Double-spiral continuous cracking furnace

Abstract

The invention discloses a double-spiral continuous cracking furnace, which comprises a tubular furnace body and two propelling stirring shafts, wherein the two propelling stirring shafts are in parallel arrangement; material pushing spiral blades are fixedly arranged on the propelling stirring shafts; the material pushing spiral blade of one propelling stirring shaft is inserted into a gap of the material pushing spiral blade of the other propelling stirring shaft; the material pushing spiral blades of the two propelling stirring shafts have opposite spiral directions; a plurality of stirring teeth are fixedly arranged on the material pushing surfaces of the material pushing spiral blades; a furnace body heating device is arranged outside the tubular furnace body. The material pushing spiral blades respectively push materials in respective propelling cavities to realize the mutual stirring moving; shorter and smaller materials are stirred by stirring teeth during the advancing; longer and larger materials are mutually torn and crushed by the stirring teeth; the materials are continuously stirred, torn and pushed when being heated in the tubular furnace body; the physical and chemical forms of the materials are continuously changed; the material cracking process is continuous, stable and thorough; the double-spiral continuous cracking furnace belongs to the breakthrough improvement on cracking equipment.

Description

technical field

[0001] The invention relates to a cracking equipment, in particular to a continuous cracking furnace. Background technique

[0002] In the process of garbage treatment, a large amount of solid waste such as waste plastics and waste tires will be obtained. The treatment of these wastes has become a major technical problem, and the usual method is cracking to produce cracked gas and cracked crude oil. Recycling and utilization of resources is realized; most of the cracking equipment in the prior art cannot be continuously produced, and it is necessary to start the furnace, cool, slag, feed, close the furnace, heat and crack, and then repeat the above steps after completion. All need to be cooled, a large amount of energy is wasted, and the cracking efficiency is extremely low. There are also continuous cracking equipment, which has the disadvantages of uneven mixing of materials, cracking is easily wrapped by charcoal ash, cracking is not complete, and crackin...

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