Abstract: There is provided a process for hydrotreating a liquid oil stream in a continuous operation in a fixed bed reactor; wherein the liquid stream is a thermochemical decomposition oil stream, and contains polymerisable reactive compounds; wherein the fixed bed reactor comprises at least a first reactor bed containing a first hydrotreatment catalyst and a second reactor bed containing a second hydrotreatment catalyst; the process comprising the steps of: (i) in a first operation period, passing at least 50 vol. % of the liquid oil stream through the first reactor bed and subsequently through the second reactor bed; (ii) in a second operation period, on determination of deposition of material formed from the polymerisable reactive compounds on the first reactor bed, passing a reduced proportion of the liquid oil stream through the first reactor bed, and passing an increased proportion of the liquid oil stream through the second reactor bed having not passed through the first reactor bed.

Abstract: A process for regeneration of a process enclosure and a catalyst comprising precipitated ammonium salts, and a process and a process plant for continuous hydrotreating a feedstock comprising nitrogen and halides.

Abstract: A thermal configuration for use during sulfidation and operation is disclosed which may involve multiple of the following heating steps, (a) heating a process feed by a charge heater, heating (b) a process feed stream or a recycle oil stream by heat exchange with a process effluent, heating (c) a process feed stream or a recycle oil stream by heat exchange with a said process feed after having been heated in the charge heater. Furthermore, the steps may be made independent by controlling the ratio of the streams directed to (b) or (c), controlling an amount of feed stream or recycle oil stream by-passed around the heating of (b) or (c) and controlling the temperature of step (a).

Abstract: A process and a process plant for efficient separation of ammonium halides from hydrocarbons is disclosed. The process involves high pressure gas/liquid separation and separate low pressure purification of the two streams, optionally in strippers.

Abstract: The process and apparatus of the disclosure utilize a heater between a hydroprocessing reactor and a hydroisomerization reactor. A hydroprocessing feed exchanger cools hydroprocessed effluent to effect turndown of heated hydroprocessed effluent so as to not feed the hydroprocessed effluent to the hydroisomerization reactor at a higher temperature than necessary.

Abstract: The process and apparatus of the disclosure utilize a heater between a hydroprocessing reactor and a hydroisomerization reactor. A hydroprocessing feed exchanger cools hydroprocessed effluent to effect turndown of heated hydroprocessed effluent so as to not feed the hydroprocessed effluent to the hydroisomerization reactor at a higher temperature than necessary.