The diagram (below) shows how the sludge is heated to its pasteurisation temperature (normally 70°C) using two DTI Series heat exchangers. The holding section consists of three tanks, with each tank holding the amount of product to be processed within the holding period (normally one hour). The three tanks make it possible to constantly send and extract product from the holding section and recover energy between the hot pasteurised sludge and the cold incoming sludge. Energy savings of up to 70% can be obtained compared to systems without heat recovery sections.
For different pasteurisation criteria, HRS can provide solutions with different numbers of holding tanks (up to three) or holding tubes (which require less management time) for pasteurisation systems with higher temperatures.
For fouling fluids, we can combine the DTI Series with our scraped surface heat exchangers offering a solution that reduces the amount of downtime needed for cleaning.
HRS Continuous 3-Tank Pasteurisation System
© 2017 HRS Heat Exchangers. All Rights Reserved