Top cycle oil heat combination device for fractionating tower of coking device

Abstract

The utility model belongs to the technical field of circulating oil heat recycling, particularly relates to a coking unit fractionating tower top circulating oil heat combination device, and aims to solve the problems that an existing device does not fully utilize heat and cannot preheat petroleum by utilizing preheating, and energy consumption is increased. A fractionating tower is arranged at the top of the heating seat, a feeding port is formed in the top of the fractionating tower, and a plurality of fractionating ports are formed in the outer side of the fractionating tower; the filter cartridge is arranged on the outer side of the fractionating tower, a bent pipe used for conducting hot air is arranged between the filter cartridge and the fractionating tower, the right side of the filter cartridge is provided with an opening and is in threaded connection with a threaded cap, the inner side of the threaded cap is connected with a filter structure used for filtering the hot air, and the bottom side, located on the right side of the filter structure, of the filter cartridge is provided with a guide-out pipe. The waste heat recycling device is simple in structure, waste heat can be recycled, oil liquid is preheated through the waste heat, and energy consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating oil heat recycling, in particular to a circulating oil heat combined device at the top of a fractionating tower of a coking device. Background Art

[0002] In the petroleum refining system, the heat source of the deethanizer of the gas separation unit and the reboiler at the bottom of the propylene tower is provided by steam, resulting in a large energy consumption of the device. However, the heat source of the top circulating oil of the catalytic distillation tower is not fully utilized, and it needs to be cooled by circulating water before returning to the tower, resulting in a waste of heat source. Publication (Announcement) No.: CN202519210U A catalytic device fractionation tower top circulating oil heat combined device, characterized in that: the wax oil pipeline is connected to one end of the top circulating oil-wax oil heat exchanger through a first valve, a second valve and a third valve, and the two end pipes of the second valve are connected in series with a fourth valve and a residual oil-wax oil heat exchanger; the second end of the top circulating oil-wax oil heat exchanger is connected to the third end of the top circulating oil-wax oil heat exchanger through a fifth valve, a sixth valve, a deethanizer reboiler, a seventh valve, an eighth valve, a propylene tower reboiler, a ninth valve, a top circulating oil air cooler, a catalytic distillation tower and a tenth valve connected in series. The utility model uses the top circulating oil of the fractionation tower of the catalytic device as a heat source to provide heat source for the deethanizer of the gas separation device and the bottom reboiler of the propylene tower, so as to replace the original steam heat source, thereby reducing the steam consumption; and the heat originally provided by the top circulating oil for preheating the catalytic wax oil feed is now provided by the residual oil sent out of the atmospheric and vacuum device, thereby optimizing the heat exchange combination.

[0003] The existing device does not fully utilize the heat and cannot preheat the oil, thus increasing energy consumption. Utility Model Content

[0004] The utility model aims to solve the shortcomings of existing devices that the heat is not fully utilized, the oil cannot be preheated by preheating, and the energy consumption is increased, and a coking device fractionation tower top circulating oil heat combined device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The combined oil circulation heat unit for the top of the fractionating tower of the coking unit includes:

[0007] A heating seat, a fractionation tower is arranged on the top of the heating seat, a feed port is arranged on the top of the fractionation tower, and a plurality of fractionation ports are arranged on the outer side of the fractionation tower;

[0008] The filter cartridge is arranged outside the fractionation tower, a curved pipe for hot gas conduction is arranged between the filter cartridge and the fractionation tower, the right side of the filter cartridge is open and is threadedly connected with a threaded cap, the inner side of the threaded cap is connected with a filter structure for hot gas filtration, and a guide pipe is arranged on the bottom side of the filter cartridge, located on the right side of the filter structure;

[0009] The oil preheating box is arranged on the right side of the outlet pipe, the outer side of the outlet pipe is connected with a plurality of curved heating pipes, the plurality of curved heating pipes are all located in the oil preheating box, and the tail ends of the plurality of curved heating pipes are connected with the same outlet pipe.

