초록 ▼

The present invention relates to a method of cleaning a container having an amount of liquefied petroleum gas contained therein. The container is first inspected thoroughly for leaks. Heated nitrogen gas is then fed into the container. The heated nitrogen gas may be transported from a nitrogen stora

The present invention relates to a method of cleaning a container having an amount of liquefied petroleum gas contained therein. The container is first inspected thoroughly for leaks. Heated nitrogen gas is then fed into the container. The heated nitrogen gas may be transported from a nitrogen storage tank to the container via at least one pipe. Liquid nitrogen may be fed into a vaporizer for vaporizing the liquid nitrogen. The nitrogen gas may then be heated via a steamer to expand the nitrogen gas and ensure that no liquid nitrogen enters the container. The heated nitrogen gas may vaporize any liquid liquefied petroleum gas contained therein. Further, the heated nitrogen gas may transport the liquefied petroleum gas to a flare for incineration. The heated nitrogen gas may be added any number of times to reduce the concentration of the liquefied petroleum gas therein to a desired level. The container may then be steam cleaned and opened to enter and thoroughly clean or inspect the inside of the container.

대표청구항 ▼

The present invention relates to a method of cleaning a container having an amount of liquefied petroleum gas contained therein. The container is first inspected thoroughly for leaks. Heated nitrogen gas is then fed into the container. The heated nitrogen gas may be transported from a nitrogen stora

The present invention relates to a method of cleaning a container having an amount of liquefied petroleum gas contained therein. The container is first inspected thoroughly for leaks. Heated nitrogen gas is then fed into the container. The heated nitrogen gas may be transported from a nitrogen storage tank to the container via at least one pipe. Liquid nitrogen may be fed into a vaporizer for vaporizing the liquid nitrogen. The nitrogen gas may then be heated via a steamer to expand the nitrogen gas and ensure that no liquid nitrogen enters the container. The heated nitrogen gas may vaporize any liquid liquefied petroleum gas contained therein. Further, the heated nitrogen gas may transport the liquefied petroleum gas to a flare for incineration. The heated nitrogen gas may be added any number of times to reduce the concentration of the liquefied petroleum gas therein to a desired level. The container may then be steam cleaned and opened to enter and thoroughly clean or inspect the inside of the container. n chuck or said treatment agent nozzles; a moving system for moving said spin chuck and said treatment agent nozzles relatively to one another; a control section for synchronously driving said treatment agent supplying system, said moving system, and said spin chuck; a standby position provided adjacently to said spin chuck; a pressure sensor provided on the surface opposing said treatment agent nozzles in said standby position, and detecting the discharge pressure of each treatment agent nozzle; and a monitoring device for monitoring the operational condition of each of said treatment agent nozzles based on the detected discharge pressure. 5. The coating apparatus as set forth in claim 4, further comprising: a solvent nozzle provided adjacently to and upstream of said treatment nozzles in a moving direction of the substrate to be treated; a solvent supplying system for supplying solvent to said solvent nozzle; and a control section for driving said moving system. 6. The coating apparatus as set forth in claim 4, wherein an interval between adjacently supplied treatment agent is such that the adjacently supplied treatment agent is integrated on the surface of said substrate to be treated by said thin film making means.