Condenser unit for NOx emission reduction system

A system for reducing NOx emissions comprising:

• a fuel tank in fluid communication with a fuel converter, wherein the fuel converter is located down stream of the fuel tank and wherein the fuel converter comprises a catalyst composition that is operative to continuously convert heavy hydrocarbons having 13 or more carbon atoms per molecule into light hydrocarbons having 12 or less carbon atoms per molecule to form a gas mixture;
• a condensor unit located downstream of the fuel converter and upstream of a selective catalytic reduction unit;
• the selective catalytic reduction unit in fluid communication with the condensor unit and located downstream of the condensor unit;
• and
• an engine in fluid communication with the fuel tank and the selective catalytic reduction unit, wherein the engine is located downstream of the fuel tank and upstream of the selective catalytic reduction unit;
• wherein the condensor unit comprises a generally cylindrical inner wall defining a cavity having a first lower end and a second upper end, the first lower end is configured to include a gas inlet for receiving the gas mixture from the fuel converter and the second upper end is configured to include the gas outlet in fluid communication with the selective catalytic reduction unit, and a heat exchanger disposed within the cavity along the cylindrical wall dividing the cavity into a lower cavity and an upper cavity, wherein the heat exchanger is configured to contact the gas mixture entering the gas inlet, to allow light hydrocarbons to flow to the selective catalytic reduction unit via the gas outlet, to condense the heavy hydrocarbons to a condensate and collect the condensate in the lower cavity.

A condensor unit comprising:

• a generally cylindrical inner wall defining a cavity having a first lower end and a second upper end, the first lower end is configured to include a gas inlet and the second upper end is configured to include a gas outlet;
• a heat exchanger disposed within the cavity along the cylindrical wall dividing the cavity into a lower cavity and an upper cavity, wherein the heat exchanger is configured to contact a gas entering the gas inlet, to allow a gaseous species to exit via the gas outlet, to condense a condensate from the gas, and to collect the condensate in the lower cavity;
• an outer wall substantially surrounding the inner wall and forming a gap therebetween, the gap being in fluid communication with the heat exchanger, wherein a coolant is circulated through the heat exchanger and the gap;
• and
• a temperature controller configured to maintain a predetermined temperature setpoint of the gaseous species flowing out of the gas outlet by modulating the flow of the coolant.