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Simulation and Exergy Analysis of Recovering Acetaldehyde and Ethanol in 1,3‐Butadiene Production
Author(s) -
Liu Cheng,
Wu Linlin,
Sun Huanhuan,
Chen Yixuan,
Geng Zhongfeng
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201800371
Subject(s) - exergy , acetaldehyde , raw material , process engineering , biofuel , ethanol , bottleneck , process (computing) , exergy efficiency , production (economics) , sensitivity (control systems) , waste management , 1,3 butadiene , energy consumption , chemistry , environmental science , pulp and paper industry , engineering , computer science , organic chemistry , catalysis , operations management , economics , macroeconomics , electrical engineering , electronic engineering , operating system
The production of butadiene from bioethanol as a non‐oil route has become a new research focus. Due to the incomplete conversion of ethanol and acetaldehyde in a single pass it is necessary to recycle the unreacted raw material. On the basis of economic optimization, a new acetaldehyde and ethanol recovery process with optimized operation conditions was developed. The purity of ethanol and acetaldehyde returned to the reactor can be guaranteed. The energy bottleneck of the process was identified by exergy analysis and improved by the proposed thermal integration. Sensitivity analysis was carried out to seek proper parameters for each operation unit. Total utilities cost, energy consumption, and exergy loss in the thermal integrated scheme could be significantly reduced.