Method for raising temperature in coke dry quenching furnace

Abstract

The invention discloses a method for raising the temperature in a coke dry quenching furnace, which comprises the following steps: a, filling cold coke into the coke dry quenching furnace, pilling the cold coke in a concave shape and allowing the cold coke to cover a central hood; b, filling red-hot coke into the coke dry quenching furnace, and allowing the red-hot coke to cover the cold coke in the step a; c, filling cold coke into the coke dry quenching furnace, allowing the cold coke to cover the red-hot coke in the step b and drying the coke dry quenching furnace; d, introducing inert gas into the coke dry quenching furnace and drying the coke dry quenching furnace with warm wind; and e, directly filling coke into the coke dry quenching furnace. In the step e, the red-hot coke is filled into the coke dry quenching furnace first and covers the cold coke in the step c, and then the cold coke is filled into the coke dry quenching furnace and covers the red-hot coke in the step e. And when the method disclosed by the invention is used, the furnace drying quality and construction period are both guaranteed.

Description

technical field [0001] The invention relates to a method for raising the temperature of a CDQ coke oven, more specifically, relates to a method for quickly, safely and orderly raising the temperature of a CDQ coke oven by throwing red coke into the oven. Background technique [0002] Compared with the traditional wet coke quenching technology, dry coke quenching technology can improve coke M40, M10, SRI, GSR and coke particle size and other indicators, improve the blast furnace smelting capacity, and reduce phenol cyanide and dust emissions, control environmental pollution , saving energy, improving economic benefits and other aspects have played a huge role, so in recent years, the application of CDQ technology in the coking industry has developed rapidly. [0003] Due to the production characteristics of the iron and steel industry, the CDQ system used in the iron and steel industry requires continuous operation, and only one overhaul is required throughout the year. Afte...

AI Technical Summary

Problems solved by technology

The gas oven heating method burns the gas in the CDQ oven and utilizes the heat generated by the gas combustion to increase the temperature and pressure of the CDQ oven. The heating process takes a long time, accounting for about half of the annual maintenance period of the CDQ system, so the heating method of the gas oven generally cannot meet the construction period requirements

In addition, in the existing red coke feeding method, red coke is put into the CDQ oven from the opening at the top of the CDQ oven to increase the temperature and pressure of the CDQ oven, although this heating method may not be related to CDQ. The furnace body is directly in contact with the CDQ system and can quickly heat up and put into production. However, this heating method is only suitable for annual repairs with a small amount of refractory repairs for the CDQ system.

[0005] For the large-area replacement and repair of refractory materials in the CDQ system and / or other situations, neither of the above two heating methods can cope well. Therefore, the existing red coke heating method must be optimized to achieve The goal of both furnace quality and construction period

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