天然气制氢技术在氯碱生产中的应用

介绍了天然气制氢技术在氯碱生产中的可行性及生产工艺和流程。对开车运行以来的生产进行了总结。此技术的成功应用,为氯碱企业平衡生产中的氯气产能、解决氯气的安全贮运问题提供了经验。     

氯碱企业生产过程中重大危险源分析

分析了氯碱企业生产中易发生安全生产事故的重大危险源——氢气和氯气，建立了数学分析模型。对氯碱化工生产过程中的氢气系统、氯气系统提出了安全控制措施。     

氯气压缩机的扩能设计

介绍氯气压缩机的工作原理及其在高温高压法液氯生产中的作用,经计算,并结合设备检修和生产实际找出提高压缩机转速是氯气压缩机扩能改造的最佳方案,氯气压缩机的生产能力可提高10%以上.     

氯气全分析方法的探讨

用气相色谱对离子膜烧碱生产中产生的氯气进行了纯度分析，探讨了对氯气中所含少量氢、氧、氮、微量二氧化碳和干氯气中的微量水等的分析方法。     

提高氯气干燥效率的技术措施

1概述我厂氯碱产品中的碱产品是氢氯化钾,是采作电解氯化钾盐水的方法制得的。氯产品主要有氯化苯、氯化石蜡和液氯。氯气是电解法制碱的两种气体产物之一是生产氯产品的重要原料。从电解槽出来的氯气含有大量的水分,需除去水分后才能用于生产氯产品。除掉湿氯气中水分的工艺过程是:电解槽产生的湿氯气通过塑料管进入水冷器和盐水冷却冷凝器,在此可把气体中的大部分水蒸汽冷凝下来;冷却后的氯气再进入干燥塔,在塔内与从塔顶流下来的硫酸接触,经硫酸吸水后,再用氯压机把氯气输送到用氯岗位。氯气含水量的高低对氯化苯、液氯和氯化石蜡的生产…     

氯气处理系统简介

介绍了从国外引进的氟里昂制冷氯气处理系统；通过冷却，过滤和干燥，除去电解生产湿氯气中的水分，再经压缩，液化，存储后供下游工序使用或装瓶，并重点介绍了该系统的主要设备；氯气干燥塔，氯气压缩机组和液氯储槽；在3年的生产运行中，该设备和工艺可满足氯碱生产需要。     

不断完善生产工艺降低氯气对环境的污染

不断完善生产工艺降低氯气对环境的污染电解生产过程，氯气流失主要有两部份：（１）生产过程中的排放从电解槽出来的湿氯气，含有大量的水蒸汽，在输送和冷却过程中，水蒸汽冷凝成水同时有少量氯气溶于这部份水中，这便是被排入工业下水的氯水。经冷却后的氯气再用硫酸干...     

氯气干燥中浓硫酸酸泥的成因及防治措施

在氯碱生产中,氯气的干燥处理都是用浓硫酸作干燥剂,来吸收氯气中的水分,由于种种原因,通过浓硫酸及干燥后的氯气的管道、设备(如硫酸槽、泡沫塔、填料塔)中,常会积存大量的酸泥,使管道和设备通氯气的阻     

国产小型氯气透平压缩机运行

介绍国产小型氯气透平压缩机的内部流程。针对小型氯气透平压缩机运行中出现的各种问题(轴振动波动大、漏氯气、压缩机性能下降、油压低等),给出相应的解决措施。提出生产中的注意事项和控制措施,以确保压缩机长期、安全、稳定、高效运行。     

简述偏二氯乙烯装置工艺设计中采取的安全措施

偏二氯乙烯生产采用氯乙烯氯化法,以氯乙烯和氯气为原材料。由于氯气、氯乙烯危害性较大,偏二氯乙烯生产过程中的氯化反应极其危险,因此,根据相关法律法规和标准规范的要求,提出工艺设计中采取的一些安全措施供参考。     

隔膜碱氯气透平压缩机开车跑氯的解决方法

介绍了隔膜碱系统初开车过程中,因氯气透平压缩机自身保护所引起的氯气系统不能形成有效负压,造成电解以及事故塔可能跑氯,并提出解决方法。     

国内外氯市场供需状况分析及展望

从国际、国内两方面简析了氯的生产、供需状况 ,及生产与消费结构 ,并展望了氯市场的发展前景。提出氯碱企业需进行结构调整的发展出路     

液氯消毒与二氧化氯消毒的比较及应用前景分析

消毒是城市供水系统中最基本的水处理工艺。在城市给水处理中,消毒方法有很多,本文对水处理中传统的液氯消毒与新兴的二氧化氯消毒进行了详细的比较,并将两种消毒剂在沈阳市未来几年的应用前景做一分析。     

