Multiphase flow and chemical reactor thermodynamics for hydrolysis and thermochemical production
Date
2012-08-01
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Abstract
Current techniques of hydrogen production (primarily reformation of fossil fuels) are
unsustainable, releasing CO2 into the atmosphere, as well as consuming limited reserves
of fossil fuels. The copper-chlorine cycle is a promising thermochemical process which
can cost-effectively produce hydrogen with less environmental impact. In this thesis, new
predictive formulations and experimental data are presented to improve the conversion
extent and reaction rates of the hydrolysis reactor in the Cu-Cl cycle. This reactor has
critical implications for the design, operation, and efficiency of the Cu-Cl cycle and
hydrogen production. The relatively high temperature needed to drive the reaction
requires a significant input of thermal energy. This thesis focuses on methods and
analysis to reduce the unreacted steam in the hydrolysis reactor, in order to reduce the
thermal energy input and improve the cycle’s thermal efficiency. A key outcome from
this thesis is the experimental verification of reducing the steam to copper chloride ratio
from 16:1 (past studies) to about 3:1. The results of this thesis provide key new data to
design a more efficient hydrolysis reactor that can be effectively integrated within the
Cu-Cl cycle.
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Keywords
Hydrogen production, Thermofluids, Chemical equilibrium