环氧氯丙烷新旧生产工艺对比

本文重点讨论了生产环氧氯丙烷的丙烯高温氟化法传统工艺和醋酸丙烯酯法新工艺，通过两种工艺的对比，论证了醋酸丙烯酯法新工艺的经济合理性。     

环氧氯丙烷生产技术及市场消费

论述了环氧氯丙烷2种生产工艺特点及其市场消费，并对环氧氯丙烷的市场前景进行展望。     

甘油法环氧氯丙烷的生产技术

介绍了环氧氯丙烷的生产工艺概况。比较了丙烯高温氯化法、醋酸丙烯酯法、甘油法的优缺点。指出在中国石油资源短缺的背景下,甘油法生产环氧氯丙烷清洁生产路线是发展方向。     

环氧氯丙烷生产技术及发展趋势

环氧氯丙烷是一种重要的化工原料和化工中间体。本文介绍了环氧氯丙烷的主要生产技术,并对环氧氯丙烷的市场进行了分析预测,指出新建环氧氯丙烷项目的主要制备工艺技术。未来环氧氯丙烷市场还是有一定的增长空间,也亟待技术的进一步优化。     

环氧氯丙烷生产、现状与市场

综述了环氧氯丙烷国内外的生产方法、生产现状及目前的市场需求状况,预计今后的年需求量约10 万t,并探讨其发展。     

在我国采用甘油法生产环氧氯丙烷的探讨

从环氧氯丙烷市场供需分析、甘油法与传统丙烯高温氯化法的比较、甘油资源量及获取渠道、甘油法在我国的工业化进程及存在的问题等方面,对我国采用甘油法进行环氧氯丙烷生产进行了探讨。     

甘油法环氧氯丙烷生产技术研究进展

比较了丙烯高温氯化法、醋酸丙烯酯法、甘油法生产环氧氯丙烷的优缺点,主要介绍国内外对甘油法生产环氧氯丙烷工艺的研究进展及技术。     

环氧氯丙烷的生产技术进展

环氧氯丙烷的生产方法有丙烯高温氯化法和醋酸丙烯酯法 2种 ,前者生产过程灵活 ,工艺成熟 ,操作稳定 ;后者反应条件温和 ,不产生盐酸副产物。环氧氯丙烷生产技术的发展动向是改进传统工艺技术和研发新技术。意大利埃尼化学公司开发的氯丙烯及其衍生物环氧化制备环氧氯丙烷新工艺以TS 1沸石为催化剂 ,反应温度为 4 5℃ ,反应时间 1h ,产物的选择性达到 99%。     

环氧氯丙烷的合成及应用

介绍了环氧氯丙烷的合成方法，重点介绍了收率高，生产能力大的醋酸丙烯酯法。综述了ＥＣＨ的多种用途。建议国内尽快增大ＥＣＨ的产量，以改善供不应求的状况。新建ＥＣＨ装置宜采用醋酸丙烯酯法。     

浅议环氧氯丙烷生产技术及其发展

分析了国内外环氧氯丙烷生产情况和生产技术进展情况,并对几种生产技术进行了对比。     

环氧氯丙烷的市场分析

本文分析了国内外环氧氯丙烷的生产和消费情况，提出了发展我国环氧氯丙皖生产的一些建议。     

Melamine/epichlorohydrin prepolymers: syntheses and characterization

The basic catalysis of melamine with epichlorohydrin gives prepolymers that can be used in the preparation of energetic materials. In this work, sodium hydroxide and triethylamine were used as catalysts and ethyleneglycol as initiator. Different reaction conditions were tested and the characterization of the products was carried out by IR and NMR spectroscopy and MS spectrometry, hydroxyl groups content, vapour pressure osmometry and elemental and thermal analysis. Epichlorohydrin reacts with the amine groups of melamine and forms lateral chains with hydroxyl and epoxide end groups, which can be used for curing purposes. The two catalysts lead to similar products, confirmed both by the structure and number of the lateral chains. The melamine/epichlorohydrin ratio was found important for the structure of the final compounds. Chlorine atoms leave the molecules during reaction due to basic catalysis. In the light of the use of the prepolymers in energetic materials, the presence of the 1,3,5-s-triazine ring and the lateral chains with end groups curable by e.g. isocyanates was accomplished with success. However, the loss of chlorine atoms limits to a certain extent their possible substitution by energetic groups.     

