A condenser recombination device for removing heavy components from methane rectification

Abstract

The application relates to the technical field of methane rectification equipment, and discloses a heavy component removal device for a condenser for methane rectification. In the scheme, the heavy component removal device is installed at the bottom of the condenser, and a discharge pipe is installed at the bottom of the condenser, so that the heavy component in the condenser can be discharged from the discharge pipe, the temperature of the condenser is ensured to be constant, and qualified high-purity methane products can be produced.

Description

Technical Field

[0001] This application relates to the technical field of methane distillation equipment, and in particular to a condenser heavy component removal device for methane distillation. Background Technology

[0002] Methane is an important chemical raw material with broad application prospects. In industrial production, distillation columns are commonly used to purify methane. Distillation columns utilize vapor pressure to transfer substances between gas and liquid, thus purifying methane. Modern methane distillation columns include condensers. The refrigerant passes through the tubes of the condenser, and the gaseous material exiting the top of the column enters the condenser, where it is condensed into a liquid state. Part of the liquid methane is refluxed to the top of the column for further distillation, while the remaining liquid methane is discharged and used in subsequent processes.

[0003] However, in actual operation, some unvaporized propane and other heavy components remain at the bottom of the condenser. As raw materials continuously enter the condenser, the accumulated heavy components eventually reach a certain level, causing the condenser temperature to rise, which in turn leads to a rise in the column temperature. This ultimately deteriorates the distillation operation conditions, affecting the quality of the produced product. Therefore, it is necessary to design a heavy component removal device for methane distillation condensers to solve the above problems. Utility Model Content

[0004] In order to facilitate the discharge of heavy components such as propane from the bottom of the condenser and reduce their impact on the distillation effect, this application provides a heavy component removal device for condensers used in methane distillation.

[0005] The technical solution adopted in this application is as follows:

[0006] A condenser heavy component removal device for methane distillation includes a condenser body, a connecting pipe at the bottom of the condenser body, and a discharge pipe detachably connected to the connecting pipe, with a regulating valve on the discharge pipe; a locking element is provided between the connecting pipe and the discharge pipe, and the discharge pipe is detachably connected to the connecting pipe through the locking element.

[0007] By adopting the above technical solution, and by installing a discharge pipe at the bottom of the condenser with a regulating valve, the heavy components at the bottom of the condenser can be discharged periodically, thereby reducing the impact of these heavy components on the internal temperature of the condenser and improving the quality of methane distillation products.

[0008] Optionally, one end of the discharge pipe is provided with an annular protrusion, and the locking member includes a locking cylinder slidably disposed on the outer wall of the discharge pipe. The locking cylinder can be threadedly connected to the outer wall of the connecting pipe, and the inner end face of the locking cylinder can abut against the annular protrusion, so that the connecting pipe abuts against the surface of the annular protrusion.

[0009] By adopting the above technical solution, the locking cylinder is threaded onto the connecting pipe, thereby making the connecting pipe press against the annular protrusion and connecting the connecting pipe and the discharge pipe together.

[0010] Optionally, the connecting pipe is provided with a reinforcing member, which is used to restrict the locking cylinder from rotating in the reverse direction after the locking cylinder is connected to the connecting pipe.

[0011] By adopting the above technical solution, the stability of the connection between the discharge pipe and the connecting pipe is improved.

[0012] Optionally, the reinforcing component includes a sliding ring slidably disposed on the outer wall of the connecting pipe and a threaded block threadedly connected to the outer wall of the connecting pipe. The threaded block is located on the side of the sliding ring away from the discharge pipe, and the sliding ring is rotatably connected to the threaded block. An abutment rod is provided on the sliding ring, and the abutment rod can abut against the end of the locking cylinder.

[0013] By adopting the above technical solution, the abutment rod is pressed against the locking cylinder, thereby restricting the rotation of the locking cylinder and thus maintaining the stability of the connection between the connecting pipe and the discharge pipe.

[0014] Optionally, the end of the locking cylinder is provided with an abutment block, the abutment block having an inclined surface, and the abutment rod being able to abut against the inclined surface to restrict the reverse rotation of the locking cylinder.

[0015] By adopting the above technical solution, the contact block is pressed against the inclined surface, thereby improving the positioning effect of the locking cylinder.

[0016] Optionally, the annular protrusion is provided with a protruding edge, the protruding edge is arranged in a ring shape along the circumference, and the end of the connecting pipe is provided with a slot for the protruding edge to be inserted.

[0017] By adopting the above technical solution, the connection stability of the connecting pipe and the discharge pipe can be further improved.

[0018] Optionally, the sidewall of the locking cylinder is provided with polygonal blocks.

