Historical Review of Wet type Electrostatic Precipitator Technology for Industrial and Power Applications in MHI-MS
C. Nagata, S. Suzuki, K. Miyake, and K. Tomimatsu
Mitsubishi Heavy Industries Mechatronics Systems, Ltd. (MHI-MS), Japan
Abstract- Due to the very high performance of Wet type Electrostatic Precipitator (WESP) in collecting particulate matters (PM), compared with the ordinary Dry type Electrostatic Precipitator (DESP), WESP is being widely used in various industrial applications, such as iron & steel plants and boiler plants. In this article, features and references of MHI-MS's well-established horizontal flow type WESP technology applied in iron & steel industry and power stations are firstly reviewed. And newly developed vertical flow type WESP technology, including its possibility to be applied in carbon capture and storage (CCS) plant, is also introduced.
Keywords- Wet type electrostatic precipitator, WESP, horizontal flow type WESP, vertical flow type WESP, continuous atomizing system, water film flow, re-circulation water, gas turbine combined cycle, blast furnace gas, wet type FGD, sulfuric acid mist, SO3, particulate matter, PM, PM2.5, corona quenching, excessive spark-over, space charge, intermittent washing, carbon capture and storage, CCS