Dry distillation box with combined sealing structure

Abstract

The utility model discloses a dry distillation box with a combined sealing structure, which comprises a dry distillation box body formed by continuously splicing a feeding box body and a plurality of sections of module box bodies with the same cavity diameter and specification, a feeding port is arranged at the top of one module box body connected with the feeding box body, a feeding gate valve is arranged at the feeding port, and a discharging gate valve is arranged at the bottom of the module box body. A raw wood pushing device is arranged on a box plate at the front end of the feeding box body, a discharging port is formed in the tail portion of the module box body located at the tail end, a discharging gate valve is arranged at the discharging port, and gas guide pipe sets used for guiding and discharging cracking gas in the box to a combustion space outside the box are arranged on the top, the left side and the right side of the module box body. The adjacent connecting ends of the feeding box body and the module box bodies are detachably spliced through combined modules, and the splicing interface is provided with a high-temperature-resistant and high-pressure-resistant double-sealing structure. According to the dry distillation box disclosed by the utility model, the dry distillation and carbonization stroke can be greatly improved, so that the yield of dry distillation carbon products in one cycle is obviously improved, and the dry distillation and carbonization stroke can be flexibly adjusted according to the capacity requirement.

Description

Technical Field

[0001] This utility model relates to the technical field of log dry distillation boxes, specifically to a dry distillation box with a combined sealing structure. Background Technology

[0002] Logs are tree trunks cut into sections of a certain length according to standard or special specifications for size, shape, and quality. These sections are called logs and are carbonized into high-calorific-value charcoal through dry distillation and calcination. They have high combustion efficiency and produce fewer pollutants during combustion. Further carbonization processing can produce activated carbon, which is widely used in chemical, environmental protection, and pharmaceutical fields. Currently, log charcoal is mostly produced using earthen kilns. In these kilns, logs undergo incomplete combustion, and then the kiln is sealed for pyrolysis under air-isolated conditions, ultimately producing high-quality, amorphous charcoal that retains the original porous structure and residual tar within the pores. However, traditional earthen kilns suffer from low efficiency and high losses. While some existing mechanical carbonization equipment, such as the "biomass continuous carbonization furnace" proposed in application publication number CN 109609137 A, solves the problem of traditional earthen kilns not being able to perform continuous dry distillation, its dry distillation chamber has a short stroke, resulting in low charcoal production per cycle. Utility Model Content

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a dry distillation tank with a combined sealing structure.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned technical effects is:

[0005] A distillation tank with a combined sealing structure includes a main body consisting of a feed tank and multiple modular tanks of the same diameter and specifications, continuously spliced ​​together. A feed inlet is located at the top of one of the modular tanks connected to the feed tank, and a feed gate valve is provided at the feed inlet. A log pushing device is provided on the front panel of the feed tank. A discharge outlet is located at the tail end of one of the modular tanks, and a discharge gate valve is provided at the discharge outlet. Gas guide pipes for guiding and discharging the pyrolysis gas inside the tank to the combustion space outside the tank are provided on the top of the modular tank and on the left and right side walls near the top. The feed tank and the adjacent connecting ends of each modular tank are detachably combined modularly spliced, and the splicing interface has a high-temperature and high-pressure resistant double sealing structure composed of metal C-rings and graphite packing.

[0006] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, both the module box and the feed box are metal shells with a sandwich structure. The sandwich structure of the metal shell is provided with a high-temperature resistant lining made of ceramic fiber compressed blocks. The inner shell wall of the metal shell facing the dry distillation chamber is provided with a silicon carbide wear-resistant layer with a thickness of 1 to 3 mm.

[0007] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the metal shell is made of 253MA high-temperature resistant alloy steel, and the ceramic fiber compression block is 30cm thick.

[0008] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the metal shell has reinforcing ribs formed on the outer wall in the middle section between the module box and the feed box, and a sealing splicing frame is formed on the outer wall around the connecting end of the module box and the feed box. The sealing splicing frame extends radially and is integrally formed with the inner shell wall of the metal shell to form a splicing interface.

