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Simulation and design of a heat-integrated double-effect reactive distillation process for propylene glycol methyl ether production 被引量:1
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作者 Ran An Shengxin Chen +5 位作者 Shun Hou Yuting Zhu Chunhu Li Xinbao Zhu Ruixia Liu Weizhong An 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第12期103-114,共12页
A double-effect reactive distillation(DERD)process was proposed for the production of propylene glycol methyl ether from propylene oxide and methanol to overcome the shortcoming of low selectivity and high-energy cons... A double-effect reactive distillation(DERD)process was proposed for the production of propylene glycol methyl ether from propylene oxide and methanol to overcome the shortcoming of low selectivity and high-energy consumption in the tubular plug-flow reactor.A single-column reactive distillation(RD)process was conducted under optimized operating conditions based on sensitivity analysis as a reference.The results demonstrated that the proposed DERD process is able to achieve more than 95%selectivity of the desired product.After that,a design approach of the DERD process with an objective of the minimum operating cost was proposed to achieve further energy savings in the RD process.The proposed DERD configuration can provide a large energy-savings by totally utilization of the overhead vapor steam in the high-pressure RD column.A comparison of the single-column RD process revealed that the proposed DERD process can reduce the operating cost and the total annual cost of 25.3%and 30.7%,respectively,even though the total capital cost of DERD process is larger than that of the RD process. 展开更多
关键词 Propylene oxide Reactive distillation Heat integration Propylene glycol monomethyl ether process simulation
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START-UP AND DYNAMIC PROCESSES SIMULATION OF A DISTILLATION COLUMN
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作者 宋海华 余国琮 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1995年第3期13-23,共11页
A new dynamic non-equilibrium mixing-pool model for simulating start-up and dynamic re-sponse of a distillation column is reported.The proposed model is established on the basis ofconsidering the two dimensional flow/... A new dynamic non-equilibrium mixing-pool model for simulating start-up and dynamic re-sponse of a distillation column is reported.The proposed model is established on the basis ofconsidering the two dimensional flow/mixing behavior of actual trays in a distillation column.Com-parison is made among the computed results of the start-up time and the dynamic response time bythe proposed and five other typical models.It is found that the computed time for both dynamicprocesses is longer by the model which considers any flow/mixing pattern than by the model withoutsuch concern.The inertia effect of flow/mixing seems to be important and can not be ignored inmodeling the transient process of distillation.The proposed model,which is believed to be suitableto large column,seems somewhat useful in predicting industrial distillation dynamics. 展开更多
关键词 distillation simulation START-UP dynamic process three dimensional NON-EQUILIBRIUM mixing-pool model
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The Modeling and Simulation of Reactive Distillation for the Esterification Process
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作者 朱建华 沈复 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第6期736-739,共4页
In this paper,a generalized model of the reactive distillation processes was developed via rate-based approach. The homotopy-continuation method was employed to solve the complicated nonlinear model equations efficien... In this paper,a generalized model of the reactive distillation processes was developed via rate-based approach. The homotopy-continuation method was employed to solve the complicated nonlinear model equations efficiently. The simulation on the reactive distillation processes was carried out with the profiles of stage temperature,composition and flow rate for both vapor and liquid phases obtained. Based on careful analysis of the simulation results, the pitfalls in experimental design were detected. Finally, a software package for the simulation of reactive distillation processes was developed. 展开更多
关键词 process simulation reactive distillation process rate-based approach homotopy-continuation method
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Simulation of Molecular Distillation Process for Lactic Acid
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作者 Andrea Komesu Johnatt Allan Rocha de Oliveira +1 位作者 Maria Regina Wolf Maciel Rubens Maciel Filho 《Journal of Chemistry and Chemical Engineering》 2016年第5期230-234,共5页
In this work, a procedure to simulate the MD (molecular distillation) process for lactic acid purification was developed. The simulation was carried out with the aid of the Aspen Plus Process Simulator. Flash vessel... In this work, a procedure to simulate the MD (molecular distillation) process for lactic acid purification was developed. The simulation was carried out with the aid of the Aspen Plus Process Simulator. Flash vessel was used to represent the MD process since the software does not present this unit operation. The simulation results with efficiency factors were in agreement with previously reported experimental data. 展开更多
关键词 simulation lactic acid molecular distillation separation process.
