 is a carbonized material collection tank. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments will be described below with reference to the drawings. It should be noted that the drawings only show some of the embodiments of the present application, and not all. It is obvious that any person skilled in the art can derive other possible embodiments from these embodiments without creative work, which should be regarded as the protection scope of the present application.

[0028] Referring to Figure 1 The straw pyrolysis carbonization and energy recycling device disclosed in the embodiment comprises, in sequence, a crushing unit 1, a mixing unit, a drying unit, a pyrolysis unit, a collection unit and a cooling unit.

[0029] The crushing unit 1 of the embodiment comprises two-stage crushing sub-units, a filter screen 5, a discharge port 6 and a conveyor. The top of the two-stage crushing sub-units is provided with a crushing feeding port. The filter screen 5 is arranged at the bottom of the two-stage crushing sub-units. The discharge port 6 is arranged below the filter screen 5 and connected to the inlet of the conveyor. The two-stage crushing sub-units of the crushing unit 1 comprise, in sequence from top to bottom, a rubbing crusher 2 and a spiral blade machine. The spiral blade machine comprises a hollow spiral box, a spiral motor 4, a spiral shaft and a spiral blade 3. The spiral shaft is arranged horizontally in the spiral box. The spiral blade 3 is fixed on the spiral shaft. The spiral motor 4 is arranged outside the spiral box. The driving shaft of the spiral motor 4 extends into the spiral box and is connected to the spiral shaft.

[0030] Referring to Figure 2In the embodiment, the two-stage crushing subunit of the crushing unit 1 comprises a crusher 2 and a spiral blade machine connected in sequence from top to bottom, wherein the crusher 2 can be implemented by a common crushing device. The spiral blade machine comprises a hollow spiral box, a spiral motor 4, a spiral shaft and spiral blades 3. The spiral shaft is horizontally arranged in the spiral box, the spiral blades 3 are fixed on the spiral shaft, and the spiral motor 4 is arranged outside the spiral box and the driving shaft of the spiral motor 4 extends into the spiral box and is connected with the spiral shaft.

[0031] The conveyor of the crushing unit 1 in the embodiment is a spiral conveyor 7, the height of the inlet of the spiral conveyor 7 is lower than the height of the outlet, so as to convey the materials from bottom to top, thereby controlling the conveying speed of the materials not to be too fast.

[0032] The mixing unit in the embodiment comprises a blender 8 and a conveying belt. The blender 8 comprises a hollow box body, a mixing assembly is arranged in the box body, a box inlet connected with the conveyor and an organic material inlet are arranged on the top of the box body, and a box outlet connected with the drying unit is arranged on one side of the bottom of the box body. The organic material inlet is generally used for inputting organic materials such as livestock and poultry manure, so as to realize accelerated fermentation of the straws. The mixing assembly of the blender 8 is a spiral mixing shaft body 10 provided with spiral blades 11 and a blending motor 9. The blending motor 9 is arranged outside the box body of the blender 8 and drives the spiral mixing shaft body 10 to rotate. In order to control the humidity in the blender 8, two water supplementing nozzles 13 are arranged on the top wall of the box body of the blender 8 and connected with an external water source to supply water to the box body of the blender 8.

[0033] The drying unit in the embodiment comprises a slide-type feeder 14, a funnel-type feeding port 15, an oven 16, five conveying belts 17 and heating pipes 18. The slide-type feeder 14 is connected with the box outlet of the mixing unit, the funnel-type feeding port 15 is arranged at the outlet of the slide-type feeder 14, the conveying belts 17 are horizontally and uniformly arranged in the oven 16 from top to bottom, the running directions of the two conveying belts 17 adjacent to each other are opposite, the starting end of the lower conveying belt 17 exceeds the end of the upper conveying belt 17 in the vertical direction, so as to form an S-shaped conveying route in the oven 16 from top to bottom, thereby prolonging the moving distance of the materials in the oven as much as possible and turning over the materials when falling from the upper conveying belt to the lower conveying belt, so as to uniformly dry the materials. The starting end of the uppermost conveying belt 17 in the embodiment is arranged below the outlet of the funnel-type feeding port 15. The heating pipes 18 are arranged on the side wall of the oven 16.

[0034] The pyrolysis unit of the embodiment comprises a hollow pyrolysis furnace 20, a pyrolysis stirring shaft 25, a pyrolysis motor 21 and an electromagnetic heating coil 23. The pyrolysis stirring shaft 25 is horizontally arranged in the pyrolysis furnace 20. The pyrolysis motor 21 is arranged outside the pyrolysis furnace 20 and connected to and drives the pyrolysis stirring shaft 25 to rotate. The electromagnetic heating coil 23 is arranged around the outer wall of the pyrolysis furnace 20. The pyrolysis furnace inlet 22 is connected to the outlet of the drying unit. In order to grasp the temperature of the pyrolysis unit, the pyrolysis unit of the embodiment is further provided with a temperature detector 24 arranged at the middle position in the pyrolysis furnace 20 to collect the temperature information in the pyrolysis furnace 20.

