Abstract
Drainage of residue quantity from the piping system in chemical tanker during the process of air blowing is examined. The quantity of water remaining in horizontal pipe and pressure are measured under various conditions of initial pressure and volume of air tank, trim, and method to maintain back pressure for each test arrangement of piping of 4-inch and 6-inch bore. A back pressure is maintained by constant pressure valve set at 1 bar and pipe rise to a height of 10 meters at the end of horizontal pipe. It is suggested that the developed constant pressure valve have an equivalent function for practical usage to the 10 meters height pipe. It is also discussed the measures to operate efficiently the stripping system.
Simple model presented for determining the quantity of remaining water in horizontal pipe are compared with experimental data for test arrangement of constant pressure valve, and satisfactory agreements are obtained at higher quantity.
