Hydroprocessing with increased recycle gas purity
Номер патента: EP4334413A1
Опубликовано: 13-03-2024
Автор(ы): Priyesh THAKKER, Stefan ANDERSEN, Steven W. Stupin
Принадлежит: Haldor Topsoe AS
Опубликовано: 13-03-2024
Автор(ы): Priyesh THAKKER, Stefan ANDERSEN, Steven W. Stupin
Принадлежит: Haldor Topsoe AS
Реферат: The present disclosure relates to a process, a process plant and equipment for conversion of a feedstock rich in oxygenates to a hydrocarbon comprising the steps of directing said feedstock in combination with a recycle gas stream to a hydroprocessing step, to provide a two-phase hydroprocessed process stream comprising at least hydrogen, methane andhydrocarbons, combining a methane lean stream of hydrocarbons being liquid at ambient temperature, with a methane donor stream being either (i) said two-phase hydroprocessed process stream comprising methane or (ii) a gaseous stream derived from the two-phasehydroprocessed process stream by phase separation, to provide a multiple-phase combined stream, separating said multiple-phase combined stream in at least a hydrogenrich gas stream comprising a majority of the hydrogen comprised in said a hydroprocessed process stream and a rich liquid hydrocarbon stream comprising absorbed methane, in a desorption step desorbing an amount of methane from said rich liquid hydrocarbon stream by a flashing process or by a stripping process, to provide a methane rich gas phase and a liquid product stream of hydrocarbons, wherein the methane rich gas phase has a higher concentration of methane than the gas phase of the methane donor stream. This has the associated benefit of such a process being efficient in reducing the amount of methane in the recycle gas stream, which enables an increased partial pressure of hydrogen by facilitating release of methane in a separate stream.
Hydroprocessing with increased recycle gas purity
Номер патента: US20240228889A1. Автор: Steven W. Stupin,Priyesh THAKKER,Stefan ANDERSEN. Владелец: Haldor Topsoe AS. Дата публикации: 2024-07-11.