Reduction of Greenhouse Gas Emission through Applying Hydrogen-Rich Fuel on Industrial Boiler

Abstract

The combustion of fossil fuel is the major source of greenhouse gases; therefore, fuel switching is viewed as a practical method to reduce greenhouse gas emission. Hydrogen may serve as an alternative for fossil fuel and it is clean. In this study, worthless hydrogen-rich fuel gas (RG), the by-product of the production processes, was led to the fuel system of a 130 t∕h industrial boiler in a full-scale petrochemistry plant to partially replace the fuel oil (FO). The result shows that, by changing the inlet RG:FO volumetric flow rate ratio from 1:5 to 1:1.5, the emission of greenhouse gas is reduced significantly. Four sets of boiler loading, including 80, 70, 60, and 50%, were applied to the boiler at the full-scale plant, and the reduction of C O2 emission by 33.5× 103 , 51.6× 103 , 48.8× 103 , and 44.8× 103 t∕year can be achieved, which is down by 22.9, 39.8, 43.7, and 47.2%. Meanwhile, the amount of N Ox emission can be reduced by 66, 79, 25, and 18 t∕year . Therefore, the use of RG to partly replace F...