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New Clean Coal Cycle Optimized Using Pinch Technology
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Date
1990-06
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Energy Systems Laboratory (http://esl.eslwin.tamu.edu)
Abstract
High thermal efficiency and low
levels of environmental emissions are
priorities in the design of modern power
plants. The M. W. Kellogg Company under
funding from the Department of Energy, has
recently completed a study of a new coal fueled
system that would achieve these
objectives. During the course of study,
Pinch Technology was used to assist in the
optimization of the process.
The "hybrid cycle" is a second
generation PFBC system, employing both
gasification and combustion processes.
High velocity transport reaction
technology, developed originally for Fluid
Catalytic Cracking plants, is used in the
coal conversion steps; and pulverized
limestone is circulated with the coal to
capture the sulfur that is released during
this process. Both gas turbines and steam
turbines are used for power generation.
Results from the study indicate that
thermal efficiencies in excess of 45% are
attainable, with very low NOx and SOx emissions and attractive capital costs.
In this paper the hybrid cycle is
described and key aspects of this new
technology are explained. The benefits of
using Pinch Technology as an optimization
tool in this project are also presented.
Description
Keywords
PFBC System, Hybrid Cycle, Pinch Technology