Zobrazeno 31 - 40
of 118
pro vyhledávání: '"02"'
Publikováno v:
TAPPI Journal. 18:585-592
Impregnation of wood chips with acidic pulping liquors is improved when using short chip lengths. If the average wood chip length is too short, conventional chipping technology will generate excess small material, such as pin chips and fines. The pos
Publikováno v:
TAPPI Journal. 18:595-602
The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in wate
Autor:
Takuya Kubo, Satoshi Ogata
Publikováno v:
TAPPI Journal. 18:559-566
The reduction of pipe friction loss by adding drag-reducing agents has attracted attention as an aid to energy conservation. Drag-reducing agents induce drag reduction (DR) effects and should have a minimal environmental load, with natural resource-s
Publikováno v:
TAPPI Journal. 18:547-555
Tall oil is a valuable byproduct in chemical pulping of wood, and its fractions have a large spectrum of applications as chemical precursors, detergents, and fuel. High recovery of tall oil is important for the economic and environmental profile of c
Autor:
Erkki Hellen, Kristian Salminen, Janne T. Keränen, Harri Kiiskinen, Jaakko Asikainen, Timo Lappalainen
Publikováno v:
VTT Technical Research Centre of Finland-PURE
Kiiskinen, H, Salminen, K, Lappalainen, T, Asikainen, J, Keränen, J T & Hellen, E 2019, ' Progress in foam forming technology ', Tappi Journal, vol. 18, no. 8, pp. 499-510 . https://doi.org/10.32964/TJ18.8.499
Kiiskinen, H, Salminen, K, Lappalainen, T, Asikainen, J, Keränen, J T & Hellen, E 2019, ' Progress in foam forming technology ', Tappi Journal, vol. 18, no. 8, pp. 499-510 . https://doi.org/10.32964/TJ18.8.499
This paper summarizes recent developments in foam forming that were mainly carried out in pilot scale. In addition to improving the efficiency of existing processes and allowing better uniformity in material, a wide variety of raw materials can be ut
Publikováno v:
Koponen, A, Eloranta, H, Jäsberg, A, Honkanen, M & Kiiskinen, H 2019, ' Real-time monitoring of bubble size distribution in a foam forming process ', Tappi Journal, vol. 18, no. 8, pp. 487-494 . https://doi.org/10.32964/TJ18.8.487
Foam forming is an intricate option to lessen fiber flocculation and to get better energy and water efficiency when making fiber-based products. Developed during the 1970s, this approach has recently received renewed attention, mainly because it also
Publikováno v:
July 2019. 18:443-450
The rheological and dewatering behavior of an aqueous pigmented coating system not only affects the machine runnability but also affects the product quality. The current study describes the use of natural hydrocolloids derived from citrus peel fibers
Publikováno v:
July 2019. 18:409-414
Peroxide bleaching of softwood and hardwood (eucalypt) kraft pulps was performed in solutions of sodium bicarbonate (NaHCO3), sodium carbonate (Na2CO3), and sodium hydroxide (NaOH). The conventional P stage (hydrogen peroxide + sodium hydroxide; H2O2
Publikováno v:
June 2019. 18:381-389
The design and synthesis of natural and synthetic polymer blends have received recent and wide attention. These new biomaterials exhibit progress in properties required in the field of medicine and healthcare. Herein, the aim of present study is to f
Publikováno v:
TAPPI Journal. 18:287-293
Jute cutting, jute caddis, and cutting-caddis mixtures were prehydrolyzed by varying time and temperature to get about 90% prehydrolyzed yield. At the conditions of 170°C for 60 min of prehydrolysis, the yield for 100% jute cutting was 76.3%, while