Catalytic Cracking TRIZ Cases

Segregating light and heavy feeds into independent risers resolves heat balance constraints while boosting olefin production.

A hydrocracking catalyst uses a carbonaceous substance to balance activity and suppress excessive cracking.

Introducing carbon monoxide into the riser reactor reduces sulfur content by over 50% without hydrotreating capital costs or octane loss.

A supported chromium II catalyst converts alkane reactants into lower and higher molecular weight aliphatic hydrocarbons.

Passing electric current through conductive particles heats the fluidized bed to 500-850°C for catalytic cracking.

Magnesium-modified ultra-stable rare earth Y zeolite resolves ammonium nitrogen pollution by replacing conventional salts with dispersing pre-exchange.

Magnesium-aluminum mixed metal oxide additives capture iron, nickel, and vanadium to protect fluid catalytic cracking catalysts from deactivation.

Oligomerization system with FCC zone cracks distillate to propylene using controlled branching and boiling points.

Converts FCC olefins to heavier compounds via oligomerization, resolving separation difficulty from refractory paraffins in recycle streams.

Reducing excess oxygen to 0.5 mol-% while maintaining plenum temperatures above 730°C limits thermal NOx generation during coke combustion.

High conductivity annulus filling maintains shell temperature above sulfuric acid dew point to prevent corrosion.

Modified zeolite beta addresses dealuminization instability by incorporating phosphorus and transition metals to improve catalytic cracking performance.

High silica USY zeolite with cerium oxide increases light olefin yields to 50 wt% despite complex catalyst preparation.

Vacuum loader transfers catalyst into fluidized catalytic cracking units, reducing storage footprint and contamination risks.

A catalyst withdrawal apparatus regulates inventory in fluid catalytic cracking units using a flow control circuit and heat exchanger.

A single-stage polyol hydrothermal process modifies Faujasite Y zeolites to reduce sodium content and create mesoporous structures.

Distillation without a reboiler improves liquid hydrocarbon yield and quality for chemical cracking furnaces.

Catalyst recirculation eliminates platinum promoters to reduce NOx emissions while ensuring complete CO combustion.

A flow director narrows the transition cross section to maintain consistent gas residence times during scale up.

A diolefin hydrogenation reactor selectively converts diolefins in cracked naphtha to monoolefins before fractionation.

A homogeneous aqueous catalyst promotes water splitting at moderate pressures to upgrade heavy hydrocarbons.

Delimiting tab on metal anchoring element prevents interstices and gas infiltration in fluid catalytic cracking units.

Boron oxide additives passivate nickel and vanadium contaminants in fluid catalytic cracking catalysts, lowering hydrogen and coke yields from resid feeds.

Solid acid catalysts structurally isomerize waste plastic pyrolysis oil to produce lubricating base oils with improved low-temperature properties.

Segmented cyclones reduce residence time and erosion while maintaining 99.8% separation efficiency.

Segmented dual reactor risers with distinct catalyst compositions maximize propylene yield while suppressing dry gas formation.

A baffle directs stripped hydrocarbon vapors into an isolated evacuation passage within the stripping section.

Segmented dense phase riser reactors minimize back mixing and thermal cracking to maximize light olefins yield from naphtha feed.

A fluidized bed reactor uses electrically conductive particles to generate heat directly within the reaction medium.

Slide apparatuses transport catalyst particles laterally in fluidized beds, reducing stagnation and improving combustion efficiency.

Separating reactor and separator sections via a riser reduces mechanical stress at intersection points under high catalyst loads.

Reacting oxygen-containing regenerated catalyst with a fuel source eliminates nitrogen stripping costs and prevents feedstock degradation.

A composite model combines multiple regression models to predict process behavior and detect deviations from normal operation.

Moving supports allow horizontal pipe movement to accommodate thermal expansion, reducing stress and construction costs.

A slurry separator uses a moving blade to wipe oil onto a wall, generating a thin film that separates recovered oil from residue.

Feeds a biomass slurry into an FCC riser for simultaneous pyrolysis and upgrading, resolving storage instability and catalyst damage.

A two-stage regenerator uses swirl ducts to separate partially regenerated catalyst from flue gas in the upper chamber.

Integrating a dehydrogenation zone with fractionation boosts propylene yields while preventing rapid catalyst coking and degradation.

Injecting fuel gas with steam into the catalyst stripping zone enhances heat duty for the regeneration zone.

Co-feeding crude lignin oil with methanol in fluid catalytic cracking units increases the hydrogen-to-carbon ratio of the feedstock.

Co-processing biomass liquids with hydrocarbon feeds in a fluid catalytic cracking riser reduces oxygen content while minimizing hydrogen consumption.

Advanced regulatory controller adjusts fuel oil flow to stabilize regenerator bed temperature in catalytic olefins units.

Ion exchange to ammonium form with water vapor and acid treatment raises the Si/Al ratio while preserving crystal structure stability.

A two-stage hydrodesulfurization process reduces mercaptan content in gasoline using variable hydrogen-to-hydrocarbon ratios.

Segmented effluent recycling controls hydrogen partial pressure in moving bed reactors, reducing coke formation and catalyst deactivation.

A concentric tube nozzle directs liquid feed through annular spaces to control velocity and temperature profiles.

Replacing control valves with turbines recovers wasted energy, though slower response times require dynamic adjustment.

A cleaning head scrapes deposits from the pyrolysis oil feed line outlet, preventing clogging and enabling uninterrupted fluid catalytic cracking.

Dense and sparse guide plate channels create localized velocity gradients that lift catalyst particles, resolving uneven distribution in fluidized bed reactors.