Slurry bed residual oil hydrogenation fractionation equipment
By installing a hydrogen distributor in the slurry bed residue hydrodistillation equipment, and using hydrogen nozzles to reduce the material temperature and purge the inner wall, the problem of slurry coking was solved, and long-term stable operation of the equipment was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-03-31
AI Technical Summary
Coking of the slurry in a slurry bed residue hydrodistillation unit can cause equipment blockage and affect the long-term operation of the unit.
A hydrogen distributor is installed inside the slurry fractionation tower. Hydrogen is sprayed into the center and inner wall of the slurry fractionation tower through hydrogen nozzles to reduce the material temperature, increase the contact area between hydrogen and slurry, purge the inner wall of the tower, and inhibit coking.
It effectively inhibits slurry coking, enables stable long-term operation of the slurry fractionation system, and avoids equipment blockage.
Smart Images
Figure CN224056697U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of petroleum chemical industry, specifically relates to a slurry bed residual oil hydrocracking equipment. BACKGROUND
[0002] The reaction product of the slurry bed hydrogenation device is slurry, which contains reacted and converted components and unconverted residual carbon, asphaltene and components above 550 DEG C. Because the composition of the reaction product of the slurry bed is complex, especially the heavy components contain gum, asphaltene, residual carbon and metal, under the condition of high temperature and lack of hydrogen, the heavy components condense and the condensed ring aromatics polymerize, which easily causes coking of the equipment (tower) internals and the tower bottom in the fractionation cutting process, and long-term accumulation leads to equipment blockage, thereby restricting long-period operation of the device. SUMMARY
[0003] The utility model discloses a slurry bed residual oil hydrocracking equipment, which can effectively inhibit coking of slurry in the slurry bed residual oil hydrocracking equipment.
[0004] The utility model discloses a slurry bed residual oil hydrocracking equipment, which can effectively inhibit coking of slurry in the slurry bed residual oil hydrocracking equipment.
[0005] A slurry bed residual oil hydrocracking equipment, comprising a slurry fractionation tower, a slurry feed pipe and a hydrogen injection pipe are arranged on the side of the slurry fractionation tower, the hydrogen injection pipe is located below the slurry feed pipe, a hydrogen distributor is arranged inside the slurry fractionation tower, and the hydrogen distributor is connected with the hydrogen injection pipe. The hydrogen is uniformly sprayed and uniformly contacts with the material and gradually rises, which can reduce the temperature of the material at the bottom of the slurry fractionation tower, relieve high-temperature dehydrogenation and polycondensation reaction, simultaneously purge the inner wall of the tower, inhibit coking of slurry in the slurry bed residual oil hydrocracking equipment, and realize stable and long-term operation of the slurry fractionation system.
[0006] Further, the hydrogen distributor comprises an annular pipe and a spray head, and the spray head is uniformly distributed on the annular pipe.
[0007] Further, the spray head comprises a first spray head for spraying hydrogen towards the central axis of the slurry fractionation tower and a second spray head for spraying hydrogen towards the inner wall of the slurry fractionation tower.
[0008] Further, the first spray head is inclined towards the central axis of the slurry fractionation tower from the annular pipe, and the inclination angle is 30-70 DEG.
[0009] Further, the first spray head is inclined towards the central axis of the slurry fractionation tower from the annular pipe, and the inclination angle is 60 DEG.
[0010] Further, the second spray head is inclined towards the inner wall of the slurry fractionation tower from the annular pipe, and the inclination angle is 30-70 DEG.
[0011] Further, the second annular pipe of the spray head is inclined to the direction of the inner wall of the slurry fractionating tower, and the inclination angle is 60°.
[0012] Further, a light component discharge port is arranged at the top of the slurry fractionating tower, and a heavy component discharge port is arranged at the bottom of the slurry fractionating tower.
[0013] Further, the hydrogen injection pipe is connected with a hydrogen pipe network.
[0014] Further, the spray head is a coking-preventing rotary spray head.
[0015] The technical effects of the present application are as follows:
[0016] Compared with the prior art, the slurry bed residual oil hydrogen fractionating equipment can reduce the material temperature at the bottom of the slurry fractionating tower by introducing hydrogen, relieve high-temperature dehydrogenation and polycondensation reaction, highly disperse hydrogen, increase the contact area between hydrogen and heavy components of the slurry, slow down the coking tendency, effectively reduce the oil gas partial pressure in the fractionating tower by introducing hydrogen, facilitate slurry separation, relieve the coking and wall-hanging problem of the inner wall of the slurry fractionating tower by purging the inner wall of the slurry fractionating tower with hydrogen, thus enabling the slurry separation to be carried out smoothly under hydrogen and low temperature and effectively preventing the equipment from coking, and ensuring long-period operation of the slurry bed slurry fractionating system. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The present application is a schematic diagram of the structure principle of the slurry bed residual oil hydrogen fractionating equipment.
[0018] Figure 2 The present application is a top view of the hydrogen distributor.
