Distillation Purification/Separation TRIZ Cases

A hydroxylamine and stable free radical blend inhibits vinyl aromatic monomer polymerization during elevated temperature processing.

Merging renewable natural oils with kerosene feedstocks maintains C10 content specifications while reducing fossil fuel dependency in alkylbenzene synthesis.

Dividing wall column separates C4 fractions before extractive distillation yields pure 1,3-butadiene.

Separating alkylated naphthalene mixtures into distinct fractions allows precise viscosity and volatility control without complex parallel synthesis lines.

Diamondoid fuels use cage structures with allyl groups to increase volumetric net heat of combustion beyond conventional jet fuel limits.

Segmented fractionation columns isolate C8 aromatics from hydrocarbon streams using sidedraw withdrawal and bottom fraction processing.

A polyalkylate distillation column operates with a reduced pressure gradient to separate diisopropylbenzene and triisopropylbenzene.

Separating monomer dissolution from the reaction zone extracts heat outside the reactor, reducing refrigerant consumption in alpha-olefin production.

Recycling solvent-rich stream to lower column section reduces C8 naphthenic impurities and benzene loss in full-range feedstock processing.

A divided-wall column segments distillation to remove close boiling impurities from styrene while reducing energy consumption.

Hydroprocessing removes impurities while film evaporators minimize coke formation, preventing catalyst deactivation.

Multi-column solvent absorption and steam stripping remove water vapor, carbon dioxide, and bio-byproducts to yield high-purity isoprene for polymerization.

Multistage catalytic cracking converts naphtha to light paraffins while aromatics recycle manages exothermic heat duty, reducing production costs.

Azide-alkyne cycloaddition converts acetylenes into separable triazoles, eliminating extractive distillation solvent volumes and explosion risks.

Selective hydrogenation removes acetylenes from crude C4 streams, enabling high-purity 1,3-butadiene recovery with a single extractive distillation column.

Combines MTO and pyrolysis units to decouple compression requirements, maximizing ethylene and propylene yields without expanding compressor capacity.

Fractionate hydrocarbon streams to concentrate ionic liquid droplets, eliminating coalescing materials and reducing process costs.

Selective activated carbon adsorption removes carcinogenic benzene impurities from norbornadiene, overcoming close boiling point separation limits.

N,N'-diformyl piperazine and N-formyl morpholine solvent blend isolates benzene, toluene, and xylene from gasoline reformate fractions.

Liquid ring compressor reduces capital costs and fouling risks in butadiene extraction.

Polar solvent extraction and molecular sieve adsorption remove impurities from recycled benzene, extending zeolite catalyst life in vinyl aromatic production.

Combining absorber and desorber columns eliminates pumps and reduces space requirements while maintaining butene separation performance.

A multi-unit process converts bio ethanol to high purity isobutene through sequential dehydration, dimerization, skeletal isomerization, and catalytic separation steps.

Evaporating a 1,3-butanediol and water mixture enables direct catalytic dehydration to produce 1,3-butadiene while reducing energy consumption.

Thin film evaporator separates by-product solvent from polymeric deposits, eliminating external cleaning solvents and reducing reactor downtime.

Integrated dehydrogenation converts raffinate butanes to butenes for 1,3-butadiene extraction, overcoming feedstock availability limits.

Optimizing the recycle-to-feed ratio during isobutene oligomerization increases 2,4,4-trimethylpent-1-ene selectivity above 75 mol%.

Hydrofining and divided wall columns eliminate solvent contamination, reducing energy consumption and maintaining unit reliability.

A desorbent flush stream removes residual fluid from intermediate transfer lines in simulated moving bed adsorption systems.

A distillation column side draw extracts heavy hydrocarbons from unreacted streams to maintain polymer quality.

Butadiene extraction system operates at high and low pressures using minimal capital investment.

Low-oxygen water washing removes active hydrogen impurities from 1,3-butadiene to suppress popcorn formation during anionic polymerization.

Merges multiple heat transfer functions into a single unit to maximize energy recovery while reducing plant engineering complexity.

Hydrogen presence prevents disulfide formation during adsorption, extending sorbent life and eliminating carcinogenic material requirements.

Selective hydrogenation removes oxygenates and simplifies separation, increasing butadiene yield.

Liquid-liquid extraction removes styrene polymers from rich solvent using water, avoiding steam stripping limitations.

Cracking glycol ether yields high-purity isobutene via reactive distillation, eliminating byproducts that deactivate catalysts.

Oxygenate removal zone extracts light oxygenates from distillation products using adsorbents to protect downstream catalysts.

An oxidative dehydrogenation complex integrates an oxygen separation module to recycle enriched gas back into the reactor system.

Operating the de-ethenizer below 350 psig reduces energy consumption while maintaining separation efficiency through optimized fractional distillation.

Adsorptive separation units paired with a split fractionating column isolate para-xylene from mixed isomer streams.

A dividing wall column separates solvent and linear alpha olefins in a single unit.

A method feeds ethane-rich gas into a reactor for steam cracking, then separates the product mixture to yield high-purity ethylene.

Sidedraw tower separation with partial condensation recycles naphthenes, cutting energy consumption below 60% of traditional methods.

Merges multiple process streams into a unified network to cut energy consumption by 48 percent while maintaining high-purity ethylene production.

A purified propane feed stream stabilizes catalyst activity and reactor yields during gas-phase ethylene polymerization.

Zeolite adsorbents remove chlorides from hydrocarbon streams, preventing heavy oil buildup and corrosion.