Experimental apparatus for atmospheric-vacuum distillation evaluation

Abstract

The invention discloses an experimental apparatus for atmospheric-vacuum distillation evaluation. A crude oil feed tank is communicated with an atmospheric electric heating furnace coil through a metering pump, an exit is led into an atmospheric flash separator along the rear-edge tangential direction of a temperature detector, a top exit pipe is connected with a glass condenser, a condenser exit is connected with a three-mouth collection bottle, and a bottom exit pipe is communicated with a vacuum electric heating furnace coil through an oil gathering tank and a high-temperature metering pump; an exit of the vacuum electric heating furnace coil is led into a vacuum flash separator along the rear-edge tangential direction of the temperature detector, the top exit pipe is connected with the glass condenser, the condenser exit is connected with a three-mouth collection bottle, the collection bottle is connected with a vacuum pump and a vacuum measuring instrument respectively, and a bottom exit pipe is communicated with a second-level vacuum electric heating furnace coil through an oil gathering tank and a high-temperature metering pump; and an exit of the heating furnace coil is led into a second-level vacuum flash separator along the rear-edge tangential direction of the temperature detector, the top exit pipe is the same as the vacuum flash separator, and the bottom exit pipe is led into a vacuum residual oil tank.

Description

[0001] 1. Technical field [0002] The invention provides an experimental device for evaluation of atmospheric and vacuum deep drawing, and relates to the field of petroleum refining. [0003] 2. Background technology [0004] Atmospheric and vacuum distillation units are the leading equipment in refineries and the basic equipment for deep processing, which directly affects the comprehensive benefits of the entire refinery. With the heavy and inferior quality of crude oil and the large-scale production of unconventional heavy and inferior oil such as shale oil, oil sand oil, heavy (thick) oil, super heavy oil, deep oil, asphalt, and coal tar in the future, it is difficult to directly As raw material for catalytic cracking of heavy oil. Improve the decompression extraction rate, strive to produce more catalytic cracking or hydrocracking raw materials, and reduce the yield of residual oil. It is the refining enterprise's overall plan to optimize the production of downstream coki...

AI Technical Summary

Problems solved by technology

However, the existing high-vacuum short-path distillation apparatus does not flash the mixed-phase feed, and the wax oil evaporated is seriously inconsistent with industrial production; the wax oil evaporated each time is diluted with light wax oil, and the error of the heavy metal content and residual carbon value in the analysis is relatively large. It has little guiding significance for production practice; in addition, it is not considered from the overall device system of atmospheric pressure and vacuum, and the atmospheric pressure part has a certain impact on the energy consumption and yield of deep drawing

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