The method of directing the use of coal for specific kiln blending in the cement industry

Abstract

The invention discloses a method for guiding coal blending and using of a specific kiln in the cement industry. The method comprises the following steps: preparing a plurality of batches of coal, and detecting two characteristic parameters, namely effective burning time and exothermic intensity, of each batch of coal outside a furnace; after in-furnace burning production of each batch of coal, calculating the standard coal consumption of each batch of coal relative to unit cement clinker; analyzing the standard coal consumption and the two characteristic parameters of each batch of coal by the use of a data analysis program, as for a specific cement production line and the specific kiln, establishing the relationship between different standard coal consumption and the two characteristic parameters, and finally, selecting and controlling the standard coal consumption of coal through the adjustment of the two characteristic parameters outside the furnace. According to the method, the exothermic intensity and the effective burning time are taken as the characteristic parameters for evaluating the coal burning characteristics, the definite coal characteristic indication range suitable for various cement industrial kilns can be discovered through determination of the parameters, and control commands are provided for blending use of coal during production.

Description

technical field [0001] The invention belongs to the field of cement industry, and in particular relates to a method for instructing specific kilns to use coal for coal blending in the cement industry. Background technique [0002] In the new cement production process, the pulverized coal in the calciner burns and releases heat, and the carbonate absorbs heat and decomposes. The combustion status of the pulverized coal affects the heating capacity of the calciner and the clinker output of the cement kiln. [0003] Today's energy is increasingly tight, coal resources are increasingly scarce, high-grade coal is close to depletion, and low-grade coal is widely used in the cement industry. The frequent replacement of coal types and the combination of different coal types have brought many problems to production operations. , such as crust blockage in the calciner, high coal consumption, and low clinker output. [0004] The solution to these problems firstly depends on the unders...

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Problems solved by technology

[0008] Various cement industry research institutions have proposed a comprehensive combustion characteristic index S value, the physical meaning is not clear, and it has no relationship with the actual coal combustion behavior in cement industrial kilns; it does not meet the needs of enterprises to define the types and characteristics of coal applicable to cement industrial kilns , not to mention quantifying coal characteristic indicators to guide coal procurement and coal application

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