Lactams Preparation TRIZ Cases

Ammonium phosphate salts enable reactive distillation of polyamide resin to raise cyclic lactam yield while simplifying purification and cutting energy use.

Three-phase evaporative crystallization separates organic impurities into an oily phase, improving ammonium sulfate purity and yield with lower energy use.

Salt-solution amorphization converts semi-crystalline polyamides into a stable amorphous state, enabling lower-energy depolymerization for recycling.

Depolymerization, solvent extraction, and crystallization recover high-purity ε-caprolactam from nylon 6 fishing nets with lower waste and carbon footprint.

A one-pot ammonolysis and cyclodeamination route converts nylon 6 waste into ε-caprolactam at high yield while supporting scalable recycling.

Reaction heat from Beckmann rearrangement is reused for ammonium sulfate crystallization, cutting steam demand, fouling risk, and carbon footprint.

Pre-concentration, depolymerization, extraction, and crystallization recover high-purity ε-caprolactam from low- to medium-content nylon 6 blends.

Organic-solvent extraction and distillation refine depolymerized fishing-net material into high-purity epsilon-caprolactam for high-speed melt spinning.

Polyol dissolution removes reinforcing fibers before coagulation and hydrolysis, helping recycle PA6 composites into high-quality ε-caprolactam.

Controlled depolymerization, extraction, and crystallization recover high-purity ε-caprolactam from nylon 6 fishing nets while reducing waste and carbon footprint.

Superheated water converts polyamide 6 resin waste into high-purity ε-caprolactam for resin production while reducing energy use and emissions.

Hierarchical pores and stabilized titanium-silicalite centers improve oxime conversion, caprolactam selectivity, and catalyst life.

Selective dissolution and staged purification recover high-purity ε-caprolactam and polyurethane.

This case uses heated water and solid-liquid separation to recover ε-caprolactam and polyamide 6 oligomer in high yield while reducing energy use.

Hierarchical all-silica pores support caprolactam selectivity and longer catalyst life by easing diffusion and reducing carbon blockage.

A four-section process separates, depolymerizes, recovers, and purifies caprolactam from low-content Nylon 6 films with lower carbon impact.

Cyanuric chloride and zinc chloride enable high-purity laurolactam for polymerization.

This case uses evaporation, condensation, and vapor recycling to reduce water use and CO2 emissions in polyamide 6 depolymerization.

This case uses water, heat exchange, and stream recycling to depolymerize polyamide 6 with lower energy use and CO2 emissions.

Specific aromatic catalysts with halogen co-catalysts enable high-yield amide production without ammonium sulfate by-products.

Shock wave compression in a supersonic flow reactor converts methane to acetylene, reducing energy consumption while maintaining high product purity.

Converting the hydrochloride salt to a citrate salt eliminates polymorphism and hygroscopicity, ensuring batch-to-batch consistency.

A power supply device channels refrigerant through a heat transfer route to cool control circuits.

A Beckmann rearrangement process stabilizes the catalyst through controlled solvent recycling to produce high purity amide compounds.

Zeolite catalyst modified with magnesium maintains high catalytic activity during gas-phase Beckmann rearrangement of cyclohexanone oxime.

Inverting the aqueous continuous phase reduces caprolactam loss while maintaining high washing performance at low feed ratios.

A photoirradiation device uses a liquid phase with a specific refractive index to minimize light reflection at container interfaces.

A cyclohexyl ester hydrogenation process co-produces cyclohexanol and alkanol using specific catalysts.

Silicoaluminophosphate catalysts convert oximes to lactams via acid catalysis, avoiding ammonium sulfate byproducts from traditional sulfuric acid methods.

Replacing biological fermentation with catalytic hydrogenation of renewable HMF improves conversion rates and reduces ecological footprint.

Composite catalyst suppresses side reactions during adipamide conversion, increasing epsilon-caprolactam yield and reducing by-product formation.