三氯异氰尿酸生产过程中氯气尾气处理新工艺

不断优化三氯异氰尿酸生产过程中氯气尾气处理的新工艺,能够有效降低尾气对环境的污染程度,对促进企业经济的可持续发展,具有重要作用。在对三氯异氰尿酸生产背景和研究进展进行综合阐述的基础上,分析了三氯异氰尿酸生产现状及其改进措施,重点探讨了三氯异氰尿酸生产过程中氯气尾气处理新工艺的原理及其应用,并结合案例验证了该工艺的合理性,以期为相关人士提供借鉴和参考。     

管道化制备三氯异氰尿酸工艺研究

针对三氯异氰尿酸生产工艺的不足之处,提出了改用管道化反应技术,开发了管道反应器连续式生产三氯异氰尿酸的工艺,进而提高了产品质量,减少了三废,提高了生产的安全性。     

三氯异氰尿酸连续法生产新工艺

介绍了连续法生产三氯异氰尿酸新工艺，该工艺和传统工艺相比，具有生产安全、高效、节能的特点。     

三氯异氰尿酸生产工艺废水处理回收研究

对三氯异氰尿酸生产过程中产生的氯化钠-氰尿酸废水进行处理和回收,解决了三氯异氰尿酸生产中的废水问题,减少了废水排放。该处理回收工艺由两部分组成：(1)大孔树脂吸附氰尿酸分子;(2)二氧化钛—臭氧光催化氧化降解氰尿酸。     

连续氯化法生产三氯异氰尿酸过程中危险有害因素分析及防范

分析了三氯异氰尿酸生产过程中存在的危险性，介绍了生产中涉及的危险化学品特性，阐述了工艺过程中的灼烫、中毒、燃爆及储运危险特性和应对措施；以及危险化工工艺的控制要点，建议企业应将三氨异氰尿酸纳入重大危险源的管理。     

三氯异氰尿酸的生产及市场前景

论述了国内外三氯异氰尿酸的生产及应用情况,并对我国三氯异氰尿酸产品的市场前景进行了预测,就国内三氯异氰尿酸的发展提出了建议。     

几种值得开发的耗碱化工产品

介绍了钠法漂粉精、氰化钠、金属钠、三氯异氰尿酸及三氯异氰尿酸钠、硼砂等的生产 方法,产品用途,消耗定额及市场前景。     

三氯异氰尿酸生产新工艺的研究

针对合成三氯异氰尿酸(TCCA)几种主要方法的优缺点,对三氯异氰尿酸生产工艺进行了改进,使该工艺具有生产成本低,产率高,后处理简单的特点;对影响三氯异氰尿酸合成的几个影响因素——反应时间、反应温度、溶液pH和碱用量做了研究与讨论,通过正交实验得最佳工艺条件:n(氰尿酸)∶n(碱)=1∶3.30;反应温度10℃,反应时间1.5h,pH值在3～4之间,该条件下产率达80%以上。     

3kt/a三氯异氰尿酸生产

概述三氯异氰尿酸的市场需求，对３ ｋｔ／ａ 三氯异氰尿酸生产规模进行了技术经济分析。     

微分环流新工艺生产三氯异氰尿酸的优势

微分环流技术生产三氯异氰尿酸，工艺集成度较高。环形反应器既是反应器又是结晶器，既有很高的转化率又保证了产品结晶颗粒大而均匀，氯化反应过程也更安全。     

三氯异氰脲酸的生产及应用

三氯异氰脲酸目前主要用于游泳池水的消毒杀菌。生产方法有钠盐法、钙盐法、次氯酸钠法及常温均相截流法。美国是三氯异氰脲酸的主要生产国家,约占世界总生产能力的50％。全球总生产能力约为25万t/a。我国三氯异氰脲酸的生产能力估计在2万t/a左右,其主要原料氰尿酸的产量约为2.5万t/a。国产三氯异氰脲酸由于未加工成型,与国外产品相比,价格上处于劣势。     

三氯异氰尿酸安全生产的研究

研究了三氯异氰尿酸（ＴＣＣＡ）工艺中氰尿酸纯度、碱用量、成盐时间、氯化温度、ｐＨ值、氯化浆液放置对产生三氯化氮的影响，研究了气相中三氯化氮浓度与爆炸的关系，确定了安全限量值，提出了相应的安全措施。     

Trichloroisocyanuric acid (TCCA) as a mild and efficient catalyst for the trimethylsilylation of alcohols and phenols with hexamethyldisilazane (HMDS) under heterogonous conditions

A novel and efficient method for the trimethylsilylation of various alcohols and phenols with hexamethyldisilazane (HMDS) catalyzed by trichloroisocyanuric acid (TCCA) in good to excellent yields in dichloromethane at room temperature was described.     

