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Hydrocarbon Gas Treatment

A technology for residual gas and heavy hydrocarbons, applied in cold treatment separation, solidification, lighting and heating equipment, etc., can solve problems such as unreachable

Active Publication Date: 2015-10-21
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In practice, however, the ideal situation cannot be achieved because conventional demethanizers operate primarily as strippers

Method used

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Embodiment approach

[0055] as earlier figure 2 Referring to the illustrated embodiment of the invention, the first distillation vapor stream 45 is partially condensed and the resulting condensate is used to absorb valuable C 3 Components and Heavy Components. However, the present invention is not limited to this embodiment. For example, it may be advantageous to treat only a portion of these vapors in this manner, where other design considerations indicate that portions of these vapors or condensates should bypass rectification section 118c and / or absorption section 118d of process plant 118, Or use only part of the condensate as absorbent. Some circumstances may prefer to fully condense first distillation vapor stream 45 in condensation section 118b rather than partially condense. Some circumstances may prefer that the first distillation vapor stream 45 be the entire vapor side draw from stripping section 118e, rather than a portion of the vapor side draw. It should also be noted that, depen...

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Abstract

A process and an apparatus are disclosed for a compact processing assembly to recover ethane, ethylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled and divided into first and second streams. The first stream is further cooled, expanded to lower pressure, and supplied as a feed between two absorbing means. The second stream is expanded to lower pressure and supplied as a bottom feed to the lower absorbing means. A distillation liquid stream from the bottom of the lower absorbing means is heated in a heat and mass transfer means to strip out its volatile components. A distillation vapor stream from the top of the heat and mass transfer means is cooled by a distillation vapor stream from the top of the upper absorbing means, thereby forming a condensed stream that is supplied as a top feed to the upper absorbing means.

Description

technical field [0001] The present invention relates to a process and apparatus for separating hydrocarbon-containing gases. Applicants claim benefit under U.S. Provisional Application No. 61 / 186,361, filed June 11, 2009, under 35 U.S.C. § 119(e). Applicant also claims the benefit of continuation of the application pursuant to 35 U.S.C. § 120 as part of U.S. Patent Application No. 12 / 772,472, filed May 3, 2010, filed March 31, 2010 U.S. Patent Application No. 12 / 750,862 filed on March 4, 2010, U.S. Patent Application No. 12 / 717,394 filed on March 4, 2010, U.S. Patent Application No. 12 / 689,616 filed on January 19, 2010, and U.S. Patent Application No. 12 / 372,604 filed on March 17. The assignees S.M.E. Products LP and Ortloff Engineers, Ltd. are parties to a joint research agreement in effect prior to the invention of the present application. [0002] Ethylene, ethane, propylene, propane and / or heavy hydrocarbons can be recovered from a variety of gases such as natural gas, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J3/00
CPCF25J3/0209F25J3/0219F25J3/0233F25J3/0238F25J3/0295F25J2200/02F25J2200/30F25J2200/78F25J2200/80F25J2205/04F25J2210/12F25J2240/02F25J2270/12F25J2270/60F25J2290/40F25J3/00F25J5/00
Inventor A·F·约翰克W·L·刘易斯J·D·威尔金森J·T·林奇H·M·赫德森K·T·奎拉尔
Owner UOP LLC
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