Back to results
US 2022/0128234 A1Published application
Apparatus and process for a kinetic feed plug screw
AssigneeMST Corporation
InventorRaymond Edward Lackey
Life of this patent
Estimating the term…
Abstract
A kinetic feed plug screw apparatus and process for creating the same, where organic raw material or feedstock is transported to a combustion or pyrolysis chamber, and a dynamic seal is concurrently and continuously created between the inlet and outlet to prevent immediate material blowback.
Claims7
A kinetic feed plug screw apparatus, comprising:
- (a) an inlet that receives a feedstock;
- (b) an outlet that is in fluid communication with the inlet and that outputs the feedstock;
- (c) a plurality of sleeves joined together and disposed between the inlet and the outlet, the plurality of sleeves including an inlet sleeve, a tapered housing sleeve, a compression sleeve, a dynamic seal sleeve, and a decompression sleeve;
- (d) a conveyer screw contained within the plurality of sleeves, the screw having a shaft and threads that are attached to the shaft and spaced at a distance from an inner surface of the plurality of sleeves, the distance between the screw and the interior surface of the plurality of sleeves forming a passage for feedstock to travel from the inlet to the outlet, wherein the thread pitch of the screw decreases along the screw from the inlet sleeve to the tapered housing sleeve, the portion of the screw that is contained within the dynamic seal sleeve having at least one cam attached to the shaft and being free from threads, and wherein the thread pitch of the screw increases along the screw from an inlet portion of the decompression sleeve to an outlet portion of the decompression sleeve;
- and
- (e) a plurality of anti-rotation bars that extends radially between the outer and inner surfaces of the dynamic seal sleeve, each bar including a tip that extends from the inner surface into the passage.
3 more elements
A kinetic feed plug screw apparatus for transferring feedstock I, comprising:
- (a) an inlet that receives a feedstock;
- (b) an outlet that is in fluid communication with the inlet and outputs the feedstock;
- (c) a plurality of sleeves joined together and disposed between the inlet and the outlet, the plurality of sleeves including an inlet sleeve, a tapered housing sleeve, a compression sleeve, a dynamic seal sleeve, and decompression sleeve;
- (d) a conveyer screw contained within the plurality of sleeves, the screw having a shaft and threads that are attached to the shaft and spaced at a distance from an inner surface of the plurality of sleeves, the distance between the screw and the interior surface of the plurality of sleeves forming a passage for feedstock to travel from the inlet to the outlet, wherein the thread pitch and pitch diameter of the screw decreases along the screw from the inlet sleeve to the tapered housing sleeve, the portion of the screw that is contained within the dynamic seal sleeve having at least one cam attached to the shaft and being free from threads, and wherein the thread pitch of the screw increases along the screw from an inlet portion of the decompression sleeve to an outlet portion of the decompression sleeve;
- (e) the dynamic seal sleeve further comprising an outer and inner surface, and a series of anti-rotation bars extending radially along the outer and inner surface, the bars having at least one length, at least one tip, and at least one flange, where the at least one length is equal to the length of the dynamic seal sleeve, and the at least one tip extends perpendicularly from the inner surface into the passage, and the at least one flange is exposed along the outer surface of the sleeve;
- and
- (f) the decompression sleeve having the outlet.
4 more elements
A method of transferring feedstock into a pyrolysis vessel, comprising:
- receiving the feedstock at an inlet;
- applying positive pressure at the inlet toward an outlet that is in fluid communication with the inlet;
- moving the received feedstock via a screw conveyor within a plurality of sleeves that progressively decrease in diameter and pitch prior to a dynamic seal sleeve of the plurality of sleeves;
- reducing rotation of the moved feedstock within the dynamic seal sleeve of the plurality of sleeves, such that a dynamic seal is formed by the feedstock within at least a portion of the dynamic seal sleeve;
- and
- moving the reduced rotation feedstock via the screw conveyor to the outlet, where the screw conveyer has a plurality of pitches that increase in length prior to an outlet.
3 more elements
Dependencies are inferred from the claim text.