Flexible coking unit reaction system

Abstract

The utility model belongs to the field of chemical technology, especially relates to a flexible coking device reaction system. Including coking line, steam line and dry gas line, steam line is linked with coking line, steam line is used for with steam is passed into to coking line. Dry gas line is linked with steam line, and dry gas line is used for with dry gas is passed into to steam line. Steam of hot coke line is replaced with dry gas, reduces the consumption of steam, reduces the subsequent water treatment load, increases the dry gas amount of absorption stable system, reduces the anti -fly dynamic of air compressor, reduces the air compressor degradation supplement flow, thereby reduces the air compressor load, reduces the use amount of medium pressure steam, thereby reduces the device energy consumption. Among them, the dry gas line can reduce 2t / h steam consumption after increasing, reduces the steam consumption. The dry gas line reduces the air compressor anti -fly dynamic about 2000Nm 3 / h after increasing, correspondingly reduces the steam consumption, thereby reduces the device energy consumption as a whole.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, and specifically relates to a flexible coking unit reaction system. Background Technology

[0002] Flexible coking is a coking technology that was gradually developed and optimized in the 1970s based on fluidized catalytic cracking and fluidized coking technologies.

[0003] However, the fluidized backflushing medium in the flexible coking unit reaction system is steam, resulting in a large subsequent water treatment load. Therefore, it is necessary to design a flexible coking unit reaction system to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a flexible coking unit reaction system to solve the issues raised in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible coking unit reaction system, comprising:

[0006] Coking line;

[0007] A steam line, which is connected to the coking line, is used to introduce steam into the coking line;

[0008] A dry gas line, which is connected to the steam line, is used to introduce dry gas into the steam line.

[0009] Furthermore, the flexible coking unit reaction system also includes:

[0010] A regulating valve, which is connected to the dry gas line.

[0011] Furthermore, the flexible coking unit reaction system also includes:

[0012] A dry gas desulfurization tower, which is connected to the dry gas line.

[0013] Furthermore, the flexible coking unit reaction system also includes:

[0014] A dry gas coalescer, which is connected to the dry gas line.

[0015] Furthermore, the dry gas coalescer includes:

[0016] A purification cylinder, wherein one side of the purification cylinder has an opening and the other side has an inlet and an outlet;

[0017] A rotating component, wherein the rotating component is disposed inside the purification cylinder and rotates relative to the purification cylinder;

[0018] The filter element is provided in two parts, both of which are disposed on the rotating assembly. One filter element is located on the opening side, and the other filter element is connected to the inlet and outlet.

[0019] Furthermore, the dry gas coalescer includes:

[0020] An installation door is provided at the opening;

[0021] Gear, the gear being connected to the rotating assembly;

[0022] The motor is connected to the gear transmission;

[0023] A rack for connecting to the mounting door, the rack extending in a front-rear direction and meshing with the gear.

[0024] Furthermore, the dry gas coalescer also includes:

[0025] A rotating shaft, which is connected to the rack and rotatably connected to the mounting door;

[0026] A torsion spring, which is disposed on the rotating shaft.

[0027] The technical effects and advantages of this utility model are as follows:

[0028] 1. Replacing hot coke steam with dry gas reduces steam consumption and lowers the load on subsequent water treatment.

[0029] 2. The dry gas volume of the absorption stabilization system was increased, the backflow of the air compressor was reduced, and the downgrade supplementary flow of the air compressor was reduced, thereby reducing the air compressor load and the amount of medium-pressure steam used, thus reducing the energy consumption of the unit.

[0030] 3. Adding a regulating valve to the dry gas line enables automatic control and allows for rapid switching in case of an accident, thus improving the safe operation capability of the unit.

[0031] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of the flexible coking apparatus reaction system according to an embodiment of the present invention is shown;

[0034] Figure 2 A schematic diagram of the dry gas coalescer according to an embodiment of the present invention is shown;

[0035] Figure 3 This diagram shows a structural schematic of the dry gas coalescer according to another embodiment of the present invention.

[0036] Figure 4 A schematic diagram of the internal structure of the dry gas coalescer according to an embodiment of the present invention is shown;

[0037] Figure 5 A schematic diagram of the structure of the rotating assembly according to an embodiment of the present invention is shown;

[0038] Figure 6 A schematic diagram of the internal structure of the dry gas coalescer according to an embodiment of the present invention is shown.

