共查询到20条相似文献,搜索用时 46 毫秒
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采用钌铱镀层钛电极为阳极,不锈钢为阴极,电Fenton法处理实际染料废水,采用单因子分析方法考察电极材料、电解时间、电流密度、极板间距、p H值、硫酸亚铁投加量、曝气量和搅拌速度等参数对染料废水COD去除率的影响。当电解时间为2 h,电流密度为1.2 A/mm2,极板间距为2.5 cm,p H值为2.5,硫酸亚铁投加量为0.5 g/L,曝气量为2 L/min,搅拌速度为1000 r/min,COD去除率达到47.84%。对电流密度、极板间距、p H值、硫酸亚铁投加量设计正交实验,极板间距、p H和硫酸亚铁投加量对电Fenton体系去除率的影响显著,电流密度对去除率影响不显著。 相似文献
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钛基锡锰钌氧化物阳极的电化学性能 总被引:1,自引:0,他引:1
通过热分解法制备不同钌含量的钛基锡锰氧化物阳极。X射线衍射谱图显示所制备的电极的主要相态为金红石型β—MnO2;循环伏安曲线与稳态极化曲线测试表明随着钌含量的增加,电极上的氧化电流也快速上升,析氯的选择性提高;适量掺混钌可以增加涂层表面析氯反应活性点的数目,当钌的质量分数为2%时,反应活性点的数目达到最大;电化学阻抗谱研究表明掺杂钌明显减小电极氧化物涂层的膜电阻R和析氯反应的电荷传递电阻Rct。有效地提高电极的电催化效果。钛基锡锰钌涂层电极可用于制备次氯酸钠,NaClO的生成速率为34.8mg/(L·min)。 相似文献
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《辽宁化工》2016,(6)
研究了钛基氧化物涂层电极应用在化工废水深度处理中的实验研究,经静态小试试验验证,论证哪种电极在化工废水深度处理中应用效果较好,并通过实验研究该电极在化工废水深度处理中应用时的最佳实验条件,分析钛基氧化物涂层电极在化工废水深度处理中工程应用的可行性,通过动态中试实验,验证其长期运行效果。实验结果表明:选用钌钛电极做阳极应用于化工废水深度处理可行性较高,电解时间为2 h。综合比较经济成本,在电流密度为25 m A/cm2时,处理成本较低,效果较好。动态中试实验效果分析,通过电解法进行化工废水深度处理,吨水处理成本约为9.8元,且运行较为稳定,不会产生二次污染,应用性较高。 相似文献
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介绍了Innovene和Hoirzone两种气相法聚丙烯(PP)工艺的概况,对两种工艺进行了对比。Horizone工艺采用的THC系列催化剂经预处理后各项性能优于Innovene工艺所用的CD型催化剂;在Innovene工艺反应器基础上,Horizone工艺的反应器增加了循环气喷嘴数量、搅拌桨叶数量以及内部构件,更有利于平稳生产;Horizone工艺通过简化气锁程序、增加深冷单元、优化工艺流程等方式,使在反应器内直接合成的抗冲击共聚PP的熔体流动速率高达26.00 g/10min;Innovene工艺的控制过程引入了生产负荷和产率比,自动化控制程度较Horizone工艺高;两种工艺的单耗基本持平,但Innovene工艺的循环水、电单耗和蒸汽单耗低于Horizone工艺。 相似文献
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组合式旋流干燥与旋风干燥工艺技术对比 总被引:2,自引:1,他引:1
分别从工艺技术方案、设备投资与能耗、生产过程控制及产品质量4个方面对目前世界上最先进的两种聚氯乙烯干燥技术进行对比,组合式旋流干燥在工艺技术方案上具有更大的合理性及优越性,设备投资少,能耗低,操作弹性大,对离心机下料含水及蒸流压力范围要求较宽。 相似文献
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对悬浮法和本体法PVC树脂生产方法进行了分析比较,并对2种方法制得的PVC树脂质量作了剖析,指出了本体法PVC树脂的优点和用途,以及对今后国内市场的作用。 相似文献
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Manabu Kano Shinji Hasebe Iori Hashimoto Hiromu Ohno 《American Institute of Chemical Engineers》2002,48(6):1231-1240
Multivariate statistical process control (MSPC) has been widely used for monitoring chemical processes with highly correlated variables. In this work, a novel statistical process monitoring method is proposed based on the idea that a change of operating condition can be detected by monitoring a distribution of process data, which reflects the corresponding operating conditions. To quantitatively evaluate the difference between two data sets, a dissimilarity index is introduced. The monitoring performance of the proposed method, referred to as DISSIM, and that of the conventional MSPC method are compared with their applications to simulated data collected from a simple 2 × 2 process and the Tennessee Eastman process. The results clearly show that the monitoring performance of DISSIM, especially dynamic DISSIM, is considerably better than that of the conventional MSPC method when a time-window size is appropriately selected. 相似文献
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Mohammed Sadaf Monjur M. M. Faruque Hasan 《American Institute of Chemical Engineers》2022,68(6):e17622
The recent revolution in shale gas has presented opportunities for distributed manufacturing of key commodity chemicals, such as methanol, from methane. However, the conventional methane-to-methanol process is energy intensive which negatively affects the profitability and sustainability. We report an intensified process configuration that is both economically attractive and environmentally sustainable. This flowsheet is systematically discovered using the building block-based representation and optimization methodology. The new process configuration utilizes membrane-assisted reactive separations and can have as much as 190% higher total annual profit compared to a conventional configuration. Additionally, it has 57% less CO2-equivalent greenhouse gas emission. Such drastic improvement highlights the advantages of building block-based computer-aided process intensification method. 相似文献
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