Atmospheric and vacuum distillation unit for waste mineral oil based on vacuum cutting fractionation

Abstract

The invention relates to the technical field of fractionation, in particular to an atmospheric and vacuum distillation device for waste mineral oil based on vacuum cutting fractionation. It includes a fractionation structure and a condensation structure installed on the side of the fractionation structure. The fractionation structure includes a fractionation tower. There are multiple outlets on the side of the fractionation tower. There is a pipeline structure on the outside of the fractionation tower. The pipeline structure includes installation pipes connected to the On the discharge port on the side of the fractionation tower, the first installation hole and the second installation hole are opened in the installation pipe. The decompression structure includes a partition, and a round hole is opened on the partition, and a plug is inserted into the round hole. The plug is a tapered structure. , There is a sliding column behind the plug, a connecting column is provided at the end of the sliding column, the sliding column is connected in the connecting column, the connecting column is connected in the first installation hole, the outer cover of the sliding column is provided with a first spring, and the first spring is located between the plug and the connecting column. Among the columns, the purpose of the present invention is to solve the problem of air bubbles in the condensation pipe due to uneven composition during the discharge of mineral oil.

Description

technical field [0001] The invention relates to the technical field of fractionation, in particular to an atmospheric and vacuum distillation device for waste mineral oil based on vacuum cutting fractionation. Background technique [0002] Cutting fractionation refers to the process of separating crude oil into several parts with different boiling point ranges by using the characteristics of different boiling points of the compounds that make up petroleum in the field of crude oil. Cutting fractionation is the process of heating crude oil products to make them into gases and then The method of liquefying and collecting it through the condensation structure, in the process of cutting and collecting, due to the non-uniform product of the raw material itself, the content of various components of the same volume of waste mineral oil is different, when the content of a certain oil is less, the corresponding export Part of the gas will be taken out, and the gas will generate bubbl...

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Problems solved by technology

[0002] Cutting fractionation refers to the process of separating crude oil into several parts with different boiling point ranges by using the characteristics of different boiling points of the compounds that make up petroleum in the field of crude oil. Cutting fractionation is the process of heating crude oil products to make them into gases and then The method of liquefying and collecting it through the condensation structure, in the process of cutting and collecting, due to the non-uniform product of the raw material itself, the content of various components of the same volume of waste mineral oil is different, when the content of a certain oil is less, the corresponding export Part of the gas will be taken out, and the gas will generate bubbles in the condensation tube. The bubbles reduce the contact area between the vaporized mineral oil and the tube wall, which is not conducive to cooling. At the same time, when the cooled mineral oil is discharged, the bubbles at the outlet will It will cause mineral oil to splash, which is not conducive to collection. The purpose of the present invention is to solve the problem of air bubbles in the condensation pipe due to uneven composition during the discharge of mineral oil

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