1[6]Kopp G. Why and how to dry gas pipelines[J]. Pipeline Industry,1981(10):35～41.
2[7]LaCasse G A, Ingvordsen T. Desiccant drying of gas pipelines[J]. Environment Treatment & Control, 1988(9):48～51.
3[8]Ahmed S Y. Pipeline drying using dehumidified air with low dewpoint temperature[J]. Applied Thermal Eng, 1998,18(5):231 ～244.
4[9]Falck C. Precommissioning and commissioning Europipe:An environmental challenge[J]. Pipe Lion & Gas Industry and Pipe & Pipeline International, May, 1996.
5[10]Yanagida K. How the vacuum process dried a large diameter gas line[J]. Pipeline Industry, 1988(9):26～30.
6[11]Maribu J, Falck C.The Zeepipe experence: Pigging 814km of subsea gas pipeline in the North Sea[J]. Pipe and Pipelines International, July-August 1994.
