VERFAHREN ZUM ERHITZEN VON WASSERSTOFF, DER UNTER EINEM DRUCK VON 200 BIS 400 BAR STEHT

VERFAHREN ZUM ERHITZEN VON WASSERSTOFF, DER UNTER EINEM DRUCK VON 200 BIS 400 BAR STEHT

Desulfurized hydrocarbons are reacted with water vapor on catalysts at temperatures of 700 DEG to 1200 DEG C. to form a high-hydrogen product gas, which is separated in a pressure-swing adsorber into purified hydrogen and a separated gas, which contains substantially carbon oxides and methane. The p...

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Bibliographische Detailangaben
Hauptverfasser: STOENNER,HANS-MARTIN, MARSCHNER,FRIEDEMANN
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:Desulfurized hydrocarbons are reacted with water vapor on catalysts at temperatures of 700 DEG to 1200 DEG C. to form a high-hydrogen product gas, which is separated in a pressure-swing adsorber into purified hydrogen and a separated gas, which contains substantially carbon oxides and methane. The purified hydrogen is supplied to a hydrogenating plant, which is operated at temperatures in the range of 250 DEG to 500 DEG C. and pressures of 200 to 400 bars. High-hydrogen gas from the hydrogenating plant flows in a pipeline through a heater and is then recycled to the hydrogenating plant. The heater consists of a fuelfired reheater, in which the separated gas is used as a fuel. The pipeline in which the high-hydrogen gas is recycled between the hydrogenating plant and the heater consists of an alloy steel, in which the carbon is combined in carbides with at least one of the alloying constituents chromium, molybdenum, tungsten or vanadium.