Haldor Topsoe A/s

Haldor Topse A/s

Topsoe A/s

Gordon Gongngai Low

Michael Glenn Hunter

Angelica Hidalgo Vivas

Lars Skov Jensen

Steven W Stupin

In a method for the hydroprocessing of renewable feeds in a hydroprocessing unit (unit A), comprising the use of sour waste water from the same or another unit (unit B), which is processing feeds containing sulfur and nitrogen, as wash water in unit A, thereby changing the pH of the waste water from unit A to lower the risk of carbonic acid corrosion of corrodible steel parts in unit A, the renewable material in unit A is directed to contact a material that is catalytically active in hydrogenating the renewable material in the presence of hydrogen, and the effluent is combined with the wash water stream which contains hydrogen sulfide and/or ammonia.

Method for the hydroprocessing of renewable feeds

A hydrocracking process by the steps of: (a) providing a mixture comprising hydrocarbonaceous feedstock and hydrogen; (b) obtaining a hydrocracked effluent; (c) separating the hydrocracked effluent into a first vapor portion and a first liquid portion; (d) heating the first liquid portion to form a vapourised first liquid portion; (e) feeding the vaporised first liquid portion to a fractionation section producing individual product fractions including a heavy bottom fraction; (f) withdrawing from the fractionation section the heavy bottom fraction; (g) splitting the heavy bottom fraction in a stream for stripping and a heavy bottom fraction recycle stream; (h) stripping the stream for stripping, with a stripping medium, in a counter current stripping column to form an overhead vapor and a stripped liquid; (i) feeding the overhead vapor to the fractionation section, to a recycle stream or to a position upstream the fractionation section.

Process for hydrocracking a hydrocarbon feedstock

Partial conversion hydrocracking process comprising the steps of The invention also includes an apparatus for carrying out the partial conversion hydrocracking process.

Partial conversion hydrocracking process and apparatus

Partial conversion hydrocracking process comprising the steps of (a) hydrotreating a hydrocarbon feedstock with a hydrogenrich gas to produce a hydrotreated effluent stream comprising a liquid/vapor mixture and separating the liquid/vapor mixture into a liquid phase and a vapor phase, and (b) separating the liquid phase into a controlled liquid portion and an excess liquid portion, and (c) combining the vapor phase with the excess liquid portion to form a vapor plus liquid portion, and (d) separating an FCC feed-containing fraction from the controlled liquid portion and simultaneously hydrocracking the vapor plus liquid portion to produce a dieselcontaining fraction, or hydrocracking the controlled liquid portion to produce a diesel-containing fraction and simultaneously separating a FCC feed-containing fraction from the vapor plus liquid portion. The invention also includes an apparatus for carrying out the partial conversion hydrocracking process.

Hydrotreating and hydrocracking process and apparatus

Partial conversion hydrocracking process comprising the steps of (a) hydrotreating a hydrocarbon feedstock with a hydrogen-rich gas to produce a hydrotreated effluent stream comprising a liquid/vapour mixture and separating the liquid/vapour mixture into a liquid phase and a vapour phase, and (b) separating the liquid phase into a controlled liquid portion and an excess liquid portion, and (c) combining the vapour phase with the excess liquid portion to form a vapour plus liquid portion, and (d) separating an FCC feed-containing fraction from the controlled liquid portion and simultaneously hydrocracking the vapour plus liquid portion to produce a diesel-containing fraction, or hydrocracking the controlled liquid portion to produce a diesel-containing fraction and simultaneously separating a FCC feed-containing fraction from the vapour plus liquid portion. The invention also includes an apparatus for carrying out the partial conversion hydrocracking process.

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Tustin, CA, United States of America

Gordon Gongngai Low