Study on the product characteristics and release law of pyrolysis of wheat straw black liquor

doi:10.3969/j.issn.1000-2006.2013.04.023

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2013, Vol. 37 ›› Issue (04): 121-126.doi: 10.3969/j.issn.1000-2006.2013.04.023

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Study on the product characteristics and release law of pyrolysis of wheat straw black liquor

DAI Tao, WU Shubin^*, GUO Daliang, ZHAO Yushuang, LI Bo

State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China

Online:2013-08-18 Published:2013-08-18

Abstract

Abstract: Pyrolysis characteristics of black liquor solid(BLS)was studied on a tubular reactor furnace at 400-800 ℃. The composition of the liquid products and the distribution characteristics of gas products were analyzed by GC-MS and GC. The surface morphology of chars from BLS pyrolysis was characterized by SEM-EDS analysis. The release rule of important volatile matters in BLS pyrolysis process was discussed with the TG-FTIR. The results showed that the main components of the gas products were H₂,CO,CO₂ and C_xH_y(CH₄,C₂H₂,C₂H₄,C₂H₆), and phenols, ketones, alcohols, acids, furans, and aromatic compounds in liquid products. TG-FTIR results revealed that the release time of BLS pyrolysis products mainly concentrated in 1 000-2 000 s(300-600 ℃), at this time, the released products mainly include H₂O, CO₂, CH₄, CO and alkanes, aromatics, phenols, alcohols and ketone compounds.

CLC Number:

X793

DAI Tao, WU Shubin, GUO Daliang, ZHAO Yushuang, LI Bo. Study on the product characteristics and release law of pyrolysis of wheat straw black liquor[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2013, 37(04): 121-126.

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Study on the product characteristics and release law of pyrolysis of wheat straw black liquor

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