Title:
METHOD FOR OPERATING MEMBRANE DISTILLATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/059235
Kind Code:
A1
Abstract:
Fluid to be processed, which is in a feed water tank 1, is fed via a feed water pump 2, a line 3, a heat exchanger 4, and a line 5 into hollow fibers 11 of a membrane module 10 and is returned to the feed water tank 1. The pressure in a secondary side 17 is reduced by a pressure-reducing device 25. Water in the fluid to be processed vaporizes while flowing inside the hollow fibers 11 and is discharged by being drawn out from the secondary side 17 into a line 20. In the event of the occurrence of precipitates in the secondary side 17, a valve 31 is opened and the pressure-reducing device 25 is deactivated so that the pressure on the secondary side 17 becomes positive causing condensation on the secondary side which dissolves and removes the precipitates.
Inventors:
MASUDA HARUKI (JP)
TAKAHASHI JUNICHI (JP)
TAKAHASHI JUNICHI (JP)
Application Number:
PCT/JP2021/011888
Publication Date:
March 24, 2022
Filing Date:
March 23, 2021
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D61/36; C02F1/44
Foreign References:
| JPH0330662A | 1991-02-08 | |||
| JP2002126462A | 2002-05-08 | |||
| JPH10180046A | 1998-07-07 | |||
| JP2018065101A | 2018-04-26 | |||
| JP2010119963A | 2010-06-03 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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