Biomass boiler smoke recycling system

Abstract

The invention discloses a biomass boiler smoke recycling system comprising an air preheater, a spray-type dust and sulfur removal device, a first-stage smoke plenum chamber, a second-stage smoke plenum chamber, a gas dryer, an air compressor and a high-pressure air storage tank which are sequentially connected by pipelines; and each of the pipelines is provided with a manual regulating valve with the same structure. The biomass boiler smoke recycling system is reasonable in design; the energy of smoke is sufficiently utilized, the smoke is subjected to environment-friendly treatment, and carbon monoxide gas generated by incomplete combustion is separated and reutilized, so that the favorable energy-saving and emission reduction effects are achieved; and the manual regulating valves are good in high temperature and corrosion resistance, capable of achieving a favorable sealing effect and easily regulating the sealing performance and are convenient to maintain and replace.

Description

technical field [0001] The invention relates to the technical field of boiler energy saving and emission reduction, in particular to a biomass boiler flue gas recovery and utilization system. Background technique [0002] The fuel of the biomass boiler is biomass. This kind of fuel has the defect of insufficient combustion during the combustion process. If the combustion is insufficient, more CO gas will be produced, and there is more dust in the flue gas. If the gas (the temperature of the flue gas discharged from the boiler is about 140°C) is discharged directly into the atmosphere after being discharged from the boiler, it will not only pollute the atmosphere, but also waste combustible CO gas. Therefore, in recent years. The industry is studying how to fully burn the biomass. Generally, the high-temperature heat of the exhausted flue gas is recycled and discharged into the atmosphere. At present, due to the attention of the country on environmental protection, this kind...

AI Technical Summary

Problems solved by technology

The industry is studying how to fully burn the biomass. Generally, the high-temperature heat of the exhausted flue gas is recycled and discharged into the atmosphere. At present, due to the attention of the country on environmental protection, this kind of The method of not removing dust and sulfur from flue gas, and then recovering and reusing CO gas has been curbed to a certain extent, but the implementation results are still not ideal

In addition, due to the high temperature of the flue gas, the valves installed on the existing flue gas dust removal and sulfur removal pipelines are prone to seal failure when exposed to high temperature, high pressure and corrosive gases. This problem also needs to be solved urgently

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