Biomass grate firing boiler

Abstract

The invention discloses a biomass grate firing boiler. The boiler comprises a movable grate, a hearth, a water jacket, secondary air, a front-wall membrane type water cooling wall, an upper drum, a lower drum, a convection bank and a rear arch, wherein the front part of the hearth of the grate firing boiler is not provided with a front arch and has a membrane type wall structure; the lower part of a feeding section at the front part of the movable grate extended out of the hearth is provided with an L-shaped sealing partition plate; the feeding section of the grate and the water jacket form a water cooling feeding passage; the two sides of the front part of the water cooling feeding passage are provided with adjustable gates; the top end of the middle part is provided with a movable folding door; and a throat part formed by the front-wall membrane type water cooling wall and the rear arch is correspondingly provided with a secondary air port. By using the unique water cooling feeding passage and a folding door sealing device, the annealing in the combustion process of a biomass fuel can be effectively prevented, the running safety of the boiler is increased, and meanwhile, the amount of the cold air which enters the hearth through the feeding passage is reduced; the front wall of the boiler has a membrane type wall structure, so that the sealing property of the boiler is improved and the heat dissipation loss is reduced; and the boiler has the advantages of safety, high efficiency and the like.

Description

technical field [0001] The invention relates to a biomass layer combustion boiler, which belongs to the field of biomass combustion equipment. Background technique [0002] With the gradual deepening of the international community's understanding of energy and the environment, biomass, an emerging energy-saving and environmentally friendly energy, has been paid more and more attention by countries all over the world. Most countries have formulated development goals to promote the development of modern biomass utilization technologies. And implemented incentive policies. [0003] At present, domestic and foreign boilers that use biomass as fuel mainly use power generation, such as straw power generation boilers, waste wood chip power generation boilers, biomass gasification power generation boilers, etc., which have developed rapidly; boilers used for industrial steam or heating are only in recent years. developed, relatively small in scale. [0004] Because biomass has the...

AI Technical Summary

Problems solved by technology

In industrial applications, biomass-fueled boilers mostly use fuels such as flakes, blocks, and granules, which require additional drying, crushing, and granulation equipment in the fuel preparation process, which consumes more energy. Higher, larger investment, complex process, to a certain extent, also limits the development of biomass boiler industrialization

Images