Biomass liquid fuel and metal particle co-combustion staged swirl combustion device

Abstract

The invention relates to a biomass liquid fuel and metal particle co-combustion staged swirl combustion device and belongs to the field of combustion. Renewable biomass liquid fuel spray introduced inthrough an axial inlet and oxidant gas led in through a first-stage swirl are mixed and burnt, and a large quantity of heat, CO2, H2O and other products are generated through reaction. After stable combustion of the liquid fuel is achieved, a metal particle carrying current is poured into an axial center through hole, metal particles are lit in a high-temperature fuel gas field generated by the liquid fuel and react with CO2, H2O and the like, heat is further generated, and combustible gases such as CO and H2 are generated. Excess oxidant gas is introduced in through a second-stage swirl inlet and is further mixed and burnt with unburned reactants at an outlet of a first reaction area, and a second reaction area is formed in a cylindrical combustor of the large inner diameter. Through thebiomass liquid fuel and metal particle co-combustion staged swirl combustion device, the biomass liquid fuel and the metal particles can be burnt in a staged mode, combustion of the metal particles is maintained on the basis of the heat generated by combustion of the biomass liquid fuel, and joint combustion of the renewable fuel and the metal particles is achieved.

Description

technical field [0001] The invention relates to a graded swirl combustion device for co-combustion of biomass liquid fuel and metal particles, which belongs to the field of combustion. Background technique [0002] In recent years, a large amount of fossil fuel combustion products have caused serious environmental pollution, such as smog, extreme weather, acid rain, etc., seriously affecting social production activities and endangering human health. In addition, with the continuous consumption of fossil fuels, the energy problem is becoming more and more serious. Therefore, the development of renewable energy and efficient clean combustion technology is imminent. Among renewable energy sources, liquid fuels such as methanol and ethanol have a wide range of sources and abundant reserves, but due to their relatively low calorific value, they have not been widely used in industrial power plants. Compared with fossil fuels, its advantages such as low pollution, renewable and l...

AI Technical Summary

Problems solved by technology

At present, metal particles have been widely used in solid rocket propellants, but their application and research are mostly concentrated on micron-sized metal powders such as aluminum, magnesium, boron, etc., which have high combustion temperature and high strength, and are relatively used in conventional combustion equipment. tougher

At the same time, the surface of metal particles is often covered with a metal oxide layer with a high melting point, which poses a great challenge to ignition; during the combustion process, tiny particles are prone to agglomeration and slagging in a complex flow field, which seriously restricts the wide application of metal fuels. use

Images