.[J] Chemcial Industry and Engineering, 1987,V4(1): 69-72
[1]
Ludwing E.E., ��Applied Process Design for Chemical and Petrochemical plants�� Vol. 1, ch, 7, Gulf Publishing CO., Second Edition, PP. 276-8, fig.7-l7 thru7-20��
[2]
ASME Code-Section �� Para UG-127(6) .(Unfired Pressure Vessels code).