化工装置反应能量系统的传递描述  

Exergy transfer description of reaction system for chemical engineering devices

作　　者：项新耀 JiKun 成庆林[1] 

机构地区：[1]大庆石油学院分院,河北秦皇岛066004 [2]Cool 168 Ltd.,Auckland 1007,New Zealand

出　　处：《化工学报》2007年第9期2178-2182,共5页CIESC Journal

基　　金：国家重点基础研究发展计划项目(G2000026307)~~

摘　　要：对反应(能量)系统的描述,焓分析法单讲能的量的利用,分析法只作静态描述,只有传递法可作动态描述。运用传递理论分析,反应系统具有化学转换元在系统中起主导作用,各输元皆以反应高温源为公共火用源,呈放射型并联结构的特点。据此建立的反应系统通用传递模型——化学转换元与输元并联群相串联的串-并联复合结构模型,清楚地显示了模型的结构特点和基本特征。基于反应系统化学平衡、平衡方程和传递学原理建立的系统传递方程,揭示了系统中计量和过量反应物、生成物,以及杂质等各项流变化率的性质及其相互转换或传递的数量关系,由此可获得对反应系统传递机理的清晰描述,进而可以作反应系统的传递计算和传递分析。To describe the chemical reaction system （CRS）, enthalpy analysis expresses merely the quantitative energy utilization, exergy analysis is only the static description of energy activities, while the exergy transfer approach can perform the dynamic description for CRS. Some reaction system characteristics were analysed and obtained by using exergy transfer theory. The transform unit of chemical exergy acts as a leading role in the whole CRS, the reaction exergy resource with a high temperature is a common exergy resource for all exergy transport units, which belong to the parallel connection frame of radiation type. In view of the above, the exergy transfer model which clearly displays the formation characteristics and basic features of general exergy transfer model of CRS was established. It is a seriesparallel connection composite model, consisting of a chemical exergy transform unit with exergy transport units group. Based on the chemical equilibrium and exergy balance equations and exergy transfer theory, the exergy transfer equation was established. It reveals the properties of exergy fluid rates for reactants, reaction products, impurities, etc. , and the quantitative connection that these parameters transform into and transfer with each other. Accordingly, the quantitative and qualitative description of exergy transfer mechanism may be obtained. Proceeding to the next step, the exergy transfer analysis and calculation for CRS could be made.

关 键 词：化工装置 化学反应 [火用]传递 [火用]传递模型 

分 类 号：TK123[动力工程及工程热物理—工程热物理]