Low concentration gas power generation technology is mainly applied to internal combustion engine power generation, gas turbine power generation, and oxidation power generation. Due to the influence of coal mining technology, the concentration of gas extracted by high negative pressure systems and ground drilling is generally greater than 30%, mainly used for small gas turbines and high concentration internal combustion engines for power generation; The concentration of gas extracted by low negative pressure systems is generally lower than 30%, mainly used for low concentration internal combustion engine power generation; The concentration of exhaust gas (exhaust gas) in the mine return air shaft is usually below 1%. The mixture of low concentration gas and mine exhaust gas (or low concentration gas dilution gas) is mainly used to enter the thermal countercurrent reactor and catalytic oxidation reactor for oxidation power generation.

 

Main technical features:

Through the use of water level self-control water seal flame arrester metal corrugated belt gas pipeline special flame arrester water mist and coal mine drainage gas mixed transmission and other fire prevention technology, it creates conditions for the safe transmission and utilization of drainage gas.

 

By utilizing the fire extinguishing mechanism of fine water mist, the fine water mist is mixed with coal mine drainage gas for transportation, eliminating potential static electricity and fire sources caused by natural or human factors during pipeline transportation. When flames are generated at both ends of the conveying pipeline, they can quickly extinguish the flame inside the pipeline and effectively prevent the flame from spreading forward or backward.

 

The water mist is separated from the gas at the end of the conveying pipeline through a dehydrator, and is pressurized and recycled by a water pump, reducing the water consumption of the system.

 

The gas generator unit adopts technologies such as electrically controlled mixed metal corrugated belt gas pipeline fire resistance, effective anti backfire measures, and adapts to the characteristics of large changes in gas pressure and concentration during coal mine drainage; The use of an automatic control system for monitoring ensures smooth operation of the unit and a high degree of automation.

 

Coal mine gas power generation can effectively solve coal mine gas accidents and improve coal mine safety production conditions. It is also conducive to increasing clean energy supply and reducing greenhouse gas emissions, achieving multiple goals of protecting life, resources, and the environment. Low concentration gas power generation needs to solve two problems: firstly, each coal mine itself is different and constantly changing, making it difficult for traditional power generation units to "adapt to changes with immutability"; The second issue is the safe transportation of low concentration gas.

 

The low concentration gas generator unit adopts electronic control gas mixer technology, which can automatically control the air fuel ratio to adapt to changes in gas concentration. At the same time, the low concentration gas safety transportation technology adopts fine water mist technology to solve the problem of ground safety transportation of low concentration gas.