aspen三级吸收塔模拟求助? 在模拟三级吸收塔时,出现如下错误,请问怎么解决?谢谢。*** severe error a liquid feed/pumparound to the top stage is required when "q1=0" is specified in "col-specs"; required feed/pumparound has zero flow. * warning rest of block bypassed due to severe error. 查看更多