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公开(公告)号：US10145067B2
公开(公告)日：2018-12-04
申请号：US15271441
申请日：2016-09-21
申请人： ECOLAB USA, INC.
发明人： Yulin Zhao , Jun Li , Qing Long Rao , Stephen Ashton , Weiguo Cheng , Aleksandar Todorovic , Alan Smith
IPC分类号： D21H17/37 , D21H21/20 , D21H21/18 , D21H17/67 , D21H21/10 , D21C3/02 , D21C5/00 , D21C5/02 , D21H17/69 , D21H17/00 , D21H17/66
摘要： Methods of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength, and enhancing filler retention in a papermaking process are disclosed. The methods improve the efficiency of drainage aids, wet web strength aids, and/or wet strength aids by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives.
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2.发明申请公开(公告)号：US20170328004A1
公开(公告)日：2017-11-16
申请号：US15531211
申请日：2015-10-27
申请人： Ecolab USA Inc.
发明人： Qinglong Rao , Yulin Zhao , Weiguo Cheng , Stephen B. Ashton , Aleksandar Todorovic , Alan Smith
摘要： A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 um to about 150 um. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.
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3.发明授权公开(公告)号：US11319223B2
公开(公告)日：2022-05-03
申请号：US15502119
申请日：2014-08-08
IPC分类号： C02F1/52 , C02F11/14 , C02F11/147
摘要： An apparatus for preparing and dispensing a flocculant solution to dewatering an aqueous process stream includes a mixing pump, a maturing tank, and a feeding unit. The mixing pump mixes the flocculant solution and builds up a pressure onto the flocculant solution. The maturing pressure tank is fluidly connected with the mixing pump, so that the pressurized diluted flocculant solution is led from the mixing pump into the maturing pressure tank and matured therein under pressure that is above atmosphere pressure.
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4.发明申请公开(公告)号：US20170233268A1
公开(公告)日：2017-08-17
申请号：US15502119
申请日：2014-08-08
CPC分类号： C02F1/5227 , C02F11/14 , C02F2201/004 , C02F2201/005 , C02F2209/03 , C02F2209/44 , C02F2301/024 , C02F2301/066
摘要： The present invention relates to an apparatus (1), suitable for preparing and dispensing a flocculant solution to dewatering an aqueous process stream (4), wherein the apparatus (1) comprises a mixing pump (5) that mixes the flocculant solution and builds up a pressure onto the flocculant solution, and a maturing pressure tank (2), whereby the maturing pressure tank (2) is fluidly connected with the mixing pump (5), so that the pressurized diluted flocculant solution (3) is led from the mixing pump (5) into the maturing pressure tank (2) and matured therein under pressure that is above atmosphere pressure.
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公开(公告)号：US10697121B2
公开(公告)日：2020-06-30
申请号：US15531211
申请日：2015-10-27
申请人： Ecolab USA Inc.
发明人： Qinglong Rao , Yulin Zhao , Weiguo Cheng , Stephen B. Ashton , Aleksandar Todorovic , Alan Smith
摘要： A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 μm to about 150 μm. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.
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