| 摘要 |
<p>In the process for a heat treatment prolonging the shelf life, in particular ultra-high heating, of products containing germs, a product stream is heated and subsequently cooled to treatment end temperature on a flow path covered over its entire length at an at least approximately constant flow rate, in indirect heat exchange with a heat transfer medium flowing in countercurrent in exchange zones, with the recovery of heat. At the beginning of a high-temperature zone which includes the treatment end temperature, the product stream is divided into parallel part streams of equal quantities, and in their separate part-flow paths, the part streams are exposed to treatment conditions of which are identical to each other. At the end of the high-temperature zone, the part streams are recombined to form one comprehensive stream.</p> |
