SU131683A1 - Apparatus for contacting gases or liquids with a granular material in a fluidized bed - Google Patents

Description

In the known apparatus for contacting liquids or gases with a granular material in a fluidized bed, the velocity of a gas or liquid is limited by the effects of ash of a granular material.

The proposed apparatus makes it possible to significantly increase the gas velocity in the fluidized bed, as well as to use finer granular materials than in known apparatuses, since the boiling bed in it is organized not in a gravitational field, as usual, but in a significantly more intense field. centrifugal force generated by the rotation of the reaction chamber.

FIG. 1 is a schematic diagram of the proposed apparatus.

The gas enters the stationary body 1 of the apparatus through the pipe a and passes into the cavity of the drum 2 through its cylindrical cylindrical wall 3, on which the granular material is disposed, which is located during the rotation of the drum with layer 4. At the corresponding gas velocities, layer 4 goes into a fluidized state. The exhaust gas is removed from the apparatus along the cavity in the hollow shaft of the drum. The end walls of the drum are conical to compensate for the reduction in the living cross section of the gas stream.

FIG. 2 shows schematically an apparatus different from that shown in FIG. 1 in that coaxial lattice cylindrical partitions 5 are arranged therein to form on them an appropriate number of stages and a boiling layer. The designations of the elements are the same as in FIG. I.

FIG. Figure 3 schematically shows an apparatus with devices for continuously introducing granular material into the drum cavity and for transferring it # 131683-2 from one shelf to another, as well as for withdrawing already spent granular material from the apparatus.

Gas is introduced into the body of the apparatus 6 through a pipe 7 to pass through the layers 8 on the trellis wall 9 of the drum 10 and coaxial cylindrical lattice partitions 11. The gas leaves the apparatus through the cavity 12 of the hollow shaft.

The granular material is introduced through the shaft cavity at the opposite end of the drum. The encounter screen 13, installed perpendicularly to the axis of rotation of the drum, the granular material is placed on the partitions //, flowing from the axis closest to the more distant ones through the flow nozzles 14, and is led out of the drum through holes 15 into the cavity between the case and the drum, separated from cavity for the input of fresh gas labyrinth seal 16.

The spent granular material is withdrawn from the body of the apparatus through the opening P of the hopper 18 in the lower part of the body.

FIG. Figure 4 shows the proposed apparatus, which ensures its mixing, the granular material in the boiling bed, perpendicular to the direction of the gas flow. Gas through the pipe and enters the housing 19, passes through the lattice racks of the 20-speed drum and leaves the apparatus through the cavity b in the shaft of the drum.

The granular material enters through the hollow shaft at the opposite end of the apparatus, encounters a screen 21 and is placed on layers of /, // and /// on the grid walls, flowing from one step to another through partitions 22.

The withdrawal of the spent granular material from the apparatus is provided by its entrainment by gas, for which a fixed rod or tube 23 is introduced through the cavity b. When the layer in the /// drum stage is thickened so that it reaches the end of the rod 23, the granular material hindered by it is carried away gas from a layer and from the device.

Subject invention

Claims (3)

1. An apparatus for contacting gases or liquids with a granular material in a fluidized bed, containing in its housing a reaction chamber with one or more Russian-arranged blown grids with raw gas (or liquid) inlet to the first russ grid and exhaust gas from the chamber, different the fact that, in order to intensify the process, the reaction chamber is made in the form of a drum driven with a single lattice or porous cylindrical wall or with several coaxial cavities rotated -conjugated walls, reinforced on the hollow shaft, the cavity of which is intended for discharging flue gas. 2. The apparatus according to claim 1, characterized in that, in order to ensure that the granular material is renewed during operation, it is provided with a feeder of known construction for feeding the granular material through the shaft cavity to the cylindrical drum grill from one end, with overflow tubes in coaxial grilles for sequential transfer of this material from one grid to another and holes in the end of the drum or brake with a fixed rod inserted through the hollow shaft to the level of the free surface of the fluidized bed, for outputting the material from the machine. 3. The device on PP. 1 and 2, characterized in that partitions, such as radial or curvilinear outlines, are installed in the drum, allowing the granular material to move along the grating surfaces in a direction transverse to the gas flow passing through the fluidized beds.