Aromatic hydrocarbon-rich wax oil hydrotreating method

Abstract

The present invention relates to an aromatic hydrocarbon-rich wax oil hydrotreating method, which comprises that: an aromatic hydrocarbon-rich wax oil raw material oil and a gas phase material discharged from a second thermal high pressure separator are mixed, and then enter a first reactor; the first reactor reaction product enters a first thermal high pressure separator; the liquid phase material of the first thermal high pressure separator and circulation hydrogen are mixed, and enter a second reactor, and the gas phase material is cooled and then enters a cold high pressure separator; the gas phase material of the cold high pressure separator is subjected to desulfurization through a hydrogen sulfide removing tower, and the obtained gas is subjected to pressure increase through a compressor, and then is mixed with the circulation hydrogen; the second reactor reaction product enters the second thermal high pressure separator; the liquid phase material of the second thermal high pressure separator and the liquid phase product of the cold high pressure separator are subjected to mixing pressure reduction, and then enter a thermal low pressure separator; and the separated thermal low pressure separator gas phase material and the thermal low pressure separator liquid phase material are respectively processed into various products. The process reaction results show that an aromatic hydrocarbon saturation rate is substantially increased, and a cracking performance of the aromatic hydrocarbon-rich wax oil can be substantially improved.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of wax oil rich in aromatic hydrocarbons. The wax oil rich in aromatic hydrocarbons is a wax oil fraction at 350-600 DEG C. Background technique [0002] At present, the price of crude oil in the world has been fluctuating at a high level. As the nature of crude oil gradually becomes heavier and worse, the price difference between low-quality crude oil and ordinary crude oil tends to increase. In order to obtain better economic benefits, many enterprises focus on the processing of inferior crude oil. Low-quality crude oil, especially high-acid crude oil, is mostly naphthenic crude oil. In addition to high sulfur, nitrogen, and acid values, it has high aromatic content and poor cracking performance. During catalytic cracking processing, it shows low gasoline and diesel yields and coke formation rate. High disadvantages affect the economic benefits of the device, and it is necessary to carry ...

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Problems solved by technology

Low-quality crude oil, especially high-acid crude oil, is mostly naphthenic crude oil. In addition to high sulfur, nitrogen, and acid values, it has high aromatic content and poor cracking performance. During catal

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