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Development of a new energy-saving thermomechanical pulping process; Uuden energiaa saeaestaevaen hierreprosessin kehittaeminen

Technical Report:

Abstract

The Finnish Pulp and Paper Research Institute has run in a technically unique refiner which offers the preconditions for a less energy-intensive TMP process. Sunds Defibrator Jylhae Oy participated in this venture, by designing and constructing a new RGP 42 DD/CD refiner. This new equipment represents the highest level of refiner mechanical pulping research and development internationally. When extensive test runs had been completed, The Finnish Pulp and Paper Research Institute assessed the energy-saving potential of a new multiple-stage refiner mechanical pulping process developed by the institute. The research test runs indicate that the energy requirement is reduced by 10-15 % with the new equipment if the process is divided into stages which can be optimized separately. The most significant feature of this new multiple-stage process is an extremely high rotation speed and high temperature in the defibration stage, and a lower rotation speed and a lower temperature in the final stages of the process. Savings of 15-20 % can probably be achieved by continuing to optimize the process; for a large magazine paper mill, this means saving 60-80 GWh a year. The most important application of the new process equipment at the moment is a technology project introduced in  More>>
Publication Date:
Dec 31, 1993
Product Type:
Technical Report
Report Number:
KCL-KUITU-32
Reference Number:
SCA: 320303; PA: FI-94:003541; EDB-95:008100; SN: 94001284786
Resource Relation:
Other Information: DN: FIBRE Research Programme; PBD: 1993
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PAPER INDUSTRY; ENERGY CONSERVATION; OPTIMIZATION; ELECTRIC POWER; ENERGY CONSUMPTION; REFINING; 320303; EQUIPMENT AND PROCESSES
OSTI ID:
10102534
Research Organizations:
Finnish Pulp and Paper Research Inst., Espoo (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ON: DE95717482; CNN: Project KTM-201/881/87; TRN: FI9403541
Availability:
OSTI; NTIS
Submitting Site:
FI
Size:
120 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Sundholm, J, and Mannstroem, M. Development of a new energy-saving thermomechanical pulping process; Uuden energiaa saeaestaevaen hierreprosessin kehittaeminen. Finland: N. p., 1993. Web.
Sundholm, J, & Mannstroem, M. Development of a new energy-saving thermomechanical pulping process; Uuden energiaa saeaestaevaen hierreprosessin kehittaeminen. Finland.
Sundholm, J, and Mannstroem, M. 1993. "Development of a new energy-saving thermomechanical pulping process; Uuden energiaa saeaestaevaen hierreprosessin kehittaeminen." Finland.
@misc{etde_10102534,
title = {Development of a new energy-saving thermomechanical pulping process; Uuden energiaa saeaestaevaen hierreprosessin kehittaeminen}
author = {Sundholm, J, and Mannstroem, M}
abstractNote = {The Finnish Pulp and Paper Research Institute has run in a technically unique refiner which offers the preconditions for a less energy-intensive TMP process. Sunds Defibrator Jylhae Oy participated in this venture, by designing and constructing a new RGP 42 DD/CD refiner. This new equipment represents the highest level of refiner mechanical pulping research and development internationally. When extensive test runs had been completed, The Finnish Pulp and Paper Research Institute assessed the energy-saving potential of a new multiple-stage refiner mechanical pulping process developed by the institute. The research test runs indicate that the energy requirement is reduced by 10-15 % with the new equipment if the process is divided into stages which can be optimized separately. The most significant feature of this new multiple-stage process is an extremely high rotation speed and high temperature in the defibration stage, and a lower rotation speed and a lower temperature in the final stages of the process. Savings of 15-20 % can probably be achieved by continuing to optimize the process; for a large magazine paper mill, this means saving 60-80 GWh a year. The most important application of the new process equipment at the moment is a technology project introduced in 1992 to give magazine papers based on thermomechanical pulp a competitive edge. This venture is part of the Sustainable Paper programme and aims at reducing the energy consumption of refiner pulps used for magazine paper, as indicated by the results of this project, and at improving the prospects for TMP paper in quality competition}
place = {Finland}
year = {1993}
month = {Dec}
}