The invention discloses a method for controlling an igniter burner of a powered
coal pressurized gasifier and provides a method for
logic control of an igniter burner of a multi-
nozzle counter-position type powdered
coal pressurized gasifier. According to the technical scheme, the method comprises the following steps: 1, 'initializing' the igniter burner; 2, 'resetting' the igniter burner in the following way: (1) performing
nitrogen sweeping, (2) establishing emptying flows of
fuel gas and factory air, and (3) switching on inlet
fuel gas and inlet
oxygen flow adjusting valves according to a preset
valve opening and flow relationship; 3, 'igniting' by the igniter burner in the following way: (1) introducing ignition
fuel gas and ignition factory air into the gasifier in sequence and discharging by the igniter, wherein the igniter successfully ignites when a
flame detector of the igniter detects a
flame signal; (2) introducing heating fuel gas and
oxygen into the gasifier in sequence, wherein the ignition of the gasifier is successful when the
flame detector detects a flame
signal and the
hearth temperature of the gasifier is of a rising trend; (3) exiting the igniter and introducing protective
nitrogen gas, and (4) switching the fuel gas and
oxygen during a heating process; 4 'exiting' the igniter burner; and 5, introducing steam to protect the igniter burner. By adopting the method disclosed by the invention, a
logic control scheme and a detection manner are reasonably optimized according to technological requirements of a powdered
coal gasification production device, the ignition success rate and security of a
water cooled wall gasifier are improved, and the driving time and cost are saved.