Feeding system of feeding a cellulose material

A feeding system for feeding comminuted cellulose containing material and liquid to a continuously operating treatment vessel, comprising:

• a chute operating at a first pressure and having a first level of a liquid and a first level of a material;
• a high pressure feeder in operative engagement with the chute, the high pressure feeder having a plurality of rotatable pockets defined therein, the high pressure feeder having a first and second inlet and a first and second outlet, the chute being in fluid communication with the first inlet;
• a feed line having one end in operative engagement with the second outlet of the high pressure feeder and an opposite end in operative engagement with a treatment vessel, the feed line maintaining a second pressure for conveying the liquid and material to the treatment vessel, the second pressure being greater than the first pressure;
• a return line in operative engagement with the second inlet of the high pressure feeder, the return line carrying a return liquid flow from the treatment vessel;
• and
• a first recirculation conduit in operative engagement with the first outlet of the high pressure feeder for conveying a recirculation flow to the first inlet of the high pressure feeder, the first recirculation conduit being in fluid communication with one of the pockets of the high pressure feeder to receive the liquid and the material from a pocket of the high pressure feeder that is at least partially aligned with the first recirculation conduit, the first outlet having a screen having slots defined therein, the slots being wider than 25 millimeters allowing comminuted cellulose containing material to pass through the first outlet and enter the first recirculation conduit.

A feeding system for feeding comminuted cellulose containing material and liquid to a continuously operating treatment vessel, comprising:

• a chute operating at a first pressure and having a first level of a liquid and a first level of a material;
• a high pressure feeder in operative engagement with the chute, the high pressure feeder having a plurality of rotatable pockets defined therein, the high pressure feeder having a first and second inlet and a first and second outlet, the chute being in fluid communication with the first inlet;
• a feed line having one end in operative engagement with the second outlet of the high pressure feeder and an opposite end in operative engagement with a treatment vessel, the feed line maintaining a second pressure for conveying the liquid and material to the treatment vessel, the second pressure being greater than the first pressure;
• a return line in operative engagement with the second inlet of the high pressure feeder, the return line carrying a return liquid flow from the treatment vessel;
• and
• a first recirculation conduit extending from the first outlet to the second inlet of the high pressure feeder for conveying a recirculation flow to the second inlet of the high pressure feeder, the first recirculation conduit being in fluid communication with one of the pockets of the high pressure feeder to receive the liquid and the material from a pocket of the high pressure feeder that is at least partially aligned with the first recirculation conduit, the first outlet being without having a screen.