Back to results
US 4,544,379 AGranted
Method for metal halide removal
AssigneeEmcotek
InventorsHenry H. Elliott, Lawrence R. Lepovitz, Dale G. Jones
Life of this patent
Estimating the term…
Abstract
A method for removing metal halides from effluent gas streams employs a rotary spray scrubber including an elongate gas flow duct and a rotary scrubber dispersion hub. The rotary spray scrubber is characterized by a ratio of hub diameter to duct diameter in the range from about 0.55 to 0.75. Using a basic liquid scrubbing medium in such a scrubber, metal halide particulate and hydrochloric acid gas removal efficiencies in excess of 99% have been achieved.
Claims7
A method for removing metal halide hydrolysis products from an air stream, said method employing a rotary spray scrubber including:
- a substantially cylindrical duct which defines an axial flow path for the air stream;
- a rotatable dispersion hub coaxially mounted in the duct, said hub including a circular periphery having a plurality of radial passages;
- wherein the cylindrical duct and the hub together define an annular passage therebetween in the axial direction, and wherein the ratio of the hub diameter to the duct diameter at said annular passage is in the range from about 0.55 to 0.75;
- said method comprising:
- rotating the hub at a preselected rotational speed;
- supplying liquid scrubbing medium to the passages in the hub so that a radial spray is directed to the annular passage between the hub and the duct;
- and
- directing the air stream flow through the annular passage whereby the radial spray impacts the particulates to remove them from the air stream.
5 more elements
Dependencies are inferred from the claim text.