Yuchai 12VCN coal‑mine gas engine powers the Dahe coal‑mine gas power station in Liupanshui, Guizhou Province. One set of 1000 kW gas generator set has been put into service for the project.
1. Background: Dahe Coal‑Mine Gas Power Project (Liupanshui, Guizhou)
Located in Liupanshui, Guizhou Province, an important coal‑energy base in southwest China, the Dahe coal‑mine gas power station makes full use of coal‑mine methane (CMM) drained from local coal mines. If not properly utilized, this low‑concentration coal‑mine gas will be directly discharged into the atmosphere, causing serious greenhouse‑gas effects.
The project features an installed capacity of 1 MW, adopting on‑site extracted coal‑mine gas as fuel for power generation. The produced electricity can meet part of the on‑site power demand, and surplus power can be connected to the public power grid. The site is characterized by fluctuating methane concentration, high humidity and heavy dust, which impose high requirements on gas adaptability and continuous operation reliability of gas generator sets. The project achieves waste‑to‑energy utilization, cuts carbon emissions and brings sound economic benefits for the operator.
2. Why Adopt Yuchai 12VCN 1000 kW Coal‑Mine Gas Generator Set
The Yuchai 12VCN series gas engine is tailor‑made for low‑concentration coal‑mine gas working conditions. Equipped with optimized gas mixing and closed‑loop combustion control system, it can adapt to frequent methane concentration fluctuations of mine‑drained gas.
The 1 MW project adopts one 1000 kW modular unit. Even for single‑unit configuration, the unit maintains stable performance under complex mine‑site conditions. It consumes waste coal‑mine gas drained from coal mines and converts vented methane into clean electric energy. It helps customers reduce grid power purchase expenditure and mitigate greenhouse‑gas emissions, advancing circular‑economy development in coal‑producing regions.
3. Key Technical Specifications
Engine Model: Yuchai 12VCN, V‑type 12‑cylinder gas engine
Rated Power: 1000 kW per unit; total installed capacity 1 MW (1 unit)
Fuel Source: Low‑concentration coal‑mine gas / coal‑bed methane (CMM)
Configuration: Open‑frame design
Rated Speed: 1000 r/min
Rated Frequency: 50 Hz
Control System: Real‑time gas‑source monitoring, remote monitoring function
Note: Optimized for coal‑mine site conditions with variable methane concentration, high dust and high humidity
4. Operational Value After Commissioning
Since commissioning, the Yuchai 12VCN 1000 kW gas‑generator set has achieved stable operation at Dahe power station. The unit efficiently converts extracted coal‑mine gas into electric power for on‑site consumption and grid‑connection.
Benefiting from excellent gas adaptability, the unit is capable of coping with unstable methane concentration from coal‑mine drainage and guarantees steady power output. The project delivers prominent environmental benefits by avoiding direct methane venting. The proven modular unit design lowers the whole‑life‑cycle operation & maintenance cost of the power plant.
5. Frequently Asked Questions (FAQ)
Q: What fuel is applied in this project?
A: The unit runs on low‑concentration coal‑mine gas (coal‑bed methane) collected from local coal mines, recycling the by‑product that would otherwise be vented to atmosphere.
Q: What are the core advantages of Yuchai 12VCN for this Guizhou coal‑mine gas project?
A: Yuchai 12VCN is specially calibrated for coal‑mine gas scenarios. Its closed‑loop combustion and gas adjustment system can accommodate methane concentration fluctuations commonly seen in coal‑mine drainage, ensuring reliable continuous operation under high‑dust and high‑humidity mine‑site environments.
Q: Can this single 1000 kW unit realize grid‑feed?
A: Yes. After matching with corresponding grid‑connection auxiliary facilities, surplus generated power can be fed into the public power grid while satisfying on‑site power consumption.