Waste gas incineration control

A process for substantially completely converting a fluctuating concentration of carbon monoxide in a fluctuating volume of waste gas into carbon dioxide in a combustion chamber, comprising:

• supplying fuel to the combustion chamber in an amount sufficient to maintain a relatively constant temperature greater than approximately 1157.degree. F therein;
• feeding waste gas containing carbon monoxide to said combustion chamber;
• measuring the percentage of carbon monoxie in said waste gas;
• feeding free oxygen to the combustion chamber;
• exhausting the gas directly from said combustion chamber;
• measuring the actual percentage of free oxygen in said exhaust gas directly exhausted from the combustion chamber;
• calculating an optimum percentage of free oxygen in said exhaust gas based on the formula:
• optimum percentage of free oxygen in exhaust gas = 0.5 + (0.14 .times. the percentage of carbon monoxide in the waste gas);
• and
• adjusting the volume of free oxygen being fed to said combustion chamber in an amount sufficient for the actual percentage of free oxygen in said exhaust gas to approximate the optimum percentage of free oxygen in said exhaust gas.

A process for converting a fluctuating concentration of carbon monoxide in a fluctuating volume of waste gas into carbon dioxide in a combustion chamber, comprising:

• supplying fuel selected from the group consisting of natural gas, mixed gas, blast furnace gas, fuel oil and coal to the combustion chamber in an amount sufficient to maintain a temperature of approximately 1550.degree. F to 1650.degree. F therein;
• feeding waste gas containing carbon monoxide to said combustion chamber;
• substantially continuously measuring the percentage of carbon monoxide in said waste gas;
• feeding free oxygen to the combustion chamber;
• exhausting the gas directly from said combustion chamber;
• substantially continuously measuring the actual percentage of free oxygen in said exhaust gas directly exhausted from the combustion chamber;
• substantially continuously calculating an optimum percentage of free oxygen in said exhaust gas based on the formula:
• optimum percentage of free oxygen in exhaust gas = 0.5 + (0.14 .times. the percentage of carbon monoxide in the waste gas);
• and
• adjusting the volume of free oxygen being fed to said combustion chamber in an amount sufficient for the actual percentage of free oxygen in said exhaust gas to approximate the optimum percentage of free oxygen in said exhaust gas.