Patent · US Active

Feeding system having parallel pumps for a continuous digester

US8709212B2 · kind B2 · utility

1Cited by

3References

9Claims

0Family size

Assignee

VALMET AKTIEBOLAG · FI

Inventors

Anders Samuelsson · Sundsvall, SE
Jonas Saetherasen · Sundsvall, SE
Daniel Trolin · Karlstad, SE

Key dates

Filing date	Mar 20, 2009
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Oct 19, 2030

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21C3/24
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel. The transfer to the top of the digester takes place without a conventional top separator. The system makes it possible to provide a feed system with an improved accessibility and operational reliability, and to operate the main part of the pumps at optimal efficiency even if the production capacity is reduced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.