Can ZOZEN gas steam boilers run on syngas with a calorific value of 1,500–2,000 kcal/m³?

Yes, ZOZEN gas-fired steam boilers can be configured to operate on syngas (synthesis gas) with a calorific value in the range of 1,500–2,000 kcal/m³. This is significantly lower than standard natural gas (approximately 8,500 kcal/m³), which means the burner system must be specifically matched to handle a higher volumetric gas flow while maintaining a stable air-fuel ratio and consistent combustion performance.

ZOZEN works with professional burner manufacturers to supply customized low-calorific-value burners for each project. The combustion chamber dimensions and flue gas passage are also adjusted accordingly to ensure complete fuel burnout and stable steam output.

For a 5 t/h steam boiler, the WNS series (capacity range: 1–6 t/h, working pressure: 1–1.6 MPa) is a well-suited option. The WNS series features a three-pass wet-back fire-tube design with a large furnace volume, which supports stable combustion even with variable-quality fuel gases. For a 10 t/h requirement, the SZS series (capacity range: 6–35 t/h, working pressure: 1.25–2.5 MPa, thermal efficiency ≥92%) is recommended. The SZS is a water-tube boiler with a D-type layout, offering greater steam output stability and faster load response.

Both series are equipped with fully automatic PLC control systems, safety interlocks, and remote monitoring capability, reducing the need for continuous manual supervision. Customers operating in regions where syngas is produced from coal gasification or biomass gasification have successfully deployed these configurations.

To receive detailed technical datasheets, dimensional drawings, and a project-specific quotation for your 5 t/h and 10 t/h requirements, please contact ZOZEN directly:
📧 info@zozen.com | WhatsApp: +86 18861589035