Biomass pyrolytic carbon discharging device

Abstract

The utility model relates to the technical field of environment-friendly treatment, and particularly provides a biomass pyrolytic carbon discharging device which comprises a biomass pyrolytic carbon spiral discharging machine connected with a discharging port of a pyrolyzer, a cooling and crushing device connected with the middle of biomass pyrolytic carbon in a sealing manner, and a fine material discharging machine connected with the lower part of the cooling and crushing device in a sealing manner, wherein the cooling and crushing device comprises a shell and a crushing device arranged in the shell, the crushing device comprises a rotating shaft, crushing teeth arranged on the rotating shaft and fixed teeth arranged on the shell, a gas cavity is formed in the center of the rotating shaft, exhaust holes are formed in the surface of the rotating shaft, and a water-cooled jacket is arranged on the outer side of the shell; according to the biomass pyrolytic carbon discharging device adopting the structure, the cooling and crushing device cools biomass pyrolytic carbon through the dual effects of cooling water and cooling gas, and meanwhile, the biomass pyrolytic carbon is crushed by utilizing the crushing teeth and the fixed teeth, so that the heat exchange area of the pyrolytic carbon is increased, and meanwhile, further discharging is also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection treatment, in particular to a biomass pyrolysis treatment technology, and specifically provides a biomass pyrolysis charcoal discharging device. Background Art

[0002] Biomass pyrolysis refers to the process of converting biomass into low-molecular substances such as charcoal, liquid and gas through thermochemical conversion under the condition of air isolation or supplying a small amount of air. Biomass pyrolysis technology can convert low-energy-density biomass that is difficult to handle by conventional methods into high-energy-density gas, liquid and solid products at a low cost and continuous production process, reducing the volume of biomass and facilitating storage and transportation. At the same time, high-value-added chemicals can be extracted from bio-oil. Biomass pyrolysis charcoal is made from biomass as raw material, so its production process does not emit harmful gases and pollutants, which is environmentally friendly; and the raw materials of biomass pyrolysis charcoal can be obtained through renewable planting and other methods. Compared with fossil energy such as coal, its resources are more sustainable.

[0003] Biomass pyrolytic charcoal will aggregate into blocks during the pyrolysis and transportation processes and have a large volume, which leads to problems in the transportation process of biomass pyrolytic charcoal. Some large blocks of pyrolytic charcoal will block the discharging mechanism. At the same time, the pyrolytic charcoal generally needs to be cooled during the discharging process, and the heat exchange area of ​​the pyrolytic charcoal that is aggregated into blocks is greatly reduced, resulting in poor cooling effect. Once the high-temperature pyrolytic charcoal comes into contact with the air, it will quickly oxidize, causing the quality of the pyrolytic charcoal to deteriorate and affecting its subsequent utilization. Therefore, how to solve the discharging and cooling difficulties caused by the aggregation of pyrolytic charcoal has become one of the urgent problems to be solved in current technology. Utility Model Content

[0004] Based on the many shortcomings of the prior art, the utility model provides a biomass pyrolytic charcoal discharging device, including a biomass pyrolytic charcoal spiral discharging machine connected to the pyrolyzer discharge port, a cooling and crushing device sealedly connected to the middle of the biomass pyrolytic charcoal, and a fine material discharging machine sealedly connected to the bottom of the cooling and crushing device, wherein the cooling and crushing device includes a shell and a crushing device arranged in the shell, the crushing device includes a rotating shaft and crushing teeth arranged on the rotating shaft and fixed teeth arranged on the shell, a gas cavity is arranged at the center of the rotating shaft, exhaust holes are arranged on the surface of the rotating shaft, and a water cooling jacket is arranged on the outer side of the shell; in the biomass pyrolytic charcoal discharging device with this structure, the cooling and crushing device cools the biomass pyrolytic charcoal through the dual effects of cooling water and cooling gas, and at the same time uses the crushing teeth and fixed teeth to crush the biomass pyrolytic charcoal, thereby increasing the heat exchange area of ​​the pyrolytic charcoal and facilitating further discharging.

[0005] The specific technical solution of the utility model is:

[0006] A biomass pyrolysis char discharging device, comprising a biomass pyrolysis char screw discharging machine connected to a pyrolyzer discharging port, a cooling and crushing device sealedly connected to the middle of the biomass pyrolysis char screw discharging machine, and a fine material discharging machine sealedly connected to the lower part of the cooling and crushing device, wherein the cooling and crushing device comprises a shell and a crushing device arranged in the shell, the crushing device comprises a rotating shaft and crushing teeth arranged on the rotating shaft and fixed teeth arranged on the inner surface of the shell, the center of the rotating shaft is provided with a gas cavity, the surface of the rotating shaft is provided with an exhaust hole, and the outer side of the shell is provided with a water cooling jacket;

[0007] The rotating shafts are two parallel shafts, and the crushing teeth on the two rotating shafts are staggered; the fixed teeth and all the crushing teeth are also staggered; this structure can utilize the crushing teeth to rotate and the fixed teeth to better crush the biomass pyrolysis charcoal, and can avoid the situation where the biomass pyrolysis charcoal is stuck on the crushing teeth. The above-mentioned rotating shafts are respectively connected to separate rotating motors, so that the rotation speed of the rotating shafts can be better controlled.

