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Method for hydrotreatment of continuous liquid-phase wax oil

A technology for hydrogenation and treatment of wax oil, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of hydrogen shortage in hydrocarbon oil, etc., and achieve the goal of increasing processing capacity, reducing operating costs, and low cycle ratio Effect

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] What the present invention aims to solve is the problem of insufficient dissolved hydrogen in the hydrocarbon oil when the continuous liquid phase hydrogenation method is used in the prior art to process hydrocarbon oil with excessive chemical hydrogen consumption

Method used

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  • Method for hydrotreatment of continuous liquid-phase wax oil
  • Method for hydrotreatment of continuous liquid-phase wax oil
  • Method for hydrotreatment of continuous liquid-phase wax oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The trade name of the hydrogenation catalyst used in Example 1 is RVS-420, both of which are produced by Sinopec Catalyst Company.

[0043] Example 1

[0044] A high-sulfur vacuum gas oil fraction from the Middle East is used as a feedstock oil, mixed with reactor effluent and hydrogen, and the mixed material is introduced into a reactor equipped with a hydrofining catalyst. The raw material oil undergoes deep hydrodesulfurization reaction under the action of hydrorefining catalyst. The reaction conditions are: reaction temperature 380°C, total liquid hourly volume space velocity 1.68h -1 , the pressure of the reaction system is 8.0MPa, the volume ratio of hydrogen to liquid under standard conditions is 20-30v / v, the catalyst is 3 beds in the reactor, and a mixer is arranged between the two beds, and the reaction The material is mixed again with fresh hydrogen. The reactor effluent enters the high-pressure separator and is fed with hydrogen for stripping. The liquid p...

Embodiment 2

[0049] A mixture of Middle Eastern high-sulfur vacuum gas oil fraction and coker gas oil is used as feed oil, mixed with reactor effluent and hydrogen, and the mixed material is introduced into a reactor equipped with a hydrogenation catalyst. The reactor is filled with a supported hydrorefining catalyst RN-32V, which is produced by Sinopec Changling Catalyst Factory.

[0050] The raw material oil undergoes deep hydrodesulfurization reaction under the action of a hydrorefining catalyst. The reaction conditions are: reaction temperature 363°C, fresh raw material oil liquid hourly volume space velocity 1.62h -1 , the pressure of the reaction system is 8.0MPa, the volume ratio of hydrogen to liquid under standard conditions is 20-30v / v, the catalyst is 3 beds in the reactor, and a mixer is arranged between the two beds, and the reaction The material is mixed again with fresh hydrogen. The reactor effluent enters the first high-pressure separator and is fed with hydrogen for stri...

Embodiment 3

[0053] A mixture of Middle Eastern high-sulfur vacuum gas oil fraction and deasphalted oil is used as feed oil, mixed with reactor effluent, hydrogen, and the mixed material is introduced into a reactor equipped with a hydrogenation catalyst. The reactor is filled with a supported hydrorefining catalyst RN-32V, which is produced by Sinopec Changling Catalyst Factory.

[0054] The raw material oil undergoes deep hydrodesulfurization reaction under the action of a hydrorefining catalyst. The reaction conditions are: reaction temperature 380°C, fresh raw material oil liquid hourly volume space velocity 1.80h -1 , the pressure of the reaction system is 14.0MPa, the volume ratio of hydrogen to liquid under standard conditions is 20-30v / v, the catalyst has 3 beds in the reactor, and a mixer is provided between the two beds, and the reaction The material is mixed again with fresh hydrogen. The reactor effluent enters the first high-pressure separator and is fed with hydrogen for str...

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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...

Claims

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Application Information

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IPC IPC(8): C10G45/02
CPCC10G45/02C10G2300/202C10G2400/02
Inventor 蒋东红任亮丁石高晓冬张毓莹龙湘云胡志海聂红
Owner CHINA PETROLEUM & CHEM CORP
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