Garbage incinerator bed combination calculation method

Abstract

The invention relates to a garbage incinerator bed part calculation method. The method comprises the following steps of: setting that an overall process of the whole garbage combustion is formed by awater evaporation model, a volatile matter separation model, a volatile combustion model and a fixed carbon combustion model according to a combustion physicochemical process; and deducing a control equation, a discrete process and a solution algorithm according to a physicochemical reaction equation, a corresponding reaction speed equation and computational fluid mechanics. According to the method, modeling is carried out on a gas phase part and a solid phase part of a bed on the basis of a CFD theory, the whole conversion process from the solid phase to the gas phase is simulated, so that anobtained model has more theoretical basis than traditional experience models; compared with other bed models, the model considers more fluid parameter factors, has more and more original adjustable initial parameters, and has universality; boundary conditions are set to be closer to physical boundaries, so that the calculated numerical value results are more credible; and the method refers to more chemical reactions and physical processes, and influences of raw material components and elements are considered to the greatest extent, so that the calculation result is more accurate.

Description

Technical field [0001] The invention belongs to the field of solid waste energy calculation, specifically including physical process description, chemical equation selection, control equation setting, algorithm design and programming calculation. It can be applied to the calculation of incineration conditions (temperature, concentration of various substances, etc.) in garbage incinerators. Background technique [0002] With the advancement of urbanization and rapid economic development, my country's municipal solid waste (Municipal Solid Waste-MSW) has grown rapidly. In 2016, the output of domestic waste reached 191 million tons, and the cumulative stock of municipal solid waste nationwide has reached more than 7 billion tons. Two-thirds of cities are trapped in the dilemma of "garbage siege". Environmental pollution problems caused by urban domestic waste are becoming increasingly serious. Efficient processing and safe utilization of resources are urgent. [0003] At presen...

AI Technical Summary

Problems solved by technology

At present, most of the calculations for the bed layer are based on empirical models or empirical values, which are approximate estimates with large errors, and inaccurate results in the subsequent calculation process, so it is difficult to accurately calculate the incineration status in the incinerator

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