膜法除硝工艺中冷冻单元的设计方案及效果

介绍了新疆天业(集团)天辰化工有限公司膜法除硝冷冻单元的设计思路,总结了该工艺在设计及运行过程中的改进要点及效果.     

除硝冷冻系统技术改造及运行总结

介绍了膜法除硝冷冻系统的优化改造,通过新技术的应用,达到了节能降耗的目的。     

膜法-冷冻脱硝工艺过程分析

介绍膜法-冷冻脱硝的工艺原理及工艺过程,利用膜法-冷冻技术将返回淡盐水中积累的硫酸根以芒硝的形式从盐水系统中除去,通过淡盐水预处理、纳滤膜浓缩、浓缩液冷冻、离心分离等四个过程来实现除硝工艺,总结归纳生产过程中常见设备的故障和膜污染物的特征并给出处理方法。     

除硝冷冻系统技术改造及运行总结简

摘要：介绍了膜法除硝冷冻系统的优化改造，通过新技术的应用，达到了节能降耗的目的。     

膜法除硝冷冻系统技术改造及运行总结

介绍了新疆天业化工有限责任公司对膜法除硝冷冻系统进行的技术改造和改造后的运行情况。     

全卤制碱中除硝方法及冷冻法除硝的实际应用

对钡法除硝、钙法除硝、冷冻法除硝及膜法除硝进行了比较,总结了冷冻法除硝在湖北沙隆达股份有限公司的应用问题.     

膜法除硝技术与传统钡法技术的探讨

介绍了膜法冷冻除硝技术、传统钡法技术在处理盐水系统硫酸根方面的应用情况,并在环保以及经济效益方面做了比较。     

膜法冷冻脱硝装置运行总结

介绍了新疆天业天能化工有限公司膜法冷冻脱硝装置的工艺设计思路及工艺流程。总结了该工艺在设计及操作过程中应注意的问题。     

膜法除硝工艺简述及冷冻提硝单元改造

介绍了新疆中泰化学(集团)股份有限公司50万t/a离子膜法烧碱配套膜法除硝工艺,总结了冷冻提硝单元改造情况。     

淡盐水中CIM膜法除硫酸钠技术应用

以C IM膜法加冷冻技术浓缩来自离子膜电解工序淡盐水中的硫酸钠,并使其以十水芒硝形式分离出来,保证了离子膜进槽盐水中的硫酸钠达到平衡,同时实现系统的零排放。与传统的氯化钡沉降法相比,该法大大节省了运行成本,且无毒无害,无二次污染。     

纯碱法生产氟化钠的分离方法

纯碱法生产氟化钠晶体的生产工艺具有原料易得,工艺流程短,投资少,上马快,不产生"三废",对设备的腐蚀小等特点,但是产物氟化钠和二氧化硅会发生共沉淀现象,实现氟化钠晶体和二氧化硅的分离难度很大,这就影响了该工艺的推广。介绍了纯碱法生产氟化钠中所采用的氟化钠与二氧化硅的主要分离方法,包括特制固液分离装置法、硅胶新型分离器法、双锥分离器法及两步沉降法,同时指出各种分离方法的优点及存在的问题,最后,提出了改善各种分离过程存在问题的个人建议。     

矿山岩石突出危险预测的新方法──矿井微重力测量法

介绍了岩石膨胀诱发重力异常的物理原理和用矿并微重力测量预测岩石突出危险的机理及实现过程。     

Determination of clay plasticity: Indentation method versus Pfefferkorn method

As a basis of ceramic process development, raw material selection plays a fundamental role in the final product design. For correct material selection, knowledge regarding all the properties of the raw materials should be obtained. Plasticity is one of the most important properties for molding clay products. Nevertheless, the standard methods in use, including the Pfefferkorn method, are not precise and reliable. They are based on subjective qualitative information and are dependent on technical skills. The literature shows some attempts to improve the test method, all based on the force needed to indent a clay sample surface with specific water content. Four different clays were studied and the plasticity values due to the Pfefferkorn method and the indentation test were compared. The results showed that the indentation method is reliable and more precise compared to Pfefferkorn. It is also faster and more practical.     

ISO法与GB法的对比实验研究

实现水泥国家标准及物检方法向ISO国际标准过渡,对我国水泥行业是一次深刻变革,水泥企业必须打破传统的工艺技术控制模式与生产组织方式,针对企业特点寻求最佳过渡路径.文章从熟料组成设计、颗粒级配、外加剂添加和代用混合材使用四个方面分别按目前的国家标准与即将实施的ISO标准组织对比试验,找出了ISO物检方法对水泥质量的影响规律.     

Design method for multi-component distillation system based on quasi-binary method

A novel design method for a multi-component distillation system based on the quasi-binary model is presented. The quasi-binary method, which converts the multi-component system to a quasi-binary system, could simplify the design process of multi-component distillation. Subsequently the software integration method is introduced to the distillation design and an automatic calculation program is developed by using Visual C++ language. The design of multi-component distillation, in which the minimum reflux ratio R _min or liquid-vapor ratio (L/V) _min and the minimum numbers of stage N _min is determined easily and quickly, is automatically performed by the technology of software integration. Three examples are solved to demonstrate the feasibility and effectiveness of the presented method for the multi-component distillation. Supported by the National Nature Science Fund Program of China (No. 20376078).     

测定挥发分仪器法与标准法的对比

根据GB／T212--2007中规定测定挥发分,通过实验对自动工业分仪法测定挥发分的结果与标准法测定挥发分的结果进行对比,结果表明,自动工业分仪法能减轻化验员的劳动强度,提高工作效率,化验结果快速而准确。     

凝胶层析法测定蛋白含量的方法

利用蛋白纯化仪建立一种凝胶层析测定蛋白含量的方法,采用HiTrapTMDesalting 5×5 mL色谱柱,流动相为超纯水,以蛋白浓度为横坐标,以蛋白出峰面积为纵坐标,建立标准曲线。与BCA试剂盒法比较,BCA试剂盒法相对误差范围为9.13%～144.00%,此法的相对误差范围为0.78%～44.72%,可见凝胶层析法测定结果准确性高,操作简单,快速,是一种可行的测蛋白含量的方法。     

Foam test method

This method measures the height of foam developed by pouring. The action is intermittent, time being alloted strictly for foam decay, as well as for foam generation. Comparative or duplicate tests can be prolonged indefinitely, or until a steadied state is reached. Tests on solutions may be carried out at various temperatures and in the presence or absence of soils, or foamicides, that may be added at any time. Foam heights can be measured with reasonable precision.