Hydro-upgrading combined method
A technology of hydrogenation upgrading and combined methods, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment, etc., can solve the problems of high total investment cost and high operating cost, achieve low operating cost, improve product quality, and save The effect of the device
Active Publication Date: 2009-04-22
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0005] In the prior art, the two processes of wax oil hydrotreating and diesel hydroupgrading are both operated separately. Although they can meet the purpose requirements, since the two processing devices are completely independent, each has independent equipment and pipelines, it will inevitably lead to a total High investment costs, high operating costs, etc.
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[0020] Firstly, the wax oil hydroprocessing raw material oil 1 is mixed with hydrogen gas 2 and enters the hydroprocessing reactor 3 to obtain the hydroprocessing product 4 containing sulfur, nitrogen and other impurities low. Hydroprocessing product 4 is separated in high-pressure separator 5 to obtain liquid hydrogenated wax oil 6 and directly enters the catalytic cracking unit. In high-pressure separator 5, gas phase 7 can be separated to obtain hydrogen-rich gas and light fraction. Gas phase 7 is combined with hydrogenation The reformed product 11 enters the separator 12 together, or a cold high-pressure separator can be used, and the separated gas phase is hydrogen-rich gas 23 and directly enters the recycle gas desulfurization system 14; the diesel feedstock 8 is mixed with hydrogen 9 and enters the hydrogenation reforming reactor 10 , the gas 13 obtained by hydrogenation and upgrading product 11 separated in the separator 12 is desulfurized by circulating hydrogen desulf...
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The invention discloses a hydroprocessing and upgrading integration method, in particular a wax oil hydroprocessing and diesel hydroupgrading integration process. The method comprises the following steps: raw wax oil passes through a first reaction zone in the presence of hydrogen first, liquid obtained after separation of products is taken as catalytic cracking raw material, and hydrogen-rich gas and / or partial light liquid is obtained after the separation; and diesel raw material passes through a second reaction zone in the presence of the hydrogen, gas obtained by separation of products ofthe second reaction zone is mixed with the gas obtained in the first reaction zone, the mixed gas is recycled after desulfurization, and liquid obtained through the separation is subjected to steam stripping to obtain hydrogenant naphtha and hydrogenant diesel. The method aims at technical characteristics of wax oil hydroprocessing and hydroupgrading, integrates the two technologies for application, simplifies process flow at the same time of meeting the same product requirements, ensures the pressure drop of a whole system, and reduces equipment, investment and operating cost.
Description
technical field [0001] The invention relates to a combined hydrogenation and upgrading method, in particular to a combined method of wax oil hydrogenation treatment and diesel oil hydrogenation and upgrading. Background technique [0002] At present, the continuous development of the world economy and the increasingly stringent environmental protection regulations require the production of a large amount of light and clean fuels, which require the improvement and improvement of the existing refining technology to produce products that meet the requirements at the lowest cost. With the increasing shortage of crude oil resources and the development of heavy and inferior quality, catalytic cracking (FCC) and coking have become important means of producing light fuel products, but the quality of products obtained by these two processes is generally difficult to meet strict index indicators Require. In the quality system of light fuel products, sulfur content is the most importa...
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Inventor 刘涛张学辉关明华赵玉琢刘继华曾榕辉潘德满
Owner CHINA PETROLEUM & CHEM CORP