NO_xemission reduction system and method

摘要

A method and system to reduce NOx emissions from an engine connected to a fuel tank and an exhaust line, the apparatus including, a reformer to reform the fuel into hydrogen (H2); a fuel cell stack to convert the hydrogen into electricity; a reduction unit disposed on the exhaust line to convert the NOx into N2; a first bypass line to provide a fluid communication between the first fuel tank and the fuel reformer; a second bypass line to provide a fluid communication between the fuel reformer and the fuel cell stack; a first reformate line to provide a fluid communication between the second bypass line and the exhaust line. The hydrogen is mixed with the NOx in the exhaust line, and then the reduction unit uses the hydrogen to convert the NOx into nitrogen (N2).

主权项

1. A NOx emission reduction system to reduce NOx emissions from an internal combustion engine, the system comprising:
an internal combustion engine fluidly connected to a fuel tank; an exhaust line fluidly connected to the internal combustion engine; a fuel reformer to reform a first fuel into hydrogen (H2); a fuel cell stack to convert the hydrogen into electricity, the fuel cell stack fluidly connected to the fuel reformer via a first pipe; a hydrogen selective catalytic reduction (H-SCR) unit disposed on the exhaust line to convert the NOx into N2 using the hydrogen; a second pipe fluidly connecting the fuel cell stack to the fuel reformer, the second pipe not in fluid communication with the first pipe; a reformate line to provide a fluid communication between the first pipe and the exhaust line; and a valve disposed on the first pipe, to independently control flow rates of the hydrogen through the reformate line and the first pipe.