Pyrolysis of black liquor for phenols and impact of its inherent alkali

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	Pyrolysis of black liquor for phenols and impact of its inherent alkali
	Peng, Cuina 1,2; Zhang, Guangyi 1; Yue, Junrong 1; Xu, Guangwen 1
刊名	FUEL PROCESSING TECHNOLOGY
	2014-11-01
卷号	127 期号:NOV,页码:149-156
关键词	Catalytic pyrolysis Phenols Cascade utilization Biochemical Alkaline catalyst Black liquor
ISSN号	0378-3820
其他题名	Fuel Process. Technol.
中文摘要	This study is devoted to investigating the potential of producing phenols via pyrolysis of lignin in black liquor (BL) by a fixed bed reactor at 350-550 degrees C. The chemicals in the pyrolysis liquid of both black liquor solid (BLS) and purified lignin (PL) from BL are mainly phenols including 4-methoxyphenol, 3,4-dimethoxyphenol, 2-methoxy-4-alkylphenols and alkylphenols. For pyrolysis of BLS, high temperature facilitated the breakage of methoxyl group(s). The highest liquid yield was 27 wt.% at 450 degrees C, and the content of phenols free of -OCH3 reached 55 wt.% in addition to a small amount of other phenols. The pyrolysis of PL with and without addition of alkali additives of NaOH and Na2CO3 at 450 degrees C verified that the alkali could promote the formation of phenols. The strong alkali of NaOH greatly promoted the production of phenols free of -OCH3, whereas the effect of Na2CO3 in this aspect was much less. Catalyzed by its self-contained alkalis, the pyrolysis of BLS had high contents of alkylphenols and phenol in the tar (organics). This shows the prospective for production of phenols from pyrolyzing black liquor, while the heating value of the pyrolysis residue was above 6300 kJ/kg to further support the cascade utilization of BLS. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	This study is devoted to investigating the potential of producing phenols via pyrolysis of lignin in black liquor (BL) by a fixed bed reactor at 350-550 degrees C. The chemicals in the pyrolysis liquid of both black liquor solid (BLS) and purified lignin (PL) from BL are mainly phenols including 4-methoxyphenol, 3,4-dimethoxyphenol, 2-methoxy-4-alkylphenols and alkylphenols. For pyrolysis of BLS, high temperature facilitated the breakage of methoxyl group(s). The highest liquid yield was 27 wt.% at 450 degrees C, and the content of phenols free of -OCH3 reached 55 wt.% in addition to a small amount of other phenols. The pyrolysis of PL with and without addition of alkali additives of NaOH and Na2CO3 at 450 degrees C verified that the alkali could promote the formation of phenols. The strong alkali of NaOH greatly promoted the production of phenols free of -OCH3, whereas the effect of Na2CO3 in this aspect was much less. Catalyzed by its self-contained alkalis, the pyrolysis of BLS had high contents of alkylphenols and phenol in the tar (organics). This shows the prospective for production of phenols from pyrolyzing black liquor, while the heating value of the pyrolysis residue was above 6300 kJ/kg to further support the cascade utilization of BLS. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	THERMAL-DEGRADATION ; CATALYTIC PYROLYSIS ; SUPERCRITICAL WATER ; BIOMASS PYROLYSIS ; LIGNIN PYROLYSIS ; GASIFICATION ; STRAW ; PRODUCTS ; RESIDUE ; PULP
收录类别	SCI
原文出处	://WOS:000340976500021
语种	英语
WOS记录号	WOS:000340976500021
公开日期	2014-09-30
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/11503]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Peng, Cuina,Zhang, Guangyi,Yue, Junrong,et al. Pyrolysis of black liquor for phenols and impact of its inherent alkali[J]. FUEL PROCESSING TECHNOLOGY,2014,127(NOV,):149-156.
APA	Peng, Cuina,Zhang, Guangyi,Yue, Junrong,&Xu, Guangwen.(2014).Pyrolysis of black liquor for phenols and impact of its inherent alkali.FUEL PROCESSING TECHNOLOGY,127(NOV,),149-156.
MLA	Peng, Cuina,et al."Pyrolysis of black liquor for phenols and impact of its inherent alkali".FUEL PROCESSING TECHNOLOGY 127.NOV,(2014):149-156.