[0008] The biomass pyrolytic carbon discharging device adopts the above-mentioned structure. After the biomass pyrolytic carbon is discharged from the discharging port of the pyrolyzer, it is transported to the top of the cooling and crushing device through the biomass pyrolytic carbon spiral discharging machine, and then the biomass pyrolytic carbon falls into the shell of the cooling and crushing device. The rotating shaft in the cooling and crushing device rotates under the drive of the motor, thereby driving the crushing teeth to rotate. At this time, the staggered crushing teeth and fixed teeth will break the biomass pyrolytic carbon. The broken biomass pyrolytic carbon contacts with other crushing teeth to be further crushed, and falls through the gap between the crushing teeth and the fixed teeth; at the same time, the shell The water-cooling jacket on the outside of the body is passed through circulating cooling water, which can cool down the entire cooling and crushing device, and the gas cavity in the rotating shaft is passed through cooling gas, which is a low-temperature inert gas, such as low-temperature nitrogen or low-temperature helium, etc. The cooling gas is discharged from the exhaust hole set on the surface of the rotating shaft to directly cool the biomass pyrolytic carbon. Since this cooling method directly acts on the surface of the biomass pyrolytic carbon, it will cause the biomass pyrolytic carbon to become brittle, making it more convenient for the crushing teeth and fixed teeth to crush it, and the heat exchange area of ​​the pyrolytic carbon with a smaller particle size becomes larger, which is more conducive to heat exchange. In addition, the introduction of cooling gas realizes the inert protection of the device, avoiding the oxidation of pyrolytic carbon caused by the entry of air, and the continuous introduction of cooling gas accompanied by the rotation of the rotating shaft also plays the effect of purging the cooling and crushing device, avoiding the accumulation of powder formed during the crushing process in the device, and the crushed materials can be completely purged into the fine material discharging machine sealed and connected below the cooling and crushing device, and then the whole discharging process can be completed through the spiral discharging of the fine material discharging machine.

[0009] In order to achieve a better discharging effect, no spiral belt is set on the screw of the biomass pyrolytic charcoal spiral discharging machine above the cooling and crushing device; preferably, a spiral belt with a direction opposite to the front spiral belt can also be set on the tail screw of the biomass pyrolytic charcoal spiral discharging machine.

[0010] In addition to the two shafts preferably arranged in parallel as mentioned above, the pulverizing device may also adopt three shafts arranged in a herringbone shape. The inventor will not elaborate on this, but the solution of two shafts arranged in parallel as mentioned above is still preferred.

[0011] The gas chamber is closed on one side close to the rotating shaft and connected to the motor, and the other side passes through the rotating shaft and is connected to a pneumatic rotary joint for easy connection with an external gas source.

[0012] In order to further reduce the temperature, a water cooling jacket may also be provided on the outside of the fine material discharging machine.

[0013] Compared with the prior art, the present application uses a specially designed cooling and crushing device to cool the biomass pyrolytic carbon through the dual effects of cooling water and cooling gas, and uses crushing teeth and fixed teeth to crush the biomass pyrolytic carbon, thereby increasing the heat exchange area of ​​the pyrolytic carbon and facilitating further discharging, while also increasing the service life of the equipment, and can be widely used in the field of biomass pyrolysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the biomass pyrolysis charcoal discharging device;

[0015] Figure 2 is a schematic diagram of the top view of the cooling and crushing device;

[0016] Figure 3 It is a schematic diagram of the structure of the cooling and crushing device shaft and crushing teeth;

[0017] In the figure, 1 is a biomass pyrolysis charcoal spiral discharging machine, 2 is a cooling and crushing device, 3 is a fine material discharging machine, 4 is a motor, 5 is a shell, 6 is a water cooling jacket, 7 is a fixed tooth, 8 is a pneumatic rotary joint, 9 is a rotating shaft, 10 is a crushing tooth, 11 is an exhaust hole, and 12 is a gas chamber. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0019] like Figure 1 and 2 As shown, a biomass pyrolytic char discharging device comprises a biomass pyrolytic char screw discharging machine 1 connected to the discharging port of the pyrolyzer, a cooling and crushing device 2 sealedly connected to the middle of the biomass pyrolytic char screw discharging machine 1, and a fine material discharging machine 3 sealedly connected to the lower part of the cooling and crushing device 2;

[0020] The cooling pulverizing device 2 includes a shell 5 and a pulverizing device arranged in the shell 5, the pulverizing device includes a rotating shaft 9 and pulverizing teeth 10 arranged on the rotating shaft 9 and fixed teeth 7 arranged on the inner surface of the shell 5, a gas cavity 12 is arranged at the center of the rotating shaft 9, an exhaust hole 11 connected to the gas cavity 12 is arranged on the surface of the rotating shaft 9, and a water cooling jacket 6 is arranged on the outer side of the shell 5;

[0021] In this specific embodiment, the rotating shafts are two parallel shafts, and the crushing teeth on the two rotating shafts are staggered; the fixed teeth and all the crushing teeth are also staggered; the rotating shafts 9 are respectively connected to separate rotating motors 4.

