Maintenance Friendly And Pulsation Free Operation Food Waste Pumps
In focus: Brewery & recovery of waste food in the production of
biogas
A prestigious brewery, who produce fine quality real ales have
installed an anaerobic digestion facility for producing biogas to
be inputted into the national gas grid.Built with Accuvon lobe
pumps, the anaerobic digestion facility is fed with kerbside
collected food waste, food processing waste, supermarket food waste
and brewery waste.
The organic matter is entered into a feed inlet at the start of the
process where a rotor chopper breaks down the raw material. Accuvon
lobe pumps move the chopped slurry from holding tanks and through a
heat exchanger to raise the temperature prior to entering the main
AD facility.
As the hot organic material enters the main AD facility it is dosed
reliably and accurately by a Accuvon lobe pump with an inorganic pH
buffer to accelerate and maximize the breakdown of the material.
The large mass of organic material is ‘churned’ by Accuvon lobe
pumps in a plant room connected through a series of pipes to
maximize the surface area and further accelerate the AD process and
obtain the greatest yield of heat and biogas. The heat is recycled
back into the heat exchanger.
Application Data:
| Pump type | Accuvon AC50 - AX250 |
| Pumped medium | Food Waste |
| Temperature | 60°C |
| Rated capacity | 100 m³/h |
| Speed | 190 rpm |
| pH-value | neutral |
| Entrance pressure | / |
| Working pressure | 2 - 8 bar |
Technical Data:
| Casing | Grey cast iron |
| Radial casing liners | Hart metal |
| Casing protection plate | Hart metal |
| Mechanical seal | SIC / SIC |
| O-Rings | FKM or NBR |
| Shaft seals | FKM or NBR |
| Rotors | dual-lobe, linear, Premium profile, steel |
| Drive | Helical gear motor |
Advantages of this Accuvon rotory lobe pumps
| 1 | - Free ball channel Ø 75 mm |
| 2 | - Low-wear biogas rotor with Premium profile |
| 3 | - Electronic protection from running dry |
| 4 | - Pumping of abrasive Media |
| 5 | - Resistant to pressure |
| 6 | - Self-priming |
| 7 | - Ease of maintenance (Maintenance in Place) |
operating principle
• Self-priming, valveless, positive displacement pump
• Designed with two shafts with parallel axes
• The shafts move relatively to one another thanks to external
timing gear
• The displacers (=rotors) roll off each other with minimum axial
and radial clearance
• In every position, the rotors and casing close the suction
chamber against the pressure chamber
• Gentle, low-pulsation pumping
• For viscous, solid, abrasive or shear-sensitive media
Accuvon's range of rotors –the Premium rotor
Premium profile– of biogas rotors
• Large sealing area
• Effective wiper edge
• Pressure-resistant
• Made of steel, stainless steel or plastic
axial and radial casing protection
To protect the pump casing from abrasive media and solids, we
developed replaceable casing protection plates and liners several
years ago.
The casing protection is replaced in a few steps, based on the MIP
principle.
Easy maintenance– Maintenance in Place
• Reduced maintenance times and downtimes
• Maintenance at installation site by customer's in-house staff
