SYSTEM AND METHOD FOR CONCENTRATING LIQUID

PROBLEM TO BE SOLVED: To stably concentrate a liquid and certainly separate steam and a concentrated liquid in a system for concentrating a liquid. SOLUTION: The system for concentrating a liquid 100 has a liquid concentrating vessel 1. The liquid concentrating vessel has a grooved pipe 18, an outer pipe 10 arranged on the outer peripheral surface side of the grooved pipe, and members 31, 32, 16 arranged about at the center part of the inner peripheral side of the grooved pipe and introducing volatile components of a liquid to be treated fed to the inside of the grooved pipe to the outside. A space isolated from the inside of the grooved pipe is formed between the grooved pipe and the outer pipe and warm water is fed to the space. A space to be treated of the inner peripheral side of the grooved pipe is depressurized with a vacuum exhaust means 98. A means 83 for measuring the temperature of the warm water fed to the grooved pipe is installed at a warm water feed means feeding the warm water. The liquid concentrating vessel is provided with a means 86 measuring the pressure of the inside of the grooved pipe, a member 17 in which the concentrated components of the liquid to be treated are circulated, and a flow rate control valve 96 interposed in the above member. COPYRIGHT: (C)2009,JPO&INPIT