US 12,378,482 B2Granted

Method for production of aviation fuel

AssigneeHaldor TopsøE A/S

InventorsAsbjørn Sune Andersson, Ole Frej Alkilde, Thi Hong Diep Duong

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Abstract

A process plant and a process for production of a hydrocarbon suitable for use as jet fuel from a feedstock being a renewable feedstock or an oxygenate feedstock, including combining the renewable feedstock with an amount of a hydrocracked intermediate product, directing it to contact a material catalytically active in hydrodeoxygenation under hydrodeoxygenation conditions to provide a hydrodeoxygenated intermediate product, fractionating the hydrodeoxygenated intermediate product in at least two fractions including a first fraction of which at least 90% boils below a defined boiling point and a second fraction of which at least 90% boils above the defined boiling point, directing at least an amount of the second fraction to contact a material catalytically active in hydrocracking under hydrocracking conditions to provide the hydrocracked intermediate product, the process being suited for efficiently converting the upper-boiling point of an oxygenate feedstock such as a renewable feedstocks to a lower boiling product.

Claims15

Dependent claims

A process for production of a hydrocarbon fraction suitable for use as jet fuel from an oxygenate feedstock, comprising the steps of:

a. feeding the oxygenate feedstock to the process,
b. combining all of the fed feedstock with a hydrocracked intermediate product to form a combined feedstock, directing the combined feedstock to contact a material catalytically active in hydrodeoxygenation (HDO) under hydrodeoxygenation conditions to provide a hydrodeoxygenated intermediate product,
c. defining a fractionation boiling point, fractionating said hydrodeoxygenated intermediate product in at least two hydrocarbon liquid fractions, including a first fraction of which at least 90% boils below said defined boiling point and a second fraction of which at least 90% boils above said defined fractionation boiling point,
d. directing at least an amount of said second fraction to contact a material catalytically active in hydrocracking (HDC) under hydrocracking conditions to provide the hydrocracked intermediate product, wherein an entirety of the hydrocracked intermediate product is combined with the oxygenate feedstock of step (a),
wherein the process excludes the first fraction of step (c) and the oxygenate feedstock of step (a) from being directed to contact any material catalytically active in hydrocracking (HDC) under hydrocracking conditions to provide the hydrocracked intermediate product.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/287,809Filed 23 Oct 2019
Priority: DK PA 2018 0076724 Oct 2018
Published: US 2021/0395622 A123 Dec 2021
Granted: 5 Aug 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification40 codes

C10G 3/44
Catalytic treatment: characterised by the catalyst used
C10G 65/12
Plural serial stages only: including cracking steps and other hydrotreatment steps
C10G 3/42
Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids: catalytic treatment
C10G 3/45
Characterised by the catalyst used: containing iron group metals or compounds thereof