Positive pressure waste heat boiler
Thread Content
We currently have a flue-type waste heat boiler with a rated pressure of 4.7 MPa and a designed flue gas pressure of 0.2 MPa. The client has requested that we carry out the design in accordance with pressure vessel standards; how should we proceed with the design calculations?
By designing it in the form of a smoke pipe, with smoke flowing inside the pipe and water inside the shell, it can then meet the requirements for approval as a pressure vessel
A fire-tube waste heat boiler is the most suitable for this situation.
Due to structural constraints, it is not suitable for use as a flame tube; the normal temperature of the flue gas is 1450 degrees
Furthermore, this waste heat boiler is required to produce 4.7MPA saturated steam for power generation and to drive fans
Fire-tube boilers work fine; we have used ones with a flue gas inlet temperature of 1050 degrees