A continuous pyrolysis biochar production containment system and method

By using a variable pitch compression structure on the feed side and an upward-inclined discharge cylinder design on the discharge side, combined with inert gas filling and cooling path, the problem of insufficient sealing in the continuous pyrolysis device was solved, achieving efficient sealing and stable operation, and reducing system complexity and operational risks.

CN122587744APending Publication Date: 2026-08-18WUHAN HYDE NEW ENERGY EQUIP CO LTD
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Patent Information

Application Number
CN202610670611.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-15
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing continuous pyrolysis units have insufficient sealing capabilities at the feed and discharge ends, allowing air to easily penetrate into the main pyrolysis furnace. High-temperature biochar at the discharge end is also prone to contact with air, resulting in insufficient stability during continuous operation. In particular, it is difficult to meet comprehensive requirements under continuous feeding, continuous pyrolysis, and continuous discharge conditions.

Method used

A mechanical plug sealing section is formed by adopting a variable pitch compression structure on the feed side, and a granular carbon seal section is formed by the upward tilting discharge cylinder on the discharge side in conjunction with the discharge screw. Combined with inert gas filling and cooling path, the sealing system is designed in a coordinated manner to improve the overall sealing capacity and operational reliability.

Benefits of technology

The improved sealing of the feed channel reduces the risk of air infiltration, ensures safe cooling of biochar on the discharge side, enhances the system's operational stability and safety under continuous operation, and reduces system complexity and maintenance costs.

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Abstract

The present application relates to the technical field of biomass thermo-chemical conversion and carbon removal, and particularly relates to a continuous pyrolysis biochar production sealing system and method, which comprises a feeding assembly, a pyrolysis main furnace and a discharging assembly; a feeding screw in the feeding assembly is provided with a variable-pitch compression structure to form a mechanical bolt seal section in a feeding cylinder; a discharging cylinder in the discharging assembly is upwardly inclined and cooperates with a discharging screw to form a granular carbon seal section in the discharging cylinder; the sum of effective lengths of the mechanical bolt seal section and the granular carbon seal section is not less than an effective stroke length of an internal reaction zone of the pyrolysis main furnace; the discharging assembly can further comprise a jacketed cylinder structure, a hollow screw shaft, a cooling liquid conveying device and a rotary joint to continuously cool the high-temperature biochar. The present application can improve the sealing capacity and operation stability of the pyrolysis main furnace on both sides under the continuous pyrolysis working condition.
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