Pyrolysis process for simultaneously conveying and agitating cracking feedstock within a screw
OwnerMin-Chen Shiueinventor
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Abstract
A pyrolysis process is incorporated with a pyrolysis furnace in the process. The pyrolysis furnace comprises an upper screw and a lower screw juxtaposed to the upper screw to smoothen the thermal cracking process, with each blade helically formed on the screw shaft being notched in the periphery of the screw blade to form a plurality of bifurcated fins on the blade, such that besides the conveying of feedstock in the screw as driven by the blade, the bifurcated fins may serve as agitating elements, thereby simultaneously conveying the feedstock and agitating the feedstock for increasing the production efficiency of the pyrolysis.
Claims6
A pyrolysis process incorporating a pyrolysis furnace in the process, said pyrolysis furnace comprising an upper furnace and a lower furnace juxtaposed to and positioned under the upper furnace, a screw having at least a blade helically formed on a screw shaft rotatably mounted in each said upper furnace or lower furnace, a duct connected between the upper furnace and the lower furnace and also serving as a chimney between the lower furnace and the upper furnace, with each said screw driven by a motor, and at least a heating device disposed around each said screw for heating the feedstock as conveyed within the screw, a feed port formed on a leftmost end portion of the upper furnace for feeding tire chips into the upper furnace, a gas outlet formed on a rightmost end portion of the upper furnace for leading gasified product outwardly to be separated as condensed cracking oil and uncondensed cracking gas, and a discharge port formed on a left end of said lower furnace for discharging carbon black as produced.
Dependencies are inferred from the claim text.