导向立体传质塔板在低温甲醇洗装置中开发应用

根据合成氨变换气脱硫塔扩产50%的要求,开发出一种导向立体传质塔板(CTST-8)。对导向立体传质塔板的流体力学性能研究表明,新塔板具有板压降低、气液二相通量大、抗堵塞、能消泡等技术特点。对扩产50%的低温甲醇洗脱硫塔内的水力学参数进行了核算,结果表明,扩产后的操作参数均处于导向立体传质塔板正常操作范围之内。将导向立体传质塔板应用于山西天脊集团变换气脱硫塔的扩产改造,达到了扩产50%的要求,取得了良好的效果。塔顶出口气相中φ(H2S)≤2×10-6,φ(CH3OH)≤3×10-4,全塔阻力小于0.08 MPa。

Development and application of combined trapezoid spray tray in the Rectisol purification system

A new type of the combined trapezoid spray tray(CTST-8) was developed for desulphurization in Rectisol purification system.Some hydrodynamics of the new tray were concerned.The results show that the new tray has some advantages such as lower pressure drop,higher flux,anti-blocking and better anti-foaming,etc.Hydraulics parameters of the desulfurization column expanded by 50% were simulated.It shows that all the operation parameters after expansion are within the limit of normal operation of CTST-8.When the new tray was used in the desulfurization column of Rectisol purification system in Shanxi Tianji Coal Chemical Industrial Co.Ltd,the aim of enlarging the production scale(expanded by 50%) was achieved.In the overhead gas phase,φ(H2S) is≤2×10-6,φ(CH3OH) is≤3×10-4,and the pressure drop of total column is less than 0.08 MPa.