A process for upgradation of paper pulp quality
OwnerPrem Verma, Mattias Drotz +1inventors
InventorsPrem Verma, Mattias Drotz, Manish Verma
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Abstract
Described is a process for upgradation of pulp quality. The process for the upgradation of characteristics bulk and absorption capacity of bleached and non-bleached paper pulp wood and non-wood feedstocks for various applications. The resultant pulp can be utilized in sanitary applications, tissue making, packaging paper, specialty papers, dry and wet molded products, healthcare, food and liquid absorbers and print/publication paper.
Claims19
A process for upgradation of quality of pulp feedstock wherein the process steps comprising:
- i. feeding said pulp wet feedstock into a vaporized oxygen free apparatus at elevated pressure conditions in the range between 0.1 barg to 10 barg,
- ii. subjecting said feedstock to super-heated circulating vapor at a temperature in the range from 120° C. to 300° C., thereby modifying the properties of said feedstock,
- iii. discharging the modified pulp feedstock from said upgradation apparatus when the moisture content of the pulp feedstock is controlled between 5% to 30%,
- wherein, said process is characterized by the operating parameters of high temperature and pressure at a short residence time between 2 seconds to 3 minutes.
A pulp feedstock having a moisture content of 5% to 30%, and an absorption capacity of at least 15 g/g.
Dependencies are inferred from the claim text.