Catalyzed interstage sulfonation CTMP process of aspen wood.Application: Mills can be use a catalyzed CTMP CTMP Comprehensive Treatment and Management Plan CTMP Chemico-Thermomechanical Pulping CTMP CONUS Telephone Modernization Program CTMP Cisco Technology Migration Program CTMP Competitive Technology Migration Plan CTMP Cisco Technology Migration Plan process with an interstage sulfonation process for aspen pulp to obtain a higher tensile strength tensile strength Ratio of the maximum load a material can support without fracture when being stretched to the original area of a cross section of the material. When stresses less than the tensile strength are removed, a material completely or partially returns to its and better optical properties compared to spruce spruce, any plant of the genus Picea, evergreen trees or shrubs of the family Pinaceae (pine family) widely distributed in the Northern Hemisphere. The needles are angular in cross section, rather than flattened as in the related hemlocks and firs. TMP TMP (thymidine monophosphate): see thymine. . This research investigates the anthraquinone anthraquinone /an·thra·quin·one/ (an?thrah-kwin´on) 1. the 9,10 quinone derivative of anthracene, used in dye manufacture. 2. any of the derivatives of this compound, some of which are dyes. (AQ) catalyzed chemithermomechanical pulping (CTMP) of aspen wood by using an interstage sulfonation process and compares the quality of pulp with that of black spruce thermomechanical pulp (TMP). Previous studies confirmed that aspen is very suitable for CTMP because of availability, ease of processing and pulp quality. Work done so thr has shown that AQ can increase the delignification rate, reduce refiner energy, and improve the quality of pulp. We determined preliminary process conditions in the laboratory and obtained a target yield and pH with 6% [Na.sub.2]S[O.sub.3], 2% NaOH, and 0.1% AQ. Pulping experiments were carried out in Paprican's pilot plant. Tensile strength of AQ pulp is about 20 % higher than that of control. AQ pulp also developed higher tensile strength than those of control and consumed less energy to achieve it. Conclusions There is a strong indication that AQ can considerably improve the quality of aspen CTM CTM Continuum (gaming) CTM Community Trade Mark (Europe) CTM Cisco Transport Manager CTM Confederacion de Trabajadores de Mexico (Spanish: Confederation of Mexican Workers) pulp when interstage sulfonation is used, but it requires very coarse refining of chips in the first stage. When aspen-AQ CTM pulps were compared with black spruce TMP, at equivalent freeness, it yeas observed that it required 15% less energy to produce aspen pulp than that of the TMP. After the evaluation of the strength properties of pulps prepared by mixing aspen-AQ CTMP, black spruce TMP, and DIP in different proportions, we concluded that up to 20% of spruce TMP could be replaced with the aspen-AQ CTMP in typical newsprint newsprint low grade paper used for newspapers. Old newspapers are fed to cattle as an alternative roughage and may occasionally be ingested by dogs. Significant amounts of lead are accumulated in tissues; no cases of poisoning have been recorded in cattle, though it has been furnish without affecting the quality of pulp. Ulkem is a research associate and Kubes is Paprican adjunct professor in the chemical engineering department at McGill University's Pulp and Paper Research Center, 3420 University Street, Montreal, QC H3A 2A7, Canada; Wang is R&D manager in Tembec's Beijing Representative Office, Suite 1901A, Capital Mansion, No. 6 Xin Yuan Nan Road, Chao Yang District, Beijing, P.R. of China 100004. Email Ulkem at nilgun.ulkem@mcgill.ca |
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