摘要
根据TCAP氢同位素分离原理及系统小型化要求,设计了一套小型氢同位素分离装置。采用分离柱外室中螺旋型电阻加热器对Pd/K分离柱进行加热,利用低温恒温槽中的低温无水乙醇在外室中循环冷却分离柱。采用西门子PLC模块,根据程序设定对TCAP分离过程进行自动控制。在参数优化的条件下,研究了全回流及生产模式下的分离效率。研究发现,设计的小型氢同位素分离系统实现了稳定的分离柱加热-冷却循环,循环时间为0.25h。在生产模式下,由氘纯度为80%的原料气可分离出氘纯度99.5%产品气,生产效率可达8.7mL/h。低氘含量H-D混合气(D%=20%)同样能实现明显的氘浓缩效果(产品气D含量达99.0%)。
Based on the TCAP hydrogen isotope separation principle,a new glove-box-size protium-deuterium separation device was designed.The separation column contained Pd/K composite is heated by helixal resistance heater,and is cooled by-50 ℃ ethanol cycled by a low-temperature thermostat.A SIEMENS PLC module is used to control the separation process according to the loaded program.With the optimized parameters,the separation efficiency was examined under the production conditions.The experimental results showed that 0.25 hour was needed for a single heating-cooling cycle,and the repeatability was good.Under the production conditions,the production efficiency was 8.7 mL/h,and 99.5% deuterium was obtained from the 80%（D purity） H-D mixture.A good D enrichment effect（D purity in product reached 99.0%） was also observed when a low D content H-D feed（D%=20%）was used.
出处
《同位素》
CAS
2012年第1期37-41,共5页
Journal of Isotopes
关键词
氢同位素
分离
热循环吸附方法
系统设计
分离性能
hydrogen isotope
separation
thermal cycling absorption process
device design
separation efficiency
