Small-sized biomass blending burning boiler ash separation treatment device based on particle size

Abstract

The invention discloses a small-sized biomass blending burning boiler ash separation treatment device based on particle size. The device comprises an integrated speed-control deashing screw rod, a coarse-hole drum screen, spiral blades and a fine-hole drum screen. The device adopts coaxial rotary screening, the ash residues move forwards along with the speed-control deashing screw rod, so that thescreen holes can be prevented from being blocked; meanwhile, the screening is carried out through the coarse-hole drum screen, the large-grain-diameter ash residues are left in the coarse-hole drum screen, and the medium-particle-diameter and small-particle-diameter ash residues enter into the fine-hole drum screen through the coarse-hole drum screen holes; and the medium-particle-diameter and small-particle-diameter ash residues move forwards along with the spiral blades fixed between the coarse-hole drum screen and the fine-hole drum screen, meanwhile screening is carried out through the fine-hole drum screen, the medium-particle-diameter and small-particle-diameter ash residues are left in the fine-hole drum screen, and the fine ash enters into the ash cover through the fine-hole drumscreen holes. The device has the advantages that structure is simple, operation is convenient, ash removal and separation of ash residue and ash is efficient, in addition the ash removal device is sealed, so that the environment pollution due to boiler ash is reduced, dust removal, separation and recovery are integrated, so that the labor intensity is reduced, and the production cost is saved.

Description

technical field [0001] The invention relates to the field of boiler ash removal, in particular to an automatic ash removal and separation device. Background technique [0002] As the country gradually attaches importance to environmental protection, environmental protection has become a very sensitive topic in public opinion, especially for energy-based enterprises, the pressure on environmental protection is increasing, and the environmental protection situation has become very severe in recent years. [0003] Due to the shortage of fossil fuels and the increasingly serious environmental pollution, the development and utilization of renewable energy, especially biomass energy, has gradually attracted people's attention. However, the energy density of biomass is low, and the ash contains a large amount of alkali metal chlorides and sulfides, which will reduce the melting temperature of ash and slag and increase the thickness of ash slag, which will cause corrosion of the hea...

AI Technical Summary

Problems solved by technology

However, the energy density of biomass is low, and the ash contains a large amount of alkali metal chlorides and sulfides, which will lead to a decrease in the melting temperature of the ash and an increase in the thickness of the ash, which will cause corrosion of the heat transfer surface of the boiler superheating zone

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