活性炭高压吸附氡气技术研究

加压是提高活性炭吸氡效率的有效途径之一，但加压又伴随着不利于氡吸附的温湿度变化。为此设计并构建了消除这些不利变化的活性炭高压吸附装置，模拟了5种活性炭吸附环境，研究了动态吸附系数与压力、温度、湿度的关系。实验结果表明，增加系统压力并降低相对湿度和吸附温度，活性炭吸附氡气的动态吸附系数得到成倍的提高，高压低温低湿状态（0.6 MPa，0 ℃，20%~24%）的动态吸附系数是常压常温常湿状态（0.1 MPa，28 ℃，54%~65%）的5倍。此研究为今后开展加压吸氡技术相关影响因素的系统研究和高效除氡装置的研制打下了基础。

Research on High Pressure Adsorption of Radon on Activated Carbon

Pressurization is proved to be an efficient way for raising the adsorption of radon on activated carbon, but the temperature and humidity variations accompanying pressurization are bad for radon adsorption. Thus, the high-pressure activated carbon adsorption system was designed and constructed to adsorb radon with controlling of temperature and humidity, five situations of environments were simulated for carbon adsorption, and the dynamic adsorption coefficient of radon was determined. By increasing the system pressure, reducing the relative humidity and temperature of adsorption, the dynamic adsorption coefficient of radon is improved exponentially. The dynamic adsorption coefficient under high-pressure, low temperature and low humidity state (0.6 MPa, 0 ℃, 20%-24%) is 5 times of that under normal pressure and temperature and humidity state (0.1 MPa, 28 ℃, 54%-65%). This research lays the foundation for future systematic research of pressurized radon adsorption relevant factors and development of efficient radon reduction facility.