Abstract Apparatus for the continuous dehydration of aluminum fluoride hydrates consisting of a fluidized-bed furnace with a cylindrical furnace jacket and a perforated plate just above the base, a lid to which gas-heated jacket radiant tubes are fixed reaching vertically almost to the said plate each of the tubes being closed at one end and having a concentric inner tube with a burner in the interior and being of almost the same length as the jacket radiant tube as well as open at the bottom so that combustion gas issuing from said burner in the interior of said inner tube flows upward in the tip of the outer tube after a change of direction of 180*. Thus both the fluidized bed outside the jacket radiant tube and, via a recuperator, the air passed to the burner are warmed.
Inventors
👤 Alfred Schmidt
👤 Ferdinand Weinrotter
👤 Roland Glotzl
👤 Rudolf Staudigl
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-02 09:54
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/48; C01F7/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
An apparatus as claimed in claim 1, wherein said gas-permeable plate is a perforated plate.
Claim 2
Dependent Claim
16 words
An apparatus as claimed in claim 1, wherein said gas-permeable plate is a porous sintered plate.
Claim 3
Dependent Claim
59 words
An apparatus as claimed in claim 1, wherein said apparatus comprises a plurality of said fluidized-bed furnaces, each of said furnaces having a product inlet and a product outlet, said plurality of furnaces being serially connected such that the product outlet of a first of said furnaces is connected to the product inlet of a second of said furnaces.
Claim 4
Dependent Claim
40 words
An apparatus as claimed in claim 1, in which several jacket radiant tubes which have the same diameter and are equally spaced from one another are arranged in said furnace in one or more circles concentric to said furnace jacket.
Claim 5
Dependent Claim
81 words
An apparatus as claimed in claim 1, further comprising a product inlet and a gas outlet in said lid, a product outlet in said jacket, a blowing gas supply aperture in said base, and a curved screening sheet positioned to extend from just below said gas outlet to just above said gas-permeable plate and connected in a gastight manner to said jacket around said product outlet, whereby only product from the bottom of said furnace is channeled to said product outlet.