Biomass and coal mixed combustion auxiliary device of boiler

Abstract

The invention discloses a biomass and coal mixed combustion auxiliary device of a boiler. The device comprises a CFB experiment table 1, a circulating fluidized bed boiler 2, a high-precision thermogravimetry device 3, an air distribution machine 4, a material distribution machine 5, a nitrogen oxide generator 6, and a biomass deposition collector 7, wherein one end of the high-precision thermogravimetry device 3 is fixedly connected with the air distribution machine 4 and the other end of the high-precision thermogravimetry device 3 is fixedly connected with the circulating fluidized bed boiler 2; main circuits of the CFB experiment table 1 operated by a digital display communicate with key portions of the circulating fluidized bed boiler 2, the high-precision thermogravimetry device 3, the air distribution machine 4, the material distribution machine 5, the nitrogen oxide generator 6 and the biomass deposition collector 7. By analyzing the chemical composition and corrosion mechanism of biomass deposition molecules and by sampling and analyzing the agricultural and forestry biomass to determine the corrosion mechanism of the biomass deposition, an anti-corrosion strategy for preventing alkali metals and a chlorine element is provided; since certain physical and chemical properties of a biomass fuel and coal have remarkable differences, operation safety of boiler equipment is guaranteed; and meanwhile, the combustion efficiency of the boiler is improved, emission of combustion pollutants is reduced and the operation level of the boiler is optimized.

Description

technical field [0001] The invention relates to the technical field of timely manufacturing of energy-saving and environment-friendly equipment, in particular to a combustion auxiliary equipment used for co-combusting biomass and coal in a boiler. Background technique [0002] Coal, oil, natural gas and other fossil fuels have been exploited on a large scale since the 1970s, and their reserves have decreased sharply. It is predicted that the exploitable fossil energy such as coal and oil on the earth will be depleted within 200 years and 30-40 years respectively, while natural gas can only be used for 60 years according to the reserve-production ratio. At present, the search for alternative energy sources has attracted widespread attention from the whole society. Biomass energy is a renewable energy with abundant sources. It is second only to coal, oil and natural gas and ranks fourth in the world's total energy consumption. At present, the consumption of biomass fuel has...

AI Technical Summary

Problems solved by technology

For imported technology, there is a localized technology digestion and absorption process, and due to the high cost of boiler manufacturing, some auxiliary equipment needs to be imported, and the project cost is relatively high; for independent development, because the technology is not yet mature, there are also continuous process of refinement and development

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