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STEADY-STATE OPERATION ANALYSIS OF AN IDEAL HEAT INTEGRATED DISTILLATION COLUMN 被引量:1
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作者 黄克谨 钱积新 +2 位作者 战德志 中岩勝 高松武一郎 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1997年第4期43-54,共12页
A systematic approach for the steady-state operation analysis of chemical processes is pro-posed.The method affords the possibility of taking operation resilience into consideration during thestage of process design.I... A systematic approach for the steady-state operation analysis of chemical processes is pro-posed.The method affords the possibility of taking operation resilience into consideration during thestage of process design.It may serve the designer as an efficient means for the initial screening ofalternative design schemes.An ideal heat integrated distillation column(HIDiC),without any reboileror condenser attached,is studied throughout this work.It has been found that among the various va-riables concerned with the ideal HIDiC,feed thermal condition appears to be the only factor exertingsignificant influences on the interaction between the top and the bottom control loops.Maximuminteraction is expected when the feed thermal condition approaches 0.5.Total number of stages andheat transfer rate are essential to the system ability of disturbance rejection.Therefore,more stagesand higher heat transfer rate ought to be preferred.But,too many stages and higher heat transfer ratemay increase the load of the 展开更多
关键词 distillation model IDENTIFICATION steady-state design operation RESILIENCE process control
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Process optimization of an industrial acetic acid dehydration progress via heterogeneous azeotropic distillation 被引量:3
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作者 Xiuhui Huang Zeqiu Li Ying Tian 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第8期1631-1643,共13页
The simulated process model of the HAc dehydration process under actual overloaded condition was conducted by amending the model of standard condition in our previous work using the process data collected from actual ... The simulated process model of the HAc dehydration process under actual overloaded condition was conducted by amending the model of standard condition in our previous work using the process data collected from actual production. Based on the actual process model, the operation optimization analysis of each plant(HAc dehydration column, decanter and NPA recycle column) was conducted using Residue Curve Maps(RCMs),sensitivity analysis and software optimization module. Based on the optimized parameters, the influence of feed impurity MA and the temperature of decanter on the separating effect and energy consumption of the whole process were analyzed. Then the whole process operation optimizing strategy was proposed with the objective that the total reboiler duty Q Total of C-1 and C-3 reaches the minimum value, keeping C-1 and C-3 at their optimized separation parameters obtained above, connecting all the broken recycle and connection streams, and using the temperature of D-1 as operation variable. The optimization result shows that the total reboiler duty Q Total of the whole process can reach the minimum value of 128.32 × 10~6 k J·h^(-1) when the temperature of decanter is 352.35 K, and it can save 5.94 × 10~6 k J·h^(-1), about 2.56 t·h^(-1) low-pressure saturated vapor. 展开更多
关键词 Acetic acid dehydration Azeotropic distillation process simulation Operation optimization
