盐水过滤新技术的应用

介绍了试验引入上海西恩公司运用于钛白粉行业回收废水中钛白粉的CN过滤装置于一次盐水工序，提高了过滤效果，达到隔膜电解盐水指标要求。该装置投资低、运行简单、效果稳定，大大简化了盐水生产工艺。     

循环气过滤器与丙稀+PP材料滤袋性能比较

年产十万吨PP装置的F301循环气过滤器是压缩机进气保护和粉尘物料回收的关键装置。由于PP装置系统活化剂遇空气可自行燃烧,导致F301循环气过滤器在每次更换滤袋时丙稀+PP过滤材料随之燃烧,危害很大。F301循环气过滤器在更换过滤材料后,完全杜绝了自燃的可能性,且大大降低了使用成本。     

聚醚酮熔体过滤的研究

为了得到高纯度的聚醚酮产物,建立了一套新型聚醚酮挤出过滤装置对熔体进行过滤,研究了过滤的可行性,通过试验成功实现了聚醚酮产物的过滤,整个试验过程装置运行稳定,为聚醚酮过滤生产装置的研制和操作提供依据。     

油田污水处理研究

分析了油田污水的特殊性质,总结了其常规处理工艺及相关装置,重点分析了过滤技术在油田污水处理方面的重要性,并比较了常用过滤介质的性能特点。通过试验分析了油含量和聚合物含量对污水过滤处理的影响,指出了油田污水处理的难度所在。     

钯--炭回收过滤装置的研制

根据松香系列产品生产工艺的要求 ,研制了一种松香反应中钯—炭回收过滤装置。该装置的钯—炭回收率达到 99.9%以上 ,不留残液 ,滤液中不含钯—炭     

天然气过滤分离器工艺设计及全生命周期使用与维护

由于过滤分离器是输送天然气的管道系统不可缺少的一种装置，本文对天然气过滤分离器进行了工艺参数的设计与计算，并且为增加过滤分离器的精度及效率，设计了新型组合式叶片。对过滤分离器全生命周期的使用和维护进行了详细的说明；最后结合现场使用情况和反复的试验完成了天然气过滤分离器的设计。     

德士古碳黑过滤工艺简介

德士古碳黑过滤工艺简介玄恩锋（吉林化学工业公司化肥厂，吉林，１３２０２１）德士古碳黑回收技术有石脑油萃取和碳黑过滤两种方法。对于以渣油为原料的合成氨项目，选择碳黑过滤技术，尽管渣油耗量稍高，但不需要石脑油，氧耗也低，使得德士古整个装置的投资降低。过滤...     

己二酸活性炭过滤系统的设计与优化

通过分析研究己二酸生产装置脱色过滤系统现状,对过滤系统进行优化,创造性地设计了全自动清洗时序,优化了进料管线进料位置,并对清洗废液进行了回收。解决了目前活性炭过滤系统手动清洗劳动强度大、系统不稳定的现象,并降低了己二酸高纯水单耗,减少了生产废水排放,从而实现了节能减排的双重目的。     

全自动双层滤料废水过滤技术及装置

本文介绍了全自动石英砂、无烟煤双层滤料废水过滤技术及装置的试验和应用,详细说明了自动过滤、自动反冲的基本原理,运行机理及装置的结构。作为电镀废水化学处理后的二级固液分离设备,浑浊度一般可稳定在1mg/L左右,一般重金属离子能达到国家工业废水排放标准。该设备实现了过滤和反冲的全自动,减轻了劳动强度,过滤后的水能用于反冲或回用于生产,节省了能源。     

微波在吸滤式过滤干机上的应用研究

本文以过滤、干燥装置一体化研究开发为基础，为进一步提高装置干燥效率，缩短干燥时间，引入了微波技术在过滤干燥装置上应用的研究。对各种干燥方式的独立试验以及协同试验的效果进行了定量比较，同时对微波技术在过滤干燥机上的应用还作了技术与经济分析，并对将来的实用化作了预测。提出了微波技术在过滤干燥装置上以及其它领域的应用有待进一步研究开发的共同课题。     

无色分散剂在聚合物多元醇中的应用研究

使用自制的具有特殊双键结构、低黏度、无色透明分散剂(BDF-4)合成高固含量普通聚合物多元醇(POP)。实验表明,采用BDF-4合成的聚合物多元醇,不仅黏度低、粒子细腻,而且水溶性很好;同时,由于分散剂特殊的结构使得所制备的聚氨酯软泡具有较高的承载力。     

特种高、低硫肥煤优化配煤炼焦

分析了霍西煤田灵石特种高、低硫肥煤煤质特征,概述了特种肥煤的工艺性质指标及煤岩特征,并将其与本地普通高、低硫肥煤的性能进行了比较。进行了10个配煤方案的配煤炼焦生产实践,结果表明,科学配入特种肥煤后,焦炭质量稳定,配煤成本下降,经济效果显著。     

Seven-lump kinetic model for catalytic pyrolysis of heavy oil

A 7-lump kinetic model is proposed to describe the catalytic pyrolysis of heavy oil. The kinetic model contains 15 kinetic constants and one for catalyst deactivation. The experimental data were obtained in a confined fluidized bed reactor. The kinetic constants were estimated by a special program compiled based on the Marquardt’s algorithm. The apparent activation energies were calculated according to the Arrhenius equation. This model fits the experimental data well. The prediction shows that catalytic pyrolysis of Chinese Daqing atmospheric residue should be conducted at low space velocity to produce much ethene and at space velocity around 15 h⁻¹ to produce much propene and butene.     

