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1 The HRS BDS is skid-mounted for easy access and freedom of movement 2 The HRS BDS removes water from biogas, protecting CHP engines from corrosion and cavitation 3 The global production of biogas is increasing, and so is the demand for systems such as the HRS BDS (Image: IEA 2024)
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installations as operators refurbish plants and look to improve operating efficiencies,” he added. “As the combined heat and power (CHP) engine is one of the most expensive pieces of equipment on an AD plant, protecting it makes good business sense.” BENEFITS OF THE HRS BDS If water enters a CHP engine it can decrease its efficiency, resulting in reduced biogas yields and engine damage. The BDS removes water from biogas, protecting CHP engines from corrosion and cavitation. It also includes a heat recovery section which helps increase the overall energy efficiency of an AD plant. The BDS works by reducing the temperature of the raw biogas from around 40°C to approximately 5-7°C, condensing more than 90% of the water volume. It uses a chiller system which supplies a coolant that is transferred to heat exchangers. Biogas flows on the product side
of the exchanger, while the coolant flows on the service side. As the biogas cools, the water condenses from the gas, leaving a clean and dry biogas ideal for use in CHP engines. Heat recovery uses the resulting cold biogas to pre-cool the warmer incoming biogas, reducing the load on the final cooling heat exchanger and recovering as much as 20% of the energy needed for the process. The HRS BDS is suitable for AD plants of all sizes and is skid-mounted for easy access and freedom of movement. It also features an automatic control panel for full process control and can be adapted for ATEX-compliant applications. References 1 EBA. €25bn in private investments secured for the growth of the biomethane sector in Europe by 2030. <https://www.europeanbiogas.eu/ e25-billion-in-private-investments-secured-for- the-growth-of-the-biomethane-sector-in-europe- by-2030/>
2 ABC. Third year of record growth for US biogas industry; expected to continue in 2024. <https:// americanbiogascouncil.org/third-year-of-record- growth-for-u-s-biogas-industry-expected-to- continue-in-2024-2/> 3 IEA. The outlook for biogas and biomethane to 2040. <https://www.iea.org/reports/outlook-for- biogas-and-biomethane-prospects-for-organic- growth/the-outlook-for-biogas-and-biomethane- to-2040> Images: HRS Heat Exchangers
Antonio Guillermo Jara Ponce Systems sales manager, HRS Heat Exchangers
Water & Wastewater Asia | September-October 2024 39
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