Where does the bottom blowdown pipe connect in an HRT boiler?

In an HRT (Heat Recovery Turbo) boiler, the bottom blowdown pipe connects to the under side of the shell at the rear. This design allows for the efficient removal of accumulated sediment and impurities from the boiler water, which primarily collects at the bottom due to gravity. Connecting the blowdown pipe at this location ensures that the maximum amount of contaminants can be discharged, maintaining the boiler's efficiency and safety.

The overall layout of the boiler emphasizes the need for proper drainage of sediments to avoid scaling and other operational issues. Having the blowdown pipe positioned at the rear rather than at the front, top, or middle facilitates better access for maintenance and ensures effective removal of unwanted materials from the water. This helps in prolonging the boiler's lifespan and optimizing its thermal efficiency.