A pyrolysis furnace for treating waste tires and its treatment process

Abstract

The invention provides a technical solution for a pyrolysis furnace and a treatment process for treating waste tires. The upper and lower parts of the furnace body of this solution are in the shape of a trapezoidal cone. There is a feed port on the top surface of the furnace body and a discharge port on the bottom surface. , there is an annular exhaust shroud on the outside of the upper conical part of the furnace body. The outer wall of the exhaust shroud is connected to the exhaust main pipe, and the inner wall is connected to multiple exhaust branch pipes that communicate with the furnace body cavity; the lower conical part of the furnace body There is an annular air inlet enclosure on the outside. The outer wall of the air inlet enclosure is connected to the air inlet main pipe, and the inner wall is connected to multiple air inlet branch pipes that communicate with the furnace body. There is an internal heat air inlet pipe and an internal heat exhaust pipe in the furnace body. Internal heating tube. The treatment process of this solution is to use the pyrolysis furnace of the present invention to pyrolyze waste tire fragments, obtain crushed steel wire and carbon black products from the pyrolysis slag, and obtain the pyrolysis gas through a cyclone separator and a spray tower The heavy oil and residual oil products are then passed through the tube condenser to obtain the light oil products, and the remaining pyrolysis gas is heated by the combustion furnace and returned to the pyrolysis furnace to provide high-temperature flue gas.

Description

technical field [0001] The invention relates to equipment and technology for treating and utilizing waste containing high-molecular organic matter, in particular to a pyrolysis furnace for treating waste tires and a processing technology. Background technique [0002] In the prior art, the waste tire pyrolysis process can be divided into direct heating technology and indirect heating technology. The direct heating technology, as described in patent application numbers 200680054973.7, 200980140238.1 and 200980137677.7, uses the flue gas after pyrolysis charcoal combustion to heat the inert circulation carrier gas first, and then directly contacts the high-temperature inert circulation carrier gas with waste tires for pyrolysis. This will consume a large amount of pyrolytic carbon products, and in the cooling process of mineral oil vapor, accompanied by the cooling of a large amount of circulating carrier gas, the thermal efficiency of the system will be reduced, and the heati...

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Problems solved by technology

This will consume a large amount of pyrolytic carbon products, and in the cooling process of mineral oil vapor, accompanied by the cooling of a large amount of circulating carrier gas, the thermal efficiency of the system will be reduced, and the heating surface and investment of cooling equipment will be increased.

This avoids the above-mentioned problems in indirect heating technology. Indirect heating technology generally adopts horizontal rotary equipment for production, as described in patents such as application numbers 201010223429.9 and 200610053685.1. There are problems such as easy leakage of harmful gases in the gaps between components, and some indirect heating processes cannot even run continuously, which is the deficiency of the existing technology

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