The pressure drop per unit length of pneumatic dense phase transport for pulverized coal with a riser of 20 mm bore stainless steel tube was investigated, and its Zenz-type diagram was obtained.

• 研究了内径20mm的竖直上升不锈钢管道中粉煤密相气力输送单位管长压降随输送参数的变化规律,并得到了Zenz相图。