A protection mechanism for process burners of entrained bed coal gasifiers

Abstract

The invention provides a protecting mechanism of a technological burner applicable to an entrained-flow bed coal gasifier. The protecting mechanism comprises a cooling water coil 201, a cooling water disc 207, a cooling water inlet pipe 205 and a cooling water outlet pipe 206. The cooling water coil 201 is attached to the outer side of a shell of the technological burner in a surrounding mode. The cooling water disc 207 is arranged on the rear side of the head end of the shell of the technological burner in a surrounding mode. The outer diameter of the cooling water disc 207 is larger than the largest outer diameter of the ring formed when the cooling water coil 201 surrounds the shell of the technological burner. The cooling water inlet pipe 205 and the cooling water outlet pipe 206 are connected to a cooling water inlet and a cooling water outlet of the cooling water disc 207 respectively, and the cooling water inlet and the cooling water outlet are formed in a face unexposed to fire of the cooling water disc 207. According to the protecting mechanism of the technological burner, good heat insulation protection is provided for the head end of the burner, the cooling water coil and a welding seam when the technological burner runs, and the service life of the burner is greatly prolonged.

Description

Technical field [0001] The present invention relates to the field of entrained bed coal gasifier devices, in particular, the invention relates to a protection mechanism for a process burner of a coal gasifier. Background technique [0002] The process burner head of the currently applied entrained bed coal gasifier has a reduced structure: the cooling water coil surrounds the outer wall of the burner outer ring tube and shrinks with the burner nozzle to form a diameter smaller than the diameter of the burner cooling water coil The end surface structure, and a cooling water cavity is provided at the fire end of the burner, and the cooling water enters and exits the cooling water cavity by welding to the inlet and outlet provided on the side wall of the cooling water cavity (such as figure 1 (Shown), in the actual working state, because the burner head and the coil end face are in a high temperature environment above 1300℃ for a long time, the life of the process burner is generally...

AI Technical Summary

Problems solved by technology

Although it provides heat insulation protection for the end of the burner through the heat insulation layer, which is beneficial to prolonging the life of the burner, the cooling water chamber still only has a small cooling effect on the head of the process burner, and the cooling The water coils and welds are still directly exposed to the high temperature of the gasifier, which does not solve the problems that the welds connecting the cooling water chamber to the cooling water inlet and outlet pipes are prone to cracking at high temperatures and the cooling water coils are affected by high temperatures.

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