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Application of Energy Saving Technology in Trichlorosilane Distillation Purification Process
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作者 Qie Siyuan Pang Weiwei +1 位作者 Zhao Ming Huang Zheqing 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2019年第3期94-102,共9页
The trichlorosilane(TCS)purification process consumes a significant amount of energy to achieve the high purity requirement for TCS quality(99.9999%).This work proposed a series of energy saving technology to enhance ... The trichlorosilane(TCS)purification process consumes a significant amount of energy to achieve the high purity requirement for TCS quality(99.9999%).This work proposed a series of energy saving technology to enhance the TCS purification process,including the conventional process,the conventional process coupled with heat-pump(HP),the multi-effect distillation process,and the dividing-wall columns process.All proposed schemes have been conceptually constructed by Aspen Plus.The design and optimization of the processes have been performed by the sensitivity analysis and the response surface methodology.Moreover,the energy consumption and total annual cost(TAC)for these schemes were discussed.The simulation results show that the TAC of the conventional process coupled with the integrated heat pump can reduce 50.5%of energy consumption as compared with the conventional process;the double-effect and three-effect processes can save 15.6%and 33.8%of energy consumption,respectively;the dividing wall column process and that coupled with the heat pump process can reduce by 22.3%and 48.1%of energy consumption,respectively.It can be found that the operating cost can be saved by using the heat pump technology,while the capital cost increases due to the investment in the compressor,when the processes coupled with the heat pump are used.These results demonstrate that the conventional process coupled with the HP technology has advantages over other distillation schemes for TCS purification in terms of the energy saving and economic effects. 展开更多
关键词 TRICHLOROSILANE distillation PURIFICATION ENERGY SAVING technology process simulation
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Design, Optimization and Control of Extractive Distillation for Separation of Ethyl Acetate-Ethanol-Water Mixture Using Ionic Liquids 被引量:5
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作者 Ma Shoutao Shang Xianyong +3 位作者 Li Lumin Xue Changyong Li Jie Sun Lanyi 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2019年第1期123-132,共10页
In this work, the process simulation of pressure-swing distillation(PSD) and extractive distillation(ED) using ionic liquid(IL) 1-butyl-3-methylimidazolium acetate([bmim][OAc]) as the entrainer for separation of ethyl... In this work, the process simulation of pressure-swing distillation(PSD) and extractive distillation(ED) using ionic liquid(IL) 1-butyl-3-methylimidazolium acetate([bmim][OAc]) as the entrainer for separation of ethyl acetateethanol-water mixture is performed. The design parameters of the two distillation processes are optimized with the minimum total annual cost(TAC) serving as the objective function. The results show that the TAC saving of ED process is 35.27% in comparison with that of PSD process in the case of achieving the same purity and yield of ethyl acetate.In addition, the dynamic controllability of ED process is further studied. The traditional two-point temperature control structure is proposed for the ED process, and it works pretty well while taking into account the disturbances in both feed rate and feed composition. 展开更多
