System and method of recovering carbon dioxide from an exhaust gas stream

A mobile carbon dioxide capture system comprising:

• a transport apparatus;
• a carbon dioxide capture system disposed on said transport apparatus, said carbon dioxide capture system comprising:
• a first heat exchanger configured to exchange heat between an exhaust stream and a lean carbon dioxide effluent stream;
• a second heat exchanger coupled in flow communication with said first heat exchanger, said second heat exchanger configured to cool the exhaust stream such that a condensate is formed, and said second heat exchanger configured to channel a condensate stream for injection into the lean carbon dioxide effluent stream;
• at least one turboexpander comprising:
• a compressor coupled in flow communication with said first heat exchanger and configured to compress the exhaust stream;
• and
• a turbine coupled in flow communication with said first heat exchanger, said compressor driven by said turbine, said turbine configured to expand the lean carbon dioxide effluent stream;
• and
• a carbon dioxide membrane unit coupled in flow communication with said compressor, said carbon dioxide membrane unit configured to separate the exhaust stream into the lean carbon dioxide effluent stream and a rich carbon dioxide effluent stream, said carbon dioxide membrane unit further configured to channel the lean carbon dioxide effluent stream to said first heat exchanger.