[0019] By adopting the above technical solution, it is easier to use tools to rotate the locking cylinder, so that the locking cylinder can better connect the discharge pipe to the connecting pipe.

[0020] Optionally, multiple abutment rods are evenly arranged along the circumference of the sliding ring.

[0021] By adopting the above technical solution, the positioning effect of the locking cylinder is improved.

[0022] In summary, this application includes at least one of the following beneficial effects:

[0023] 1. In the scheme of this application, a heavy component removal device is installed at the bottom of the condenser, and a discharge pipe is installed at the bottom of the condenser, so that the heavy components in the condenser can be discharged from the discharge pipe, thereby ensuring the constant temperature of the condenser and ensuring the production of qualified high-purity methane products. Attached Figure Description

[0024] Figure 1 This is an application diagram illustrating an embodiment of this application;

[0025] Figure 2 This is a structural schematic diagram of an embodiment of this application;

[0026] Figure 3 This is an explosion diagram of the discharge pipe in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Condenser body; 2. Connecting pipe; 3. Discharge pipe; 4. Regulating valve; 5. Locking element; 51. Locking cylinder; 6. Ring protrusion; 7. Reinforcing element; 71. Sliding ring; 72. Threaded block; 8. Abutting rod; 9. Abutting block; 10. Inclined surface; 11. Protruding edge; 12. Polygonal block. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a condenser heavy component removal device for methane distillation, referring to... Figure 1 and Figure 2 The apparatus includes a condenser body 1 and a discharge pipe 3 connected to the lower end of the condenser body 1. A regulating valve 4, such as a ball valve or butterfly valve, is installed on the discharge pipe 3 to control its opening and closing. The apparatus described in this application is used in a methane distillation process. This process includes a heavy-weight removal tower and a light-weight removal tower connected in sequence, with the condenser body 1 installed at the top of both towers.

[0030] Liquid methane serves as a cold source, passing through the two condenser bodies 1 to liquefy the components entering the condensers. After exiting the condenser bodies 1, the liquid methane is in gaseous form and is then fed by a compressor into the bottom reboiler of the heavy removal tower, the bottom reboiler of the heavy removal tower, and the bottom reboiler of the light removal tower.

[0031] Gaseous methane undergoes rectification in the heavy components removal column. After rectification, the gaseous methane enters the condenser body 1 from the top outlet of the column and is liquefied. The liquefied methane then enters the bottom of the light components removal column from the condenser body 1 for secondary rectification to remove light components. Partially liquefied products flow back to the heavy components removal column through the top reflux outlet for further rectification. In the heavy components removal column, heavy components are discharged through the bottom outlet and can be vaporized by a vaporizer before being discharged into the tail gas pipeline.

[0032] In the light component removal tower, the light components are discharged from the top of the tower and, after passing through the condenser body 1 on the tower, are discharged as tail gas. Part of the condensed product re-enters the light component removal tower from the top reflux port for further distillation. The bottom of the light component removal tower contains high-purity methane product, which is discharged and collected.

[0033] In the condenser body 1 at the top of both the heavy and light component removal towers, the heavy components at the bottom can be discharged through the discharge pipe 3, ensuring a continuous discharge of heavy components from the condenser body 1 and maintaining a constant condenser temperature, thereby producing qualified high-purity methane. Furthermore, the discharge pipes 3 of both condensers are connected to the same vaporizer. The heavy components discharged from the condenser body 1 are vaporized by the vaporizer and then discharged into the exhaust gas pipeline. Alternatively, the two condenser bodies 1 can be connected to two separate vaporizers, each connected to an exhaust gas pipeline.

[0034] Reference Figure 2 and Figure 3 A connecting pipe 2 is installed at the bottom of the condenser body 1, and a discharge pipe 3 is connected to the connecting pipe 2. A locking element 5 is installed on the discharge pipe 3, and the discharge pipe 3 is connected to the connecting pipe 2 through the locking element 5. An annular protrusion 6 is fixed at the end of the discharge pipe 3. The locking element 5 includes a locking cylinder 51 that is slidably disposed on the outer wall of the discharge pipe 3, with the opening of the locking cylinder 51 facing the connecting pipe 2. The locking cylinder 51 can be threaded to the outer wall of the connecting pipe 2, and the inner end face of the locking cylinder 51 can abut against the annular protrusion 6, thereby making the end of the connecting pipe 2 abut against the annular protrusion 6. The side wall of the locking cylinder 51 is provided with a hexagonal or octagonal block structure, which facilitates the rotation of the locking cylinder 51 using tools such as wrenches.

