FR2514023A1 - GAS CURRENT FLOW DIRECTION INVERSION CHAMBER - Google Patents

Abstract

The invention relates to a device for reversing the direction of flow for gas streams subjected to a treatment such as a carbonation and carrying fluid and / or viscous particles of fuel ash. IT INCLUDES A CHAMBER 1 IN WHICH THE ASCENDING CURRENT OF GAS, ENTERING THROUGH THE INPUT DUCT 4, IS SLOWED DOWN AND A DIRECTION OF FLOW IN PART 3 OF THE CHAMBER, PREVENTING THE FORMATION OF ADHERENT DEPOSITS OF SAID PARTICLES A THE UPPER PART 9 OF THE CHAMBER, THE FRAGMENTS OF SUCH DEPOSITS FORMED ON THE OTHER PARTS BEING DETACHED BY PERCUSSION ORGANS 11, RECEIVED BY THE INCLINED BOTTOM 5 OF THE CHAMBER, AND EVACUATED, WITH THE GAS EXHAUSTING, THROUGH THE OUTLET DUCT 6.

Description

The present invention relates to a

  flow direction co-supporting tubular walls with ai-

  lettes, chilled on all sides, inclined bottom

  nant a tubular gas inlet duct ,, concentric to the axis of said chamber and extending to near the upper part thereof, and a gas outlet duct, for a hot gas in course of treatment, container

  fluid and / or viscous particles of ash from

  bustible, from a gasification process and a-

  nimated in an upward movement There are known chambers or devices for reversing the direction of flow in which, before the reversal of the direction of flow, the stream of treated gas containing

  fluid and / or viscous particles of fuel ash

  The object of the present invention is to provide an inversion chamber of the aforementioned kind, shaped so as to prevent to the fullest extent possible the object of the present invention. possible fluid and / or viscous particles of fuel ash entrained in the treated gas stream to form adherent deposits in the gas impact zone with the upper part of said chamber and to allow evacuation, by the sole descending gas stream, fragments of such agglomerated deposits detaching from the refrigerated, finned tubular walls of this chamber when they are cleaned o

  This object is achieved, in accordance with the invention, by a device

  positive in which the downflow section, in the direction of flow reversal zone of the reversing chamber, is a multiple of the outlet section of the

  gas inlet tubular conduit, and in which the con-

-14023

  gas outlet pipe, in the inlet zone from which the inclined bottom of the chamber ends, leaves the wall of the latter below the outlet section of the inlet duct at an angle of inclination from 1102 to 1309 , and preferably from

1202

  Because of this conformation, the speed of the treated gas stream, in the flow section descending from the inversion zone of the chamber preceding the upper part thereof, decreases, compared with the speed in the outlet section of the tubular inlet, below

  the value of the descentional velocity of the fluid particles

  ides and / or viscous fuel ash, so that there is practically no agglomerated deposit 8 t in the impact zone of the upper part of the reversing chamber and that the fuel ash particles s' lower by their own weight and reach the wall of the chamber, with the gas stream, only after the inversion

  Another advantage of the device is

  lon the invention is that when cleaning the walls tu-

  refrigerated fins with fins, fragments of bond 8 te agglomerated, falling from zones other than the impact zone

  of the upper part of the reversing chamber, are at-

  emptied, with the downstream stream of treated gas, through the inclined gas outlet pipe, flush with the bottom of the reversing chamber The invention is described below in detail with reference

  to a preferred, nonlimiting example of an embodiment represented

  felt in the accompanying drawing, the single figure of which is an axial section of a gas flow direction reversing chamber according to the invention The cylindrical reversing chamber 1, constituted by tubular walls with fins 7, cooled from all sides,

  comprises a tubular gas inlet duct 4, concentri-

  as the axis 8 of the chamber, extending to near the upper part 9 thereof, and having a

  outlet section 2 for the input of a treated gas stream

  tee section from a gasification system La / downflow 3, multiple of the outlet section 2, located in the flow direction reversal zone of the chamber

  1, is placed between the outlet section 2 and the upper part

  rear 9 of the room The dep 8 ts members, from

  fluid and / or viscous particles of ash from

  bustible transported by the current of hot gas treated,

  are eliminated from the impact zone 10 of the upper part

  9 of the chamber by impact or percussion devices

  11 and discharged with the gas stream treated by the inclined bottom 5 of the chamber E and the gas outlet conduit 6 This gas outlet conduit 6, in the inlet zone from which the bottom 5 of the chamber terminates, leaves the wall of

  this chamber below the outlet section 2 of the

  gas inlet pipe 4 and is inclined on the axis 8 of the chamber at an angle of 110 to 130 g, and preferably of

Claims (1)

CLAIM   Gaseous flow direction reversing chamber comprising tubular fins walls (7), cooled in all directions, an inclined bottom (5) comprising a tubular gas inlet duct (4), concentric with the axis of said chamber and extending to near the upper part (9) thereof, and a gas outlet duct (6), for a hot gas being treated, containing particles   fluids and / or viscous fuel ash, from   resulting from a gasification process and animated by a movement- section   ascending, characterized in that the flow /   cendant (3), located in the direction of flow reversal zone   Lement of the inversion chamber (1), is a multiple of the outlet section (2) of the tubular gas inlet duct (4), and in that the gas outlet duct (6), in the inlet zone from which the inclined bottom (5) of the reversing chamber (1) terminates, leaves the wall of the latter below the outlet section (2) of the inlet duct (4) at an angle inclination, on the axis (8) of the chamber (1), from 1102 to 1302, and preferably from 1209