离子膜电解槽运行中的问题及解决办法

介绍了自贡鸿鹤化工股份有限公司离子膜电解槽近两年来在运行中出现的问题及解决措施，阐述了加强管理、稳定和提高离子膜电解运行效率的具体措施，提出了离子膜电解运行管理是一个系统管理过程的观点。指出实际生产中，加强离子膜电解槽运行管理，保持离子膜烧碱生产的正常、安全、连续平稳运行，减少开、停车次数，是离子膜电解槽高效运行的重要措施。     

AZEC-B1装置在我厂试车运行情况总结

锦化化工 (集团 )有限责任公司引进日本旭硝子公司的AZEC -B1(70 )复极式离子膜电解槽 ,进行12万t/a离子膜烧碱的生产。介绍了离子膜电解槽的结构特性 ,装置试车及运行中出现的一些问题 ,并分析了问题出现的原因     

离子膜电解槽极网改造问题探析

针对离子膜电解槽极网改造过程中出现的问题,对改造方案、检查、包装、运输等方面提出相应的解决办法。改造后提高电解槽运行性能,降低离子膜在运行中的风险。     

三效逆流降膜蒸发装置运行总结

介绍了三效逆流降膜蒸发离子膜电解碱液的原理、生产特点和工艺流程,总结了运行过程中出现的问题及解决方法.     

二次盐水及离子膜电解工序常见问题简析

介绍了二次盐水及离子膜电解工序的主要设备和流程,对二次盐水及离子膜电解工序运行中出现的问题进行了分析,并提出了解决措施。     

ML－32NCH离子膜电解槽检修总结

总结了ML－32NCH离子膜电解槽检修中注意的事项,针对检修中出现的问题,采取相应措施,提高了检修效率和质量,为离子膜电解槽长期高效稳定运行提供了有力保障。     

离子膜电解槽运行中出现的问题及解决方法

分析了离子膜电解生产运行中出现的问题,并提出解决方法和防范措施。     

75t/d离子膜烧碱装置运行总结

介绍了75t/d离子膜烧碱装置的工艺流程、设备选择、运行情况及运行中出现的问题和解决办法,讨论了参与国外项目运行中的注意事项。     

4万t/a离子膜整流装置的运行总结

介绍了国产化离子膜电解整流设备在新疆天业股份有限公司在河子中发化工有限责任公司4万t/a离子膜烧碱技改工程中的运行情况，并阐述了该装置在运行中出现的问题及解决方法。     

离子膜电解槽运行总结

介绍了离子膜制碱工艺中,树脂塔、电解槽、脱氯塔运行过程中出现的一系列问题及解决办法。     

Extraction into a flow of a fluid with a velocity gradient

Unsteady extraction from a system of semi-infinite capillaries to the flow of a fluid with a linear velocity gradient is studied. An assumption that the diffusion in the flow is a quasi-steady-state process is taken to obtain a linear equation for the local mass flux from the pore space, which involves fractional derivatives with respect to time and flow coordinate. Limiting solutions for the total diffusion flux at small and large times that cover the entire time interval are found.     

Electrolytes: From a Thorn Comes a Rose,and from a Rose,a Thorn

In this article we take a stroll through the metaphorical rose garden, part of the flower garden, that is electrochemical storage systems. We take a closer look at batteries as the center‐pieces – the roses – and especially at the system component of batteries, the electrolyte and its development, throughout history. Just as a rose can only develop its unique beauty when taken good care of and provided with clean water and suitable nutrients, a battery cell cannot function without its electrolyte; the seemingly trivial component that has to juggle a multitude of requirements in order to make batteries truly bloom.     

Propagation of a burning front over a condensed material from a focus

Measured propagation speeds are given for the combustion front in a blind gap in a condensed substance, which are related to gap height and mean pressure. The front may propagate monotonically, which is characteristic of relatively high pressures and wide gaps, or as a result of additional burning foci arising at a certain distance from the main front. At low pressures and particularly with small gap heights, the front propagates in an unstable fashion over the surface.Moscow. Translated from Fizika Goreniya i Vzryva, Vol. 28, No. 4, pp. 49–53, July–August, 1992.     

Mesomorphic transitions in a mixture of a flexible and a semi-rigid polymer

Phase studies on a mixture of two polymers are presented, one of which is mesomorphic. We have systematically examined the influence of the molecular weight of the flexible polymer (including the oligomers) and of the semi-flexible polymer. In addition to the effect of the molecular weight, specific interactions are important for compatibility and formation of a homogeneous mesomorphic phase. The nature of this phase is demonstrated to be cholesteric and the pitch is determined.     

When is a Beam a Plate?

Formulas associated with simple beam or plate theories are used extensively in structural design, to determine You's modulus, and to determine fracture strength of brittle nonmetallic materials. The question may arise as to whether the proper ratio of beam-width-to-beam-depth is such that the bent structural element can be considered as a beam and, if not, what is the correction factor that should be used with the simple beam formula. These questions are answered for a range of structural metallic and brittle nonmetallic materials.     

Laminar flow deformation of a droplet adhering to a wall in a channel

We study the deformation of oil droplets of varying viscosity adhering to a solid, rigid wall in a rectangular channel induced by a pressure-driven, laminar flow of water. Our experimental investigation involves the systematic study of the effects of initial droplet volume, flow rate and viscosity ratio on the various modes of droplet motion and deformation; this is performed via direct visualisation of the flow in a glass cell using a high-speed camera. Our results are used to construct flow maps that delineate the critical conditions for droplet ‘sliding’, ‘crawling’ and detachment from the channel wall as a function of system parameters. Comparisons of our experimental results with numerical predictions obtained using a procedure based on the diffuse-interface method yield reasonably good agreement for certain flow regimes.     

Detonation of a Column of a Chemically Active Bubbly Medium in a Liquid

The problem of a detonation wave propagating in a cylindrical column of a chemically active bubbly medium screened by a liquid from the tube walls is formulated and numerically solved within the framework of the Iordanskii–Kogarko two-phase model with allowance for energy dissipation due to acoustic radiation of bubbles. The wave structure of the reaction zone and the detonation velocity of the bubbly medium column are calculated. It is found that the self-sustaining wave can propagate with a velocity greater than the velocity of one-dimensional bubble detonation by a factor of 1.5–2.5.