Anti-clogging pyrolysis gas dewaxing tank

Abstract

The application relates to the technical field of pyrolysis gas wax removal tanks, in particular to a pyrolysis gas wax removal tank capable of preventing blockage, which comprises a tank body, a tank cover fixedly installed at the upper end of the tank body, a flow guide plate arranged on the inner side of the tank body, the flow guide plate being arranged in a spiral shape, a vertical cylinder fixedly installed on the inner ring of the flow guide plate and fixedly installed on the tank body, an auxiliary assembly composed of the spiral flow guide plate, uniformly-distributed through holes, a baffle and a fan, the auxiliary assembly optimizes the flow path and distribution state of the pyrolysis gas in the tank, prolongs the residence time of the pyrolysis gas in the tank, and simultaneously forms synergy between the cooling effect of the cooling cavity of the tank body and the flow guide structure, so that the wax and heavy oil drops in the pyrolysis gas are fully condensed and separated, the problems of uneven airflow and insufficient wax separation caused by the simple flow guide structure in the prior art are solved, the wax removal and purification effect is improved, and the impurity deposition risk of subsequent pipelines and equipment is reduced.

Description

Technical Field

[0001] This application relates to the technical field of pyrolysis gas dewaxing tanks, and in particular to an anti-clogging pyrolysis gas dewaxing tank. Background Technology

[0002] Pyrolysis gas, as a clean energy source, is widely used in industrial production and energy supply. However, the generation of pyrolysis gas is accompanied by impurities such as wax, heavy oil droplets, and solid particles. If these impurities are not removed in time, they will adhere and deposit on the inner walls of the conveying pipelines and subsequent processing equipment, leading to pipeline blockage, reduced equipment operating efficiency, and even safety hazards. Therefore, dewaxing and purification is a key step in the utilization of pyrolysis gas.

[0003] Existing technologies have various types of dewaxing tank equipment. Their core principle is mostly to separate wax from pyrolysis gas through cooling and condensation, or to intercept wax and particulate matter through filter components. However, the flow guiding structure design is simple, mostly using straight plates or annular guide plates, which results in short residence time of pyrolysis gas in the tank and uneven airflow distribution. The wax cannot be fully condensed and separated, resulting in low dewaxing efficiency. The filter components lack an effective online cleaning mechanism, and the condensed wax easily adheres to the filter screen and forms a blockage, requiring frequent shutdowns for disassembly and cleaning, which seriously affects the stability of continuous operation. Utility Model Content

[0004] To address the issues of short residence time of pyrolysis gas in the tank, uneven airflow distribution, insufficient condensation and separation of wax, and low dewaxing efficiency, this application provides an anti-clogging pyrolysis gas dewaxing tank.

[0005] This application provides an anti-clogging pyrolysis gas dewaxing tank, which adopts the following technical solution: it includes a tank body, a tank cover is fixedly installed on the upper end of the tank body, a guide plate is provided on the inner side of the tank body, the guide plate is spirally shaped, a vertical cylinder is fixedly installed on the inner ring of the guide plate, the vertical cylinder is fixedly installed on the tank body, an auxiliary component is provided between the upper end of the guide plate and the tank body, a filter screen is installed on the inner side of the vertical cylinder, and a cleaning component is provided above the filter screen.

[0006] Optionally, the upper end of the tank is equipped with an oil and gas inlet and an oil and gas outlet, the oil and gas outlet is connected to the vertical cylinder, the lower end of the tank is equipped with a heavy oil tank interface, and the oil and gas inlet is set towards the spiral starting end of the guide plate.

[0007] Optionally, the auxiliary component includes a partition, the lower end of which is fixedly connected to the upper end of the guide plate, one side of which is fixedly connected to the outer ring of the vertical cylinder, and the partition is provided with air holes. A fixed cylinder is installed on the tank at the position corresponding to the air holes, and a fan is installed on the fixed cylinder.

[0008] Optionally, the guide plate is provided with a gap between itself and the inner wall of the tank, and the guide plate is provided with through holes, and there are multiple through holes, which are evenly distributed.

[0009] Optionally, the cleaning component includes an air jet disc, which is fixedly installed on the inner wall of the vertical cylinder. The air jet disc is connected to an external high-pressure air tank via a connecting pipe. The air jet nozzles of the air jet disc are oriented towards the filter screen and are evenly distributed along the circumference of the air jet disc.

[0010] Optionally, the tank body is provided with a cooling chamber, an inlet pipe is installed at the upper end of one side of the tank body and the inlet pipe is connected to the cooling chamber, and an outlet pipe is installed at the lower part of the other side of the tank body and the outlet pipe is connected to the cooling chamber. Both the inlet pipe and the outlet pipe are equipped with shut-off valves.

