Biomass power generation

But the energy density of biomass is a bit low; Guangzhou Energy Research Institute should focus on using straw for power generation. .

The source is extensive, but low conversion rates have always been a problem. **It hasn’t been truly put into use yet, and it’s difficult to develop this technology.

The calorific value is too low; nowadays many biomass power plants use a significant amount of coal, which undermines their original purpose

　　Biomass power generation primarily uses agricultural, forestry, and industrial waste as raw materials; urban waste can also be used, with power being generated through direct combustion or gasification. 　　In recent years, the supply and demand for energy and electricity in China have become increasingly tight, which has led to significant attention from power generation industries both domestically and internationally to the development and utilization of biomass resources – resources that are abundant, highly renewable, beneficial for environmental improvement, and sustainable. Thus, the biomass power generation industry came into being. 　　World biomass power generation originated in the 1970s, when, following the global oil crisis, Denmark began to actively develop clean renewable energy sources, giving strong support to the use of biomass such as straw for power generation. Since 1990, biomass power generation has seen significant development in many countries in Europe and the United States. 　　China is a major agricultural country with abundant biomass resources. Various crops generate over 600 million tons of straw each year, of which about 400 million tons can be used as energy. The total biomass of trees across the country is around 19 billion tons, of which 900 million tons can be utilized, giving a total amount of about 300 million tons that can be used as energy. If utilized effectively, its development potential is enormous. 　　To promote the development of biomass power generation technology, since 2003, **three straw power generation demonstration projects in Jinzhou, Hebei; Duanxian, Shandong; and Rudong, Jiangsu have been approved successively. The Renewable Energy Law was enacted, along with various supporting policies such as preferential grid connection tariffs for biomass power generation, which has led to rapid growth in biomass power generation, particularly that using straw as fuel. 　　In recent years, large state-owned, private, and foreign-funded enterprises such as power grid companies and the five major power generation groups have invested in the construction and operation of China’s biomass power generation industry. By the end of 2007, ** and the development and reform commissions of various provinces had approved 87 projects, with a total installed capacity of 2.2 million kilowatts. There are over 15 biomass direct combustion power generation projects that have been built and put into operation nationwide, with more than 30 projects under construction. It can be seen that the development of China’s biomass power generation industry is progressing well. 　　In line with the development goals set out in the **11th Five-Year Plan**, an installed capacity of 5.5 million kilowatts for biomass power generation is to be established in the future. The previously released **Medium- and Long-Term Development Plan for Renewable Energy** also sets a goal of achieving an installed capacity of 30 million kilowatts for biomass power generation by 2020. Furthermore, it has been decided to allocate funds to support the development of technologies related to renewable energy, as well as the establishment of industrial service systems for equipment manufacturing and testing and certification. Overall, the biomass power generation industry has broad prospects for development. Cost remains the bottleneck

At present, Guoneng and Kaidi Power have built many biomass power plants, most of which have a capacity of 10MW; it’s not clear what the performance of these plants is like.

It’s not easy to buy or collect... Once the problem of fuel sources is solved, things will become much easier

Tar and fly ash during the combustion process are difficult problems to handle, and they are issues that must be resolved

The main problem is the high collection costs, and most of the power plants currently built operate at a loss.

So it should be built near important grain-producing areas. But then again, does the use of biomass energy have to be for power generation? Are there better ways to utilize energy?

Without **subsidies** and with environmentally-friendly electricity prices imposed on these biomass power plants, they will incur even greater losses. The price of biomass straws is rising steadily. **The policies themselves are well-intentioned and a good thing, but some power plants mix in a lot of such straws in order to earn higher rates for generating electricity using environmentally friendly methods. There are also some that, although they are straw power plants, burn rice husks, peanut shells, tree bark, and wood. There is too much straw in small quantities, making it difficult to collect it; farmers prefer to bury it or burn it rather than go through the hassle of selling it for such a small amount of money. Since our country does not have large-scale foreign farms, I believe the prospects for biomass power plants are not very promising.

Among all renewable energy sources, biomass energy is the only one that is both renewable and easy to transport. In other words, it is a carrier of energy. Biomass has a high oxygen content, low energy density, large reserves, but is scattered in distribution. Biomass power generation is costly, and it does not have significant advantages over other forms of renewable energy such as wind power and nuclear power. But its biggest difference from wind and nuclear power is that it can be transported just like oil and coal. Therefore, to take advantage of the benefits of biomass energy, I believe bio-refining is the best approach, rather than biomass power generation.