SYNGAS PURIFICATION PROCESS

• Main Author: BEC, REMI LE
• Format: Patent
• Language: English; Spanish
• Published: 03.09.2004
• Edition: 7
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The present invention relates to a process for purifying a syngas of the CO/H2 or N2/H2 type, which consists in removing CO2 and possibly other gaseous impurities (water, etc.) before the gas undergoes a cryogenic process. These impurities are adsorbed by the gas stream to be purified passing over an NaLSX-type zeolite and then desorbed during a regeneration step which may be performed by raising the temperature (TSA) and/or reducing the pressure (PSA or VSA). La presente invencion se refiere a un procedimiento de purificacion de gas de sintesis de tipo CO/H2, o N2/H2, que consiste en eliminar CO2 y eventualmente otras impurezas gaseosas (agua, etc.) antes del paso a un procedimiento criogenico. Estas impurezas son adsorbidas por el paso del flujo gaseoso que se trata de purificar por una zeolita de tipo NaLSX, luego desorbidas durante una etapa de regeneracion que puede realizarse por elevacion de la temperatura (TSA) y/o por disminucion de la presion (PSA o VSA).