IGS Cetek catalytic reformer heater process tube coating
Thermal Inefficiencies. In a high temperature environment, steel alloy process tubes will oxidize immediately and scale will develop. This oxidation scale layer acts as an insulator and will lead to a decrease in heat transfer as the scale increases in thickness. To compensate for the insulating effect of the scale, the heater is subjected to excessive fuel firing. The resulting increased temperate promotes the development of further scale. As oxidation continues, tube metal is consumed leading to a decrease in tube wall thickness, which shortens the tube life.
Cetek’s ceramic coatings for process tubes prevent oxidation and scale formation for approximately two turnarounds. This thin-film coating maintains the process tube in a like-new condition, maximizing conductive heat transfer to the process and increasing radiant section efficiency. Likewise, by stopping oxidation, tube metal loss is prevented.
Cetek Ceramic Coatings provide a durable, protective, thin-film layer on the outer surfaces of platformer heater process tubes, which prevents oxidation, corrosion, and carburization of the metal and maintains the tube thermal conductivity coefficient close to new tube conditions. It helps to debottleneck the fired heater, increase unit capacity, save fuel, cut CO2 and NOx emissions, prolong tube life.
Cetek’s patented Dual Emissivity Ceramic Coating technology manipulates and optimizes the heat flux distribution in DCU heaters which would otherwise be susceptible to coking inside tubes.
We designed the dual emissivity coating system to maximize benefits based on the coking pattern of ...
Occasionally, tube supports (wall and roof) in the radiant section of process heaters fail, allowing the process tubes to potentially get out of alignment (sagging or bowing) or even worse, rupturing.
IGS Hot-tek provides on-line repair service to stabilize the process tubes while the heater ...
Thermal Inefficiencies. In a high temperature environment, steel alloy process tubes will oxidize immediately and scale will develop. This oxidation scale layer acts as an insulator and will lead to a decrease in heat transfer as the scale increases in thickness. To compensate for the insulating effect ...
Hot Spot Repair in Live Heaters. Hot spots in the shell of the fired heater limit capacity and can cause a forced shutdown. Our experienced global team mobilizes at short notice to repair refractory online.
What is Refractory Failure?
The refractory may fail prematurely due to the ...
IGS’s High Velocity Thermal Spray (HVTS) solutions upgrade existing metallurgy to higher alloys that provide a barrier to mitigate corrosion and / or erosion in mission critical equipment around the world. This alloy modification is essential to success of these material types when applied with ...
How many times have you been reminded that fired heaters have the greatest running cost of fixed equipment on your site?
Most fired heaters experience a drop in thermal efficiency over time with degradation coming from both radiant and convective sections.
For many units that can ...
Is your fired heater limited by bridge wall temperature, or firing duty? Instead of a full scale revamp, we may address these issues may by the application of Cetek’s High Emissivity Ceramic Coatings to the refractory surfaces. Cetek High Emissivity Ceramic Coatings provide improved efficiency of ...