Nut Cracker

Abstract

The present invention relates to a device and a method for increasing the yield, as well as for enabling an increase in productivity and an increased amount of production, and at the same time to improve purification of process water and waste water, respectively by decreasing the waste water flow and the amount of pollutants in the waste water.

1 - 8 . (canceled) 
   
   
       9 . A method for rendering the flocculation more effective in the production of cellulose-based products, comprising the steps:
 a) preparing a pulp and water mixture from raw material, fresh water, and recycled white water from step c);   b) ionizing and oxidizing the pulp and water mixture, wherein the pulp and water mixture produced in step a) is subjected to ozone gas, and wherein the ozone gas functions both as an oxidant and as an ionizer chemically affecting the substances in the pulp to become more reactive and form larger aggregates rendering the flocculation more effective in the pulp and water mixture; and   c) forming a cellulose-based product from the ionized and oxidized pulp and producing a white water, and supplying at least a part of the white water to step a) as recycled white water.   
   
   
       10 . A method according to  claim 9 , further comprising supplying retention agents to the pulp and water mixture between step a) and step b). 
   
   
       11 . A method according to  claim 9 , further comprising supplying retention agents to the pulp and water mixture between step b) and step c). 
   
   
       12 . A method according to  claim 9 , further comprising at least partially subjecting the incoming recycled white water of step a) to ozone gas. 
   
   
       13 . A device rendering the flocculation more effective in the production of cellulose-based products, comprising:
 a pulp and stock preparer;   forming equipment in communication with the pulp and stock preparer, a pulp and water mixture line between the pulp and stock preparer and the forming equipment arranged to supply the forming equipment with the pulp and water mixture from the pulp and stock preparer, at least one recycling line arranged to recycle white water from the forming equipment to the pulp and stock preparer; and   ionization and oxidation equipment arranged to supply ozone gas to the pulp and water mixture line, where the ozone gas functions both as an oxidant and as an ioniozer chemically affecting the substances in the pulp and water mixture to becomes more reactive which thereby forms larger aggregates rendering the flocculation more effective in the pulp and water mixture.   
   
   
       14 . A device according to  claim 13 , further comprising a second ionization and oxidation equipment arranged to supply ozone gas to the at least one recycling line. 
   
   
       15 . A device according to  claim 14 , wherein the second ionization and oxidation equipment is arranged in close connection to the pulp and stock preparer. 
   
   
       16 . A device according to  claim 13 , wherein the ionization and oxidation equipment comprises a reactor vessel having an inlet arranged to receive a pulp and water mixture, an ozone bubbling inlet arrange to bubble ozone gas in a lower part of the reactor vessel, a mixer arranged to mix the pulp and water mixture, and the ozone gas, a first outlet for the ionization and oxidation treated pulp and water mixture, and second outlets at the upper part of the reactor vessel arranged to receive any remaining ozone gas. 
   
   
       17 . A device according to  claim 13 , wherein the first ionization and oxidation equipment is connected to the pulp and water mixture line in close connection to the forming equipment.