ES8308320A1 - Process for the removal of potassium from used ethylene oxide catalysts - Google Patents

Process for the removal of potassium from used ethylene oxide catalysts

Info

Publication number
ES8308320A1
ES8308320A1 ES514036A ES514036A ES8308320A1 ES 8308320 A1 ES8308320 A1 ES 8308320A1 ES 514036 A ES514036 A ES 514036A ES 514036 A ES514036 A ES 514036A ES 8308320 A1 ES8308320 A1 ES 8308320A1
Authority
ES
Spain
Prior art keywords
catalyst
solvent
ethylene oxide
alkali metal
reactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES514036A
Other languages
Spanish (es)
Other versions
ES514036A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORTHERN PETRO CHEM CO
Original Assignee
NORTHERN PETRO CHEM CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NORTHERN PETRO CHEM CO filed Critical NORTHERN PETRO CHEM CO
Publication of ES514036A0 publication Critical patent/ES514036A0/en
Publication of ES8308320A1 publication Critical patent/ES8308320A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D301/00—Preparation of oxiranes
    • C07D301/02—Synthesis of the oxirane ring
    • C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
    • C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
    • C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)
  • Epoxy Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

An in-reactor method for removing alkali metal-containing impurities from supported silver catalysts which have been used for the direct oxidation of ethylene oxide comprises: a) contacting the catalyst in the reactor with a nonaqueous solvent for from 0.1 to 10 hours b) removing the used solvent and the alkali metal-containing impurities contained therein c) causing fresh solvent to flow through the reactor for sufficient time to reduce the alkali metal concentration in the effluent to 50 parts per million or less d) draining the solvent from the catalyst and e) drying the catalyst. The washed catalyst may be impregnated with a C3 and/or Rb component.
ES514036A 1981-07-17 1982-07-15 Process for the removal of potassium from used ethylene oxide catalysts Expired ES8308320A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28420881A 1981-07-17 1981-07-17

Publications (2)

Publication Number Publication Date
ES514036A0 ES514036A0 (en) 1983-08-16
ES8308320A1 true ES8308320A1 (en) 1983-08-16

Family

ID=23089301

Family Applications (1)

Application Number Title Priority Date Filing Date
ES514036A Expired ES8308320A1 (en) 1981-07-17 1982-07-15 Process for the removal of potassium from used ethylene oxide catalysts

Country Status (8)

Country Link
JP (1) JPS5824349A (en)
AU (1) AU8600482A (en)
DE (1) DE3226896A1 (en)
ES (1) ES8308320A1 (en)
FR (1) FR2509630B1 (en)
GB (1) GB2101495B (en)
IT (1) IT1157219B (en)
SE (1) SE8203955L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391735A (en) * 1981-07-17 1983-07-05 Internorth, Inc. Cleaning and regenerating ethylene oxide catalysts
JPS6174545U (en) * 1984-10-23 1986-05-20
JPH0118599Y2 (en) * 1985-02-06 1989-05-31
GB9605175D0 (en) * 1996-03-12 1996-05-15 Entertainment Uk Ltd Improvements in or relating to securing apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2351661A1 (en) * 1973-10-15 1975-04-24 Huels Chemische Werke Ag Recovery of silver oxide and catalyst carrier - from spent silver catalysts used for mfr. of ethylene oxide
DE2636680C3 (en) * 1976-08-14 1979-04-05 Hoechst Ag, 6000 Frankfurt Process for improving the effectiveness of supported silver catalysts
DE2649359C3 (en) * 1976-10-29 1979-07-26 Hoechst Ag, 6000 Frankfurt Process for improving the effectiveness of used supported silver catalysts
DE2740480B2 (en) * 1977-09-08 1979-07-05 Hoechst Ag, 6000 Frankfurt Process for improving the effectiveness of supported silver catalysts
GB1591308A (en) * 1977-10-25 1981-06-17 Ici Ltd Regeneration of silver catalysts for the production of olefine oxides
GB2014133B (en) * 1978-02-10 1982-09-22 Ici Ltd Production of alkylene oxides using a silver catalyst
DE2938245A1 (en) * 1979-09-21 1981-04-09 Hoechst Ag, 6000 Frankfurt METHOD FOR IMPROVING THE EFFECTIVENESS OF SILVER CARRIER CATALYSTS
US4391735A (en) * 1981-07-17 1983-07-05 Internorth, Inc. Cleaning and regenerating ethylene oxide catalysts

Also Published As

Publication number Publication date
FR2509630B1 (en) 1986-12-19
IT8248818A0 (en) 1982-07-15
SE8203955D0 (en) 1982-06-24
JPS5824349A (en) 1983-02-14
FR2509630A1 (en) 1983-01-21
AU8600482A (en) 1983-01-20
GB2101495A (en) 1983-01-19
SE8203955L (en) 1983-01-18
ES514036A0 (en) 1983-08-16
DE3226896A1 (en) 1983-03-03
GB2101495B (en) 1985-01-09
IT1157219B (en) 1987-02-11

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