>16 % increased waste capacity with , >10 % increased steam production. All three lines provided with FuzEvent in January 2009. Three DD-Jet nozzle heads installed.
STVL Limoges is a French Waste-to-Energy plant, built in 1985, burning household waste on three lines of approx. 4.2 tons/hour capacity each and equipped with Volund grates. The plant is operated by Veolia.
The FuzEvent Installation
The FuzEvent system is installed on all three lines of the plant. The project was started in May 2008 and was completed in January 2009.
The target (guarantees) was to reach a 6 % increase in waste treated. The steam production increase should be 1 ton of steam per line from 10.5 to 11.5 tons/line. Extended tests have been carried out in December 2008, January and March 2009. The results showed that the plant is now performing much better than the defined guarantees. Test results show an increase in the amount of treated waste by 24, 17 and 12 % respectively on line 1, 2 and 3. As a result, the steam production increased by 12 %, from 10.5 to 11.8 t/h.
The DD-Jet Installation
The DD-Jet system is installed on the plant, two units can clean the last two empty radiation passes on all three boilers. The installation was successfully completed in September 2008.
Combustion System Upgrades
The following changes have been made:
- Secondary air injection through the furnace roof, to optimize the combustion
- Cooling water spray mixed in the secondary air jet from the furnace roof nozzles to use as an emergency tool to control the furnace temperature when it tends to run too high in spite of the traditional control measure
The results
The target (guarantees) was to reach a 6 % increase in waste treated. The steam production increase should be 1 ton of steam per line from 10.5 to 11.5 tons/line. Extended tests have been carried out in December 2008, January and March 2009, the results showing that the plant now is now performing much better than the defined guarantees. Test results show an increase in the amount of treated waste by 24, 17 and 12 % on line 1, 2 and 3 respectively. As a result, the steam production increased by 12 %, from 10.5 to 11.8 tons/hour.
The advanced display of the STVL Limoges plant