{"id":138,"date":"2026-07-14T01:12:44","date_gmt":"2026-07-13T23:12:44","guid":{"rendered":"https:\/\/gasmix.net\/?page_id=138"},"modified":"2026-08-05T12:52:46","modified_gmt":"2026-08-05T10:52:46","slug":"faq","status":"publish","type":"page","link":"https:\/\/gasmix.net\/index.php\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"\t\t
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Gas Mixing Systems, SNG, LPG & CO\u2082 \nVaporizers<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t

Frequently Asked Questions (FAQ)<\/strong><\/h1>\n\t\t\t\t\t

This FAQ page answers the most common questions about gas mixing systems, SNG production, LPG and CO\u2082 vaporizers, biomethane enrichment with propane, and nitrogen blending for caloriFc value adjustment. Furthermore, all answers are based on veriFed technical knowledge and GasGenix engineering experience from over 300 completed installations across Europe.<\/p>\n\t\t

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SNG & Gas Mixing Systems<\/strong><\/h2>\n\t\t\t\t
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What is SNG (Synthetic Natural Gas)? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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SNG stands for Synthetic Natural Gas. It is produced on-site by blending LPG (propane or butane) with compressed air in a precisely controlled ratio. As a result, SNG achieves combustion parameters – particularly the Superior Wobbe Index (Ws) – equivalent to natural gas.<\/p>

Furthermore, SNG is used as a direct substitute for natural gas in industrial burners, boilers, and gas appliances. Therefore, no burner modiFcation or reconFguration is required when switching from natural gas to SNG. This makes it the most practical gas backup solution available.<\/p>

Source<\/strong>: EN ISO 6976:2016<\/a>\u00a0<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Where are gas mixing systems and SNG blenders used? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Gas mixing systems are used wherever a reliable gas supply is critical. Moreover, they serve industries where natural gas supply is unavailable, insuUcient, or too costly to connect. SpeciFcally, typical applications include:<\/p>

  • Glass factories and ceramic manufacturers.<\/li>
  • Power plants and cogeneration (CHP) units.<\/li>
  • Metallurgical and steel production facilities.<\/li>
  • Food and confectionery manufacturing plants.<\/li>
  • Gas distribution network operators – peakshaving and backup.<\/li>
  • Biomethane production plants – grid injection conditioning.<\/li>
  • Residential district heating complexes.<\/li>
  • Any industrial facility where building an NG pipeline is uneconomical or technically impossible.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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    Can SNG replace natural gas without changing burners? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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    Yes<\/strong>. This is the key advantage of a properly designed gas mixing system. SNG produced from LPG and air achieves a Wobbe Index equivalent to natural gas. Therefore, it is fully combustion-interchangeable. As a result, industrial burners, boilers, kilns, and furnaces operate on SNG without any modification, reconfiguration, or replacement. Furthermore, switchover from natural gas to SNG is automatic – without interrupting production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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    How do I select the right SNG gas mixing system? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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    To select the appropriate gas mixing system, four parameters are needed:<\/p>

    • Maximum flow rate of end-use appliances: Total installed power of all burners, boilers, or process appliances to be supplied with SNG – expressed in kW (total thermal
      input).<\/li>
    • Required outlet gas pressure: P = ? bar (typically 1 to 10 bar).<\/li>
    • Target Wobbe Index: e.g. Ws = 45.5 \u2013 54.7 MJ\/Nm\u00b3 for H-gas specification – or alternatively, the heating value of the reference gas (natural gas).<\/li>
    • LPG composition: e.g. 95% propane + 5% butane, or bioLPG.<\/li><\/ul>

      Additionally, ambient operating temperature and installation location (indoor \/ outdoor \/ containerised) affect equipment selection. Therefore, contact GasGenix with these parameters for a customised system offer and OPEX analysis.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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      What is the difference between an automatic SNG blender and a Venturi mixer? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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      An automatic SNG blender uses precision flow control valves, mass flow meters and a PID control system to maintain the exact LPG-to-air ratio. As a result, it delivers \u00b11.00% mixing accuracy and a stable Wobbe Index regardless of flow variations and LPG composition. Capacity: 100 to 10,000 Nm\u00b3\/h.
      A Venturi mixer uses the Venturi effect to draw air through the LPG stream without active control. However, mixing precision is lower – particularly at variable flow rates. Furthermore, maximum outlet pressure is limited to approximately 0.5 bar. Therefore, Venturi mixers are suitable for simple, smaller-scale applications with stable flow rates.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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      Is propane (LPG) more calori3c than natural gas? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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      Yes<\/strong>. Technical propane (C\u2083H\u2088) has a gross calorific value of approximately 100.5 MJ\/Nm\u00b3 – compared to 39\u201341 MJ\/Nm\u00b3 for natural gas (H-gas group E). Therefore, propane is approximately 2.5 times more calorific than natural gas per unit volume.<\/p>

      Additionally, propane has a consistent, stable calorific value – unlike natural gas, which can vary by supplier and season. As a result, SNG produced from propane and air delivers a stable, predictable energy output to industrial processes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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      What are the costs of operating an SNG gas mixing system? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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      The main operating cost of an SNG system is the price of LPG fuel. Furthermore, equipment operating costs – including LPG vaporization energy, compressor electricity, and maintenance – amount to approximately 2-3% of the LPG wholesale price.<\/p>

      GasGenix provides a comprehensive OPEX and energy performance analysis for each project. This analysis quantifies the total cost of ownership and the financial benefits compared to natural gas supply. Moreover, during periods of high natural gas prices, SNG can be significantly more cost-effective.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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      Do I need special permits to install an SNG backup system? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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      Generally, no special permits are required from the natural gas supplier. This is because the SNG system connects after the natural gas metering node – not to the public gas network itself.<\/p>

      However, local regulations apply to the installation of LPG storage tanks, vaporizers, and pressure equipment. Furthermore, all GasGenix gas mixing systems comply with EN ATEX and PED directives, and are supplied with CE certification and UDT\/T\u00dcV documentation as required. Installation typically takes approximately 2-4 weeks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t