Title:
フッ酸生成装置及びフッ酸生成方法
Document Type and Number:
Japanese Patent JP3785418
Kind Code:
B1
Abstract:
In the production of hydrofluoric acid by holding fluorine by adsorption from a drainage water or waste water containing fluorine with an inorganic ceramic adsorbent mainly composed of active alumina and silicon dioxide and producing hydrofluoric acid from the adsorbent provided after the adsorption, the object is to increase the efficiency of production of hydrofluoric acid and prevent the degradation of the adsorbent. A hydrofluoric acid production apparatus for producing hydrofluoric acid by holding a fluorine ion by adsorption from a fluorine compound or fluorine mixture which contains a fluorine ion with a ceramic adsorbent mainly composed of active alumina and silicon dioxide and producing hydrofluoric acid from the adsorbent provided after the adsorption, the apparatus comprising a distillation means for reacting the adsorbent with a strong alkali or strong acid and generating hexafluorosilicic acid gas by addition of crystalline silicon dioxide, and a cooling means for cooling and hydrolyzing the hexafluorosilicic acid gas produced in the distillation means to produce hydrofluoric acid.
Inventors:
Jiichi Nakaki
Application Number:
JP2005191784A
Publication Date:
June 14, 2006
Filing Date:
June 30, 2005
Export Citation:
Assignee:
J Top Service Co., Ltd.
Sakai Steel Sheet Co., Ltd.
Sakai Steel Sheet Co., Ltd.
International Classes:
C01B7/19; B01D3/00; C02F1/28
Domestic Patent References:
| JP2004345949A | ||||
| JP6015266A |
Attorney, Agent or Firm:
Tomoo Isokane
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