Process for increasing hydrogen content of synthesis gas

A process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio, R, defined as R=(H2−CO2)/(CO+CO2) 0.6 and a steam to carbon monoxide ratio 1.8, includes the steps of (i) adju...

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Bibliographic Details
Main Authors ABBOTT PETER EDWARD JAMES, BEAVIS RICHARD JAMES, COMBES GARY BEVAN
Format Patent
LanguageEnglish
Published 24.11.2015
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A process for increasing the hydrogen content of a synthesis gas containing one or more sulphur compounds, the synthesis gas including hydrogen, carbon oxides and steam, and having a ratio, R, defined as R=(H2−CO2)/(CO+CO2) 0.6 and a steam to carbon monoxide ratio 1.8, includes the steps of (i) adjusting the synthesis gas temperature, (ii) passing the temperature-adjusted synthesis gas through an adiabatic pre-shift vessel containing a bed of sulphur-tolerant water-gas shift catalyst at a space velocity 12,500 hour−1 to form a pre-shifted gas stream, and (iii) subjecting at least a portion of the pre-shifted gas stream to one or more further stages of water-gas shift.
Bibliography:Application Number: US201214355628