Catalyst Regeneration/Reactivation TRIZ Cases
- Diffusive Catalyst Loading on Coal for Methane Gasification
A diffusive catalyst loading process disperses metal ions within the coal matrix through ion-exchange and supercritical fluid treatment.
- Hydrotreating Catalyst Rejuvenation via Citric Acid Impregnation
A hydrotreating catalyst rejuvenation process uses citric acid impregnation to restore metal oxide dispersion and catalytic activity.
- Hydrotreating Catalyst Rejuvenation via Gluconic Acid Treatment
Gluconic acid treatment redisperses hydrogenation metal components on used hydrotreating catalysts to restore catalytic activity.
- MTO Regenerator Multi-Pass Grids for Uniform Catalyst Flow
Horizontal multi-pass grids prevent bubble coalescence and segregation, ensuring uniform catalyst regeneration in deep beds.
- Heavy Oil Catalyst Regeneration via Oxalic Acid Vanadium Removal
Oxalic acid treatment removes vanadium oxide from spent heavy oil catalysts, restoring activity to 95% of fresh levels.
- Dehydrogenation Reactor Shutdown via Reducing Gas Treatment
A dehydrogenation reactor shutdown method introduces a reducing gas during controlled cooling stages to maintain catalyst activity.
- Hydrotreating Catalyst Activation via pH-Adjusted Organic Acid
An alkaline additive adjusts the pH of an organic acid activating solution above 3, mitigating alumina carrier dissolution and restoring metal dispersion.
- Catalyst Sulphurisation via Acid-Organic Emulsion Pre-Treatment
Emulsion pre-treatment enhances sulphurisation degree and reduces catalyst attrition compared to inefficient traditional gaseous processes.
- Group 8-10 Catalyst for Propane Dehydrogenation
A catalyst composition featuring Group 8-10 elements on an alumina support enhances propylene yield during propane dehydrogenation.
- Fluidized Catalyst for Alkane Dehydrogenation
Cyclic combustion and reduction of fluidized catalyst particles maintain activity during alkane upgrading.
- Indirect Catalyst Heating via Flue Gas Tubes
Flue gas flows within heating tubes to heat catalyst streams, avoiding direct fuel contact and preventing catalyst damage from intense heat.
- Fischer Tropsch Catalyst Regeneration via ROR Method
ROR method regenerates Fischer Tropsch catalysts using diluent gases to adjust mole weight, enabling compressor operation at elevated pressures.
- Ethane Oxidative Dehydrogenation CFB Reactor
Fluidized bed reactor with attached regeneration cycles oxygenated catalyst to achieve high ethane conversion and selectivity above flammability limits.
- Hydrodesulfurization Catalyst Regeneration with Group VIb Impregnation
Group VIb metal impregnation on regenerated catalysts restores activity and selectivity while minimizing octane number loss.
- Poisoning Honeycomb Catalyst Regeneration via Microwave and Liquid Nitrogen
Microwave heating followed by liquid nitrogen spraying removes ash and arsenic from poisoned honeycomb catalysts to restore denitration efficiency.
- Antimony Ammoxidation Catalyst Stabilization via Low-Melting Compound
Adding a low-melting antimony compound suppresses vaporization losses, maintaining catalyst stability and acrylonitrile selectivity.
- Doped TiO2 Photocatalyst for Visible Light Absorption
In situ sol-gel doping narrows the band gap of titanium dioxide, enabling effective degradation of toxic compounds under solar illumination.
- Tungsten Catalyst Recovery from Ash via Acid Leaching
Acid leaching removes inorganic contaminants from ash to regenerate tungsten co-catalysts.
- Pd Membrane Fluidized Bed Dry Reforming Reactor
Palladium membranes in a fluidized bed reactor selectively extract hydrogen, shifting equilibrium to enable near-complete conversion at elevated pressures.
- Co-Zn-Al Catalyst for Propane Dehydrogenation
Cobalt and zinc supported on alumina replace noble metals to boost selectivity while eliminating reactor coking.
- Blended Cooling Air Stream for Catalyst Regeneration
Heating the cooling air stream prevents condensation and corrosion in the cooler, preserving heat exchange efficiency.