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Solid-containing heavy oil vacuum distillation apparatus and method

A technology of process method and process device, which is applied in the direction of hydrocarbon oil distillation control/regulation, hydrocarbon distillation, petroleum industry, etc., can solve the problems of shortening the service life of equipment, not pointing out the corrosion effect of furnace tubes, etc., and achieve the system operation cycle Long, low energy consumption level of the system, reducing the effect of wear and corrosion

Inactive Publication Date: 2019-01-11
胜帮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses the method of increasing the number of furnaces to improve the stability of device operation, but it does not solve the problem of shortening the service life of the equipment caused by the wear and tear of solid particles on the furnace and furnace tubes
[0007] Guo Wenhao and others published an article titled Research on the Causes of Vacuum Furnace Tube Corrosion in Atmospheric and Vacuum Distillation Units (Petroleum Refinery Engineering (2006), 36(4): 35-37), but this article only studied the furnace tubes before and after failure. Tubes were compared, and the solution given was only to change the corrosiveness of the fluid in the furnace tube, and did not point out how to reduce the corrosion effect of the fluid with high solid content on the furnace tube

Method used

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  • Solid-containing heavy oil vacuum distillation apparatus and method
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  • Solid-containing heavy oil vacuum distillation apparatus and method

Examples

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Embodiment 1

[0065] This embodiment provides a vacuum distillation process and a vacuum distillation process device containing solid heavy oil using the vacuum distillation process. The process device includes a reaction unit 1 and a vacuum flash tank 2 connected in sequence , decompression heating furnace 3, pressure control device 4, pre-flash device 7 and decompression tower 5;

[0066] The raw material inlet of the decompression flash tank 2 is connected with the reaction unit 1, the flash top gas outlet of the decompression flash tank 2 is directly connected with the decompression tower 5, and the bottom outlet of the decompression flash tank 2 is connected with the decompression heating furnace 3 connected.

[0067] The outlet of the decompression heating furnace 3 is connected with the inlet of the pre-flash device 7 through the pressure control device 4 .

[0068] The pre-flash device 7 is welded at the bottom of the decompression tower 5, the aspect ratio of the pre-flash device ...

Embodiment 2

[0079] This embodiment provides a vacuum distillation process and a vacuum distillation process device containing solid heavy oil using the vacuum distillation process. Described processing device is identical with embodiment 1 except.

[0080] The solid-containing atmospheric column bottom oil comes from the reaction unit 1 of the kerosene mixing process, and the solid-containing atmospheric column bottom oil contains 10wt% solid particles, and the average particle diameter of the solid particles is 60 μm. The particles are a combination of catalyst powder, powder coke and rust, and the active materials of the catalyst powder are Fe and Ni.

[0081] The reaction temperature of the reaction unit is 380° C., the reaction pressure of the reaction unit is 12 MPa, and the hydrogen-oil ratio of the reaction unit is 700.

[0082] The vacuum distillation process method using the described solid heavy oil vacuum process device comprises the steps:

[0083] (1) In the decompression fla...

Embodiment 3

[0087] This embodiment provides a vacuum distillation process and a vacuum distillation process device containing solid heavy oil using the vacuum distillation process. The process equipment is the same as in Example 1.

[0088] The solid-containing atmospheric column bottom oil comes from the reaction unit 1 of the heavy oil suspension bed hydrogenation process, and the solid-containing atmospheric column bottom oil contains 15wt% solid particles, and the average particle diameter of the solid particles is 40 μm, so The solid particles are a combination of catalyst powder and rust, and the active materials of the catalyst powder are Ni, Co and Mo.

[0089] The reaction temperature of the reaction unit is 420° C., the reaction pressure of the reaction unit is 16 MPa, and the hydrogen-oil ratio of the reaction unit is 900.

[0090] The vacuum distillation process method using the described solid heavy oil vacuum process device comprises the steps:

[0091] (1) In the decompre...

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Abstract

The invention relates to a solid-containing heavy oil vacuum distillation apparatus and method. The method comprises: (1) performing vacuum flashing treatment on bottom oil containing solids under atmospheric pressure to obtain flash top gas and flash bottom oil, and (2) directly feeding the flash top gas into a vacuum tower, heating the flash bottom oil and feeding the flash bottom oil into the vacuum tower. The apparatus and method guarantee the extraction rate of the vacuum distillation tower, reduce the wear and corrosion of the solid particles in the oil component to the vacuum furnace and the furnace tube, improve the operation cycle of the vacuum furnace and improve the economic benefits.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a vacuum distillation device, in particular to a vacuum distillation process device and method for heavy oil containing solids. Background technique [0002] Atmospheric and vacuum distillation is an important process in the chemical industry. The process is to divide the oil product into components of different distillation ranges by distillation to meet the requirements of the product and downstream equipment for the oil product. Due to the use of solid powder catalyst or supported catalyst in the suspension bed hydrogenation unit, a large amount of solids in the reaction product are brought into the atmospheric and vacuum fractionation unit. When the vacuum tower requires a large extraction rate, the gasification rate of the vacuum furnace If it is too high, the flow rate in the furnace tube will be too high, exceeding the allowable flow rate of the fluid in the furnace tube, and...

Claims

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Application Information

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IPC IPC(8): C10G7/00C10G7/12
CPCC10G7/00C10G7/12
Inventor 常伟先黄云周晓晓黄文博
Owner 胜帮科技股份有限公司
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