Uht system and method for heat treating temperature-sensitive food products

A method for heat treating temperature-sensitive food products in a UHT system (1) according to claim 1, with a pre-heating (VE) and a subsequent high-heating (HE) of the food product (P) to be heated, with a regeneratively generated first heating medium (M1) for the pre-heating (VE), conducted through the UHT system (1) in a first circuit (KL1), and a second heating medium (M2) for high-heating (HE), conducted in a second circuit (KL2), comprising the steps of:

• an entrance temperature of the food product (P) is adjusted to the requirements of the high-heating (HE) before the entry into the high-heating (HE) by additional heating of the first heating medium (M1) by means of a third heating medium (M3),
• that the additional heating of the first heating medium (M1) takes place before its entry into the pre-heating (VE),
• that in the area of its additional heating and its subsequent utilisation in the pre-heating (VE), the first heating medium (M1) is conveyed with a volume flow (Q) which is increased with respect to the first volume flow (Q1) of the first heating medium (M1) present in the entire first circuit (KL1) of the UHT system (1),
• and that all partial amounts of the food product (P) branching and uniting in the pre-heating (VE) and subsequent high-heating (HE) experience the same dwell time at least in the pre-heating (VE).