| 摘要 |
The method involves guiding a process exhaust gas (P) through a combustion chamber (1). Heat is produced in the combustion chamber by combustion of fuel. The fuel is burned with an oxygen-rich gaseous mixture, which comprises oxygen contents of 25 vol.%. Gaseous component of the process exhaust gas is partially used as the fuel. The fuel together with the oxygen-rich gaseous mixture is burned using a burner (2) i.e. burner lance, guided into the combustion chamber. The process exhaust gas is heated to temperature of 200 to 1.700 degree C. The fuel is liquid or gaseous fuel such as heavy or fuel oil, methane, ethane, butane and/or propane. Independent claims are also included for the following: (1) a device for heating a process exhaust gas by a thermal process (2) a pyrolysis method. |
