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| Catalytic Pyrolysis Characteristics and Kinetics of Deinking Sludge |
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| DOI：10.11981/j.issn.1000-6842.2014.04.30 |
| Key Words:deinking sludge；thermogravimetric analysis；catalyzed pyrolysis；kinetics |
| Fund Project:国家自然科学基金(31270627,31370580)；山东省自主创新专项(2012CX70101)；山东省自然科学基金项目(ZR2011CM011)；山东省泰山学者项目(2605)。 |
| Author Name | Affiliation | | 王圆圆1 | 1.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1,* | 1.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1 | 1.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 | | 张凤山2 | 2.华泰集团有限公司,山东广饶,257335 | | 吕高金1 | 1.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 | | 王雪娇1 | 1.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: |
| The pyrolysis characteristics of deinking sludge at different heating rates and with different catalysts were studied using thermogravimetric analysis (TG). The curves of TG & DTG were simulated using the method of Coats-Redfern integral, and the dynamical model was established,and dynamical parameters of pyrolysis of deinking sludge were calculated. The results showed that the dynamical model of the pyrolysis process was expressed by three stages parallel reaction in first-order. During the catalytic pyrolysis process of deinking sludge,for the low-temperature (220~370℃) stage,the catalytic role was∶MgCl2> CaCl2> ZnCl2>NaCl. The activation energy and the maximum value of DTG decreased by addition of MgCl2, CaCl2 and ZnCl2. MgCl2, CaCl2, ZnCl2 and NaCl presented the similar catalysis behavior in the high-temperature (600~750℃) stage, which made the pyrolysis curve of deinking sludge pyrolysis to move to the lower temperature region and the maximum value of DTG decreased obviously.Compared to the deinking sludge without catalysts,the activation energy of the deinking sludge added catalysts decreased in both low-temperature stage and high-temperature stage, the activation energy in high-temperature stage reduced by more than 50%. |
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