Tar residue pyrolysis gas condensing separation device

Abstract

The utility model relates to condensing equipment field, concretely relates to a tar residue pyrolysis gas condensing separation device, including a plurality of shell, the upper and lower both ends of shell are provided with the outlet pipe and the inlet pipe, the outlet pipe and the inlet pipe between adjacent shell adopt the connection of conveying pipe, the inside of shell is provided with the outlet box and the inlet box, the outlet box and the inlet box are connected with the outlet pipe and the inlet pipe respectively, a plurality of gas pipes are vertically arranged between the outlet box and the inlet box, the shell is filled with heat -conducting oil, the shell is provided with electric heating unit, the outlet pipe on the outside of shell is provided with first branch pipe, first branch pipe and outlet pipe all are provided with first valve, the inlet box is provided with the liquid collection pipe extending to the outside of shell, the liquid collection pipe is provided with second valve, the bracket is provided in the outlet box, a plurality of downward nozzles are arranged on the bracket. The utility model has the effect that the inside of condenser can be cleaned, and the good heat exchange performance of condenser can be maintained.

Description

Technical Field

[0001] This utility model relates to the field of condensation equipment, specifically to a condensation and separation device for pyrolysis gas of tar residue. Background Technology

[0002] The main components of pyrolysis gas from tar residue include the following types of compounds: hydrocarbons, aromatic hydrocarbons, saturated hydrocarbons, and heteroatom compounds. The specific composition of the pyrolysis gas from tar residue is affected by the following process conditions: pyrolysis temperature, heating rate, residence time, reactor type, and raw material pretreatment method. During the pyrolysis process, some solid residues will remain on the inner wall of the condenser. These solid residues on the inner wall of the condenser will affect the heat exchange in the subsequent condensation process. Therefore, it is necessary to design a pyrolysis gas condensation and separation device from tar residue that can clean the inside of the condenser and maintain good heat exchange performance of the condenser. Summary of the Invention

[0003] The purpose of this invention is to provide a pyrolysis gas condensation and separation device for tar residue, which has the function of cleaning the inside of the condenser and maintaining the good heat exchange performance of the condenser.

[0004] The technical solution adopted is as follows:

[0005] A pyrolysis gas condensation and separation device for tar residue includes multiple outer shells. Each outer shell has an outlet pipe and an inlet pipe at its upper and lower ends, respectively. The outlet pipes and inlet pipes of adjacent outer shells are connected by conveying pipes. An outlet box and an inlet box are located inside each outer shell, connected to the outlet pipe and inlet pipe, respectively. Multiple gas conveying pipes are vertically arranged between the outlet box and the inlet box. The outer shell is filled with heat-conducting oil and contains an electric heating unit. A first branch pipe is installed on the outlet pipe outside the outer shell. Both the first branch pipe and the outlet pipe are equipped with a first valve. The inlet box has a liquid collection pipe extending to the outside of the outer shell, equipped with a second valve. A support is installed inside the outlet box, with multiple downward-facing nozzles on the support. Each nozzle corresponds vertically to a gas conveying pipe. A water conveying pipe, connected to each nozzle and extending to the outside of the outer shell, is installed on the support. A high-pressure water supply unit, connected to each water conveying pipe, is located outside the outer shell.

[0006] Preferably, the outer shell is provided with a heat insulation layer, and the outer conveying pipe is provided with a heat insulation layer.

[0007] Preferably, a temperature sensor is disposed inside the housing.

[0008] Preferably, the housing is provided with a helical blade for rotation inside, and an electric motor is provided outside the housing. The electric motor is provided with a drive shaft that extends into the housing and is connected to the helical blade.

[0009] Preferably, the sides of the gas pipe are provided with multiple fins.

[0010] Preferably, the upper end of the air outlet box and the lower end of the air inlet box are both conical.

[0011] Compared to existing technologies, the advantages are:

[0012] After condensation is complete, close the first valve on the outlet pipe, open the first valve on the branch pipe, open the second valve on the liquid receiving pipe, start the high-pressure water supply unit, and use each nozzle to flush each gas pipe with high-pressure water. The flushing water is discharged from the liquid receiving pipe. After flushing, use the electric heating unit to heat the heat transfer oil to above 100°C, so that the water remaining in the inlet box, outlet box and gas pipe evaporates and is discharged from the branch pipe. Regularly flushing the gas pipe can maintain the good heat exchange performance of the condenser. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a pyrolysis gas condensation and separation device for tar residue according to this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of a pyrolysis gas condensation and separation device for tar residue according to this utility model.

