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The
refinery hydrogen distribution system usually comprises a set of hydrogen main
headers (pipelines) working at different pressures and hydrogen purities. Many
makeup and recycle compressors drive the hydrogen through this complex network
of consumer units, on-purpose production units, and platformers (see Figure
1a). On-purpose hydrogen plants generate high purity hydrogen at different
costs while net production units are platformers generating low purity hydrogen
as a byproduct. Hydrogen streams with different
purities, pressures and flow rates coming from make-up hydrogen plants and
platformers are supplied to multiple consumer units...
