Concentrating apparatus for fluid containing levulinic acid compounds
A technology of levulinic acid and compound, applied in the field of concentration equipment, can solve the problems of low yield and high energy consumption of levulinic acid compounds, and achieve the effects of low cost, improved yield and easy realization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0023] As an embodiment of the present invention, the fluid containing levulinic acid compounds is derived from biomass material hydrolyzate.
[0024] As an embodiment of the present invention, the fluid containing levulinic acid compounds is derived from at least one hydrolyzate of xylitol, glucose, cellobiose, cellulose, hemicellulose and lignin; or A hydrolyzate derived from at least one of paper sludge, waste paper, bagasse, glucose, wood, corn cobs, corn stover, and rice straw.
[0025] As an embodiment of the present invention, there is no particular limitation on the method of deriving the fluid containing levulinic acid compounds from the biomass material, and those conventionally known in the art can be used. For example, the derivatization method may include subjecting the biomass material to catalytic conversion (such as hydrolytic deoxygenation, inorganic acid catalyzed hydrolysis, organic acid catalyzed hydrolysis, solid acid catalyzed hydrolysis, molecular sieve ...
Embodiment 1
[0035] Take by weighing 1.5 kilograms of corn stalks, place in an autoclave and add 10 kilograms of water, then add a 5mol / L sulfuric acid solution with 7% water quality, heat up to 180° C. and react for 45 minutes, then cool to obtain levulinic acid containing The reaction solution. Experimental determination, the content of levulinic acid is 31%.
[0036] Take 6 kg of the reaction solution to pass through the alumina ceramic filter membrane with a membrane pore size of 1 μm, control the pressure at 1 MPa, and control the temperature at 20° C. to collect the permeate.
[0037] The permeate is passed through an ultrafiltration membrane with a rejection of more than 1000. The membrane material is polyvinylidene fluoride, the operating pressure is 7MPa, and the operating temperature is 30°C, and the ultrafiltration permeate is collected.
[0038] Pass the ultrafiltrate through a composite membrane of cellulose acetate and polyamide, reverse osmosis concentration and filtration,...
Embodiment 2
[0040] Take by weighing 1.1 kilograms of corn stalks, place in an autoclave and add 8.6 kilograms of water, then add a 5mol / L sulfuric acid solution with 5% water quality, heat up to 200°C and react for 45 minutes, then cool to obtain levulinic acid containing The reaction solution. Experimental determination, the content of levulinic acid is 34%.
[0041] Take 5kg of reaction solution with levulinic acid concentration of 34% and pass it through a titanium oxide ceramic filter membrane with a membrane pore size of 100um, control the pressure at 4MPa, and control the temperature at 100°C to collect the permeate.
[0042] The permeate is passed through an ultrafiltration membrane with a throw cut-off greater than 1000. The membrane material is polyvinyl chloride, the operating pressure is 0.5 MPa, and the operating temperature is 25° C. to collect the ultrafiltration permeate.
[0043] Pass the ultrafiltrate through a polyamide membrane, concentrate and filter by reverse osmosi...
PUM
| Property | Measurement | Unit |
|---|---|---|
| purity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More