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US 12,606,749 B2Granted
Bio-LPG production process
AssigneeCalor Gas Limited
InventorsKeith Simons, Hendrick Van Rensburg
Life of this patent
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Abstract
The present invention is in the field of processes for the production of BioLPG, and catalysts for use in said processes.
Claims22
A process for the selective production of BioLPG from C2 or C3 aliphatic alcohols, wherein the process comprises:
- (a) introducing a feedstream comprising one or more C2 or C3 aliphatic alcohols into a reaction vessel comprising a catalyst, wherein the catalyst comprises a ZSM5 zeolite material, an MCM22 zeolite material, or a combination thereof;
- (b) contacting the feedstream and catalyst within the reaction vessel at a temperature of from 250° C. to 750° C. and a pressure of from 0.5 atm to 50 atm;
- (c) recovering a product stream comprising C3 and/or C4 aliphatic hydrocarbons from the reaction vessel;
- and
- wherein the ZSM5 zeolite material or the MCM22 zeolite material are promoted zeolite materials that have reduced acidity as determined by temperature programmed desorption of ammonia, relative to the corresponding unpromoted zeolite material with equivalent Si/Al ratio, wherein the ZSM5 zeolite material or the MCM22 zeolite material have one or both of:
- i) a different acid site strength distribution as determined by temperature programmed desorption of ammonia, as the corresponding unpromoted zeolite material with equivalent Si/Al ratio;
- and ii) a different total number of acid sites as determined by temperature programmed desorption of ammonia, as the corresponding unpromoted zeolite material with equivalent Si/Al ratio.
4 more elements
A process for the selective production of BioLPG from C2 or C3 aliphatic alcohols, wherein the process comprises:
- (a) introducing a feedstream comprising one or more C2 or C3 aliphatic alcohols into a reaction vessel comprising a catalyst, wherein the catalyst comprises a ZSM5 zeolite material, an MCM22 zeolite material, or a combination thereof;
- (b) contacting the feedstream and catalyst within the reaction vessel at a temperature of from 250° C. to 750° C.;
- and
- (c) recovering a product stream comprising C3 and/or C4 aliphatic hydrocarbons from the reaction vessel;
- wherein the process is a continuous flow process, and wherein the process comprises introducing the feedstream to the reactor vessel at a flow rate of from 1 μL to 10 μL per minute per 150 mg of catalyst present in the reactor vessel, and wherein the process further comprises passing an inert gas through the reaction vessel during contacting step b), wherein the inert gas is introduced into the reaction vessel at a flow rate of from 0.5 ml/min per 150 mg of catalyst to 10 ml/min per 150 mg of catalyst, from 0.5 ml/min per 150 mg of catalyst to 5 ml/min per 150 mg of catalyst, from 1.5 ml/min to 5 ml/min, per 150 ml of catalyst or from 2 ml/min to 5 ml/min per 150 mg of catalyst.
2 more elements
Dependencies are inferred from the claim text.