[0035] The pyrolysis stirring shaft 25 of the pyrolysis unit of the embodiment is a shaft body provided with helical blades. When the helical blades rotate, they push the materials towards the outlet at the tail of the pyrolysis furnace 20, thereby playing a role of feeding.

[0036] The collecting unit comprises a flue gas collecting unit and a carbonized material collecting tank 41. The flue gas collecting unit comprises multiple-stage condensing collecting sub-units connected in sequence, and the inlet is connected to the top of the pyrolysis furnace 20 through a pipeline. The carbonized material collecting tank 41 is connected to the carbonized material outlet of the pyrolysis furnace 20 through a pipeline via the cooling unit. The multiple-stage condensing collecting sub-units of the flue gas collecting unit comprise a heavy tar condensing tower 26, a light tar condensing tower 28, a vinegar liquid condensing tower 30, a filter tower 33 and a combustible gas collecting cabinet 34 connected in sequence. The sidewall of the heavy tar condensing tower 26 is provided with an inlet and connected to the top of the pyrolysis furnace 20 through a pipeline. The bottom of the heavy tar condensing tower 26 is provided with a heavy tar collecting tank 27, and the upper part is connected to the inlet of the light tar condensing tower 28 through a pipeline. The bottom of the light tar condensing tower 28 is provided with a light tar collecting tank 29, and the top is connected to the spray head 31 at the top of the vinegar liquid condensing tower 30 through a pipeline. The bottom of the vinegar liquid condensing tower 30 is provided with a vinegar liquid collecting tank 32, and the upper part of the vinegar liquid condensing tower 30 is connected to the filter tower 33 through a pipeline. The outlet of the filter tower 33 is connected to the combustible gas collecting cabinet 34.

[0037] The cooling unit is arranged between the pyrolysis unit and the carbonized material collecting unit, and comprises a water vapor collecting head 19, a condenser 38, a water tank 37, a water pump 36, a water cooling box 35 with a sandwich outer wall and an air cooling box 39 with a sandwich outer wall, the water vapor collecting head 19 is arranged at the top of the oven 16 and connected to the condenser 38 through a pipeline, the outlet of the condenser 38 is connected to the water tank 37, the water tank 37 is connected to the sandwich outer wall of the water cooling box 35 through the water pump 36 to cool the water cooling box 35, the sandwich outer wall of the water cooling box 35 is also provided with a water outlet connected to the condenser 38 through a pipeline, the inlet of the water cooling box 35 is connected to the outlet of the pyrolysis unit, the outlet of the water cooling box 35 is connected to the inlet of the air cooling box 39, the sandwich outer wall inlet of the air cooling box 39 is connected to the air blower 40, and the outlet of the air cooling box 39 is connected to the carbonized material collecting tank 41. Meanwhile, conveying belts for transporting materials are arranged in the water cooling box 35 and the air cooling box 39.

[0038] The electrical components mentioned herein are all connected to an external main controller and a standard 220V power supply, and the main controller can be any conventional and widely known control device, such as a computer.

[0039] In use, the pyrolysis furnace 20 is first preheated, and the crusher 2, the screw motor 4 and the screw conveyor 7 are started. The straw is crushed by the crusher 2, cut by the screw blade 3 and then conveyed to the blender 8 by the screw conveyor 7. The screw mixing shaft body 10 in the blender 8 is slowly stirred, and the material inlet 12 is opened to input the organic matter, and the pyrolysis raw material ratio is adjusted and controlled by the water supplement nozzle 13. After the materials are blended, the materials enter the oven through the slide-type feeder 14, and the conveying belt 17, the water vapor collecting head 19 and the heating pipe 18 are started to dry and preheat the straw particles. After the drying and preheating are completed, the straw particles are sent to the pyrolysis furnace 20, the pyrolysis motor 21 is started to slowly stir and heat by the electromagnetic heating coil to realize pyrolysis. After the pyrolysis and carbonization are completed, the biochar is conveyed to the water cooling box 35 and the air cooling box 39 to cool the biochar, other substances are conveyed to the heavy tar condensation tower 26 to separate and purify the heavy tar, the remaining substances are conveyed to the light tar condensation tower 28 to separate and purify the light tar, the remaining substances are conveyed to the vinegar condensation tower 30 to separate and purify the vinegar, and finally the useless substances are filtered through the filter tower 33 and sent to the combustible gas collecting cabinet for storage of the combustible gas.

