Application field
Background technique
Ethanol is widely used in energy, chemical, pharmaceutical and other industries. Because the ethanol-water system has the lowest constant boiling point, the content of ethanol obtained by ordinary distillation will not exceed 95.57%, and other methods must be used to obtain it. Further separation to obtain absolute ethanol. The traditional azeotropic distillation and extractive distillation have formed a large-scale and highly mechanized anhydrous alcohol production process, but the energy consumption is high, and the entrainer or extractant will cause environmental pollution when the production operation is improper.
technical comparison
|
project |
Unit price (yuan) |
Ethylene glycol extractive distillation |
inorganic pervaporation membrane |
||
|
Unit consumption |
Unit consumption cost/yuan |
Unit consumption |
Unit consumption cost/yuan |
||
|
Extractant/(t·t -1 ) |
8000 |
0.33*10-3 |
2.64 |
-- |
-- |
|
Electricity (kwh·t -1 ) |
1.0 |
7.9 |
7.9 |
19.9 |
19.9 |
|
steam/(t·t -1 ) |
200 |
1.2 |
276.0 |
0.48 |
96.0 |
|
Water/(m 3 ·t -1 ) |
0.2 |
107.0 |
21.4 |
38.0 |
7.6 |
|
total |
-- |
-- |
307.9 |
-- |
123.5 |
Membrane Technical Features
★ High efficiency and energy saving Compared with traditional distillation and adsorption technology, it can save energy by more than 30~50%;
★ High recovery rate The recovery rate is not less than 97%, and the recovery and utilization of permeate can reach more than 99%;
★ Environmental friendliness does not require the introduction of a third component, and the permeate can be recycled and recycled;
★ Easy to operate Production process control through PLC, real-time monitoring with HMI, high degree of automation;
★ Small footprint, easy installation and maintenance Low equipment height, modular design, simple installation and maintenance, no civil engineering requirements;
★ Excellent membrane performance Compared with organic membranes, it has large flux, high separation coefficient, resistance to organic solvents, no swelling, and long membrane life.
|
|
GFT |
Jiutian Hi-Tech |
|
Processing capacity |
1200 kg/h |
|
|
Product purity |
99.2% |
99.6% |
|
Permeate water content |
90% |
98% |
|
stability |
Frequent membrane breaks |
Stable operation |
