Systems and methods for oxidation of boil-off gas

A system comprising:

• a cryotank configured to contain a cryogenic fluid;
• a control valve operably connected to the cryotank, the control valve configured to release a boil-off gas stream from the cryotank, the boil-off gas stream comprising a boil-off gas;
• a mixing module disposed downstream of the cryotank and configured to receive and mix the boil-off gas stream and an oxygen stream to form a mixed stream;
• an oxidation module disposed downstream of the mixing module and configured to receive the mixed stream, the oxidation module comprising a catalytic converter configured to oxidize the boil-off gas in the mixed stream to produce an exhaust stream that is output downstream from the oxidation module;
• and
• an energy generation module disposed downstream of the oxidation module and configured to use the exhaust stream to provide energy for operating at least a portion of the system.

A tangible and non-transitory computer readable medium comprising one or more computer software modules configured to direct at least one processor to:

• direct a boil-off gas stream comprising boil-off gas from a cryotank to a mixing module;
• direct an oxygen stream to the mixing module;
• mix the boil-off gas stream and the oxygen stream in the mixing module to produce a mixed stream;
• direct the mixed stream through an oxidation module comprising a catalytic converter, whereby an exhaust stream is produced by the catalytic converter;
• and
• direct the exhaust stream through at least one of:
• a heat exchanger comprising a first passage and a second passage and configured to exchange heat between streams passing through the first and second passages, the first passage configured to receive the exhaust stream, the second passage configured to receive a fluid including the boil-off gas, the second passage comprising an inlet and an outlet, whereby the inlet and the outlet of the second passage are disposed upstream of the oxidation module, whereby the heat exchanger is configured to heat the fluid including the boil-off gas and cool the exhaust stream, whereby the fluid including the boil-off gas is heated by the heat exchanger upstream of the oxidation module;
• or
• an energy generation module disposed downstream of the oxidation module and configured to use the exhaust stream to provide energy for operating at least a portion of a system configured to process the boil-off gas stream.