以丙三醇和氯化氢为原料制备环氧氯丙烷的工艺研究

介绍了以丙三醇和氯化氢为原料制备环氧氯丙烷的工艺,以己二酸为催化剂进行丙三醇的氯化反应,生成的二氯丙醇再和碱反应生成环氧氯丙烷。对影响反应的因素进行了研究,得出了最佳工艺条件：氯化反应温度120℃,氯化氢的通气量326．4mL／min,反应时间20h,催化剂物质的量为丙三醇的16％,环化反应采用1．9mol／L的氢氧化钠在30℃下进行较为合适。在此条件下得到的环氧氯丙烷收率为91．79％。     

环氧氯丙烷生产技术进展及发展建议

简述了国内环氧氯丙烷生产企业的概况,介绍了环氧氯丙烷工艺技术的改进措施和技术进展,并提出了发展建议。     

Fenton试剂氧化处理环氧氯丙烷废水的探索

环氧氯丙烷废水毒性强、生物降解性差,不适合用一般的生物方法处理,提出Fenton试剂氧化处理的方法.实验撂索了Fenton试剂反应的影响因素以及条件,发现当废水初始pH为3,H2O2的投加量是1.92 g/L,ρ(Fe2+)=1.60 g/L,即m(H2O2):m(Fe2+)=1.2,Fe2+等量分两次投加,总反应时间为1 h时,COD去除率可达89.44%.药剂分次投加比一次投加对处理效果有很大的提高.     

Cycloaddition of carbon dioxide to epichlorohydrin using ionic liquid as a catalyst

The cycloaddition of carbon dioxide to epichlorohydrin was performed without any solvent in the presence of ionic liquid as catalyst. 1-Alkyl-3-methyl imidazolium salts of different alkyl group (C₂, C₄, C₆, C₈) and anions (Cl⁻, BF₄⁻, Br⁻, PF₆⁻) were used for this reaction carried out in a batch autoclave reactor. The conversion of epichlorohydrin was affected by the structure of the imidazolium salt ionic liquid; the one with the cation of longer alkyl chain length and with more nucleophilic anion showed better reactivity. The conversion of epichlorohydrin increased as the temperature increased from 60°C to 140°C. It also increased with increasing carbon dioxide pressure probably due to the increase of the absorption of carbon dioxide into the mixture of epichlorohydrin and the ionic liquid. Zinc bromide was also tested for its use as a cocatalyst in this reaction. This work was presented at the 6 ^th Korea-China Workshop on Clean Energy Technology held at Busan, Korea, July 4–7, 2006.     

Evaluation of an improved epichlorohydrin synthesis from dichloropropanol using a microchemical system

Synthesizing epichlorohydrin (ECH) from dichloropropanol (DCP) is a complicated reaction due to the partial decomposition of ECH under harsh conditions. A microchemical system can provide a feasible platform for improving this process by conducting a separation once full conversion has been achieved. In this work, referring to a common DCP feed used in industry, the reaction performance of mixed DCP isomers with NaOH in the microchemical system on various time scales was investigated. The operating window for achieving high conver-sion and selectivity was on a time scale of seconds, while the side reactions normal y occurred on a time scale of minutes. Plenty of Cl?ions together with a high temperature were proved to be critical factors for ECH hydrolysis. A kinetic study of alkaline mediated ECH hydrolysis was performed and the requirements for an improved ECH synthesis were proposed by combining quantitative analysis using a simplified reaction model with experimen-tal results on the time scale of minutes. Compared with the conventional distillation process, this new strategy for ECH synthesis exploited microchemical system and decoupled the reaction and separation with potentials of higher productivity and better reliability in scaling up.     

我国环氧氯丙烷的发展状况与存在的问题

介绍了我国环氧氯丙烷的生产能力、产量和市场情况,分析了存在的问题.