Title:
CONCENTRATION PLANT, PLANT FOR PRODUCING FRESH WATER BY CONCENTRATION AND FOR GENERATING ELECTRIC POWER, CONCENTRATION METHOD, AND METHOD FOR OPERATING PLANT FOR PRODUCING FRESH WATER BY CONCENTRATION AND FOR GENERATING ELECTRIC POWER
Document Type and Number:
WIPO Patent Application WO/2012/008013
Kind Code:
A1
Abstract:
A desalination device operated by a membrane method and a concentration device operated by a vaporization method are used in combination to thereby stably concentrate water containing a salt, such as accompanying water, at a low equipment cost and separate the water into fresh water and the salt. Accompanying water (20) is treated in pretreatment equipment (3) to remove solid substances and dissolved substances therefrom to thereby yield pretreated water (21). The pretreated water (21) flows into reverse osmosis membrane concentration equipment (4) and is separated into filtrate water (22) and membrane-concentrated water (24). The filtrate water (22) is utilized as fresh water. The membrane-concentrated water (24) flows into a precipitation part (10), in which an alkali is mixed therewith to precipitate insoluble matter. Thereafter, this membrane-concentrated water flows into a storage tank (5) together with discharge water (23) resulting from the pretreatment and sent from the pretreatment device (3), giving supply water (25) for vaporization concentration. The supply water (25) flows into vaporization concentration equipment (6) and is separated into condensed water (26) and vaporization-concentrated water (27). The condensed water (26) is utilized as fresh water. The vaporization-concentrated water (27) is stored in a concentrated-water tank (7). In the vaporization concentration equipment (6), the concentration is conducted using, as a heat source, steam generated in a waste heat recovery boiler (2).
Inventors:
SUMIKURA Misaki (Hitachi Ltd., 2-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 21, 〒3191221, JP)
隅倉 みさき (〒21 茨城県日立市大みか町七丁目２番１号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
HORITSUGI Mutsumi (18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 08, 〒1018608, JP)
堀次 睦 (〒08 東京都千代田区外神田一丁目１８番１３号 株式会社日立製作所内 Tokyo, 〒1018608, JP)
KUBA Shunichi (Hitachi Ltd., 1-1, Saiwai-cho 3-chome, Hitachi-sh, Ibaraki 11, 〒3178511, JP)
隅倉 みさき (〒21 茨城県日立市大みか町七丁目２番１号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
HORITSUGI Mutsumi (18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 08, 〒1018608, JP)
堀次 睦 (〒08 東京都千代田区外神田一丁目１８番１３号 株式会社日立製作所内 Tokyo, 〒1018608, JP)
KUBA Shunichi (Hitachi Ltd., 1-1, Saiwai-cho 3-chome, Hitachi-sh, Ibaraki 11, 〒3178511, JP)
Application Number:
JP2010/061803
Publication Date:
January 19, 2012
Filing Date:
July 12, 2010
Export Citation:
Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
SASAKURA ENGINEERING CO., LTD. (7-5 Mitejima 6-chome, Nishiyodogawa-ku,Osaka-sh, Osaka 12, 〒5550012, JP)
株式会社ササクラ (〒12 大阪府大阪市西淀川区御幣島６丁目７番５号 Osaka, 〒5550012, JP)
SUMIKURA Misaki (Hitachi Ltd., 2-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 21, 〒3191221, JP)
隅倉 みさき (〒21 茨城県日立市大みか町七丁目２番１号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
HORITSUGI Mutsumi (18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 08, 〒1018608, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
SASAKURA ENGINEERING CO., LTD. (7-5 Mitejima 6-chome, Nishiyodogawa-ku,Osaka-sh, Osaka 12, 〒5550012, JP)
株式会社ササクラ (〒12 大阪府大阪市西淀川区御幣島６丁目７番５号 Osaka, 〒5550012, JP)
SUMIKURA Misaki (Hitachi Ltd., 2-1, Omikacho 7-chome, Hitachi-sh, Ibaraki 21, 〒3191221, JP)
隅倉 みさき (〒21 茨城県日立市大みか町七丁目２番１号 株式会社日立製作所 エネルギー・環境システム研究所内 Ibaraki, 〒3191221, JP)
HORITSUGI Mutsumi (18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 08, 〒1018608, JP)
International Classes:
C02F1/04; B01D1/26; C02F1/16; C02F1/44; C02F5/06; F02C3/30; F02C6/00; F02C6/04; F02C6/18
Attorney, Agent or Firm:
KASUGA Yuzuru (Torii-nihonbashi Bldg, 4-1 Nihonbashi-honcho 3-chome, Chuo-k, Tokyo 23, 〒1030023, JP)
Claims: