精馏-渗透气化集成过程的研究进展

精馏-渗透气化(PV)集成过程在共沸物、近沸物等液相混和物的分离方面有着巨大的潜力,与化工生产中的传统分离方法相比,集成过程可以节能减耗,并且可以避免夹带剂的使用.列举了一些精馏-PV集成过程的工业应用和进展,分析了该集成过程技术上和经济上的可行性.最后,提出了精馏-PV集成过程的研究开发方向,为该过程的进一步发展提供...     

悬浮催化蒸馏-化工过程强化与集成新技术

悬浮催化蒸馏是在催化蒸馏基础上发展起来的反应分离耦合集成新工艺.结合自身的研究开发工作,介绍了悬浮催化蒸馏的构思原理和技术特点,其在苯丙烯烷基化合成异丙苯、苯十二烯烷基化合成十二烷基苯、苯加氢制环己烷过程中的应用,以及对这一新工艺的过程模拟等研究开发工作.研究结果表明,悬浮催化蒸馏不仅技术可行而且与传统工艺相比具有许多独特的技术优势,是一项化工过程强化与集成的新技术.     

集散控制系统的发展趋势展望

介绍了目前在化工企业中占主导地位的集散控制系统DCS的优缺点,指出了当前DCS应用中出现的瓶颈现象,认为随着网络和通信技术、现场总线技术的发展,将导致DCS向计算机集成制造(CIMS)系统、集成过程(CIPS)系统和现场总线控制系统(FCS)2个方向发展.     

环境影响最小化的化工过程综合

将环境影响最小化集成到化工过程综合中 ,不仅对于环境保护 ,而且对于过程技术本身都是目前紧迫的任务 .从过程系统工程的观点对环境影响最小化的化工过程综合进行了全面文献调研和综述 ,在简介环境影响最小化的一般原则以及过程综合变迁的基础上重点论述了过程综合中影响最为深远的 3个方面即反应路径综合、环境影响评价和过程集成技术 ,最后得出一般性的结论 ,以期作为化工系统工程发展的方向     

化学工业"两化融合"发展与过程系统工程:挑战和前景(二)——"两化融合"发展对过程系统工程的挑战及前景

论述了化学工业"两化融合"发展,趋向精细化、服务化和可持续化,对过程系统工程(PSE)提出挑战.研究了过程系统工程应从产品工程/纳米过程系统工程、间歇过程系统工程、供应链的优化与协同、多尺度过程集成及绿色过程系统工程5个方面提供技术支撑的前景.     

基于模拟分析技术和随机搜索算法的化工过程能量集成方法研究

夹点和模拟分析技术已在化工能量集成中广泛应用.今以夹点技术为基础,对化工过程系统用能进行诊断,根据"过程用能一致性"原则提出能量集成改造方案,通过改变塔压实现塔顶冷凝器与塔底再沸器的热集成多效蒸馏.夹点技术实现的优化目标仅是热回收最大或公用工程能耗最小,不能实现包括设备整体费用最小的过程全局最优化.研究基于模拟技术,通过灵敏度分析,得到精馏塔各操作参数的样本映射数据,通过多项式拟合得到参数关联方程,并在遗传算法及模式搜索中设计过程费用函数,提出了将模拟分析技术与随机搜索算法相结合的,以过程费用函数最小化为优化目标的能量集成方法.工业实例的成功设计应用证明了其有效性和可行性.     

过程系统综合集成优化法的研究进展

综述了目前国内外过程系统综合集成优化的主要方法：直观推断法、最优化法、夹点分析法和过程系统火用经济调优法．并分析了各自的优缺点,指出利用各种方法的优点,发展数学规划、人工智能方法、夹点分析和火用经济学集成的方法、开发节源型过程耦合技术、进行过程系统综合和环境保护的协同优化研究,将是过程系统综合集成优化法研究的重要课题。     

甲苯二胺制备技术国内外进展

从二硝基甲苯(DNT)催化加氢、甲苯二胺(TDA)分离精制、过程集成与强化等方面介绍了TDA生产技术进展,评述了我国TDA技术与国外存在的差距,指出了今后我国TDA技术应大力提高单套装置的生产规模,并利用过程技术对生产流程进行能量质量集成,以达到节能减排、安全环保、连续稳定生产的目的.     

