US 12,110,823 B2
Optimized co-generating system and recovery method for power, water and nitrogen
Samusideen Adewale Salu, Ras Tanura (SA); Hussain M. Bayat, Saihat (SA); and Ali Mohammad Abbas, Ank (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Nov. 3, 2022, as Appl. No. 18/052,474.
Prior Publication US 2024/0151180 A1, May 9, 2024
Int. Cl. F02C 6/18 (2006.01); F25B 27/02 (2006.01); B01D 53/047 (2006.01); B01D 53/26 (2006.01); B01J 20/18 (2006.01); F03G 4/00 (2006.01)
CPC F02C 6/18 (2013.01) [F25B 27/02 (2013.01); B01D 53/047 (2013.01); B01D 53/265 (2013.01); B01D 2253/108 (2013.01); B01D 2257/102 (2013.01); B01J 20/18 (2013.01); F03G 4/035 (2021.08)] 20 Claims
OG exemplary drawing
 
1. A recovery system comprising:
a Rankine cycle system, comprising:
a first stage heat exchanger;
a plurality of second stage heat exchangers;
a third stage heat exchanger;
a turbo-expander;
at least one condenser; and
at least one compressor between the plurality of second stage heat exchangers to pressurize the flue gas feed,
wherein:
the Rankine cycle system is configured to generate electricity with heat provided by a flue gas feed,
the plurality of the second stage heat exchangers is fluidly connected to the first stage heat exchanger and the third stage heat exchanger,
the turbo-expander is fluidly connected to the third stage heat exchanger and the at least one condenser, and
the first stage heat exchanger is fluidly connected to the at least one condenser,
an internal combustion system configured to provide the flue gas feed to the Rankine cycle system, and fluidly connected to the third stage heat exchanger;
a nitrogen generator configured to collect nitrogen from the flue gas feed, and fluidly connected to the first stage heat exchanger and the plurality of the second stage heat exchangers; and
a gas-liquid separator configured to collect water from the flue gas feed, and fluidly connected to the first stage heat exchanger.