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E-raamat: Pulp and Paper Industry: Chemical Recovery

(Consultant-Pulp and Paper, Kanpur, India)
  • Formaat: EPUB+DRM
  • Ilmumisaeg: 26-Aug-2016
  • Kirjastus: Elsevier Science Publishing Co Inc
  • Keel: eng
  • ISBN-13: 9780128111048
  • Formaat - EPUB+DRM
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  • Formaat: EPUB+DRM
  • Ilmumisaeg: 26-Aug-2016
  • Kirjastus: Elsevier Science Publishing Co Inc
  • Keel: eng
  • ISBN-13: 9780128111048

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Pulp and paper Industry: Chemical Recovery examines the scientific and technical advances that have been made in chemical recovery, including the very latest developments. It looks at general aspects of the chemical recovery process and its significance, black liquor evaporation, black liquor combustion, white liquor preparation and lime reburning. It also describes the technologies for chemical recovery of nonwood black liquor, as well as direct alkali regeneration systems in small pulp mills. In addition, it includes a discussion of alternative chemical recovery processes, i.e. alternative causticisation and gasification processes and the progress being made in the recovery of filler, coating colour and pigments. Furthermore, it discusses the utilisation of new value streams (fuels and chemicals) from residuals and spent pulping liquor, and the environmental challenges.

  • Thorough and in depth coverage of scientific and technical advances in chemical recovery in pulp making
  • Discusses alternative chemical recovery processes, i.e. alternative causticisation and gasification processes
  • Progress being made in the recovery of filler, coating colour and pigments
  • Utilisation of new value streams (fuels and chemicals) from residuals and spent pulping liquor
  • Discusses Environmental challenges (Air Emissions, Mill closure)
  • Presents ways in which the economics, energy efficiency, and environmental protection associated with the recovery process can be improved

Muu info

Explores the latest scientific and technical advances and environmental challenges impacting chemical recovery in the pulp and paper industry
List of Figures
ix
List of Tables
xi
Preface xiii
Acknowledgments xv
List of Abbreviations
xvii
Chapter 1 Introduction
1(24)
1.1 Pulp and Papermaking Processes
2(18)
1.1.1 Wood Yard Operation
2(3)
1.1.2 Pulping Processes
5(6)
1.1.3 Chemical Recovery in Pulp Mills
11(7)
1.1.4 Bleaching
18(2)
1.1.5 Stock Preparation and Papermaking
20(1)
1.2 Recent Trends in Chemical Recovery
20(5)
References
22(3)
Chapter 2 Properties, Composition, and Analysis of Black Liquor
25(14)
2.1 Properties and Composition of Black Liquor
25(10)
2.2 Analysis of Black Liquor
35(4)
References
37(2)
Chapter 3 Evaporation of Black Liquor
39(28)
3.1 Equipment
41(8)
3.1.1 Rising Film Evaporators
43(1)
3.1.2 Falling Film Evaporators
44(3)
3.1.3 Forced Circulation Evaporators
47(2)
3.2 Multiple Effect Evaporation
49(2)
3.3 Production of Black Liquor of High Solids
51(3)
3.4 Other Methods Used for Concentration of Black Liquor
54(4)
3.4.1 Vapor Compression Evaporation
55(1)
3.4.2 Blow Heat Evaporation
56(1)
3.4.3 Flash Steam Evaporation
57(1)
3.5 Modern Evaporation
58(1)
3.6 Scaling and Scale Control
58(5)
3.7 Evaporator Troubleshooting
63(1)
3.8 Instrumentation and Process Control
63(1)
3.9 Other Operations
64(3)
References
64(3)
Chapter 4 Combustion of Black Liquor
67(34)
4.1 Recovery Boiler
68(7)
4.2 Selection Criteria
75(3)
4.3 Black Liquor Droplet Combustion
78(4)
4.4 Combustion Behavior of Different Black Liquors
82(2)
4.5 Operation of Recovery Boiler
84(3)
4.6 Selection of the Main Parameters for Recovery Boiler
87(1)
4.7 Nonprocess Elements in the Recovery Cycle
88(1)
4.8 Safety
89(1)
4.9 Modern Recovery Practices
90(6)
4.10 Future of Recovery Boiler Technology
96(5)
References
97(4)
Chapter 5 Preparation of White Liquor
101(30)
5.1 Overview
101(3)
5.2 Characteristics of the Green and White Liquors
104(4)
5.3 Green Liquor Processing
108(6)
5.4 Recausticizing
114(12)
5.4.1 Modifications of White Liquor
125(1)
5.5 Modern Recausticizing
126(1)
5.6 Process Control and Automation
126(5)
References
128(3)
Chapter 6 Reburning of Lime Mud
131(616)
6.1 Process Overview
131(3)
6.2 Lime Reburning Kiln
134(10)
6.3 Fluidized Bed Lime Calciner
144(1)
6.4 Flash Calcining
145(602)
References
145(2)
Chapter 7 Recovery of Chemicals From Nonwood Black Liquor
147(1)
7.1 Desilication of Black Liquor
148(4)
7.2 Desilication of Green Liquor
152(2)
7.3 Soda Recovery
154(5)
References
156(3)
Chapter 8 Alternative Recovery Processes
159(36)
8.1 Gasification Processes
159(2)
8.2 MTCI Fluidized Bed Gasification
161(2)
8.3 Chemrec Gasification
163(8)
8.3.1 Atmospheric System
164(1)
8.3.2 Pressurized System
165(6)
8.4 Catalytic Hydrothermal Gasification of Black Liquor
171(1)
8.5 Environmental Impact
172(4)
8.6 Causticization Processes
176(1)
8.7 Autocausticization
177(4)
8.8 Borate Autocausticization With Black Liquor Gasification
181(1)
8.9 Direct Causticization
181(14)
8.9.1 Direct Alkali Regeneration System Process
183(4)
8.9.2 Direct Causticization Using Titanates
187(2)
References
189(6)
Chapter 9 Recovery of Coating Color, Pigments, and Fillers
195(10)
References
203(2)
Chapter 10 Chemicals and Fuels From Residuals and Spent Pulping Liquors
205(22)
10.1 Lignin From Black Liquor
205(10)
10.2 Other Products
215(2)
10.3 Future Possibilities
217(10)
References
218(9)
Chapter 11 Environmental Issues and Challenges
227(10)
References
228(3)
Chapter 12 Future Perspectives
231(2)
References
233(2)
Index 235
Dr. Pratima Bajpai is a Pulp and Paper Consultant with a 40-year research career spanning institutions like the National Sugar Institute, University of Saskatchewan, and Thapar Research Centre. She has held visiting positions at the University of Waterloo and Kyushu University. Recognized among the World's Top 2% Scientists by Stanford University for five consecutive years, her expertise includes industrial biotechnology, environmental biotechnology, and pulp and paper. She has authored several advanced technical books and contributed to numerous publications, making significant contributions to her field. Dr. Bajpai is a leading expert in industrial biotechnology and environmental aspects of pulp and paper industries.