Membrane distillation dehydration method for polyatomic alcohol water solution produced from corn
A polyol and membrane distillation technology, which is applied in the application field of vacuum membrane distillation technology, can solve the problems of high cooling equipment and operating costs, take away, and high energy consumption, so as to save dehydration energy consumption, reduce losses, and high energy consumption. Effect
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[0009] Example one
[0010] Pack 85 polypropylene hollow fiber membranes in an outer tube with a size of Φ16mm×300mm. Each membrane has an inner diameter of 800μm, an outer diameter of 1000μm, an average radius of pores of 0.095μm, a porosity of 45.4%, an effective length of 250mm, and a membrane area. 0.05338m 2 (Calculated by fiber inner diameter). Prepare 2000g of polyalcohol aqueous solution with mass content of 1.2% propylene glycol 6.08%, ethylene glycol 4.21%, glycerol 3.27%, butanediol 1.16%, sorbitol 2.8%, and the rest being water, and heat the polyol aqueous solution to 61 After the temperature is kept at a constant temperature, it is pumped into the tubular membrane module 3 through the raw material pump 1, and the material liquid flows through the polypropylene hollow fiber membrane at a flow rate of 32L / h. The vacuum pump 6 makes the shell side of the membrane module that is the outer side of the hollow fiber membrane to form 0.085 Under the driving force of the press...
Example Embodiment
[0011] Example two
[0012] Pack 85 polypropylene hollow fiber membranes in an outer tube with a size of Φ16mm×300mm. Each membrane has an inner diameter of 800μm, an outer diameter of 1000μm, an average radius of pores of 0.095μm, a porosity of 45.4%, an effective length of 250mm, and a membrane area. 0.05338m 2 (Calculated by fiber inner diameter). Prepare 2000g of polyalcohol aqueous solution with mass content of 1.2% propylene glycol 6.08%, ethylene glycol 4.21%, glycerol 3.27%, butanediol 1.16%, sorbitol 2.8%, and the rest being water, and heat the polyol aqueous solution to 61 After the temperature is kept at a constant temperature, the material is pumped into the tubular membrane module 3 through the raw material pump 1, and the material liquid flows through the polypropylene hollow fiber membrane at a flow rate of 32L / h. The vacuum pump 6 makes the outer side of the hollow fiber membrane in the membrane module form a 0.089 MPa Vacuum degree, under the driving force of the ...
Example Embodiment
[0013] Example three
[0014] Pack 85 polypropylene hollow fiber membranes in an outer tube with a size of Φ16mm×300mm. Each membrane has an inner diameter of 800μm, an outer diameter of 1000μm, an average radius of pores of 0.095μm, a porosity of 45.4%, an effective length of 250mm, and a membrane area. 0.05338m 2 (Calculated by fiber inner diameter). Prepare 1230g of a polyol aqueous solution with a mass content of 6.08% of 1,2 propylene glycol, 4.21% of ethylene glycol, 3.27% of glycerol, 1.16% of butanediol, 2.8% of sorbitol, and the rest being water. Heat the aqueous polyol solution to 65 After the temperature is kept at a constant temperature, the material is pumped into the tubular membrane module 3 through the raw material pump 1, and the material liquid flows through the polypropylene hollow fiber membrane at a flow rate of 32L / h. The membrane vacuum pump 6 causes the outside of the hollow fiber membrane in the membrane module to form 0.085MPa Under the driving force of t...
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