油田开发信息集成应用的实践与认识

本文以油田开发方案决策支持系统的建设实践为例,探索建设过程中逐步形成的一些建设模式,同时分析油田开发信息集成应用的现状,以及复杂业务分析过程信息化、不断集成优化的趋势。从软硬件环境资源共享支持、应用平台统一架构、按照油田主题进行数据集成、应用顶层设计并集成的多个角度研究,设计下一步油田开发信息应用发展方向,借助云计算、大数据新型技术,实现信息化建设的企业集成,使油田信息集成应用朝着一体化、可视化、精细化、并行化、标准化、规模化和普及化方向发展,推进油田由数字化向智能化转变。     

基于系统节能的冶金过程监测与模拟技术研究进展

从冶金企业能源管理系统的研究和应用现状、冶金过程的数值模拟方法与应用等方面,综述了基于系统节能的冶金过程监测与模拟技术的研究进展,分析了冶金工艺流程的过程模拟技术、冶金关键设备的计算流体力学(CFD)模拟技术及两者集成的研究现状以及数值模拟技术在冶金过程系统节能中的应用与不足之处. 结果表明,过程模拟技术可分析冶金工艺整体生产流程的参数变化,但忽略了操作单元物理特性、空间变化等因素;CFD模拟可分析单个冶金设备运行机理和优化工艺参数,但不能实现上下工序之间操作参数的关联. 采用时间序列方法集成过程模拟与CFD模拟技术可综合两者的优点,是研究冶金过程系统节能研究的重要方向.     

Enhanced BTX Production in Refineries with Sulfur Dioxide Oxidation by Thermal Integrated Model

More stringent environmental regulations as well as limitations of traditional energy sources lead to the development of innovative techniques to supply the required energy of different industries. Multifunctional autothermal reactors as a novel strategy in process integration technology have been introduced as a response to this requirement. The catalytic naphtha reforming process is one of the main processes in the refinery industries which demand several sources of energy to manage the existing reactions. Also, oxidization of sulfur dioxide to sulfur trioxide as a highly exothermic reaction is one of the typical solutions to reduce and control this greenhouse gas in various industries. According to the main aims of process integration and by considering environmental regulations, a novel thermal integration model is proposed. The results demonstrate the aromatic upgrading and high conversion of sulfur dioxide in this model.     

可持续发展时代的过程集成

介绍了可持续性和过程系统工程的发展和定义,讨论了过程集成在可持续发展时代的企业内部和企业间的发展和应用。企业内的过程集成主要介绍了其集成方法以及多方面的应用实例,并提出了深度过程集成的概念;企业间的过程集成目前主要应用在多联产系统和生态工业园区。本文对一些典型的集成方法也简要进行了综述。     

Simultaneous process optimization and heat integration based on rigorous process simulations

This paper introduces a simultaneous process optimization and heat integration approach, which can be used directly with the rigorous models in process simulators. In this approach, the overall process is optimized utilizing external derivative-free optimizers, which interact directly with the process simulation. The heat integration subproblem is formulated as an LP model and solved simultaneously during optimization of the flowsheet to update the minimum utility and heat exchanger area targets. A piecewise linear approximation for the composite curve is applied to obtain more accurate heat integration results. This paper describes the application of this simultaneous approach for three cases: a recycle process, a separation process and a power plant with carbon capture. Case study results indicate that this simultaneous approach is relatively easy to implement and achieves higher profit and lower operating cost and, in the case of the power plant example, higher net efficiency than the sequential approach.     

