Two-step counter-current extraction purification method for rhodium/diphosphite catalyst

The invention discloses a two-step counter-current extraction purification method for rhodium/diphosphite catalyst. The method includes the following steps: an extraction apparatus composed of a first extraction column and a second extraction column is adopted to carry out two-step counter-current e...

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Bibliographische Detailangaben
Hauptverfasser:	CHAI WENZHENG, HOU ZHANGGUI, ZHANG HUI, WU QING, WANG KAI, FU SONGBAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY 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
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Beschreibung
Zusammenfassung:	The invention discloses a two-step counter-current extraction purification method for rhodium/diphosphite catalyst. The method includes the following steps: an extraction apparatus composed of a first extraction column and a second extraction column is adopted to carry out two-step counter-current extraction on rhodium/diphosphite catalyst solution, realizing purification; the first extraction column comprises a first extraction section, a first upper settling section connected to the top of the first extraction section, and a first lower settling section connected to the bottom of the first extraction section; the second extraction column comprises a second extraction section, a second upper settling section connected to the top of the second extraction section, and a second lower settling section connected to the bottom of the second extraction section; and the first upper settling section is connected to the second extraction section. The method disclosed by the invention can remove the acid substance prod