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1. 发明专利

JP2009274893A METHOD FOR DETOXIFYING HFC-134a AND PREPARATION METHOD OF CALCIUM CARBONATE 有权
标题翻译：用于脱氧HFC-134a的方法和碳酸钙的制备方法
公开(公告)号：JP2009274893A
公开(公告)日：2009-11-26
申请号：JP2008125996
申请日：2008-05-13
申请人： Shiraishi Kogyo Kaisha Ltd , Hideki Yamamoto , 秀樹山本 , 白石工業株式会社
发明人： YAMAMOTO HIDEKI , MATSUBARA KATSURA , NAKAYAMA NORIHIKO , UEMATSU SHINJI , OKAZAKI TAKAHIRO
IPC分类号： C01F11/18 , C01F11/22 , C07B31/00 , C07C19/08
摘要： PROBLEM TO BE SOLVED: To provide a method for detoxifying HFC-134a, capable of achieving high reaction efficiency when decomposing HFC-134a by a catalytic reaction with a metal compound. SOLUTION: HFC-134a (C 2 H 2 F 4 ) is brought into contact with calcium oxide formed by thermally decomposing calcium hydroxide and decomposed according to formula (A1): 2C 2 H 2 F 4 +4CaO→4CaF 2 +3C+2H 2 O+CO 2 . Here, a byproduct produced in a process for preparing calcium carbonate by carbonate gas reaction method is used as the calcium hydroxide. HFC-134a is brought into contact with the byproduct to thermally decompose the calcium hydroxide into calcium oxide as well as to decompose HFC-134a by a reaction according to formula (A1). COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决问题的方案：提供HFC-134a的解毒方法，能够通过与金属化合物的催化反应分解HFC-134a而达到高的反应效率。解决方案：将HFC-134a（C 2 2 F 4 ）与通过热分解氢氧化钙形成的氧化钙接触并按照式（A1）分解：2C 2 2 + 4CaO→4CaF 2 + 3 + 2H 2 O + CO 2 。这里，作为氢氧化钙，使用在碳酸
盐气体反应法制备碳酸钙的方法中产生的副产物。使HFC-134a与副产物接触，将氢氧化钙热分解成氧化钙，并通过式（A1）的反应分解HFC-134a。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2010202433A Method for recovering calcium fluoride 有权
标题翻译：回收氟化钙的方法
公开(公告)号：JP2010202433A
公开(公告)日：2010-09-16
申请号：JP2009047649
申请日：2009-03-02
申请人： Shiraishi Kogyo Kaisha Ltd , Hideki Yamamoto , 秀樹山本 , 白石工業株式会社
发明人： YAMAMOTO HIDEKI , MATSUBARA KATSURA , NAKAYAMA NORIHIKO
IPC分类号： C01F11/22 , B09B3/00
摘要： PROBLEM TO BE SOLVED: To recover high-purity calcium fluoride from a calcium mixture. SOLUTION: In the method, the calcium fluoride is recovered from the calcium mixture including calcium fluoride and at least one selected from calcium oxide and calcium carbonate. The method comprises: a first separation stage where acid (HA) is added to the calcium mixture, and, by reaction based on formula (F1) and formula (F2), an acid-derived calcium compound (CaA) and water are produced, and further, the calcium fluoride not reacted with the acid (HA) is separated; and a second separation stage where hydrogen fluoride is added to the acid-derived calcium compound (CaA) produced in the first separation stage, and the calcium fluoride produced based on formula (F3) is separated. The formula (F1) is CaO+2HA→CaA+H 2 O, the formula (F2) is CaCO 3 +2HA→CaA+H 2 O+CO 2 , and the formula (F3) is 2CaA+2HF→CaF 2 +2HA. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：从钙混合物中回收高纯度氟化钙。解决方案：在该方法中，从包括氟化钙和选自氧化钙和碳酸钙中的至少一种的钙混合物中回收氟化钙。该方法包括：向钙混合物中加入酸（HA）的第一分离阶段，通过式（F1）和式（F2）的反应，生成酸衍生的钙化合物（CaA）和水，此外，不与酸（HA）反应的氟化钙被分离; 和在第一分离阶段中产生的酸衍生的钙化合物（CaA）中加入氟化氢并分离基于式（F3）的氟化钙生成的第二分离阶段。式（F1）为CaO + 2HA→CaA + H 2，式（F2）为CaCO 3 SB 2 + 2HA→CaA + H < SB> O + CO 2 ，式（F3）为2CaA + 2HF→CaF 2 SB2 + 2HA。版权所有（C）2010，JPO＆INPIT

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