关键词: 连续重整, 器内再生, 积炭, 固定床, 烧焦, 移动床

Abstract: Because the carbon content of high coke deposit continuous reforming catalyst is far beyond the level allowed by the normal operation of the regeneration system, the normal continuous regeneration in the reactor will lead to the destruction of catalyst support crystal phase and the damage of reactor internals.Taking the abnormal increase of carbon content caused by abnormal shutdown of a CCR unit as an example, under the condition of no feed into the reforming reaction system, through strictly controlling the parameters such as inlet temperature, inlet oxygen content and catalyst circulation rate in the regenerator, the coke burning in fixed bed and continuous coke burning in moving bed were adopted in the regenerator to reduce the catalyst carbon content in the unit. Then, the normal regeneration of catalyst was realized and the activity of catalyst was fully recovered. It became the first successful case of in-situ regeneration of high coke deposit continuous reforming catalyst in China.

Key words: continuous catalytic reforming, in-situ regeneration, coke deposition, fixed bed, coke burning, moving bed