Coal quality characteristic detection method suitable for storage pulverizing system

Abstract

The invention discloses a coal quality characteristic detection method suitable for a storage pulverizing system. The method comprises the following steps: measuring air-dried moisture, air-dried ash content and air-dried volatile matter content of fire coal by utilizing an automatic industrial analyzer, and calculating air-dried fixed carbon; measuring the bomb calorific value of the fire coal by utilizing a calorimeter; measuring total sulfur by utilizing a sulfur determination device to obtain air-dried sulfur content; calculating the air-dried higher heating value of the fire coal according to the bomb calorific value of the fire coal and the air-dried sulfur content; calculating the calorific value of the air-dried fixed carbon according to the air-dried fixed carbon; calculating the ratio of the calorific value of the air-dried fixed carbon to the calorific value of the air-dried volatile matter content to evaluate combustion stability. The coal quality characteristic detection method is capable of comprehensively evaluating the combustion stability of the fire coal of the storage pulverizing system, and is especially used for judging the condition of the combustion stability when the volatile matter content of the fire coal is close.

Description

technical field [0001] The invention relates to a coal quality characteristic detection method suitable for an intermediate storage pulverizing system. Background technique [0002] In the production process of electric power, energy, building materials, metallurgy and other industries, it is often necessary to use pulverized coal to burn in the boiler to heat water to generate steam to meet the requirements of the production process. The safe and stable combustion of pulverized coal is an important guarantee for the continuous and reliable operation of the boiler. In order to make the quality of coal combustion meet the needs of stable combustion, it is usually required that the volatile content of coal entering the furnace should not be lower than a certain value, otherwise it will lead to unstable combustion and abnormal situations such as boiler fire extinguishing. [0003] At present, the volatile content is widely used as the criterion for judging the ignition stabili...

AI Technical Summary

Problems solved by technology

However, in the practice of boiler operation, it often happens that the volatile content of coal-fired coal meets or approaches the set value while the boiler burns unstable or even goes out, which requires a more comprehensive index to judge the ignition stability of coal-fired

In some cases, the volatile content of coal is similar, but its ignition stability is very different, and the difference cannot be distinguished according to the current detection method of coal quality characteristics.

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