Processing Various Substrates into Biogas:

NEMO® Progressing Cavity Pumps Process Everything from Liquid Manure to Waste

The space-saving NEMO® progressing cavity pumps convey a wide variety of substrates during the production of biogas without major maintenance work or breakdowns.

In addition, the pumps are distinguished by their long service life.

Look behind the scenes

This example follows Agrivalor Énergie in Alsace, which feeds its cogeneration plant with biogas from leftover food production and food that has passed its sell-by-date. Mixtures from maize silage, liquid manure, and grape marc, but also food waste from restaurants, schools and supermarkets are conveyed into a mixing tank from where they travel on to the fermenter, where the biogas is formed.  

Challenge accepted

However, the varying mixtures of materials put a major strain on the plant’s conveying systems. Some of the materials, such as the liquid manure, are corrosive and some are fibrous and likely to cause obstructions, such as grain waste. Materials of animal origin also have to be exposed to intense heat to prevent disease, so some media are still at 70 or 80°C when they are conveyed.  

Excellently solved

Agrivalor Énergie ordered ten NETZSCH-made NEMO® progressing cavity pumps to achieve maximum possible reliability without significant maintenance or downtimes, despite the tough conditions. Two of the larger pumps with capacities of around 40 m³/h are used to transport the mixture from the collecting tank (with around six to seven percent dry matter content) into the fermenter. Other NEMO® pumps with a capacity of 20 m³/h are used to convey the recirculated substance and introduce the sanitised hot liquid manure into the mixer. All the units are extremely compact and have a block design with flange-mounted motor, saving a lot of space on the premises of the privately owned biogas plant. The efficient pump design only requires minimal power, which – along with the long service life and long maintenance intervals – leads to low overall operating costs.

NEMO® progressing cavity pump

  • Medium: maize silage, liquid manure, grape marc, food waste, fats and dairy products
  • Temperature: 70 up to 80 °C
  • Conveying capacity: 20 up to 40 m³/h

You may also be interested in:

NEMO®B.Max 混合泵

NEMO®B.Max 具有最大生物介质混合与输送能力并以此设立新标准。

NEMO® SY 轴承直联自由轴伸设计用于工业领域

NEMO® SY 单螺杆泵在全球各个领域均能满足高标准应用。其轴承直联自由轴伸设计可使该泵在各种类型驱动装置下运行,如伺服电机、柴油发动机或液压驱动。

TORNADO® T2 Industrial Rotary Lobe Pumps

The TORNADO® T2 rotary lobe pump is a positive displacement pump. The pumping action is generated by the contra-rotation of two rotors within the pump chamber which are synchronised externally. The media enters the pump chamber through the inlet port and is carried around the chamber by the rotors to the outlet port where it is discharged.

耐驰M-Ovas®切碎机

耐驰M-Ovas®切碎机可在任何液体中的固体物料发生断裂的情况下使用,以防止管道堵塞或损毁下游设备。