A method and system for self-adaptive adjustment of coal combustion in a lime kiln

Abstract

The invention discloses an adaptive regulation method and system for lime kiln fire coal. The adaptive regulation method comprises the following steps: S1: monitoring the coal dust flow of a total pipeline and the coal dust flow of each branch in a distributor; S2: dividing each branch in the distributor into a branch set A and a branch set B, and initializing the branch set A and the branch set B; S3: dynamically searching the maximum value Qmax of the coal dust flow of each branch in the branch set A, and recording the number k of the branch corresponding to the maximum value Qmax; S4: synchronously lowering the coal dust flow Qb of each branch in the branch set B to enable the coal dust flow Qak of the branch of which the number is k to be increased until Qak is equal to Qb; S5: movingthe branch of which the number is k to the branch set B from the branch set A; S6: circulating S3 to S5, and finishing an adaptive regulation process until the coal dust flows of all branches in the distributor are equal. By use of the adaptive regulation method, the problem of uneven coal dust distribution can be found and eliminated in time so as to realize the accurate regulation and control oftemperature in the kiln.

Description

technical field [0001] The present application relates to the field of lime kiln technology, in particular to a method and system for adaptively adjusting coal combustion in a lime kiln. Background technique [0002] Lime kiln is a mechanical shaft kiln that calcines limestone at high temperature in the kiln chamber to produce industrial quicklime. The reaction of limestone calcination and decomposition to generate quicklime and carbon dioxide is a typical endothermic reaction, which requires the absorption of a large amount of heat. In order to ensure the smooth progress of the limestone decomposition reaction, it is generally necessary to heat the limestone to 1100°C in the lime kiln. If the temperature is too high, the quicklime on the surface of the material will be over-melted and crystallized, reducing the activation degree of the product; if the temperature is too low, the core of the material will not be completely decomposed. , reduce the calcium oxide content of t...

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Problems solved by technology

[0006] This application provides an adaptive adjustment method and system for lime kiln coal combustion to solve the problem that the prior art cannot accurately control the uniform distribution of coal powder in the lime kiln

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