Combined upgrading method of flue gas modified wheat straw and lignite mixed fuel
Through the combined quality improvement method of flue gas modified wheat straw and lignite, the low-temperature waste heat treatment of wheat straw and lignite powder is used to solve the hydrophobicity and energy consumption of lignite, the calorific value and hydrophobicity of the fuel are improved, the combustion exhaust temperature and NO emissions are reduced, and the efficient and energy-saving fuel utilization is achieved.
Patent Information
- Application Number
- CN202411915350.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2044-12-24
AI Technical Summary
The prior art is difficult to enhance its hydrophobicity and maintain its active structure while removing lignite moisture, and the energy consumption in the drying process is high, resulting in an increase in quality improvement costs.
The flue gas modification method is used to mix wheat straw and lignite powder, and dry it in a flue atmosphere of 200-270°C for 25-30 minutes. The low-temperature waste heat of the flue gas is used to seal the pore structure of the lignite particles, passivate the hydrophilic groups, compensate for the loss of combustible components, and improve fuel quality and hydrophobicity.
The calorific value and hydrophobicity of the mixed fuel are improved, the combustion exhaust temperature and NO conversion rate are reduced, the moisture readsorption amount is reduced, and the fuel utilization is efficient, energy-saving, carbon-reducing.