FILLING THE GAP–IMPROVED ENERGY EFFICIENCY AND QUALITY STABILITY IN MECHANICAL PULP REFINING
As energy prices will continue to rise long term it is very important to come up with suggestions to efficiency-improving solutions based on modifications of the existing refining technology without large investments. There are several suggestions to relatively large modifications in design of refiner plate patterns, chip pre-treatment and chip feed strategies to existing refiners, but these suggestions are difficult to implement, as the knowledge of the mechanisms prevalent in the refiner gap is insufficient.To solve this problem FSCN and CIT have started research project, 揊illing the Gap? together with the companies; Dametric, Holmen, Metso, Norske Skog, P鰕ry, SCA and Stora-Enso co-financed by the Swedish authorities; Vinnova and Swedish Energy Agency. The objective of this research project is to show how to improve the electric energy efficiency of chip refining by means of utilizing the fundamental knowledge of wood material properties relevant for chip refining i.e. refining hypotheses in combination with output variable knowledge from new and improved refining zone measurement methods as; exact gap distance, temperature-, force- and fibre material radial distributions combined with the traditional out/in-put variables used. These data will be utilized in two ways: 1) Optimize refining conditions in a static way, i.e. of conditions to maximize energy efficiency to reach the functional fibre properties aimed for. 2) Maximize process stability and minimize quality variations to these functional fibre properties. This paper reports a general overview from the preliminary results of these evaluations.
Per Engstrand Anders Karlstr(o)m
FSCN – Mid Sweden University,SE-85170 Sundsvall,Sweden Chalmers Industriteknik, Chalmers University of Technology,Gothenburg,Sweden
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
546-549
2011-06-26（万方平台首次上网日期，不代表论文的发表时间）