CAJ | 학술논문

为了应急处理液体推进剂N_2O_4泄漏液,采用CaO水解-正丁醇共沸蒸馏法制备出粒径均匀的多孔性纳米球型Ca(OH)_2粉体,粒径为200～300 nm,孔径8～15 nm,比表面积为63 m2/g.将粉体装入压力瓶中形成移动的装置,通过挤压使粉体喷射与泄漏物发生物理吸附和酸碱中和反应.结果表明,粉体对泄漏液N_2O_4挥发的NO_2气体去除率可达90%以上.粉体主要通过吸附、吸收、浸润、界面化学反应等作用捕获挥发气体,覆盖泄漏液,避免其进一步挥发和扩散.
위료응급처리액체추진제N_2O_4설루액,채용CaO수해-정정순공비증류법제비출립경균균적다공성납미구형Ca(OH)_2분체,립경위200～300 nm,공경8～15 nm,비표면적위63 m2/g.장분체장입압력병중형성이동적장치,통과제압사분체분사여설루물발생물리흡부화산감중화반응.결과표명,분체대설루액N_2O_4휘발적NO_2기체거제솔가체90%이상.분체주요통과흡부、흡수、침윤、계면화학반응등작용포획휘발기체,복개설루액,피면기진일보휘발화확산.
In order to dispose propellant N_2O_4 leaking liquid in an emergency, uniform porous nano-size spherical Ca(OH)_2 powder is prepared by CaO hydrolysis-azeotropic distillation method. The grain size of Ca(OH)_2 is 200-300 nm, the pore diameter is 8-15 nm and the specific surface area is 63 m~2/g. A movable leakage disposal device is formed by filling the prepared powder into a pressure bottle. Leakage can be controlled by spraying the powder of the device over the leakage under pressure. Experiment results show that the removal rate of NO_2 gas is up to 90%. Through adsorption, absorbtion, infiltration, interfacial chemical reactions, Ca(OH)_2 powder capture NO_2 gas and cover leaking liquid, preventing its evaporation and diffusion.