Continuous Phase Mixing on Crossflow Extraction Sieve Trays

Abstract

Axial dispersion of a crossflowing continuous phase was studied in a special experimental system that simulated a “slice” from a large, commercial scale sieve tray extractor. The toluene-water system was used, and Peclet numbers were determined as functions of phase flow rates and tray geometry. It was concluded that for systems with relatively high interfacial tension, which give characteristically low point efficiencies, axial mixing is not an important issue in the design of sieve tray extractors.     

High and low surface area NiO–MgO and CoO–MgO solid solutions: a study of XPS surface composition and CO oxidation activity

Oxide solid solutions NiO–MgO of high surface area were studied by XPS. The surface Ni²⁺ concentration was found to be equal, within experimental errors, to the bulk concentration. The result is analogous to that found previously for the low surface area NiO–MgO system and for both the high and low surface area systems of CoO–MgO. The catalytic oxidation of CO by O₂, on high and low surface area NiO–MgO and CoO–MgO materials, was investigated with the aim of relating the catalytic activity with transition metal ion nature and concentration. Turnover frequency data (CO₂ molecules produced per second per surface atom) show that the activity is due primarily to the transition metal ions and is not subject to the ions being in special configurations (dimers or trimers) or in special positions (edges, corners). The activity of CoO–MgO is higher than that of NiO–MgO solid solution. This revised version was published online in June 2006 with corrections to the Cover Date.     

高固体分丙烯酸树脂的研制

合成丙烯酸树脂时加入一种特殊功能性单体,可制得低粘度的高固体分丙烯酸树脂。分析了该特殊功能性单体用量、树脂的理论Ｔｇ、溶剂组成与树脂粘度的关系。讨论了该低粘度高固体分树脂与ＨＤＩ缩二脲及ＴＤＩ－ＴＭＰ加成物配制的涂料性能。     

In‐Situ Tensile Testing of Propellants in SEM: Influence of Temperature

A tensile module system placed within a Scanning Electron Microscope (SEM) was utilized to conduct in‐situ tensile testing of propellant samples. The tensile module system allows for real‐time in‐situ SEM analysis of the samples to determine the failure mechanism of the propellant material under tensile force. The focus of this study was to vary the experimental parameters of the tensile module system and analyze how they affect the failure mechanism of the samples. The experimental parameters varied included strain rate and sample temperature (−54, +25 and +40 °C). Stress‐strain diagrams were recorded during the in‐situ tensile tests, and these results were coupled with the in‐situ images and videos of the samples captured with SEM analysis. The experiments conducted at −54 °C showed a different failure behavior of the propellant sample due to its rigidity at this low temperature, while experiments conducted at +25 and +40 °C displayed a similar failure mechanism. For future testing using this tensile tester, special attention should be given to improved temperature control of the specimen, especially at low temperatures.     

Combustion of Liquid and Gaseous Fuels in a Supersonic Combustor

Results of an experimental study of a full scramjet model operating on kerosene, which was performed in an IT-302M hotshot wind tunnel based at the Institute of Theoretical and Applied Mechanics of the Siberian Division of the Russian Academy of Sciences, and an experimental study of a model operating on hydrogen, which was performed in a hotshot wind tunnel with fire heating based at the China Aerodynamic Research and Development Center, are reported. The tests were performed for Mach numbers 5 and 6 for flow parameters close to in-flight conditions. An optimal system for kerosene injection under these conditions was determined, and the thrust characteristics of the engine model were examined. The possibility of controlling kerosene combustion in tests in the short-duration wind tunnel was analyzed, and special features of fuel ignition in a short combustor were considered. Intense combustion of kerosene was achieved with upstream injection of more than 3% of hydrogen, which allowed obtaining effective thrust. The distributions of static pressure and force characteristics of the model in the case of kerosene and hydrogen combustion were compared.     

JXD-1型临氢降凝催化剂应用研究

以改性ZSM-5分子筛为载体的JXD-1型降凝催化剂,对大分子直链烃选择性裂解,从而降低油品的凝点.阐述了通过选择合适的加氢精制催化剂和降凝催化剂JXD-1,采用加氢精制-临氢降凝组合工艺,在实验装置上生产出了合格的低凝点柴油,同时总结出了不同生产方案所需的操作条件.     

HPD-1型临氢降凝催化剂应用研究

以改性ZSM-5分子筛为载体的HPD-1型降凝催化剂,对大分子直链烃选择性裂解,从而降低油品的凝点。阐述了通过选择合适的加氢精制催化剂和降凝催化剂HPD-1,采用加氢精制一临氢降凝组合工艺,在实验装置上生产出了合格的低凝点柴油,同时总结出了不同生产方案所需的操作条件。