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1. 发明授权

US5116476A Atmospheric diffuser improved lower screens backflushing 失效
标题翻译：大气扩散器改善了下降屏幕反冲洗
公开(公告)号：US5116476A
公开(公告)日：1992-05-26
申请号：US628090
申请日：1990-12-17
申请人： Joseph Phillips , J. Robert Prough , Victor Bilodeau , Brian Greenwood , Ronald Bain , John Weston
发明人： Joseph Phillips , J. Robert Prough , Victor Bilodeau , Brian Greenwood , Ronald Bain , John Weston
IPC分类号： B01D33/00 , B01D33/01 , B01F5/00 , D21C9/02 , D21C9/04 , D21D1/40 , D21D5/02
CPC分类号： D21D5/02 , B01D33/0116 , D21C9/04 , D21D1/40
摘要： In an atmospheric diffuser for the treatment of paper pulp (thickening, bleaching, and/or washing) the flow of backflushing liquid is controlled so as to maximize the effective treatment of the pulp. The pulp passes upwardly in a vessel. A number of annular screen assemblies are provided, with at least one screen associated with each screen assembly. The lower screen includes a barrier wall with a passage in the barrier wall adjacent the bottom end of the screen. Liquid which flows through the screen must flow to the passage in order to be withdrawn from the vessel, as the screen is slowly moved upwardly. When the screen is rapidly moved downwardly to cause backflushing, the backflushing liquid at the top end of the screen is liquid that recently passed through the screen at that point, so the pulp at that point--which is the cleanest along the length of the screen--has a minimal chance of being contaminated. The barrier may be provided by a number of tubes separated by webs, or a number of channels separated by webs. A baffle may be mounted between each passage and screen to redirect the backflushing liquid so that it does not merely backflush the bottom portion of the screen.

2. 发明授权

US5266159A Mass flow measurement, preferably for controlling chip feed to a digester 失效
标题翻译：质量流量测量，优选用于控制向消化器的进料
公开(公告)号：US5266159A
公开(公告)日：1993-11-30
申请号：US782828
申请日：1991-10-25
申请人： Brian Greenwood , Andries Daamen , Gene Graham
发明人： Brian Greenwood , Andries Daamen , Gene Graham
IPC分类号： D21C7/06 , D21C7/12 , D21C3/26
CPC分类号： D21C7/12 , D21C7/06
摘要： A method and system are provided for controlling the feed of comminuted cellulosic fibrous material (e.g. wood chips) to a continuous digester utilizing a chips meter of variable speed. A quality of the chips related to mass flow--preferably density--is continuously determined, preferably while the material is in free fall, not immersed in liquid. The speed of the material meter is controlled in response to the quality determined to provide a target mass flow of material from the meter to the digester. A nuclear type density gauge may be utilized having a source and a detector mounted on opposite sides of a chip chute, and above the level of liquid in a chip chute so that density is determined during free fall of the chips, not immersed in liquid. A level sensor may also be associated with the chip chute with a shield between the nuclear source and the level sensor. The chip meter speed is controlled in the range of about 0-16 rpm.
摘要翻译：提供了一种方法和系统，用于控制粉碎的纤维素纤维材料（例如木片）进给使用可变速度的切屑计的连续消化器。连续确定与质量流相关的芯片的质量（优选密度），优选在材料自由落下时不浸没在液体中。物料计的速度是根据质量确定的，以提供材料从仪表到蒸煮器的目标质量流量。可以使用核型密度计，其具有安装在芯片滑槽的相对侧上的源和检测器，并且在芯片滑槽中的液面之上，使得在芯片的自由落体期间确定密度，而不浸没在液体中。液位传感器还可以与芯片槽相关联，在核源和液位传感器之间具有屏蔽。芯片表速度控制在约0-16 rpm的范围内。

