ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 11, Number 4
JKCSEZ 11(4)
August 20, 1967 

When anthracite burns by natural draft the mole percent of carbon monoxide (CO%) contained in exhaust gas is approximately expressed as follows in the early stage of combustion. (CO%) = 2α/(1 + α)(CO2%) exp [-k(vector)(NO2-Nc)1/2τ] where α = (-0.395 Kp + √(0.156 Kp2 + (0.83 + 0.21 Kp)Kp))/(0.83 + 0.21Kp) and log Kp = -8592/T + 2.45 log T -1.08 × 10-3T + 1.12 × 10-7T2 + 2.77 k(vector), NO2 and Nc are the rate constant for the reaction (CO + 1/2 O2 → CO2), mole fraction of oxygen and oxides of carbon contained in the exhaust gas, respectively. From experimental evidence obtained in this work with natural draft combustion of briquettes the percent of carbon monoxide to the total quantity of oxides of carbon produced and rate of air flow into the furnace were: 1.76% and 0.53 l/sec (When lid is used in the furnace) 12.35% and 2.4 l/sec (without use of a lid). is the rate constant for the reaction(CO + 1/2 O2 → CO2) and N0, and Nc are respectively the molefraction of oxygen and oxide of carbon contained in the exhaust gas.