Optimization of hydrogen networks with constraints on hydrogen concentration and pure hydrogen load considered

Chemical Engineering Research and Design, Available online 30 December 2011, In Press, Accepted Manuscript 

Optimization of hydrogen networks with constraints on hydrogen concentration and pure hydrogen load considered

Sidong Wu^a,

Guilian Liu^a,

Zemiao Yu^a,

Xiao Feng^b,

Yongbiao Liu^a,

Chun Deng^c

^a Department of Chemical Engineering, Xi’an Jiaotong University, Xi’an 710049, China

^b College of Chemical Engineering, China University of Petroleum, Beijing 102249, China

^c State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

Abstract

Develops a mathematical model of a hydrogen network to minimize the total exergy consumption of the hydrogen utility and compressor work.

The constraint on the hydrogen to oil ratio of hydrogen consuming reactor is represented by that on pure hydrogen load of each sink. Rather than reducing the hydrogen concentration and pure hydrogen load to the minimum directly, all possible combinations are considered.  Optimal flow rate of each sink is taken as a variable in the model. Matching flow rate constraint is introduced to remove the source-sink match with small flow rate. The method can be applied to target the minimum utility consumption of systems with any number of impurities.

Full Text Source (Subscription or Fee): http://www.sciencedirect.com/science/article/pii/S0263876211004874