[0022] The screw of the biomass pyrolysis charcoal spiral discharging machine above the cooling and crushing device 2 is not provided with a rotating belt;

[0023] Preferably, a spiral belt in the opposite direction to the front spiral belt can be arranged on the tail screw of the biomass pyrolysis charcoal spiral discharging machine.

[0024] The gas chamber 12 is closed at one side close to the rotating shaft and connected to the motor, and the other side passes through the rotating shaft and is connected to a pneumatic rotary joint 8 for convenient connection with an external gas source.

[0025] A water cooling jacket is also provided on the outside of the fine material discharging machine 3 .

[0026] The biomass pyrolytic carbon discharging device adopts the above-mentioned structure. After the biomass pyrolytic carbon is discharged from the discharging port of the pyrolyzer, it is transported to the top of the cooling and crushing device through the biomass pyrolytic carbon spiral discharging machine, and then the biomass pyrolytic carbon falls into the shell of the cooling and crushing device. The rotating shaft in the cooling and crushing device rotates under the drive of the motor, thereby driving the crushing teeth to rotate. At this time, the staggered crushing teeth and fixed teeth will break the biomass pyrolytic carbon. The broken biomass pyrolytic carbon contacts with other crushing teeth to be further crushed, and falls through the gap between the crushing teeth and the fixed teeth; at the same time, the shell The water-cooling jacket on the outside of the body is passed through circulating cooling water, which can cool down the entire cooling and crushing device, and the gas cavity in the rotating shaft is passed through cooling gas, which is a low-temperature inert gas, such as low-temperature nitrogen or low-temperature helium, etc. The cooling gas is discharged from the exhaust hole set on the surface of the rotating shaft to directly cool the biomass pyrolytic carbon. Since this cooling method directly acts on the surface of the biomass pyrolytic carbon, it will cause the biomass pyrolytic carbon to become brittle, making it more convenient for the crushing teeth and fixed teeth to crush it, and the heat exchange area of ​​the pyrolytic carbon with a smaller particle size becomes larger, which is more conducive to heat exchange. In addition, the introduction of cooling gas realizes the inert protection of the device, avoiding the oxidation of pyrolytic carbon caused by the entry of air, and the continuous introduction of cooling gas accompanied by the rotation of the rotating shaft also plays the effect of purging the cooling and crushing device, avoiding the accumulation of powder formed during the crushing process in the device, and the crushed materials can be completely purged into the fine material discharging machine sealed and connected below the cooling and crushing device, and then the whole discharging process can be completed through the spiral discharging of the fine material discharging machine.

[0027] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. 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 biomass pyrolysis carbon discharging device, characterized in that: It comprises a biomass pyrolysis char screw discharging machine (1) connected to the discharging port of the pyrolyzer, a cooling and crushing device (2) sealedly connected to the middle of the biomass pyrolysis char screw discharging machine (1), and a fine material discharging machine (3) sealedly connected to the bottom of the cooling and crushing device (2); The cooling pulverizing device (2) comprises a shell (5) and a pulverizing device arranged in the shell (5), the pulverizing device comprising a rotating shaft (9) and pulverizing teeth (10) arranged on the rotating shaft (9) and fixed teeth (7) arranged on the inner surface of the shell (5), a gas cavity (12) is arranged at the center of the rotating shaft (9), an exhaust hole (11) connected to the gas cavity (12) is arranged on the surface of the rotating shaft (9), and a water cooling jacket (6) is arranged on the outer side of the shell (5).

2. The biomass pyrolysis charcoal discharging device according to claim 1, characterized in that: The rotating shafts (9) are two parallel rotating shafts, and the crushing teeth (10) on the two rotating shafts are staggered.

3. The biomass pyrolysis charcoal discharging device according to claim 1 or 2, characterized in that: The fixed teeth (7) and all the crushing teeth (10) are arranged alternately.

4. The biomass pyrolysis charcoal discharging device according to claim 1 or 2, characterized in that: The gas chamber (12) is closed at one side close to the rotating shaft and connected to the motor, and the other side passes through the rotating shaft and is connected to a pneumatic rotary joint (8).

5. The biomass pyrolysis charcoal discharging device according to claim 2, characterized in that: The rotating shafts (9) are respectively connected to separate rotating motors (4).

6. The biomass pyrolysis charcoal discharging device according to claim 1, characterized in that: The biomass pyrolysis charcoal spiral discharging machine (1) above the cooling and crushing device (2) is not provided with a spiral belt on the screw.

7. The biomass pyrolysis charcoal discharging device according to claim 1, characterized in that: A water cooling jacket is arranged outside the fine material discharging machine (3).

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