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A process for hydrotreating a hydrocarbon residue stream

A hydroprocessing and logistics technology, which is applied in hydroprocessing process, hydrocarbon oil treatment, refining to remove heteroatoms, etc., can solve the problems of catalyst deactivation, hydrocracking catalyst life shortening, etc.

Pending Publication Date: 2021-03-05
UOP LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it was found that hydrocracking catalysts had significantly shortened lifetimes when dealing with residue feedstocks due to severe catalyst deactivation by residue molecules

Method used

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  • A process for hydrotreating a hydrocarbon residue stream

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Embodiment Construction

[0035] 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. Simplifies the drawing by removing a large amount of equipment such as vessel internals, temperature and pressure control systems, flow control valves, recirculation pumps, etc. that are typically employed in a method of this nature (these are not specifically required to illustrate the performance of the method) . Furthermore, the description of the current method in the embodiments of the specific drawings is not intended to limit the method to the specific embodiments described herein.

[0036] As shown, process flow lines in the figures may be referred to interchangeably as, for example, lines, pipes, branches, distributors, streams, effluents, feeds, products, parts, catalysts, draw...

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Abstract

The invention relates to a process for hydrotreating a hydrocarbon residue stream. A process for hydrotreating a hydrocarbon residue stream is provided. The process comprises hydrotreating the hydrocarbon residue stream over a demetallation catalyst to demetallize the hydrocarbon residue stream to provide a demetallized hydrocarbon residue stream reduced in metals and sulfur concentration. The demetallized hydrocarbon residue stream is separated in a hot separator to provide an overhead vapor stream comprising hydrogen and a bottoms liquid stream. The bottoms liquid stream is split into a first liquid stream and a second liquid stream comprising low sulfur fuel oil. The second liquid stream is recovered as a low sulfur fuel oil product stream. The first liquid stream is hydrotreated over adesulfurization catalyst in the presence of at least a portion of the overhead vapor stream to provide a desulfurized hydrocarbon residue stream. The present process provides low sulfur fuel oil product stream comprising from 0.3 wt% to 1.5 wt% sulfur.

Description

[0001] claim of priority [0002] This application claims priority to US Application Serial No. 16 / 558,067, filed August 31, 2019, which is incorporated herein by reference in its entirety. technical field [0003] The field relates to methods for hydrotreating hydrocarbon residue streams. In particular, the art relates to the desulfurization of hydrocarbon residue streams. Background technique [0004] A residue or residue stream is produced from the bottom of the fractionation column. The atmospheric residue (AR) is the bottom product of the atmospheric column. The vacuum residue (VR) is the bottom product of the vacuum distillation column. One application of the residual stream is for the production of specific process feeds. Residue stream is a general term describing a hydrocarbon-containing stream having a boiling point higher than that which can be distilled in a distillation column. For example, when involving prior art atmospheric distillation, most of the weig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/4006C10G2300/4012C10G2300/202C10G45/02C10G65/04C10G2300/205C10G2300/1077C10G2300/107C10G67/14C10G69/04C10G2300/207
Inventor 孙平
Owner UOP LLC
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