| 摘要 |
PURPOSE:To efficiently remove the combustible oil and fat and combustible gas in a large-diameter and long sized fat and oil pipeline with both ends opened by passing a mixture of an incombustible gas and a cleaning soln. through the pipeline from one end to the other end. CONSTITUTION:Gaseous nitrogen with requisite velocity and flow rate is supplied to an injection head 3 in direction of the arrow A, hence the pressure of the end side in the head 3 is made negative, a cleaning soln. is sucked into the head from a cleaning soln. supply nozzle 7, and the mixture with gaseous nitrogen is supplied into a pipeline 1. The combustible fat and oil deposited on the inner surface of the pipeline 1 are emulsified by the cleaning soln., released, and discharged to the outside from an opening at the other end of the pipeline 1. The combustible gas vaporized in the pipeline 1 is also extruded to the outside by the pressure of the gaseous nitrogen. |
