提溴技术研究进展与展望

近年来,我国含溴卤水资源中溴浓度日益降低,而主流的空气吹出提溴工艺存在能耗高和温度适用范围窄的缺陷,当含溴卤水浓度较低时,空气吹出法提溴经济性变差。因此以降低能耗、提高效率为目标,离子交换树脂吸附法、气态膜法、乳化液膜法、鼓气膜吸收法和超重力法等提溴方法得以广泛研究。在简要分析水蒸汽蒸馏法提溴和空气吹出法提溴技术特点的基础上,对离子交换树脂吸附法、气态膜法、液膜法、鼓气膜吸收法和超重力法等提溴技术的研究进展进行了综述,并讨论了上述各种提溴方法的优势和进一步的研究方向。

Progress in Bromine Extracting Technology

During the past few years,the concentration of bromine in bromine-bearing resource in China is dropping quickly.However,air blow-out technique,as the main extracting bromine technology in China,has the disadvantages of high energy consumption and narrow temperature range of application,and it is not profitable if the concentration of bromine in feed is becoming lower.Hence,aiming at developing an extracting bromine technology with lower energy consumption and wide range of application,some novel techniques,such as ion exchange resin adsorption,gas membrane process,emulsion liquid membrane,agitated bulb membrane absorption and high gravity air stripping technology,are presented.In this paper,based on a brief analysis of current bromine production process including steaming-out technique and air blow-out technique,the progress in some novel bromine extracting technologies mentioned above are reviewed.The advantages and further study directions of these technologies are discussed.