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公开(公告)号：US11634338B1
公开(公告)日：2023-04-25
申请号：US15455651
申请日：2017-03-10
申请人： USALCO, LLC
发明人： Bruce Wonder
摘要： A method of producing particles of aluminum chlorohydrate includes (a) feeding a solution of aluminum chloride through an atomizer associated with a spray dryer, so that a spray of droplets of the solution is formed in the spray dryer, (b) operating the dryer at a temperature sufficient to cause transformation of the droplets into crystal particulates and to dry the crystal particulates, such dried crystal particulates being aluminum chlorohydrate, and (c) recovering the dried crystal particulates. A product produced by the process is also described.
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2.发明公开公开(公告)号：US20230202858A1
公开(公告)日：2023-06-29
申请号：US18111777
申请日：2023-02-20
发明人： Chase McTaggart , Brian Hodges , Charles Koetting , Frederick M. MacDonnell , Brian Dennis , Mark Hulsizer
CPC分类号： C01F7/57 , B01J8/006 , B01J8/34 , B01J8/44 , B01J19/249 , C01F7/56 , B01J2208/00911
摘要： A method of producing aluminum chlorohydrate comprises adding small form aluminum metal pellets to a reactant receiving space of a reactor tank to form a pellet bed; adding aqueous hydrochloric acid to the reactant receiving space of the reactor tank; and continuously circulating the aqueous hydrochloric acid through the pellet bed. In some embodiments, the continuously circulating aqueous hydrochloric acid dispels reaction gases from the pellet bed. Methods described herein can, in some cases, further comprise consecutively adding additional small form aluminum metal pellets to the reactant receiving space of the reactor tank as the small form aluminum metal pellets are consumed in the pellet bed.
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公开(公告)号：US20230312360A1
公开(公告)日：2023-10-05
申请号：US17848530
申请日：2022-06-24
申请人： TONGJI UNIVERSITY
发明人： Fengting Li , Ying Wang , Yifan Gu , Tao Kong , Zekun Li
IPC分类号： C01F7/57
CPC分类号： C01F7/57
摘要： Disclosed is a method for continuously producing polyaluminum chloride from aluminum slag, comprising: blending the aluminum slag with water into a slurry in a mixing tank; pumping the slurry and a sodium hydroxide solution into a first mixing reactor; introducing the mixture obtained in the first mixing reactor into a second mixing reactor and pumping hydrochloric acid into the second mixing reactor; and filtering the resulting mixture and allowing filtrate for ripening, polymerization and sedimentation to obtain liquid polyaluminum chloride; wherein each of the reactors is pipeline-shaped, arranged horizontally and provided with a spiral conveyor shaft inside which is arranged horizontally and configured to stir and convey the mixture in a pipeline. This method realizes a continuous treatment of aluminum slag together with a continuous recovery of ammonia nitrogen and produces PAC, thereby achieving resourceful utilization and improved operability.
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公开(公告)号：US20230322573A1
公开(公告)日：2023-10-12
申请号：US18021237
申请日：2021-07-30
发明人： Seyed Amir Jafari GHORESHI , Mohammad Fakrul ISLAM , Wilaiwan CHANMANEE , Brian H. DENNIS , Frederick M. MACDONNELL
CPC分类号： C01F7/57 , B01J31/165 , C01P2006/80
摘要： In one aspect, methods of producing polyaluminum chlorides are described herein which, in some embodiments, provide increased reaction rates and/or reductions in stoichiometric excesses of aluminum feedstock. In some embodiments, a method of producing polyaluminum chloride comprises providing a feedstock comprising aluminum, contacting the feedstock with a solution comprising hydrochloric acid and one or more transition metal compounds, and catalyzing formation of the polyaluminum chloride with the one or more transition metals. As described further herein, the one or more transition metal compounds can comprise a transition metal coordination complex, transition metal salt, or mixtures thereof.
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