Separator of slurry bed hydrogenation device
By installing a cyclone separator, hydrogen purging pipe, and oil flushing pipe in the separator, the problems of poor separation effect and coking in the slurry bed hydrogenation unit were solved, achieving long-term stable operation and improved separation effect.
Patent Information
- Application Number
- CN202520062248.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-12
AI Technical Summary
In slurry bed hydrogenation units, the products after reaction conversion are prone to deposition and coking during the separation process, resulting in poor separation efficiency. The light components carry heavy components, causing blockage of the fractionation system pipelines and deposition of heavy components on the walls, affecting the stable operation of the unit.
A cyclone separator is installed in the separator, and equipped with a hydrogen purging pipe and a flushing oil pipe. The cyclone separator improves the separation effect of light and heavy components and prevents heavy components from adhering to the wall and depositing. The hydrogen purging and flushing oil pipes reduce the carrying of heavy components.
It effectively reduces the coking rate, improves the separation effect, ensures long-term stable operation of the unit, and prevents blockage of the fractionation system pipelines and deposition of heavy components.
Smart Images
Figure CN223866575U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petrochemical technology, specifically to a separator for a slurry bed hydrogenation device. Background Technology
[0002] Slurry-bed hydrotreating units are important alternatives to existing coking units, improving crude oil processing flexibility and light oil yield. However, slurry-bed hydrotreating units also have some problems. After the reaction and conversion, the products are further separated in the slurry fractionation system. During this separation process, as the heavy components become increasingly heavier after separation, they are prone to depositing and coking on the separator walls or internal components. This restricts the stable operation of the unit under long-term, high-load conditions, and the separator's separation efficiency deteriorates, leading to the light components carrying the heavy components, resulting in problems such as blockage of fractionation system pipelines, heavy component adhesion to tank or tower walls, and coking. How to solve the problems of deteriorated separator separation efficiency and coking has become the core issue for the stable operation of the unit. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and to propose a separator for a slurry bed hydrogenation device that greatly reduces the coking rate, extends the operating cycle of the device, and improves the separation effect.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A separator for a slurry bed hydrogenation unit includes a separator body and a cyclone separator disposed within the separator body. The cyclone separator is connected to the slurry bed reaction product feed pipe. A hydrogen purging pipe is provided on the side wall of the separator body for purging the inner wall of the separator body. A flushing oil pipe is provided on the side wall of the cyclone separator for flushing the inner wall of the cyclone separator. This reduces the carryover of light components entering the top of the separator and heavy components in the gas phase, preventing heavy components from adhering to the wall, depositing, and coking. The cyclone separator improves the separation effect of light and heavy components and effectively prevents the problem of deterioration in separation effect.
[0006] Furthermore, the hydrogen purge pipe is connected to the hydrogen pipeline network.
[0007] Furthermore, the flushing oil pipe is connected to the oil supply system.
[0008] Furthermore, the cyclone separator is provided with a discharge pipe at the top, which penetrates the separator body at the top and is used to discharge light component materials and gas phase. The bottom of the cyclone separator is open for discharging heavy component materials.
[0009] Furthermore, a discharge port is provided at the bottom of the separator body for discharging heavy component materials from the separator body.
[0010] The hydrogen purge pipe includes a purge main pipe, a purge annular pipe, and purge nozzles. One end of the purge main pipe is connected to the hydrogen pipeline network, and the other end passes through the separator body and is connected to the purge annular pipe. Purge nozzles are evenly distributed around the outer circumference of the purge annular pipe. Hydrogen is transported from the purge main pipe to the purge annular pipe and blown onto the inner wall of the separator body by the purge nozzles.
[0011] The flushing oil pipe includes a flushing main pipe, a flushing annular pipe, and flushing nozzles. One end of the flushing main pipe is connected to the oil supply system, and the other end passes through the separator body and the cyclone separator in sequence before connecting to the flushing annular pipe. Flushing nozzles are evenly distributed around the outer circumference of the flushing annular pipe. Flushing oil is transported from the flushing main pipe to the flushing annular pipe and sprayed out by the flushing nozzles to flush the inner wall of the cyclone separator.
[0012] Technical effects of this utility model:
[0013] Compared with the prior art, this utility model, by setting up cyclone separator internals in the separator, increases the cyclone separator wall flushing and separator wall hydrogen purging, reducing the carryover of light components entering the top of the separator and heavy components in the gas phase, greatly reducing the coking rate, and improving the separation effect of light and heavy components through cyclone separation, thereby improving the separation effect of the separator and achieving long-term stable operation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the separator structure of the slurry bed hydrogenation device according to Embodiment 1 of this utility model;
[0015] Figure 2 This is a schematic diagram of the separator structure of the slurry bed hydrogenation device according to Embodiment 2 of this utility model.
[0016] In the diagram, 1 is the separator body; 2 is the cyclone separator; 3 is the feed pipe; 4 is the hydrogen purging pipe; 5 is the flushing oil pipe; 6 is the discharge pipe; 7 is the discharge port; 401 is the purging main pipe; 402 is the purging annular pipe; 403 is the purging nozzle; 501 is the flushing main pipe; 502 is the flushing annular pipe; and 503 is the flushing nozzle. Detailed Implementation
[0017] 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.
