| 摘要 |
PURPOSE:To estimate oxidation life of a sample accurately and rapidly, by compulsorily deteriorating the whole sample of a liquid org. compd. circulated in a thin film. CONSTITUTION:A circulation pump 21 is actuated to draw a sample 13 from a storage tank 10 through a tube 18 and feed it to a sample introduction part 5. The sample 13 is fed to the upper part of the conical large-diameter part 2A of a funnel 2, flows down along the external peripheral surface of the part 2A, gradually formed into a thinner film, and propagated to the inner cylinder surface 1A of a glass cylinder 1 in a cylindrical thin film 6 having uniform thickness. At that time, the film 6 is deteriorated by heating the sample 13 to a temp. higher than that of it in the tank 10 with a heater 11, and further degraded by bringing it into contact with the atmospheric gas injected from an injection nozzle 8B, and rising with replacing all the gas contained in the cylinder 1. The sample 13 flows down moreover accelerated toward deterioration by contact with a catalyst 30. Oxidation life of the org. liq. compd., etc. can be thus estimated exactly and rapidly. |
