Process for purifying crude glycerol
First Claim
1. A process for purifying crude glycerol in aqueous solution, comprising the steps of obtaining the crude glycerol from oils and fats by saponification, hydrolysis or methanolysis, and microfiltrating over a filter material having a pore size in the range of from 1×
- 10-6 to 1×
10-8 m on a ceramic support.
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Accused Products
Abstract
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.
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Citations
10 Claims
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1. A process for purifying crude glycerol in aqueous solution, comprising the steps of obtaining the crude glycerol from oils and fats by saponification, hydrolysis or methanolysis, and microfiltrating over a filter material having a pore size in the range of from 1×
- 10-6 to 1×
10-8 m on a ceramic support. - View Dependent Claims (2, 3, 5, 7, 8, 9, 10)
- 10-6 to 1×
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4. A process for purifying crude glycerol in aqueous solution, comprising the steps of obtaining the crude glycerol from oils and fats by saponification, hydrolysis or methanolysis, and microfiltrating and ultrafiltrating in combination over a filter material having a pore size less than 1×
- 10-8 m on a ceramic support.
- View Dependent Claims (6)
Specification