[0018] Example 1:
[0019] like Figure 1 As shown, the separator of the slurry bed hydrogenation device involved in this embodiment includes a separator body 1, a hydrogen purge pipe 4, a flushing oil pipe 5, and a cyclone separator 2 disposed in the separator body 1.
[0020] The hydrogen purging pipe 4 is connected to the hydrogen pipeline network and penetrates the side wall of the separator body 1 to purge the inner wall of the separator body 1.
[0021] The cyclone separator 2 is connected to the slurry bed reaction product feed pipe 3, and the flushing oil pipe 5 is connected to the oil supply system. The flushing oil pipe 5 penetrates the side wall of the cyclone separator 2 and is used to flush the inner wall of the cyclone separator 2.
[0022] The cyclone separator 2 is provided with a discharge pipe 6 at the top, which penetrates the separator body 1 at the top and is used to discharge light component materials and gas phase. The bottom of the cyclone separator 2 is open and used to discharge heavy component materials. The bottom of the separator body 1 is provided with a discharge port 7 for discharging heavy component materials from the separator body 1.
[0023] In operation, the reaction products from the slurry bed reaction enter the separator body 1 and then first enter the cyclone separator 2. The cyclone separator 2 enhances the separation of light and heavy components. After separation, the light components and gas are discharged from the top of the cyclone separator 2, without any slurry carryover, while the heavy components fall completely to the bottom of the separator. The cyclone separator 2 wall flushing and separator body 1 wall hydrogen purging of this invention reduce the amount of light components entering the top of the separator and the carryover of heavy components in the gas phase. Forced cyclone separation ensures long-term operation of the device.
[0024] Example 2:
[0025] like Figure 1 As shown, the separator of the slurry bed hydrogenation device involved in this embodiment has a structure that is basically the same as that in Embodiment 1, except that:
[0026] The hydrogen purge pipe 4 includes a purge main pipe 401, a purge annular pipe 402, and purge nozzles 403. One end of the purge main pipe 401 is connected to the hydrogen pipeline network, and the other end passes through the separator body 1 and connects to the purge annular pipe 402. Purge nozzles 403 are evenly distributed around the outer periphery of the purge annular pipe 402. Hydrogen is transported from the purge main pipe 401 to the purge annular pipe 402 and blown onto the inner wall of the separator body 1 by the purge nozzles 403.
[0027] The flushing oil pipe 5 includes a flushing main pipe 501, a flushing annular pipe 502, and flushing nozzles 503. One end of the flushing main pipe 501 is connected to the oil supply system, and the other end passes through the separator body 1 and the cyclone separator 2 in sequence to connect to the flushing annular pipe 502. The flushing annular pipe 502 is evenly distributed with flushing nozzles 503. The flushing oil is transported from the flushing main pipe 501 to the flushing annular pipe 502 and sprayed out by the flushing nozzles 503 to flush the inner wall of the cyclone separator 2.
[0028] This embodiment can better treat the inner walls of the separator body 1 and the cyclone separator 2, greatly improving the treatment effect and solving the problems of pipeline blockage, heavy component adhesion to the wall, and coking in the fractionation system.
[0029] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of this utility model should fall within the patent protection scope of this utility model.
Claims
1. A separator for a slurry bed hydrogenation unit, characterized in that, The system includes a separator body and a cyclone separator disposed within the separator body. The cyclone separator is connected to the feed pipe of the slurry bed reaction product. A hydrogen purging pipe is provided on the side wall of the separator body for purging the inner wall of the separator body. A flushing oil pipe is provided on the side wall of the cyclone separator for flushing the inner wall of the cyclone separator.
2. The separator in the slurry bed hydrogenation unit according to claim 1, characterized in that, The hydrogen purging pipe is connected to the hydrogen pipeline network.
3. The separator in the slurry bed hydrogenation unit according to claim 1, characterized in that, The flushing oil pipe is connected to the oil supply system.
4. The separator in the slurry bed hydrogenation unit according to claim 1, characterized in that, The cyclone separator is provided with a discharge pipe at the top, and the top of the discharge pipe penetrates the separator body.
5. The separator in the slurry bed hydrogenation unit according to claim 1, characterized in that, The separator body is provided with a discharge port at the bottom.
6. The separator of the slurry bed hydrogenation unit according to any one of claims 1-5, characterized in that, The hydrogen purging pipe includes a purging main pipe, a purging annular pipe, and purging nozzles; one end of the purging main pipe is connected to the hydrogen pipeline network, and the other end passes through the separator body and is connected to the purging annular pipe; the purging annular pipe is evenly distributed with purging nozzles on its outer periphery.
7. The separator in the slurry bed hydrogenation unit according to claim 6, characterized in that, The flushing oil pipe includes a flushing main pipe, a flushing annular pipe, and flushing nozzles; one end of the flushing main pipe is connected to the oil supply system, and the other end passes through the separator body and the cyclone separator in sequence and is connected to the flushing annular pipe; the flushing annular pipe is evenly distributed with flushing nozzles on its outer periphery.