A Comparison of Ceramic Fiber Modules and Fire Clay Castable
Oxidizers treat VOCs, HAPs, and other air contaminants based on proven technology and history. Engineering these systems to the next level allows them to process vapor laden streams with much greater efficiency and lower equipment operating costs. One of the ways to improve on the costs of operating these GCES systems is by properly insulating the combustion chambers with the most effective and efficient insulation materials.
The combustion chamber serves two purposes within the system. Purpose #1 is to input the required heat energy to bring the process and combustion air up to the required operating temperature with the burner firing into the chamber. Purpose #2 is to retain the process stream at the operating temperature for the required time in order to achieve the desired destruction efficiency – this is typically called the residence time. There must be a layer of insulation to account for heat loss during the combustion process. The proven material of insulation is the ceramic fiber module.
Ceramic fiber modules are blocks made of molded ceramic fibers which are used in combustion equipment. The fiber module blocks are installed on the interior surfaces of structures by compression and anchors.
|Advantages of Ceramic Fiber Modules versus Fire Clay Castable|
|Low Thermal Conductivity|| Ceramic Fiber Modules have a low thermal conductivity, which results in high energy savings. The thermal conductivity is about 16-25% that of fire clay castable
Ceramic Modules provide a good barrier to heat conduction and heat radiation, allowing for good insulation performance
|Low Bulk Density||The bulk density of ceramic fiber modules are much less than that fire clay castable insulation, at about 10% when compared|
|High Thermal Shock Strength||Ceramic fiber modules can withstand repeated changes in a large temperature gradient.
Ceramic fiber modules can withstand rapid thermal quench and temperature rise within the normal working temperature.
|High Mechanical Shock Strength||Ceramic fiber modules are flexible and highly elastic.
Ceramic fiber modules are not easily damaged by vibration and impact, which allows for less damage during shipping and installation
|No Cracks and Spalling||Ceramic fiber modules form a sealed insulation lining when installed, which requires no extra layer of lining protection.
The modules are compressed tightly together due to their elastic expansion.
|Easy Installation||Ceramic fiber modules have easy and straightforward installation, allowing for short construction period
No preheating or tempering is required.
Easily repaired and/or replaced if damaged.