Fine particle emission reduction device of burning energy system based on acoustic agglomeration principle

Abstract

The invention designs a device for realizing acoustic agglomeration emission reduction of fine particles in high-flow flue gas of a burning energy system. The device comprises a high-pressure gas flow source, a high-pressure gas mixing chamber, gas flow sound sources, a horn, a coupling cabin, an agglomeration cabin, an extended cabin, a movable end surface, a conventional dust remover, a data sensing control part, a central measurement and control computer, a sound elimination part and a sound insulation part. According to the device, the three high-power gas flow sound sources are matched with a variable-section pipeline by fully utilizing the principle that the acoustic agglomeration efficiency is sharply improved along with the increment of the sound pressure level; a barrier structure and a gas-sound separation part are introduced, so that the fine particles are quickly agglomerated in the large-size agglomeration cabin under the action of a high-strength and low-harmonic-component planar standing wave sound field; running parameters are adjusted and optimized in a unified manner by virtue of the measurement and control computer; the best transmission efficiency of strong sound waves from generating to acting is realized and the characteristic change of the fine particles is adapted; the whole realization scheme has the advantages of emission reduction efficiency, economical efficiency, applicability, no pollution, extendability and the like.

Description

technical field [0001] The invention relates to an emission reduction device for removing fine particulate matter (hereinafter referred to as PM2.5) with a particle size of less than 2.5 microns in flue gas discharged from a combustion energy system, in particular to a fine particulate matter emission reduction device based on the principle of acoustic coagulation, belonging to The technical field of pollution control equipment manufacturing. Background technique [0002] With the rapid development of my country's economy, the consumption of energy is increasing, and the pollutants discharged into the atmosphere by chemical combustion energy systems are increasing. In recent years, according to the environmental monitoring data of major and medium-sized cities, PM2.5 serious exceeding the standard has occurred from time to time, and urban smog has repeatedly appeared in a large area. These all show that fine particulate matter mainly PM2.5 has become the main pollutant of u...

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Problems solved by technology

The semi-industrial scale system with the highest published power produces only 1600W (Rodriguez J J, et al. Acoustic agglomeration for electrostatic retention of fly-ashes at pilot scale: influence of intensity of sound field at different conditions. Journal of aerosol science, 1996,21:621-622), the sound field intensity is not high, and the emission reduction effect and scale are limited

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