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A thermochemical concept-based equation to estimate waste combustion enthalpy from elemental composition

机译：基于热化学概念的方程，用于从元素组成估算废物燃烧焓

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摘要

Waste combustion is an interesting alternative for waste management and energy recovery. Knowledge of the waste higher heating value (HHV) is important for judging it's worth as fuel. This work introduces a new equation, based on thermochemical concepts, to calculate HHV from elemental composition. This equation is expressed in terms of mass percentages on a dry basis of carbon (percent C), hydrogen (percent H), oxygen (percent O), nitrogen (percent N), and sulfur (percent S); the HHV is computed in MJ/kg. The equation is as follows: HHV velence (1 - (percent H_2O/100))(- 0.3708(percent C) - 1.1124(percent H) + 0.1391(percent O) - 0.3178(percent N) - 0.1391(percent S)). The thermochemical concept on which this expression is based involves a wide applicability. This equation neglects the inorganic carbon, hence it is not very adequate when there is a significant concentration of it. The predictions from this approach were contrasted against those proceeding from equations currently used in combustion technology, and also against bomb calorimeter data. The new equation is clearly competitive with respect to other formulations, and it can be very helpful for presenting a waste HHV value based on different derivation suppositions.
机译：废物燃烧是废物管理和能量回收的有趣替代方法。了解废物较高的热值（HHV）对于判断其作为燃料的价值非常重要。这项工作引入了一个基于热化学概念的新方程，可以根据元素组成计算HHV。该方程式以碳（％C），氢（H％），氧（O％），氮（N％）和硫（S％）的质量百分比表示。 HHV以MJ / kg计算。公式如下：HHV速度（1--（H_2O / 100％）（-0.3708（C％）-1.1124（H％）+ 0.1391（O％）-0.3178（N％）-0.1391（S％）） 。该表达式所基于的热化学概念涉及广泛的适用性。该方程式忽略了无机碳，因此当其浓度很高时，它不是很充分。这种方法的预测与燃烧技术中目前使用的方程式所得出的预测相反，也与炸弹量热计数据相反。新公式显然相对于其他公式具有竞争力，并且对于基于不同派生假设的废物HHV值表示非常有帮助。

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