大型液硫脱气装置改造

以普光天然气净化厂联合装置液硫池MAG~?脱气技术为基础,创新开发出MAG~?+液硫鼓泡脱气技术。应用此项技术后,液硫中的硫化氢质量分数脱除至15×10^(-6)以下,符合GB/T2449.2-2015《工业硫磺第2部分:液体产品》中一级品的标准,可为类似工艺技术在天然气净化厂的应用提供参考。

元谋地震台气氡脱气装置改造及效果分析

元谋地震台水化观测站气氡脱气装置由于脱气效果较差,排水口堵塞及输气管堵塞等干扰,严重影响气氡观测质量,在2016年由溅落式脱气装置改造为自吸气鼓泡式脱气装置,经过2017年一整年的气氡连续观测,发现自吸气鼓泡式脱气装置存在由于水质较差,排水口堵塞问题,需要每周清洗一次脱气装置,因此重新改造为溅落式脱气装置。改造后,通过一整年的观测数据分析,较脱气装置改造前相比,气氡值明显升高,气氡观测稳定性明显提升,观测数据不受脱气装置影响。

Numerical simulation on the fluidized bed gasification and CaO dechlorination of refuse derived fuel

A three-dimensional numerical model verified by previous experimental data is developed to simulate the fluidized bed gasification of refuse derived fuel （RDF）. The CaO dechlorination model obtained by the thermal gravity analysis （TGA） is coupled to investigate the process of CaO dechlorination. An Eulerian-Eulerian method is adopted to simulate the gas-solid flow and self-developed chemical reaction modules are used to simulate chemical reactions. Flow patterns, gasification results and dechlorination efficiency are obtained by numerical simulation. Meanwhile, simulations are performed to evaluate the effects of Ca/Cl molar ratio and temperature on dechlorination efficiency. The simulation results show that the presence of bubbles in the gasifier lowers the CaO dechlorination efficiency. Increasing the Ca/Cl molar ratio can enhance the dechlorination efficiency. However, with the temperature increasing, the dechlorination efficiency increases initially and then decreases. The optimal Ca/Cl molar ratio is in the range of 3. 0 to 3. 5 and the optimal temperature is 923K.

地下流体气汞观测的储气装置

针对地下流体汞观测仪的主动采样、脱气方式,设计了满足主动脱气条件的储气装置。以储气装置气囊内气压稳定性为指标,开展储气装置匹配ATG-6138M型痕量汞在线分析仪和自然吸气鼓泡脱气装置的气汞观测实验。结果表明,储气装置能保证被测气体及时置换,维持整套气汞观测系统动态稳定,具有较好的兼容性。