[0015] In the diagram: 1. Outer shell; 2. Outlet pipe; 3. Inlet pipe; 4. Delivery pipe; 5. Air outlet box; 6. Air inlet box; 7. Air delivery pipe; 8. Fins; 9. Temperature sensor; 10. Spiral blades; 11. Motor; 12. First branch pipe; 13. First valve; 14. Liquid collection pipe; 15. Second valve; 16. Support; 17. Nozzle; 18. Water delivery pipe; 19. High-pressure water supply unit. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 2 As shown:

[0017] Example 1: A pyrolysis gas condensation and separation device for tar residue includes multiple outer shells 1. The upper and lower ends of the outer shell 1 are respectively provided with an outlet pipe 2 and an inlet pipe 3. The outlet pipe 2 and inlet pipe 3 between adjacent outer shells 1 are connected by a conveying pipe 4. An outlet box 5 and an inlet box 6 are provided inside the outer shell 1. The outlet box 5 and the inlet box 6 are respectively connected to the outlet pipe 2 and the inlet pipe 3. Multiple gas conveying pipes 7 are vertically arranged between the outlet box 5 and the inlet box 6. The outer shell 1 is filled with heat transfer oil. An electric heating unit is provided inside the outer shell 1. The electric heating unit heats the heat transfer oil in the outer shell 1, thereby exchanging heat with the gas conveying pipes 7.

[0018] The pyrolysis gas enters the inlet box 6 from the inlet pipe 3 and is then transported upwards to the outlet box 5 through each gas delivery pipe 7. During the movement within the gas delivery pipe 7, the temperature of the pyrolysis gas exchanges heat with the gas delivery pipe 7. During the heat exchange process, the pyrolysis gas is cooled and condensed. The heat transfer oil in the outer shell 1 at the front end has a higher temperature, which first separates the gas with a higher condensation temperature from the pyrolysis gas.

[0019] A first branch pipe 12 is provided on the outlet pipe 2 outside the outer shell 1. Both the first branch pipe 12 and the outlet pipe 2 are provided with a first valve 13. The air inlet box 6 is provided with a liquid collection pipe 14 extending to the outside of the outer shell 1. A second valve 15 is provided on the liquid collection pipe 14. The liquid separated from the pyrolysis gas flows down from the liquid collection pipe 14. The first valve 13 is opened to collect the condensed gas in the corresponding container.

[0020] A bracket 16 is provided inside the air outlet box 5. Multiple downward-facing nozzles 17 are provided on the bracket 16. Each nozzle 17 corresponds vertically to each air supply pipe 7. A water supply pipe 18 is provided on the bracket 16, which is connected to each nozzle 17 and extends to the outside of the outer casing 1. A high-pressure water supply unit 19 is provided on the outside of the outer casing 1, which is connected to each water supply pipe 18.

[0021] After condensation is complete, close the first valve 13 on the outlet pipe 2, open the first valve 13 on the branch pipe, open the second valve 15 on the liquid receiving pipe 14, start the high-pressure water supply unit 19, and use each nozzle 17 to perform high-pressure water flushing on each gas delivery pipe 7. The flushing water is discharged from the liquid receiving pipe 14. After flushing, use the electric heating unit to heat the heat transfer oil to above 100°C, so that the water remaining in the inlet box 6, outlet box 5 and gas delivery pipe 7 evaporates and is discharged from the branch pipe. Regularly flushing the gas delivery pipe 7 can maintain the good heat exchange performance of the condenser.

[0022] Example 2: A pyrolysis gas condensation and separation device for tar residue includes multiple outer shells 1. The upper and lower ends of the outer shells 1 are respectively provided with outlet pipes 2 and inlet pipes 3. The outlet pipes 2 and inlet pipes 3 between adjacent outer shells 1 are connected by conveying pipes 4. The outer shells 1 are provided with a heat insulation layer, and the conveying pipes 4 are also provided with a heat insulation layer. The outer shells 1 are provided with an outlet box 5 and an inlet box 6. The outlet box 5 and the inlet box 6 are respectively connected to the outlet pipes 2 and the inlet pipes 3. Multiple gas conveying pipes 7 are vertically arranged between the outlet box 5 and the inlet box 6. The upper end of the outlet box 5 and the lower end of the inlet box 6 are both conical. The outer shells 1 are filled with heat-conducting oil, and an electric heating unit is provided inside the outer shells 1.

[0023] The electric heating unit heats the heat-conducting oil inside the outer shell 1, thereby exchanging heat with the gas pipe 7. Multiple fins 8 are provided on the sides of the gas pipe 7. The fins 8 increase the heat exchange area and improve the heat exchange efficiency. A temperature sensor 9 is installed inside the outer shell 1 to monitor the temperature of the heat-conducting oil. A spiral blade 10 is rotatably installed inside the outer shell 1. An electric motor 11 is installed outside the outer shell 1. The electric motor 11 is provided with a drive shaft extending into the inner shell 1. The drive shaft is connected to the spiral blade 10. The rotating spiral blade 10 drives the heat-conducting oil inside the outer shell 1 to flow, so that the temperature of the heat-conducting oil is uniform.

[0024] The pyrolysis gas enters the inlet box 6 from the inlet pipe 3 and is then transported upwards to the outlet box 5 through each gas delivery pipe 7. During the movement within the gas delivery pipe 7, the temperature of the pyrolysis gas exchanges heat with the gas delivery pipe 7. During the heat exchange process, the pyrolysis gas is cooled and condensed. The heat transfer oil in the outer shell 1 at the front end has a higher temperature, which first separates the gas with a higher condensation temperature from the pyrolysis gas.

