Continuous steam pyrolysis apparatus and pyrolysis furnace therefor

Abstract

A continuous steam pyrolysis device and a pyrolysis furnace therefor are provided. The device comprises a heat generator, a combustion chamber and a superheated steam generator. The combustion chamber comprises a reaction chamber with a charge opening and a discharge opening, and one or more axial transporting structures installed in the reaction chamber, wherein each transporting structure has a central axis and comprises one or more proceeding zones and one or more blending zones. The total length of the blending zones along the central axis direction ranges from about 5% to about 35% of the length of the transporting structure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001]This application claims priority to Taiwan Patent Application No. 097112500 filed on 7 Apr. 2008, the contents of which are incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION [0002]1. Field of the Invention[0003]The present invention relates to a continuous steam pyrolysis apparatus, and more particularly, relates to a continuous steam pyrolysis apparatus having a unique transporting structure, which is especially used for the treatment of waste tires.[0004]2. Descriptions of the Related Art[0005]Waste tires are generally recycled in two methods. The first method is the physical processing method, in which the waste tires are broken up, then the steel wires, nylon and rubber are separated, and finally the rubber is recycled in a form of raw rubber. However, as a recycled material, the recycled rubber has poor quality and is inappropriate for use as a raw material to produce tires. The recycled rubber thus obtain...

AI Technical Summary

Benefits of technology

[0010]One objective of this invention is to provide a pyrolysis furnace, which comprises a reaction chamber and one or more axial transporting structures. The reaction chamber comprises a charge opening and a discharge opening, and the one or more axial transporting structures are installed in the reaction chamber. Each of the transporting structures has a central axis, and comprises one or more spi

Problems solved by technology

However, as a recycled material, the recycled rubber has poor quality and is inappropriate for use as a raw material to produce tires.

The recycled rubber thus obtained has a low resource utilization factor and is less economical.

This approach is disadvantageous in that the pyrolysis furnace must be subjected to a heating / cooling cycle for each batch and the pyrolysis reaction has to be interrupted between the individual batches, resulting in a limited processing speed and a low production throughput.

This makes it difficult to effectively use gases that result from the pyrolysis reaction, and tends to cause the escaping of dusts and pyro-gases.

However, even though the pyrolysis reaction can be performed continuously according to such a continuous pyrolysis-in-batch apparatus, each of the furnaces is still subjected to repeated heating and cooling, as well as the loading and unloading of batches.

Furthermore, the individual operation of each furnace makes the operation of the continuous pyrolysis-in-batch apparatuses more complex.

Moreover, such a continuous pyrolysis apparatus that uses a plurality of pyrolysis furnaces is necessarily huge and bulky in volume, and consequently limits its use in application.

When using a dry pyrolysis method, the pyrolysis furnace may explode due to a significant amount of combustible oil gases generated during the pyrolysis which is conducted at high temperature.

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