论文部分内容阅读
含有一定有机硫的催化汽油经过加氢处理后,少量以硫化氢形态的硫存在于循环氢气中,如果不及时处理,硫化氢在循环氢中不断积累,浓度不断提高,就会影响脱硫反应,进而影响产品质量。为了达到较高的加氢脱硫率,建议将循环氢中O_2浓度控制在5ppm以下,将循环氢中CO+CO_2浓度控制在20ppm以下。
A certain amount of organic sulfur-containing catalytic gasoline after hydrotreating, a small amount of sulfur in the form of hydrogen sulfide exists in the circulating hydrogen, if not treated in time, hydrogen sulfide in the continuous accumulation of hydrogen, the concentration continues to increase, it will affect the desulfurization reaction, Thus affecting product quality. In order to achieve a higher hydrodesulfurization rate, it is recommended that the concentration of O 2 in the recycled hydrogen should be controlled below 5 ppm, and the concentration of CO + CO 2 in the recycled hydrogen below 20 ppm.