A Flexible Diesel Hydrogenation Upgrading and Depressing Process

A technology for hydro-upgrading and hydro-pump reduction, which is applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of single product, low pour point of diesel products, and inability to meet low pour point diesel oil, etc. Achieving the effect of high cetane number
CN109988622BActive Publication Date: 2021-07-09CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-07-09

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Abstract

The invention discloses a process for hydrogenation, upgrading and pour point reduction of flexible diesel oil. After the diesel raw material is hydrogenated and refined, it enters the hydrogenation upgrading reactor, and the material passing through the upper hydrogenation upgrading catalyst bed is divided into two strands; one strand of material is extracted from the upgrading reactor through the middle of the bed, and enters the hydrogenation downgrading reactor. The decondensation reaction is carried out in the condensing reactor; another stream of material continues to flow downward through the lower hydrogenation modification catalyst bed; specifications of diesel products. The present invention provides for the first time a hydrogenation upgrading process for simultaneous production of two or more diesel products of different specifications on a set of hydrogenation process equipment, which can make full use of the heat carried by part of the upgrading materials to realize the hydrogenation decondensation reactor Coupling operation with hydro-upgrading reactor.
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Description

technical field

[0001] The invention belongs to the field of petroleum refining, and in particular relates to a diesel hydrogenation upgrading and pour point depressing process for flexibly producing high-quality diesel products. Background technique

[0002] The increasingly stringent environmental protection regulations require higher and higher quality diesel products, mainly due to the increasing restrictions on sulfur content, cetane number, density and polycyclic aromatic hydrocarbon content. Low-quality diesel hydro-upgrading technology can greatly reduce the sulfur content and aromatics content of diesel products, reduce density and increase cetane number. In addition, in winter, diesel products in cold regions have different restrictions and requirements on the freezing point. According to the freezing point, diesel products in my country can be divided into 5#, 0#, -10#, -20#, -35# and -50 # and other different specifications. Hydrogenation decondensation technolo...

Claims

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