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What is a Propane Air Mixer? Overview

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17.03.2025

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Propane is a highly efficient and versatile fuel used in a variety of applications, from outdoor fire pits and grills to industrial equipment and backup generators. However, propane, in its pure form, is a dense fuel with a higher energy output compared to natural gas. It should be mixed with air to optimize its combustion process and ensure compatibility with specific appliances. This is where the propane air mixer comes into play.

What is a Propane Air Mixer? Overview

What Is Propane Air?

To better understand “What is a propane air mixer?” let’s first consider a propane air mixture. Often referred to as LPG-air or Synthetic Natural Gas (SNG), it is a blend of vaporized LPG or propane and air meant to simulate the properties of natural gas. The ratio of propane to air can vary depending on the specific requirements of the application, but a typical blend consists of approximately 40% propane and 60% air. This dilution process reduces the energy density of propane, aligning it more closely with the content and energy characteristics of natural gas. As such, when blended with air, propane becomes interchangeable with natural gas, allowing appliances and systems powered by natural gas to function smoothly without extensive modifications. 

What Are Propane Air Mixing Systems?

An air mixer propane system or an LPG gas system is a specialized setup designed to precisely mix propane with air to produce fuel (SNG) with chemical and combustion properties that resemble natural gas. Fully compatible with natural gas, SNG serves as a highly efficient substitute for natural gas. The best thing is that it doesn’t require any additional pipelines, delivery systems, or distribution routes—it can be easily used within the existing infrastructure.

Thus, propane air mixing systems are widely used in industrial settings as a backup energy source to maintain operations even when the primary natural gas supply is unavailable or complement natural gas power in heavy-duty applications in manufacturing plants, food processing, chemical and pharmaceutical industries, power generation facilities, and remote industrial sites.

5 Main Areas of Using Propane Air Mixer Lines

Propane air mixing systems are versatile and efficient solutions designed to provide energy in various scenarios for industries, utilities, and communities alike. Here are major usages showcasing the adaptability and importance of such systems in ensuring an uninterrupted energy supply.

  • Primary energy source in locations where natural gas infrastructure is absent or impractical to install. This is especially common in rural, remote, or isolated areas with limited pipeline access.

Primary energy source
  • Backup energy system during natural gas supply disruptions, outages, and shortages for any reason and during scheduled centralized pipeline and gas network maintenance.

Backup energy system
  • Transition fuel source for temporary setups, such as construction sites or events, and for communities to access natural gas-equivalent energy while waiting for permanent infrastructure. The same is true for businesses moving to new locations. 

Transition fuel source
  • Peak shaving to manage increased energy demand during periods of high usage and reduce strain on centralized gas networks during seasonal spikes.

Peak shaving
  • Emergency energy supply in case of natural disasters and unforeseen events that disrupt energy infrastructure to ensure heating, lighting, and cooking capabilities.

Key Components of Propane Air Mixing Systems

You can find stationary and mobile mixing systems. Stationary systems are meant for higher workloads and are used in industrial and commercial applications. Meanwhile, a mobile LPG backup mixer is a great choice for residential use and temporary setups. Both system types normally consist of several key components.

Propane storage

Propane is typically stored in pressurized tanks or bulk storage facilities. The system draws propane from these tanks and regulates its flow into the mixing unit.

Vaporizer

Stored in a liquid form, propane should be reverted to its gaseous state to be blended with air. This is what a vaporizer is used for.

Air supply

Ambient air is introduced into the system using compressors, blowers, or other mechanisms to ensure a steady air supply and efficiently control the airflow.

Mixing unit

The heart of the system is an air mixer for propane that usually includes adjustable valves, flow meters, and regulators to maintain consistent blending and meet specific energy requirements.

Delivery network

Once the mixture is prepared in an LPG gas air mixer, it is transported through pipelines to appliances or equipment, just like natural gas. The consistent composition of the mixture ensures efficient combustion and compatibility with already installed pipelines and distribution equipment.

Benefits of Propane Air Mixing Systems

SNG air systems offer a bunch of advantages that make them increasingly popular across industrial, residential, and commercial sectors.

  • Seamless substitution: These systems allow appliances and equipment designed for natural gas to operate without modification, providing a practical and cost-wise alternative.

  • Flexibility: Since propane is a readily available fuel resource that is easy to store and transport, SNG mixing systems can be deployed in a variety of settings, from minor backup systems to large-scale industrial applications.

  • Efficiency: The precise blending of propane and air ensures optimal combustion, reducing waste and emissions.

