doi:10.16186/j.cnki.1673-9787.2020050045

Received:2020/05/14

Revised:2020/09/01

Published:2021/07/15

Study on numerical simulation of the dust removal technologycontrolled by a tidal jet

LU Ke, GONG Xiaobing

Chongqing Research Institute， China Coal Technology Engineering Group ， Chongqing 400039 ， China

Abstract:In order to solve the dust pollution problem caused by dust diffusion in the gap between the nozzle and the fuselage of a tidal jet machine， a scheme of feeding and dust control based on negative pressure injection technology was proposed. The dust collecting cover was designed to seal the ejector and the feeding device. The flow field distribution and dust migration law in the dust control cover were studied by numerical simulation ，the optimal negative pressure parameters were determined and applied in the field. The results showed that the dust control effect was the best when the negative pressure was 1 300 Pa， and the dust concentration in the scraper conveyor cavity was reduced to less than 50 mg/m³. The dust reduction efficiency at the feeding port and at 5 m point from the downwind side of the fuselage could reach 90. 28% and 87. 36% respectively after the application of the ejector feeding and dust control device.

Key words:tidal jet;anchor spray;ejector;dust control;numerical simulation

 潮式喷射机控除尘技术数值模拟研究_鲁轲.pdf