Urea Derivatives Preparation TRIZ Cases

See how supercritical CO₂ dissolves biodegradable polymers for fertilizer coating, eliminating

See how covalent grafting of phytic acid and urea onto lignocellulosic fibers creates bio-sourc

See how microbial urea synthesis and hydrolysis replace energy-intensive ammonia production, en

See how a photo-induced compound forms stable chemical bonds with fiber surfaces to deliver dur

See how molten salt thermal storage and water electrolysis enable continuous ammonia synthesis

See how parallel autothermal and steam methane reformers optimize CO2 balance for simultaneous

See how sulfonated fluorinated and non-fluorinated urethanes balance repellency effectiveness w

Parallel ATR and SMR reforming balances CO2 and syngas flows for ammonia, urea, and methanol co-production with lower plant cost.

Reinforcement learning adjusts plasma gasification settings in real time to improve waste-to-fuel recovery efficiency across varied feed streams.

A two-part urea plant valve uses duplex stainless steel only on the inner body to resist carbamate corrosion and simplify heat treatment.

Using low-partial-pressure CO2, this case forms carbamic acid salts and converts them to esters or urea derivatives without alkyl halides.

Continuous vibrating density measurement replaces hazardous urea-stream sampling to calculate N/C and H/C ratios in real time.

A stand-alone melamine process converts off-gas back into urea, cutting energy use and avoiding disruption or revamping of the urea plant.

By shifting condensation from basic to acidic stages, this case avoids HWIN formation and delivers 100% water-soluble nitrogen for steady fertilization.

Pre-heated ammonia in a two-zone pipe reactor prevents urea crystallization, lowering viscosity and pressure for stable continuous production.

Cone-shaped cationic lipids with hydroxyl heads and degradable ester bonds improve mRNA LNP stability, biocompatibility, and in vivo delivery.

A single-stage urea melt scrubber cools recirculated melt above 165°C to prevent cyanurate precipitation, reduce corrosion, and purify melamine offgas.

Upstream separation of two-phase urea solution cuts pre-decomposer and condenser load, reducing water recycle and steam use.

A dedicated urea plant converts melamine offgas into high-purity urea, avoiding existing plant revamps, downtime, and yield loss from water.

Routing DEF purification condensate to LP dissociation removes ammonia, recovers water, and keeps diesel exhaust fluid within purity limits.

Low-temperature condensation forms ammonium carbamate crystals for melt recycle, cutting medium-pressure urea recovery cost and complexity.

Precisely balanced Cr, Ni, Mo, W, and N levels cut passive corrosion at high temperature while stabilizing duplex steel for urea plant tubes.

Directly purifying geologic hydrogen with PSA, membranes, and cryogenic separation cuts carbon intensity while producing usable hydrogen and noble gases.

Lowering melamine off-gas pressure before urea-side condensation prevents pressure swings and cuts energy use in integrated production.

Urea added to calcium chloride speeds brine formation and suppresses recrystallization, reducing clogging and leakage in dehumidifiers.

A high-pressure carbamate condenser heats MP urea solution to decompose carbamate, cutting biuret formation while improving energy use.

Tube-side process flow in a separate condenser simplifies welding and maintenance while preserving fast urea synthesis in staged reactors.

A permanently polarised hydroxyapatite catalyst enables selective urea synthesis from CO2 and NH3 under mild temperature and pressure.

Recovering hydrogen-rich methanol purge gas into the autothermal reformer improves co-production efficiency and cuts added unit complexity.

Smaller continuous urea reactors with heat exchange and pressure control improve heat transfer, prevent runaway, and keep product quality stable.

Combining evaporation condensate with a second urea stream recovers entrained urea and forms low-alkalinity dilute solution suitable for DEF.

Spiro urea compounds reduce hydrophobicity while preserving MmpL3 and EpH inhibition against MDR-TB and XDR-TB strains.

High-pressure melamine off-gas condensation recovers carbamate while limiting water to the urea synthesis section and cutting wastewater energy use.

Protected groups stabilize polyurea acrylate photo-curing resins during synthesis and storage, then enable post-curing network tuning.

Electric heating turns water in urea solution into steam for hydrolysis, cutting fossil-fuel steam demand and CO2 emissions.

Continuous chromatography and cooling crystallization purify fermentation-derived L-citrulline without organic solvents, preserving yield.

A urea-saturated leaching solution removes biuret from solid urea, enabling low-biuret production in evaporation-based plants.