| abstract |
Methods and systems for idling a hydrocracker are provided. The method can include hydrocracking a hydrocarbon in the presence of a catalyst and hydrogen in a reactor to produce a hydrocracked product. A kill agent can be introduced to the reactor in an amount sufficient to reduce hydrocracking by at least 10% therein. In some examples, the kill agent can include one or more nitrogen-containing compounds, such as ammonia, amines, anilines, ammonia-containing compounds, amine-containing compounds, or, aniline-containing compounds. In some examples, the catalyst can include one or more Group VIII metals ( e.g ., cobalt, nickel, palladium, iron, alloys thereof), one or more Group VIB metals ( e.g ., molybdenum, tungsten, alloys thereof, or oxides thereof), and a catalyst support, such as a zeolite. |