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31. 发明专利

JPH0873384A METHOD FOR DEACIDIFYING ORGANIC CHLORIDE 失效
公开(公告)号：JPH0873384A
公开(公告)日：1996-03-19
申请号：JP23935194
申请日：1994-09-07
申请人： CHLORINE ENG CORP LTD
发明人： ARIMOTO OSAMU , KISHI TAKEMICHI
IPC分类号： B01J41/10 , C07B63/00 , C07C17/389 , C07C19/04 , C07C19/041 , C07C21/10 , C07C21/12
摘要： PURPOSE: To provide a method for deacidifying an organic chloride by which an acidic component contained in the organic chloride is efficiently adsorbed and removed using an ion exchange method enabling the practice of adsorption. regeneration and reuse according to simple operations. CONSTITUTION: The characteristic of this method for deacidifying an organic chloride comprises (1) an acidic component removing step for using a prescribed inorganic hydroxide as an ion exchanger, bringing the ion exchanger into contact with the organic chloride containing an acidic component and adsorbing and removing the acidic component and (2) a regenerating step for treating the inorganic hydroxide, undergoing the ion exchange in the acidic component removing step and adsorbing the acidic component with an aqueous solution containing an alkali component. The inorganic hydroxide is preferably a mixture of one or more selected from zirconium hydroxide, cerium hydroxide, titanium hydroxide and ferric hydroxide and capable of suitably carrying out the deacidifying treatment of the organic chloride such as chloroform, carbon tetrachloride, trichloroethylene or tetrachloroethylene containing hydrogen chloride as the acidic component.

32. 发明专利

JPH08966A PURIFICATION BY ELECTRODIALYSIS 失效
公开(公告)号：JPH08966A
公开(公告)日：1996-01-09
申请号：JP16613894
申请日：1994-06-24
申请人： CHLORINE ENG CORP LTD
发明人： KISHI TAKEMICHI
IPC分类号： B01D61/44 , C02F1/469 , C23G1/36
摘要： PURPOSE:To purify a water soln. contg. multi-valent metal ions, etc., such as a water liq. of acid cleaning of metals, to recover the water soln. and to reuse it by performing continuously and smoothly electrodialysis of the soln. without lowering its electric current efficiency. CONSTITUTION:In an electrodialysis apparatus consisting of an anode chamber, an intermediate chamber and a cathode chamber, the intermediate chamber and the anode chamber are separated with an anion exchange membrane and the intermediate chamber and the cathode chamber are separated with an cation exchange membraane and a water soln. contg. 1 or 2 acids selected from among sulfuric acid, hydrochloric acid, phosphoric acid, chloric acid, perchloric acid and chromic acid is stored in the anode chamber (a). Multi-valent metal ions and/or a multi-valent metallic acid ions-contg. water soln. is stored in the intermediate chamber (b). In addition, a water soln. contg. inorg. salts and a pH buffer agent is stored in the cathode chamber (c) as a cathode liq. and by energizing electricity, the multi-valent metals in the water soln. stored in the intermediate chamber are decreased and removed.

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