A method of and an arrangement for continuous hydrolysis of organic material
in
the form of sludge with a dry solids content of 1-20%. A sludge containing the
organic material with a low content of abrasive components and a dry solids content
of 1-20% is heated to a temperature of approximately 100 C. The sludge is
mixed with steam at a pressure of 1-4 bars. The sludge/steam mixture is lead to
a preheating tank. The pressure of the sludge/steam mixture is increased from 3
to 10 bars. The sludge-steam mixture is lead to a reactor. A depressurizing tank
depressurizes the sludge/steam mixture to 1-4 bars. The sludge and steam are separated
and may be cooled.
