Driving Innovation, Efficiency, and Sustainability in the Biogas Industry

Biogas production converts organic waste into renewable energy through anaerobic digestion (AD). In this oxygen-free process, microorganisms break down materials such as agricultural waste, manure, food waste, wastewater biosolids, and sewage within sealed digesters, producing biogas primarily composed of methane and carbon dioxide.

To optimize biogas yield and digester performance, effective mixing is essential. Many facilities use gas recirculation systems that capture biogas from the digester headspace, compress it, and re-inject it through diffusers at the bottom of the digester. The resulting gas bubbles improve liquid circulation, mixing efficiency, and methane saturation. This process is commonly supported by Rotary Lobe, Screw, or Claw blowers operating at pressures up to 1.5 bar(g).

The biogas produced can be used for heat and power generation or upgraded to biomethane for injection into gas grids and vehicle fuel applications. The remaining digestate can be processed into fertilizer products, making anaerobic digestion a sustainable solution for waste management and renewable energy production.

Biogas collection begins with capturing gas generated from organic waste through storage tanks, pipelines, and collection wells. Since raw biogas contains contaminants such as water vapor, hydrogen sulfide (H2S), and siloxanes, effective gas treatment is essential.

Ingersoll Rand supports this process with:

• Integrated vacuum systems

• Blower solutions

• Industrial pumps

• Advanced filtration technologies that help remove impurities and prepare biogas for downstream processing and utilization.

Primary treatment is a critical stage in biogas processing, where impurities such as water vapor, hydrogen sulfide (H2S), and siloxanes are removed to protect equipment and improve gas quality.

Ingersoll Rand supports operators achieve efficient contaminant removal, enhance system reliability, and optimize downstream biogas upgrading and utilization in this process with an integrated portfolio of:

• Centrifugal and Positive Displacement Blowers

• Vacuum solutions

• Chemical Injection and Process Flow Pumps

• Air Dryers

Biogas compression is a critical step following purification, where methane-rich gas is compressed to high pressures for storage, transportation, or further use.

Ingersoll Rand's specialized natural gas compression solutions are engineered to handle the demanding conditions of biogas and biomethane applications, delivering safe, reliable, and efficient performance while supporting downstream processing and distribution.

Gas cooling and drying are essential steps in biogas processing, reducing gas temperature to condense and remove residual moisture.

Ingersoll Rand's Air Compressor Dryers helps prevent corrosion, protects downstream equipment, and ensures reliable, efficient performance throughout the biogas system.

Biogas upgrading is a critical purification process that transforms raw biogas into high-quality renewable natural gas (RNG) by removing carbon dioxide, moisture, oxygen, nitrogen, hydrogen sulfide, siloxanes, and other contaminants. This process enhances methane concentration to meet pipeline injection and vehicle fuel standards, enabling safe, reliable, and efficient use of biomethane in energy and transportation applications.

The compressed and dried biogas is stored in high-pressure tanks or transported through pipelines or loading arms for various uses. Our loading and unloading arms are used for the distribution and transport of pressurized or liquified biogas, and used when biogas must be transported via truck, railcar or vessel.

The product of the upgrading process is a high-quality RNG that is virtually indistinguishable from fossil natural gas. The gas must be easily detectable to ensure safe gas consumption. For this reason, RNG is odorized with a special blend of tetrahydrothiophene (THT) or mercaptan variations (such as TBM, DMS, or other types of odorants). Ingersoll Rand's specialized odorizers for these applications help you meet regulatory requirements.

Remote monitoring plays a vital role in ensuring safe, reliable, and efficient biogas and RNG operations.

Ingersoll Rand's specialized IIoT solutions enable continuous monitoring of critical parameters such as pressure, temperature, and gas quality, even in hazardous and potentially explosive environments. Designed for demanding applications, these technologies provide real-time visibility, enhance operational safety, support proactive maintenance, and help maximize system uptime and performance.