Application of Emergy Algebra to Split Structure of Chemical Engineering System

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Application of Emergy Algebra to Split Structure of Chemical Engineering System

更新时间：2025-07-09

- Application of Emergy Algebra to Split Structure of Chemical Engineering System
- Vol. 46, Issue 12, Pages: 98-102(2012)
- 作者机构：
  
  西安交通大学化学工程与技术学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ021.9
- Online First：10 December 2012，
  
  Published：2012
- 稿件说明：
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Application of Emergy Algebra to Split Structure of Chemical Engineering System[J]. 2012, 46(12): 98-102.
DOI：

Application of Emergy Algebra to Split Structure of Chemical Engineering System[J]. 2012, 46(12): 98-102. DOI：

摘要

为了克服计算化工系统中分流结构的能量流时容易产生不遵守能值代数的全额继承问题

将分流结构区分为分流绕行结构和含分流多产品结构

同时分析了这两种结构容易违背全额继承特性的原因.通过扩展对能值代数的解读

提出分流绕行结构中的能量流在系统内部重遇时各能量流需要按照其火用值进行叠加

含分流多产品结构中各产品的能量各不相等

但各产品能量之和等于系统总的能量投入.焦化废水处理工艺案例中

分流后的两股废水(能值为0.2×10

和0.8×10

)在系统内交汇时需按其能值进行叠加

处理后分别进行回用(2.1×10

)、灌溉(1.5×10

)和排放(2.6×10

)的废水能量等于系统总的能量投入(6.2×10

Abstract

In emergy algebra

for split structures of chemical systems

values of emergy flows

which violate the total inheritance characteristic

are prone to be miscalculated. To remedy the deficiency

the split structure is divided into split bypass and split multi-product ones to extend the understanding of emergy algebra and to provide different solutions. For the split bypass structure

the energy flows can be added by their exergy when the split flows meet together again. For the split multi-product structure

although the energy of every product gets different

the sum of all products ought to be equal to the energy input of the system. In case study of the process of coking wastewater treatment

two splited wastewater flows(their respective emergy is 0.2×10

and 0.8×10

)can be added by their energy as

they meet together in the system; the values in wastewater used for recycling(2.1×10

)

irrigation(1.5×10

)and emission(2.6×10

)are equal to the total energy input of the system(6.2×10

关键词

Keywords

references

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LAZZARETTO A. A critical comparison between thermoeconomic and emergy analyses algebra[J]. Energy, 2009, 34(12): 2196-2205.

杨平,王彬,石炎福,等. 生物流化床A-A-O工艺处理焦化废水中试研究[J]. 化工学报, 2002, 53(10):1085-1088.

YANG Ping, WANG Bin, SHI Yanfu, et al. Pilot study on treatment of coking plant waste-water in bio-fluidized-bed reactors and A-A-O system[J]. Journal of Chemical Industry and Engineering, 2002, 53(10): 1085-1088.

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