高纯盐酸生产新工艺

介绍濮阳市氯碱厂改进原盐酸生产工艺,生产高纯盐酸的过程,并分析了改进前后的经济效益和社会效益。     

高纯盐酸的合理生产

介绍了“三合一”石墨炉法生产高纯盐酸工艺的改进,确定了最佳工艺流程。结合生产实际提出了注意事项和操作要点。     

高纯盐酸合成工艺

简要介绍氯碱工业发展和氯碱工业的平衡问题,以及高纯盐酸合成技术的最新发展。并详细介绍了各种合成工艺的流程,如喷淋洗涤法、脱吸吸收法、三合一炉法等,并对这些流程的优缺点进行了简单的比较。     

高纯盐酸中钙镁离子的控制

分析高纯盐酸中钙镁离子的来源（如原料、冷凝酸、管道、阀门、密封件、盐酸贮槽）,提出了相应控制措施.     

浅谈用废氯生产高纯盐酸

本文主要介绍用废氯在三合一炉内合成高纯盐酸工艺过程、生产注意事项，以及在我厂的使用成效。     

高纯盐酸中游离氯的脱除技术

介绍了高纯盐酸中游离氯对离子膜法烧碱生产的危害，亚硫酸钠脱除游离氯的原理以及在高纯盐酸中应用的工艺技术。     

三合一炉生产高纯盐酸

简介了三合一炉,叙述了三合一炉生产高纯盐酸的工艺流程、优点及不足与改进。     

高纯盐酸中游离氯含量的准确测定

阐述了高纯盐酸现行的分析方法，ICP-AES发射光谱仪法和《氯碱生产分析》手册所载分析方法，探讨了KI溶液的加入量、在暗处放置时间、试剂瓶是否加塞密封等因素对测定结果的影响。     

高纯盐酸及氯化氢工艺的优化

通过对氯化氢吸收工艺进行改造,将生成的不合格盐酸重新吸收为合格盐酸。     

高纯盐酸生产过程中氯气系统的改进

介绍了高纯盐酸生产过程中氯气系统存在的问题并提出了相应的改进措施。     

改进设备与工艺,提高高纯盐酸质量

青岛海晶化工集团有限公司通过对高纯盐酸生产工艺与设备进行改造,防止了环境因素对生产造成的影响,生产出了满足离子膜法烧碱生产要求的高纯盐酸。     

Electrodeposition of copper from pure cupric chloride hydrochloric acid solutions

Electrodeposition from CuCl2–HCl media has been investigated to establish a clean and direct method of copper extraction from cupric chloride solutions purified by anion exchange. The major difficulties of the process – cathode corrosion, CuCl precipitation and roughness of the deposit – were taken into consideration. To prevent contamination, no chemical agents or additives were used in the electrolyte preparation. The workable range of electrolyte composition was approached from a computer aided stability study of the different aquo- and chloro-complex copper species. Experiments suggested that coordination of the fundamental electrolysis parameters can ensure acceptable copper deposits and current efficiencies. A special method of agitation proved effective in improving the conditions.     

Influence of hydrochloric acid concentration on the demineralization of cortical bone

Although demineralized bone matrix has been considered a successful grafting material, combining both osteoconductive and osteoinductive properties, conflicting results have been published in the literature regarding its bone-inducing abilities. This may be a consequence of following different demineralization procedures that naturally result in products with different properties.The present work examines the evaluation of the demineralization process of similar samples of human cortical bone using three different concentrations of hydrochloric acid solutions (0.6 M, 1.2 M and 2.4 M). Sample calcium content was determined (by Atomic Absorption Spectroscopy) at various immersion times, allowing the construction of the corresponding kinetic profiles. Phase and chemical composition were enabled by X-Ray Diffraction Spectroscopy and Fourier Transform Infrared Analysis, respectively. Structural modifications were followed by Light and Scanning Electron Microscopy and quantified by mercury porosimetry (in terms of porosity and pore size distribution).As expected, increasing the acid concentration led to an increase in the demineralization rate, but not in a proportional way. However, one of the most significant effects of the acid concentration was found on the sample structural features. In fact, a considerable increment in porosity was detected for the sample subjected to the highest hydrochloric acid concentration. Microscopic observations demonstrated that despite the structural deformation resultant from demineralization, the basic microstructure was preserved.     

盐酸波美测浓装置探讨

１　现行盐酸波美测浓装置简介现行盐酸波美测浓装置主要有间歇式和连续式。间歇式是将波美测浓装置安装在产品盐酸的管道上,位置一般在操作室观察不到,安装方式如图１所示。测量浓度是由操作人员在巡回检查时通过调节有关阀门,先向装置注酸,测定对应的相对密度和浓度,测完将酸放掉,查表得浓度。１温度计;２波美表;３孔板图１　间歇波美测浓装置安装示意图连续式盐酸波美测浓装置是通过管道引到操作室容易观察到的地方,安装方法如图２。通过阀门调节,让盐酸以稳定的流量连续不断地通过测量装置。波美情况可以在操作室内直接观察,…     

亚沸蒸馏制备超净高纯盐酸工艺条件的研究

介绍了一种制备超净高纯盐酸的工艺路线:以优质工业盐酸为原料,经过蒸馏、过滤、洗涤、吸收、亚沸蒸馏,得到的超净高纯盐酸中主要金属离子的质量分数均小于1.0×10-10。对亚沸蒸馏提纯技术中影响产品产出速率以及产品浓度的工艺条件(包括液面温度、冷却水流量、进料速率以及进料浓度)进行了讨论。     

泡沫塑料法在高浓度盐酸溶液中吸附回收锗

研究了用聚氨酯泡沫塑料吸附分离富集微量锗的性能。结果表明,在盐酸溶液中泡塑对微量锗具有显著的吸附性能,最佳吸附条件为:盐酸浓度10 mol/L,泡塑与含锗溶液的固液比为1 g/50 mL,吸附时间1 h,吸附率可达80%,可获得最大吸附量为6.056 mg/g。实验发现,在铁离子共存下,锗的吸附效率明显有所提高,共存离子铁离子能起到协助吸附效应。     

高纯盐酸生产工艺及其改进

高纯盐酸是氯化氢的高纯水溶液,无色透明,是一种重要的工业原料,用于化学、冶金等工业,在食品、医药行业中用量日趋增大。 我公司于1995年引进两台SHL-30型三合一