[0025] A first branch pipe 12 is provided on the outlet pipe 2 outside the outer shell 1. Both the first branch pipe 12 and the outlet pipe 2 are provided with a first valve 13. The air inlet box 6 is provided with a liquid collection pipe 14 extending to the outside of the outer shell 1. A second valve 15 is provided on the liquid collection pipe 14. The liquid separated from the pyrolysis gas flows down from the liquid collection pipe 14. The first valve 13 is opened to collect the condensed gas in the corresponding container.

[0026] A bracket 16 is provided inside the air outlet box 5. Multiple downward-facing nozzles 17 are provided on the bracket 16. Each nozzle 17 corresponds vertically to each air supply pipe 7. A water supply pipe 18 is provided on the bracket 16, which is connected to each nozzle 17 and extends to the outside of the outer casing 1. A high-pressure water supply unit 19 is provided on the outside of the outer casing 1, which is connected to each water supply pipe 18.

[0027] The working principle is as follows:

[0028] Pyrolysis gas enters the inlet box 6 from the inlet pipe 3 and is then transported upwards to the outlet box 5 through various gas delivery pipes 7. During its movement within the gas delivery pipes 7, the pyrolysis gas exchanges heat with the pipes, cooling and condensing into liquid. The condensed gas flows down the liquid collection pipe 14. The first valve 13 is opened to collect the condensed gas in the corresponding container. Uncondensed pyrolysis gas enters the next outer shell 1 through the delivery pipe 4. The temperature of the heat transfer oil inside the outer shell 1 decreases sequentially. When condensation is complete and flushing is required, the outlet is closed. Open the first valve 13 on pipe 2, open the first valve 13 on the branch pipe, open the second valve 15 on the liquid receiving pipe 14, start the high-pressure water supply unit 19, use each nozzle 17 to perform high-pressure water flushing on each gas delivery pipe 7, the flushing water is discharged from the liquid receiving pipe 14, after flushing, use the electric heating unit to heat the heat transfer oil to above 100°C, so that the water remaining in the air inlet box 6, air outlet box 5 and gas delivery pipe 7 evaporates and is discharged from the branch pipe. Regularly flushing the gas delivery pipe 7 can maintain the good heat exchange performance of the condenser.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A pyrolysis gas condensation and separation device for tar residue, characterized in that: It includes multiple outer shells (1), with outlet pipes (2) and inlet pipes (3) respectively provided at the upper and lower ends of the outer shells (1). The outlet pipes (2) and inlet pipes (3) between adjacent outer shells (1) are connected by conveying pipes (4). An air outlet box (5) and an air inlet box (6) are provided inside the outer shells (1). The air outlet box (5) and the air inlet box (6) are respectively connected to the outlet pipes (2) and the inlet pipes (3). Multiple air conveying pipes (7) are vertically arranged between the air outlet box (5) and the air inlet box (6). The outer shells (1) are filled with heat-conducting oil. An electric heating unit is provided inside the outer shells (1). A first branch pipe (12) is provided on the outlet pipe (2) outside the outer shells (1). Both the branch pipe (12) and the outlet pipe (2) are equipped with a first valve (13). The air inlet box (6) is equipped with a liquid collection pipe (14) extending to the outside of the outer shell (1). The liquid collection pipe (14) is equipped with a second valve (15). The air outlet box (5) is equipped with a bracket (16). The bracket (16) is equipped with multiple downward-facing nozzles (17). Each nozzle (17) corresponds vertically to each air supply pipe (7). The bracket (16) is equipped with a water supply pipe (18) that is connected to each nozzle (17) and extends to the outside of the outer shell (1). The outside of the outer shell (1) is equipped with a high-pressure water supply unit (19) that is connected to each water supply pipe (18).

2. The pyrolysis gas condensation and separation device for tar residue as described in claim 1, characterized in that: The outer shell (1) is provided with an insulation layer, and the outer conveying pipe (4) is provided with an insulation layer.

3. The pyrolysis gas condensation and separation device for tar residue as described in claim 1, characterized in that: A temperature sensor (9) is installed inside the outer casing (1).

4. The tar residue pyrolysis gas condensation and separation device as described in claim 1, characterized in that: The inner part of the outer shell (1) is provided with a helical blade (10) for rotation, and the outer part of the outer shell (1) is provided with a motor (11). The motor (11) is provided with a transmission shaft extending into the inner part of the outer shell (1), and the transmission shaft is connected to the helical blade (10).

5. The pyrolysis gas condensation and separation device for tar residue as described in claim 1, characterized in that: The gas pipe (7) is provided with multiple fins (8) on its side.

6. The pyrolysis gas condensation and separation device for tar residue as described in claim 1, characterized in that: The upper end of the air outlet box (5) and the lower end of the air inlet box (6) are both conical.

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