[0039] Attached reference numerals: 1. Coking line; 2. Steam line; 3. Dry gas line; 4. Regulating valve; 5. Dry gas desulfurization tower; 6. Dry gas coalescer; 7. Purification cylinder; 8. Rotating assembly; 9. Filter element; 11. Opening; 12. Inlet; 13. Outlet; 14. Base plate; 15. Baffle; 16. Installation door; 17. Gear; 18. Motor; 19. Rack; 20. Base; 21. Support cylinder; 22. Support ring; 23. Rotating shaft; 24. Torsion spring; 25. Elastic structure. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] like Figure 1As shown in the figure, a flexible coking unit reaction system according to an embodiment of the present invention includes a coking line 1, a steam line 2, and a dry gas line 3. The steam line 2 is connected to the coking line 1 and is used to introduce steam into the coking line 1. The dry gas line 3 is connected to the steam line 2 and is used to introduce dry gas into the steam line 2. The fluidization backflushing medium of the flexible coking unit reaction system is steam. Currently, based on the unit's operating conditions and combined with domestic catalytic cracking experience, the steam in the hot coking line is replaced with dry gas, reducing steam consumption and lowering the subsequent water treatment load; increasing the amount of dry gas in the absorption stabilization system reduces the backflush of the gas compressor and the downgrade supplementary flow of the gas compressor, thereby reducing the gas compressor load and the amount of medium-pressure steam used, thus reducing the unit's energy consumption. Specifically, the addition of the dry gas line 3 reduces steam consumption by 2 t / h. The addition of the dry gas line 3 reduces the backflush of the gas compressor by approximately 2000 Nm. 3 / h, which correspondingly reduces steam consumption, thereby reducing the overall energy consumption of the equipment.

[0042] Optionally, such as Figure 1 As shown, the flexible coking unit reaction system also includes a regulating valve 4, which is connected to the dry gas line 3. Adding the regulating valve 4 to the dry gas line 3 enables automatic control and allows for rapid switching in emergency situations, thus improving the safe operation capability of the unit.

[0043] Optionally, such as Figure 1 As shown, the flexible coking unit reaction system also includes a dry gas desulfurization tower 5 and a dry gas coalescer 6. The dry gas desulfurization tower 5 is connected to the dry gas line 3, and the dry gas coalescer 6 is also connected to the dry gas line 3. Dry gas from the absorption stabilization zone is first desulfurized by the dry gas desulfurization tower 5, then purified by the dry gas coalescer 6, and finally a pipeline is drawn from the unit's regulating point. This pipeline first passes through a flow meter FE1211, then through a regulating valve 4FV1211 to the boosting steam. A regulating valve 4 is added to the pipeline, merging with the root valve of the boosting steam inlet coke line. The steam regulating valve 4 is then disconnected, and the dry gas regulating valve 4 is put into operation.

[0044] Optionally, such as Figures 2 to 5As shown, to avoid interruption of dry gas delivery during filter element 9 replacement and ensure continuous coking process, the dry gas coalescer 6 includes a purification cylinder 7, a rotating assembly 8, and a filter element 9. The purification cylinder 7 has an opening 11 on its front side and an inlet 12 and an outlet 13 on its other side. The purification cylinder 7 is cylindrical with a cover at the top and an outlet 13 on the cover. The inlet 12 is located at the rear of the purification cylinder 7. The rotating assembly 8 is located inside the purification cylinder 7 and rotates relative to it. The rotating assembly 8 includes a base plate 14 and a baffle 15. The base plate 14 is disc-shaped and coaxial with the purification cylinder 7. The base plate 14 rotates around its own central axis. The baffle 15 is located at the upper middle part of the base plate 14. The baffle 15, the base plate 14, and the purification cylinder 7 together form two spaces, one corresponding to the opening 11 side and the other corresponding to the inlet 12 and outlet 13. Two filter elements 9 are provided, both mounted on the rotating assembly 8. Specifically, both filter elements 9 are placed on the base plate 14 and located on either side of the baffle 15, meaning they are situated in two separate spaces. One filter element 9 is located on the opening 11 side, while the other filter element 9 is connected to the inlet 12 and outlet 13. Therefore, when one filter element 9 needs cleaning, rotating the rotating assembly 8 rotates that filter element 9 to the opening 11 side, and rotating the other filter element 9 to the point where it connects to the inlet 12 and outlet 13. This ensures that the dry gas supply is not interrupted when replacing the filter element 9, preventing any impact on the coking process.

