| 摘要 |
PROBLEM TO BE SOLVED: To provide a separation method and device of a mixture of which heating cost of the mixture is inexpensive, and which can prevent contamination of impurities in a product.SOLUTION: A raw material feed liquid comprising a mixture is evaporated by an evaporator 5, and vapor from the evaporator 5 is separated into a target component and other components by a membrane separator 11. The vapor of the target component is passed through a heat exchanger 21, and then the raw material feed liquid is heated through a heat exchanger 3. Water heated by the heat exchanger 21 is separated into gas and liquid by a gas-liquid separator 30, water vapor is pressurized and its temperatures is increased by a compressor 32, and a liquid at a bottom of the evaporator 5 is heated through the heat exchanger 7. The water separated by the gas-liquid separator 30 is passed through the heat exchanger 21, and then is circulated in the gas-liquid separator 30.SELECTED DRAWING: Figure 1 |
