Simulation of Filter Cake Co-firing Characteristics in Circulating Fluidized Bed Coal Fired Power Plant

Abstract

A study on co-firing using coal and filter cake biomass was conducted on a circulating fluidized bed boiler power plant varying the co-firing biomass ratio from 0 to 50%. The mixing of coal fuel and filter cake biomass in the model is carried out before entering the mill. After the model iteration shows convergence, the output simulation is validated by comparing the simulation output value with the design and actual parameter values. The evaluation is carried out by comparing the simulation results of baseline conditions with co-firing conditions on the parameters of performance, power output, equipment condition, energy consumption itself, and the impact on emission products. The addition of 1% of the co-firing ratio using rice husks showed a decrease in boiler efficiency (HHV) by 1.3%. Net plant heat rate and SFC increased by 5% and 0.2171%. Furthermore, co-firing using filter cake also reduces SO2 emission by 1.642 ppmv@6% O2, dry.