| 摘要 |
<p>1,187,567. Base plate for fluidised bed. GAS COUNCIL. 30 March, 1967 [31 March, 1966], No. 14290/66. Heading B1F. [Also in Division F4] A base plate for a fluidised bed comprises a strip or circular or annular plate e.g. as shown in Fig. 2 with perforated risers 10, and treads 11 which may also be perforated. Fluidising medium passing through perforations 12 sweeps solid particles from the treads up into the fluidised bed. The risers may be at an angle of 30‹ or less to the vertical when the support lies generally in a horizontal plane and may undercut the treads, and the treads may be inclined at an angle of 30‹ or less to the horizontal. The base plate may be used in the hydrogenation of powdered coal under pressure or the hydrogenation of crude petroleum under pressure in the presence of a fluidised bed of coke.</p> |