[0035] Furthermore, the annular protrusion 6 is provided with a protruding edge 11, which is annular and coaxial with the annular protrusion 6. A slot is provided at the end of the connecting pipe 2. When the connecting pipe 2 abuts against the annular protrusion 6, the protruding edge 11 can be inserted into the slot, improving the stability of the connection between the connecting pipe 2 and the annular protrusion 6. A sealing layer of rubber or similar material is bonded to the surfaces of both the annular protrusion 6 and the protruding edge 11, thereby improving the sealing effect at the connection.

[0036] In a further embodiment, a reinforcing member 7 is installed on the connecting pipe 2. The reinforcing member 7 is used to position the locking cylinder 51 and restrict the reverse rotation of the locking cylinder 51. The reinforcing member 7 includes a sliding ring 71 slidably disposed on the outer wall of the connecting pipe 2 and a threaded block 72 threadedly connected to the outer wall of the connecting pipe 2. A guide block and guide groove structure is provided between the sliding ring 71 and the connecting pipe 2, so that the sliding ring 71 can only slide on the connecting pipe 2 and cannot rotate. The sliding ring 71 is rotatably connected to the threaded block 72 by bearings or the like. Therefore, when the threaded block 72 rotates, it can drive the sliding ring 71 to move. An abutment rod 8 is provided on the side of the sliding ring 71 near the locking cylinder 51, and multiple abutment rods 8 are evenly arranged along the circumference of the sliding ring 71. Rotating the threaded block 72 causes the abutment rod 8 to press against the end face of the locking cylinder 51, thereby positioning the locking cylinder 51.

[0037] Furthermore, a stop block 9 is fixed on the locking cylinder 51. The stop block 9 has a triangular block structure. The stop block 9 has an inclined surface 10, and the stop rod 8 can abut against the inclined surface 10, so that the locking cylinder 51 cannot rotate in the opposite direction under the blocking action of the stop rod 8.

[0038] 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 condenser for removing heavy components in methane distillation, characterized in that: The condenser includes a condenser body (1), a connecting pipe (2) is provided at the bottom of the condenser body (1), and a discharge pipe (3) is detachably connected to the connecting pipe (2), and a regulating valve (4) is provided on the discharge pipe (3); a locking member (5) is provided between the connecting pipe (2) and the discharge pipe (3), and the discharge pipe (3) is detachably connected to the connecting pipe (2) through the locking member (5).

2. The condenser heavy component removal device for methane distillation according to claim 1, characterized in that: One end of the discharge pipe (3) is provided with an annular protrusion (6). The locking member (5) includes a locking cylinder (51) that is slidably disposed on the outer wall of the discharge pipe (3). The locking cylinder (51) can be threadedly connected to the outer wall of the connecting pipe (2), and the inner end face of the locking cylinder (51) can abut against the annular protrusion (6) so that the connecting pipe (2) abuts against the surface of the annular protrusion (6).

3. The condenser heavy component removal device for methane distillation according to claim 2, characterized in that: The connecting pipe (2) is provided with a reinforcing member (7). When the locking cylinder (51) is connected to the connecting pipe (2), the reinforcing member (7) is used to restrict the locking cylinder (51) from rotating in the opposite direction.

4. A condenser for removing heavy components in methane distillation according to claim 3, characterized in that: The reinforcement component (7) includes a sliding ring (71) slidably disposed on the outer wall of the connecting pipe (2) and a threaded block (72) threadedly connected to the outer wall of the connecting pipe (2). The threaded block (72) is located on the side of the sliding ring (71) away from the discharge pipe (3), and the sliding ring (71) is rotatably connected to the threaded block (72). An abutment rod (8) is provided on the sliding ring (71), and the abutment rod (8) can abut against the end of the locking cylinder (51).

5. A condenser for removing heavy components in methane distillation according to claim 4, characterized in that: The locking cylinder (51) is provided with an abutment block (9) at its end. The abutment block (9) has an inclined surface (10). The abutment rod (8) can abut against the inclined surface (10) to limit the reverse rotation of the locking cylinder (51).

6. A condenser for removing heavy components in methane distillation according to claim 4, characterized in that: The annular protrusion (6) is provided with a protruding edge (11), which is arranged in a ring shape along the circumference. The end of the connecting pipe (2) is provided with a slot for inserting the protruding edge (11).

7. A condenser for removing heavy components in methane distillation according to claim 5, characterized in that: The side wall of the locking cylinder (51) is provided with polygonal blocks (12).

8. A condenser for removing heavy components in methane distillation according to claim 7, characterized in that: The abutment rods (8) are evenly arranged in multiple directions along the circumference of the sliding ring (71).

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