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L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Air Liquide Global E&c Solutions Germany Gmbh

Sandra Jensen

Martin Rothaemel

Sharon Corbet

Alfred Gubrinski

Hermann Bach

Harald Koempel

Gerhard Birke

Herrmann Bach

The invention relates to an absorber column and to the use thereof for separation of unwanted, especially acidic, gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas by absorption with an absorbent, especially under low load states of the absorber column in relation to the synthesis gas velocity. According to the invention, a defined concentration of carbon dioxide in the clean synthesis gas is established by mixing at least a portion of the absorbent regenerated by flash regeneration with the absorbent regenerated by means of hot regeneration prior to the recycling thereof into the absorber column.

Absorber column and process for cleaning crude synthesis gas

Process for removing oxygen-containing organic compounds from mixtures of hydrocarbon compounds, in which a liquid phase () containing hydrocarbons and oxygenates is charged to a first column (), a light fraction is separated as top product () by distillation, and that a heavier C4+ fraction is removed from the bottom, the light fraction () and a gaseous mixture of hydrocarbons and oxygenates () is charged to a second column (), and separated into a light and a heavy hydrocarbon fraction distillation, and an additional solvent () is supplied to the upper part of the second column (), which dissolves the oxygenates and, the solvent and oxygenates being discharged as bottom product () and a hydrocarbon product (), which is free from oxygenates leaves the top of the column (). The solvent optionally is wholly or partly regenerated and recirculated to the extractive distillation column.

Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds

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Frankfurt am Main, Germany

Sandra Jensen