SCHWENZOW, UWE,ROLLE, ULRICH,ASSING, HUBERT,TACKE, LUDGER,SCHMIED, ANDREAS
申请号：
CA3030984
公开号：
CA3030984A1
申请日:
2017.06.14
申请国别(地区):
CA
年份:
2017
代理人:
摘要：
The invention relates to a method for heating a concentrate (K) in an installation for spray drying (100) according to the preamble of claim 1 and to an installation (100) for performing the method according to the preamble of claim 8. The aim of the invention is for the method and for the installation for performing said method to avoid the tendency toward denaturing of the concentrate and toward deposits of the concentrate in the case of an economical increase in the throughput of the drying tower, while ensuring a microbiologically perfect final product. This aim is achieved by means of a method which, among other things, is characterized by the sequence of the following steps (a) and (b1): (a) additional high-pressure heating (H2) of the concentrate (K) at the high-pressure level (p2) to an elevated spraying temperature (T3), which lies in the range of 75 to 80 °C, by means of a high-pressure heat exchanger (16), to which a heat-transfer medium (W) is applied on the secondary side and which is designed as a shell-and-tube heat exchanger having a plurality of inner tubes, through which the concentrate (K) flows in parallel and which are arranged in the shape of a circular ring and on a single circle and which together form an inner channel, (b) defined shear loading (S) of the concentrate (K) in the course of or immediately after the treatment according to step (a) with means that consists in a channel having the shape of an annular space, which channel adjoins the inner channel in the flow direction and has a defined extension length and a defined length-dependent progression of the channel passage cross-sections of said channel.
