Urea Derivatives Preparation TRIZ Cases

Converting nitrate waste into urea via electrocatalysis, resolving the trade-off between denitration efficiency and resource loss.

Steam heating maintains condenser temperatures above the sulfur melting point, preventing solid deposition and eliminating cleaning downtime.

Crosslinked ion exchange resin removes ammonia to extend shelf-life and prevent corrosion.

An osmotic engine generates energy from draw solution gradients to produce ammonium carbonate.

Liquid acid catalysts replace corrosive hydrogen chloride gas, eliminating equipment damage during esterification.

Localized production eliminates shipping costs and plastic waste by generating fresh diesel exhaust fluid on-site through urea dissolution.

Ammonia and inert gas prevent hydrolysis, improving selectivity for monosubstituted amino compounds.

Segmented condensation recovers ammonia and carbon dioxide while preventing temperature depression that reduces stripping efficiency.

Spouted bed granulator separates gas and liquid introduction points to prevent agglomeration while maintaining homogeneous structure.

Cobalt and chromium organometallic catalysts transform monoisocyanates into ureas, eliminating monoamine by-products and enabling solvent stream recycling.

Ethanolamine-functional compounds react with amine-functional compounds using a carbon oxide delivering agent to synthesize higher ethylene amines.

An aromatic amine derivative transports holes and electrons through organic thin film layers.

Screened prills seed granules to boost mechanical strength while lowering device complexity.

Propargyl-substituted KCNQ agonists improve brain distribution while reducing neurotoxicity compared to retigabine.

Pre-cooling off-gas below 45°C enhances particle growth in venturi scrubbers, reducing pressure drop and energy consumption during urea dust removal.

Multiple urea inputs distribute varying additive concentrations along a longitudinal growth path in a fluidized bed.

Converts petcoke waste and CO2 emissions into valuable methanol and ammonia co-products, eliminating hydrocarbon yield losses in bitumen upgrading.

Thermal decomposition of N-substituted carbamate in an aprotic solvent yields isocyanate compounds.

Two-stage controlled combustion removes ammonia from urea plant vent gas while minimizing nitric oxide formation and eliminating external fuel needs.

Density and viscosity measurements determine aqueous ammonium carbamate composition, preventing ammonia loss during water reduction.

Thermolatent tertiary amine adducts resolve the contradiction between long pot life and rapid curing speed in isocyanate trimerization.

An intermediate pressure section decomposes carbamate in urea solution, alleviating downstream bottlenecks and increasing production capacity.

Selective perforated baffles enhance heat and mass transfer to increase urea conversion yields while reducing downstream separation complexity.

Octahydroanthracene compounds clear amyloid plaques while bypassing blood-brain barrier permeability limits and minimizing systemic toxicity.

An integrated process synthesizes formaldehyde from methanol to stabilize urea streams within a co-production facility.

Cooling liquid ammonia at synthesis pressure separates inert gases, eliminating re-pressurization energy loss.

Covalent bonding via allophanate and carbamate groups resolves compatibility issues between stabilizers and curable oligomers.

One-pot reaction using an indium-based ionic liquid catalyst to prepare disubstituted urea and carbamate compounds simultaneously.

Injecting liquid ammonia downstream of recovery sections shifts chemical equilibrium to reduce biuret, maintaining quality at reduced plant capacity.

Liquid carbon dioxide feed eliminates multi-stage compressor energy consumption while improving reactant mixing in the urea synthesis reactor.

Replacing costly natural vitamin E with synthetic tocopherol derivatives, TPGS-M-PEG-750 achieves high yields while eliminating organic solvents.

A fuel cell polygeneration process produces ammonia using hydrogen and carbon dioxide byproducts from the electrochemical stack.

SCT-CPO reactor produces high-purity carbon dioxide for urea synthesis, avoiding amine degradation from flue gas oxygen.

An integrated flameless oxy-combustion unit generates pure carbon dioxide and steam, resolving energy consumption bottlenecks in urea production.

A baffle-free vertical shell zone enables continuous condensate drainage in urea strippers.

A separating agent introduces specific chemical groups on its surface to condense with amino acid substrates and form amide linkages.

Blends green and blue hydrogen to reduce carbon dioxide emissions in ammonia production while managing costs.

Alternative O-methylation prevents racemization and ester formation during lacosamide synthesis, achieving yields above 85%.

Parallel reactors at distinct pressures resolve energy inefficiencies by optimizing urea conversion yields and steam production.

Downstream exhaust fans create vacuum suction for fluidization, eliminating blower heat generation and reducing energy consumption.

Allophanate polyisocyanates resolve the contradiction between high functionality and low viscosity, enabling easy paint incorporation.

Converts refuse into synthesis gas via cryogenic oxygen to produce urea, reducing environmental pollution from traditional natural gas feedstocks.

Flash drums remove uncondensed gases before rectification, preventing incrustation and stabilizing liquid levels in ammonia recovery columns.

Gas turbine drives the CO2 compressor while exhaust heat generates process steam for the high-pressure stripper.

Super-ferritic steel with 23% chromium replaces duplex grades, eliminating oxygen passivation to cut costs and boost corrosion resistance.