Patent ID: 8951408
Filing Date: 2015-02-10
Classification: C10G

Abstract:
1. A method for starting-up a naphtha fraction hydrotreating reactor which subjects olefins included in a naphtha fraction obtained in a fractionator by fractional distillation of hydrocarbon compounds produced by a Fischer-Tropsch synthesis reaction to hydrotreating, the method comprising: charging in advance an inactive hydrocarbon compound into a vapor-liquid separator; drawing the inactive hydrocarbon compound charged into the vapor-liquid separator from the vapor-liquid separator; mixing the inactive hydrocarbon compound drawn from the vapor-liquid separator and the naphtha fraction drawn from the fractionator; supplying a mixture of the naphtha fraction and the inactive hydrocarbon compound to the naphtha fraction hydrotreating reactor, so as to reduce the concentration of the olefins in the naphtha fraction hydrotreating reactor; hydrotreating the naphtha fraction while the supply of the mixture is regulated so as to control heat generated in the naphtha fraction hydrotreating reactor; and transferring hydrogenated naphtha obtained by hydrotreating the naphtha fraction in the naphtha fraction hydrotreating reactor to the vapor-liquid separator wherein a mixing ratio of the naphtha fraction to the inactive hydrocarbon compound is in the range of 1/4 to 1/1 when mixing the inactive hydrocarbon compound and the naphtha fraction.