Gasification technology burner protection device and protection method

The invention belongs to a gasification technology burner protection device and a protection method. The gasification technology burner protection device comprises a gasification furnace, wherein a plurality of technology burner chambers are arranged at the upper part of the gasification furnace; each technology burner chamber is internally provided with a gasification technology burner and is connected with the gasification technology burner; a crude synthetic gas outlet is formed in the bottom of the gasification furnace; the crude synthetic gas outlet is connected with a CO2 absorption tower through a conversion furnace; the CO2 absorption tower is connected with a CO2 gas inlet hole through a CO2 resolving tower, a CO2 compressor, a first filter, a second filter, a heat exchanger and a regulating valve in sequence; the gasification technology burner comprises a technology burner body with a coal slurry and oxygen channel; a technology burner flange disc is adaptive to a flange at the end part of each tech