Sulfur Compounds TRIZ Cases

High-valence cation and anion doping with a selenium surface layer stabilizes nickel-rich cathodes, limiting oxygen release and interface degradation.

High-valence cation and anion doping plus selenium and conductive coatings stabilize nickel-rich cathodes and curb oxygen release and side reactions.

A solvent-free low-temperature route uses mechanochemical, vacuum, or electron-beam activation to raise crystallinity and room-temperature ionic conductivity.

Iodine doping in an SO2-based inorganic electrolyte forms a protective lithium interface that suppresses dendrites and lowers overvoltage.

A carbon nanostructure and iron oxyhydroxynitrate coating boosts sulfur cathode conductivity and adsorbs polysulfides to improve discharge stability.

Organic molecules bond to sulfur particle surfaces to improve polar dispersibility, suppress polysulfides, and stabilize Li-S electrode capacity.

Carbon nanostructures and iron oxyhydroxynitrate raise cathode conductivity and adsorb polysulfides, improving Li-S battery capacity and stability.

Water vapor injection upstream of SO3 absorption boosts steam recovery while keeping sulfuric acid mist and corrosion under control.

Synchronized converter heating keeps the catalyst at 200-250°C during SO2 pauses, preventing degradation and avoiding frequent line blowing.

Wet sulfur-bearing feed and 22-40% oxygen produce dilute sulfuric acid without drying towers, cutting cost and NOx emissions.

Acid treatment purifies phosphogypsum and recycles P2O5-bearing liquor to raise phosphorus yield and produce cement-grade calcium sulfate.

Pure oxygen in the reduction chamber boosts spent acid regeneration capacity while limiting pressure drop, NOx swings, and unstable combustion.

Water tube inter-bed boilers with bypass mixing recover heat and control catalyst inlet temperature without costly steam superheaters.

Acid purification and P2O5 liquor recycling remove phosphogypsum impurities while raising phosphorus yield and producing clinker-grade calcium sulfate.

Atmospheric plasma coats sulphur particles with conductive layers to improve Li-S transport, limit shuttling, and extend cycle life.

Existing sulfurous acid generators convert 60% or less of sulfur; secondary burning and venturi mixing raise conversion above 90%.

Oxygen-enriched oxidation stabilizes sulfur dioxide production, reducing inert nitrogen, energy use, and plant volume in sulfuric acid recovery.

This sulphuric acid process uses staged oxygen addition to protect catalyst integrity while reducing plant size and SO2 emissions.

Magnesium-mediated conversion recovers calcium oxide and sulfuric acid with lower CO2 emissions.

Substoichiometric first-stage burning followed by post-combustion minimizes nitrogen oxide formation while maintaining high sulfur dioxide yields.

Circulating process gases through a heating stage maintains catalyst activation temperature during production stops.

Vanadium oxide and platinum catalyst zones achieve high conversion efficiency while reducing system complexity and capital costs.

Recycling outlet gas dilutes reactants to absorb exothermic heat, reducing reactor overheating and equipment size.

Stable alkaline hydroxonium ion complexes maintain charge balance and prevent reactive properties in aqueous solutions.

Extruding a catalyst precursor through an overlapping ring die creates a segmented structure that increases surface area while maintaining low pressure drop.

Combines SNOX processes with sulphuric acid production to recycle off gases, eliminating costly glass equipment and reducing emissions.

A radiant waste heat boiler recovers thermal energy from process gas using membrane walls.

Segmenting the intermediate absorber into pre and post stages with distinct acid temperatures prevents hydraulic flooding and reduces mist formation.

Ultra-large-pore silica stabilizes diatomite pore uniformity, resolving active component dispersibility issues in SO2 conversion.

Internal devices like sieve trays enhance turbulence and mass transfer, reducing sulfur trioxide slippage and improving energy recovery.

Controlling sodium sulfide absorbance stabilizes polythiol synthesis for transparent molded products.

Recycling acid through a heated loop in the concentrator column overcomes ISAC capacity limits to reach 98 wt% concentration.

Alkali washing removes sulfur impurities from activated carbon, preventing hydrogen sulfide generation during electrowinning.

Elevating absorption acid temperature to 200°C enables high-pressure steam generation from boiler feed water, recovering up to 97% of the heat of absorption.

Tubular contact apparatus oxidizes SO2 to SO3 without prior gas drying, eliminating energy-intensive acid condensation.

Heated grinding and ultrasound mix components before dispensing, preventing separation of substances with different specific weights.

Double-walled tubular contactor prevents catalyst hot spots and damage during high-concentration SO2 oxidation.

Micro-porous carbon nanosheets confine sulfur molecules within their sub-nanometer pores, inhibiting polysulfide dissolution and improving cyclic stability.

Integrated absorption tower recovers 95% reaction heat as steam, reducing equipment complexity and operational costs.

Fluidized preheating and low-oxygen reduction of purified phosphogypsum yield sulfur dioxide for acid production while the residue sinters into cement clinker.

Metal-doped iron sulfide cathodes reduce resistivity and increase lithium ion transport efficiency to extend discharge service life in primary cells.

Water-tube waste heat boilers eliminate refractory lining limits, enabling higher steam pressures and larger plant capacities.

Dehydration reduces moisture concentration in a sulfur dioxide mixture, preventing metal corrosion during evaporation and gas release.

Excess sulfur dioxide converts peroxy acids in spent acid to sulfuric acid, avoiding energy-intensive decomposition and toxic waste generation.

Alternating product and oxidizing gas streams through a single reaction chamber maintains catalyst activity without external heating.

Excess SO2 converts peroxides in spent acid to sulfuric acid, bypassing energy-intensive decomposition.

Core-shell sulfur distribution in polyhedral black magnetic iron oxide particles resolves insufficient blackness in thin coating films.

Segmented catalyst layers with specific metal ratios achieve high sulfur compound conversion at low temperatures, reducing energy consumption.

Pure oxygen inlets in a sulfur bath prevent nitrogen oxide formation and eliminate complex cooling systems during high-pressure sulfur trioxide production.

Segmented acid loops enable continuous sulfuric acid production when steam generation systems fail.

Aqueous polysulfide composition uses sulfide salts to minimize thiosulfate by-products and prevent H2S gas formation.