A kind of continuous liquid phase wax oil hydrogenation treatment method

Abstract

The invention relates to a method for hydrotreatment of continuous liquid-phase wax oil. Wax oil raw oil, an effluent from a reactor and hydrogen are mixed in mixers to form a mixture, hydrogen can be dissolved in hydrocarbon oil in a form of bubbles by virtue of hydrogen distributors arranged inside the mixers, the amount of hydrogen is higher than the saturated solubility of liquid or the total hydrogen consumption, a plurality of bed layers are arranged in the reactor, the mixers are arranged among the bed layers, the mixture and fresh hydrogen or a mixture of hydrogen and partial reaction products are mixed again, a partial effluent from the reactor is partially circulated and a partial effluent is subjected to cooling, separating and fractional distillation to obtain the product. By the method, the problems that reaction process is difficult to process due to the limitation on the solubility of hydrogen in the hydrocarbon oil and the chemical hydrogen consumption is relatively high are solved and the adaptability of raw oil is expanded and furthermore, under the condition of relatively low circulation ratio, low-sulfur refined wax oil can be produced to provide high-quality feedstock for catalytic cracking.

Description

technical field

[0001] The invention belongs to a method for treating hydrocarbon oil in the presence of hydrogen, more specifically, a continuous liquid-phase wax oil hydrogenation treatment method. Background technique

[0002] With the increasingly stringent environmental protection regulations and the enhancement of people's awareness of environmental protection, people's demand for clean vehicle fuel is increasing, and at the same time, more and more attention is paid to the cleanliness of the production process of vehicle fuel.

[0003] Catalytic cracking technology is one of the key technologies for producing gasoline and diesel, and plays an important role in my country's oil refining industry. In order to produce clean gasoline and diesel, it is usually divided into pre-hydroprocessing technology and post-hydroprocessing technology. The pre-hydrogenation technology is wax oil hydroprocessing technology. This technology can not only greatly reduce the sulfur content...

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