Straw bale burning boiler with reciprocating grate

Abstract

The invention discloses a straw bale burning boiler with a reciprocating grate. The boiler comprises a boiler body at the upper part, a hearth in the middle and the grate at the lower part, wherein the hearth is of a multi-arch structure and comprises a front arch, a middle arch and a rear arch, the front arch is provided with a secondary air supply system, the middle arch is a vertically downwardfirestop wall, and the rear arch extends from the rear wall of the hearth to the middle of the hearth; the grate is the reciprocating grate, a furnace door corresponding to the feeding end of the reciprocating grate is arranged on the hearth, and an auxiliary feeding mechanism is arranged outside the furnace door in a matched manner; a primary air supply system is arranged below the grate, the primary air supply system comprises a plurality of air bins which are sequentially arranged in the advancing direction of the reciprocating grate; and the air bins are connected with an air supply pipeline, and an independent air regulating device is arranged on each air bin so as to form a segmented air supply mechanism. The boiler is suitable for combustion of biomass straw bundling fuel, the problems that an original biomass boiler is low in mechanization degree, low in thermal efficiency, difficult to burn through bundled fuels, serious in slagging of the grate and poor in smoke emission areeffectively solved.

Description

technical field [0001] The invention belongs to the technical field of burning biomass straw bundling fuel, and in particular relates to a reciprocating grate straw bundling burning boiler. Background technique [0002] my country is rich in biomass straw resources. In recent years, the country has gradually strengthened the comprehensive utilization of straw to turn waste into treasure. Biomass energy utilization is mainly through direct combustion, gasification, liquefaction and anaerobic fermentation, and combustion, as the most economical and effective method, is especially suitable for my country's national conditions. The advantages of biomass straw as fuel are high volatile content, easy combustion and The harmful substances in the flue gas are relatively low, but there are also disadvantages such as low calorific value, insufficient combustion, and easy slagging. Ordinary scattered combustion has the problem of low efficiency, while suspension combustion has higher r...

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