Title:
A METHOD TO RECOVER LPG AND CONDENSATES FROM REFINERIES FUEL GAS STREAMS
Document Type and Number:
WIPO Patent Application WO/2019/136566
Kind Code:
A1
Abstract:
A method to recover hydrocarbonfractions from refineries gas streams involves a pre-cooled heat refinery fuel gas stream mixed with a pre-cooled and expanded supply of natural gas stream in an inline mixer to condense and recover at least C3
+ fractions upstream of a fractionator. The temperature of the gas stream entering the fractionator may be monitored downstream of the in-line mixer. The pre-cooled stream of high pressure natural gas is sufficiently cooled by flowing through a gas expander that, when mixed with the pre- cooled refinery fuel gas, the resulting temperature causes condensation of heavier hydrocarbon fractions before entering the fractionator. A further cooled, pressure expanded natural gas reflux stream is temperature controlled to maintain fractionator overhead temperature. The fractionator bottoms temperature may be controlled by a circulating reboiler stream.
Inventors:
LOURENCO JOSE (CA)
MILLAR MACKENZIE (CA)
MILLAR MACKENZIE (CA)
Application Number:
PCT/CA2019/050045
Publication Date:
July 18, 2019
Filing Date:
January 11, 2019
Export Citation:
Assignee:
1304338 ALBERTA LTD (CA)
ALBERTA LTD 1304342 (CA)
ALBERTA LTD 1304342 (CA)
International Classes:
F25J3/02; C10L3/10
Foreign References:
| CA2790961A1 | 2013-11-11 | |||
| US4752312A | 1988-06-21 | |||
| US20110232327A1 | 2011-09-29 | |||
| US4675036A | 1987-06-23 | |||
| US6308532B1 | 2001-10-30 |
Attorney, Agent or Firm:
WOODRUFF, Nathan (CA)
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