农药中间体3,5,6-三氯吡啶-2-醇钠研究进展

在调研国内外农药中间体3,5,6-三氯吡啶-2-醇钠研究文献的基础上,综述了三氯吡啶醇钠的合成方法,重点介绍了三氯乙酰氯路线,并比较了各种路线的利弊。提出三氯乙酰氯路线和吡啶路线是目前较适合我国国情的两种方法。     

高纯乙酰氯生产工艺的改进

通过对国内乙酰氯现有生产工艺的考察、研究,对传统的醋酸和三氯化磷合成法进行了工艺改进,改进后工艺的产品收率比原来提高近6%,达到96.3%以上,产品质量达到99.0%以上,反应条件更加温和,操作容易控制,基本无三废产生,生产成本明显降低。     

对我国有机硅发展的一些想法

就国内外有机硅行业的现状以及发展提出了一些看法和建议。     

中和缓蚀剂Gibchem5911G的工业应用

叙述了中和缓蚀剂Gibchem5911G的缓蚀机理，以及缓蚀剂在中国石油大庆石化公司化工一厂裂解老区装置裂解气压缩机EC-301段间后冷器中的使用效果。通过对缓蚀剂注入前后EC-301段间后冷器中工艺凝液的pH值与总铁含量进行对比分析，可以看出该缓蚀剂可以改善压缩机段间后冷器中工艺凝液的pH值，能够有效地抑制后冷器腐蚀的发生。     

中间体苯基丙酮合成新工艺

实验研究了以氯化苄为原料合成药物中间体苯基丙酮的新工艺，该工艺由苄基氯化锌和苯基丙酮的2步合成反应组成，优化的工艺条件为：原料n(氯化苄）:n(Zn):n(乙酐）为1：1．2：2．5，苄基氯化锌的合成温度60－65摄氏度，反应时间3h，苯基丙酮合成温度30－35℃ ，反应时间5h，总收率72％。     

碳酸丙烯酯脱碳装置技术改造小结

在碳丙脱碳装置中增加了贫液氨冷器 ,改造了碳丙泵 ,增设了变换气氨冷器 ,从而提高了碳丙脱碳装置的吸收和再生效果     

Effect of scraped-surface tube cooler temperatures on the physical properties of palm oil margarine

The effects of scraped-surface tube cooler temperatures on the isothermal solid fat content (SFC) of palm oil margarine during processing and on margarine consistency (yield value, g/cm²), SFC, and polymorphic changes in storage were studied. SFC was measured in the mixing tank after leaving the tube cooler and the pin worker. The SFC at the tube cooler exit was proportional to the amount of cooling; a higher SFC was produced by more extreme cooling treatment. The SFC of all margarines were reduced in the pin worker, and the reduction was related to the initial SFC profile of palm oil. Margarine samples were stored at 28°C for 28 d and tested daily. Margarine processed at 25°C in the tube cooler had the highest consistency and the least change in SFC, but by the second week crystals had transformed into the β form. Uniform product consistency and SFC were observed in margarines processed at 20 and 15°C. These margarines retained the β′ crystal form for 3 and 4 wk, respectively. The best palm oil margarine was obtained with a tube cooler temperature of 15°C and a residence time of 1.8 min.     

氨合成塔催化剂中毒原因分析及处理

介绍合成塔催化剂因合成气压缩机段间水冷器泄漏而致水中毒的情况，分析水中毒的原因及处理过程，介绍了段间水冷器泄漏情况下装置的运行方案。     

2，4－二硝基－6－氰苯胺的合成研究

以水杨酸为原料，经硝化、酰卤化、氨化等三步反应，得到重要的染料中间体２，４－二硝基－６－氰苯胺，总收率７０．５％。     

一种合成4-氰基联苯的方法

以联苯为原料,经傅克酰基化、氨解、脱水三步反应合成4-氰基联苯,不产生含氰废水。4-氰基联苯的总收率达到70.70%,HPLC含量达到98%以上。