[0010] Preferably, a liquid filling port is provided on the top of the oil preheating box.

[0011] Preferably, an oil discharge pipe is provided on the bottom side of the oil preheating box.

[0012] Preferably, the filtering structure includes a circular ring, a metal filter is arranged on the inner side of the circular ring, three branch rods are fixedly installed on the inner side of the circular ring, a straight rod is fixedly installed between the three branch rods, the straight rod is fixedly installed on the inner side of the threaded cap, and a sealing ring for sealing is sleeved on the outer side of the circular ring, and the sealing ring is slidably connected to the inner wall of the filter cylinder; the arranged metal filter can filter dust.

[0013] Preferably, a handle is fixedly mounted on the outer side of the threaded cap.

[0014] In the utility model, the beneficial effects of the coking unit fractionation tower top circulating oil heat combined device are as follows:

[0015] In this solution, heat is introduced into the interior of the filter cartridge through a curved pipe. The filter structure provided can filter the heat and play a role in removing impurities. The threaded cap is driven by a handle to rotate and separate from the filter cartridge. The threaded cap drives the filter structure to rotate through a straight rod. The filter structure can be disassembled and cleaned by pulling the handle.

[0016] In this solution, heat enters into a plurality of curved heating tubes through the outlet pipe and is then discharged through the outlet pipe. The plurality of curved heating tubes arranged in the oil preheating box can preheat the oil, and the preheating can be reused. The oil discharge pipe arranged can lead out the preheated oil for use;

[0017] The utility model has a simple structure and can reuse the waste heat. The waste heat is used to preheat the oil, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the oil circulation heat combined device at the top of the fractionation tower of the coking unit proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the filtering structure proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the curved heating tube proposed by the utility model.

[0021] In the figure: 1. heating seat; 2. distillation tower; 3. adding port; 4. distillation port; 5. elbow; 6. filter cartridge; 7. drain pipe; 8. filtering structure; 81. ring; 82. sealing ring; 83. branch rod; 9. straight rod; 10. threaded cap; 11. handle; 12. outlet pipe; 13. oil preheating box; 14. curved heating pipe; 15. oil discharge pipe; 16. liquid adding port; 17. air outlet pipe. DETAILED DESCRIPTION

[0022] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments. Embodiment 1

[0023] Combine the following Figure 1-Figure 3 The present application is further described in detail.

[0024] The combined oil circulation heat unit for the top of the fractionating tower of the coking unit includes:

[0025] A heating seat 1, a fractionation tower 2 is arranged on the top of the heating seat 1, a feed port 3 is arranged on the top of the fractionation tower 2, and a plurality of fractionation ports 4 are arranged on the outer side of the fractionation tower 2;

[0026] A filter cartridge 6 is arranged outside the fractionation tower 2, a curved pipe 5 for hot gas conduction is arranged between the filter cartridge 6 and the fractionation tower 2, the right side of the filter cartridge 6 is open and is threadedly connected with a threaded cap 10, a handle 11 is fixedly installed on the outside of the threaded cap 10, a filter structure 8 for hot gas filtration is connected to the inside of the threaded cap 10, and a guide pipe 12 is arranged on the bottom side of the filter cartridge 6, located on the right side of the filter structure 8;

[0027] The oil preheating box 13 is arranged on the right side of the outlet pipe 12. The outer side of the outlet pipe 12 is connected with a plurality of curved heating pipes 14. The plurality of curved heating pipes 14 are all located in the oil preheating box 13. The tail ends of the plurality of curved heating pipes 14 are connected with the same air outlet pipe 17.

[0028] In this embodiment, a liquid filling port 16 is provided on the top of the oil preheating box 13 .

[0029] In this embodiment, an oil discharge pipe 15 is provided at the bottom side of the oil preheating box 13 .

