| 摘要 |
PURPOSE:To enable the use of a chemical device for multiple purposes by providing a double tube to the top of a cylinder body along the external periphery of the inside wall and providing also a penetrating passage communicating with a receiving part above an internal tube of said double tube and a recovering passage communicating with the outside of the cylinder body. CONSTITUTION:The vapor generated by heating is condensed at the semispherical inside wall surface 2a of a cover body 2 by being cooled to some degree by air-cooling to form liquid drops which are led along the internal wall surface 2a into an internal tube 7 of the double tube 6, from the receiving part 8 above the double tube 6 through a penetrating passage 7a, or, the vapor is cooled directly in the internal tube 7 of the double tube 6. As the result, condensible matters are trapped in the inside wall 7 by the condensation and uncondensed volatile matters alone are selectively recovered from a recovering passage 10. For the effective recovery, the receiving part 8 is preferred to be formed with an inclination to the penetrating passage 7a. |
