Patent ID: 6657095
Filing Date: 2003-12-02
Classification: B01J,C09C,C10B,C10G,Y02P

Abstract:
A process for pyrolyzing tire chips comprising:passing the tire chips into an input end of an inclined rotary kiln, the inclined rotary kiln having an output end; saturating the tire chips with a first oil stream in the inclined rotary kiln; pyrolyzing the tire chips continuously in the inclined rotary kiln by indirectly heating the tire chips and the first oil stream by a heated gas at a given temperature at below atmospheric pressure, whereby the inclined rotary kiln rotates the tire chips within the first oil stream to allow for increased chemical interaction between the tire chips and the first oil stream to allow effective dissociation of the tire chips into a first vapor product and a solid product, the solid product and the first vapor product separated within the kiln through gravitational separation; processing the first vapor product to condense oil, wherein processing the first vapor product comprises the steps of: passing the first vapor product through a discharge hood of the inclined rotary kiln to a first condenser scrubber; spraying the first vapor product with cooled oil to condense a first oil product from the first vapor product, thereby leaving a second vapor product; passing the second vapor product through a second condenser scrubber; spraying the second vapor product with cooled oil to condense a second oil product from the second vapor product, thereby leaving a third vapor product; and producing a heated gas from the third vapor product to heat the tire chips in the inclined rotary kiln; recovering oil from the solid product and vapor product and recycling a portion of the oil to the inclined rotary kiln for saturating the tire chips; and separating the solid product to recover char there from.