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Multiscale modeling of biomass pretreatment for optimization of steam explosion conditions
Alternative TitleChem. Eng. Sci.
Zhang, Yuzhen; Chen, Hongzhang
2012-06-18
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume75Issue:75Pages:177-182
AbstractSteam explosion is the most cost-effective and widely used method for pretreating lignocellulosic materials. Unlike other hydrothermal pretreatment technologies, it is characterized by physical tearing effects. The severity factor cannot represent the effects of instantaneous decompression but it can depict the effects of high-temperature cooking. Using the theories of heat transfer, momentum transfer, and brittle fracture mechanics as bases, we analyze physical tearing in instantaneous decompression. Moisture content of materials w(opt) is optimized by maintaining temperature T (T <-> w(opt)), and chip size d is optimized with discharge port area A (A proportional to d(2)). The chip size, moisture content of materials, and discharge port area are then incorporated into the severity factor. The enriched severity factor and the relationship among operation parameters, material property parameters, and equipment parameters serve as engineering references in designing the equipment and selecting the conditions for steam explosion technology. Such equipment and conditions are suitable for use under any given set of materials, products, and treatment targets. (c) 2012 Elsevier Ltd. All rights reserved.; Steam explosion is the most cost-effective and widely used method for pretreating lignocellulosic materials. Unlike other hydrothermal pretreatment technologies, it is characterized by physical tearing effects. The severity factor cannot represent the effects of instantaneous decompression but it can depict the effects of high-temperature cooking. Using the theories of heat transfer, momentum transfer, and brittle fracture mechanics as bases, we analyze physical tearing in instantaneous decompression. Moisture content of materials w(opt) is optimized by maintaining temperature T (T <-> w(opt)), and chip size d is optimized with discharge port area A (A proportional to d(2)). The chip size, moisture content of materials, and discharge port area are then incorporated into the severity factor. The enriched severity factor and the relationship among operation parameters, material property parameters, and equipment parameters serve as engineering references in designing the equipment and selecting the conditions for steam explosion technology. Such equipment and conditions are suitable for use under any given set of materials, products, and treatment targets. (c) 2012 Elsevier Ltd. All rights reserved.
KeywordSteam Explosion Biomass Pretreatment Momentum Transfer Biochemical Engineering Process Control Energy
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2012.02.052
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCOMPLEX-SYSTEMS ; WHEAT-STRAW ; PHENOMENOLOGICAL KINETICS ; SEVERITY PARAMETER ; FRACTIONATION ; HYDROLYSIS ; LIGNOCELLULOSICS ; ETHANOL ; SSF ; SHF
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000303826800018
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6403
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yuzhen,Chen, Hongzhang. Multiscale modeling of biomass pretreatment for optimization of steam explosion conditions[J]. CHEMICAL ENGINEERING SCIENCE,2012,75(75):177-182.
APA Zhang, Yuzhen,&Chen, Hongzhang.(2012).Multiscale modeling of biomass pretreatment for optimization of steam explosion conditions.CHEMICAL ENGINEERING SCIENCE,75(75),177-182.
MLA Zhang, Yuzhen,et al."Multiscale modeling of biomass pretreatment for optimization of steam explosion conditions".CHEMICAL ENGINEERING SCIENCE 75.75(2012):177-182.
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