关键词 IONIC liquids extractive distillation simulation process control
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MPC of distillation column with side reactors for methyl acetate 被引量:2
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作者 Cuimei Bo Jun Li +3 位作者 Lei Yang Hui Yi Jihai Tang Xu Qiao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第12期1798-1804,共7页
This paper focuses on the dynamic control of distillation column with side reactors(SRC) for methyl acetate production. To obtain the optimum integrated structure and steady state simulation, the systematic design app... This paper focuses on the dynamic control of distillation column with side reactors(SRC) for methyl acetate production. To obtain the optimum integrated structure and steady state simulation, the systematic design approach based on the concept of independent reaction amount is applied to the process of SRC for methyl acetate production. In addition to the basic control loops, multi-variable model predictive control modular with methyl acetate concentration and temperature of sensitive plate is designed. Then, based on process simulation software Aspen Plus, dynamic simulation of SRC for methyl acetate production is used to verify the effectiveness of the control scheme. 展开更多
关键词 distillation column with side reactors (SRC) Multi-variable model predictive control (MPC) Methyl acetate steady-state optimization Dynamic simulation
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Control of Ideal Heat Integrated Distillation Columns
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作者 黄克谨 战德志 +2 位作者 中岩勝 中根尧 高松武一郎 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1999年第4期283-294,共12页
The operation of an ideal heat integrated distillation column (HIDiC) is addressed. Five kinds of control configurations, i.e. single-loop control, multi-loop control, multivariable internal model control (IMC), modif... The operation of an ideal heat integrated distillation column (HIDiC) is addressed. Five kinds of control configurations, i.e. single-loop control, multi-loop control, multivariable internal model control (IMC), modified multivariable internal model control (MIMC) and nonlinear process model-based control (NPMC), are designed and applied to the process. Simulation results demonstrate that all of the above control configurations are valid for product quality control. NPMC control configuration is found to be the best one among all the alternatives. It can readily realize setpoint transitions and conduct effectively against external disturbances. MIMC control configuration ranks second in the row for its regulatory responses to feed composition disturbances with relatively extended setting time. Next comes from the multi-loop control configuration, which is more or less handicapped by its greater deviations and overshootings. IMC control configuration can not compete with the multi-loop control configuration because it is extremely sensitive to operating condition changes. Single-loop control configuration is the worst one among all the mentioned control configurations. Its responses for the uncontrolled end products are extremely sluggish. 展开更多
关键词 distillation gain directionality process non-linearity control configuration process op-eration closed-loop simulation
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Modeling and Analysis of Internal Heat Integrated Distillation Columns
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作者 黄克谨 战德志 +2 位作者 中岩勝 中根尧 高松武一郎 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1999年第1期67-76,共10页
