Afterheat utilization device of sintering machine

Abstract

The invention relates to an afterheat utilization device, in particular to an afterheat utilization device of a sintering machine, and belongs to the technical field of machinery. The afterheat utilization device structurally comprises an afterheat boiler and an annular cooler communicated with the afterheat boiler. The sintering machine afterheat utilization device has an improvement point that a compensation hot air furnace is also arranged between the afterheat boiler and the annular cooler, the compensation hot air furnace is provided with an air inlet end and two air outlet ends, the air inlet end is respectively communicated with a liquefied gas pipe, a coal gas pipe and a combustion support air pipe, one air outlet end is communicated with the afterheat boiler through a corresponding air outlet pipeline, and the other air outlet end is communicated with a high-temperature smoke gas pipeline through the corresponding air outlet pipeline. The sintering machine afterheat utilization device has the beneficial effects that the economic benefits are obviously improved, the operation of a unit is stabilized, and the service life of the unit is prolonged.

Description

technical field [0001] The invention relates to a waste heat utilization device, in particular to a sintering machine waste heat utilization device, which belongs to [0002] in the field of mechanical technology. Background technique [0003] Existing 300m 2 Half of the sintering machine will be equipped with a set of waste heat utilization device. The principle is to use the hot air in the first and second stages of the annular cooler process to generate steam power through the waste heat boiler, and the flue gas temperature in the first stage (high temperature section) of the annular cooler process is about 350- 400 (450max) ℃, the flue gas temperature of the second stage (medium temperature section) of the annular cooler process is about 250-300°C, because the flue gas temperature and flow rate of the annular cooler fluctuate greatly, making it difficult for the waste heat boiler to continue normal production, resulting in The operating rate of the steam turbine ge...

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Problems solved by technology

[0003] Existing 300m 2 Half of the sintering machine will be equipped with a set of waste heat utilization device. The principle is to use the hot air in the first and second stages of the annular cooler process to generate steam to generate electricity through the waste heat boiler, and the flue gas temperature in the first stage (high temperature section) of the annular cooler process is about 350- 400 (450max) ℃, the flue gas temperature of the second stage (medium temperature section) of the annular cooler process is about 250-300°C, because the flue gas temperature and flow rate of the annular cooler fluctuate greatly, making it difficult for the waste heat boiler to continue normal production, resulting in The operating rate of the steam turbine generator set cannot meet the stable requirements (not less than 92%), and there is an urgent need for a device that can meet the normal and stable production of the waste heat boiler

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