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| Pyrolysis Characteristics of Cotton Linter Pulping Black Liquor |
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| DOI：10.11981/j.issn.1000-6842.2016.02.29 |
| Key Words:cotton linter pulping black liquor； black liquor solids; alkali lignin； polysaccharide； pyrolysis |
| Fund Project:国家自然科学基金(31270626，31270627，31370580,31470602)；山东省重大科技专项（2014ZZCX09101，2015ZDZX09002）；泰山学者工程专项。 |
| Author Name | Affiliation | | 裴丽华 | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 | | 杨桂花* | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 | | 蒋启蒙 | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 | | 刘小宁 | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 | | 张中山 | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 | | 陈嘉川 | 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南,250353 |
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| Abstract: |
| Black liquor solids(BLS) of cotton linter pulping with different temperature rising rates were analyzed using thermogravimetric analysis. The pyrolysis properties of BLS, alkali lignin(AL) and polysaccharide(PLS) were compared at the same temperature rising rate. It was found that there were four stages in pyrolysis process of BLS and AL, three stages in pyrolysis process of PLS, all of which had rapid weight loss in the second stage. Pyrolysis properties of BLS were different from AL and PLS, due to the aliphatic carboxylic acids and alkali metal salts in black liquor had certain effects on the pyrolysis characteristics of BLS. Pyrolysis analysis of decomposition of organic matter in the second stage by using the Coats-Redfern method indicated that compared with PLS, the AL had greater effect on the pyrolysis properties of the BLS of cotton linter pulping． |
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