| 摘要 |
<p>The invention relates to the process using a cooling medium which liquefies the condensable material in a heat exchanger, a device for carrying out the process, and the use of the process and of the device. Liquefied materials are introduced into a hollow product body, the cooling medium, which is in the vapour phase because of the heat exchange, leaving the heat exchanger being conducted completely or partially onto the outside surface of the hollow product body, as a result of which the material contained therein is kept in the liquid phase. <IMAGE></p> |
