发酵法溶剂生产中醪塔的节能减排模拟  

Simulation of energy conservation and emission reduction of prefractionator in menstruum fermentation

作　　者：王洪海[1] 李春利[1] 王荣良[1] 张鹏[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《现代化工》2009年第6期63-65,共3页Modern Chemical Industry

摘　　要：利用流程模拟软件PRO/Ⅱ对发酵法制取丙酮、丁醇和乙醇过程中的醪塔进行了节能减排模拟优化。考察了理论板数、进料位置等对蒸汽消耗量及废水排放的影响;研究了增加侧采工艺和热泵回收工艺对节能减排的促进作用。结果表明:醪塔较优的理论板数为40块、进料位置位于第19块理论板;增加侧采工艺后能使后续精馏系统中的水循环量减少50%以上;增加热泵回收工艺后,可节约新鲜蒸汽消耗45%以上,并可提高废水排放标准20%以上。模拟计算结果被推广到实际生产中,生产数据与模拟数据吻合良好,节能减排效果明显。Energy conservation and emission reduction of prefractionator in menstruum （acetone, butanol and ethanol or ABE） production by the fermentation is studied using processing simulative software-PRO/Ⅱ. The effects of vapor consumption and residual solvent content in wastewater are observed when the theoretical stage number and feed position are changed. Promotion of added side withdrawing technology and heat pump recovery process for energy conservation and errfission reduction of the prefractionator is made. The results show that the suitable theoretical stage number is 40 and the optimal feed position is at 19. It is also indicate that the circulation of water volume in the latter distillation system has been reduced by over 50% when the side withdrawing technology is added. The consumption of fresh vapor has been saved by more than 45 % and the residual solvent content in wastewater has been reduced by over 20% when the heat pump recovery process is introduced. The numerical simulative result has been applied into industrial production. The data of simulation and production inosculate well. The effect of energy conservation and emission reduction is obvious.

关 键 词：醪塔 节能减排 侧采 热泵 模拟 

分 类 号：TQ018[化学工程]