伴生气处理装置精馏塔优化改造技术

某公司伴生气处理装置以石油伴生气为原料.随着石油资源日渐枯竭,伴生气产量不断下降,C3及以上组分含量也持续减少,使得进入该装置精馏塔塔盘气液两相的量减少,液相量相对气相量的比例也减小,已经远远偏离精馏塔设计负荷,导致精馏塔分离效率和产品收率下降.针对这种状况,通过对装置能耗及塔盘数据进行水力学模拟计算,重新核算塔盘开孔...

OPTIMIZATION AND REVAMP TECHNOLOGY OF RECTIFYING TOWER OF ASSOCIATED GAS TREATMENT UNIT

A company uses petroleum associated gas as raw materialin its associated gas treatment plant.With the gradual depletion of petroleum resources,the production of associated gas has been decliningand the content of C3 and higher fractions has been decreasing as well.This resulted in the reduction of the amount of gas-liquid phase entering the column tray,and the decrease of the ratio of liquid phase to gas phase.The rectifying tower load has deviated far from the design value,which led to the decreasein separation efficiencyand product yield of the rectifying tower.In view of this situation and through the hydraulic simulation calculation of the energy consumption and tray data of the unit,the opening rate was recalculated;the adaptive optimization of the rectifying tower was carried out and over 60%of the floating valve on the tray was blocked;a baffle was added to reduce the amount of liquid phase entering the blind zone,ensuring the mass transfer effect between the gas and liquid phases.After the revamp,the mass transfer performance of the tray in the rectifying towerwas upgraded greatly,the product quality was improved andthe energy consumption per unit product was reduced.