[0011] Optionally, a heating chamber is provided at the bottom of the tank, and a heating plate is installed inside the heating chamber. The heating plate is electrically connected to an external power source through a wire. The wire passes through the tank and the vertical cylinder and is sealed by a sealing sleeve. A partition chamber is provided between the heating chamber and the cooling chamber.

[0012] Optionally, a sealing gasket is provided between the can lid and the can body, and the sealing gasket is fitted into a sealing groove opened at the upper end of the can body; the can lid is detachably and fixedly connected to the can body by bolts evenly distributed around the circumference, and the bolts pass through the can lid and are threaded to the upper end of the can body.

[0013] In summary, this application includes the following beneficial technical effects: 1. This utility model optimizes the flow path and distribution of pyrolysis gas in the tank by using a spiral guide plate in conjunction with an auxiliary component consisting of evenly distributed through holes, baffles, and a fan. This extends the residence time of the pyrolysis gas in the tank. At the same time, the cooling effect of the tank cooling chamber works synergistically with the guide structure to fully condense and separate wax and heavy oil droplets in the pyrolysis gas. This solves the problems of uneven airflow and insufficient wax separation caused by the simple guide structure in the prior art, improves the dewaxing and purification effect, and reduces the risk of impurity deposition in subsequent pipelines and equipment.

[0014] 2. This utility model uses a cleaning component consisting of a jet disc and an external high-pressure air tank to uniformly sweep the filter screen in a circumferential direction, promptly removing attached wax and solid particles, preventing clogging of the filter component. Combined with the heating effect of the heating chamber at the bottom of the tank, it can promote the smooth discharge of condensed wax and heavy oil droplets through the heavy oil tank interface, eliminating the need for frequent shutdowns for disassembly and cleaning. This solves the problem of operational interruptions caused by the lack of an effective cleaning mechanism in existing filter components, ensuring the continuous and stable operation of the equipment. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the interior of the tank in an embodiment of this application; Figure 3 This is a schematic diagram of the vertical cylinder connection in an embodiment of this application; Figure 4 This is an embodiment of the present application. Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the tank in an embodiment of this application.

[0016] Reference numerals: 1. Tank body; 2. Tank cover; 3. Baffle plate; 4. Vertical cylinder; 5. Through hole; 6. Oil and gas inlet; 7. Heavy oil tank interface; 8. Oil and gas outlet; 9. Filter screen; 10. Jet disc; 11. Connecting pipe; 12. Cooling chamber; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Heating chamber; 16. Heating plate; 17. Separation chamber; 18. Fan; 19. Fixed cylinder; 20. Baffle plate. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0018] This application discloses an anti-clogging pyrolysis gas dewaxing tank. For example... Figure 1 , Figure 2 As shown, the device includes a tank body 1, a tank cover 2 fixedly installed on the upper end of the tank body 1, a PLC controller installed on the outside of the tank body 1, and a sealing gasket between the tank cover 2 and the tank body 1. The sealing gasket is made of fluorosilicone rubber and is fitted into a sealing groove opened at the upper end of the tank body 1. The tank cover 2 is detachably and fixedly connected to the tank body 1 by bolts evenly distributed around the circumference. The bolts are SVSS-M8 hexagon socket head cap bolts, which pass through the tank cover 2 and are threaded to the upper end of the tank body 1.

[0019] See Figure 3 , Figure 4 As shown, a cooling chamber 12 is provided on the tank body 1. An inlet pipe 13 is installed at the upper end of one side of the tank body 1, and the inlet pipe 13 is connected to the cooling chamber 12. An outlet pipe 14 is installed at the lower part of the other side of the tank body 1, and the outlet pipe 14 is connected to the cooling chamber 12. A temperature sensor is provided inside the cooling chamber 12. A shut-off valve is installed on both the inlet pipe 13 and the outlet pipe 14. A heating chamber 15 is provided at the bottom of the tank body 1. A heating plate 16 is installed inside the heating chamber 15. The heating plate 16 is electrically connected to an external power supply through a wire.

[0020] See Figure 2As shown, the wires pass through the tank 1 and the vertical cylinder 4 and are sealed by a sealing sleeve. The heating plate 16 operates at AC220V / 380V and is automatically adjusted by a temperature controller to prevent the solidification of condensate at the bottom. A partition chamber 17 is provided between the heating chamber 15 and the cooling chamber 12. The partition chamber 17 is filled with ceramic fiber board. An oil and gas inlet 6 and an oil and gas outlet 8 are installed at the upper end of the tank 1. The oil and gas outlet 8 is connected to the vertical cylinder 4. Pressure transmitters are installed on the oil and gas inlet 6 and the oil and gas outlet 8 pipelines respectively to monitor the pressure difference between the inlet and outlet in real time. When the pressure difference is ≥0.2MPa, an audible and visual alarm is triggered to indicate that there may be pipeline blockage.

