Urea Derivatives Preparation TRIZ Cases

Nanoscale non-ionic silver particles adsorb onto urease active sites to delay urea hydrolysis, preventing ammonia release and nitrate leaching.

A method recovers urea and polyunsaturated fatty acids from dried complexes by dissolving the material in water to separate the components.

Optimized ferritic-austenitic microstructure reduces weight loss and hole dimension changes in urea plant liquid distributors.

Novel sorafenib derivatives featuring haloalkoxy-phenyl groups inhibit soluble epoxide hydrolase activity.

Thermal insulation and heating elements maintain urea off-gas conduit wall temperature above the isocyanic acid dew point.

Optimizing oxygen feed concentration minimizes inert gas accumulation and reduces equipment costs while maintaining corrosion resistance.

Sequential addition of diamine without intermediate isolation boosts yield while removing purification costs.

Segmented concentrating sections position the final unit adjacent to the prilling tower, cutting ammonia emissions by 50%.

Eliminating high-energy solvent regeneration columns by binding carbon dioxide with ammonia, reducing capital expenditure and energy consumption.

Aerosol water vapor reacts with diisocyanate to prevent solid polyurea formation and minimize material loss.

Incorporating chiral mono-amines into polyurea reduces haze and discoloration while enhancing low shear viscosity.

Phosphacycle ligands coordinate with transition metals, reducing catalyst loading while enhancing reaction rates in bond-forming processes.

Integrating methanol oxidation with vent gas recycling eliminates dedicated production units and reduces capital costs.

Replacing isocyanate groups with ureylene structures resolves selectivity issues, enabling void-free filling of recessed structures.

An adiabatic stripping section removes ammonia from urea solution before thermal decomposition.

Spray mixing amine and isocyanate components eliminates carrier migration, preventing adhesion loss in adhesives and sealants.

Fractionating metallurgical gas yields ammonia and carbon dioxide streams, eliminating raw material waste from separate production processes.

An integrated process synthesizes methanol from shifted synthesis gas and oxidizes it to formaldehyde for urea stabilization.

Fluorine segments and hydrogen bonding in a four-armed oligomeric thickener enhance thermal stability to prevent water-lock damage in tight reservoirs.

Condensing ammonia off-gas into acidic scrubbing liquid recycles reactants, cuts make-up water by half, and lowers steam consumption.

Hydroxyalkyl celluloses replace expensive TPGS-750-M surfactants, improving reaction yields and simplifying separation in aqueous media.

A heating fluid distributor with a distribution plate featuring varying perforation sizes and densities.

A hydraulic energy transfer system uses a turbocharger to minimize pump exposure to corrosive fluids, extending equipment life.

A catalytic process prepares low-viscosity radiation-curable allophanates using hydroxyalkyl acrylates and caprolactone modifiers.

Co-existence of glutathione with an arginine-acidic amino acid salt stabilizes the compound for pharmaceutical and food applications.

Decouple residence time from volume flow in the concentration section to maintain manufacturing precision and prevent biuret accumulation.

Segmenting reactor and stripper pressures reduces energy loss from pressure drops while maintaining high urea yield.

Dual tabs feed the balloon blank through rollers to prevent tearing, while a primer coating ensures uniform ink adhesion on the fragile polymer surface.

Multi-stage scrubbing purifies urea granulate exhaust air using sequential acidic solutions, eliminating external neutralization and corrosion.

RAMALIN compound extraction from Antarctic lichen Ramalina terebrata via solvent separation and liquid chromatography.

A process for producing urea and biuret uses crystallization to concentrate aqueous urea solution.

Cyclic guanidine replaces tin and bismuth catalysts to resolve environmental compliance and cost issues in electrodeposition coatings.

Arc-welded trapezoid modules form an annular channel that eliminates leakage gaps and ensures even urea solution distribution.

A catalytic reactor oxidizes hydrogen and methanol contaminants in carbon dioxide streams to produce purified gas for downstream processing.

A multi-zone urea reactor system integrates reaction and separation functions to optimize conversion efficiency.

Alkali metal catalyst enables catalytic gasification to produce methane-rich synthesis gas at lower temperatures.

Replacing gravity-based circulation with a pump allows horizontal layout, reducing construction costs and increasing production capacity.

Splitting stripper gas into direct and recycled streams maintains reactor heat balance while reducing energy consumption in integrated urea melamine plants.

Placing a heavy vertical submerged condenser below the reactor simplifies installation while extending gas residence time for better ammonia absorption.

A guided wave probe directs radar signals through supercritical fluids to measure boiling liquid levels in corrosive urea synthesis reactors.

Parallel urea production systems utilize stored liquefied ammonia and increased carbon dioxide recovery to maintain synthesis operations.

Amine compounds react with monoisocyanates to form ureas, reducing impurities and avoiding complex separation steps in polyisocyanate manufacturing.

Dissolved urea components in organic solvents prevent crystallization and haze in liquid coatings.

Dipeptidyl ketoamide compounds reduce adipogenesis and triglyceride deposition in adipocytes, addressing adverse side effects from existing obesity treatments.

Pre-reacting recovered carbamate in an additional reactor increases conversion rates and reduces steam consumption in urea synthesis.

Adjusting the steam carbon ratio below 2.6 in urea synthesis reforming steps to optimize gas composition.

Low-pressure urea recovery section decomposes aqueous solution, reducing condensation water volume and energy consumption while maintaining conversion yield.

Zinc catalysts enable allophanation of hexamethylene diisocyanate prepolymers at moderate temperatures, avoiding high heat requirements.