Invention Grant
US3634497A Acid reconstitution of spent alkaline wash solutions used in regenerating noble metal unsaturated ester synthesis catalysts
失效
用于再生金属不饱和酯合成催化剂的惰性碱性洗涤溶液的酸化重新分析
- Patent Title: Acid reconstitution of spent alkaline wash solutions used in regenerating noble metal unsaturated ester synthesis catalysts
- Patent Title (中): 用于再生金属不饱和酯合成催化剂的惰性碱性洗涤溶液的酸化重新分析
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Application No.: US3634497DApplication Date: 1969-08-26
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Publication No.: US3634497APublication Date: 1972-01-11
- Inventor: BUDKE CLIFFORD C
- Applicant: NAT DISTILLERS CHEM CORP
- Assignee: Nat Distillers Chem Corp
- Current Assignee: Nat Distillers Chem Corp
- Priority: US85319169 1969-08-26
- Main IPC: B01J23/96
- IPC: B01J23/96 ; C07C69/15 ; C07C67/04 ; B01J11/18
Abstract:
AQUEOUS WASH SOLUTIONS, PARTICULARLY THE ALKALINE WASH SOLUTIONS USED IN THE TREATMENT AND REACTIVATION OF CATALYSTS FOR UNSTURATED ESTER PRODUCTION ARE REGENERATED AND GENERALLY RECONSTITUTED FOR REUSE BY ADDITION OF AN ACID THERETO TO ADJUST THE PH TO THE OPTIMUM LEVEL AT WHICH PRECIPITATION OF IMPURIRITES AND DECREASE IN COLOR OCCURS. AS AN ADDITIONAL FEATURE, AFTER FILTERING, THE ALKALINE SOLUTION OBATINED CAN BE TREATED WITH ACTIVATED CARBON. ADDITION OF ALKALI, WITH OR WITHOUT WATER DILUTION, AS REQUIRED, RESTORES THE WASH SOLUTION TO ITS ORIGINAL COMPOSITION.
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