Industrial Utility Efficiency    

BOGE BLUEprotect Protection From Pests in Grain Storage

BOGE has introduced BLUEprotect, a simple and effective method to provide better protection from pests for grain stored in silos.

The number of starving people in the world is increasing, but at the same time large amounts of grains are going to waste on the way to the consumer, BOGE reports. It is in the poorer regions of the world in particular that the greatest losses arise shortly after harvesting. 

BOGE BLUEprotect

BOGE BLUEprotect is based on the principle that pests that threaten grain stored in silos cannot survive without oxygen.

According to BOGE, a large part of the grain stored worldwide falls victim to pests, such as granary weevils, parasitic fungi, mice and rats. With BLUEprotect, BOGE uses nitrogen from the ambient air. This removes the oxygen from the silo and therefore takes away the means of survival for pests and fungi. The method is carried out without chemical agents and is therefore harmless in food production and does not cause environmental damage.

BLUEprotect is based on this simple principle where BOGE feeds a mix of gases into the grain silos - consisting of almost pure nitrogen with a maximum of 1% residual oxygen. The nitrogen drives out the oxygen, thereby removing aerobes, and thus the means of survival for pests and fungi. At the same time, the effect of breathing losses is minimized, and the risk of smoldering fires is decreased.

For BLUEprotect, BOGE uses nitrogen from the ambient air. An air compressor produces compressed air close to the silo. It then reaches a membrane filter via a dryer and combined filter, which separates the nitrogen from the oxygen and feeds it into the silo. After use, the nitrogen is re-absorbed into the ambient air. This makes BLUEprotect an attractive method of pest control wherever the use of chemical agents is not permitted or desirable – for example, in ecological farming or in the supply chain for breweries. Malting plants, for instance, have to ensure no chemical residues are left behind in the barley; these could later find their way into the beer with the malt when brewing.

The processing is straightforward for the user. BOGE arranges all plant components in a container. As such, BLUEprotect can be placed flexibly, without special prior knowledge and in different types of silos. BOGE analyzes the starting position with the customer to record the initial nitrogen requirement. An essential precondition is a sufficiently airtight silo. For a test run, BOGE offers a rental container if required, with which the airtightness of the silo can be clearly ascertained after a few days. 

BOGE Container

BOGE places all components together in a container. As such, BLUEprotect can be deployed flexibly and in different types of silos.

About BOGE

As one of Germany’s oldest manufacturers of compressors and compressed air systems, BOGE KOMPRESSOREN Otto Boge GmbH & Co. KG offers more than 100 years’ experience. The company is also one of the market leaders. Whether for high speed turbo air compressors, screw air compressors, piston air compressors, scroll air compressors, complete systems or individual devices, BOGE meets the most diverse requirements and highest standards, with precision and quality always at the forefront. The family company, which operates internationally has a workforce of 850 employees, approximately 490 of whom work at the headquarters in Bielefeld, and is managed by Wolf D. Meier-Scheuven and Thorsten Meier. With its numerous sales offices and subsidiaries, BOGE offers its international customers comprehensive services and supplies its products and systems to more than 120 countries worldwide. For more information, visit