Powder-combustible vortex burner

Abstract

A vortex burner of combustible micropowder i.e pulverized coal is prepared by setting primary cooling jacket with an ignition device at the centre of it and a flame detection device at jacket top cover ; arranging primary , secondary and tertiary cooling jackets in sequence coaxially as radial outwards to form primary and secondary air channel and cooling channel , tertiary micropowder channel and tertiary channel ; connecting primary air-channel to fuel gas inlet tube and gasifying agent inlet tube after they are combined for switching over two gases by valve ; setting spiral - flow device at secondary air-channel outlet and jetting out pulverized coal in spiral - flow way at its conveying tube outlet.

Description

Technical field

[0001] The invention relates to a burner, in particular to a swirl burner using combustible powder as fuel for gasification furnaces and heating furnaces. Background technique

[0002] Among the existing coal gasification technologies, the technologies of Texaco and Shell are relatively mature and have been applied by many domestic manufacturers. Both have their own characteristics in burner design. Among them, the Texaco gasifier burner uses coal water slurry as fuel. The burner is divided into three layers of channels. The medium of the central channel is oxygen, the medium of the second channel is coal water slurry, and the medium of the outermost channel is still oxygen. The burner with this structure is very mature, but it also has its own shortcomings: (1) The coal water slurry has strong wear on the nozzle, so the wearing parts must be replaced frequently (the life of the wearing parts is generally 30 to 60 days); (2) ) The coal-water slurry and oxyge...

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