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1. (WO2013161324) SCALE SUPPRESSING DEVICE, GEOTHERMAL POWER GENERATION SYSTEM USING SAID DEVICE, AND SCALE SUPPRESSION METHOD

Pub. No.:    WO/2013/161324    International Application No.:    PCT/JP2013/002872
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Sat Apr 27 01:59:59 CEST 2013
IPC: C02F 5/00
C02F 5/08
Applicants: FUJI ELECTRIC CO.,LTD.
富士電機株式会社
TOHOKU HYDROPOWER & GEOTHERMAL ENERGY CO.,INC.
東北水力地熱株式会社
Inventors: KUBOTA, Kokan
久保田 康幹
KAWAHARA, Yoshitaka
川原 義隆
MYOGAN, Ichiro
明翫 市郎
KATO, Osamu
加藤 修
Title: SCALE SUPPRESSING DEVICE, GEOTHERMAL POWER GENERATION SYSTEM USING SAID DEVICE, AND SCALE SUPPRESSION METHOD
Abstract:
Provided is a scale suppressing device which can, with a safe method, suppress generation of silica scale and calcium scale in influent water containing at least a silica component and a calcium component; also provided are a geothermal power generation system using said scale suppressing device, and a scale suppressing method. This scale suppression device is provided with a chelating agent and alkaline agent adding device (40) which injects a liquid containing a chelating agent and an alkaline agent into a pipe (L1) through which influent water such as geothermal water passes, and with a control device (11) which controls a valve (7) and a pump (8) of the chelating agent and alkaline agent adding device (40). The control device (11) performs control for alternately switching between injection and non-injection of the chelating agent and the alkaline agent on the basis of a signal outputted from a scale detection device (60) which detects the amount of scale deposition.