三氯异氰尿酸对有机磷缓蚀阻垢剂性能的影响

试验研究了三氯异氰尿酸(TCCA)对羟基亚乙基二膦酸(HEDP)、2-膦酰基丁烷-1,2,4-三羧酸(PBTCA)、羟基膦乙酸(HPAA)和多氨基多醚基亚甲基膦酸(PAPEMP)四种有机磷缓蚀阻垢剂的分解作用和对它们缓蚀、阻垢性能的影响.结果表明,三氯异氰尿酸对有机磷类缓蚀阻垢剂有分解作用,其分解程度为PAPEMP＞HPAA＞HEDP＞PBTCA;三氯异氰尿酸可使水的pH降低,造成碳钢迅速腐蚀;随着水中三氯异氰尿酸浓度的增加,HEDP、PBTCA和HPAA的阻CaCO3垢率先增加而后降低,PAPEMP的阻CaCO3垢率则持续降低.     

Direct synthesis of sulfonyl azides from sulfonic acids

A one-pot process for the synthesis of various sulfonyl azides (RSO₂N₃) by treating sulfonic acids with triphenylphosphine/trichloroisocyanuric acid/sodium azide at room temperature is described. A wide range of arenesulfonyl and alkanesulfonyl azides was obtained in excellent yields under mild conditions.     

三氯异氰尿酸参与的水-甲醇可重复利用体系中的氯代反应

以水为主要反应介质,以甲醇为助溶剂,以低毒的三氯异氰尿酸(TCCA)为氯代试剂,以对甲苯磺酸为催化剂,发展了在室温下的氯代反应,对于部分苯乙酮类化合物和含有强供电子基的芳香族化合物取得了良好的反应效果,氯代产物产率为82.0%～95.2%。水-醇的反应体系可以重复利用5次,氯代产物产率没有明显降低。该反应体系低毒、温和、廉价、可重复利用,比较接近绿色化学的要求。     

Halogenation of styrene-butadiene rubber to improve its adhesion to polyurethanes

Halogenation of styrene-butadiene rubbers has been carried out using solutions containing different amounts (0.1-5 wt%) of trichloroisocyanuric acid in butan-2-one. The treated rubber surface showed increased peel strength in joints made with polyurethane adhesive. The effects of chlorination on the rubber surface were studied using scanning electron microscopy, contact angle measurements, and infrared spectroscopy. It was shown that cracks appear in the rubber surface after halogenation, a factor which favours adhesion; the larger the amount of trichloroisocyanuric acid used, the larger the number of cracks. On the other hand, chlorination of the carbon double bond (butadiene) and the formation of carboxylic acid groups seem to be the most important chemical changes in the chlorinated rubber surfaces. Chlorination increases the surface energy of the rubber, although this increase is a function of the rubber composition. In fact, for a simple rubber formulation, the polar component of the surface energy increases for the highest concentrations of chlorine on the rubber surface; but for rubber with a more complicated formulation, the same value of surface energy after chlorination was obtained, independently of the amount of trichloroisocyanuric acid added. A good correlation was found between the contact angle measurements, the infrared spectra, and the peel strength values.     

差压热耦合反应精馏塔的模拟研究

为了降低反应精馏塔能耗,将差压热耦合技术与反应精馏技术结合,提出了一种新型的差压热耦合反应精馏的流程,并将其应用于乙酸正丁酯的合成中。应用Aspen Plus模拟软件对新工艺流程以及常规反应精馏流程进行了模拟,通过考察压缩比、进料位置、进料醇酸摩尔比等因素对差压热耦合反应精馏合成乙酸正丁酯工艺的影响,得到最优条件。同时,将该工艺与常规反应精馏工艺进行比较,结果显示,新工艺能够大幅度降低能耗,与常规反应精馏装置相比可节能40%左右。     

Characterization of EPDM Vulcanizates Modified with Gamma Irradiation and Trichloroisocyanuric Acid and Their Adhesion Behavior with Natural Rubber

The adhesion strength between surface-modified vulcanized ethylene propylene diene methylene (EPDM) rubber and unmodified natural rubber (NR) was investigated by a 180° peel test. Surface modification of EPDM vulcanizate was carried out by two different techniques: (a) irradiation of the surface by gamma radiation in the presence and absence of trimethylol propane triacrylate (TMPTA) as a sensitizer and (b) chemical treatment of the surface with trichloroisocyanuric acid (TCICA). The modified EPDM surface was thoroughly characterized by attenuated total reflection infrared spectroscopy (ATR-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray sulfur mapping (EDX), surface energy measurements, and free sulfur and gel content analysis. The joint between the modified vulcanized EPDM and the unmodified unvulcanized NR was prepared by a co-curing method. The adhesion strength between these two surfaces was found to depend on the nature of oxidation, roughness of the joining surfaces, and extent of blooming of sulfur on the modified surface. Surface modification of EPDM sample with 1 kGy of gamma irradiation in the presence of 10 wt% TMPTA resulted in a good increase in the adhesion strength between EPDM and NR (～76% improvement over the untreated sample). On the other hand, for the trichloroisocyanuric acid modified sample, maximum improvement of adhesion strength was observed at 0.5 wt% of TCICA (～29% improvement in comparison with the untreated sample).