PROBLEM TO BE SOLVED: To reduce the tendency of a concentrate to denature and the tendency to deposit a concentrate while securing a microbiologically perfect final product in the case of increasing the economic output of a drying tower. The invention relates to a method of heating a concentrate (K) in a spray-drying installation (100) according to the preamble of claim 1 and an installation for carrying out the method according to the preamble of claim 8. (100). The object of the present invention is to avoid the tendency of the concentrate to denature and the tendency to deposit it, while ensuring a microbiologically perfect end product, in the case of increasing the economic output of the drying tower. This is because of the equipment that implements the method. This object is achieved in particular by means of the method characterized by the following successive steps (a) and (b). (A) by means of the high-pressure heat exchanger (16) additionally high-pressure heating (in the range of 75-80 ° C.) of the concentrate (K) at high pressure level (p2) to an increased spraying temperature (T3) H2) the high pressure heat exchanger (16) is designed as a shell-and-tube heat exchanger provided with a plurality of inner tubes, to which a heat transfer medium (W) is applied on the secondary side The plurality of inner tubes are arranged such that the concentrate (K) flows in parallel inside thereof and is disposed in the shape of a circular ring on the single circle, and together form an inner channel. (B) by means of an annular space-shaped channel which is adjacent to the internal channel in the flow direction and which has the defined extension length of said channel and its continuous channel passage cross section depending on the predetermined length Applying a predetermined shear load (S) to the concentrate (K) during or immediately after the treatment by step (a). [Selected figure] Figure 3【課題】乾燥塔の経済的な生産高を増加させるケースにおいて、微生物学的に完璧な最終製品を確保しつつ、濃縮物が変性する傾向および濃縮物が堆積する傾向を低減させる
