Work

Comprehensive Review and Prospect for Combustion and Ignition Characteristics of Gas Co-Firing with Pulverized Coal

Year: 2025

Type: article

Abstract: In response to the challenges of deep peak shaving of coal-fired power plants and co-firing with combustible gases for achieving carbon neutrality and peaking emissions, this paper synthesizes combustion and ignition models for pulverized coal, with particular emphasis on volatilization analysis, gas-phase combustion, solid-phase combustion, and NOx formation mechanisms. It reviews studies on the combustion behaviors of pulverized coal when co-firing with gases such as CH4, H2, and NH3, as well as the application of typical co-firing gases in pulverized coal furnaces. The ignition process hinges on whether the concentration of released combustible gases reaches the combustion range and ignition temperature, necessitating detailed volatilization analysis models and simplified gas-phase reaction models. Co-firing enhances combustion stability by facilitating gas ignition and sustained combustion, while pulverized coal achieves extended burning duration. Fuel-type NOx serves as a critical factor in ensuring the reliability of NOx numerical simulations and should be integrated with carbon combustion models.

Source: Processes

DOI: 10.3390/pr14010017

Authors: Hongzhen Cao, Bin Zhang, Guanmin Zhang, Chang Yu, Lili Zhang

Institutions: Shandong Electric Power Engineering Consulting Institute Corp, Shandong University, Shandong Jianzhu University

Language: English

Topic: Coal Combustion and Slurry Processing

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action

Open Access status: gold

Estimated APC paid: $2,896