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Home Service FAQs FAQ of gas-fired(oil-fired) boilers What are the design requirements for a 40tph Boiler that operates on oil cum RLNG dual fuel?

What are the design requirements for a 40tph Boiler that operates on oil cum RLNG dual fuel?

20 Feb 2026

A 40tph Boiler represents a significant industrial energy source, often used in large-scale chemical plants or central heating projects. When the requirement specifies oil cum RLNG dual fuel (Regasified Liquefied Natural Gas and Oil), the boiler must be versatile and robust. The ability to switch between liquid oil and gaseous RLNG ensures energy security for the user—if one fuel supply is interrupted, the other takes over.

For this 40tph Boiler capacity, ZOZEN recommends the SZS series. This is a double-drum, longitudinal "D-type" layout water tube boiler. The membrane wall construction ensures excellent sealing and high heat transfer efficiency. Crucially, for oil cum RLNG dual fuel applications, the burner selection and furnace sizing are paramount. ZOZEN engineers the furnace to be large enough to accommodate the different flame characteristics of both oil and gas, preventing flame impingement on the tube walls which could cause damage.

ZOZEN's strength lies in its ability to integrate complex fuel systems. The control system is programmed to handle the switchover between RLNG and oil seamlessly, adjusting the air-fuel ratio automatically to maintain safe and efficient combustion. With an annual production capacity of 2,000 boilers and advanced CNC manufacturing equipment, ZOZEN can deliver this large-scale 40tph Boiler with high precision, ensuring it meets the rigorous demands of dual-fuel operation while maintaining thermal efficiency above 98%.

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