Biomass Torrefaction System

The biomass trefaction system employing a paddle reactor addresses the temperature control and airtightness issues of conventional reactors, achieving high-yield, high-quality semi-carbonization of biomass with precise temperature control and reduced ignition risks.

JP7649278B2Active Publication Date: 2025-03-19印出 晃
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Patent Information

Application Number
JP2022130718
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-08-18
Publication Date
2025-03-19
Estimated Expiration
2042-08-18

AI Technical Summary

Technical Problem

Conventional reactors used for semi-carbonization of biomass face challenges in achieving high-precision temperature control, leading to inconsistent product quality, low yields, and increased risk of ignition due to poor airtightness.

Method used

A biomass trefaction system utilizing a paddle reactor with a fixed cylindrical body and rotating paddles allows for direct temperature measurement inside the reactor, enabling high-precision temperature control for each process stage, improved airtightness, and reduced risk of ignition.

Benefits of technology

The system achieves stable and high-quality semi-carbonization of biomass with yields of 70% or more and a low heat generation amount of 5,000 kcal/h or more, while minimizing tar generation and maintaining a hypoxic environment.

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Abstract

To provide a torrefaction system which is suitable for producing a torrefacted product of biomass with a yield of 70% or more and a lower heating value of 5,000 kal / h or more.SOLUTION: A biomass torrefaction system 1 uses a paddle type reactor as a reactor 4 for executing torrefaction treatment of heating biomass at 250 to 350°C with air blocked. Differently from a rotary furnace, it is possible that a temperature sensor is arranged at any position not interfered with a paddle 24 at the inside 11 of the reactor 4 to directly measure the atmospheric temperature and material temperature at the inside. At the inside 11 of the reactor, since the temperature in each treatment process of the torrefaction executed along the conveyance direction of a biomass W2 can be measured so as to be reflected in control, the control of the temperature management or the like in each process can be executed at high precision in an optimum state.SELECTED DRAWING: Figure 1
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