A generalized steady-state model is being developed for an internal heat integrated distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is devised for solving the model equations. Separat... A generalized steady-state model is being developed for an internal heat integrated distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is devised for solving the model equations. Separation of an ethanol-water binary mixture is simulated and analyzed with the model. Two pinch points are found within the process, making the separation extremely difficult and expensive. Two sharp fronts in the temperature and the composition profiles are being observed. With the introduction of heat integration, satisfactory separation may be obtained in a limited number of stages with lower reflux ratios. Increasing the pressure difference between the rectifying and the stripping sections, however, would bring about a reduced relative volatility between the two components involved, creating adverse separation performances. It is obvious that optimization of the IHIDiC is of prime importance. 展开更多
关键词 distillation heat integration energy conservation pinch point process modeling static simulation
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基于CAPE-OPEN标准的简捷炼油过程建模及常减压蒸馏流程在线模拟
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作者 焦云强 陈玉石 王建平 《石油炼制与化工》 CAS CSCD 北大核心 2024年第8期164-177,共14页
简捷炼油过程模型广泛应用于运行监测、在线计算、实时优化等领域,但大多数模型只是将输入、输出变量进行关联,无法计算出各组分流量组成,难以集成在模拟软件中进行全流程模拟。本研究简化了炼油分离过程,开发了基于CAPE-OPEN标准的简... 简捷炼油过程模型广泛应用于运行监测、在线计算、实时优化等领域,但大多数模型只是将输入、输出变量进行关联,无法计算出各组分流量组成,难以集成在模拟软件中进行全流程模拟。本研究简化了炼油分离过程,开发了基于CAPE-OPEN标准的简捷炼油塔模型。首先,将炼油过程简化为连续的分离单元,根据实际产品数据校正模型参数,实现某一实际工况流程模拟;其次,将模型参数与实际工况操作变量数据相结合,采用径向基函数插值确定操作变量对模型参数的影响关系,实现多种工况流程模拟;最后,通过常减压蒸馏工业装置实例的3种工况进行验证。结果表明:各工况模拟结果与Aspen计算结果相比,初馏塔塔顶油馏出温度点偏差大多在2%以内,常减压蒸馏塔各侧线油的馏出温度点平均偏差在3%以内;与实际结果相比,平均误差都在5%以内,符合工程允许误差范围要求。所建模型的计算速度快,各塔均在0.2 s左右完成计算,适用于在线生产、调度等。 展开更多
关键词 简捷炼油模型 过程建模 CAPE-OPEN 在线模拟计算 常减压蒸馏装置
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^(211)At干馏装置研制及分离工艺研究
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作者 覃贻琳 刘葳豪 +5 位作者 叶天真 杨远友 李飞泽 兰图 廖家莉 刘宁 《原子能科学技术》 EI CAS CSCD 北大核心 2024年第4期742-750,共9页
^(211)At是一种α核素,其半衰期为7.2 h,不仅适用于α靶向内放射治疗,也可替代长半衰期核素用于α辐解的研究。为解决现有^(211)At干馏工艺产额低、稳定性差的问题,本研究优化设计了^(211)At干馏生产工艺,集成了一套半自动化^(211)At干... ^(211)At是一种α核素,其半衰期为7.2 h,不仅适用于α靶向内放射治疗,也可替代长半衰期核素用于α辐解的研究。为解决现有^(211)At干馏工艺产额低、稳定性差的问题,本研究优化设计了^(211)At干馏生产工艺,集成了一套半自动化^(211)At干馏分离装置。采用碘干馏模拟实验确定了影响干馏分离的主要影响因素,改进得到了简便可行的^(211)At干馏分离工艺步骤。^(211)At干馏分离结果表明:当加速器α束流强度为20μA、能量为28.5 MeV时,轰击Bi靶4 h后,^(211)At的3次平均产额为17.87 mCi(6.61×10^(8) Bq),产品核纯度>99.9%,无Bi、Cu等杂质。^(211)At收率达98%以上,分离耗时45~60 min。本研究不仅为各类^(211)At应用工作的开展垫定了良好的基础,也可为后续^(211)At干馏自动化装置的研制提供参考。 展开更多
关键词 ^(211)At 干馏分离 工艺 碘模拟工艺 干馏装置
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多周期常减压蒸馏装置换热网络用能变化与柔性优化
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作者 刘泽坤 刘绍东 +1 位作者 赵卫东 王彧斐 《石油炼制与化工》 CAS CSCD 北大核心 2024年第6期130-136,共7页
常减压蒸馏装置能耗在整个炼油厂中最高,优化其换热网络是节能的有效手段。考虑到所加工油品会发生变化,以往针对特定原油设计的换热网络在处理其他原油时表现不再最优。提出一种多周期柔性优化方法:首先对不同原油周期进行流程模拟,随... 常减压蒸馏装置能耗在整个炼油厂中最高,优化其换热网络是节能的有效手段。考虑到所加工油品会发生变化,以往针对特定原油设计的换热网络在处理其他原油时表现不再最优。提出一种多周期柔性优化方法:首先对不同原油周期进行流程模拟,随后模拟现行换热网络,辨识夹点位置偏移,发现不合理用能发生位置,通过改变管路结构并调节换热匹配,提高换热网络柔性,消除部分共有的跨夹点传热。在某炼油厂的应用结果表明,多周期柔性设计可在周期1、周期2、周期3、周期4分别节约1421,880,3842,3421 kW的加热炉热负荷和等量的冷却负荷。对多周期换热网络用能变化规律的深入研究和柔性设计,可为炼油厂节能降耗做出更大贡献。 展开更多
关键词 常减压蒸馏 流程模拟 换热网络 夹点技术 多周期 柔性 优化
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基于程序驱动的常减压蒸馏-加氢裂化全流程模拟与分析
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作者 杨阳 张桥 《石油与天然气化工》 CAS CSCD 北大核心 2024年第4期1-7,共7页
