环氧丙烷生产工艺的发展现状

概述了国内外环氧丙烷生产工艺现状,目前已工业化的生产技术包括氯醇法、共氧化法、异丙苯氧化法、过氧化氢直接氧化法;总结了各方法的特点,并简单概况了环氧丙烷生产工艺的最新研究进展。     

国内环氧丙烷的生产及消费分析

1我国环氧丙烷生产情况 环氧丙烷的主要生产方法有氯醇法和间接氧化法。氯醇法是由丙烯和氯气、水在常压和 600℃下经次氯酸化生成氯丙醇,氯丙醇经皂化、凝缩、蒸馏制得。 间接氧化法是由乙苯（或异丁烷、异丙苯等）经氧化制成氢过氧化乙苯（或叔丁基化过氧氢、氢过氧化异丙苯等）,在环烷酸钼等催化剂存在下,与丙烯进行环氧化反应而得。目前在我国环氧丙烷产品的工业化生产全部采用氯醇法生产。氯醇法生产主要分为氯醇化、皂化和精馏 3个工序完成。 环氧丙烷世界年产量已超过 200万 t,主要集中在发达工业国家。随着我国石油化学工业的发…     

过氧化氢氧化法制备环氧丙烷的技术进展

环氧丙烷(PO)是一种重要的基本有机化工原料,用途广泛。其工业生产方法主要有氯醇化法、共氧化法、异丙苯氧化法(CHP法)和过氧化氢直接氧化法(HPPO法)等,其中HPPO法因环保无污染而成为研究开发的重点。介绍了HPPO法制备环氧丙烷的工业生产现状,概述了我国HPPO法制备环氧丙烷的技术进展,提出了今后的发展建议。     

壳牌公司开发异丙苯氧化制环氧丙烷工艺

壳牌公司开发通过异丙苯氧化的催化过程制取环氧丙烷工艺 ,该技术可专门用于生产环氧丙烷 ,或者与苯酚和丙酮一起生产环氧丙烷。该工艺将比常规技术 (生成含氯副产品的氯醇法路线或联产苯乙烯单体或MTBE的Oxirane工艺 )更高效。异丙苯氧化和与丙烯的最终反应是效率较高的过程 ,采用选择性较好的催化剂 ,可提高产率 ,副产物也较少。副产物主要是醇类 ,可通过加氢方便地再转化成异丙苯供利用。现已有许多的生产商从事替代常规环氧丙烷工艺的开发 ,大多集中在丙烯直接催化氧化。住友化学公司最近在日本千叶已投产了第一套工业规模直接氧化法…     

国内外化工简讯

低成本丙烯生产环氧丙烷工艺问世西班牙雷普索公司科研人员最近开发成功了一种只使用氢气和氧气作环氧化剂的高选择性且无联产品的环氧丙烷生产工艺。其工艺过程为:首先在第一个反应器的非酸性含醇介质中产生过氧化氢,然后把过氧化氢转入第二个反应器中,在相应的催化剂环境中通入丙烯气体得到环氧丙烷和水。反应时间可控制在60分钟,H2O2转化率为96%,环氧丙烷的选择性为95%。目前工业生产环氧丙烷主要有氯醇法和共氧化法,氯醇法产生的氯气腐蚀设备并造成环境污染;共氧化法有叔丁醇(TBA)和苯乙烯(SM)两种联产工艺,由于产生大量联产品(苯乙…     

国内环氧丙烷的现状及发展

概述了国内外环氧丙烷的氯醇法、共氧化法和直接氧化法3种主要生产工艺及其特点,介绍了国内环氧丙烷产业从创建到技术引进、吸收和自主创建的发展过程及主要生产企业、产能和近期的主要市场需求,预测了国内外环氧丙烷的发展趋势。     

环氧丙烷生产工艺述评及发展设想

介绍国内环氧丙烷生产概况和氯醇法、联产法及过氧化氢直接氧化丙烯制环氧丙烷工艺,以及近期国内外环氧丙烷生产工艺研发情况。并对比3种生产工艺,提出对国内环氧丙烷改造和发展的意见。     

环氧丙烷生产技术发展动向

对国内外现有环氧丙烷生产技术以及改进的氯醇法、共氧化法和正在开发的以TS-1为催化剂的丙烯直接氧化法作了综述.     

