منابع مشابه
Refining the anomaly consistency condition
In the extended antifield formalism, a quantum BRST differential for anomalous gauge theories is constructed. Local BRST cohomological classes are characterized, besides the form degree and the ghost number, by the length of their descents and of their lifts, and this both in the standard and the extended antifield formalism. It is shown that during the BRST invariant renormalization of a local...
متن کاملThe effect of rotor position on pulp properties in a two- zoned low consistency refiner
Earlier studies have shown that plate gaps are sometimes unequal in two-zoned low consistency refiners and that unequal gaps render unevenly refined pulp. It is also known that optimisation of plate gap in low consistency refining leads to improved energy efficiency. In this work, trials were made in mill scale in a modern TMP line equipped with a prototype 72 inch TwinFlo low consistency refin...
متن کاملFiber trapping in low-consistency refining: new parameters to describe the refining process
Fiber trapping in refining has been defined by the fraction f of the bar edges that trap fibers as they cross, and by the number of fibers i trapped under each section of bar. From these parameters, equations were derived to calculate the number of impacts that a fiber undergoes during refining and the maximum force experienced during each impact. Refiner power versus gap was measured for a con...
متن کاملThesis for the degree of LOW CONSISTENCY REFINING PROCESS CONDITIONS A Mid Sweden University, SE Mid Sweden University Licentiate of Technology, Sundsvall 20 OF MECHANICAL PULP ND ENERGY EFFICIENCY
The thesis is focussed on low consistency (LC) refining of mechanical pulp. The research included evaluations of energy efficiency, development of pulp properties, the influence of fibre concentration on LC refining and effects of rotor position in a two-zoned LC refiner. Trials were made in mill scale in a modern TMP line equipped with an MSD Impressafiner for chip pre-treatment, double disc (...
متن کاملSoft Sensors for Pulp Freeness and Outlet Consistency Estimation in the Alkaline Peroxide Mechanical Pulping (APMP) High-Consistency Refining Process
In the mechanical pulping process, some process state and product quality variables are difficult to measure on-line. In this paper, soft sensors were used to estimate Canadian Standard Freeness (CSF) and outlet consistency (Cout) after the high consistency refining stage of the alkaline peroxide mechanical pulping (APMP) process. After the secondary variables for modeling that are readily avai...
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ژورنال
عنوان ژورنال: JAPAN TAPPI JOURNAL
سال: 1971
ISSN: 0022-815X,1881-1000
DOI: 10.2524/jtappij.25.12_626