Biomethane Injection

The feed-in of biogas methane to the natural gas Grid

Biogas can be upgraded to biomethane and injected into a gas grid.  The feeding of biogas into the natural gas grid is an efficient energy solution, even if the sites in which the gas is to be applied are far away from the sites at which it is produced.  Gas feed-in is facilitated via a compressor, a device raising the pressure level of the biomethane to that of the gas in the closed pressurised lines of the Grid.  This can be the national high pressure gas transmission Grid or a local low pressure gas distribution network.  To be used in the gas Grid, the biogas needs to cleaned of impurities, dried and upgraded to a higher methane content (> 95%) so that it resembles the qualities of natural gas.  This approach is already being used in many countries including Germany, France, Austria and the USA.

Alfagy beats the competition's Operating Expenditure

Our injection plant is the product of more than 40 years of know-how applied in a cost effective manner to optimise gas production.  As of date of publication, our Nm³ produced costs less than half of the competition with little or no maintenance.  Other benefits are:

  • Completely dry process = Robust process control, high availability and no biologic or chemical risk
  • Unlimited adsorbent lifetime = Low maintenance cost
  • Energy demand 0.15 kWh/Nm³ feed gas = Low operation cost
  • Availability at 99% = Proven at our plant in Germany (30,000+ operating hours)
  • Remote control and full-service = Operation of the plant without personal on site
  • Product gas with 97% CH4 and drew point of -65°C = Reliable grid injection and no need to monitor the drew point

Alfagy has the following plant available for fast delivery:

Model      BP335   BP469   BP747   BP1576   BP3152 
               
Feed gas wet Max Nm³/h 335 469 747 1576 3152
  Min Nm³/h 180 241 333 374 374
Product Gas   Nm³/h 167 234 373 788 1576
Power consumption   kWe 64 80 124 243 473
Inclusive feed gas conditioning   kWh/Nm³ 0.19 0.170 0.166 0.154 0.150
               
Plant Dimensions              
Length   m 20.0 22.0 25.0 25.0 30.0
Width   m 10.0 14.0 15.0 16.0 18.0
Height   m 6.0 6.0 6.0 6.0 6.0
               
Sound              
Sound level exhaust without silencer   dB(A) 55 55 55 55 55
               
Intake Biogas - volume flow              
  CH4 % 45 - 80        
  CO2 % 10 - 50        
  H2S ppm 0 - 1000        
  p barg 0.0        
  T °C 40.0        
               
Output Biomethane              
  CH4 % 95 - 99        
  H2S ppm <1        
  p barg 3.0        
  T °C 25.0        
  Dew Point °C <-65        
               
Price for standard scope of supply   £ Request Request Request Request Request
Subject to modifications and amendments
Options: Gas blower station, gas analysis system, gas conditioning system, flare

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