Coming soon: The Largest Flare System in Asia
December 05, 2017
Giant flames -- as part of flare systems -- are key to keeping refineries running around the world.
Flare technology helps refineries safely dispose of toxic or flammable gases, while its burners reduce and better control emissions, and more efficiently generate heat.
At Hengli Petrochemical in China, Honeywell's Callidus flares will be used in a new, 5,000-ton-per-hour flare system that will be the largest of its kind in Asia when it is completed construction in 2018.
Here's how the system works:
Burners provide the heat
Here is a bottom's up view of a refinery burner. Burners generate heat for refinery processes and typically are fueled by gas. Hengli will use 400 Callidus low-nitrogen oxides (NOx) burners, covering the entire complex.
The reason the flames are blue is because they burn cooler, which is a sign of low-NOx combustion.
Gas in, vapor out
Modern flare systems compress waste gases with steam or air inside the flare system, then burn the mixture to produce a low-particulate product with water vapor and carbon dioxide.
Watch for flares
Flare systems are ready 24/7, which is why flames can occasionally be seen coming out of pipe stacks. Pollutants such as smoke and flare particulates cause air pollution and other environmental consequences that have a serious impact on public health. However, flare systems such as Hengli work to minimize the release of such pollutants.
A pipe stack like this will be erected at the Hengli refinery by the end of 2018. A customized design can help reduce emissions. For Hengli, the technologies will reduce emissions to half of the regulatory limit in China.