Formaldehyde Emission Reduction in Natural Gas Fired Reciprocating Internal Combustion Engines (RICE)

摘要

Exhaust from an NG fired stationary or non-stationary RICE, such as, for example, a lean burn RICE, is directed to a first oxidation catalyst, then to a second oxidation catalyst. The second oxidation catalyst is operated at a temperature higher than a minimum temperature required to oxidize formaldehyde (to CO2 and H2O) and lower than a minimum temperature required to form formaldehyde, e.g., from CH4 and O2.

主权项

1. A method for reducing HCOH emissions from an NG or methane fired stationary RICE, the method comprising:
directing exhaust from the NG or methane fired stationary RICE to a first oxidation catalyst, then to a second oxidation catalyst, wherein the second oxidation catalyst is operated at a temperature that is above a minimum temperature required for the oxidation of HCOH, and below a minimum temperature required to form HCOH.