According to POET, the largest producer of ethanol in the U.S., recovering waste heat can improve a plant’s bottom line. The company has been testing a new waste heat recovery system at POET Biorefining – Caro and the results have been good: significant natural gas and water savings. The plant produces 53 million gallons per year of ethanol.
The plant’s system recycles heat from the process, replacing about 10 percent of the facility’s natural gas needs. Water that is condensed in the system is re-used, which reduces overall water use by 5 percent. The technology reduces the amount of live steam running through the process and as a result, the waste heat recovery system also decreases by almost 50 percent the amount of time the plant is shut down for cleaning.
“The waste heat recovery system has been a phenomenal addition to the Caro facility,” General Manager David Gloer said. “We are using less natural gas and less water, which is great for the environment, and this new system reduces our operating cost, making us much more cost competitive. The employees have embraced the new system and have become very proficient in operating the new equipment in a very short time frame.”