[0045] Optionally, such as Figures 2 to 6As shown, to facilitate the replacement of filter element 9, the dry gas coalescer 6 of the flexible coking unit reaction system includes a mounting door 16, a gear 17, a motor 18, and a rack 19. The mounting door 16 is located at the opening 11. The dry gas coalescer 6 also includes a base 20, on which a support cylinder 21 is mounted. The support cylinder 21 includes two symmetrical first arc-shaped structures. The purification cylinder 7 is located at the upper end of the support cylinder 21. The mounting door 16 is slidably connected to the upper end of the support cylinder 21 in the front-back direction. A support ring 22 is provided at the upper inner side of the support cylinder 21. The support ring 22 includes two symmetrical second arc-shaped structures, which are used to support the base plate 14. The gear 17 is connected to the rotating assembly 8. Specifically, the gear 17 is located at the lower end of the base plate 14 and connected to the middle of the base plate 14. The motor 18 is connected to the gear 17, and the motor 18 can be bolted to the upper middle part of the base 20. The rack 19 is used to connect to the mounting door 16, and the rack 19 extends in the front-back direction and meshes with the gear 17. Thus, starting the motor 18 drives the gear 17 to rotate, causing the rotating assembly 8 to rotate, which in turn drives the filter element 9 on the rotating assembly 8 to rotate, thereby swapping the positions of the two filter elements 9. Next, the gear 17 meshes with the rack 19, and the rotation of the gear 17 can drive the rack 19 to move. Since the rack 19 is connected to the mounting door 16, it can move the mounting door 16 away from the purification cylinder 7, opening the opening 11 to facilitate the removal of the filter element 9 that needs to be cleaned from the opening 11.

[0046] Optionally, such as Figure 2 , Figure 3 as well as Figure 6 As shown, to improve the convenience of cleaning and replacing the filter element 9, the dry gas coalescer 6 also includes a rotating shaft 23 and a torsion spring 24. The rotating shaft 23 is connected to the rack 19 and rotatably connected to the mounting door 16; the torsion spring 24 is disposed on the rotating shaft 23. Furthermore, the mounting door 16 and the purification cylinder 7 are connected by an elastic structure 25, such as an elastic band or spring. Thus, when the mounting door 16 is opened, the gear 17 drives the rack 19 to move, causing the mounting door 16 to open, wherein the elastic structure 25 between the mounting door 16 and the purification cylinder 7 is stretched. The filter element 9 can be removed from the opening 11 for cleaning. When the cleaned filter element 9 is placed back onto the bottom plate 14 from the opening 11, the front side of the rack 19 can be moved, causing the rack 19 and the rotating shaft 23 to rotate, wherein the torsion spring 24 is compressed. The rack 19 can temporarily disengage from the restraint of the gear 17, while the elastic structure 25 between the mounting door 16 and the purification cylinder 7 contracts, causing the mounting door 16 to reset until the mounting door 16 closes the opening 11. The torsion spring 24 can drive the rack 19 and the rotating shaft 23 to rotate, and the rack 19 resets and continues to mesh with the gear 17.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible coking unit reaction system, characterized in that, include: Coking line (1); Steam line (2), the steam line (2) is connected to the coking line (1), the steam line (2) is used to introduce steam into the coking line (1); Dry gas line (3), the dry gas line (3) is connected to the steam line (2), the dry gas line (3) is used to introduce dry gas into the steam line (2).

2. The flexible coking unit reaction system according to claim 1, characterized in that, Also includes: A regulating valve (4) is connected to the dry gas line (3).

3. The flexible coking unit reaction system according to claim 2, characterized in that, Also includes: Dry gas desulfurization tower (5) is connected to the dry gas line (3).

4. The flexible coking unit reaction system according to claim 1, characterized in that, Also includes: Dry gas coalescer (6) is connected to the dry gas line (3).

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