公开(公告)号：JPS5356194A

公开(公告)日：1978-05-22

申请号：JP13126676

申请日：1976-11-02

Applicant: KOGYO GIJUTSUIN

Inventor： HAYANO ICHIROU ,  GOTOU FUJITAROU ,  KAWASAKI SHIGETAKE ,  OOWA MASARU ,  AKITANI YOUJI ,  TAKEUCHI NORIO ,  ISHIZAKA SEIICHI

IPC: C01D1/30

Abstract: PURPOSE:To crystalize caustic alkali with high purity, by adjusting a concn. of caustic alkali obtd. from diaphragm method to a constant value, adding a mother liquer, from which a fixed ratio of caustic alkali has been crystalized and separated off, cooling it to precipitate and remove alkali halide, and then diluting it with water to a fixed concn.

公开(公告)号：JPS51135898A

公开(公告)日：1976-11-25

申请号：JP5985375

申请日：1975-05-20

Applicant: KOGYO GIJUTSUIN ,  MITSUI SHIPBUILDING ENG

Inventor： KAWASAKI SHIGETAKE ,  HAYANO ICHIROU ,  AKITANI TAKAJI ,  OOWA MASARU ,  INOUE MAMORU ,  YAMAZAKI TAKAI ,  SAKAI KATSUYA

IPC: C01D1/30 ,  C01D1/28

Abstract: PURPOSE:The refining process of the caustic soda solution with high efficiency.