Influenced by the energy distribution in China, most of the industrial hot blast furnaces are all coal fired hot air furnaces. The pollutants such as SO2 and NOx produced in the process of coal combustion have caused great pollution to the atmosphere. In order to improve the air quality, many cities have phased out or modified the small and medium coal-fired hot blast furnaces.Biomass hot blast furnace is developed on the basis of the combustion characteristics of biomass fuel. It has the advantages of clean environmental protection, energy saving and high efficiency. The biomass briquette fuel has been crushed and compressed, with high density and high moisture content. If the coal-fired hot air stove is not reformed in the current operation, it is easy to use biomass briquette fuel and the hot blast furnace is easy. The emergence of small power, easy to smoke black smoke and other phenomena.
The transformation of a coal-fired hot blast stove into a biomass hot blast stove can effectively reduce the emission of SO2 and NOx, on the other hand, avoid the economic burden of using the fuel (gas) hot blast stove. It also plays an important role in promoting the development of renewable energy, the realization of the comprehensive utilization of organic wastes in agriculture and forestry and the optimization of energy structure. Use.
However, because of our country's biomass fuel industry is in the early stage of development, the market is not mature, the quality and price are different, the supply and demand are not stable, the industry standard is not sound, and the relevant government departments should formulate corresponding policies to support and promote the industrial development.
It is feasible both economically and technically to transform a coal-fired hot blast stove into a biomass hot blast stove, which can effectively reduce the emission of SO2. The flue gas can reach the national emission standard and has obvious environmental benefits. It can promote the development of renewable energy and realize the comprehensive utilization of organic waste materials of Agriculture and forestry, and has a certain society. And economic benefits.
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