A large chemical plant on the east coast of the United States contacted Howden to perform a full Turnkey project on their critical path air preheaters.
In 2016 a chemical plant in Virginia contacted Howden to perform a full Turnkey project on their air preheaters. They were having severe imbalance issues with the rotor which would lead to rotor drive damage, and possibly bearing damage.
Howden found the following underlying issues; excessive wear on the rotor drive system, including the pinion gear and pin rack being damaged to the point of failure, and significant damage to the cold end baskets.
The customer provided a very short timeframe for the completion of all the necessary repairs, as chemical plants typically have shorter outages. In this case, Howden had just 16 days to complete the project. Due to the limited timeframe, the air preheater project was the critical path from the onset of the outage.