Patent ID: 7214352

Claim:
A cylindrical reactor with a curved shape bottom, containing a radial bed of particles of a solid and comprising: a reactor ( 1 ) having a means of feeding a charge, a plurality of perforated, internal conduits ( 5 ), placed at the periphery of the reactor and approximately parallel to the axis of the reactor, said conduits being connected to the feed means, whereby said conduits feed said radial particle bed ( 2 ) with said reactor charge, a circular collar ( 8 ) supporting the perforated internal conduits, said circular collar ( 8 ) being located in the lower bottom of the reactor, a perforated ( 7 ), central collector ( 3 ) elongated along said axis that receives an effluent resulting from contact of the charge with the particle bed, an outlet ( 14 ) connected to the central collector, wherein the particle bed is located between the conduits and the collector, and wherein said collar ( 8 ) is pierced with at least one opening ( 9 ), plumb with each conduit ( 5 ), and said reactor further comprises a circular, vertical grate ( 11 ) pierced with holes ( 12 ) that are essentially impervious to particles, suspended from said circular collar so as to delimit, with the wall of the reactor, a ring-shaped chamber ( 10 ), spaced away from said perforated central collector for circulation of the charge, the height of the grate being adjusted so that it delimits an internal passage between the grate and the bottom of the reactor, said passage being made essentially impervious to particles by sealing means ( 13 ) comprising a gas-pervious fabric whose upper part is attached to the grate and whose lower part rests on the bottom of the reactor.