Simulation And Research On The Production Of MOS

Methyltris (methylethylketoximino) silane (MOS) can be used in the room temperature as vulcanized(RTV) silicon rubber and as the cross-linking agent for silicone glass rubber. It has the advantage of non-corrosiveness, less poisonousness and activity. It can shorten the time of solidifing the RTV silicon. It is widely used in the construction, electronics and automobile industry. Hence, MOS enjoys a promising market. In order to solve the problems in the production of MOS that the energy consumption in the treatment of wastewater with diacetylmonoxime (MEKO) is high, the added value of by-product in the process is low and the efficiency extraction separation of MOS and solvent is not high, a new process of treat wastewater and a new method of designing a extraction tower is developed based on the experimental determination of liquid-liquid equilibrium data, which can save energy effectively, protect environment and treat industrial waste.Firstly, the material balance sheet of the old process was provided to improve and simulate the process and calculate the energy consumption.Secondly, the process of the treatment of wastewater containing MEKO (Process1) was improved. The new process of extraction-distillation combined unit operation (Process2) was proposed. The LLE datas of MEKO-water-(iso-octanol) were measured under the invariable temperature in the plant using the actual operational material. The paramters of the NRTL equation were regressed by Matlab with the combination of Simplex Algorithm Methods and Quasi-Newton Methods according to the minimum of the global Gibbs energy, which meet the experimental data well.Thridly, the optimal equipment and the operation parameters of extraction tower T-2and distillation tower T-3of the Process2were determined by Aspen Plus.Then, the circulation process of tower T-2and T-3process were simulated. The heat duty of the distillation tower T-3was calculated.Fourthly, the evaporator E-4in Processl and the refining tower T-4in Process2were simulated. It showed that the energy saving in Process2is53.45%off in Process1on the results of calculation the heat duty of evaporator E-4, tower T-4and tower T-3. The latest process (Process3) proposed by changing the neutralization agent from sodium hydroxide to liquid ammonia has the advantage of avoiding waste water treatment, saving energy, the high additional value of by-products and52%off the cost.Finally, based on the literature, the flow and mass transfer characteristics of Kuhni extraction tower were analysised and design method of the industrial Kiihni extraction tower was established. Based on the measurement of LLE datas and related physical datas, the relevant structure parameters of the extraction tower T-1was calculated, and the results will be leading the industry practise. It is effective that the solvent is changed to Hexane of Extraction Process T-1through the experiment of LLE datas.