[0009] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the feed gate valve includes a gate slide fixed at the feed inlet and a gate slidably disposed on the gate slide for opening and closing the feed inlet, and the gate is connected to a servo drive device.

[0010] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the gate slide is provided with a docking seat on the side corresponding to the feed inlet, which is sealed and connected to the feed inlet. The inner side of the gate slide is formed with a sliding groove, the side of the gate is slidably disposed in the sliding groove, and the outer frame of the gate is connected to the servo drive device for transmission.

[0011] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the servo drive device includes a servo motor fixed to the outer end of the gate slide, a reduction bevel gearbox driven by the servo motor, and a lead screw driven by the reduction bevel gearbox. The outer frame of the gate has a lead screw through hole in the middle position for the lead screw to pass through. A lead screw nut that is threadedly connected to the lead screw is fixed on the lead screw through hole. The end of the lead screw is provided with an anti-loosening nut.

[0012] Preferably, in the above-mentioned dry distillation tank with a combined sealing structure, the gas guide pipe assembly includes a vertical gas guide pipe disposed on the top of each of the module boxes, and a horizontal gas guide pipe disposed on the left and right sides of each of the module boxes.

[0013] The beneficial effects of this utility model are as follows: The dry distillation box of this utility model is composed of a feeding box and multiple modular boxes with the same cavity diameter and specifications, which can greatly improve the dry distillation carbonization process and significantly increase the output of dry distilled carbon products in one cycle. The detachable combination splicing structure makes it convenient to flexibly adjust the dry distillation carbonization process of the box according to the production capacity needs. The high temperature and high pressure resistant double sealing structure increases the sealing of the box splicing interface, which is conducive to creating the oxygen-deficient conditions required for the pyrolysis of raw wood. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 This is a front view of one end of the feed box of this utility model;

[0018] Figure 5 This is a cross-sectional structural diagram of the module housing described in this utility model;

[0019] Figure 6 This is a schematic diagram of the feed gate valve of the present invention at the feed inlet;

[0020] Figure 7 This is a cross-sectional view of the module housing of this utility model at the sealed splicing frame;

[0021] Figure 8 This is a perspective view of the feed gate valve described in this utility model. Detailed Implementation

[0022] To provide a further understanding of this utility model, the following description, with reference to the accompanying drawings and specific embodiments, will further illustrate the utility model:

[0023] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Please see Figure 1 , Figure 2 and Figure 3 As shown in the figure, an embodiment of this utility model proposes a distillation tank with a combined sealing structure, which includes a distillation tank body 100 composed of a feed tank 120 and multiple modular tank bodies 110 of the same cavity diameter and specifications, continuously spliced ​​together. The feed tank 120 and the multiple distillation tank body 100 are continuously spliced ​​together to form a linear tank body, which has distillation chambers 113 of the same cavity diameter and specifications inside. Through the continuous splicing of the multiple distillation tank body 100, the internal distillation carbonization process of the distillation tank body 100 is made larger, so that the output of distilled carbon products in one cycle is significantly improved. Figure 1 and Figure 3 As shown, a feed inlet 130 is provided on the top of a module housing 110 connected to the feed housing 120. A feed gate valve 2 is provided at the feed inlet 130, and a log pushing device 4 is provided on the front panel of the feed housing 120. When feeding logs, the feed gate valve 2 is opened, allowing the logs to enter the housing through the open feed inlet 130. When it is necessary to push the logs towards the rear end of the housing, the feed gate valve 2 is closed, forming a seal at the feed inlet 130, so that the log pushing device 4 can stably push the logs in its pushing stroke forward.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, a discharge port 140 is located at the tail end of a module housing 110. A discharge gate valve 3 is installed at this discharge port 140. During the feeding of logs, the discharge gate valve 3 remains closed at the discharge port 140. When log calcination char needs to be discharged, the discharge gate valve 3 remains open at the discharge port 140 until all the log calcination char in the dry distillation chamber 113 has been discharged. When it is time to continue feeding for the next cycle, the discharge gate valve 3 returns to the closed state of the discharge port 140, and the feed gate valve 2 opens to begin feeding for the next cycle. Figure 1As shown, to improve the thermal energy utilization rate of the pyrolysis gas from the logs, the top of the module housing 110 and the left and right side walls near the top are equipped with gas guide pipe assemblies for guiding the pyrolysis gas inside the housing to the combustion space outside the housing. In a preferred embodiment of this utility model, the gas guide pipe assembly includes a vertical gas guide pipe 5 located at the top of each module housing 110 and a horizontal gas guide pipe 6 located on the left and right sides of each module housing 110. The pyrolysis gas generated during the high-temperature sealed calcination of the logs is released into the combustion space outside the pyrolysis tank body 100 through the vertical gas guide pipe 5 and the horizontal gas guide pipe 6, and burns on the outer periphery of the pyrolysis tank body 100, heating the pyrolysis tank body 100 and causing the logs inside the pyrolysis tank body 100 to be calcined at high temperature until carbonized, thereby improving the thermal energy utilization rate.

