Biomass combustion equipment with double fire grates

Abstract

The invention discloses a biomass combustion equipment with double fire grates, and the biomass combustion equipment comprises a feeding device, a feeding hole, a smoke outlet, a furnace wall, a water cooling wall and fire grates, wherein the fire grates comprise an upper fire grate and a lower fire grate; the upper fire grate and the lower fire grate divide a combustion chamber into a main combustion chamber and an auxiliary combustion chamber; the upper fire grate and the lower fire grate are both formed by bending and extending rear-wall water cooling wall pipes; a forward-bending section and a backward-bending section are respectively formed on the lower fire grate and are finally collected on the rear-wall water cooling wall; the upper fire grate is finally collected on a front-wall water cooling wall; and the rear section pipe rack of the upper fire grate is bent to form a macropore for falling slag. The biomass combustion equipment has the advantages that a water-cooling double fire grate structure is adopted, the temperature of the fire grates is lower, the fire grates have small possibility of being deformed and damaged, and the combustion efficiency is high; even if the fire grates are coked, the normal operation of combustion is not influenced; the combustion chamber is in a negative pressure state, the leaked air of the feeding hole and a slag discharging hole is used for combustion, the field is clean, the smoke discharging excess air coefficient is low, and the smoke discharging loss is small.

Description

technical field [0001] The invention relates to biomass burning equipment with double grates, which belongs to biomass burning boiler equipment. Background technique [0002] Biomass fuel, as an environmentally friendly renewable energy, has low sulfur content, small ash content, and can achieve CO 2 With the advantages of zero emission, and my country's biomass resources are rich, diverse, and widely distributed. Under the dual background of my country's rapid economic development and vigorous calls for energy conservation and emission reduction, biomass fuels have huge advantages and broad application prospects for combustion power generation , my country's "Renewable Energy Medium and Long-Term Development Planning Outline" (2006-2020) has identified biomass fuel power generation as a key technology for biomass energy utilization. [0003] At present, the fixed grate biomass burning equipment disclosed in the Chinese patent has the following forms: one is the chain grate,...

AI Technical Summary

Problems solved by technology

Many people in the industry have proposed a lot of combustion equipment for burning biomass briquette fuel, or adding biomass additives during the briquetting process to solve the problems of biomass fuel feedstock and ash coking. However, the cost of fuel in this way has always been daunting.

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