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首页> 外文会议>Appita Annual Conference and Exhibition incorporating the ISWFPC(International Symposium on Wood, Fibre and Pulping Chemistry) vol.2: 13th ISWFPC Sessions - Oral Papers; 20050516-19; Auckland(NZ) >Volatile organic compound emissions during thermomechanical pulping of radiata pine
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Volatile organic compound emissions during thermomechanical pulping of radiata pine

机译：辐射松热机械制浆过程中挥发性有机化合物的排放

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摘要

Air emissions of volatile organic compounds (VOCs) were measured during a pilot plant simulation of thermomechanical (TMP) pulping of radiata pine. The dominant VOCs identified in air discharges were terpenes, methanol and acetic acid. These materials constituted 58%, 30% and 5% respectively of the total measured VOCs (0.27 g/kg o.d. chips). Lesser amounts of formaldehyde, formic acid, ethanol, acetaldehyde, resin acids, fatty acids, toluene and styrene were also identified in the air discharges. The different VOCs were emitted at different stages during processing. For example, while the biggest discharges of methanol occurred during chip presteaming, the terpenes were lost mainly during preparation of the primary pulp and the acetic acid with the steam produced during refining. Results also showed that the VOCs detected in the air emissions were also present, often at significantly higher levels, in the aqueous effluents.
机译：在辐射松的热机械（TMP）制浆试验工厂模拟期间，测量了挥发性有机化合物（VOC）的空气排放。在排气中发现的主要VOC是萜烯，甲醇和乙酸。这些材料分别占总VOC（0.27 g / kg外径碎片）的58％，30％和5％。在排气中还发现了少量的甲醛，甲酸，乙醇，乙醛，树脂酸，脂肪酸，甲苯和苯乙烯。在处理过程中的不同阶段排放了不同的VOC。例如，虽然最大的甲醇排放发生在切屑预汽蒸过程中，但萜烯主要在精制过程中产生的蒸汽与初级纸浆和乙酸制备过程中损失。结果还表明，在空气排放物中检测到的挥发性有机化合物含量也通常高得多。

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