ETW Energietechnik from Moers develops the CH₄ and CO₂ full value solution

With an increasing demand for CO₂, especially from sustainable sources, to generate the corresponding CO₂ quotas, ETW Energietechnik has added a new technology to its portfolio. ETW‘s SmartCool^® LCO₂ plant can be perfectly integrated into the ETW SmartCycle^® biomethane plant so that the full value of biogas can be accessed.

ETW‘s biomethane plants upgrade biogas to natural gas quality by separating CH₄ from CO₂. The CH₄ can be injected into the natural gas grid and made available in the fuel market. Since the upgrading technology developed by ETW also generates CO₂ with a very high degree of purity, it was a logical step to develop a technology that transforms an otherwise rejected emission into a value-added product.

The result is a high-quality biomethane as a direct substitute for fossil natural gas as well as a liquid bio-CO₂ in a food grade quality standard. In combination, ETW‘s plant can thus be operated emission-free and with full CH₄ recover. The result is a major contribution to the reduction of greenhouse gas emissions accounted to the fuel and energy sector.

Important advantages at a glance:

• High CH₄ product purity up to 99% CH₄
• High CO₂ product purity according to EIGA standard up to 99.9% CO₂
• The lowest energy consumption on the market
• Highest yield and GHG quota generation
• Operator friendly, very low maintenance
• Very high proven plant availability of >99%.
• Fully integrated CH₄ and LCO₂ system without unnecessary interfaces for the operator.

For biogas plant operators, the solution creates the access to new markets with the competitive advantage of a negative carbon footprint. While substrate logistics and biogas production chain can only be adapted to moderate fluctuations, the consumer markets demand very fast reactions: With ETW Energietechnik‘s products, both sides of the value chain can be decoupled and optimised.

For example, by combining the ETW CHP, ETW SmartCycle® biomethane plant and the ETW SmartCool^® LCO₂ plants, operators can make short-term decisions and profit from fluctuating electricity, natural gas and CO₂ price fluctuations. At the same time, the substrate and digestate logistics can be planned according to the best agronomical practice and aiming a stable fermentation process. That results is the improved efficiency on the input side.

ETW Energietechnik GmbH has been developing and producing energy systems in Moers-Germany since 1997. In its core business, the company concentrates on the construction and servicing of combined heat and power plants (CHP) in the power range from 400 to 4,500 kilowatts, electric, as well as biomethane plants for the upgrading of biogas with the pressure swing adsorption process (PSA) and CO₂ liquefaction plants.

The company is a full-service provider, from design, manufacturing, commissioning and full service support.

ETW Energietechnik‘s customers are composed of large energy suppliers, agricultural businesses, municipalities and industries of various branches and scales that aim for a better energy efficiency, reduced GHG foot prints and sustainable development.

November 4, 2022 - ETW Energietechnik GmbH