The customer selected an Envitech SO2 scrubber, candle filter system. The arrangement includes a quencher to cool the gas to saturation, a caustic packed bed absorber to remove SO2, and a candle filter to capture sulfuric acid mist. Internal ducts with outlets near grade simplifies ductwork between the caustic scrubber and candle filter and between the candle filter and ID fan. The scrubber comes with pre-assembled pump skids. Instruments are pre-mounted in pre-assembled piping and pre-wired to a junction box to reduce installation time and cost.
Both scrubbers have been shipped to the sites. The smaller system was put into service in early 2020. The scrubbers meet the design conditions summarized below.
DESIGN PARAMETERS
Design | Plant 1 | Plant 2 |
Flow rate, acfm | 10,000 | 4,500 |
Inlet temp, oF | 1,600 | 376 |
SO2 removal | > 90% | > 95% |
H2SO4 removal | > 99% | > 99% |
Click on the link below to download a case study and related wet scrubber literature.