Furnaces, Incinerators, Combustion Chambers
Furnaces, incinerators and combustion chambers are used for different processes. They can play different roles and have various functions, but all of them include a burner, located in the combustion chamber, which may be followed by waste heat boilers, stacks, or combustion product going directly for the needs of the process.
Incinerators can be used for disposal of harmful gas, emission of which is prohibited by environmental norms. Most frequently incinerators are used for incineration of hydrogen sulfide gas in Claus process, bitumen and some other units. More rarely they are used for incineration of ammonia, methanol containing gas and liquids, as well as organic oils of different origin.
Claus process also makes use of reaction furnaces, the firebox of which is a simple combustion chamber. In catalytic cracking processes a start-up furnace (mixing chamber) is used, which preheats the process line before the start-up, producing a hot mixture of air and flue gas.