Patent ID: 8034217

Claim:
A liquid condensation system that heats a liquid raw material under a decompressed circumstance and evaporates a volatile component from a liquid surface to condense the liquid raw material, the system comprising: liquid condensers, each of which condenses the liquid raw material; a vacuum pump that is in communication with the liquid condensers; a warm fluid circulation system as a heating source that heats the liquid raw material in the liquid condensers with a warm fluid in the warm fluid circulation system; vapor lines through which the volatile component evaporated in the liquid condensers is led to the outside of the liquid condensers; condensed-liquid lines through which the condensed liquid that is not evaporated in the liquid condensers is led to the outside of the liquid condensers; condensed-liquid-line adjusting valves that are interposed on the condensed-liquid lines; heaters attached to the condensed-liquid lines; and a control unit that controls the heaters and the condensed-liquid-line adjusting valves, wherein each of the liquid condensers has a double-cylinder structure having an outer pipe and an inner pipe, and is structured in such a manner that: the axis of the cylinder is arranged in a vertical axis direction; a cylindrical space where a warm fluid led from the warm fluid circulation system flows is formed between the outer pipe and the inner pipe; a plurality of grooves extending in the axis direction are formed on an inner circumferential face of the inner pipe; a hollow vapor-discharge-pipe, one end of which protrudes inside a processing space that is formed inside the inner pipe and the other end of which extends to the outside from the inner pipe, is arranged at a lower portion of the inner pipe; a supplying pipe through which the liquid raw material is supplied to the groove portions of the inner pipe is formed at an upper portion of the inner pipe; a condensed-liquid discharge pipe through which the separated condensed liquid is discharged is provided at a position that is located at a lower portion of the inner pipe and is different from that where the vapor discharge pipe is arranged; the vapor line is connected to the vapor discharge pipe; and the condensed-liquid line is connected to the condensed-liquid discharge pipe.