Halogenated Hydrocarbon Separation/Purification TRIZ Cases
- Method for producing hydraulic medium including difluoroethylene
See how controlled mixing at 65 mol% or less prevents difluoroethylene self-decomposition and d
- Phenol-Stabilized Fluoroolefins for Oxidation and Thermal Stability
Phenolic stabilizers help fluoroolefins resist oxidation and extreme-temperature degradation in refrigeration and heat-transfer uses.
- HFO-1225ye Azeotropic Composition for Stable Purification
Azeotropic HFO-1225ye mixtures with water and halocarbon or HF impurities resist fractionation, enabling cleaner distillation and recovery.
- Plasma Pyrolysis of Waste PTFE for Selective Tetrafluoromethane Production
Plasma pyrolysis converts waste PTFE into tetrafluoromethane, then quenching and gas-solid separation simplify recovery while limiting blockage.
- Iodofluoroalkane Production via Anhydrous Fluoroolefin Reaction
Anhydrous fluoroolefins react with hydrogen iodide to form iodofluoroalkanes, reducing corrosion and environmental impact.
- Halogen-Substituted Styrene Monomer Synthesis via Phosphoric Acid Catalysis
Excess phosphoric acid drives efficient halogenated styrene monomer production, lowering costs while maintaining thermal stability.
- Tetrachlorohexafluorobutane Purification via High-Plate Distillation
High-plate distillation separates hydrogen-containing impurities from fluorinated products to resolve pseudo azeotrope mixtures.
- Multi-Stage Fluorinated Alkane Hydrogenation Selectivity
Segmenting hydrogenation across stages manages reactor temperature to resolve the trade-off between conversion rate and selectivity.
- Stabilizing HCFO-1233zdE Isomerization with Volatile Alkenes
Low-boiling alkenes migrate through vapor compression systems to stop HCFO-1233zdE isomerization, avoiding evaporator concentration.
- Separating HCFC-1233 from HF via Liquid Phase Split
Chilled liquid phase separation isolates monochloro-trifluoropropenes from hydrogen fluoride streams.
- HCFC-244bb and HF Azeotrope for HFO-1234yf Production
HCFC-244bb and HF azeotrope simplifies purification by lowering energy consumption during distillation for HFO-1234yf synthesis.
- R-1234yf Purification via Azeotropic Distillation
Intermediary substances form azeotropes to separate R-1234yf from close-boiling byproducts, achieving high purity.
- HCFO-1233zd Drying via Azeotropic Distillation
Azeotropic distillation separates water from HCFO-1233zd, reducing desiccant consumption and equipment size.
- HFO-1234ze(E) Water Azeotrope for Refrigerant Purification
Stable HFO-1234ze(E) and water azeotropes resolve ozone depletion risks from legacy CFCs while enabling effective impurity separation via distillation.
- Separating HCFC-1233 from HF via Liquid-Liquid Phase Split
Cooling the azeotrope triggers liquid-liquid phase separation, reducing distillation load to isolate pure 1233zd despite similar boiling points.
- Azeotropic Distillation Separates HF from Fluoroolefins
Condensing azeotropic vapor creates distinct liquid layers, eliminating aqueous scrubbing waste while recovering pure hydrogen fluoride.
- Azeotropic Distillation for HF and Fluoroolefin Separation
Azeotropic distillation separates hydrogen fluoride from fluoroolefins via condensation into two liquid phases, reducing waste from aqueous scrubbing.
- HCFO Refrigerant Purification via Low-Temperature Neutralization
A low-temperature base reaction removes hydrofluoric acid from crude refrigerant streams while preserving the desired product yield.
- Selective Olefin Purification via Terminal CF2 Group Reaction
A selective removal agent reacts with terminal CF2 olefins to form higher boiling addition compounds.