[0021] See Figure 2 , Figure 4 As shown, a heavy oil tank interface 7 is installed at the lower end of the tank body 1, and the oil and gas inlet 6 is set towards the spiral starting end of the guide plate 3. A guide plate 3 is set on the inner side of the tank body 1, and a gap is set between the guide plate 3 and the inner wall of the tank body 1. The gap width between the guide plate 3 and the inner wall of the tank body 1 is 8-12mm, which ensures the settling channel of condensate and avoids short circuit of airflow. A through hole 5 is set on the guide plate 3. There are multiple through holes 5, which are evenly distributed. The guide plate 3 is set in a spiral shape.

[0022] See Figure 2 , Figure 3 As shown, the spiral guide plate 3 is made of carbon steel to enhance wear resistance. A vertical cylinder 4 is fixedly installed on the inner ring of the guide plate 3. The tank body 1, tank cover 2 and vertical cylinder 4 are made of 304 stainless steel, which has strong corrosion resistance and is suitable for sulfur-containing environments of pyrolysis gas. The vertical cylinder 4 is fixedly installed on the tank body 1. An auxiliary component is set between the upper end of the guide plate 3 and the tank body 1. The auxiliary component includes a baffle 20. The lower end of the baffle 20 is fixedly connected to the upper end of the guide plate 3. The guide plate 3 and the baffle 20 are made of 304 stainless steel, which is resistant to high temperature, easy to weld, and not easy to adhere wax. One side of the baffle 20 is fixedly connected to the outer ring of the vertical cylinder 4.

[0023] See Figure 2 , Figure 5 As shown, air holes are provided on the partition 20, and a fixed cylinder 19 is installed on the tank 1 at the corresponding position of the air holes. A fan 18 is installed on the fixed cylinder 19. The fan 18 is a centrifugal fan. The inner diameter of the fixed cylinder 19 matches the air outlet of the fan 18. The air outlet of the fan 18 is connected to the air hole of the partition 20 through the fixed cylinder 19. The opening direction of the air hole is consistent with the spiral tangent direction of the guide plate 3 to ensure that the auxiliary airflow is supplemented in the same direction along the spiral path of the guide plate 3, rather than interfering with the main airflow in the opposite direction. A filter screen 9 is installed on the inner side of the vertical cylinder 4. Differential pressure sensors are installed on both sides of the filter screen 9. The filter screen 9 is made of stainless steel sintered mesh and is installed by a flange detachable connection. A cleaning component is provided above the filter screen 9. The cleaning component includes an air jet disc 10.

[0024] See Figure 3As shown, the jet disc 10 is fixedly installed on the inner wall of the vertical cylinder 4. The jet disc 10 is connected to an external high-pressure gas tank through a connecting pipe 11. The jet disc 10 and the connecting pipe 11 are made of 304 stainless steel, which is resistant to high-pressure gas impact and corrosion. The jet nozzle of the jet disc 10 is set towards the filter screen 9, and the jet nozzles are evenly distributed around the circumference of the jet disc 10. Under normal working conditions, the jet disc 10 is purged every 30-60 minutes, and each purging time is 10-15 seconds. When the pressure difference exceeds 0.05MPa, emergency purging is automatically started.

