抑制1，3-丁二烯自聚合延长精馏系统运行周期

1,3-丁二烯自聚合问题一直是影响丁二烯抽提装置精馏系统长周期运行的瓶颈问题。结合理论与生产实际,探讨和分析了丁二烯抽提装置精馏系统1,3-丁二烯自聚合类型及聚合机理,以及引起聚合的原因。并针对分析出的引起1,3-丁二烯聚合的主要原因,找到相应的抑制自聚合的方法,并采取相应的措施,以延长丁二烯抽提装置精馏系统运行周期。     

如何有效防止苯乙烯生产过程中的聚合现象

针对宁波科元塑胶有限公司苯乙烯装置在开车期间发生两次较大的苯乙烯聚合事故，同时考虑到苯乙烯聚合问题是全国苯乙烯装置都面临的比较棘手的一个问题，本文主要从苯乙烯的聚合机理出发，特别详细介绍了链引发阶段对苯乙烯的聚合产生其关键作用，同时也分析了其他各种可能的原因，提出鲜明的观点，文章最后结合实际操作，在各个环节上尽可能避免苯乙烯聚合的发生，本装置从2009年11月运行至今经历多次开停车和检修、装置负荷变化等，基本无苯乙烯聚合事故的发生，保证了苯乙烯装置长周期的运行。     

化纤公司聚合装置及其发展前景

根据目前世界聚酰胺生产技术现状，针对化纤公司聚合装置实际情况及目前存在的问题，在聚合工艺改进与技术管理上，提出了聚合装置的发展设想。     

苯乙烯装置尾气压缩机系统长周期运行研究及对策

介绍了尾气压缩机系统运行中出现的问题,研究了系统聚合堵塞原因并分析了聚合机理,提出了创新性的技术对策和系统解决办法,确保装置长周期运行。     

丁二烯抽提装置汽提塔存在的问题及原因分析

乙腈法丁二烯抽提装置萃取系统聚合是影响生产装置长周期运行的关键问题之一。介绍了中韩(武汉)石油化工有限公司2#丁二烯抽提装置萃取系统汽提塔C-102运行存在的问题，分析确定了塔盘堵塞是其主因，并对堵塞部位进行了研究。通过采取相应措施维持改善装置运行状况，提出了避免塔盘堵塞的措施和建议。     

聚偏氯乙烯树脂装置的智能化提升

分析了现有聚偏氯乙烯（PVDC）树脂生产装置存在的问题,主要有较多的手动操作,员工操作不一致使产品各批次质量不稳定;与国外先进控制相比,仍存在一定差距。通过采取聚合备料和助剂系统装置优化、投料系统和聚合温控优化等措施,实现了聚合系统零操作,岗位劳动强度大幅降低,每年产生经济效益599.6万元。     

混合法聚氯乙烯糊树脂生产装置出料系统的改造

针对混合法聚氯乙烯糊树脂生产装置出料系统易被塑化物堵塞的问题进行了工艺改造，新增了篮式过滤器及去离子水冲洗管线，提高了聚合釜的利用率，降低了安全风险。     

大型锦纶6聚合装置国产化的进展和展望

从提高项目的经济效益的角度论证了大型锦纶６装置国产化的必要性，介绍了前几年锦纶６聚合装置国产化的进展，展望了实现大型锦纶６聚合装置国产化的前景，并提出了今后国产化中应注意的一些问题。     

齐鲁研究院探索PVC聚合体系

中国石油化工股份有限公司齐鲁分公司研究院近日完成示踪剂法检测氯乙烯聚合动力学系统的装置搭建、系统调试、方法建立等系列探索工作，并编制出相应试验报告。该项目为氯乙烯聚合开拓出新的研究思路，不仅为新产品聚合体系中的引发体系提供了可预测、可模拟、可控的试验方法，而且可以为工业化的聚合工程提供关键数据。     

J-0010二元乙丙橡胶聚合单元生产控制与优化

J-0010二元乙丙橡胶由于其门尼黏度低、相对分子质量分布较窄导致聚合控制困难,因此装置运行过程中暴露出催化剂系统、氢气进料系统存在隐患问题,通过改造催化剂进料系统、优化氢气进料控制工艺,消除装置隐患问题,提高了产品质量稳定性。     

