A process for the non-oxidative thermal degradation of a rubber containing waste including: transporting the rubber containing waste along a horizontal axis of a hermetically sealed cylindrical reactor including: an inlet and an outlet, one or more thermal reaction zones arranged between the inlet and the outlet, wherein each thermal reaction zone is provided with: one or more heating elements controllable to heat the thermal reaction zone to an operating temperature for mediating the non-oxidative thermal degradation of rubber in the rubber containing waste, and one or more gas outlets for withdrawing volatile gas or gases evolved during the non-oxidative thermal degradation of the rubber; and a screw auger located within the reactor, the screw augur configured to rotate in both the forward and reverse directions to agitate and transport the rubber containing waste through the one or more thermal reaction zones in both the forward and reverse directions and to the outlet; heating the rubber containing waste, in the one or more thermal treatment zones, to a temperature above the degradation temperature of rubber for a time sufficient to produce the volatile gas or gases and the char product; operating the screw auger in both the forward and reverse directions to agitate the rubber containing waste within the reactor; and advancing the rubber containing waste along the horizontal axis to the outlet.

A rotary furnace (1) for pyrolyzing a feedstock, the furnace (1) comprises a rotating vessel (12) having an upstream end (12A) with an inlet (16) for receiving feedstock and a downstream end (12B) with an outlet (17A, 17B) for egress of pyrolysis products, and a gas extraction pipe (13) extending within and along the rotating vessel (12) from the downstream end (12B), the gas extraction pipe (13) having an opening (18) upstream of the downstream end (12B) to accept gaseous components generated in use.

A rotary furnace (1) for pyrolyzing a feedstock, the furnace (1) comprises a rotating vessel (12) having an upstream end (12A) with an inlet (16) for receiving feedstock and a downstream end (12B) with an outlet (17A, 17B) for egress of pyrolysis products, and a gas extraction pipe (13) extending within and along the rotating vessel (12) from the downstream end (12B), the gas extraction pipe (13) having an opening (18) upstream of the downstream end (12B) to accept gaseous components generated in use.

A coke plant includes multiple coke ovens where each coke oven is adapted to produce exhaust gases, a common tunnel fluidly connected to the plurality of coke ovens and configured to receive the exhaust gases from each of the coke ovens, multiple standard heat recovery steam generators fluidly connected to the common tunnel where the ratio of coke ovens to standard heat recovery steam generators is at least 20:1, and a redundant heat recovery steam generator fluidly connected to the common tunnel where any one of the plurality of standard heat recovery steam generators and the redundant heat recovery steam generator is adapted to receive the exhaust gases from the plurality of ovens and extract heat from the exhaust gases and where the standard heat recovery steam generators and the redundant heat recovery steam generator are all connected in parallel with each other.

The present technology is generally directed to systems and methods for optimizing the burn profiles for coke ovens, such as horizontal heat recovery ovens. In various embodiments the burn profile is at least partially optimized by controlling air distribution in the coke oven. In some embodiments, the air distribution is controlled according to temperature readings in the coke oven. In particular embodiments, the system monitors the crown temperature of the coke oven. After the crown reaches a particular temperature range the flow of volatile matter is transferred to the sole flue to increase sole flue temperatures throughout the coking cycle. Embodiments of the present technology include an air distribution system having a plurality of crown air inlets positioned above the oven floor.

A horizontal pyrolysis furnace has a kiln and two barrels. The two barrels are respectively a processing barrel rotatably disposed in the kiln and a takeover barrel detachably connected with the processing barrel. Each one of the two barrels has a gate assembly and at least one spiral guiding plate. The gate assembly of the processing barrel is mounted on an end of the processing barrel, and extends out from the kiln. The two gate assemblies of the two barrels are detachably connected such that the two barrels are able to rotate synchronously. The at least one spiral guiding plate is fixed on an inner surface of one of the two barrels, and the spiral guiding plates of both barrels have an identical helical direction.

A horizontal pyrolysis furnace has a kiln and two barrels. The two barrels are respectively a processing barrel rotatably disposed in the kiln and a takeover barrel detachably connected with the processing barrel. Each one of the two barrels has a gate assembly and at least one spiral guiding plate. The gate assembly of the processing barrel is mounted on an end of the processing barrel, and extends out from the kiln. The two gate assemblies of the two barrels are detachably connected such that the two barrels are able to rotate synchronously. The at least one spiral guiding plate is fixed on an inner surface of one of the two barrels, and the spiral guiding plates of both barrels have an identical helical direction.

A process and an apparatus for pyrolysis of mixed plastic feedstock producing petroleum products are described. In one example, a process for producing petroleum products includes charging feedstock of mixed polymer materials into a reactor apparatus. Heat energy is applied to the feedstock while advancing the feedstock through the reactor apparatus in an anaerobic operation. The energy input to the reactor apparatus is controlled by controlling a temperature gradient within the reactor vessel to produce petroleum gas product. The process involves in situ chemical reactions comprising cracking and recombination reactions that that are controlled to convert solid hydrocarbonaceous portion of the feedstock to molten fluids and gases inside the reactor vessel and to produce gaseous petroleum products which exit the reactor vessel. The separated solid residue from the pyrolysis process is also removed from the reactions vessel.

A process and an apparatus for pyrolysis of mixed plastic feedstock producing petroleum products are described. In one example, a process for producing petroleum products includes charging feedstock of mixed polymer materials into a reactor apparatus. Heat energy is applied to the feedstock while advancing the feedstock through the reactor apparatus in an anaerobic operation. The energy input to the reactor apparatus is controlled by controlling a temperature gradient within the reactor vessel to produce petroleum gas product. The process involves in situ chemical reactions comprising cracking and recombination reactions that that are controlled to convert solid hydrocarbonaceous portion of the feedstock to molten fluids and gases inside the reactor vessel and to produce gaseous petroleum products which exit the reactor vessel. The separated solid residue from the pyrolysis process is also removed from the reactions vessel.

A solid hazardous waste pyrolysis process and full-set equipment including a pyrolysis box for hazardous waste and intermittent pyrolysis equipment. The equipment includes an outer and rotatable inner barrel; at least one pyrolysis material placement area is formed in the inner barrel; the placement area formed by multiple groups of guide plates circumferentially arranged on the inner wall of the barrel and baffles arranged on the top of plates at the two ends; each group of plates include vertical and sieve plates that are connected. Hazardous waste placed in the pyrolysis box; a box body is placed between the baffles of the pyrolysis material placement areas; after a pyrolysis device is sealed, heat is carried out to start pyrolysis; the box body rotates at the bottom of the inner barrel; and a material is heated, melts and falls onto the reaction medium below, completing pyrolysis of solid hazardous waste.