[0027] To facilitate assembly, maintenance, and disassembly, the adjacent connecting ends of the feed box 120 and each module box 110 are detachably modularly assembled. The splicing interface is equipped with a high-temperature and high-pressure resistant double-sealing structure consisting of a metal C-ring 7 and graphite packing 8. This detachable modular assembly structure allows for flexible adjustment of the dry distillation and carbonization process of the box according to production capacity requirements. The high-temperature and high-pressure resistant double-sealing structure increases the sealing performance of the box splicing interface, which is beneficial for creating the oxygen-deficient conditions required for the pyrolysis of logs.

[0028] Furthermore, in a preferred embodiment of this utility model, such as Figure 5 As shown, both the module housing 110 and the feed housing 120 are metal shells 111 with a sandwich structure. The sandwich structure of the metal shell 111 is provided with a high-temperature resistant lining 112 made of ceramic fiber compressed blocks. The inner shell wall of the metal shell 111 facing the dry distillation chamber 113 is provided with a silicon carbide wear-resistant layer with a thickness of 1 to 3 mm.

[0029] In a preferred embodiment of this utility model, the metal shell 111 is made of 253MA high-temperature resistant alloy steel, and the ceramic fiber compression block is 30cm thick. Specifically, as... Figure 5 As shown, in the middle section of the metal shell 111 located between the module housing 110 and the feeding box 120, reinforcing ribs 114 are formed on the outer shell wall. Around the periphery of the connecting end between the module housing 110 and the feeding box 120, a sealing splicing frame 115 is formed on the outer shell wall. The sealing splicing frame 115 extends radially and is integrally formed with the inner shell wall of the metal shell 111, forming a splicing interface 116. Wherein, as... Figure 7 As shown, a double sealing structure is set on the splicing interface 116, with the metal C-ring 7 located on the outer ring and the graphite packing 8 located on the inner ring.

[0030] Furthermore, in a preferred embodiment of this utility model, such as Figure 6As shown, the feed gate valve 2 includes a gate slide 21 fixed at the feed inlet 130, and a gate 22 slidably disposed on the gate slide 21 for opening and closing the feed inlet 130. The gate 22 is connected to a servo drive device, which drives the gate 22 to reciprocate on the gate slide 21 to control the opening and closing of the feed inlet 130. Specifically, as... Figure 8 As shown, the gate slide 21 has a mating seat 23 on one side corresponding to the feed inlet 130, which is sealed and connected to the feed inlet 130. The inner side of the gate slide 21 is formed with a sliding groove 24. The side of the gate 22 is slidably disposed in the sliding groove 24. The outer frame of the gate 22 is connected to the servo drive device. The servo drive device includes a servo motor 25 fixed to the outer end of the gate slide 21, a reduction bevel gearbox 26 connected to the servo motor 25, and a lead screw 27 connected to the reduction bevel gearbox 26. The outer frame of the gate 22 has a lead screw through hole in the middle for the lead screw 27 to pass through. A lead screw nut 28 threadedly connected to the lead screw 27 is fixed in the lead screw through hole. The end of the lead screw 27 is provided with an anti-loosening nut.