Integrated Modelling of Process Operation Systems Using the Agent‐Oriented Approach

For the past years, several software and computer tools have been developed to aid the chemical process operations including real‐time simulation, on‐line optimization, fault diagnosis, process monitoring, and many other functions. These tools were designed separately and did not collaborate efficiently, making it difficult to integrate different engineering tasks for the optimal process operation. In this paper, an agent‐oriented modelling approach is presented to address this problem. Elements in the process operation systems are divided into two classes. One class consists of equipment, units and processes, while the other class consists of production operation tasks. The two classes of elements are modelled as objects and agents, respectively. Then, three strategies are presented to implement the integration of the whole process operation system, which are integration of object models, integration of agent models and supervision of operator. Also presented is a case study of integration of process operation decision optimization and abnormal situation management using the proposed agent oriented approach for TE challenge problem.     

Integration of a Gas Fired Steam Power Plant with a Total Site Utility Using a New Cogeneration Targeting Procedure

A steam power plant can work as a dual purpose plant for simultaneous production of steam and elec-trical power. In this paper we seek the optimum integration of a steam power plant as a source and a site utility sys-tem as a sink of steam and power. Estimation for the cogeneration potential prior to the design of a central utility system for site utility systems is vital to the targets for site fuel demand as well as heat and power production. In this regard, a new cogeneration targeting procedure is proposed for integration of a steam power plant and a site utility consisting of a process plant. The new methodology seeks the optimal integration based on a new cogenera-tion targeting scheme. In addition, a modified site utility grand composite curve （SUGCC） diagram is proposed and compared to the original SUGCC. A gas fired steam power plant and a process site utility is considered in a case study. The applicability of the developed procedure is tested against other design methods （STAR？ and Thermoflex software） through a case study. The proposed method gives comparable results, and the targeting method is used for optimal integration of steam levels. Identifying optimal conditions of steam levels for integration is important in the design of utility systems, as the selection of steam levels in a steam power plant and site utility for integration greatly influences the potential for cogeneration and energy recovery. The integration of steam levels of the steam power plant and the site utility system in the case study demonstrates the usefulness of the method for reducing the overall energy consumption for the site.     

Process intensification: New understanding and systematic approach

This paper presents new definitions for process intensification identifying two main categories called unit intensification and plant intensification. This paper also proposes general mathematical programming formulations for the different categories of intensification through a disjunctive formulation to consider the use of existing units or to include additional units. The ideas of process integration (energy, mass and property integration) are very useful for process intensification helping in maximizing throughput for a given process, minimizing process inventory for a given throughput or in minimizing utilities and feedstock for a given throughput (this means that process intensification is broader than process integration). This paper identifies that process intensification is a wider approach than single unit intensification as it was considered by most of the previous works. A case study is presented to show the applicability of the proposed models and definitions.     

A Multi-layer Information Integration Platform for Chemical Process Operation Systems

In the process industry, automation and process control systems are widely implemented, information integration is however far away from satisfactory. It remains a hard job for senior managers to make decisions based on the plant-wide real-time integrated information. This paper proposes a multi-layer information integration platform. In the data integration level, the standard for the exchange of product (STEP) and the extensible markup language (XML) are used to unify these data of the chemical process. In the model integration level, the models are integrated by using the neutral model repository and CAPE-OPEN. In the integration of process task, the common object request broker architecture (CORBA) is used as the communication mediator. The XML is taken as the data standard. A uniform information platform is thus constructed and realized. The proposed information integration platform is satisfactorily implemented to solve the Tennessee Eastman (TE) problem.     

一个化工过程运行系统的多层信息集成平台

In the process industry, automation and process control systems are widely implemented, information integration is however far away from satisfactory. It remains a hard job for senior managers to make decisions based on the plant-wide real-time integrated information. This paper proposes a multi-layer information integration platform. In the data integration level, the standard for the exchange of product (STEP) and the extensible markup language (XML) are used to unify these data of the chemical process. In the model integration level, the models are integrated by using the neutral model repository and CAPE-OPEN. In the integration of process task, the common object request broker architecture (CORBA) is used as the communication mediator. The XML is taken as the data standard. A uniform information platform is thus constructed and realized. The proposed information integration platform is satisfactorily implemented to solve the Tennessee Eastman (TE) problem.     

一种建立系统集成模型的思路

研究了过程控制系统集成与系统功能模型之间的关系,给出由ＩＤＥＦＯ图建四维模型的基本思路和示例。