Indirect hot-air furnace using alcohol base liquid fuels

Abstract

The invention discloses an indirect hot-air furnace using alcohol base liquid fuels, which comprises a furnace body, wherein a combustion chamber and a heat exchange chamber are arranged in the furnace body, an air inlet, an air outlet and a smoke outlet are formed in the furnace body, and a distributed alcohol base liquid fuel burner and a fuel supply device for providing alcohol base liquid fuels and combustion-supporting gas for the distributed alcohol base liquid fuel burner are arranged in the combustion chamber; and at least two groups of heat exchangers are arranged in the heat exchange chamber in parallel in the conduction direction of hot air generated by the combustion chamber, wherein a hot air inlet and a hot air outlet are formed in each group of heat exchanger, a hot air diversion channel for allowing the heat-exchange air to circulate is arranged between the hot air outlets and the hot air inlets of each two adjacent groups of heat exchangers, the air inlet is communicated with the hot air inlet of the group of heat exchanger which is farthest from the combustion chamber, a blowing unit is arranged at the air inlet, and the air outlet is communicated with the hot air outlet of the group of heat exchanger which is closest to the combustion chamber.

Description

technical field [0001] The invention belongs to the technical field of fluid heaters with heat generating devices, in particular to an indirect hot blast stove using alcohol-based liquid fuel. Background technique [0002] Industrial hot blast stove is a hot air supply equipment with a wide range of uses. It is divided into direct hot blast stove and indirect hot blast stove. Used in food baking, pharmaceuticals, synthetic resins, fine chemicals and other fields. [0003] A hot air stove is a fluid heater that heats air through various forms of heat exchangers such as fuel combustion or electric energy, and then provides hot air. Since electric energy is a secondary energy source and the cost of use is high, traditional fuels such as coal, diesel, gas, etc. are still widely used in industrial hot blast stoves. The pollution is serious, and its use is more and more restricted, and when the gas pollution is slightly less, its use is limited by the supply area. [0004] On t...

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Problems solved by technology

Because electric energy is a secondary energy source, the cost of use is high, so traditional fuels such as coal, diesel, gas, etc. are still widely used in industrial hot blast stoves. The pollution is serious, its use is more and more restricted, and when the gas pollution is slightly less, its use is limited by the supply area

[0004] On the other hand, traditional coal and diesel combustion will produce a large amount of sulfur oxides, which will cause corrosion to the metal components of the heat exchanger. The key component of the indirect hot blast stove is the heat exchanger. If the corrosion damage fails, the thickness of the heat exchanger material in this type of hot blast stove will increase, which will inevitably reduce the heat exchange efficiency of the heat exchanger. Therefore, it is very necessary to develop new energy sources that replace traditional fuels in hot blast stoves. matter

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