热解燃烧废TBP/OK料液配制

Compound of Feed for Pyrolysis and Combustion Spent TBP/Kerosene

采用热解燃烧法处理放射性废磷酸三丁脂 /煤油 (TBP/OK)溶剂时 ,为避免热解产生的磷酸腐蚀以及使其充分热解 ,需在TBP/OK溶剂中加入固磷剂和表面活性剂 ,并配成均匀、稳定料液。本工作研究配制TBP/OK乳状液和TBP主要降解产物磷酸二丁脂 (DBP)对乳状液配制的影响。利用放射性废TBP/OK溶剂进行了热解燃烧废TBP/OK料液配制的配方验证 ,并推荐了一种能够满足工业规模处理放射性废TBP/OK的料液配方。

Pyrolysis and combustion technology is an available method to treat spent organic solvent——intermediate-level radioactive TBP/kerosene. In the process TBP is decomposed into C 4H 8 and P 2O 5 that would corrode equipment and pipes. In order to convert P 2O 5 into calcium phosphate or pyrophosphate, and then separate them from the pyrolysis reactor, calcium hydroxide and emulsifier solutions are added to the TBP/ kerosene to form stable emulsion after intense mixing. The influences of the different parameters, such as emulsifier kind, emulsifier content, DBP content and temperature, etc., in the pure TBP/kerosene-DBP system on the emulsion is studied. The results show that the mixing do not emulsify if the content of DBP is more than 0.4%. The demonstration with the spent TBP/kerosene show that the emulsion is well-distributed. The emulsion is stable in 24 h and can be transported by pump.