Coil pipe cooling type burner applied to BGL gasifying furnace

Abstract

The invention discloses a coil pipe cooling type burner applied to a BGL gasifying furnace. The coil pipe cooling type burner comprises a burner body, wherein a cooling water cavity is formed in the front end of the burner body, a partition board is arranged in the cooling water cavity to divide the cooling water cavity into a water inlet cavity and a water outlet cavity, and the water outlet cavity surrounds the water inlet cavity; the cooling water cavity is communicated with a water inlet pipe, and the water outlet cavity is communicated with a water outlet pipe; and a plurality of flow guide holes for communicating the water inlet cavity with the water outlet cavity are formed in the partition board along a front oblique direction, and cooling water guided through the flow guide holes forms an eddy in the water outlet cavity. According to the coil pipe cooling type burner, the cooling water cavity is formed in the head of the burner body, cooling water can directly enter the head of the burner body, and an indirect cooling manner is changed into a direct cooling manner, so that the situation that the head of a traditional burner is damaged due to late heat conduction is effectively avoided, and the service life of the burner is prolonged.

Description

technical field [0001] The invention relates to a burner, in particular to a coil cooling burner applied to a BGL gasification furnace. Background technique [0002] In the BGL gasifier, lump coal enters the pressurized gasifier through a lock hopper on top of the coal bed, during which time a slagging agent is added along with the coal. As the coal moves from top to bottom in the gasifier against the upward air flow, it is dried, devolatilized, gasified, and finally combusted. At the base of the gasifier, nozzles inject a mixture of water vapor and oxygen into the combustion zone, where the oxygen reacts with the remaining coke to release high heat with a temperature above 2000°C. This high temperature is sufficient to melt the ash and provide heat to support the gasification reaction. The liquid ash is first discharged into the collection pool at the bottom of the furnace, and then automatically discharged into the water cooling device. The ash forms an odorless, non-pe...

AI Technical Summary

Problems solved by technology

The problem is that, due to space constraints, the cooling pipe cannot enter the high-temperature head, that is, part A in the figure, and can only rely on the heat conduction part to take the high-temperature heat out of the head, and then transfer it to the cooling pipe to take the heat out, causing the head to It is often damaged, and the head needs to be surfacing and repaired once a month or so, which will affect the burner operation cycle

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