[0019] In the drawings, 1 is a slurry fractionating tower, 2 is a slurry feeding pipe, 3 is a hydrogen injection pipe, 4 is a hydrogen distributor, 5 is a light component discharge port, 6 is a heavy component discharge port, 401 is an annular pipe, 402 is a spray head, 4021 is a first spray head, and 4022 is a second spray head. DETAILED DESCRIPTION
[0020] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is described clearly and completely below with reference to the drawings.
[0021] Embodiment 1
[0022] As Figure 1As shown, the embodiment relates to a slurry bed residual oil hydrocracking device, which comprises a slurry fractionating tower 1, a light component discharge port 5 arranged at the top of the slurry fractionating tower 1, a heavy component discharge port 6 arranged at the bottom of the slurry fractionating tower 1, a slurry feed pipe 2 and a hydrogen injection pipe 3 arranged at the side of the slurry fractionating tower 1. One end of the hydrogen injection pipe 3 is connected with a hydrogen pipe network, and the other end penetrates through the side wall of the slurry fractionating tower 1 and extends into the slurry fractionating tower 1, and the hydrogen injection pipe 3 is arranged below the slurry feed pipe 2 and is connected with a hydrogen distributor 4 arranged in the slurry fractionating tower 1.
[0023] As shown in the figure, Figure 2 The hydrogen distributor 4 comprises a ring pipe 401 and a spray head 402. The spray head 402 is uniformly distributed on the ring pipe 401, and the anti-coking rotary spray head is adopted to effectively avoid the blockage of the spray head. Specifically, the spray head 402 comprises a spray head one 4021 for spraying gas to the center axis direction of the slurry fractionating tower 1 and a spray head two 4022 for spraying gas to the inner wall direction of the slurry fractionating tower 1. The spray head one 4021 is inclined to the center axis direction of the slurry fractionating tower 1 from the ring pipe 401, and the inclination angle is 60°; the spray head two 4022 is inclined to the inner wall direction of the slurry fractionating tower 1 from the ring pipe 401, and the inclination angle is 60°.
[0024] The hydrogen injection pipe 3 is arranged below the slurry feed pipe 2 of the slurry fractionating tower 1, the hydrogen is sprayed to the center axis direction of the slurry fractionating tower 1 and the tower wall at an angle of 60 degrees through the hydrogen spray head 402 on the hydrogen distributor 4, the tower feed enters from the upper part of the hydrogen distributor 4, and the heavy component is in full contact with the hydrogen; at the same time, the spray head 402 of the hydrogen distributor 4 is inclined to the inner wall of the tower, the hydrogen blowing of the inner wall of the tower is realized, the wall coking of the heavy component is avoided, and the light component at the top of the slurry fractionating tower 1 is discharged through the light component discharge port 5. The hydrogen is supplemented to realize high-temperature hydrogen separation, the coking is effectively inhibited, the slurry fractionating cutting and the long-period stable operation of the slurry fractionating tower device of the device can be realized.
[0025] The above specific embodiment is only a specific case of the utility model, and the patent protection range of the utility model includes but is not limited to the above specific embodiment. Any appropriate change or modification made by any ordinary technical personnel in the technical field to the utility model claim shall fall within the patent protection range of the utility model.
Claims
1. A slurry bed resid hydrofining fractionation apparatus characterized by, The slurry fractionating column is provided with a slurry feeding pipe and a hydrogen injection pipe on the side, the hydrogen injection pipe is below the slurry feeding pipe, and a hydrogen distributor is arranged inside the slurry fractionating column and connected with the hydrogen injection pipe.
2. The slurry bed resid hydrofining fractionation apparatus of claim 1, wherein, The hydrogen distributor comprises an annular pipe and nozzles, and the nozzles are uniformly distributed on the annular pipe.
3. The slurry bed resid hydrofining fractionation apparatus of claim 2, wherein, The nozzles comprise nozzles one spraying hydrogen towards the central axis of the slurry fractionating column and nozzles two spraying hydrogen towards the inner wall of the slurry fractionating column.
4. The slurry bed resid hydrofining fractionation apparatus of claim 3, wherein, The nozzles one are inclined towards the central axis of the slurry fractionating column from the annular pipe, and the inclination angle is 30-70°.
5. The slurry bed resid hydrofining fractionation apparatus of claim 4, wherein, The nozzles one are inclined towards the central axis of the slurry fractionating column from the annular pipe, and the inclination angle is 60°.
6. The slurry bed resid hydrofining fractionator of claim 3 wherein, The nozzles two are inclined towards the inner wall of the slurry fractionating column from the annular pipe, and the inclination angle is 30-70°.
7. The slurry bed resid hydrofining fractionation apparatus of claim 6, characterized in that, The nozzles two are inclined towards the inner wall of the slurry fractionating column from the annular pipe, and the inclination angle is 60°.
8. The slurry bed resid hydrofining fractionator of claim 1 wherein, The slurry fractionating column is provided with a light component discharging port at the top and a heavy component discharging port at the bottom.
9. The slurry bed resid hydrofining fractionator of claim 1 wherein, The hydrogen injection pipe is connected with a hydrogen pipe network.
10. The slurry bed residue hydrofining fractionation apparatus according to any one of claims 2-9, characterized in that, The nozzles are anti-coking rotary nozzles.