물 분사 방식을 도입한 다층 다단 다공성 플레이트 시스템의 집진 특성

Abstract

Major wet scrubbers need high pressure drop and power cost. One important issue is that the leaking of dust and droplets needs to be prevented by installing a demister. The wet scrubber has a big problem in regards to the maintenance of the demister. For this reason, a study of the ‘Collection Characteristics of Multi-layer Multi-stage Porous Plate System with Water Spray’ was needed. The study low-cost and high efficiency by making up for the weak points. The reason for the study is to investigate a system which can provide high collection and long-term efficiency for minute particles without a demister. An experiment on the decontamination efficiency of dust (fly ash) and gas (SO2) with Collection Characteristics of Multi-layer Multi-stage Porous Plate System with Water Spray will be conducted. As a result of studies, it was shown that the pressure of the system was 154mmH2O (dry type), and 158mmH20 (wet type) at 5 stage and inlet velocity 3.53m/s. There was little increase of pressure drop according to spray water, but it was a very small pressure drop compared to the existing ventury scrubber (over 300mmH2O). The collection efficiencies of fly ash was 89.3% (dry type), 98.6% (spray water 100ml/min), 99.7%(spray water 250ml/min) at 5stage, and inlet velocity 3.53m/s. The removal efficiencies of SO2 was 62.5% (spray water 100ml/min), 75% (spray water 250ml/min) at 5stage, and inlet velocity 2.82m/s. This system was able to highly collect dust and gas at the same time without installing a demister at low pressure drop.