[0031] In embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the structure of the discharge gate valve 3 is the same as that of the feed gate valve 2, except for the installation position. The feed gate valve 2 is installed horizontally, while the discharge gate valve 3 is installed vertically. Both are controlled by electric switches to open and close the feed inlet and discharge outlet.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A distillation tank with a combined sealing structure, characterized in that, The dry distillation tank body (100) is composed of a feed box (120) and multiple modular boxes (110) with the same cavity diameter and specifications, which are continuously spliced ​​together. A feed inlet (130) is provided on the top of one of the modular boxes (110) connected to the feed box (120). A feed gate valve (2) is provided at the feed inlet (130). A log pushing device (4) is provided on the front box plate of the feed box (120). A discharge device is provided at the tail end of one of the modular boxes (110). The outlet (140) is provided with a discharge gate valve (3). The top of the module box (110) and the left and right sides near the top of the box are provided with a gas guide pipe group for guiding the pyrolysis gas in the box to the combustion space outside the box. The feed box (120) and the adjacent connection ends of each module box (110) are detachably combined modular splices. The splicing interface is provided with a high temperature and high pressure resistant double sealing structure composed of metal C-ring (7) and graphite packing (8).

2. The distillation tank with a combined sealing structure according to claim 1, characterized in that, Both the module housing (110) and the feed housing (120) are metal shells (111) with a sandwich structure. The sandwich structure of the metal shell (111) is provided with a high-temperature resistant lining (112) made of ceramic fiber compressed blocks. The metal shell (111) has a silicon carbide wear-resistant layer with a thickness of 1 to 3 mm on the inner shell wall facing the dry distillation chamber (113).

3. The distillation tank with a combined sealing structure according to claim 2, characterized in that, The metal shell (111) is made of 253MA high-temperature resistant alloy steel, and the ceramic fiber compression block is 30cm thick.

4. The distillation tank with a combined sealing structure according to claim 2, characterized in that, The metal shell (111) has reinforcing ribs (114) formed on the outer wall in the middle section between the module box (110) and the feeding box (120). The metal shell (111) has a sealing splicing frame (115) formed on the outer wall around the connecting end between the module box (110) and the feeding box (120). The sealing splicing frame (115) extends radially and is integrally formed with the inner shell wall of the metal shell (111) to form a splicing interface (116).

5. The distillation tank with a combined sealing structure according to claim 1, characterized in that, The feed gate valve (2) includes a gate slide (21) fixed at the feed inlet (130) and a gate (22) slidably disposed on the gate slide (21) for opening and closing the feed inlet (130). The gate (22) is connected to a servo drive device.

6. The distillation tank with a combined sealing structure according to claim 5, characterized in that, The gate slide (21) is provided with a docking seat (23) on one side corresponding to the feed inlet (130) and sealed to the feed inlet (130). The inner side of the gate slide (21) is formed with a sliding groove (24). The side of the gate (22) is slidably disposed in the sliding groove (24). The outer frame of the gate (22) is connected to the servo drive device for transmission.

7. The distillation tank with a combined sealing structure according to claim 6, characterized in that, The servo drive device includes a servo motor (25) fixed to the outer end of the gate slide (21), a reduction bevel gearbox (26) connected to the servo motor (25), and a lead screw (27) connected to the reduction bevel gearbox (26). The outer frame of the gate (22) has a lead screw through hole in the middle position for the lead screw (27) to pass through. A lead screw nut (28) that is threadedly connected to the lead screw (27) is fixed on the lead screw through hole. An anti-loosening nut is provided at the end of the lead screw (27).

8. The distillation tank with a combined sealing structure according to claim 1, characterized in that, The air duct assembly includes a vertical air duct (5) located at the top of each module housing (110) and a horizontal air duct (6) located on the left and right sides of each module housing (110).

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