US 11,998,863 B2
Place and cost efficient plant and process for separating one or more purified hydrocarbon streams from crude hydrocarbon streams, such as for naphtha stabilization and LPG recovery
Gary R. Martin, Grapevine, TX (US)
Assigned to SULZER MANAGEMENT AG, Winterthur (CH)
Appl. No. 17/781,360
Filed by SULZER MANAGEMENT AG, Winterthur (CH)
PCT Filed Nov. 30, 2020, PCT No. PCT/US2020/062565
§ 371(c)(1), (2) Date May 31, 2022,
PCT Pub. No. WO2021/113166, PCT Pub. Date Jun. 10, 2021.
Claims priority of provisional application 62/945,145, filed on Dec. 7, 2019.
Prior Publication US 2023/0001324 A1, Jan. 5, 2023
Int. Cl. B01D 3/00 (2006.01); B01D 3/14 (2006.01); C10G 5/04 (2006.01); C10G 7/02 (2006.01)
CPC B01D 3/141 (2013.01) [C10G 5/04 (2013.01); C10G 7/02 (2013.01); C10G 2300/1044 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A plant for separating at least one purified hydrocarbon stream from at least one crude hydrocarbon feed stream, the plant comprising:
a vessel with a single foundation, the vessel comprising:
an absorber section; and
a first divided-wall column,
the first divided-wall column comprising:
an outer wall,
a dividing wall,
a stripper section,
a stabilization section,
a feed line coupled to the stripper section and configured to provide at least one hydrocarbon feed stream to the stripper section,
a bottoms removal line for removing a stabilized naphtha product and being coupled to a bottom of the divided-wall column and configured to remove a bottom stream from the first divided-wall column,
two absorption fluid lines coupled to the absorber section and configured to provide absorption fluid to the absorber section of the first divided-wall column,
a gas removal line coupled to the top of the first divided-wall column and configured to remove a gas stream from the first divided-wall column,
an upper section that comprises the absorber section, and
a lower section that is connected with the upper section, the lower section comprising the dividing wall, the stripper section and the stabilization section,
the dividing wall comprising an upper inclined section and a lower essentially vertical section,
the upper inclined section of the dividing wall extending from an upper edge of the lower essentially vertical section in an inclined angle to the outer wall and being fluid tightly connected with the outer wall, and
the inclined angle between the upper inclined section and a length axis of the first divided-wall column is more than 90° and less than 180° seen in a direction from the bottom to a top of the first divided-wall column.