Title:
Processing of hydrocarbon gas
Document Type and Number:
Japanese Patent JP5909227
Kind Code:
B2
Abstract:
A process and an apparatus are disclosed for removing carbon dioxide from a hydrocarbon gas stream. The gas stream is cooled, expanded to intermediate pressure, and supplied to a fractionation tower at a top column feed position. The tower overhead vapor stream is compressed to higher pressure and cooled to partially condense it, forming a condensed stream. The condensed stream is expanded to intermediate pressure, used to subcool a portion of the tower bottom liquid product, then supplied to the tower at a mid-column feed position. The subcooled portion of the tower bottom liquid product is expanded to lower pressure and used to cool the compressed overhead vapor stream. The quantities and temperatures of the feeds to the fractionation tower are effective to maintain the overhead temperature of the fractionation tower at a temperature whereby the major portion of the carbon dioxide is recovered in the tower bottom liquid product.
Inventors:
Queer tee, kyle tea
Wilkinson, John Dee
Hudson, hank em
Wilkinson, John Dee
Hudson, hank em
Application Number:
JP2013513249A
Publication Date:
April 26, 2016
Filing Date:
May 27, 2011
Export Citation:
Assignee:
Autorov Engineers Limited
International Classes:
F25J3/02; C01B32/50; C10L3/10; F25J3/08
Domestic Patent References:
| JP56501690A | ||||
| JP2011500923A |
Foreign References:
| US4318723 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino
Morishita Azusa
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino
Morishita Azusa