Unionfining technological process

A process method and hydrotreating technology are applied in the fields of diesel hydro-upgrading, diesel hydro-refining, and wax oil hydro-treating, which can solve the problems of high operating cost and high total investment cost, and achieve low operating cost and saving refrigeration. High-grade and cold-low-grade equipment, the effect of saving new hydrogen compressors

Active Publication Date: 2009-04-22
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0006] In the prior art, the two processes of wax oil hydrotreating and hydrofining are operated separately. Although the purpose requirements can be met, because the two sets of processing devices are completely independent and each has independent equipment and pipelines, the total investment cost is bound to be high. , high operating costs, etc.

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  • Unionfining technological process

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Embodiment Construction

[0024] Firstly, the raw material oil 1 for hydroprocessing of wax oil is mixed with hydrogen gas 2 and enters the hydroprocessing reactor 3 to obtain the hydroprocessing reaction effluent 4 containing sulfur, nitrogen and other impurities low. The hydroprocessing product 4 is separated in the hot high-pressure separator 5 to obtain liquid hydrogenated wax oil 6 and directly enters the catalytic cracking unit, and the gas phase 7 obtained by separating in the hot high-pressure separator 5 includes hydrogen and light distillates, and the gas phase 7 is combined with hydrogenation The modified low-quality diesel distillate feedstock oil 8 is mixed into the hydroreforming reactor 9 . After a series of reactions, the hydrogenation upgrading reaction effluent 10 is obtained. The hydrorefining reaction effluent 10 continues to mix with the diesel fraction raw material 11 and enters the hydrofinishing reactor 12 to obtain the hydrofinishing reaction effluent 13, which is separated in ...

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Abstract

The invention discloses a combined hydrogenation process method, in particular a combined hydrogenation process method for wax oil hydroprocessing, poor ignition quality fuel hydroupgrading and diesel hydrorefining. The method comprises the following steps: raw wax oil passes through a first reaction zone in the presence of hydrogen first, liquid after separation of products is taken as catalyticcracking raw material; the gas phase obtained through separation is mixed with poor ignition quality fuel raw material to enter a second reaction zone for hydroupgrading reaction; products in the second reaction zone are mixed with other diesel raw materials to enter a third reaction zone for hydrorefining reaction; and gas after separation of products in the third reaction zone is recycled afterdesulfurization, and liquid obtained after separation is subjected to steam stripping to obtain hydrogenant naphtha and hydrogenant diesel. The method aims at technical characteristics of wax oil hydroprocessing, poor ignition quality fuel hydroupgrading and diesel hydrorefining, integrates the three technologies organically, simplifies process flow at the same time of meeting the same product requirements, and reduces equipment, investment and operating cost.

Description

technical field [0001] The invention relates to a combined hydrogenation process method, in particular to a combined method of wax oil hydrotreating, diesel hydrogenation upgrading and diesel hydrogenation refining. Background technique [0002] At present, the continuous development of the world economy and the increasingly strict environmental regulations require the production of a large amount of light and clean fuels, which all require the improvement and improvement of the existing oil 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 product quality obtained by these two processes is generally difficult to achieve strict index indicators. Require. In the quality system of light fuel products, the sulfur content is the most im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 关明华刘涛曾榕辉石友良郭蓉黄新露白振民
Owner CHINA PETROLEUM & CHEM CORP
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