Solidification TRIZ Cases

A high-pressure heavies recovery column removes C5+ before deep cooling, widening LNG operating range and cutting refrigeration power.

A two-vessel pressurized recovery setup captures light volatiles from condensate, cutting emissions, product loss, and oxygen fouling.

Partial condensation and regulated remixing enable high-pressure syngas with the target H2:CO ratio while cutting compression demand and methane carryover.

A methane-C3 refrigerant loop replaces separate propylene, ethylene, and methane systems while covering cooling from ambient to -136°C.

Joule-Thomson expansion cools natural gas to condense heavier hydrocarbons, cutting reforming complexity, plant size, and flaring.

Integrated OCM and catalytic conversion turns methane into transportable liquid hydrocarbons, avoiding pipeline dependence and improving natural gas value.

Isentropic expansion in a closed refrigerant loop improves natural gas liquefaction efficiency, flexibility, and reliability.

A common-shaft expander, motor, and compressor recover expansion power for dew-point control while reducing gas migration and extra compressor trains.

Controlled subsea cooling condenses and removes water from produced gas, lowering dew point and avoiding hydrate inhibitor regeneration.

A positive displacement compressor added in parallel with dynamic compressors debottlenecks LNG refrigerant flow and preserves flexible operation.

Partial condensation and two-stage phase separation improve CO purity from nitrogen-rich feed gas while cutting compressor energy use.

A distillation column strips methane from vaporized mixed refrigerant during LNG turn-down, returning heavier components to cut loss and storage load.

A shared closed-loop refrigeration system cools LNG and condenses column reflux, cutting NRU complexity while producing high-purity nitrogen.

A tray and selective drain remove liquefied air while retaining deposits, helping hydrogen heat exchangers avoid clogging and cut maintenance.

An accumulator and bypass valve store excess cold helium and release it during demand peaks, avoiding oversized cryogenic cooling equipment.

Valve-guided flow rerouting keeps cryogenic air separation pressure and oxygen vaporization stable when the cold booster fails.

Upstream junction mixing blends sidestream and main process flows before compression to avoid inlet pressure and temperature stratification.

Combining ALC and MPC control lets cryogenic air fractionation maintain steady operation while responding quickly to changing product demand.

A widened piping rack shortens refrigerant lines and groups air-cooled exchangers to cut LNG plant footprint and facility cost.

Partial ethylene purification enables hydroformylation of ethane-ethylene feeds with lower syngas demand, easier recycle, and lower cost.

Pressure and temperature control keeps impure CO2 in a liquid or supercritical phase, avoiding two-phase flow and cutting pipeline power use.

Membrane pre-treatment and cryogenic flashing liquefy methane-rich gas while removing CO2 and water as slurry with lower infrastructure demand.

Selective blocking of heat exchanger flow groups maintains pressure drop at low mass flow, preventing unstable liquefaction and mechanical stress.

Electronic vapor-pressure control matches helium liquefaction to recovery flow, cutting losses, storage demand, and plant complexity.

Turbo expanders recover cold energy during pressure reduction to liquefy natural gas for flexible local storage without geological limits.

Cooling, expansion, phase separation, and gas recycle liquefy contaminated hydrocarbon streams with lower complexity and chemical demand.

A shared refrigeration cycle couples LNG and CO2 liquefaction, cutting separate cold-system cost while removing heavy hydrocarbons and benzene.

Uses LNG coldness through heat exchangers, expansion, and reflux distillation to cut external cooling demand and stabilize fuel gas output.

A split syngas route combines water-gas shift and amine CO2 scrubbing to tune methanol gas ratio while recovering H2 and CO from acetylene offgas.

A closed-loop mixed refrigerant cycle boosts C2+ recovery from natural gas while lowering compression cost and simplifying operation.

Elevated-pressure liquefaction with recycled nitrogen cooling cuts energy use and plant complexity in small-scale LNG production.

A supercritical CO2 power cycle uses a transpiration-cooled combustor and heat recovery to generate power while delivering pure CO2 at pipeline pressure.

Recovering LNG evaporation cold in a recirculating nitrogen loop cuts nitrogen liquefaction power use while maintaining efficient cryogenic cooling.

Uniform feed routing in a controlled freeze zone improves hydrocarbon separation while limiting solid adhesion and unnecessary cooling.

A nitrogen-rich stream is injected into the lower distillation column to prevent oxygen buildup and keep cryogenic methane separation outside flammability limits.

A reflux contaminant removal column strips hydrocarbons from a nitrogen reverse-Brayton refrigerant loop without purging or pressure reduction.

A recycled hydrocarbon solvent strips benzene from lean natural gas to below 1 ppm, preventing freeze-up in downstream liquefaction units.

Exhaust heat drives gas separation while compressed end-flash and boil-off gas fuel the turbine, cutting space needs on floating LNG facilities.

Rapid-cycle partial pressure purge dehydration cuts pressure, heat, and adsorbent demand while protecting molecular sieves in cryogenic gas processing.

By cooling compressed CO2 near its critical temperature, the system switches rear-stage pressurization from gas compression to liquid pumping, cutting refrigeration load and high-pressure hardware.

Two refrigerants exchange heat before transfer to an LNG facility, enabling low-pressure storage and reducing thermal shock risk.

Captures NGLs at production sites through water removal, glycol cooling, phase separation, and distillation to cut flaring and improve recovery.

A movable cryopump shifts flush with the chamber for higher pump speed, then retracts behind a gate to isolate regeneration gases.

A surge tank and reserve storage tank keep oxygen flowing during plant shutdowns while avoiding separate high-pressure pumps and excess refrigeration loss.

Staged C5-C6 absorption with partial condensation and interstage cooling cuts FCCU fuel-gas propylene losses and raises recovery by 2-3 wt%.

Expanded offgas and liquid CO2 are reused for staged cooling and work recovery, cutting flue-gas CO2 liquefaction energy demand.

A mixed refrigerant LNG process uses separated nitrogen vapor as refrigerant to lower nitrogen content while reducing boil-off energy waste and methane loss.

Cooling a liquid mixture near the product freezing point drives immiscibility, enabling phase separation without triggering solid crystallization.

Multi-stage direct and indirect exchangers desublime and detach solid CO2 from flue gas, cutting unit operations and energy use.

Liquid nitrogen drives phase separation in pressurized LNG to cut nitrogen, recover hydrocarbons, and avoid bulky offshore rejection equipment.