Rich oxygen supply system of dry rotary kiln cement production

Abstract

The invention provides a rich oxygen supply system of dry rotary kiln cement production. The system comprises a VPSA oxygen production unit, coal air fans, multi-air-way coal powder burners and clean air fans; the VPSA oxygen production unit is connected with a main pipe; the main pipe is provided with a branch pipe 1 and a branch pipe 2 respectively connected with coal air fan sucking ports of a rotary kiln and a decomposition furnace; coal air fans of the rotary kiln and the decomposition furnace are respectively connected with respective multi-air-way coal powder burners; the main pipe is provided with a branch pipe 3 and a branch pipe 4 respectively connected with clean air fan sucking ports of the rotary kiln and the decomposition furnace; and the clean air fans of the rotary kiln and the decomposition furnace are respectively connected with respective multi-air-way coal powder burners. The rich oxygen supply system satisfies rich oxygen combustion assisting demands in burning of dry rotary kiln cement clinkers without changing any traditional cement production equipment, and has the characteristics of low equipment investment, low operation energy consumption and obvious energy saving benefit.

Description

technical field [0001] The invention relates to the technical field of dry-process cement production, in particular to an oxygen-enriched supply system for dry-process rotary kiln cement production. Background technique [0002] For a long time, the cement industry has been an important basic material industry for my country's national economic construction. In recent years, with the rapid development of my country's economy, its industry scale has also been greatly expanded. Although enterprises in the industry have undergone many mergers and integrations, they still have There are nearly 3,000 enterprises above designated size, and cement output has ranked first in the world for many years. At the same time, since the cement industry is also a major high-energy consumption and high-emission industry in my country, it is the focus and difficulty of energy conservation and emission reduction in the industrial field. , further improving cement production technology, increasing...

AI Technical Summary

Problems solved by technology

However, this technical solution has the following technical defects: all oxygen-enriched addition methods are basically added on the side of the original air duct. Adding a booster fan at the output end of the source increases the investment and operating costs; it is difficult to fully mix the oxygen-enriched air with the air in the original pipe by adding it on the side of the second pipe, and it is difficult to ensure the stability of the operation; in addition, the clinker cooling process is used The generated high-temperature cooling air is added with oxygen-enriched air to form high-temperature oxygen-enriched air, and this high-temperature oxygen-enriched air is used as the primary air for pulverized coal transportation. This technical measure also has a large safety hazard

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