A generating method integrating biomass energy heat release and combustion gas

Abstract

The invention relates to a generating method integratedly using biomass energy heat release and combustion gas, based on the principle of biomass energy smoldering heat release and gasification, which especially includes: collecting the heat generated in the biomass energy smoldering process, simultaneously generating combustible gas of H2, CO, CH4 and the like, by the gasification process, wherein, the combustion also release heat. A heating medium rises the temperature after adsorbing the heat of the two processes and stores the heat into heat energy. Finally a semiconductor temperature difference generating and converting apparatus converts the heat energy carried by the heating medium into the electric energy. The combined utilization of the biomass energy heat release and combustion gas can greatly increases the utilization rate of energy. The generating method has advantages of on motion element, on mainterance, and high reliability, and is especially suitable for a generating element of a distributed energy system and for field power supply.

Description

technical field [0001] The invention patent belongs to the field of new energy utilization. The invention relates to a thermal and gas composite power generation method of biomass energy, which can realize the composite utilization of heat and combustible gas in the smoldering process of biomass energy, and greatly improve the energy utilization rate. The heat transfer agent is used to absorb the heat released by the smoldering process and the combustion of combustible gas, and the heat energy is directly converted into electric energy through a semiconductor thermoelectric power generation device. Background technique [0002] Biomass energy is a form of energy stored in organisms in the form of chemical energy, which comes directly or indirectly from the photosynthesis of plants. It is distributed all over the world, and its reserves are huge, including firewood, agricultural and forestry crops, especially energy crops grown for energy production, agricultural and forestr...

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Problems solved by technology

Compared with coal fuel, the temperature and calorific value of biomass fuel are lower, and the moisture is not easy to control. In addition, some technologies are not yet mature. These factors have affected the application of biomass energy to replace fossil energy for large-scale power generation

[0004] So far, conventional biomass gasification technologies and processes still have some shortcomings: ①It needs to consume a lot of external heat, although high temperature can increase the gas production rate and calorific value

The combustion pool heating technology widely used in Northeast China utilizes the principle of smoldering and exothermic biomass fuel, but the thermal efficiency is very low, only 36%, and the gas by-products have not been effectively utilized (Sun Wence, Xie Maozhao, Combustion Pool Working characteristics and heat energy utilization analysis, China Energy, 1994, 8, 38-42)

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