石化企业硫化氢泄露的水喷淋控制研究

在实验室内模拟了石化企业中可能出现的硫化氢(H2S)泄露,考察了不同情况对水喷淋控制性能的影响。模拟H2S泄露点的释放浓度为1 000 mg·m-3,释放速率为4 L·min-1;碳酸钠(Na2CO3)作为添加剂主要用于提高液滴对H2S的吸收能力。实验结果表明,适当浓度的Na2CO3溶液(1 g·L-1)可以得到较好的控制效果,当Na2CO3过量时,控制效果并不会提高太多,强碱性溶液反而还会对土壤造成破坏;提高喷淋量可以显著的提高控制效果;对于低位泄露点,控制效果随高度的增加而减弱;多喷头的布局不仅可以提高控制效果,还可以节约用水。

Study of water spray application for controlling releases of hydrogen sulfide in oil refinery

Laboratory studies are carried out to imitate the releases of hydrogen sulfide (H2S) from petrochemical enterprises, and assess of the ability of water spray under different conditions. The leaking point of H2S was generated with the concentration of 1000 mg.m-3 and release rate of 4 L.min-1; sodium carbonate (Na2CO3) was considered as the alkali additive to promote the absorption of H2S in water. The results illustrated that appropriate Na2CO3 concentration was conducive to the mitigation of H2S releases, while an excess of Na2CO3 was not only helpful for improving the mitigation capacity but also give rise to soil degradation because of the super-saline water; increasing spraying rate was the most effective means to improve the mitigation capacity; as for a leaking point located in the low position, the mitigation capacity was decreased with the increase of height; the use of multi-nozzle configuration could improve the mitigation capacity on the one side, and save the water consumption on the other hand.