A METHOD FOR HYDROGENATION OF ALDEHYDES

• Main Authors: KIM, DAE CHUL, EOM, SUNG SHIK, HONG, MOO HO, KO, DONG HYUN, KWON, O HAK
• Format: Patent
• Language: English; Korean
• Published: 05.12.2013
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention relates to a hydrogenation method for aldehydes and, more specifically to a hydrogenation method for aldehydes comprising: a first step of introducing hydroformylation reaction products containing aldehydes, and hydrogen gas into a hydriding reactor, wherein hydrogenization catalysts are fixed, and measuring aldehyde conversion ratio value calculated from the inflow amount and reduction amount of the aldehyde while performing a hydriding reaction; a second step of cutting the inflow of hydroformylation reaction products off at a point when the aldehyde conversion ratio value is less than 99.5%, and reproduces the hydrogenization catalysts by supplying hydrogen gas; and a third step of reintroducing hydroformylation reaction products containing aldehydes, and hydrogen gas under the reproduced hydrogenization catalysts and continuously performing the hydrogenation reaction. The present invention improves hydrogenation process yield and effectively reproduces poisoned hydrogenization catalysts with a simple process.