Biomass-coal water slurry co-fired organic working medium boiler

Abstract

The invention discloses a biomass-coal water slurry co-fired organic working medium boiler which comprises an air distribution device, a combustion chamber, a vortex separation burnout device and a tail convection heating surface component, wherein the combustion chamber is divided into a dense-phase zone and a dilute-phase zone; the air distribution device is provided with an air distribution plate; the air distribution plate is of a V shape; vent holes are formed in the air distribution plate; the vent holes are sequentially arranged from the middle to the edge of the air distribution plate, and the areas of the vent holes are gradually reduced; the dense-phase zone is of an inverted landing-shaped structure, and a buried pipe is arranged in a return flow zone of the dense-phase zone; water cooling walls are arranged around the dilute-phase zone; the vortex separation burnout device is arranged at the upper part of the dilute-phase zone; the tail convection heating surface component is arranged at the rear part of the vortex separation burnout device; the organic working medium boiler adopts the biomass-coal water slurry mixed fuel. According to the biomass-coal water slurry co-fired organic working medium boiler disclosed by the invention, the application range of the biomass fuel is widened, and the use cost of the organic working medium boiler is lowered.

Description

technical field [0001] The invention relates to an industrial boiler, in particular to an organic working medium boiler for co-firing biomass-coal-water slurry. Background technique [0002] Biomass fuels come from agricultural and forestry waste. The biomass fuels from agriculture are mostly rice husks, peanut husks, corncobs, camellia husks, cottonseed husks, etc. Biomass fuels from forestry refer to: logging residues, such as Branches, twigs, treetops, bark, leaves, roots, rattan, shrubs, etc.; processing residues, such as veneer, slats, cut ends of wood and bamboo, saw foam, broken veneer, wood core, shavings, wood Blocks, scraps, etc. There are many types of biomass fuels and a wide range of sources. China is also a large country in agriculture and forestry. A large amount of biomass fuels are produced every year. Except for a few recycling uses, most of them are treated as ordinary garbage incineration or landfill, resulting in a huge waste of resources. waste. [0...

AI Technical Summary

Problems solved by technology

The traditional organic working medium boiler using coal water slurry as fuel adopts the atomization combustion method. The main problems are: the central temperature of the high-temperature combustion flame is above 1450 ° C, and it is easy to coke in the small-space combustion chamber; the ignition conditions are poor, and the combustion Unstable; boiler coal type has poor adaptability, clean coal needs to be washed to make slurry, and the operating cost is high; the load adjustment range is small, and the combustion rate is easy to be low and greatly reduced at low load; it belongs to high-temperature combustion and high pollutant emissions; the boiler slurry supply system is complex And the high operating pressure is easy to cause the wear of the slurry pump and the slurry gun

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