Inner Mongolia Biomass Co-Firing Demo Project

Background and Project Context

The Inner Mongolia Biomass Co-Firing Power Generation Demonstration Project represents a strategic collaboration between regional thermal power operators and Kingwood to address coal-fired power plants’ decarbonization requirements. Inner Mongolia’s energy sector faces dual pressures: maintaining baseload electricity supply for industrial demand while meeting national carbon reduction targets under China’s 2060 carbon neutrality roadmap.

Thermal power plants in northern China traditionally rely on coal from nearby mines, but regulatory pressure and carbon pricing mechanisms are driving operators to explore biomass co-firing as a near-term decarbonization pathway. The transcript describes this project as “a benchmark for regional new energy cooperation,” indicating it serves as a replicable model for other coal plants in the region. The customer selected Kingwood based on the company’s system integration capabilities and experience designing enclosed, automated production lines that meet power sector fuel quality standards.

Biomass co-firing allows existing coal infrastructure to reduce emissions without the capital cost of full fuel switching or early retirement. According to IEA Bioenergy Task 32, China’s biomass power generation capacity reached 42 GW in 2023, with co-firing representing the fastest-growing segment for coal plant decarbonization. This project demonstrates how regional agricultural and forestry residues can be converted into standardized fuel pellets compatible with coal handling systems.

Equipment Configuration

Kingwood designed the production line around three core principles stated in the transcript: integration, dust-free operation, and automation. The system follows Kingwood’s standard wet-feed pellet production architecture, handling high-moisture biomass feedstock through sequential processing stages.

The configuration includes a drum chipper for size reduction of woody biomass, followed by a hammer mill for coarse grinding. A drum dryer reduces moisture content from field levels to the 8-10% range required for pelletizing and power plant combustion. After drying, a second hammer mill stage produces fine particles suitable for the ring die pellet mill. The transcript does not specify which Kingwood pellet mill model was installed, though projects targeting power plant fuel supply typically use the JWZL-928 or JWZL-1068 models for their 4-5+ t/h capacity range.

Post-pelletizing equipment includes a counter-flow cooler to reduce pellet temperature and a packaging system for bulk handling. The entire line operates under enclosed conditions with integrated dust collection, addressing the transcript’s emphasis on “full-process clean production.” Power plants require dust-free fuel delivery to prevent fouling of coal conveyors, bunkers, and burner systems.

The transcript highlights a “high-efficiency dust and dehumidification system” as a key feature. This likely refers to cyclone separators or baghouse filters integrated with the dryer exhaust stream, capturing both water vapor and particulate emissions. Meeting “strict environmental requirements” for a power plant site typically means compliance with GB 13223 (Emission Standard of Air Pollutants for Thermal Power Plants) and local air quality permits.

Project Scope and Output

The transcript does not provide specific capacity figures, but describes the project as enabling “large-scale biomass application in power generation.” For context, a typical 300 MW coal-fired unit co-firing 10% biomass by heat input would require approximately 50,000-80,000 metric tons of biomass pellets annually, depending on operating hours and boiler efficiency. This translates to a production line capacity in the range of 6-10 t/h assuming 8,000 annual operating hours.

The project processes regional biomass feedstock, likely agricultural residues (corn stover, wheat straw) and forestry waste common to Inner Mongolia’s agricultural zones. The transcript emphasizes “smooth synergy between biomass energy and thermal power systems,” indicating the pellets meet the customer’s fuel specifications for size distribution (typically 6-8 mm diameter), bulk density (≥600 kg/m³), and ash content.

Kingwood’s role extended beyond equipment supply to include system design, installation supervision, and commissioning support. The transcript states the project “combines our partners’ strong resources with Kingwood’s professional expertise,” suggesting a turnkey delivery model where Kingwood provided engineering and the customer or a local partner handled civil works and feedstock logistics.

The project’s designation as a “demonstration project” implies it includes monitoring and data collection to validate technical and economic performance for replication at other sites. Successful demonstration projects in China’s energy sector typically lead to provincial or national policy support for wider deployment.

Engineering Highlights

The transcript identifies three engineering priorities that distinguish this project from standard biomass pellet production lines:

Customized solutions meeting power plant standards: Coal-fired power plants impose stricter fuel specifications than agricultural or residential pellet markets. Pellet durability must withstand pneumatic conveying and silo storage without excessive fines generation. Ash chemistry must avoid slagging and fouling in boilers designed for coal. Kingwood’s design process for this project involved matching pellet properties to the customer’s existing fuel handling infrastructure and boiler characteristics.

Enclosed dust-free operation: The transcript emphasizes “integration, dust-free operation, and automation” as core design concepts. Enclosed material transfer points, negative pressure dust collection, and sealed conveyors prevent fugitive emissions that would violate power plant site environmental permits. This approach also improves worker safety and reduces product loss during handling.

High-efficiency dehumidification: Removing moisture from biomass feedstock accounts for 40-60% of pellet production energy consumption. The drum dryer configuration used in this project allows direct heat transfer from combustion gases to wet biomass, achieving thermal efficiencies above 70%. Efficient moisture removal is critical for both pellet quality (preventing microbial degradation during storage) and power plant combustion performance.

The transcript notes the project “verifies the feasibility of biomass co-firing and showcases Kingwood’s system integration capabilities.” This suggests the customer had concerns about technical risk, and the project’s successful commissioning provides operational data to support investment decisions at other coal plants. According to ETIP Bioenergy, biomass co-firing can reduce lifecycle CO₂ emissions by 85-95% compared to coal combustion when using sustainably sourced feedstock, making it an attractive compliance pathway under carbon pricing regimes.

Kingwood’s Three-Standardization Framework—standardized design, standardized manufacturing, and standardized service—enabled rapid deployment of a proven system architecture adapted to the customer’s specific site conditions and fuel requirements. This approach reduces engineering risk and commissioning time compared to fully custom designs.

The project supports China’s broader energy transition goals by demonstrating how existing thermal power assets can contribute to carbon reduction targets without premature retirement. For procurement teams evaluating biomass co-firing projects, this case illustrates the importance of selecting equipment suppliers with power sector experience and integrated system design capabilities rather than standalone pellet mill vendors.

Sources

• YouTube video eXHihzThF0Y (Kingwood site footage)
• IEA Bioenergy Task 32, “Biomass Co-firing in Coal Power Plants” (2023)
• ETIP Bioenergy, “Biomass Co-firing: Technology and Emissions Performance” (2024)