The basic principle of biomass gasification technology is to convert biomass into gas, and then use the gas to drive gas-fired power generation equipment to generate electricity. It is one of the most effective and cleanest ways to utilize biomass because it is difficult to burn and has the disadvantage of being scattered, and it can give full play to the advantages of compact and less polluting gas-fired power generation technology.
1.Converting solid biomass into gaseous fuel
2.Gas purification, the gas from gasification has certain impurities, including ash, coke and tar, etc., which need to be removed through the purification system to ensure the normal operation of gas-fired power generation equipment
3.Gas-fired power generation, using gas turbines or gas-fired internal combustion engines for power generation, some processes can add waste heat boilers and steam turbines in order to improve the efficiency of power generation.
1.Flexibility: Since biomass gasification power generation can use internal combustion engines, gas turbines, or even combined with waste heat boilers and steam power generation systems, biomass gasification power generation can choose the right power generation equipment according to the size of the scale to ensure a reasonable power generation efficiency at any scale. The flexibility of this technology can well meet the characteristics of decentralized biomass utilization.
2.Better cleanliness: Biomass itself is a renewable energy source, which can effectively reduce the emission of harmful gases such as CO2 and SO2. And the gasification process generally has a low temperature (about 700-900oC), and the amount of NOx generation is small, so it can effectively control the NOx emission.
3.Economy: The flexibility of biomass gasification power generation technology can ensure the effective and good economy of this technology in small scale. Meanwhile, the simple process of gas power generation and compact equipment also make biomass gasification power generation technology has smaller investment than other renewable energy power generation technologies, so in general, biomass gasification power generation technology is the most economical power generation technology among all renewable energy technologies, and the comprehensive power generation cost is close to The combined cost of power generation is close to that of small-scale conventional energy sources.