  • Cost-effectiveness: Such installations offer substantial cost savings in both short-term applications and long-term energy strategies. The clean-burning nature of propane ensures higher efficiency, reducing fuel wastage and related costs. Besides, depending on the source fuel price, users can switch between natural gas and SNG systems during the year to minimize overall energy expenses.

  • Lower emissions: Compared to other fossil fuels, propane-air systems produce fewer greenhouse gases, sulfur, and particulate emissions.

The main equipment of the PROPANE + AIR system

Partner With I-Maximum for Advanced Propane Air Mixer Solutions

Whether you are a manufacturer or a business owner striving to install a propane-air mixing system as a primary, supplemental, or backup energy source, at I-Maximum, we deliver cutting-edge energy solutions tailored to individual customer needs. Our company has a wide range of automatic SNG blenders, mobile SNG mixers, venturi propane-air mixers, and peak shaving systems on the list to match just about any infrastructural and energy needs. We also offer vaporizers and compressors to build SNG mixing systems from scratch. So, whether you seek to complete your existing infrastructure or need a new turnkey project, we’ll get you covered. Contact us today to find your best solution!

Conclusion

Propane air mixing systems offer a comprehensive solution to modern energy challenges, combining reliability, efficiency, and environmental responsibility. They represent a forward-thinking approach to energy management, ensuring adaptability and security in an ever-changing energy landscape.

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When we use SNG (Propane-AIR)?

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Advantages of SNG gas supply

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Economywith unstable natural gas and LNG markets
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SecurityIndependence from accidents on natural gas pipelines
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SpeedSwitching to SNG does not require replacement or adjustment of burners
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InvestmentsSNG system equipment is cheaper than LNG

most frequently asked questions

1

What is SNG, and where is it applied?

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Synthetic Natural Gas (SNG) is a gas obtained by blending air with any gas or gas mixture, having a calorific value equal to the calorific value of methane. Information on blending Liquefied Petroleum Gas (LPG) with air is presented on our website. SNG is used to replace natural gas in industrial enterprises, gas power plants, and is applied for the gasification of settlements (cities, districts, villages). SNG can also be referred to as gas containing methane (CH4), obtained through coal gasification. Bio-SNG can be called gas containing methane, obtained through biomass gasification or biogas recovered from landfills, but bio-SNG can also be referred to as gas obtained in the process of blending bio-LPG with air.
3

What is the cost of SNG system and how to choose the equipment?

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To select the appropriate equipment and estimate costs, four main parameters need to be considered: 1. Maximum flow of SNG or natural gas per hour in normal cubic meters (Q = ? Nm3/h or MMBTU/h). 2. Gas pressure at the connection point (P = ? from 0.035 to 10 bar or from 0.5 to 145 psi). 3. Required calorific value of the gas (heat of combustion), for example, for natural gas 8,900 kcal/m3 (1000 BTU/Cu.Ft.), but some facilities in the European Union may use nitrogen-enriched gas, and its calorific value may be 5,260 kcal/m3 (22.0 Mj/m3). 4. Propane and butane ratios in LPG gas, for example, 60% propane and 40% butane. 5. The installation costs of SNG systems are several times lower than the installation costs of LNG for industrial enterprises. Please leave us your request on our website with the above-mentioned parameters, and we will send you an offer for connecting the SNG system.
2

What is SNG blender (LPG Air Blender)?

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SNG-blender, is a device where LPG (liquefied petroleum gas) and air are automatically mixed under high pressure in the required ratio, producing SNG gas (synthetic natural gas) with properties similar to natural gas (NG). The SNG-blender is characterized by its precision, automated gas mixing process, and a broad range of adjustments for calorific value and pressure.
4

(BioLPG) BioPropan, bioDME - what is it? Can BioLPG be used for transportation?

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BioLPG, also known as BioPropan, is a type of gaseous fuel that is identical in composition and chemical properties to traditional liquefied petroleum gas (LPG) but is produced from organic materials or waste. The BioLPG production process may involve processing various organic raw materials such as sewage sludge, agricultural residues, sawmill waste, and even bioethanol or the synthesis of renewable hydrogen and carbon dioxide. Currently, BioLPG finds practical application in gas supply systems in the United Kingdom. One of the interesting technologies is the production of DME, which stands for dimethyl ether, a gas similar to propane. DME can serve as both a finished product and an intermediate raw material for the production of biopropane. Its main source of production is the dehydration of methanol. Various raw materials are used for production, including biomass, waste, wood, agricultural products, as well as fossil fuels such as gas and coal. DME can be blended with LPG in proportions of 20% for household purposes (heating and cooking) and 25% - 30% for transportation purposes.
1

What is SNG, and where is it applied?

