Hydro-upgrading combined method

A technology of hydrotreating and upgrading, combined method, applied in hydrotreating process, petroleum industry, treating hydrocarbon oil, etc., can solve the problems of high total investment cost and high operating cost, and save cold high fraction and cold low fraction equipment , Low operating costs, and the effect of improving product quality

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.

Method used

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  • Hydro-upgrading combined method

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Embodiment Construction

[0019] Firstly, the wax oil hydroprocessing raw material oil 1 is mixed with the circulating hydrogen 2 and enters the hydroprocessing reactor 3 to obtain the hydroprocessing product 4 containing sulfur, nitrogen and other impurities low. The hydrotreated product 4 is separated in the hot high-pressure separator 5 to obtain liquid hydrogenated wax oil and directly enters the catalytic cracking, and the separated gas phase (the gas phase includes hydrogen and light hydrocarbons) 7 is mixed with the hydrogenated diesel feed oil 8 Enter the hydrogenation upgrading reactor 9. After a series of reactions, the hydrogenation modification product 10 is obtained. The hydrogenation and upgrading product 10 is separated in the high-pressure separator 11 and the hydrogen sulfide-containing gas 12 enters the dehydrogen sulfide tower 13, and the obtained recycle gas 14 after dehydrogen sulfide is pressurized by the recycle hydrogen compressor 15 and then mixed with new hydrogen 16 Mix and ...

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Abstract

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 materia; the gas phase obtained through separation is mixed with diesel raw material to enter a second reaction zone; and gas after separation of products in the second reaction zone is recycled after desulfurization, and liquid obtained after separation is subjected to fractionation 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, and reduces equipment, investment and operating cost at the same time of reaching high product quality. The method is appliedto newly built equipment to reduce equipment investment and applied to expanding reformation of the prior devices.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 方向晨刘涛赵玉琢曾榕辉孙洪江廖娜
Owner CHINA PETROLEUM & CHEM CORP
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