Low-carbon aluminum product oxidation heating system with biomass gasifier

Abstract

The invention discloses a low-carbon aluminum product oxidation heating system with a biomass gasifier. The system comprises the biomass gasifier, a burner, a primary spraying heat-exchange chamber, a secondary spraying heat-exchange chamber and an aluminum product oxidation pond. Biomass gas generated in the biomass gasifier is combusted in the burner and exchanges heat with water in the primary spraying heat-exchange chamber and the secondary spraying heat-exchange chamber, hot water obtained after heat exchange enters a heat exchange coil pipe in the aluminum product oxidation pond to heat aluminum product oxidation liquid medicine, and part of smoke exhausted from the secondary spraying heat-exchange chamber enters the biomass gasifier again to be combusted. According to the system, heat generated by combustion of biomass fuel is used for heating the oxidation liquid medicine in the aluminum product oxidation pond, part of the smoke is guided to return to the biomass gasifier to be reutilized, smoke waste heat is fully utilized, and low carbon and environment protection are achieved.

Description

technical field [0001] The invention relates to an aluminum material processing system, in particular to an aluminum material oxidation heating system. Background technique [0002] Biomass gasification is a process in which the combustible part of biomass is converted into combustible gas through thermochemical reaction under high temperature conditions under the action of gasification agents such as oxygen, water vapor or hydrogen. The basic reactions of biomass gasification process under different conditions include: C+O 2 =CO 2 ;CO 2 +C=2CO;H 2 O+C=CO+H 2 During the chemical reaction process, the gas components produced during biomass gasification mainly include H 2 、CH 4 And CO, etc., this combustible gas is usually called biomass gas. As a new type of fuel, biomass fuel has advantages different from traditional fuels. For example, the energy of biomass fuel comes from the natural CO produced by biomass growth. 2 Its fixed carbon content is about 15%, which is a...

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Problems solved by technology

[0006] The technologies disclosed in the above two patents / patent applications both use biomass gas to heat and melt aluminum materials, and Chinese patent application 201420852077.7 also uses high-temperature flue gas discharged from the aluminum melting furnace to preheat the cold air in the heat accumulator , which improves the efficiency of energy utilization, but the above-mentioned technologies are limited to using biomass gas to heat the aluminum melting furnace, the utilization of biomass gas in the manufacturing process of aluminum materials is limited, and the energy supply method is single, and the above-mentioned technologies all exist Disadvantages or deficiencies, such as: (1), using the combustion heat of biomass gas to heat aluminum materials, and the exhausted flue gas also contains a large amount of combustible components, but the above-mentioned technology does not re-examine the combustible components in the exhausted flue gas However, the flue gas is directly discharged to the atmosphere, which leads to a waste of energy and low thermal efficiency; (2), there are still a large number of harmful components in the flue gas, which are directly discharged to the external environment after primary combustion, which is harmful to the environment. (3) High-temperature flue gas also contains a large amount of heat. In the above-mentioned technology, only high-temperature flue gas is used to preheat cold air in a heat exchanger, and other waste heat utilization methods are not used. limitations, inefficiency

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