Circulating high-temperature flue gas flowing-state non-blocking tubular bagasse drying system

Abstract

A bagasse heating and drying system is composed of a high-temperature flue gas pipe inlet, a high-pressure fan, a flue gas pipe, a bagasse inlet, a discharging valve, cyclone-type fire extinguishers, a cyclone separator, a flue and a circulating high-pressure fan. The high-temperature flue gas pipe inlet is mounted in front of a high-temperature coal economizer, the high-temperature fan is connected with an incoming and outgoing pipe of the high-temperature flue gas pipe, and a bagasse inlet and the discharging valve are mounted above the high-temperature flue gas pipe. A small amount of high-temperature flue gas in front of the coal economizer is utilized to heat and dry bagasse, and the bagasse is enabled to reach high temperature before catching fire and enabled to be fully burnt in the process of burning, so that temperature of a hearth is increased, heat radiation is enhanced, and heat efficiency of a boiler is improved; the flue gas after being dried is drawn by the circulating high-pressure fan into the boiler to serve as disturbing air to be used so as to realize heat balance running of the boiler; balance ventilation is adopted, so that the drying system is enabled to run under a non-blocking state and enabled to realize clean production, energy conservation and emission reduction, and plays an important role in promoting economy development of cane sugar industry and improving enterprise benefit and social benefit.

Description

technical field [0001] The invention relates to a bagasse heating and drying system, in particular to a non-blocking tubular bagasse drying system with circulating high-temperature flue gas flow. Background technique [0002] At present, in the sugarcane sugar industry, most of the fuel provided to the boiler for combustion is bagasse, and the bagasse that is transported from the press to the boiler is directly sprayed into the furnace from the slag drop tube for combustion. Generally, the moisture content of bagasse is 45-50%, and the temperature of bagasse is about 50-60°C. The increase of moisture in the fuel will cause the temperature of the furnace to drop, reduce the heat transfer of the boiler's heat radiation, and increase the heat absorption of the convective heating surface. Therefore, the moisture and temperature of bagasse will affect the combustion of the boiler, resulting in a high combustion center and easy coking in the furnace. The moisture content of baga...

AI Technical Summary

Problems solved by technology

Therefore, the moisture and temperature of bagasse will affect the combustion of the boiler, resulting in a high combustion center and easy coking in the furnace

The moisture content of bagasse is relatively high, and the heat loss of mechanical incomplete combustion is large, resulting in waste of heat energy and pollution of the environment

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