초록 ▼

The hydrotreatment of hydrocarbons in the liquid phase is effected in a column containing a catalyst fixed or moving bed supported by a grid, wherethrough passes an ascending stream of the charge admixed with hydrogen. The perforations of the grid are small enough to prevent passage of the catalyst

The hydrotreatment of hydrocarbons in the liquid phase is effected in a column containing a catalyst fixed or moving bed supported by a grid, wherethrough passes an ascending stream of the charge admixed with hydrogen. The perforations of the grid are small enough to prevent passage of the catalyst particles but large enough for giving passage to the hydrogen-charge mixture. The reaction effluent is withdrawn from the top of the column.

대표청구항 ▼

An apparatus for conducting a process for withdrawing solid particles and introducing a fluid charge at the lower portion of a contact zone, comprising a reactor, first introducing means for introducing fresh catalyst at the upper part of the reactor, first discharge means for discharging used catal

An apparatus for conducting a process for withdrawing solid particles and introducing a fluid charge at the lower portion of a contact zone, comprising a reactor, first introducing means for introducing fresh catalyst at the upper part of the reactor, first discharge means for discharging used catalyst at the lower part of said reactor, with said first discharge means comprising at least one withdrawing funnel of inverted conical pyramidal shape, whose apex is turned downwardly, with the apex further defining an opening for discharging used catalyst from the reactor, wherein said at least one withdrawing funnel is provided with perforations or slots substantially distributed over its entire surface, with the size of said perofrations being sufficiently small to prevent passage of catalyst particles introduced into the reactor through said perforations, but sufficiently large to permit passage of an ascending stream of fluid charge; second introducing means for introducing a fluid at the lower part of the reactor and second discharge means for discharging a treated fluid charge at the upper part of the reactor; and distribution means arranged between the funnel and the fluid second introducing means, said distribution means comprising (abg