<p>The invention provides a process for purifying crude glycerol such as splitters crude, soaplye crude and methanolysis crude which comprises a microfiltration step over a filter material on a ceramic support preferably comprising alumina. Preferably the filter material comprises zirconia and/or alumina. Preferably the process further comprises the step of distillation and/or treatment with ion exchange resins. Also the process may involve a combination of microfiltration and ultrafiltration.</p>
申请公布号
DE68911239(T2)
申请公布日期
1994.04.14
申请号
DE1989611239T
申请日期
1989.08.09
申请人
UNICHEMA CHEMIE B.V., GOUDA, NL
发明人
BUENEMANN, THOMAS, NL-2761 XH ZEVENHUIZEN, NL;OUDEJANS, JOHANNES CORNELIS, AS ZEVENAAR, NL;GAMBA, PIETRO, I-26100 CREMONA, IT;RAMPI, ALDO, I-26100 CREMONA, IT