Created with Pixso.
Synthetic Natural Gas (SNG) is a gas obtained by blending air with any gas or gas mixture, having a calorific value equal to the calorific value of methane. Information on blending Liquefied Petroleum Gas (LPG) with air is presented on our website. SNG is used to replace natural gas in industrial enterprises, gas power plants, and is applied for the gasification of settlements (cities, districts, villages). SNG can also be referred to as gas containing methane (CH4), obtained through coal gasification. Bio-SNG can be called gas containing methane, obtained through biomass gasification or biogas recovered from landfills, but bio-SNG can also be referred to as gas obtained in the process of blending bio-LPG with air.
2

What is SNG blender (LPG Air Blender)?

Created with Pixso.
SNG-blender, is a device where LPG (liquefied petroleum gas) and air are automatically mixed under high pressure in the required ratio, producing SNG gas (synthetic natural gas) with properties similar to natural gas (NG). The SNG-blender is characterized by its precision, automated gas mixing process, and a broad range of adjustments for calorific value and pressure.
3

What is the cost of SNG system and how to choose the equipment?

Created with Pixso.
To select the appropriate equipment and estimate costs, four main parameters need to be considered: 1. Maximum flow of SNG or natural gas per hour in normal cubic meters (Q = ? Nm3/h or MMBTU/h). 2. Gas pressure at the connection point (P = ? from 0.035 to 10 bar or from 0.5 to 145 psi). 3. Required calorific value of the gas (heat of combustion), for example, for natural gas 8,900 kcal/m3 (1000 BTU/Cu.Ft.), but some facilities in the European Union may use nitrogen-enriched gas, and its calorific value may be 5,260 kcal/m3 (22.0 Mj/m3). 4. Propane and butane ratios in LPG gas, for example, 60% propane and 40% butane. 5. The installation costs of SNG systems are several times lower than the installation costs of LNG for industrial enterprises. Please leave us your request on our website with the above-mentioned parameters, and we will send you an offer for connecting the SNG system.
4

(BioLPG) BioPropan, bioDME - what is it? Can BioLPG be used for transportation?

Created with Pixso.
BioLPG, also known as BioPropan, is a type of gaseous fuel that is identical in composition and chemical properties to traditional liquefied petroleum gas (LPG) but is produced from organic materials or waste. The BioLPG production process may involve processing various organic raw materials such as sewage sludge, agricultural residues, sawmill waste, and even bioethanol or the synthesis of renewable hydrogen and carbon dioxide. Currently, BioLPG finds practical application in gas supply systems in the United Kingdom. One of the interesting technologies is the production of DME, which stands for dimethyl ether, a gas similar to propane. DME can serve as both a finished product and an intermediate raw material for the production of biopropane. Its main source of production is the dehydration of methanol. Various raw materials are used for production, including biomass, waste, wood, agricultural products, as well as fossil fuels such as gas and coal. DME can be blended with LPG in proportions of 20% for household purposes (heating and cooking) and 25% - 30% for transportation purposes.

comparison of the exchange value of natural and liquefied gas in 2021-2023, €/MWh

The chart is based on TTF and Argus (daf Brest) quotes in 2021-2023.

TTF – The Title Transfer Facility, is a virtual trading point for natural gas in the Netherlands.
Argus (daf Brest) - daily quotes for liquefied gas prices on the Belarusian-Polish border

I-Maximum in numbers

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1The first manufacturing of GAS mixers in Poland
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2020 years of engineering experience
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+500More than 500 installed LPG vaporizers
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+10More than 10 installed SNG mixers

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About I-Maximum Company

I-MAXIMUM - an engineering company that provides energy solutions for industrial LPG systems, Synthetic Natural Gas (SNG). Offers gas installation technologies for enriching biogas and biomethane. We specialize in the production and delivery of precise gas blending installations that effectively replace the use of coal, heating oil, gas, and other fuels at our clients' facilities. I-maximum gas equipment to the decarbonization of the industrial, heating, food, and many other sectors.

Presentation of the new I-Maximum manufacturing plant

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Presentation of the new I-Maximum manufacturing plant - LPG systems engineering. Event on April 26, 2024 near Warsaw as part of the Gaseous Fuels Forum 2024. If you are interested in receiving videos of all presentations about gas equipment company I-MAXIMUM, please view the program of production presentations gas systems engineering company and fill out the subscription form at the following link: https://i-maximum.com/presentation2024 

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The Teams I-Maximum engineering company

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