A kind of combustion method of biomass burner and biomass fuel

Abstract

The invention discloses a biomass combustor and a biomass fuel combustion method using the combustor. The biomass combustor comprises a combustion furnace, a steam boiler type furnace cover, a gas mixing and conveying component, a temperature sensor and a control device, wherein the steam boiler type furnace cover is arranged on the combustion furnace; the water is contained in the steam boiler type furnace cover; steam is generated when combusting the biomass fuel; the gas mixing and conveying component is used for mixing the steam in the steam boiler type furnace cover with the outside air and then conveying the mixed gas into the combustion furnace; the temperature sensor is located in a biomass fuel storage area of a grate; the control device is used for controlling the mixing ratio of the steam and the outside air and the conveying wind power of the gas mixing and conveying component according to the temperature acquired by the temperature sensor. The biomass combustor is capable of effectively controlling the problem of combustion of the combustion furnace and preventing the biomass fuel from coking.

Description

technical field [0001] The invention relates to the field of combustion technology, in particular to a biomass burner and a method for burning biomass fuel using the biomass burner. Background technique [0002] In the world's energy consumption, biomass energy accounts for about 14%, and accounts for more than 60% in underdeveloped regions. More than 90% of the living energy of about 2.5 billion people in the world is biomass energy. [0003] The advantages of biomass energy are that it is easy to burn, less polluted, and has a lower ash content. Its disadvantages are mainly low calorific value and thermal efficiency, and it is bulky and difficult to transport. The thermal efficiency of directly burning biomass is only 10% to 30%. [0004] At present, countries around the world are using biomass energy in the following ways: [0005] 1. Thermochemical conversion method. [0006] High-grade energy products such as charcoal, tar and combustible gas are mainly obtained thr...

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Problems solved by technology

[0013] Although biomass fuel plays a very important role in the energy system, its combustion thermal efficiency is low, and there are problems such as pollution, and the existing biomass fuel burners and combustion methods also have many deficiencies, such as:

[0014] 1. Poor fuel adaptability: it can only adapt to woody biomass fuels with low ash content and high ash melting point;

[0015] 2. The characteristics of biomass fuel make the grate easy to coke, deform or even burn

[0016] 3. Biomass fuel makes the furnace easy to coke and burn

[0017] 5. Due to the coking problem, the air inlet channel of the furnace is severely blocked and the distribution of flow channels is uneven, which seriously affects the combustion effect

[0018] 6. The top cover of the furnace is easy to crack and collapse

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