环氧丙烷生产技术发展动向

对国内外现有环氧丙烷生产技术以及改进的氯醇法、共氧化法和正在开发的以TS-1为催化剂的丙烯直接氧化法作了综述。     

环氧丙烷工艺技术对比

概述了国内外环氧丙烷的生产技术,阐明了通过氯醇法、共氧化法(PO/SM技术、PO/TBA技术)和直接氧化法(HPPO)对环氧丙烷制备的工艺介绍、反应原理、技术特点、工艺流程等内容,并且对各个工艺技术进行了生产技术综合对比和不同技术公用工程情况、不同技术层产品情况,不同技术三废情况以及公用工程。     

聚氯乙烯副产电石泥在环氧丙烷生产中的应用

简要介绍了锦化化工 (集团 )有限责任公司聚氯乙烯副产的电石泥应用于环氧丙烷生产的工艺流程 ,并结合装置运行的实际情况 ,讨论了电石泥对环氧丙烷生产产生的各种影响 ,阐述了采用二级除砂达到理想除砂效果 ,变频调速石灰乳流量防止设备堵塞 ,沉降处理电石泥上清液用于化灰 ,可以节约大量水资源和蒸汽等一系列措施     

Methylosinus trichosporium OB3b整细胞催化丙烯制备环氧丙烷的工艺条件

甲烷氧化菌的甲烷单加氧酶（MMO）可以在常温常压下直接一步氧化丙烯生成环氧丙烷,而且除了产物外只有水产生,和目前化学工业所使用的方法相比具有条件温和、选择性高等特点。在优化了甲烷氧化菌Methylosinus. trichosporium OB3b整细胞催化丙烯生产环氧丙烷的各个参数的基础上,选用本实验室建立起来的高密度培养甲烷氧化菌的方法来培养细胞,并研究该细胞催化丙烯生成环氧丙烷的工艺特性,结果可使环氧丙烷的积累浓度达到了目前文献已报道最高浓度的约4倍。     

氯醇法环氧丙烷废液中工业1,2-二氯丙烷的气相色谱分析

介绍采用气相色谱法测定氯醇法生产环氧丙烷废液中的工业1,2-二氯丙烷。     

Identification of economic potentials in production processes: An industrial case study

Process improvement is mainly triggered by quality, safety, environmental considerations or economic potentials. First, ideas for problem solving and the related economic potential need to be analyzed before proceeding to measure, cost and risk assessment.Economic process improvement potentials and options for realization are identified using a Three Stage Method developed in BASF's Process Engineering department. The method is applied to a case study involving two products and a process improvement option.The main tool for this analysis is based on systems technology and material and energy flow analysis. Cost analysis and allocation are based on the results of material and energy flow analysis and provides a basis for developing engineering solutions. The method and the tools are applicable to a wide range of scales including global interactions of production processes and supply chains.     

硫酸法烷基化工艺的推进

讨论了烷基化油在清洁汽油中的地位和发展趋势,简介了国内外烷基化的生产情况,详细介绍了硫酸法烷基化工艺,对硫酸法烷基化技术进行了综述,认为硫酸法烷基化工艺更适合我国国情。     

应用Aspen Batch对年产25吨鲁拉西酮原料药工艺设计优化

采取专利CN 102863437 A的工艺,设计间歇工艺过程,将Aspen Batch Process Developer软件应用于盐酸鲁拉西酮原料药车间设计的全流程模拟和优化。间歇操作具有显著的优势：生产灵活,同一设备可生产不同产品,可根据市场需要调节生产能力及变更产品。适合于小批量,高收益的精细化学品。过去的四十年里,使用计算机对化工连续化生产进行模拟和设计已经十分普及。制药工业与传统化工最大的区别是生产过程多采用间歇法操作。目前世界上应用于化工间歇生产的计算机软件有BATCHES、gPROMS和Aspen Batch Process Developer。本文所用版本为Aspen Tech V8.6,以年产25t盐酸鲁拉西酮原料药车间为例,对车间进行全流程模拟及优化。整个设计贯彻质量源于设计理念,运用元葱模型,将盐酸鲁拉西酮的生产工艺分为磺化、氨解、氢化、缩合、成盐、精烘包等6个模块。     

