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Process and apparatus for removing hydrogen sulfide

a hydrogen sulfide and hydrogen sulfide technology, applied in the field of process and an apparatus for removing hydrogen sulfide, can solve problems such as product specifications that cannot meet the requirements of production

Inactive Publication Date: 2014-04-03
UOP LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent describes a process and apparatus for removing hydrogen sulfide from a fractionated hydroprocessed effluent. The process involves stripping the effluent, fractionating it to obtain a naphtha cut, and sending it to a hydrogen sulfide removal zone, which may include an amine wash settler, an amine contacting column, or a steam stripper. The technical effect of the patent is to provide a method for producing products meeting specifications, such as a copper strip corrosion test, by effectively removing excess hydrogen sulfide from the fractionator overhead product. The method also includes multiple stages of hydrogen sulfide removal using various techniques, such as a two-stage amine wash or a packed column amine contactor.

Problems solved by technology

As a result, the product can fail specifications, such as failing to pass a copper strip corrosion test.

Method used

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  • Process and apparatus for removing hydrogen sulfide
  • Process and apparatus for removing hydrogen sulfide
  • Process and apparatus for removing hydrogen sulfide

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Embodiment Construction

[0024]Referring to FIG. 1, an exemplary apparatus 100 can include a hydroprocessing zone 120, a primary stripper 160, a fractionation column 200, and a hydrogen sulfide removal zone 300. Generally, the hydroprocessing zone 120 can receive a feed 110 that often contains one or more hydrocarbons.

[0025]Often, the feed 110 can be any suitable heavy oil feedstock. Such a heavy oil feedstock can include one or more hydrocarbonaceous streams having components boiling above about 280° C., such as atmospheric gas oils, vacuum gas oils, deasphalted, vacuum, and atmospheric residua, coker distillates, straight run distillates, solvent-deasphalted oils, pyrolysis-derived oils, high boiling synthetic oils, cycle oils, hydrocracked feeds, and cat cracker distillates, although hydrocarbons boiling below about 280° C. may be present as well. These hydrocarbonaceous feed stocks may contain from about 0.1-about 4%, by weight, sulfur. Other suitable heavy oil feedstocks are disclosed in, e.g., U.S. Pa...

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Abstract

One exemplary embodiment can be a process for removing hydrogen sulfide from a fractionated hydroprocessed effluent. The process can include stripping a hydroprocessed effluent from a hydroprocessing zone, fractionating the stripped hydroprocessed effluent to obtain a naphtha cut, and sending the naphtha cut to a hydrogen sulfide removal zone. The hydrogen sulfide removal zone can include an amine wash settler, an amine contacting column, or a steam stripper.

Description

FIELD OF THE INVENTION[0001]This invention generally relates to a process and an apparatus for removing hydrogen sulfide.DESCRIPTION OF THE RELATED ART[0002]The fractionation section of a hydroprocessing unit often includes a stripper column followed by a fractionator. The stripper column can remove hydrogen sulfide from the fractionator feed stream. However, some hydrogen sulfide may remain in the stripper effluent and can carry over to downstream units. Often, the hydrogen sulfide in the stripper effluent can concentrate in the fractionator overhead. A product, such as a light naphtha, exiting the top of the column and passing from a fractionator receiver can contain the hydrogen sulfide. As a result, the product can fail specifications, such as failing to pass a copper strip corrosion test. Hence, there is a need to provide a process and / or apparatus that can remove hydrogen sulfide and meet product specifications.SUMMARY OF THE INVENTION[0003]One exemplary embodiment can be a pr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G29/02C10C1/20
CPCC10G19/00B01D3/143C10G21/16C10G21/20C10G53/12C10G67/04C10G67/10
Inventor BANERJEE, SOUMENDRA MOHANVARADARAJAN, SRINIVASA GOPALAN-RAJANPANCHAPAKESAN, RAJARAMANBALAKRISHNAN, BABU
Owner UOP LLC
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