To safely and smoothly perform cleaning operation and the like of a gasoline tank 1.
A residual liquid (a) is taken out from the gasoline tank 1, each piping from the tank 1 is closed and broken off with the tank and the tank 1 is hermetically sealed, then an inert gas b is filled into the tank 1 to avoid explosion by vapor c. Subsequently, water is supplied and filled into the tank 1 and drained, this watering-draining are repeated to remove the bottom oil and the residue in the tank 1. Then, the tank 1 is washed inside by jetting water from a nozzle 41, the vapor c is drawn from the washed tank 1, mixed and adsorbed in a circulating adsorptive liquid d, so that the remaining vapor c in the tank 1 is removed, wherein the mixing of the vapor c and the adsorptive liquid d is performed by a line mixer 32. This line mixer 32 has a plurality of inlets for the vapor c, mixing the vapor with the adsorptive liquid and making the mixing and adsorption performed smoothly.
| JPS5488667A | 1979-07-13 | |||
| JPH11138119A | 1999-05-25 |
Higashio Masahiro
Takayoshi Tagawa