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US 11,028,330 B2Granted
Hydrotreatment or hydroconversion process with a stripper and a low pressure separator drum in the fractionation section
AssigneeAxens
InventorsLajeunesse Odile, Pierre-Yves Alspektor, Paris Packeu, Nicolas Pupat
Life of this patent
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Abstract
A facility and a process for hydrotreatment or hydroconversion, in which a fractionation section comprises a stripper which operates on the overhead fraction obtained from a low pressure separator drum.
Claims11
A facility capable of hydrotreatment or hydroconversion of gas oils, vacuum distillates, atmospheric or vacuum residues or of an effluent from a Fischer-Tropsch unit, comprising at least:
- a reaction section R-1,
- a high pressure hot separator drum B-1, supplied with effluent obtained from the reaction section R-1 and from which a bottom stream is supplied to separator drum B-5,
- a high pressure cold separator drum B-2, supplied with an overhead stream leaving the high pressure hot separator drum B-1 and from which a liquid bottom stream is supplied to stripper C-1,
- a compression zone K supplied with gaseous effluent obtained from B-2, termed recycled hydrogen,
- a low pressure hot separator drum B-5, supplied with a liquid stream obtained from B-1, operating at a pressure of 0.3 to 2.0 MPa, and from which an overhead gaseous effluent constitutes a portion of the feed for the stripper C-1, and from which a liquid effluent constitutes a first portion of feed for fractionation column C-2 without separation of acid gases,
- a separation column C-1 also termed a stripper supplied with a liquid stream obtained from B-2, and a gaseous stream obtained from B-5, producing an acid gaseous fraction and a bottom product stripped of gases that constitutes an other portion of the feed for the fractionation column C-2,
- a principal fractionation column C-2, supplied with the bottom stream from the stripper C-1 and with the liquid bottom stream obtained from B-5 directly without separation of acid gases, and which separates the following cuts:
- naphtha, diesel, kerosene and residue,
- a furnace F-1 heating feed to the reaction section R-1 and/or a portion of hydrogen necessary for said reaction section R-1.
6 more elements
A process for the hydrotreatment or hydroconversion of gas oils, vacuum distillates, atmospheric or vacuum residues or effluent from a Fischer-Tropsch unit, comprising, in a facility capable of hydrotreatment or hydroconversion thereof:
- reacting said gas oils, vacuum distillates, atmospheric or vacuum residues or effluent from a Fischer-Tropsch in a reaction section R-1,
- separating effluent from reaction section R-1 in a high pressure hot separator drum B-1, supplying a bottom stream to separator drum B-5,
- separating an overhead stream from high pressure hot separator drum B-1 in a high pressure cold separator drum B-2, supplying a liquid bottom stream to stripper C-1,
- compressing in a compression zone K gaseous effluent obtained from B-2, termed recycled hydrogen,
- separating a liquid stream obtained from B-1 in a low pressure hot separator drum B-5, operating at a pressure of 0.3 to 2.0 MPa, and sending an overhead gaseous effluent as a portion of feed to the stripper C-1, and sending a liquid effluent as a first portion of feed for fractionation column C-2 without separating acid gases,
- supplying to a separation column C-1 (also termed a stripper) a liquid stream obtained from B-2, and a gaseous stream obtained from B-5, producing an acid gaseous fraction and a bottom product stripped of gases that constitutes an other portion of the feed for the fractionation column C-2,
- supplying to a principal fractionation column C-2 the bottom stream from the stripper C-1 and the liquid bottom stream obtained from B-5 directly without separation of acid gases, and separating the following cuts:
- naphtha, diesel, kerosene and residue,
- heating feed to the reaction section R-1 and/or a portion of hydrogen necessary for said reaction section R-1 in a furnace F-1,
- in which the separation column C-1 is operated under the following conditions:
- total pressure in the range 0.6 to 2.0 MPa.
8 more elements
Dependencies are inferred from the claim text.