Effects of the sludge reduction system in MBR on the membrane permeability

For the sludge volume reduction, gravity thickening and mechanical thickening processes have been mainly applied. However, these processes usually cause several problems such as large footprint, low thickening efficiency, etc. To solve these problems, a sludge reduction system using submerged membrane in a reactor with excess sludge from a biological nutrient removal (BNR) system was investigated. Both lab and pilot scale experiments for sludge reduction were carried out. The hydraulic retention time (HRT) was in a range of 4.5-6.7 days during the experimental period. A flat-sheet membrane with a mean pore size of 0.08 µm was used and operated at a flux range of 7-20 L/m²·h.During the experimental period, concentrations of BOD and SS were maintained less than 8 mg/L, 3 mg/L, respectively, which indicated the high quality of treated wastewater. While extracellular polymeric substances (EPS) were lowest at a coagulant concentration of 15 ppm, soluble microbial product (SMP) concentrations did not have any correlation with coagulant concentrations. The critical flux was observed in a range of 18-24 L/m²·h.These results suggested that the sludge reduction system using membrane bioreactor (MBR) could be applied as one of suitable processes to overcome problems of conventional processes such as gravity and mechanical thickening.     

Review of desalination plant operating experiences

Recent operating experience reports of water desalting plants reveal that quite a few of these water desalting plants operate substantially differently from what they were designed to. The reports also show that their desalted water costs are substantially greater than was contemplated in the initial economic planning of the system.Reported problems for these conditions include the total spectrum of plant operation criteria. Some plants are plagued with a greater number of shutdowns and plant maintenance needs, thus yielding a lower than expected onstream availability factor. Other plants through aging are no longer able to maintain their design capacities, and also require higher energy consumption than during the initial operation period. In summary, most desalting plants have not been able to produce either the amount of pure water at their expected cost, or operate satisfactorily over the full expected life of the system.The paper will evaluate some of the causes of these reported problems and will recommend possible remedies.     

4000吨/年硫磺回收装置焚烧系统技术改造

介绍了陕西延长石油集团延安石油化工厂硫磺回收装置焚烧系统从开工运行到实施技术改造前存在的问题,包括:液化气脱硫醇尾气问题、焚烧炉助燃风问题、焚烧炉温度变送器问题、焚烧炉尾气余热利用等问题,并进行了改造,改造后焚烧系统运行良好。     

离子膜法烧碱生产中曾发生的问题及解决办法

详细阐述离子膜法烧碱生产中（含二次盐水、脱氯及电解系统）曾发生的问题、事故原因和采取的办法,并从中找出经验教训及预防措施。     

离子膜法烧碱生产中曾发生的问题及解决办法

详细阐述离子膜法烧碱生产中(含二次盐水、脱氯及电解系统)曾发生的问题,分析原因和采取的办法,并从中找出经验教训及预防措施。     

离子膜法烧碱生产中曾发生的问题及解决办法

详细阐述离子膜法烧碱生产中（含二次盐水、脱氯及电解系统）曾发生的问题,分析原因和采取的办法,并从中找出经验教训及预防措施。     

纺丝组件三甘醇清洗系统的改造

介绍了三甘醇 (TEG)清洗系统的工艺流程和所存在的主要问题是自然冷却时间太长和TEG蒸气泄漏。提出该系统的改造方案为变自然冷却为强制风冷 ,把清洗釜盖的密封改为榫槽式 ,使改造后的TEG清洗系统达到了国际通用的HSE(健康、安全、环境 )的标准 ,缩短了TEG清洗后的冷却时间 ,罐体密封更加严密 ,清洗快捷、方便     

理工科本科毕业论文中存在的问题及对策

从自身教学实践出发,在充分调研的基础上,对理工科本科毕业论文在选题、前期准备、实验过程、论文内容及撰写等方面存在问题进行了分析总结,并针对这些问题提出了几点可行性的建议。     

转型期中的建筑环境与能源应用工程专业发展的探索

以建筑环境与能源应用工程专业发展为研究对象,结合转型期中人才培养的专业教学要求,对实行本科职业教育的地方院校建筑环境与能源应用工程专业教学的培养方案、教学体系、教学大纲及内容、实践指导和存在的问题进行了探讨,同时提出了转型期中的专业发展的具体改革思路。     

A Review of Ozone Generating Facilities in Some U.S. Water and Wastewater Treatment Plants

In previous years, the start-up and operation of ozone systems at U.S. municipal water and wastewater treatment facilities has resulted in numerous problems. Some of these problems were of such a magnitude that the operating agency decided to abandon the ozone system. In other cases, the system is operating and the problems are resolved. An investigation of 11 U.S. facilities was conducted to determine what problems were experienced and how the problems were resolved.