Steam plant with 'dual fuel' burner balances heat supply

From old to new, to future-proof: this chemical giant moved its old steam installation aside for a new one, which includes a 'dual fuel' burner. In addition, we offered some extras that make the steam supply even more cost-effective.

The 'dual fuel' burner - or combi-burner - switches smoothly from one energy source to another, depending on availability and energy prices. We connected a steam boiler of 7 tons/h with a built-in economizer to recover energy instead of wasting it.

The customer keeps an eye on his energy consumption through a module installed in the PLC. Measurements and calculations are made continuously. Based on those results, adjustments can be made to keep the efficiency close to 100%.

"Callens' engineering takes into account the highest possible efficiency. We estimate the payback period of the installation at 5 years - a great performance. So we are more than satisfied with our new boiler room!" says the Project Manager of this customer.

This chemical giant likes to keep its options open. By adding a heat-holding coil to the steam boiler, it can function as a back-up boiler in the future without wasting any heat. The primary steam supply can temporarily be derived from neighboring companies who have steam surpluses. This gives our customer two noticeable benefits

• The boiler is quicker to reach pressure upon restart because the water is still warm.
• The burner does not need to stop and start unnecessarily.
• Thermal degasser in steel for optimal feed water - with low O₂ guarantee

The thermal degasser with a capacity of 10 T/h, combined with an inox water service module, guarantees that the oxygen in the water is lower than 20 PPB. This is a requirement for optimally performing feed water. The low oxygen content prevents corrosion and keeps the efficiency of the steam boiler sharp.