【摘要】 采用三维数值模拟方法对德士古气化炉激冷室内合成气穿越液池过程的流动特性以及合成气带水等关键问题进行了研究,探讨了两管(上升管和下降管)间隙、气流速度以及液膜流速对带液量的影响。模拟结果表明:在进水流量保持一定的条件下,气流的带液量随着两管间隙的增加而减少,随着气流速度的增大而增大,并分别获得了带液量与两管间隙、带液量与气流速度的关系曲线;在两管间隙和气流速度一定的条件下,液膜流速对气流的带液量也存在影响,随着液膜流速的增大带液量先减少后增加。更多还原

【Abstract】 The entrainment properties of mixed gas passing through a cistern in quench chamber of Texaco gasifier were investigated by a three-dimensional numerical simulation.The effects of the space between the ascending and descending pipes,gas velocity and liquid film velocity on the entraining water flux were discussed.Numerical results indicate that the entraining water flux decreases with the increase of the space between two pipes,and increases with the increase of gas velocity when the water inlet flux keeps constant.The relation between the level height and parameters are also obtained.The liquid film velocity has obvious effect on the entraining water flux as the space between the two pipes and gas velocity remains constant.It is found that the entraining water flux decreases at first,reaches a minimum,and then increases with the increase of the liquid film velocity.更多还原