EPS在氯碱事故处理中的重要作用

介绍了一种针对氯碱厂突发全厂停电事故而致使生产系统停车时,对氯气事故处理系统提供的可靠应急电源,它可以在外电全部失电的情况下对大功率的氯气事故处理系统机泵实行无时限切换,并提供30 min以上的380 V交流电源,足以使停车后系统中残存的氯气在事故塔中吸收中和,确保人身安全,避免环境污染事故。     

Self‐assembled nanostructures of diblock copolymer films under homopolymer topcoats

To mitigate the interface energies of block copolymers with high interaction parameters, a topcoat strategy has been experimentally proposed to produce perpendicular oriented domains on a length scale of sub‐10 nm. However, the origin of perpendicular oriented domains and the effect of topcoats on the self‐assembled nanostructures remain to be uncovered. Herein, we use the dynamic self‐consistent field theory to explore the self‐assembly behaviors of symmetric block copolymer films under homopolymer topcoats. It is clearly demonstrated that the introduction of homopolymer topcoats enables a wide formation range of perpendicular oriented lamellae, originating from the fluctuating diblock copolymer/homopolymer interfaces in the process of in‐plane microphase separation of block copolymer films. Our simulation results also demonstrate that the formation range of perpendicular oriented lamellae can be tuned by changing the wetting properties of homopolymer topcoats and the thickness of block copolymer films, but is weakly dependent upon the chain length of homopolymers. Our theoretical findings have wide implications for understanding the formation of perpendicular oriented domains of block copolymer films, which are important for the rational design of self‐assembled nanostructures with new horizons for block copolymer lithography. © 2020 Society of Chemical Industry     

‘Bricks and mortar’ nanoparticle self‐assembly using polymers

Developments in self‐assembly methods allow access to hierarchical materials featuring a wide range of functionality and applications. Polymer‐based self‐assembly of nanoparticles opens up new avenues for the fabrication of highly structured nanocomposites that can serve as bridges between ‘bottom‐up’ and ‘top‐down’ methods. Of various interactions leading to self‐assembly of nanocomposites, hydrogen bonding and electrostatic interactions are commonly utilized. In this review, we illustrate the design and subsequent property tuning of various self‐assembled nanocomposite materials that were developed based on these interactions. Copyright © 2007 Society of Chemical Industry     

环己胺的生产技术与应用前景

介绍环己胺的性质、生产技术及应用。并提出氯碱厂应因地制宜,利用自产氢气、氯 气、烧碱等原料的优势生产环已胺,有利于降低成本、增加效益。     

Preparation of novel hybrid inorganic–organic hollow microspheres via a self‐template approach

BACKGROUND: Hollow microspheres, especially biodegradable polymeric microspheres, have attracted considerable attention due to their particular characteristics. Up to now, microspheres have been prepared via various strategies, for instance the template synthesis method and the self‐assembly process. However, economic, novel and simple methods to prepare hollow microspheres are still being sought. RESULTS: Phosphazene‐containing microspheres, which contain self‐assembled core‐shell structures, were prepared at high colloid contents using an ultrasonic bath via a self‐template approach. Along with the controlled self‐degradation of the internal core, the corresponding hybrid inorganic–organic hollow microspheres appeared. The mechanism was evidenced by means of transmission and scanning electron microscopy, cross‐polarization with magic angle spinning NMR, Fourier transform infrared spectroscopy, X‐ray diffraction and thermogravimetric analysis. CONCLUSION: It was clarified that the phosphazene‐containing microspheres could be formed and stably dispersed without aggregation even at high colloid contents using the ultrasonic bath method and the microspheres contain self‐assembled core–shell structures. Along with the controlled self‐degradation of the internal core, the corresponding hollow microspheres appeared. The mechanism of this preparation is of great significance because it is completely different from the conventional template synthesis method and the self‐assembly process. The absence of any stabilizing agent and special templates might inspire creative imagination in the design of new morphologies of micro‐ and nanostructures. Copyright © 2007 Society of Chemical Industry     

管道分质供水TCCA消毒方法

对三氯异氰尿酸(TCCA)消毒法在管道分质供水中的应用进行了研究。结果表明,利用TCCA消毒管道分质供水,只要控制管网水中余氯质量分数>3.0×10-8,就能起到良好的消毒效果,并能有效的控制消毒副产物,使管道分质供水具有较好的口感。采用的TCCA消毒法在管道分质供水工程具有广泛应用前景。     

液化机组在冷冻除硝中的应用

从节电和安全方面考虑,对长期空负荷运转的氯气液化装置进行技改,为一次盐水冷冻除硝装置提供冷量,取得了很大的经济效益,值得在氯碱生产中借鉴交流。