Testing device for simulating equipment corrosion of continuous distillation industrial device

Abstract

The invention relates to a testing device for simulating the equipment corrosion of a continuous distillation industrial device. The testing device comprises a continuous distillation system, a pressure control system and a corrosion sample system, wherein the top interface of a multi-mouth flask is connected with the bottom of a main reactor; the top interface of the main reactor is connected with the bottom of a main condenser; the top of the main condenser is connected with a non-condensable gas receiving tank, a cold trap, a gas buffering tank and an exhaust system through connecting pipes respectively, and is connected to a vacuum pump through the cold trap; and the corrosion sample system comprises a sample hanging device for placing samples into a steam phase and a liquid phase. A skillful reflow design is adopted in the invention, so that a condensed low-boiling-point liquid does not flow through the high-temperature main reactor, so that re-vaporization before reflowing to the bottom of the multi-mouth flask is avoided. Under the action of a reflow bypass, condensed low-boiling-point components and high-boiling-point components left at the bottom of the multi-mouth flask are fully mixed forcedly, and the distillation process is started once again, so that accurate simulation of continuous distillation is realized.

Description

Technical field [0001] The invention relates to an equipment corrosion test device that simulates a continuous distillation industrial device in a petroleum refining process. Background technique [0002] Atmospheric and vacuum distillation is the most important chemical separation process in the primary processing of petroleum refining. With the deterioration of crude oil worldwide, the main manifestation is the increase in acid content and the increase in the proportion of heavy crude oil. Heavy crude oil has high acid value, few light components, high density and viscosity, high colloidal asphaltene content, high salt content and heavy metal content, which is severely corroded to refinery equipment, especially primary crude oil processing equipment, such as atmospheric and vacuum distillation equipment It is directly affected by severe corrosion, and the industry does not have many methods for this. The most important reason is the lack of understanding of the characteristics...

AI Technical Summary

Problems solved by technology

Heavy crude oil has high acid value, less light components, high density and viscosity, high colloidal asphaltene content, high salt content and heavy metal content, which seriously corrodes oil refining equipment, especially crude oil primary processing equipment, such as atmospheric and vacuum distillation units Directly subject to severe corrosion impact, but the industry has few ways to deal with it. The most important reason is the lack of understanding of the characteristics of the vacuum distillation process

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