TYPE OF PLANT: Ethanol production plant
CLEANING DATE: March, 2014
NUMBER OF HEAT EXCHANGERS: 2
NUMBER OF TUBES: A: 643 tubes, B: 343 tubes
DIAMETER: 3/4 “
LENGTH: 4000 mm
MATERIAL: Stainless Steel
TYPE OF CLEANING: Mechanic
EQUIPMENT USED: Mitee Mouse ll, Hydrodril Tube Cleaning and
ProSeries 200B Pump System
CLEANERS USED: C4S
SOURCE OF WATER: Lake
An ethanol plant located in Colombia produces ethanol using palm oil. This process uses 5 heat exchangers with water flowing through the tubes and oil through the shell side. The water used in this process is taken from a lake nearby.
PROBLEM: Due to the sediment of calcium in the cooling water, two of the five heat exchangers were totally blocked, affecting the normal performance of the equipment, reducing their efficiency and causing several problems in the generation process.
SOLUTION: Due to the critical status of heat exchangers A and B, and the short time available to perform the service, the strategy used to unblock and clean the tubes according to Conco’s recommendation was: first unblock each tube using the Mitee Mouse II, the HydroDrill Tube Cleaning System, and then clean the tubes shooting cleaners using the Conco ProSeries 200B Pump System. The work was executed by our authorized representative in Colombia.
RESULTS AFTER THE CONCO CLEANING: Using this method and technique gave the crew the ability to remove a total of 150 kg from both heat exchangers, considerably improving the vacuum pressure as described below:
Due to these new vacuum pressure numbers, the plant was able to obtain a significant improvement on the performance and efficiency of the two heat exchangers, normalizing the factory generation process.