Dehydrating apparatus, dehydration system, and dehydration method

A dehydrating apparatus comprising, in a dehydrating apparatus body,

• a water separation membrane module in which a water separation membrane having at least one flow path extending in the up and down direction to cause a liquid to pass through is provided with a liquid inlet at the bottom thereof and a liquid outlet at the top thereof;
• and
• a shell defined by the outer surface of the water separation membrane module and the inner wall of the dehydrating apparatus body, wherein at least one heater is provided in the water separation membrane, and a connection port for connection with a pressure reducing device is provided in the shell near the liquid inlet;
• and
• as the liquid rises in the water separation membrane, water in the liquid permeates the water separation membrane and moves into the shell, by which the liquid is dehydrated.

A dehydration method comprising:

• passing a liquid through a water separation membrane having at least one flow path extending in the up and down direction, from a bottom inlet toward a top outlet;
• reducing the pressure of the outside of the water separation membrane so that water in the liquid permeates the water separation membrane;
• heating a part near the top outlet of the water separation membrane from the outside of the water separation membrane;
• and
• depressurizing a part near the bottom inlet on the outside of the water separation membrane to generate heat convection flow from the upper part to the lower part on the outside of the water separation membrane.

A dehydration method comprising:

• passing a liquid through a water separation membrane having at least one flow path extending in the up and down direction, from a bottom inlet toward a top outlet;
• reducing the pressure of the outside of the water separation membrane so that a water in the liquid permeates the water separation membrane;
• and
• causing a heated inert gas to flow from the upper part to the lower part on the outside of the water separation membrane to generate heat convection flow from the upper part to the lower part on the outside of the water separation membrane.

A dehydration method comprising:

• passing a liquid through a water separation membrane having at least one flow path extending in the up and down direction, from a bottom inlet toward a top outlet;
• reducing the pressure of the outside of the water separation membrane so that a water in the liquid permeates the water separation membrane;
• heating the water separation membrane from the inside of the water separation membrane;
• and
• depressurizing a part near the bottom inlet of the water separation membrane to generate heat convection flow from the upper part to the lower part on the outside of the water separation membrane.