A lime kiln is used to convert lime mud into lime for reuse in the causticizing plant of the kraft recovery process. Many of the problems encountered in lime kiln operations can be related to kiln chemistry, including TRS and SO2 emissions, dusting, ringing and refractory brick thinning. Understanding the composition and thermal behaviour of lime mud and the major chemical reactions involved is...

The Department of Energy Freedom Car Program has shown that domestic vehicle fuel consumption can be dramatically decreased by reducing the overall weight of production vehicles. Carbon fiber composites provide an attractive route to this goal. Significant automotive use of carbon fiber technology will require substantial increases in fiber production coupled with decreases in fiber price to ~$...

In this work, the aim was to study distribution and accumulation of non-process elements (NPEs) in recovery cycle Finnish pulp mills look at whether geographical location (North vs. South) correlates with current NPE levels. addition, a comparison older similar measurements made an attempt analyze reasons behind differences most typical elements, aluminum (Al), silicon (Si), calcium (Ca), phosp...

The authors studied a cohort of 30,157 male pulp and paper workers in British Columbia, Canada. Of these, 20,373 worked in kraft mills only, 5,249 in sulfite mills only, and 4,535 in both kraft and sulfite mills. All workers with at least 1 year of employment on January 1, 1950, or thereafter until December 31, 1992, were studied. Standardized mortality ratios (SMRs) were used to compare the mo...

Chemical modification of eucalypt lignin was investigated during kraft pulping and chlorine-free bleaching by comparing milled wood lignin, kraft lignin, and pulp enzymatic residual lignins. The syringyl-to-guaiacyl ratio (S/G) from analytical pyrolysis slightly changed during pulping and bleaching (S/G, 3-4) but was higher in the kraft lignin. Semiquantitative heteronuclear single quantum corr...

Das Robotersystem für die Transkranielle Magnetstimulation (TMS) ermöglicht eine präzise und wiederholbare Positionierung der TMS-Spule auf dem Kopf des Patienten. Um einen sicheren Einsatz des Roboters zu gewährleisten, ist oftmals eine manuelle Vorpositionierung des Roboters nötig, um einen gewünschten Stimulationspunkt zu erreichen. Mittels der Kraft-Momenten-Steuerung (KMS) ist es möglich d...

Abstract In this work, a techno-economic assessment of carbon dioxide capture from limekiln flue gas pulp and paper mill (Mill A) linerboard B) using Monoethanolamine (MEA) absorption desorption process was carried out. We coupled the ASPEN Plus simulator with derivative-free optimization (DFO) tool to identify optimal configuration for minimizing total cost. The costs were calculated CAPCOST, ...