A detection method of coal quality characteristics

Abstract

The invention provides a method for detecting coal property characteristics. The method comprises the following steps of: 1, performing industrial measurement on fire coal, thus obtaining as received basis moisture, air dry basis moisture, air dry basis fixed carbon, air dry basis ash content, air dry basis volatile component and as received basis lower heating value; 2, calculating as received basis fixed carbon, as received basis ash content and as received basis volatile component of the fire coal; 3, calculating as received basis fixed carbon heating value; 4, calculating as received basis volatile component heating value; 5, calculating the ratio of the as received basis fixed carbon heating value to the as received basis volatile component heating value, and recording the ratio as Kq; and 6, comparing the size of the Kq, wherein the larger the Kq is, the lower the combustion stability is. The heating value of the volatile component can be calculated according to the fixed carbon content and the lower heating value obtained through analysis, the ratio Kq of the fixed carbon heating value to the volatile component heating value is obtained, the ratio serves as the index of judging the combustion stability of the fire coal, and the combustion stability conditions of different coal types can be compared.

Description

technical field [0001] The invention specifically discloses a detection method for coal quality characteristics, and particularly relates to a detection method for the ignition stability of coal quality. 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 us...

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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