Network Theory for Chemical Processes

The concept of a network theory proposed in this paper provides a basis for systematically addressing questions concerning the design and operation of integrated processes. The route to a problem solution is characterised by the following steps. Modular process structuring takes place on hierarchically ordered levels by coupling of couponents and linkage elements. The process module are coupled mass- and energy-wise by means of opposing potential and current vectors. The linkage which is coupled one-sidedly and is hence reaction-free is a special case. Process modelling utilises modular process structuring and assigns the structural modules to behaviour-describing modules. Process analysis examines structural properties (stability, controllability, observability, sensitivity) and nonlinear phenomena (igniton and extinction; boundary cycles, waves, chaos) of the overall process behaviour. Process design considers the layout and control of processes from holistic vantage points and aims at optimum determination of the nature, number, and coupling of all the components and linkage elements of an integrated process in the light of a given production goal.     

Netzwerktheorie verfahrenstechnischer Prozesse

The concept of a network theory proposed in this paper provides a basis for systematically addressing questions concerning the design and operation of integrated processes. The route to a problem solution is characterised by the following steps. Modular process structuring takes place on hierarchically ordered levels by switching of components and linkage elements. The process module are switched mass- and energy-wise by means of opposing potential and current vectors. The linkage which is switched one-sidedly and is hence reaction-free is a special case. Process modelling utilises modular process structuring and assigns the structural modules to behaviour-describing modules. Process analysis examiones structural properties (stability, controllability, observability, sensitivity) and nonliner phenomena (ignition and extinction; boundary cycles; waves; chaos) of the overall process behaviour. Process design considers the layout and control of processes from holistic vantage points and aims at optimum determination of the nature, number, and switching of all the components and linkage elements of an integrated process in the light of a given production goal.     

Process Parameter Analysis and process understanding — Some industrial examples

At the end of process development or during a routine production period often rises the question to prove the identity or the significance of difference of processes or batches. To answer these questions objectively, relevant process data collected by computerised production equipment with recipe control and statistical tools are essential.Attempts have been made to define some quantifiers to make process parameters comparable and to characterise processes. Three types of processes and equipments have been discussed and compared on the level of Accuracy, In-Process Precision and Repeatability of Input and Output parameters. The processes are: Coating Process 1: Driam Vario 500/600 perforated drum coater and Fluid granulation Processes 1 and 2: Glatt WSG 15 top-spray granulator (version 1 with blow-off metal filter and version 2 with one chamber textile filter and mechanical shaking).Computer programs have been developed to structure, organise and statistically evaluate process raw data collected by the above mentioned equipments. The results are presented in uniform summary tables for every batch following the recipe structure phase by phase.The programs perform further statistical evaluation of summary tables, producing control charts.These methods and tools are useful to filter out differences and unusual behaviour, to track back the original process, search the reasons and to understand the process.The introduced Process Parameter Deep Analysis give the possibility to investigate filmcoating (or fluid granulation) process through the wetting curve (average moisture content vs. time).The method helps process understanding and design of process optimisation.     

Teilen und Trennen im Recycling-Prozeß

Division and Separation in the Recycling Process. The recycling process comprises a preparation and a reutilization step. This article describes preparation processes which are of importance for the recycling of used products and production wastes. The goal is to provide a clear presentation of the individual processes of division and separation and their mode of functioning with the aid of the systematic classification discussed in the paper. This is important for the overall process of recycling since combinations of various processes are usually employed. A systematic classification thus also provides a basis for new processes and combinations of processes.