[0040] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0041] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for pyrolysis and carbonization of straw and energy recycling, characterized in that, It comprises a crushing unit (1), a mixing unit, a drying unit, a pyrolysis unit, a collecting unit and a cooling unit. The crushing unit (1) comprises two-stage crushing subunits, a filter screen (5), a discharge port (6) and a conveyor, the top of the two-stage crushing subunits is provided with a crushing inlet, the filter screen (5) is arranged at the bottom of the two-stage crushing subunits, and the discharge port (6) is arranged below the filter screen (5) and connected to the inlet of the conveyor; The mixing unit comprises a blender (8) and a conveying belt, the blender (8) comprises a hollow box body, the box body is provided with a mixing assembly, the top of the box body is respectively provided with a box body inlet connected to the conveyor and an organic matter inlet, and the bottom of the box body is provided with a box body outlet connected to the drying unit; The drying unit comprises a slide-type feeder (14), a funnel-type feeding port (15), an oven (16), at least two conveying belts (17) and a heating pipe (18), the slide-type feeder (14) is connected to the box body outlet of the mixing unit, the funnel-type feeding port (15) is arranged at the outlet of the slide-type feeder (14), the conveying belts (17) are arranged in the oven (16) from top to bottom and horizontally and uniformly, the running directions of the two conveying belts (17) adjacent to each other are opposite, the starting end of the lower conveying belt (17) exceeds the end of the upper conveying belt (17) in the vertical direction, so that an S-shaped conveying route from top to bottom is formed in the oven (16), and the starting end of the uppermost conveying belt (17) is arranged below the outlet of the funnel-type feeding port (15); and the heating pipe (18) is arranged on the side wall of the oven (16); The pyrolysis unit comprises a hollow pyrolysis furnace (20), a pyrolysis stirring shaft (25), a pyrolysis motor (21) and an electromagnetic heating coil (23), the pyrolysis stirring shaft (25) is arranged horizontally in the pyrolysis furnace (20), the pyrolysis motor (21) is arranged outside the pyrolysis furnace (20) and connected to and drives the pyrolysis stirring shaft (25) to rotate, and the electromagnetic heating coil (23) is arranged on the outer wall of the pyrolysis furnace (20) in a surrounding manner, and the pyrolysis furnace inlet (22) is connected to the outlet of the drying unit; The collecting unit comprises a flue gas collecting unit and a carbonized material collecting tank (41), the flue gas collecting unit comprises multiple-stage condensation collecting subunits connected in sequence, and the inlet is connected to the top of the pyrolysis furnace (20) through a pipeline; and the carbonized material collecting tank (41) is connected to the carbonized material outlet of the pyrolysis furnace (20) through a pipeline and a cooling unit. The cooling unit is arranged between the pyrolysis unit and the carbonized material collecting unit, and comprises a water vapor collecting head (19), a condenser (38), a water tank (37), a water pump (36), a water cooling box (35) with a sandwich outer wall, and an air cooling box (39) with a sandwich outer wall.

2. The device according to claim 1, characterized in that, The two-stage crushing sub-units of the crushing unit (1) comprise, from top to bottom, a rubbing crusher (2) and a spiral blade machine, the spiral blade machine comprises a hollow spiral box, a spiral motor (4), a spiral shaft and spiral blades (3), the spiral shaft is horizontally arranged in the spiral box, the spiral blades (3) are fixed on the spiral shaft, and the spiral motor (4) is arranged outside the spiral box and has a driving shaft extending into the spiral box and connected with the spiral shaft.

3. The device according to claim 1, characterized in that, The conveyor of the crushing unit (1) is a spiral conveyor (7), the height of the inlet of the spiral conveyor (7) is lower than that of the outlet, so that the material is conveyed from bottom to top.

4. The device according to claim 1, wherein, The mixing assembly of the blender (8) is a spiral mixing shaft body (10) provided with spiral blades (11) and a blending motor (9), the blending motor (9) is arranged outside the box body of the blender (8) and connected with and drives the spiral mixing shaft body (10) to rotate.

5. The device according to claim 1, wherein, At least one water supplementing nozzle (13) is further arranged on the top wall of the box body of the blender (8), and the water supplementing nozzle (13) is connected with an external water source to convey water into the box body of the blender (8).

6. The device according to claim 1, wherein, The pyrolysis unit is further provided with a temperature detector (24), and the temperature detector (24) is arranged at a middle position in the pyrolysis furnace (20) to collect temperature information in the pyrolysis furnace (20).

7. The device according to claim 1, wherein, The pyrolysis stirring shaft (25) of the pyrolysis unit is a shaft body provided with spiral blades, and the spiral blades push the material to move towards the outlet at the tail of the pyrolysis furnace (20) when rotating.

8. The device according to claim 1, wherein, The multistage condensation collecting subunit of the flue gas collecting unit comprises, in sequence, a heavy tar condensation tower (26), a light tar condensation tower (28), a vinegar liquid condensation tower (30), a filter tower (33) and a combustible gas collecting cabinet (34); the sidewall of the heavy tar condensation tower (26) is provided with an inlet and is connected to the top of the pyrolysis furnace (20) through a pipeline; the bottom of the heavy tar condensation tower (26) is provided with a heavy tar collecting tank (27), and the upper portion is connected to the inlet of the light tar condensation tower (28) through a pipeline; the bottom of the light tar condensation tower (28) is provided with a light tar collecting tank (29), and the top is connected to a spray head (31) at the top of the vinegar liquid condensation tower (30) through a pipeline; the bottom of the vinegar liquid condensation tower (30) is provided with a vinegar liquid collecting tank (32), and the upper portion of the vinegar liquid condensation tower (30) is connected to the filter tower (33) through a pipeline; the outlet of the filter tower (33) is connected to the combustible gas collecting cabinet (34).

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