HEAVY OIL EMULSIFIED FUEL EVAPORATOR SYSTEM AND OPERATION METHOD THEREOF

摘要

In a heavy oil emulsified fuel evaporator system in which a heavy oil emulsified fuel, after preheated at a preheater, is led into an evaporator to be heated and then to a separator for separation of its water content and the water content, after separated, is used as a preheating source medium for said preheater, wherein water content separation to a predetermined level is enabled irrespective of load change in a heavy oil fuel combustion equipment and no light oil content is discharged together with the separated water content. Heavy oil emulsified fuel 11a is preheated at a preheater 13, is heated at an evaporator 14 and is led into a separator 15 to be separated of its water content. Water content, after separated, is sent via a piping 15a to be used as the preheating source medium for the preheater 13. Inlet temperature of the evaporator 14 is controlled constant and pressure in the piping 15a for leading the preheating source medium into the preheater 13 is also controlled constant. Further, temperature difference of outlet temperature relative to the inlet temperature of the evaporator 14 is controlled constant. Thereby, the water content in the heavy oil fuel coming out of the separator 15 can be maintained to a predetermined value.