The waste heat recovery boiler of the sulfur recovery unit is a typical fire tube boiler.
The multi-pipe surface of the waste heat boiler is connected to the outlet of the heat reactor. It acts as both the rear wall of the reactor and the end of the transition zone.
The waste heat boiler has two functions:
- Recover high heat by producing medium steam.
- Cool down the gas from 1300 ℃ to 315 ℃ during the process.
The aluminous ceramic tube is usually used in the pipe inlet of a waste heat boiler. The ceramic tube is inserted into the inner part of the tube and wrapped around the ceramic fibre for sealing.
90% of aluminium-iron cement refractory is used to pour between the sealing tube and the surface of the tube plate. The thickness is about 100 ~ 150 mm.
Ruichang waste heat boiler quality is guaranteed
The steam/water side of the waste heat boiler is designed according to part one of ASME standard, and the air side of the process is designed according to part VIII of ASME standard. The general pressure level shall not be lower than part two.
After the waste heat recovery boiler is manufactured, the whole annealing heat treatment is carried out to eliminate the stress, and a water pressure test is carried out.