Urea Derivatives Preparation TRIZ Cases

Depressurizing the urea synthesis solution generates a gas-liquid mixture heated by decomposed gas in a shell-and-tube exchanger to reduce water consumption.

A steam compressor raises pressure and temperature of condenser vapor to reuse it as a heat source in downstream urea synthesis sections.

Substituted pyrazoles inhibit KDR and Tie2 kinases, reducing tumor growth in cancers with significant vascularization.

Controlling elements in the gas line reduce pressure drop across the urea process ejector, minimizing liquid ammonia motive agent needs.

Controlled thermal decomposition converts urea into biuret, boosting mechanical strength while maintaining feed-grade purity standards.

Relocating density measurement from two-phase reactor outlet to single-phase condensate stream eliminates flow interference for accurate N/C ratio control.

New CO2-stripping synthesis section produces low-ammonia urea solution bypassing high-pressure recovery stages.

A coaxial reactor design uses a submerged liquid passage to transfer crude melamine melt between reaction zones.

One-pot synthesis of urea methacrylates reduces process complexity and byproduct formation through in-situ transesterification.

Reciprocating gas engines power compressors and recover exhaust heat to reduce steam generation, lowering natural gas consumption in ammonia production.

Ionic fluid synthesis of asymmetric urea urethanes eliminates lithium salts and harmful solvents, resolving storage stability and compatibility issues.