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Development and Integration of Acid Precipitation Based Lignin Biorefineries in Kraft Pulping Mills

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Academic year: 2021

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Figure

Figure 1-1: Number of people directly employed by the forest sector in the provinces of Quebec, British Columbia and Ontario (Statistics-Canada, 2013)
Table 1-1: Typical softwood and hardwood composition (Biermann, 1996) Component Percentage Hardwood Softwood Cellulose 40-50 45-50 Hemicellulose 15-35 10-25 Lignin 18-25 25-35 Extractives 1-5 3-8 Ash 0.4-0.8 0.2-0.5
Figure 3-1: Implementation of lignin extraction in the evaporator train of the Kraft mill according to configuration 1 and 2
Figure 3-2: Reduction of HHV of black liquor with the extraction of lignin
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