目的石油作为传统的化石能源,其组成较为复杂,导致很难对炼油过程进行精确控制。在智能制造的要求下,建立合理可靠的炼油过程模型,并对炼油过程中来自上下游的影响进行准确的预测,有助于实现炼油过程的智能调控及优化。方法基于Aspen HY... 目的石油作为传统的化石能源,其组成较为复杂,导致很难对炼油过程进行精确控制。在智能制造的要求下,建立合理可靠的炼油过程模型,并对炼油过程中来自上下游的影响进行准确的预测,有助于实现炼油过程的智能调控及优化。方法基于Aspen HYSYS软件,依托集成了集总动力学模型的反应器模块,建立从原油到产品的常减压蒸馏-加氢裂化严格模拟流程,并在模拟的基础上探究含氢气体与油品的体积比对反应产物的流量及氢气用量的影响。在此基础上,利用Matlab驱动流程模拟的方式,在上游原油配比波动的情况下,获得下游加氢裂化装置产品产量的变化情况。结果模拟结果准确度很高,平均相对误差为0.41%。当国内原油占比从20%提升至50%时,柴油产品产量降低了13.9%,石脑油产品产量提升了6.1%,总产量降低了8.7%。结论基于程序驱动Aspen HYSYS软件建立的常减压-加氢裂化模型包括了从炼厂原油到产品的完整流程,并能对炼油过程进行分析与调优。该模型有助于智能炼化的实现及传统炼化企业向智能化、数字化方向转型。 展开更多
关键词 炼油 常减压蒸馏 加氢裂化 流程模拟 HYSYS
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新工科背景下化工流程模拟课程建设及其在化工原理实验中的应用
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作者 李昀衡 陈晓陆 +8 位作者 王智 林永琪 魏艳语 白籍中 周润腾 田雨 任虹姣 梁瑶 邓书平 《广东化工》 CAS 2024年第9期165-167,共3页
化工流程模拟课程建设过程中始终以构筑“知”“实”联动、践行赛教融合、融入课程思政为目标,使课程的开设能够与其他专业课程之间形成联动,巩固学生所学化工专业知识、提升解决实际工程问题的能力和提高学生的就业竞争力。通过化工原... 化工流程模拟课程建设过程中始终以构筑“知”“实”联动、践行赛教融合、融入课程思政为目标,使课程的开设能够与其他专业课程之间形成联动,巩固学生所学化工专业知识、提升解决实际工程问题的能力和提高学生的就业竞争力。通过化工原理实验中“精馏塔全塔效率测定”实验为例,介绍化工流程模拟课程与化工原理实验课程教学实施过程的联动。 展开更多
关键词 新工科 化工流程模拟 教学改革 化工原理实验 精馏
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LNG冷能耦合制备高纯二氧化碳工艺研究
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作者 安东雨 梁海瑞 +2 位作者 陈锐莹 李安琪 卢昕悦 《现代化工》 CAS CSCD 北大核心 2024年第6期216-220,226,共6页
以低温甲醇洗装置尾气为原料,利用LNG冷能在低温、低压条件下精馏制备高纯二氧化碳。分析低温、低压下二氧化碳中杂质分离的可行性以及LNG冷能在二氧化碳提纯中的利用方式,实现了LNG冷能耦合高纯二氧化碳的制备。低温、低压精馏法制备... 以低温甲醇洗装置尾气为原料,利用LNG冷能在低温、低压条件下精馏制备高纯二氧化碳。分析低温、低压下二氧化碳中杂质分离的可行性以及LNG冷能在二氧化碳提纯中的利用方式,实现了LNG冷能耦合高纯二氧化碳的制备。低温、低压精馏法制备高纯二氧化碳工艺电力消耗仅为传统中压精馏法的30.7%。 展开更多
关键词 高纯二氧化碳 LNG冷能利用 低温精馏 分离提纯 工艺模拟
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真空蒸馏制备高纯金属的研究进展
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作者 许志鹏 贾莉犁 +2 位作者 何志强 郭学益 田庆华 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第5期1634-1654,共21页
随着科学技术的发展,高新技术产业对金属的纯度要求越来越高。然而,痕量杂质的存在会对金属的性能产生不良影响。真空蒸馏工艺因其金属回收率高、环保性能好、设备简单等优点,被广泛应用于制备高纯金属。本文作者围绕真空蒸馏的原理和工... 随着科学技术的发展,高新技术产业对金属的纯度要求越来越高。然而,痕量杂质的存在会对金属的性能产生不良影响。真空蒸馏工艺因其金属回收率高、环保性能好、设备简单等优点,被广泛应用于制备高纯金属。本文作者围绕真空蒸馏的原理和工艺,系统地总结了高纯金属制备的总体进展。介绍了真空蒸馏的原理、真空蒸馏炉的改进设计、参数优化和仿真模拟。根据该技术制备高纯金属的现状,指出在科学研究中机理研究和仿真模拟是必不可少的。本研究对提高生产效率、节约生产成本及提高金属纯度具有一定的借鉴意义。 展开更多
关键词 真空蒸馏 高纯金属 理论计算 工艺研究 模拟
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“背包式”反应精馏生产甲基丙烯酸甲酯集成工艺
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作者 孙玉玉 汤吉海 +4 位作者 蔡鑫磊 黄益平 黄晶晶 刘丹阳 乔旭 《高校化学工程学报》 EI CAS CSCD 北大核心 2024年第4期616-624,共9页
针对酯化反应体系存在最劣沸点序列,导致反应精馏效率低下的问题,设计了过量进料的反应与精馏耦合(SRC)工艺。以酯化反应合成甲基丙烯酸甲酯(MMA)为研究对象,建立了甲醇过量进料(CS1-SRC)和甲基丙烯酸过量进料(CS2-SRC)的2种SRC工艺,考... 针对酯化反应体系存在最劣沸点序列,导致反应精馏效率低下的问题,设计了过量进料的反应与精馏耦合(SRC)工艺。以酯化反应合成甲基丙烯酸甲酯(MMA)为研究对象,建立了甲醇过量进料(CS1-SRC)和甲基丙烯酸过量进料(CS2-SRC)的2种SRC工艺,考察了原料过量比、侧反应器台数NR及CS2-SRC中萃取水进料量对生产过程能耗的影响。结果表明,在基准反应物处理量为1.28×10^(5) mol×h^(-1),总转化率≥99.5%,w_(MMA)≥99.5%的设计指标下,CS2-SRC工艺具有显著优势,此时,甲基丙烯酸过量比n_(MAA):n_(MeOH)为1.2,N_(R)为2,侧反应器中甲基丙烯酸分配比为0.75:0.25,萃取水进料量为甲醇进料的2.42倍,全流程塔釜加热负荷3027 kW,较CS1-SRC工艺能耗降低39.67%。 展开更多
关键词 甲基丙烯酸甲酯 反应与精馏耦合 优化设计 过量进料 模拟
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Aspen Plus在精馏塔操作培训中的应用
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作者 杨纪 《广州化工》 CAS 2024年第20期135-137,共3页
精馏是化工装置中十分重要的单元操作,影响精馏分离效果的因素很多,这使得精馏操作更加复杂和灵活,增加了精馏塔操作调整和培训难度。文章以芳烃联合装置邻二甲苯塔为例,将Aspen plus模拟软件应用到操作培训过程中,探讨了在压力、回流... 精馏是化工装置中十分重要的单元操作,影响精馏分离效果的因素很多,这使得精馏操作更加复杂和灵活,增加了精馏塔操作调整和培训难度。文章以芳烃联合装置邻二甲苯塔为例,将Aspen plus模拟软件应用到操作培训过程中,探讨了在压力、回流量及进料组成变化时精馏塔的参数变化趋势和调整策略,提出了确定精馏塔灵敏板的方法;流程模拟不但加深了精馏原理的理解,提高了操作培训的效果,同时增强了技术人员分析问题和解决问题的能力。 展开更多
关键词 Aspen Plus 精馏 流程模拟 操作培训
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