Renewable Natural Gas

Renewable Natural Gas is Green, Safe, and Efficient

Engineers can produce renewable natural gas (RNG) from naturally occurring sources such as food waste, lawn clippings, manure, and other animal/plant-based materials to create biodegradable fuel for cars and energy plants. Also known as biomethane or biogas, RNG can be produced using three different methods:

  • Anerobic digestion, in which microorganisms digest moist organic material and convert the energy into heat, which later processes convert into electricity
  • Thermal gastrification, in which workers heat dry organic material so that it breaks into hydrogen, carbon monoxide, and carbon dioxide, channeling the energy from broken chemical bonds into electricity
  • Sabatier reaction, which creates carbon-neutral fuel by using pressure to break organic material into smaller hydrocarbon molecules, also generating electricity from the breakdown of chemical bonds

After sending raw materials through one of these reactions, workers purify the gas, removing compounds such as water, carbon dioxide, and hydrogen sulfide. After fully refining the RNG, energy grid professionals send it through natural gas pipelines along with gas obtained via fracking or other methods, allowing it to become a part of the overall supply of natural gas.

Complete Skid Systems

Skid systems create digesters and landfill gases, producing RNG that’s ready for use on-site or for transportation by pipelines. Incorporating skid systems will benefit all stages of the RNG production process, from raw feedback to final product processing. Skid-mounted systems remove deficiencies present in unrefined RNG, such as water, carbon dioxide, oxygenate, sulfur compounds, solvents, and liquefied petroleum gas.

Glauber Equipment designs a number of skid system components. Our offerings include:

  • Feed blowers: These components increase pressure as part of the thermal gastrification process to prepare raw materials for treatment and compression. Feed blowers pair seamlessly with gas dehydration equipment and help mitigate the high moisture levels at the beginning of the RNG refinement process.
  • Vacuum blowers: We offer vacuum blowers to separate carbon dioxide and methane membranes, which increases your equipment’s lifespan. Vacuum blowers also allow the gas to meet product specifications and requirements.
  • Feed gas compressors: Engineers apply feed gas compressors to the positive pressure side of the methane membrane. They keep downstream equipment and compressors from harm using an inlet knockout. They also use moisture separators to enhance output purity.
  • Product gas compressors: Product gas compressors manage pipeline-quality gas once it’s reached 95–99% methane content. These tools help compress clean and dry RNG, preparing it for transportation.
  • Complete cooling systems: These systems maintain safe operating temperatures for RNG processing. They operate using cooling methods like heat exchanging systems, glycol pumps, and chilled water. They also use ambient air heat exchangers based on fan cooling or dry evaporative coolers.

Standards and Specifications

The RNG industry regularly sends sensitive and volatile materials through a series of delicate tasks. As such, it’s essential to maintain high safety standards to guarantee productive operation.

We design high-performance equipment using smart designs that comply with a number of industry regulations, such as:

NEC Article 500 Class 1, Division 1/2: Our entire stock is certified explosion-proof, making all our products intrinsically safe for use in hazardous areas.

Pressure relief valves: All our pipes and tanks come with valves that safely vent fluids from systems experiencing dangerous or damaging pressures, temperatures, or gas levels. Glauber’s instrumentation and control systems can automatically detect and shut down systems to maintain facility safety.

High-performance materials: Piping, elastomers, and panels must all safeguard against corrosion, high temperatures, and toxic chemical leaks. Our Equipment can design systems for marine environments and extreme weather conditions. We also can soundproof equipment as needed.

B31.1 and B31.3: We design all our equipment in accordance with B31.1 and B31.3 welded pipe specifications for power and chemical applications.

Benefits of Switching to Renewable Natural Gas

Switching to RNG for energy production comes with a host of benefits, including:

  • Reduced greenhouse gas emissions
  • Improved waste management
  • Increased domestic energy production

RNG burns cleaner than other types of gas—not to mention fossil fuels. RNG’s chemical properties allow it to break down methane during the combustion process, meaning that it does not release this toxic chemical to the Earth’s upper atmosphere. Its unique properties also allow it to recycle previously circulated carbon and factor that back into energy production.

Switching to RNG also helps your facility or community more efficiently manage waste. Engineers can synthesize RNGs from most biomasses, including compost, waste material from food or feed, or the parts of plants not used for human or animal consumption. This helps alleviate waste buildup at landfills while also allowing providing a good use for surplus material, reducing your carbon footprint. What’s more, domestically produced RNG requires less transportation and storage, further reducing both the environmental and economic impact of generating energy using this gas.

Applications of RNG

Many industries benefit from sending their waste to RNG producers for refining. Some of the most notable biomass suppliers include:

Landfills: Landfills already function as natural collection points for biomass that can be refined into RNG. Most landfills already produce their own form of biogas (called landfill gas, or LFG) naturally, and engineers can further refine this into RNG.

Livestock: Dairy, hog, and poultry farms produce substantial animal waste that can be refashioned into RNG. Animal manure is a great candidate for anaerobic gas production, producing biogas that is useful for vehicles that run on natural gas. Additionally, RNG producers can work with excess animal feed and additional organic products found on ranches.

Wastewater: Regularly straining wastewater for solid compounds can result in a wealth of organic compounds that can be refashioned into biogas. Implementing an RNG production process with biomass derived from wastewater can meet as much as 12% of national electricity demand.

Other sources: Many facilities produce at least some form of organic waste. Converting discarded biomass from industrial, institutional, and commercial facilities like supermarkets, restaurants, hospitals, and schools can yield a large amount of raw material that can be converted to RNG.

Compost Is Power at Glauber Equipment

Our Equipment offers a customizable array of skid systems to create highly efficient RNG for fuel and electricity.

Download our free eBook: RNG Skid Systems Overview to learn more about Glauber Equipment’s line of RNG Skid Systems.