Compact domestic waste pyrolysis apparatus with integrated multi-chamber secondary combustion chamber

The integrated multi-chamber pyrolysis apparatus addresses coke deposition issues by ensuring direct gas transfer and complete combustion, optimizing space and reducing emissions and costs.

US20260139831A1Pending Publication Date: 2026-05-21KAINOS RENEW INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
KAINOS RENEW INC
Filing Date
2026-01-19
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing pyrolysis apparatuses suffer from frequent operational failures and shutdowns due to coke deposition in pipeline transfers between pyrolysis and secondary combustion chambers, leading to increased fuel consumption, equipment corrosion, and degradation of insulation materials.

Method used

A compact domestic waste pyrolysis apparatus with an integrated multi-chamber secondary combustion chamber, featuring a pyrolysis furnace with a pyrolysis chamber and secondary combustion chamber connected via a communication hole, equipped with high-temperature insulation walls and a rotating furnace grate, which ensures direct gas transfer and maintains consistent high temperatures for complete combustion and thorough decomposition of pollutants.

Benefits of technology

The integrated design prevents coking, optimizes space utilization, reduces equipment footprint and costs, and minimizes emissions by ensuring complete combustion and decomposition of dioxins, while lowering NOx generation and reducing the need for activated carbon.

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Abstract

The present invention relates to the technical field of pyrolysis technology, and specifically discloses a compact domestic waste pyrolysis apparatus featuring an integrated multi-chamber secondary combustion chamber. The apparatus consists of a pyrolysis furnace, which incorporates both a pyrolysis chamber and a secondary combustion chamber. The upper section of the pyrolysis chamber is provided with a communication hole that connects to the secondary combustion chamber. In this apparatus, the pyrolysis chamber and the secondary combustion chamber are closely integrated. The generated pyrolytic gas directly enters the secondary combustion chamber, effectively preventing coking and significantly reducing the frequency of failures. The secondary combustion chamber absorbs radiant heat from the pyrolysis chamber, maintaining its temperature consistently above 850° C., which is conducive to the complete combustion of the pyrolytic gas and maximizes thermal energy release. This promotes the complete decomposition of dioxin precursors, reduces the likelihood of dioxin reformation, lowers the initial emission concentration of dioxins, and decreases the required dosage of adsorbent activated carbon. The highly integrated design of the secondary combustion chamber and the pyrolysis chamber optimizes space utilization and reduces the equipment's footprint, thereby lowering investment and construction costs.
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