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1. 发明专利

JPH1192138A PRODUCTION OF CALCIUM HYDROXIDE BY TWO-STAGE REACTION 失效
公开(公告)号：JPH1192138A
公开(公告)日：1999-04-06
申请号：JP27059797
申请日：1997-09-16
申请人： ADACHI SEKKAI KOGYO KK
发明人： KOSAKA MASATOSHI , YAMADA SHINJI , UEDA TAKAHARU , HAMAMOTO YOSHITO
IPC分类号： C01F11/02
摘要： PROBLEM TO BE SOLVED: To obtain calcium hydroxide having a large specific surface area with a simple structure of an apparatus at a low cost. SOLUTION: In the 1st stage of a reaction process at the time of slaking calcium oxide, 0.2-5 pts.wt. ethylene glycol or diethylene glycol optionally diluted with water to a proper concn. is added to 100 pts.wt. calcium oxide before slaking and they are mixed by means of a continuous or batch-type stirring mixer. In the 2nd stage, the calcium oxide is slaked with water in a continuous or batch-type slaking reactor.

2. 发明专利

JPH09278434A PRODUCTION OF CALCIUM HYDROXIDE 失效
公开(公告)号：JPH09278434A
公开(公告)日：1997-10-28
申请号：JP11017796
申请日：1996-04-04
申请人： ADACHI SEKKAI KOGYO KK
发明人： KOSAKA MASATOSHI , TEJIMA SHOGO , YAMADA SHINJI , UEDA TAKAHARU , HAMAMOTO YOSHITO
IPC分类号： C04B2/06 , C01F11/02
摘要： PROBLEM TO BE SOLVED: To obtain Ca(OH)2 having a large specific surface area at a low cost by using a prescribed amt. of an org. solvent when an aq. soln. of the org. solvent is added to CaO and slaking reaction is allowed to take place. SOLUTION: When an aq. soln of (di)ethylene glycol is added to CaO and slaking reaction is allowed to take place, the (di)ethylene glycol. is used by 0.2-5 pts.wt., preferably 0.5-2.0 pts.wt. per 100 pts.wt. CaO. It is preferable that an aq. soln. having 100-5wt.% concn. of (di)ethylene glycol is mixed with CaO, remaining water necessary for slaking reaction is then added and slaking reaction is allowed to take place.

3. 发明专利

JP2005104754A Slaked lime with large specific surface area and its manufacturing method 有权
标题翻译：具有大型特殊表面区域的SLAKED LIME及其制造方法
公开(公告)号：JP2005104754A
公开(公告)日：2005-04-21
申请号：JP2003337793
申请日：2003-09-29
申请人： Adachi Sekkai Kogyo Kk , Kokan Kogyo Kk , 足立石灰工業株式会社 , 鋼管鉱業株式会社
发明人： SAKAI HIDENORI , YAMAGUCHI ATSUSHI , NAKAYAMA NOBUTAKA , MATSUDA SHIGEHISA , YAMADA SHINJI , TOMITANI MAMORU , FUJIOKA SHUJI
IPC分类号： C01F11/06
摘要： PROBLEM TO BE SOLVED: To provide novel slaked lime with a large specific surface area, which shows an excellent performance at transport, is suitable for removing acidic substances from combustion exhaust gas of wastes etc., has characteristics inherent in calcium hydroxide with a large specific surface area, such as high reactivity with acid gas and reduced generation of fly ash or dust and avoids troubles concerning discharge from storage tanks and occlusion of piping. SOLUTION: The slaked lime with a large specific surface area essentially comprises calcium hydroxide and has a nitrogen adsorption specific surface area of ≥35 m 2 /g and an average particle size of ≥75 μm for particles within the range of 40-200 μm and contains ≥45 wt.% particles within the range of 40-200 μm. The coarse particles of the slaked lime have small contact area with other particles when they contact or collide with other particles in the piping etc., which results in little coagulation or growth, and their large mass and inertia force prevent their deposition on interior of the piping etc. Therefore, the obtained slaked lime with a large specific surface area shows an excellent performance at transport. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有大比表面积的新型熟石灰，其在运输中表现出优异的性能，适用于从废物等的燃烧废气中除去酸性物质，具有氢氧化钙固有的特性大的比表面积，例如与酸性气体的高反应性，并减少飞灰或灰尘的产生，并避免从储罐排放和堵塞管道的麻烦。解决方案：具有大比表面积的熟石灰基本上包含氢氧化钙，氮吸附比表面积≥35m2 / SP / g，平均粒度≥75μm，颗粒在40-200μm范围内，并且在40-200μm范围内含有≥45wt。％的颗粒。消石灰的粗颗粒当与管道等中的其它颗粒接触或碰撞时具有与其他颗粒的接触面积小，这导致凝固或生长很少，并且它们的大质量和惯性力防止其沉积在管道等。因此，具有大比表面积的获得的熟石灰在运输时表现出优异的性能。版权所有（C）2005，JPO＆NCIPI

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