基于ASPEN PLUS的磷酸二铵装置尾气洗涤及余热回收研究

利用脱盐水间接冷凝尾气中的水蒸气以减少白雾的排放和回收尾气的低温位余热,同时使用ASPEN PLUS软件对尾气洗涤塔及余热回收过程进行模拟。结果表明,该软件模拟结果与现场测量参数较为吻合,可用于指导生产,并为装置改造提供依据。     

利用ASPEN PLUS优选丁二烯抽提装置第二汽提及溶剂精制系统物性方法

运用流程模拟软件ASPEN PLUS,模拟了丁二烯抽提装置第二汽提及溶剂精制系统,介绍了建立模型过程中的模块选取和工艺参数等的输入。采用WILSON、NRTL和UNIFAC三种热力学模型对DMF-C4、DMF-二聚物-C4物系进行模拟计算,并将计算的结果与原设计值进行对比,从对比结果来看,选择NRTL物性方法进行模拟计算的结果与原设计更为接近。     

环氧乙烷精制塔的模拟与分析

利用ASPENPLUS化工流程模拟软件中的RADFRAC模型对环氧乙烷精制塔进行了模拟计算。通过比较,选用NRTL-RK方程来计算液相活度系数,所得模拟结果与实际生产值基本吻合,获得了和设计值一致的数据。通过对精制塔的回流量、进料位置和侧线采出位置等参数对环氧乙烷精制塔影响的深入研究,提出了最优的操作方案,获得了对高纯度环氧乙烷具有指导意义的相关工艺数据,达到了增效降耗的目的。     

Comparative simulation of a fluidised bed reformer using industrial process simulators

A simulation model is developed by commercial simulators in order to predict the performance of a fluidised bed reformer. As many physical and chemical phenomena take place in the reformer, two sub-models (hydrodynamic and reaction sub-models) are needed. The hydrodynamic sub-model is based on the dynamic two-phase model and the reaction sub-model is derived from the literature. In the overall model, the bed is divided into several sections. In each section, the flow of the gas is considered as plug flow through the bubble phase and perfectly mixed through the emulsion phase. Experimental data from the literature were used to validate the model. Close agreement was found between the model of both ASPEN Plus (ASPEN PLUS 2004 ©) and HYSYS (ASPEN HYSYS 2004 ©) and the experimental data using various sectioning of the reactor ranged from one to four. The experimental conversion lies between one and four sections as expected. The model proposed in this work can be used as a framework in developing the complicated models for non-ideal reactors inside of the process simulators.     

Utilizing waste heat of the flue gas for post-combustion CO2 capture—A comparative study for different process layouts

The inlet flue gas entering the absorber column must be ~40°C and hence needs cooling. In this article, it is proposed that waste heat be recovered from the flue gas using a condensing heat exchanger. This recovered heat is utilized as partial supplement to subsequent heating in stripper during CO₂ capture. System layouts—one for base case and two others—have been conceptualized. ASPEN Plus^® simulation results for the other two layouts are discussed for energy savings with respect to the base case. Results show that, for the other two layouts, reboiler heat duty decreases though carbon capture efficiency also decreases.     

LPG船用BOG再液化装置工艺流程模拟与优化

运用工艺流程模拟软件ASPEN PLUS对LPG船用蒸发气体(BOG)再液化装置工艺流程进行较深入模拟计算.对计算结果进行分析得知,再液化流程中的参数:BOG压缩机的入口压力、出口压力、海水冷凝器的冷凝温度、分流器的分流比例对再液化装置的能耗有不同程度的影响.结合模拟计算和分析结果,对LPG的BOG再液化装置工艺流程提出对其进行优化分析的基本方法,以最经济为目标对重要设计参数进行优化分析,确定再液化装置运行的最经济状态,最终得出最优化的设计参数作为装置设备设计的依据.     

A Novel Routine for Manufacture of Environmentally Friendly Ethanol Fuel via Reactive Distillation

A novel routine for removing water from ethanol by the hydration using C4 olefin cut catalyzed with the ion exchange resin was proposed. Reactive distillation experiments were carried out to demonstrate the feasibility of this routine. The sensitivity analysis was performed by using the software of ASPEN PLUS 10.2. The optimized operating conditions were obtained considering three objective functions which were the water content of the bottom product, water conversion rate and hydration selectivity. Under the optimized operation conditions, the final product was consisted of 45.0% of ethanol, 19.4% of ethyl tert-butyl ether, 35.1% of tert-butyl alcohol and 0.6% of water in volumetric percentage.     

基于ASPEN PLUS模拟的污泥自热干燥焚烧发电工艺

基于ASPEN PLUS模拟平台,对机械脱水后含水率为70％的污泥经热干燥后再进入循环流化床焚烧的模拟计算,与其他焚烧过程计算方法相比,可以快速实现污泥焚烧过程的模拟,并可方便对焚烧工艺及物流参数进行优化调整.结果显示:完全可用污泥焚烧后的烟气对污泥进行干燥;用污泥焚烧后的烟气(300～400 ℃)对污泥进行干燥,可将...     

碳酸乙烯酯萃取精馏分离DMC-CH_3OH恒沸物模拟

采用碳酸乙烯酯作萃取剂萃取精馏分离碳酸二甲酯(DMC)与甲醇的恒沸物,为了得到纯度达99.5%的DMC产品,利用ASPEN PLUS流程模拟软件对此过程进行了模拟计算,得到了最佳的工艺操作条件及工艺参数,DMC的纯度达到99.67%,萃取剂可以完全循环利用,为工业化装置提供了重要的理论依据和设计参考。     

Aspen plus软件及其在燃煤发电工程中的应用

介绍了ASPEN PLUS软件的基本流程模拟和功能。结合该软件在我国燃煤发电工程中的应用．指出了该软件的应用方向，为燃煤发电工程的研究和技术的应用提供参考。