Co-feeding sulfolane into transalkylation reactors suppresses co-boiler formation, eliminating the need for intermediate solvent extraction steps.
Axial methanol injection distributors prevent catalyst settling and velocity gradients to increase xylene isomer yield.
Segmenting zeolite X crystallites reduces internal diffusion paths, resolving mass transfer bottlenecks during low-temperature para-xylene separation.
Low-temperature operation suppresses oligomerization to boost propylene selectivity and reduce by-products.
Hydrotreating heavy oil feedstocks removes impurities before fractionating the stream into distinct boiling point ranges for downstream processing.
Integrates non-oxidative and oxidative dehydrogenation units with extractive solvent columns to separate butenes and butadiene streams efficiently.
Thermal treatment of natural oils decomposes peroxide poisons, restoring catalyst efficiency and consistent conversion rates.
A process converts triglycerides into linear alkylbenzenes using selective cracking and dehydrogenation steps.
Maintain aromatic-to-olefin molar ratios via effluent recycling to suppress olefin oligomerization and limit heavy hydrocarbon formation.
Integrating olefin cracking with alkylation to boost alkylate yields and reduce aromatic content in gasoline blending.
A zeolite adsorption process with a dedicated C9 removal unit prevents desorbent accumulation, enabling efficient para-xylene recovery from mixed feedstocks.
Direct electrical heating eliminates complex steam networks and reduces energy consumption by 62% in remote natural gas processing.
Segmented piping with strategic orifice placement reduces thermodynamic losses in dehydrogenation reactors.
Low iron refractory linings prevent catalytic coke formation and metal dusting, extending reactor lifespan in paraxylene production.
A unified treatment zone removes nitrogen and unsaturated aliphatic compounds from aromatic feed streams using selective adsorbents.
A continuous flow process produces tri-cyclopentadiene by separating and recycling unreacted cyclopentadiene streams.
X-ray fluorescence measures sulfur content in aqueous fluids, replacing complex combustion analysis to optimize scavenger dosing rates.
Routes regenerated catalyst stream back into the alkylation reactor to reduce fresh benzene consumption and lower energy requirements.
A method prepares deuterated anthracene compounds by reacting a precursor with a metal catalyst and deuterium source to form an intermediate.
Composite zeolite and activated carbon particles eliminate oxygenated impurities to below 10 ppm, resolving selectivity constraints in metathesis purification.
Circulating catalyst regenerates coke buildup during propane dehydrogenation, reducing energy costs and process complexity.
MCM-22 catalyst enables ethylation of benzene feedstocks containing coboilers, achieving 99.50% purity without extraction.
Copper oxide catalysts reduce phosphorus in liquid hydrocarbons at room temperature, simplifying processing and lowering costs.
An integrated regeneration gas system recovers and reheats hot gas to preheat hydrocarbon feed, eliminating separate heating equipment.
Flexible hinge joints accommodate vertical and horizontal thermal expansion while reducing mechanical stress and vibration.
C6-C18 hydrocarbons absorb and store heat from exothermic reactions through phase change, eliminating the need for external cooling equipment.
Interstage product removal via a diverter prevents over-conversion in multi-bed oxygenate reactors, raising propylene yield.
Quenching hot paraffin dehydrogenation effluent with recycled product stream prevents non-selective cracking and improves propylene yield.
Oxidative dehydrogenation using metal oxide agents reduces energy consumption and greenhouse gas emissions compared to traditional steam cracking.
A non-flashing liquid quench stream controls reactor temperature in renewable feedstock hydroconversion processes.
Segmented adsorbers operate in series or parallel modes to maintain high purity para-xylene output while varying feed flow rates.
Segmented pre-polymer synthesis controls polysulfide polarity, reducing salt by-products while maintaining chemical resistance.
Variable recycle ratios in downstream alkylation stages reduce dialkyl byproduct formation and lower distillation energy costs.
Segments separation into distinct temperature-controlled stages to resolve heating issues and reduce device complexity while maximizing butadiene recovery.
Embedded fluidized bed reactors supply reaction heat via internal combustion to prevent thermal breakdown of light alkanes.
Quaternary-substituted alkylaromatic compositions enhance additive solubilizing properties through acidic alkylation of vinylidene olefins.
Porous hydrophobic PEEK membranes replace energy-intensive cryogenic distillation by separating olefins from paraffins through molecular size exclusion.
Direct deep hydrotreatment of waste oils with nickel-molybdenum catalysts removes aromatic impurities and meets ASTM D2008 specifications without yield losses.
UZM-37 zeolite catalyst achieves high ethylbenzene selectivity across varying benzene to olefin molar ratios, reducing side product formation.
Y zeolite adsorption isolates para-xylene while distillation removes accumulating C9 aromatics to enable economical desorbent recycling.
A C3/C4 separation stage with a full-pressure absorber and depropanizer streamlines olefin processing.
Graded catalyst capacity along the reactor length minimizes thermal runaway risk while maintaining high ethylene yield.