An intelligent control oxygen-enriched firing system and method for a kiln

Abstract

The invention discloses an intelligent control oxygen-enriched firing system for a kiln. The intelligent control oxygen-enriched firing system for the kiln comprises an oxygen-enriched system, an oxygen-enriched burner, a temperature measurement and analysis system, a firing expert optimization system and an intelligent control system. According to the intelligent control oxygen-enriched firing system for the kiln, the oxygen enrichment is produced and provided by a special oxygen-enriched system; the novel oxygen-enriched burner is adopted; according to different coal powder types, coal powder amount and grinding granularity of a kiln system, the shapes and temperature distribution of flames are obtained by the accurate temperature measurement and analysis system, all on-site actual thermal parameters and on-site states of the kiln are combined, the system analysis and the prediction and judgment are carried out by the firing expert optimization system, and the intelligent regulationand dynamic matching of the special oxygen-enriched system are controlled by the intelligent control system, so that the optimal operation state of the firing system of the kiln is kept, the efficientand stable burning of coal powder in the oxygen-enriched burner is realized, the consumption of the coal powder is reduced, the quality of burned materials is improved, the generation and emission ofNOx are effectively reduced, meanwhile, the fluctuation of the kiln system caused by the debugging experience and level difference of operators is reduced, and the normal and stable operation of thekiln system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of oxygen-enriched combustion, in particular to an intelligent control oxygen-enriched firing system and method for a kiln. Background technique [0002] With the overall decline in the growth rate of domestic fixed asset investment, the excess domestic cement production capacity is obvious. Under the background of supply-side reform and capacity reduction, the number of new cement production lines has decreased year by year. Vigorously developing new technologies for dry-process cement technology, new low-carbon cement production technologies, advanced energy-saving and emission-reduction technologies for cement production, and complete sets of technologies and equipment for co-processing of cement kilns has become a major trend in the development of the cement industry. [0003] In the cement production line, the proportion of coal used by the pulverized coal burner at the kiln head of the rotary kiln is b...

AI Technical Summary

Problems solved by technology

Different kiln systems, types of pulverized coal and particle size after grinding, control of various process parameters of the burner, and different debugging experience and technical levels of operators will greatly affect the stability of the thermal system of the kiln firing system. , resulting in insufficient pulverized coal combustion, increased coal consumption, reduced product quality, and increased NOx emissions from flue gas

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