| 摘要 |
An apparatus suitable for introducing solids (e.g. cracking catalyst) into a vessel (e.g. of a fluid catalytic cracking apparatus) via a solids inlet opening comprising tubular solids inlet means extending inside an open ended tubular housing, the first end part of which can be secured to the solids inlet opening of the vessel, a shrouding tube arranged substantially coaxially inside the housing in such a manner that the downstream end part thereof extends outwardly from the first end part of the housing, valve means arranged inside the shrouding tube to allow a controlled solids flow through the tubular solids inlet means, sealing means arranged between the tubular housing and the shrouding tube to prevent leakage of gas and/or solids, and sealing means arranged between the shrouding tube and the tubular solids inlet means to prevent leakage of gas and/or solids. The invention further relates to an apparatus to be used in catalytic cracking of hydrocarbonaceous material containing the above-described apparatus. |