[0025] The implementation principle of the anti-clogging pyrolysis gas dewaxing tank in this application embodiment is as follows: Pyrolysis gas enters the tank through the oil and gas inlet 6 and directly enters the spiral path of the guide plate 3. The spiral guide plate 3 extends the flow path of the pyrolysis gas. With the help of multiple through holes 5 evenly distributed on the guide plate 3, the airflow distribution is more uniform, and the residence time of the pyrolysis gas in the tank is extended. The fan 18 delivers air into the tank through the air holes on the fixed cylinder 19 and the partition plate 20. The fan 18 supplements the airflow to the wall side area of ​​the spiral path of the guide plate 3 through the air holes of the partition plate 20, ensuring that the pyrolysis gas flows along the spiral path. The through holes evenly opened on the guide plate 3 can realize the dual path distribution of the pyrolysis gas: "spiral main flow and through hole secondary flow". Meanwhile, coolant is introduced into the cooling chamber 12 of tank 1 through inlet pipe 13, and discharged from outlet pipe 14 after heating, continuously cooling the inside of the tank. When the pyrolysis gas flows under the guidance of guide plate 3, the wax and heavy oil droplets gradually condense due to the cooling effect. The condensed wax and heavy oil droplets settle downward through the gap between guide plate 3 and the inner wall of tank 1, as well as through hole 5 on guide plate 3. The heating plate 16 at the bottom of tank 1 is energized and heats up. The partition chamber 17 plays a role in heat insulation, preventing the condensate from adhering to the bottom and promoting the wax and heavy oil droplets to gather and be discharged through the heavy oil tank interface 7 at the lower end of tank 1. After initial separation, the pyrolysis gas continues to flow into the vertical cylinder 4, passing through the filter screen 9 on the inner side of the vertical cylinder 4, where it intercepts the remaining solid particles and incompletely solidified wax, achieving deep purification. The purified pyrolysis gas is discharged through the oil and gas outlet 8 connected to the vertical cylinder 4 and enters the subsequent stages. When impurities adhere to the filter screen 9, an external high-pressure gas tank supplies gas to the jet plate 10 through the connecting pipe 11. The jet plate 10 is fixedly installed on the inner wall of the vertical cylinder 4, with its circumferentially evenly distributed jet nozzles facing the filter screen 9, performing circumferential and uniform blowing on the filter screen 9 to promptly remove the attached wax and particles and avoid clogging.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pyrolysis gas dewaxing tank for preventing clogging, comprising a tank body (1), characterized in that: A can lid (2) is fixedly installed on the upper end of the tank (1). A guide plate (3) is provided on the inner side of the tank (1). The guide plate (3) is spiral. A vertical cylinder (4) is fixedly installed on the inner ring of the guide plate (3). The vertical cylinder (4) is fixedly installed on the tank (1). An auxiliary component is provided between the upper end of the guide plate (3) and the tank (1). A filter screen (9) is installed on the inner side of the vertical cylinder (4). A cleaning component is provided above the filter screen (9).

2. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: The upper end of the tank body (1) is equipped with an oil and gas inlet (6) and an oil and gas outlet (8). The oil and gas outlet (8) is connected to the vertical cylinder (4). The lower end of the tank body (1) is equipped with a heavy oil tank interface (7). The oil and gas inlet (6) is set towards the spiral starting end of the guide plate (3).

3. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: The auxiliary component includes a partition (20), the lower end of which is fixedly connected to the upper end of the guide plate (3), one side of which is fixedly connected to the outer ring of the vertical cylinder (4), and the partition (20) is provided with air holes. A fixed cylinder (19) is installed on the tank (1) at the position corresponding to the air holes, and a fan (18) is installed on the fixed cylinder (19).

4. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: The guide plate (3) has a gap with the inner wall of the tank (1), and the guide plate (3) has a through hole (5). There are multiple through holes (5), and the multiple through holes (5) are evenly distributed.

5. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: The cleaning component includes an air jet disc (10), which is fixedly installed on the inner wall of the vertical cylinder (4). The air jet disc (10) is connected to an external high-pressure air tank through a connecting pipe (11). The air jet nozzles of the air jet disc (10) are arranged facing the filter screen (9), and the air jet nozzles are evenly distributed around the circumference of the air jet disc (10).

6. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: A cooling chamber (12) is provided on the tank body (1). An inlet pipe (13) is installed on the upper end of one side of the tank body (1). The inlet pipe (13) is connected to the cooling chamber (12). An outlet pipe (14) is installed on the lower part of the other side of the tank body (1). The outlet pipe (14) is connected to the cooling chamber (12). Both the inlet pipe (13) and the outlet pipe (14) are equipped with shut-off valves.

7. The anti-clogging pyrolysis gas dewaxing tank according to claim 6, characterized in that: The bottom of the tank (1) is provided with a heating chamber (15), and a heating plate (16) is installed inside the heating chamber (15). The heating plate (16) is electrically connected to an external power source through a wire. The wire passes through the tank (1) and the vertical cylinder (4) and is sealed by a sealing sleeve. A partition chamber (17) is provided between the heating chamber (15) and the cooling chamber (12).

8. The anti-clogging pyrolysis gas dewaxing tank according to claim 1, characterized in that: A sealing gasket is provided between the can lid (2) and the can body (1), and the sealing gasket is fitted into the sealing groove opened at the upper end of the can body (1); the can lid (2) is detachably and fixedly connected to the can body (1) by bolts evenly distributed around the circumference, and the bolts pass through the can lid (2) and are threadedly connected to the upper end of the can body (1).

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