Dual-purpose hot-blast stove system and method of use for spray-burning wood chips and burning miscellaneous wood with automatic feeding

Abstract

A dual-purpose hot blast heater system with an automatic material returning system for burning wood bits through spitting and burning miscellaneous trees is provided with a hot blast heater, a drying main machine, a feeding system, a multi-cylinder cyclone collecting device, the automatic material returning system, a main exhaust fan, temperature sensors and a fuzzy controller. An outlet of a drying machine, an inlet of the drying machine and an outlet of the hot blast heater are respectively provided with one temperature sensor, the corresponding temperatures are respectively calibrated through the fuzzy controller, a material returning spiral, an electric gate valve at the top of the hot blast heater and a variable-frequency variable-speed motor of a feeding conveyor are controlled respectively, the burning amount in the hot blast heater, the amount of air sucked into the drying machine and the amount of wet materials entering the drying machine are adjusted, it is guaranteed that the calibrated temperatures are reached respectively, and therefore automatic control over the whole system is achieved. In addition, the heater is dual in purpose and the burning efficiency is improved.

Description

technical field [0001] The invention belongs to a hot blast stove for supplying heat to a dryer, in particular to a dual-purpose hot blast stove system with automatic feeding back, spraying and burning sawdust and burning miscellaneous wood, and its use method. Background technique [0002] At present, there are two kinds of hot blast stoves that supply heat to dryers that dry biomass fuels. One is hot blast stoves for burning miscellaneous wood. The air inlet, the upper side wall of the furnace grate has a furnace door, miscellaneous wood is put in through the furnace door, and burns in the furnace, and the main induced draft fan of the dryer directly draws the hot air into the dryer; Furnace, separate type and horizontal type, with material injection port and air inlet port on the side wall, preheating and igniting the burner usually equipped with fuel oil, the fuel is usually supplied by the fuel tank, the existing shortcomings and deficiencies: [0003] 1. Two types of ...

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Problems solved by technology

[0003]1. Two types of furnaces, the fuel cannot be used at the same time; 2. The burning of wood chips requires an auxiliary ignition machine to be ignited; 3. Both require manual operation and cannot be automated

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