Unionfining technological process

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 catalytic cracking 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 after desulfurization, 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 hydrogenation treatment, diesel oil hydrogenation upgrading and diesel oil hydrogenation refining. 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 co...

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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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