Gas-source reading
Temperature, mass flow, composition and dust load define the first engineering boundary.
Waste-heat recovery boiler
CRS firetube recovery boiler for turning industrial exhaust heat into useful steam.
A horizontal firetube recovery boiler calculated project by project for exhaust-gas flow, temperature, pressure target and plant constraints, from compact 500 kg/h packages to large recovery duties near 50 t/h when the process data supports it.
Recovery route
Project-specific sizing
The tube bundle is defined after the gas source, pressure duty and plant integration are understood.
The CRS architecture uses a horizontal cylindrical vessel with tube sheets at both ends and a firetube bundle inside the shell. Tube number, diameter and length are selected from the thermal balance, gas-side limits, steam objective and pressure drop that the process can accept.
- Recovery-only arrangement when the available exhaust heat is enough for the steam objective.
- Combined recovery-burner arrangement when backup firing or load completion is required.
- Multiple gas inlets when separate exhaust streams must exchange heat with a common water-side circuit.
- Economizer integration when the downstream temperature window allows additional heat recovery.
Steam objective
Pressure, saturation condition and demand profile guide shell volume, tube bundle and control strategy.
Integration route
Layout, access, economizer position and downstream stack logic must be read together.
Final calculation
Each CRS is individually calculated before the final machine is frozen for fabrication.
Next engineering step
Start with the exhaust-gas data, then close steam pressure, capacity and integration limits.
For a first CRS reading, the useful package is gas temperature, flow, composition, available pressure drop, desired steam pressure, expected production, operating hours, footprint, maintenance access and whether the heat source comes from a turbine, engine, solid-fuel chamber, furnace or separated exhaust streams.