Powder-combustible vortex burner

A technology of swirl burners and burners, which is applied in the direction of burners, burners, and combustion methods for burning powder fuels. It can solve the problems of no ignition device, cumbersome, damage, etc., so as to prolong the service life and have a wide range of applications. , to avoid the effect of ablation

Active Publication Date: 2005-12-21
CHANGZHENG ENG
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  • Abstract
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AI Technical Summary

Problems solved by technology

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 oxygen adopt a direct-current structure to make the combustion flame longer, and the length of the corresponding furnace body is also increased; (3) The burner uses a coil cooling structure, which is very easy to cause damage during disassembly; (4) The burner ignition method adopts The preheating burner heats the refractory bricks in the furnace body, and switches after the furnace temperature reaches the combustion temperature of the coal-water slurry to ignite the coal-water slurry. Coal water slurry with good rheological properties requires coal to be ground into a coal slurry with

Method used

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  • Powder-combustible vortex burner

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Embodiment Construction

[0016] like figure 1 As shown, the center of the burner of the present invention is provided with a primary cooling jacket 3, the center of the primary cooling jacket 3 is inserted into the ignition rod 1, and a flame monitoring device 30 is arranged on the end cover 29 of the primary cooling jacket; and connected to a pipe, which is connected with the inlet 28, and the inlet 28 is connected with the primary air duct 2, and the fuel gas and gasification agent are switched through the valve; the oxidant flows in from the oxidant inlet 6, and is sprayed out after passing through the secondary air duct 8; Out of the cooling jacket 3 is a secondary cooling jacket 7, the outer wall of the secondary cooling jacket 7 is spirally wound with 2 to 5 pulverized coal pipes 20, and the pulverized coal is sprayed out through the pulverized coal pipe swirling flow; the outermost layer of the burner is arranged for tertiary cooling Jacket 13; after the cooling medium enters the channel from t...

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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...

Claims

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Application Information

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IPC IPC(8): F23D1/02
Inventor 王明坤李兵科刘孝弟王军郭进军
Owner CHANGZHENG ENG
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