ADVANTAGES OF THE INVENTION

The design has unique hydrodynamics

Delinking of the residence time of the feed hydrolysis duct from the residence time of the main reactor for efficient digestion of the low-density material without any phase separation.

Middle perforated truncated cones fixed to the wall of the cylindrical reactor and the top and bottom truncated cones are meant to create turbulence in the reactor disturbing the flow behaviour of the slurry, ensure proper mixing of the material inside the digester without any mechanical equipment.

The arrangement of truncated cones create unique hydrodynamics inside the reactor even with materials such as lignocellulosic biomass by preventing phase separation and biomass washout.

The perforated truncated cone above the bottom truncated cone ensures the movement of slurry towards upward flow regime through the perforations (20 mm) while the solid material is retained in the bottom part of the reactor.

The bottom truncated cone elongated through the central duct is provided to ensure the retainment of solids and divert the flow from bottom to towards the middle perforated truncated cone.  

The top truncated cone is provided for the easy movement of the thinner slurry towards the perforated plate. 

The conical bottom of the reactor is a place where maximum solids are retained and the mixing of solids in the cone is ensured through pressurized biogas purging.

The perforated plate ensures further retainment of solids and allows the liquid to flow towards up which is then withdrawn as the final digestate. 

Scaling up of digester to handle a wide range of waste quantities from smaller capacity to larger capacity. 

Intermittent mixing of digester slurry by using the autogenerated biogas pressure and slurry recirculation from bottom to top. 

De-alienation of scum formation issue, elimination of choking and clogging, short-circuit of feed in the digester which are common issues in conventional digesters.