In-line production method for paper making process
AssigneesStora Enso OYJ, Wetend Technologies Oy
InventorsOlavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Isto Heiskanen, Matti Vakevainen, Jari Rasanen
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Abstract
An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.
Claims10
An in-line production method for providing a liquid flow of two or more additives in a liquid flow of a short circulation and into a liquid flow of a paper making stock of a fiber web machine by feeding the liquid flow of the additives to the liquid flow of the short circulation, wherein the method further comprises allowing the two or more additives to react with one another, wherein the method comprises crystallizing a filler, and wherein the additives are carbon dioxide and lime milk, said carbon dioxide and lime milk being fed to the short circulation
- wherein
- a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of the liquid flow of the at least two additives, such that the additives reacts or start nucleation onto the surface of cellulose or precipitate on the surface of the microfibrillated cellulose and thereby form complexes with the microfibrillated cellulose or nanofibrillated polysaccharide.
An in-line production method for providing a liquid flow of two or more additives in a liquid flow of a short circulation and into a liquid flow of a paper making stock of a fiber web machine comprising:
- feeding carbon dioxide into the liquid flow of the short circulation of the paper making stock of the fiber web machine;
- feeding lime milk into the liquid flow of the short circulation;
- providing a suitable amount of a microfibrillated cellulose, a nanofibrillated polysaccharide, or a mixture thereof into the liquid flow of the short circulation substantially simultaneously with the feeding of the carbon dioxide and the feeding of the lime milk such that the carbon dioxide and lime milk begin to crystalize onto the microfibrillated cellulose, the nanofibrillated polysaccharide or the mixture thereof, into the microfibrillated cellulose, the nanofibrillated polysaccharide or the mixture thereof, or both.
Dependencies are inferred from the claim text.