BioGasclean has the optimal solution for your biogas plant

BioGasclean is specialized in biological desulfurisation of biogas. BioGasclean develops, manufactures and markets fully automated gas cleaning systems for H2S removal combining low operating costs with high availability. BioGasclean has a solid track record. By the end of 2016 BioGasclean has more than 200 plants in operation or under construction in 38 countries and supplies clean gas to more than 485 MW gas engines.

The H2S removal process is 100% biological and operating costs are 80-90% lower than chemical gas cleaning systems. The availability is above 98 %. The only residue from the process is a valuable fertilizer which is recycled.

The QSR® system makes it possible to clean the tank without emptying it for packing media. This will reduce downtime and increase revenues.

Biogas – renewable energy from organic waste streams

Biogas is a byproduct from anaerobic digestion of organic waste streams at livestock farms, food processing plants, breweries, palm oil mils, starch factories, ethanol distilleries, paper mills and other waste water treatment plants. Biogas is a renewable energy source and contains 50-70% methane (CH4), 30-50% carbon dioxide (CO2) and 0.1% to 3% (1,000 to 30,000 ppm) hydrogen sulfide (H2S). When the H2S is removed biogas can substitute oil and gas and be used for power and heat production or upgraded to natural gas quality.

Why it is necessary to reduce the H2S?

H2S will form sulfur dioxide (SO2) and sulfuric acid (H2SO4) during combustion which results in a very aggressive corrosion. The corrosion will literally reduce the lifetime of the downstream equipment by years! This is why gas engine manufacturers require that H2S in the clean gas must not exceed 100-250 ppm. Otherwise, the operating costs for change of engine oil, spark plugs and other maintenance will increase significantly. Furthermore, there will be high costs for repairs and income lost during overhauls and break downs. Air quality standards is another driver as combustion of un-cleaned biogas will result in acid rain from emissions of sulfur dioxide (SO2). Also health and safety standards may require H2S removal as H2S is toxic even in small concentrations.

BioGasclean supplies a full range of biological H2S removal systems

BioGasclean supplies different types of gas cleaners so it is possible to choose the best solution for your project. The gas cleaners can be designed to handle any flow and H2S content in the raw biogas. Typically the H2S is reduced to 100-250 ppm but BioGasclean can reduce to lower values if required.

 

Before Cleaning

After Cleaning

Common for all Biogasclean products

    • Safety; injection of air into biogas is only safe with a reliable control system. The PLC receives signals from an oxygen meter and will reduce or stop air injection in case the oxygen content in the clean gas gets too high. If the PTU is enclosed, the safety system will also remove the ignition source by cutting the power supply in case the gas detector should measure above 25% of the Lower Explosive Level (LEL).
    • Automatic operation; the system is automatically controlled by the PLC controller board which reduces the risk for manual errors and operation problems. The main function is to provide safe, optimal and stable conditions for the biological process. The signals can be made available in the control room.
    • Low operating costs; the system uses no chemicals and has a very low electrical consumption. In many projects BioGasclean uses treated water from an anaerobic digester or an aeration pond as scrubber liquid and nutrient source. This is easily accessible and cheaper than soft water and industrial fertilizer.
    • Guaranteed performance; BioGasclean provides Performance Guarantees on all projects.