A Proposal of Conveying Lines DesignA Proposal of Conveying Lines Designfor Pneumatic Transportation of Pulverized Coal for Pneumatic Transportation of Pulverized Coal

of Longof Long--Distance and High VolumeDistance and High Volume

������

����

�

��

�

� –� –� –� -� –� –� –

22

2 2p a aa a a

horzc c

UUPDg Dg

� � �� �� � �

LL 22

(1 )( ) ( )2 2

p a aa a avertical p a

c c c c

UU g gP hDg Dg g g

� � �� � � � ��

� � � � � ���

� �

LL

�

�

�

�

�

–

–

–