[0030] In this embodiment, the filtering structure 8 includes a circular ring 81, a metal filter screen 84 is arranged on the inner side of the circular ring 81, three branch rods 83 are fixedly installed on the inner side of the circular ring 81, a straight rod 9 is fixedly installed between the three branch rods 83, the straight rod 9 is fixedly installed on the inner side of the threaded cap 10, and a sealing ring 82 for sealing is sleeved on the outer side of the circular ring 81, and the sealing ring 82 is slidably connected to the inner wall of the filter cylinder 6; the arranged metal filter screen 84 can filter dust.

[0031] Working principle: when in use, the heat at the top of the distillation tower 2 is introduced into the interior of the filter tube 6 through the curved pipe 5. The filter structure 8 set up can filter the heat and play a role in removing impurities. The heat enters the multiple curved heating tubes 14 through the outlet pipe 12, and then is discharged through the outlet pipe 17. The multiple curved heating tubes 14 set in the oil preheating box 13 can preheat the oil, and the preheating can be reused. The set oil discharge pipe 15 can guide the preheated oil for use. The threaded cap 10 is driven by the handle 11 to rotate and separate from the filter tube 6. The threaded cap 10 drives the filter structure 8 to rotate through the straight rod 9. The filter structure 8 can be disassembled and cleaned by pulling the handle 11. Embodiment 2

[0032] The difference between Example 2 and Example 1 is that a drain pipe 7 for discharging dust is arranged on the bottom side of the filter cartridge 6, close to the left side of the filter structure 8; opening the drain pipe 7 can discharge the dust at the bottom of the filter cartridge 6. This application includes all structural shapes, sizes and materials of Example 1, which can be selected and adjusted to meet specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0033] The above is only a preferred specific implementation of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, which should be covered by the protection scope of this embodiment.

Claims

1. A combined oil circulation and heat device for the top of a coking unit fractionation tower, characterized in that: include: A heating seat (1), a fractionation tower (2) being arranged on the top of the heating seat (1), a feed port (3) being arranged on the top of the fractionation tower (2), and a plurality of fractionation ports (4) being arranged on the outer side of the fractionation tower (2); A filter cartridge (6) is arranged outside the fractionation tower (2); a bent pipe (5) for hot gas conduction is arranged between the filter cartridge (6) and the fractionation tower (2); the right side of the filter cartridge (6) is open and is threadedly connected to a threaded cap (10); the inner side of the threaded cap (10) is connected to a filter structure (8) for hot gas filtering; and a guide pipe (12) is arranged on the bottom side of the filter cartridge (6) and located on the right side of the filter structure (8); The oil preheating box (13) is arranged on the right side of the outlet pipe (12), the outer side of the outlet pipe (12) is connected to a plurality of curved heating pipes (14), the plurality of curved heating pipes (14) are all located in the oil preheating box (13), and the tail ends of the plurality of curved heating pipes (14) are connected to the same air outlet pipe (17).

2. The coking unit fractionation tower top oil circulation heat combined device according to claim 1, characterized in that: The filtering structure (8) comprises a circular ring (81), three branch rods (83) are fixedly mounted on the inner side of the circular ring (81), a same straight rod (9) is fixedly mounted between the three branch rods (83), and the straight rod (9) is fixedly mounted on the inner side of a threaded cap (10).

3. The coking unit fractionation tower top oil circulation heat combined device according to claim 2, characterized in that: The outer sides of the circular rings (81) are sleeved with sealing rings (82) for sealing, and the sealing rings (82) are slidably connected to the inner wall of the filter cartridge (6).

4. The coking unit fractionation tower top oil circulation heat combined device according to claim 1, characterized in that: A handle (11) is fixedly mounted on the outer side of the threaded cap (10).

5. The coking unit fractionation tower top oil circulation heat combined device according to claim 1, characterized in that: The top of the oil preheating box (13) is provided with a liquid filling port (16).

6. The coking unit fractionation tower top oil circulation heat combined device according to claim 1, characterized in that: An oil discharge pipe (15) is provided on the bottom side of the oil preheating box (13).

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