| abstract |
The fluid material e.g. sludge is processed, homogenized and heated to a temperature of 30-60 degrees Celsius. The heated fluid flows under a pressure of 2-4 Bar, 1 and by introducing steam at a temperature of 130 - 151 degrees Celsius and a pressure of 1-3 Bar, its temperature is increased for 1-2 seconds to about 130-150 degrees Celsius, whereupon grain formation is observed within the sludge. The fluid material then flows under its pressure and elevated temperature for 60-300 seconds. Subsequently, the fluid material undergoes adiabatic expansion to reduce its pressure to about 0.01-0.02 Bar within 1-2 seconds. The expanded fluid material is then separated into water, fat, water and solid admixtures and into a slurry. Characteristic of the installation is that it includes means for heating the fluid material, as well as a conduit (18) for transporting the preheated material, which is connected to the heating unit. The steam pipe (20) flows into this unit. The duct (19), which includes an expansion valve (6), exits the heating unit (5). The end pipe (22) is connected to the expansion valve (6) in the separating vessel (7). The system has a device for separating the liquid material coming out of the separating vessel (7), into liquid water, liquid fat and solid phase. ω |