公开(公告)号：US11993895B2

公开(公告)日：2024-05-28

申请号：US17282451

申请日：2019-10-02

申请人： ANDRITZ OY

发明人： Marco Andrade ,  Ronny Geiger ,  Vesa Kaipainen ,  Auvo Kettunen ,  Petri Tarjavuori ,  Viridiane Vianna

IPC分类号： D21C1/06 ,  D21C3/24 ,  D21C3/26 ,  D21C7/06

CPC分类号： D21C1/06 ,  D21C3/24 ,  D21C3/26 ,  D21C7/06

摘要： A method for feeding a slurry of chips and liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped by using at least one pump to the reactor, and alkali is fed into the at least one pump 5 for adjusting the pH of the slurry to a range of 7-10.

公开(公告)号：US09259674B2

公开(公告)日：2016-02-16

申请号：US14377065

申请日：2013-02-05

申请人： Andritz OY

发明人： Tommi Hammarberg ,  Matti Mantsinen ,  Simo Suutari ,  Petri Tarjavuori

IPC分类号： B01D37/02 ,  B01D33/15 ,  B01D33/21 ,  B01D33/46

CPC分类号： B01D33/466 ,  B01D33/21

摘要： Method and apparatus for reducing the thickness of a precoat-layer accumulated on the filtering surface of a filter disc from a solids-containing suspension in a basin of a disc filter, said disc filter having two or more filter discs arranged on a shaft and between them at least one drop chute provided with a scraper on both sides, which scraper scrapes the cake filtered from the suspension on the filtering surfaces of the filter discs into the drop, the layer thickness of the precoat on the filtering surface is reduced by shortening the distance between the tips of the scrapers and the filtering surface, and the precoat thickness reduction is accomplished for the precoats on the filtering surface of the two filter discs on both sides of the drop chute non-simultaneously.

摘要翻译： 一种用于减少聚集在滤盘过滤表面上的预涂层厚度的方法和装置，该过滤盘从盘式过滤器的盆中的固体含悬浮液中获得，所述盘式过滤器具有两个或更多个过滤盘， 它们至少有一个在两侧设置有刮刀的落料槽，该刮板将从过滤盘的过滤表面上的悬浮液过滤的滤饼刮干，将过滤表面上的预涂层的层厚缩短， 刮刀和过滤表面的尖端之间的距离以及预涂层厚度的降低是为了同时在下落槽两侧的两个过滤盘的过滤表面上的预涂层实现的。

公开(公告)号：US20140374363A1

公开(公告)日：2014-12-25

申请号：US14377065

申请日：2013-02-05

申请人： Andritz Oy

发明人： Tommi Hammarberg ,  Matti Mantsinen ,  Simo Suutari ,  Petri Tarjavuori

IPC分类号： B01D33/46

CPC分类号： B01D33/466 ,  B01D33/21

摘要： Method and apparatus for reducing the thickness of a precoat-layer accumulated on the filtering surface of a filter disc from a solids-containing suspension in a basin of a disc filter, said disc filter having two or more filter discs arranged on a shaft and between them at least one drop chute provided with a scraper on both sides, which scraper scrapes the cake filtered from the suspension on the filtering surfaces of the filter discs into the drop, the layer thickness of the precoat on the filtering surface is reduced by shortening the distance between the tips of the scrapers and the filtering surface, and the precoat thickness reduction is accomplished for the precoats on the filtering surface of the two filter discs on both sides of the drop chute non-simultaneously.

摘要翻译： 一种用于减少聚集在滤盘过滤表面上的预涂层厚度的方法和装置，该过滤盘从盘式过滤器的盆中的固体含悬浮液中获得，所述盘式过滤器具有两个或更多个过滤盘， 它们至少有一个在两侧设置有刮刀的落料槽，该刮板将从过滤盘的过滤表面上的悬浮液过滤的滤饼刮干，将过滤表面上的预涂层的层厚缩短， 刮刀和过滤表面的尖端之间的距离以及预涂层厚度的降低是为了同时在下落槽两侧的两个过滤盘的过滤表面上的预涂层实现的。