3. 发明授权

US5183536A Atmospheric diffuser improved lower screens backflushing 失效
标题翻译：大气扩散器改善了下屏幕反吹
公开(公告)号：US5183536A
公开(公告)日：1993-02-02
申请号：US850522
申请日：1992-03-13
申请人： Joseph Phillips , J. Robert Prough , Victor L. Bilodeau , Brian Greenwood , Ronald Bain , John Weston
发明人： Joseph Phillips , J. Robert Prough , Victor L. Bilodeau , Brian Greenwood , Ronald Bain , John Weston
IPC分类号： B01D33/01 , D21C9/04 , D21D1/40 , D21D5/02 , D21H17/00
CPC分类号： D21H17/00 , B01D33/0116 , D21C9/04 , D21D1/40 , D21D5/02
摘要： In an atmospheric diffuser for the treatment of paper pulp (thickening, bleaching, and/or washing) the flow of backflushing liquid is controlled so as to maximize the effective treatment of the pulp. The pulp passes upwardly in a vessel. A number of annular screen assemblies are provided, with at least one screen associated with each screen assembly. The lower screen includes a barrier wall with a passage in the barrier wall adjacent the bottom end of the screen. Liquid which flows through the screen must flow to the passage in order to be withdrawn from the vessel, as the screen is slowly moved upwardly. When the screen is rapidly moved downwardly to cause backflushing, the backflushing liquid at the top end of the screen is liquid that recently passed through the screen at that point, so the pulp at that point --which is the cleanest along the length of the screen--has a minimal chance of being contaminated. The barrier may be provided by a number of tubes separated by webs, or a number of channels separated by webs. A baffle may be mounted between each passage and screen to redirect the backflushing liquid so that it does not merely backflush the bottom portion of the screen.
摘要翻译：在用于处理纸浆（增稠，漂白和/或洗涤）的大气扩散器中，控制反冲洗液体的流动以最大化纸浆的有效处理。纸浆在容器中向上流动。提供了许多环形屏幕组件，其中至少一个屏幕与每个屏幕组件相关联。下屏幕包括阻挡壁，阻挡壁在屏障壁中与屏幕底端相邻的通道。当屏幕缓慢向上移动时，流过筛网的液体必须流动到通道以便从容器中取出。当屏幕快速向下移动以引起反吹时，屏幕顶端的反冲洗液体是最近在那一点通过筛网的液体，因此在该点处的纸浆是沿屏幕长度最干净的 - 受到污染的机会很小。隔离层可以由多个由纤维网隔开的管道或由纤维网隔开的多个通道提供。可以在每个通道和屏幕之间安装挡板以重定向反冲洗液体，使得其不仅仅反冲洗屏幕的底部。

4. 发明申请

US20070000626A1 Gas phase continuous digester having an inverted top separator with liquor injection 有权
标题翻译：气相连续蒸煮器具有倒置顶部分离器，注入液体
公开(公告)号：US20070000626A1
公开(公告)日：2007-01-04
申请号：US11518323
申请日：2006-09-11
申请人： C. Stromberg , Keith Vogel , John Bolles , Patrick Sullivan , Brian Greenwood
发明人： C. Stromberg , Keith Vogel , John Bolles , Patrick Sullivan , Brian Greenwood
IPC分类号： D21C3/26 , D21C3/22
CPC分类号： D21C7/06 , D21C3/24 , D21C7/14
摘要： A method for adding cooking liquor into a vapor phase continuous digester for producing chemical cellulose pulp from cellulose chips including: introducing a slurry of the cellulose chips from a feed system to an inverted top separator in a top vapor phase section of the digester; distributing the slurry of the cellulose chips from the top separator into the vapor phase section of the digester; passing liquor through a conduit included with the drive shaft assembly of the top separator, and introducing the liquor from the conduit into the slurry as the slurry flows through the top separator or is distributed from the separator into the vapor phase section.
摘要翻译：一种将蒸煮液添加到蒸气相连续蒸煮器中以从纤维素片制造化学纤维素纸浆的方法，包括：将纤维素片料从进料系统引入到蒸煮器顶部气相部分的倒置顶部分离器; 将来自顶部分离器的纤维素片的浆料分配到蒸煮器的气相部分; 使液体通过包括在顶部分离器的驱动轴组件中的导管，并且当浆料流过顶部分离器时将液体从导管引入浆料中，或者从分离器分配到气相部分中。

5. 发明授权

US5607545A Ozone bleaching process utilizing a fluidizing mixer and super-atmospheric pressure 失效
标题翻译：臭氧漂白工艺利用流化搅拌机和超大气压力
公开(公告)号：US5607545A
公开(公告)日：1997-03-04
申请号：US935334
申请日：1992-08-27
申请人： Kaj Henricson , Brian Greenwood
发明人： Kaj Henricson , Brian Greenwood
IPC分类号： D21C9/10 , D21C9/153 , D21C9/14 , D21C9/16
CPC分类号： D21C9/153 , D21C9/10
摘要： Method and apparatus for ozone bleaching a medium consistency cellulosic fiber suspension include feeding the fiber suspension and an ozone in carrier gas stream under pressure into a fluidizing mixer; intimately and uniformly mixing the fiber suspension with the ozone to achieve a bleaching reaction; passing the mixture into a first reaction vessel to permit the bleaching reaction to proceed and to consume a major part of the ozone; adding a second bleaching chemical to the mixture; separating the excess ozone and carrier gas from the mixture in a second considerably larger vessel and removing the fiber suspension from the second vessel after the effective second bleaching reaction.
摘要翻译：用于臭氧漂白中等稠度纤维素纤维悬浮液的方法和装置包括在压力下将纤维悬浮液和载气中的臭氧进料到流化混合器中; 将纤维悬浮液与臭氧紧密均匀混合以实现漂白反应; 将混合物通入第一反应容器以允许漂白反应进行并消耗大部分臭氧; 向混合物中加入第二漂白化学品; 在第二相当大的容器中从混合物中分离多余的臭氧和载气，并在有效的第二漂白反应之后从第二容器中除去纤维悬浮液。

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