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Process and apparatus for removal of heavy polynuclear aromatics in a hydrocracking process

A technology for hydrocracking and compounding, which is applied in hydrotreating process, cracking of hydrocarbon oil, processing of hydrocarbon oil, etc., which can solve the problems of loss of output and lack of market for unconverted oil.

Inactive Publication Date: 2019-05-03
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, due to economic and logistical considerations, this is usually not advisable due to yield loss and lack of market for the unconverted oil

Method used

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  • Process and apparatus for removal of heavy polynuclear aromatics in a hydrocracking process
  • Process and apparatus for removal of heavy polynuclear aromatics in a hydrocracking process
  • Process and apparatus for removal of heavy polynuclear aromatics in a hydrocracking process

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Embodiment Construction

[0026] The following detailed description is merely exemplary in nature and is not intended to limit the various embodiments or their application and uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description. The accompanying simplification is achieved by eliminating the bulk of equipment normally employed in processes of this nature such as vessel internals, temperature and pressure control systems, flow control valves, recirculation pumps, etc. (these are not specifically required to illustrate the performance of the present invention). picture. Furthermore, the description of the methods of the present invention in the context of specific figure embodiments is not intended to limit the invention to the specific embodiments described herein.

[0027] We have found that passing only a portion of the fractionator bottoms stream containing unconverted oil reduces the accumulation of HPNA in th...

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PUM

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Abstract

Processes and apparatuses are disclosed for removing heavy polynuclear aromatic compounds from a hydrocracked stream comprising passing at least a portion of the hydrocracked stream to a fractionationcolumn to provide a plurality of fractionator product streams and a fractionator bottoms stream comprising unconverted hydrocarbons. A first stream and a second stream are taken from the fractionatorbottoms stream. The first stream is passed through a heavy polynuclear aromatic adsorption zone to obtain a treated bottoms stream having a reduced concentration of heavy polynuclear aromatic compounds. The second stream is bypassed around the heavy polynuclear aromatic adsorption zone. Finally, the treated bottoms stream and the bypassed second stream are hydrocracked.

Description

[0001] priority statement [0002] This patent application claims priority to U.S. Patent Application No. 62 / 373,189, filed August 10, 2016, the contents of which are hereby incorporated by reference in their entirety. technical field [0003] The technical field relates generally to methods and apparatus for the hydrocracking of hydrocarbon streams. More particularly, the technical field relates to improved methods and apparatus for removing heavy polynuclear aromatic compounds from hydrocracking processes. Background technique [0004] Hydroprocessing may include the process of converting hydrocarbons into more valuable products in the presence of a hydroprocessing catalyst and hydrogen. Hydrocracking is a hydroprocessing process in which hydrocarbons are cracked into lower molecular weight hydrocarbons in the presence of hydrogen gas and a hydrocracking catalyst. Depending on the desired output, the hydrocracking unit may contain one or more fixed beds of the same or di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/06C10G47/00
CPCC10G67/06C10G2300/202C10G2300/205
Inventor 保罗·R·齐默尔曼
Owner UOP LLC