Combustion method and device for pulverized coal in upper combustion chamber of sleeve kiln

Abstract

The invention discloses a coal powder combustion method and device of an upper combustion chamber of a sleeve kiln. The coal powder combustion method and device are characterized in that a nozzle coal powder injection pipeline and a nozzle combustion supporting air channel are arranged on a combustion chamber panel; the outlet end of the nozzle coal powder injection pipeline extends into the tail end of an upper combustion chamber, so that coal powder enters the sleeve kiln through the nozzle coal powder injection pipeline; combustion supporting air enters the sleeve kiln through the nozzle combustion supporting air channel to complement combustion supporting air; the combustion support of the coal powder is realized by the combustion supporting air; and the coal powder is combusted at the tail end of the upper combustion chamber. According to the coal powder combustion method and device, disclosed by the invention, the nozzle coal powder injection pipeline extends into the tail end of the combustion chamber, so that when the coal powder is combusted, whole flame does not exist in the combustion chamber; ash residues generated when the coal powder is combusted, enter a material layer of the sleeve kiln, move downwards along with materials and are discharged out of the kiln, so that slags cannot be generated in the combustion chamber, the problem that the slags are generated on inner walls of the upper combustion chamber of the sleeve kiln is solved, the workload for removing slags during sleeve kiln production is greatly reduced, and the continuous and stable operation of production is guaranteed.

Description

technical field [0001] The invention relates to the technical field of fuel combustion in a sleeve kiln, in particular to a pulverized coal combustion method and device in an upper combustion chamber of a sleeve kiln. Background technique [0002] With the gradual increase in the use of domestic gas resources, the production cost of sleeve kilns using gas has gradually increased, and the use of pulverized coal as an alternative fuel will greatly reduce the cost, so coal-injected sleeve kilns have gradually emerged. However, when pulverized coal is used in production, the problem of slagging in the combustion chamber always affects the normal production, especially in the upper combustion chamber, because of its small internal space, once slagging is difficult to clean, it will have a great impact on continuous normal production. Contents of the invention [0003] Purpose of the invention: The purpose of the invention is to provide a pulverized coal combustion method and de...

AI Technical Summary

Problems solved by technology

However, when pulverized coal is used for production, the problem of slagging in the combustion chamber always affects the normal production, especially in the upper combustion chamber, because of its small internal space, once slagging is difficult to clean, it will have a great impact on continuous normal production

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