Optimized co-generating system and recovery method for power, water and nitrogen

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;
• and
• a two-stage condenser comprising an air cooler and a water cooler connected in series,
• 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 two-stage 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.

A recovery system comprising:

• a Rankine cycle system, comprising:
• a first stage heat exchanger;
• a plurality of second stage heat exchangers configured to receive a refrigerant in parallel and receive a flue gas feed in series;
• a third stage heat exchanger;
• a turbo-expander;
• and
• at least one condenser,
• wherein:
• the Rankine cycle system is configured to generate electricity with heat provided by the 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.