Mini-structured catalyst beds for three-phase chemical processing
AssigneeCorning Incorporated
InventorWei Liu
Life of this patent
Estimating the term…
Abstract
Three-phase chemical hydrogenation reactions involving the processing of gas-liquid reactant feed streams over “mini-structured” solid catalyst beds formed e.g., of channeled honeycomb monoliths incorporating solid catalysts achieve reaction efficiencies suitable for effective integral reactor operation by utilizing low superficial liquid linear velocities and high feedstream gas:liquid ratios; single-pass conversion efficiencies in excess of 50%, typically 80-100%, are achieved.
Claims20
A process for carrying out a gas-liquid reaction in the presence of a solid catalyst comprising
- conveying a gas-liquid feed stream through a monolithic structured catalyst bed consisting of a number of reaction channels catalyzed by solid catalysts;
- the liquid in the feed stream being conveyed through the catalyst channels at a superficial liquid linear velocity in the range of 0.01-10 cm/s and
- the gas in the feed stream being conveyed through the catalyst channels in a proportion providing a gas:liquid volume ratio G:L in the range of 1-4000 standard liters of gas/liter of liquid.
A process for carrying out a three-phase chemical reaction by passing a gas/liquid feed stream through a honeycomb catalyst bed wherein:
- the three-phase chemical reaction is a hydrogenation reaction;
- the gas contains hydrogen and the liquid includes an aromatic hydrocarbon compound;
- the reaction is carried out at temperatures in the range of 100-600° C. and pressures in the range of 5-1000 bar;
- the liquid is passed through the catalyst bed at a superficial liquid linear velocity in the range of 0.1 to 5.0 cm/s;
- the gas:liquid ratio in the feed stream is in the range of 10-500 standard liters/liter;
- and
- the reaction achieves at least 80% hydrogenation of the aromatic hydrogen compound.
A process for carrying out a three-phase chemical reaction by passing a gas/liquid feed stream through a honeycomb catalyst bed wherein:
- the three-phase chemical reaction is a hydrogenation reaction;
- the gas contains hydrogen and the liquid includes an olefin;
- the reaction is carried out at temperatures in the range of 20-250° C. and pressures in the range of 5-30 bar;
- the liquid is passed through the catalyst bed at a superficial liquid linear velocity in the range of 0.1 to 5.0 cm/s;
- the gas:liquid ratio in the feed stream is in the range of 10-500 standard liters/liter;
- and
- the reaction achieves at least 80% hydrogenation of the olefin.
A process for carrying out a gas-liquid reaction within a chemical reactor containing a solid catalyst comprising:
- conveying a gas-liquid feed stream comprising a gas containing hydrogen and a liquid containing an unsaturated or substituted hydrocarbon through a gas-liquid reactor containing a monolithic structured catalyst bed comprising a number of reaction channels catalyzed by solid catalysts;
- the liquid in the feed stream being conveyed through the catalyst channels at a superficial liquid linear velocity in the range of 0.01-10 cm/s;
- the gas in the feed stream being conveyed through the catalyst channels in a proportion providing a gas:liquid volume ratio G:L in the range of 1-4000 standard liters of gas/liter of liquid;
- and
- a conversion rate in excess of 50% of the theoretical conversion limit for the unsaturated or substituted hydrocarbon being obtained in a single pass through the reactor.
Dependencies are inferred from the claim text.