Multi-stage plasma-catalytic coupling biomass pyrolysis gas efficient upgrading method and device
By employing a multi-stage plasma-catalyst coupled biomass pyrolysis gas method, utilizing dielectric barrier discharge and modified catalysts, and incorporating CO2 gas into the reaction, efficient tar cracking and gas quality improvement are achieved. This solves the problems of high tar content and easy carbon deposition in biomass pyrolysis gas, and improves the calorific value of the gas and system stability.
Patent Information
- Application Number
- CN202610856133.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, biomass pyrolysis gas contains a high proportion of tar and non-combustible components, resulting in low gas calorific value and easy coking and blockage. The plasma treatment efficiency is insufficient, and the catalyst is prone to carbon buildup and deactivation, making it difficult to meet the demand for high-quality fuel gas.
A multi-stage plasma-catalytic coupling method is adopted, which generates non-thermal plasma for initial pyrolysis through dielectric barrier discharge, and combines it with AAEMs-modified iron-based biochar catalyst for plasma-catalytic coupling reaction. CO2 gas is introduced to participate in dry reforming reaction, constructing a discontinuous conductive path and setting up a tar reflux system for recycling.
It significantly reduces tar content, improves reaction efficiency, enhances gas quality, reduces energy consumption, and achieves catalyst stability and long-term system operational stability.