| Title: | Effective treatment of residue of acrylic acid production using a fluid-bed/fixed-bed system with low energy consumption |
| Author(s): | Liu B; Liu Z; Xu Y; Sun Y; Yu Y; Zheng H; |
| Address: | "School of Environmental Sciences and Engineering, Nanjing Tech University, Nanjing, China. College of Urban Construction, Nanjing Tech University, Nanjing, China. Graduate School at Shenzhen, Tsinghua University, Shenzhen, China. Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, China" |
| ISSN/ISBN: | 1554-7531 (Electronic) 1061-4303 (Linking) |
| Abstract: | "In order to effectively deal with large amounts of complex organic pollutants in the harmful distillation residues with low energy consumption, a novel two-stage fluid-bed/fixed-bed system was designed to catalyze oxidation of acrylic acid production residue. The effects of fluid-bed temperature, gaseous hourly space velocity (GHSV), and oxygen excess rate on the purification of acrylic acid production residue in the two-stage fluid-bed/fixed-bed system were studied to prove the feasibility of the method. The chemical oxygen demand (COD) of the discharged liquid was <100 mg/L, and the volatile organic compounds (VOCs) of the discharged gas amounted to <10 mg/m(3) with a fluid-bed temperature of 380 degrees C, emulsified residue's GHSV of 0.28 L/(kg(cat) .hr), and O(2) excessive rate of more than 4.32. The result of techno-economics indicates the feasibility of the long-term operation of process. Results further illustrate the advantages of the proposed two-stage fluid-bed/fixed-bed system, which can treat acrylic acid production residue with high efficiency (COD < 100 mg/L, VOCs < 10 mg/m(3) ) and low energy consumption (~24,856 kw.hr/ton) in the chemical industry. PRACTITIONER POINTS: A novel two-stage fluid-bed/fixed-bed system was developed for acrylic acid production residue treatment. No extra energy was required at low temperature in the two-stage fluid-bed/fixed-bed system. Purification of residue could be finished at low temperature by the catalytic pyrolysis and catalytic oxidation process. The two-stage system did not produce toxic gases and particulate matters" |
| Keywords: | "*Acrylates Biological Oxygen Demand Analysis Bioreactors *Gases Temperature Waste Disposal, Fluid acrylic acid fixed-bed fluid-bed residue;" |
| Notes: | "MedlineLiu, Biming Liu, Zhiying Xu, Yanhua Sun, Yongjun Yu, Yang Zheng, Huaili eng 16KJA610002/University Science Research Project of Jiangsu Province/ JNHB-038/2018 Six Talent Peaks Project of Jiangsu Province/ 51508268/National Natural Science Foundation of China/ 2017YFB0602505/National Key Research and Development Project of China during the 13th Five-Year Plan Period/ 2019/11/20 Water Environ Res. 2020 Jun; 92(6):865-872. doi: 10.1002/wer.1278. Epub 2019 Dec 5" |
