Biomethane plants with ETW SmartCycle® technology: efficient and flexible energy generation

Biomethane plants with ETW SmartCycle technology set the benchmarks in terms of energy requirements, product purity and running costs. The ETW SmartCycle process adapts fully automatically to variable amounts and compositions of raw gas, so that a gas product is always generated with a constant calorific value.

The feeding in of biomethane is a key factor in the energy transition and the basis for attractive business models – if the gas quality is right. Our plants guarantee this even in the case of fluctuating raw gas quality or contaminants in the raw biogas.

Flexible plant management

With ETW SmartCycle technology, raw gas quantities can be processed flexibly and without any loss of gas quality. As such, the amount of raw gas can be reduced to up to 30% of the originally intended amount.

Low maintenance

ETW SmartCycle technology enables smooth plant operation. The molecular sieves used for carbon separation have an almost unlimited service life as they are regenerated. Construction of the systems is well structured and easy to maintain.

Compact design

Our processing plants are characterised by their flexible operation and design. They are pre-assembled in ISO standard containers so they can be set up promptly and to save space. This approach reduces the logistics effort involved and makes it easier to convert existing agricultural systems.

Superior energy efficiency

Due to the SmartCycle operating principle and the low pressure levels during gas separation, ETW processing plants work very energy-efficiently with low electricity consumption. The total energy required including raw gas conditioning is 0.15kWh/Nm³ of raw gas.

Environmentally friendly

ETW SmartCycle technology works entirely mechanically so no chemicals or water are required. This means quantities of waste are avoided that may constitute an unpredictable cost factor.

Maximum quality

All ETW systems are made in Germany, ISO-certified and tested in accordance with current standards. They meet the highest standards of quality and reliability. Our reference systems have been running error-free for years and consistently provide the same quality.

How ETW SmartCycle technology works

ETW uses the pressure swing adsorption process to separate gas mixtures. As such, CO2 or other disruptive elements are separated out in the treatment system.

The system has several columns that are filled with adsorbents. Each column goes through a cyclical sequence of pressure levels and generates highly pure and dry biomethane. The column cycles are timed in such a way that a continuous flow of gas is guaranteed.

After each adsorption phase, the adsorbent is regenerated and the CO2-rich off-gas is separated. Based on this principle, product gas purities of up to 99% methane content can be achieved.

DELIVERY PROGRAMME

BIOMETHANE PLANTS

All ETW biomethane plants are characterised by their low energy consumption, high product purity and low operating costs. The ETW SmartCycle® process enables a high quality product gas with a constant calorific value even with varying raw gas amounts and compositions. Conditioning before feeding into the natural gas grid is not required. Our standardised modules enable very short implementation times. Special sizes are possible.