Hydro-upgrading combined method

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...

AI Technical Summary

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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