高矿化度介质中CO2对APIN80钢腐蚀规律的研究

通过挂片失重法研究了ＣＯ２分压Ｎ８０钢在高矿化度介质中的腐蚀规律,结果表明ＣＯ２在腐蚀过程中起着催化作用,其中,腐蚀速度和ＣＯ２分压满足ｌｇｖｃ＝１．００５８＊ｐｃｏ２－０．４０９５,结合扫描电镜对表面形貌观察及表面腐蚀产物的Ｘ射线衍射分析,发现随着ＣＯ２分压的增大,不仅腐蚀速度增大,而且不均匀腐蚀的程度增大。同时,在含ＣＯ２的高矿化度介质中有轻微的ＣａＣＯ３结垢。     

一次盐水精制工艺改造及分析

对一次盐水精制工艺存在的问题提出改造方案,并对改造前后进行对比分析。     

关于我厂盐水系统SO_4~(2-)问题的讨论和建议

我厂３万ｔ／ａ离子膜烧碱所用盐水是由引进瑞士苏尔寿公司的“盐硝联产、热法提硝”装置提供的,除ＳＯ２－４外其它杂质含量低。但盐水经处理进入电槽后,淡盐水中ＳＯ２－４含量将不断增加。分析盐水中ＳＯ２－４累积的原因,并提出了ＢａＣｌ２去除ＳＯ２－４的设想,说明了此法经济的可行性。     

空气吹溴设备吹出塔的工艺计算

文章对利用中级卤水为原料,用空气吹出法制溴的关键设备——吹出塔进行工艺计算,并与北方海盐区几套工艺比较成熟的设备进行了参数对照。     

纳滤膜法除硫酸根技术进展

从工艺及工程角度比较了去除SO4^2-的几种方法,对纳滤膜法脱除SO4^2-的技术进行了详细论述,并探讨了该技术的后处理方法。     

Ozone-biological activated carbon as a pretreatment process for reverse osmosis brine treatment and recovery

Ozonation was used in this study to improve biodegradability of RO brine from water reclamation facilities. An ozone dosage ranging from 3 to 10 mg O₃/L and contact times of 10 and 20 min in batch studies were found to increase the biodegradability (BOD₅/TOC ratio) of the RO brine by 1.8-3.5 times. At the same time, total organic carbon (TOC) removal was in the range of 5.3-24.5%. The lab-scale ozone-biological activated carbon (BAC) at an ozone dosage of 6.0 mg O₃/L with 20-min contact time was able to achieve 3 times higher TOC removal compared to using BAC alone. Further processing with Capacitive Deionization (CDI) process was able to generate a product water with better water quality than the RO feed water, i.e., with more than 80% ions removal and a lower TOC concentration. The ozone-BAC pretreatment has the potential of reducing fouling in the CDI process.     

川东天然卤水资源开发及综合利用工艺研究方向及重点

论述了四川盆地东部天然卤水资源状况,开发工艺现状,资源开发及综合利用的经济、社会意义,资源开发及综合利用工艺研究的方向及重点等,旨在促进川东天然卤水开发及综合利用的工艺发展与产业提升。     

絮凝吸附法脱除盐湖卤水中的有色物质

文章研究了盐湖卤水中有色物质的基本性质及其脱除方法。调节盐湖卤水的pH值使部分有色物质生成细小颗粒 ,加入适量高分子絮凝剂使细小颗粒迅速沉降 ,分离固体后 ,向所得液体中加入多孔吸附剂脱除全部有色物质     

Minimizing chemical interference errors for the determination of lithium in brines by flame atomic absorption spectroscopy analysis

Chemical interferences （ionization and oxide/hydroxide formation） on the atomic absorbance signal of lithium in FAAS analysis of brine samples are elaborated in this article. It is suggested that inadequate or overaddition of deionization buffers can lead to loss of sensitivities under particular operating conditions. In the analysis of brine samples, signal enhancing and oxide/hydroxide formation inducing signal reduction resulting from overaddition of deionization buffers can be seen with varying amounts of chemical buffers. Based on experimental results, the authors have arrived at the optimized operating conditions for the detection of lithium, under which both ionization and stable compound formation can be suppressed. This is a simplified and quick method with adequate accuracy and precision for the determination of lithium in routine brine samples from chemical plants or R＆D laboratories, which contain comparable amounts of lithium with some other components.     

离子膜法电解工段工艺改进

介绍了离子膜工段改造氯气总管逆水封连接管线、改进高纯盐酸泵工艺管线、改进淡盐水pH检测回路及增加二次盐水水流喷射真空泵冲洗水管线等多项工艺改进过程.流程优化后,生产系统平稳连续运行.