TIFI® Targeted In-Furnace Injection™ Technology
- Improve Fuel Flexibility
- Reduce Slagging and Fouling
- SO3 Mitigation
Fuel Tech's patented TIFI® Targeted In-Furnace Injection™ technology is an innovative approach to fireside treatment. The design of the process is individualized to each combustion unit, involving the use of two different forms of fluid dynamics modeling coupled with a virtual reality engine. Together, these simulation methods create a furnace model with injection overlays and dosage maps to predict the precise trajectory of an injected chemical, helping to ensure as close to 100% coverage of the targeted zones as possible.
By targeting the problem areas of a furnace instead of targeting the fuel, the performance and cost effectiveness of TIFI® programs are significantly improved.
TIFI MG™
The most common application of our TIFI® technology utilizes magnesium hydroxide slurry diluted with water and prior to injection. This mixture is sprayed into the combustion unit at locations defined by TIFI® technology computer modeling, to maximize coverage of the problem areas. Such an approach causes the TIFI MG™ solution to react with slag as it is forming and penetrate existing deposits to affect the physical crystal characteristics in areas where this is required. This is also what gives the technology its strong SO3 abatement performance.
The reagent is a specialty chemical slurry with high reactive ability due to its micron sized particles, and large surface area per unit volume ratio. This high activity results in reduced treatment dosages while its high stability eliminates many of the handling and feeding problems associated with unstabilized compounds.
The low dosage levels required for good performance are based on modification of the crystal structure of the slag as it is formed and adheres to tube surfaces. Finished crystal strength is significantly reduced by the penetration of nano-scale particles into the slag, allowing sootblowing to remove the deposits with little difficulty. Atomization takes place in accordance with the results of the Computational Fluid Dynamics model. Chemical feed rates are much lower than stoichiometric requirements, while ash fusion temperatures are unaffected.
TIFI XP™
TIFI XP™ builds upon our TIFI® technology and is specifically designed to provide users both slag control and fuel flexibility in order to burn less-expensive, yet higher-slagging coals such as Illinois Basin (ILB). The TIFI XP™ program utilizes multiple reagents which are optimized to achieve maximum results. TIFI XP™ can also help mitigate corrosion from ILB fuels with high chlorine levels.
TIFI MP™
TIFI MP™ is a furnace chemical injection program using two reagents for the reduction of SO2. A chemical sorbent is injected into the furnace to obtain a consistent and uniform coverage.
With the sorbent properly distributed, the second chemical, TIFI MP™ is injected to "crack" the SO2 molecule within a specified temperature zone. The sorbent is there to absorb the resulting particle, which can be removed by the ESP or baghouse.
TIFI Flux™
TIFI Flux™ is specifically designed for cyclone boilers, especially those burning PRB and other low iron coals. TIFI Flux™ provides greater operating flexibility, lower power settings and avoiding the use of costly kerosene or primitive iron additives to meet the demands of cyclone units.
TIFI BlueCat™
TIFI BlueCat™ builds upon our TIFI® technology by using a copper based product, which acts as both a slag inhibitor and a combustion catalyst. TIFI BlueCat™ can be used to lower carbon monoxide (CO) and unburned carbon (LOI). It can be fed by itself for these purposes, or in combination with TIFI MP™ to provide SO2 trim control, and to enhance capture of heavy metals.
TIFI Hybrid™
This program is designed for oil-fired boilers and uses a combination of TIFI MG™ combined with in-fuel injection of magnesium hydroxide. Our TIFI Hybrid maximizes boiler performance on difficult oil-fired units. Dependent upon your oil quality, TIFI MG, a combustion catalyst or FireShield product may be added to the fuel to further enhance combustion performance.
TCI® Targeted Corrosion Inhibition™ Technology
Designed principally for boilers in the waste-to-energy (WTE) industry.
TCI® technology utilizes established TIFI® Targeted In-Furnace Injection™ technology to inhibit corrosion and slag build-up in a variety of solid- and liquid-fueled boilers.
The TCI® Targeted Corrosion Inhibition™ program represents a unique chemical solution to chloride-induced corrosion of high-temperature surfaces, arising from the burning of plastics and other materials contained in municipal solid waste or refuse derived fuel (RDF). As the waste fuel is combusted, highly corrosive flue gases are generated in the WTE boiler, often resulting in tube failures and unplanned shutdowns. Depending upon the severity of tube corrosion, this condition may necessitate more frequent replacement of superheater pendant tube sections or the use of costly, higher alloyed materials, either to shield metal surfaces or serve as replacement tube material.
Tests conducted at commercial WTE units burning RDF demonstrated a reduction in corrosion rates in excess of 50%, coupled with a simultaneous improvement in slag control. Other potential applications for TCI® technology include biomass and industrial boilers.