Emissions from marine vessels contribute to global smog forming pollutants. In response, the International Maritime Organization (IMO) has adopted new regulations in MARPOL Annex VI for progressive reduction of NOx, SOx, and Particulate. The new regulations require ships to achieve a SOx reduction equivalent to 0.1% sulfur fuel by 2015. This requirement can be met by using more expensive, low sulfur fuel, or by using a marine diesel scrubber. The scrubbers must achieve greater than 97% SOx removal with 3.5% sulfur fuel. A cost effective scrubber is needed to help ship operators comply with these rules and avoid high cost ultra-low sulfur fuel.
The Envitech HYSEA DeSOx scrubber combines 30 years of experience achieving low emissions on stationary sources with patent pending technology. Scrubber features include:
- Innovative inlet design allowing a vertical bottom direct connect to minimize space.
- Proprietary quencher to cool the gas to saturation and remove particulate.
- Flow works modeling to ensure uniform gas distribution for maximum performance.
- Flexibility for open loop operation to minimize operating cost and closed loop operation for navigation in inland water ways and SECA zones.
- High performance, foul-resistant mass transfer media to minimize pressure drop and parasitic load.
- Skid mounted pump skid with integrated control panel.
Please click on the icon below to download a case study on the Envitech HYSEA DeSOx scrubber.
from used automobile batteries. The process uses a combination of combustion processes including kilns and furnaces. Despite extensive control equipment including bag-houses, HEPA filters, and wet scrubbers, low concentrations of heavy metals were being emitted from various stack sources. Cancer risk index standards were being exceeded due to the close proximity of residents to the plant. To be compliant with state regulations a solution was needed to reduce these emissions. The special circumstances of nearby residents and a stringent cancer risk index required the facility to meet emission limits well below any other secondary lead smelter in the country. 
will increase production to nearly 20 MM gpy. The state requires a direct fired heater to reduce SO2 emissions by 95%. Although packed bed scrubbers are common for this type of process, a vertical scrubber design can be expensive to retrofit into an existing facility. The facility was looking for a solution to meet or exceed emission standards and be relatively simple to install and maintain.
in Kemper County Mississippi is being built. The process uses locally mined lignite coal for fuel which contains 40% moisture. The coal must be dried before it is converted to syngas in the gasifier.
is upgrading a sulfite pulping mill in Eastern Canada to incorporate a new red liquor recovery boiler for power generation. The boiler system increases annual green energy production by up to 40-megawatts, reduces sulfur dioxide emissions by 70%, and increases annual production capacity of specialty cellulose by 5,000 metric tonnes. The off-gas from the recovery boiler contains a high concentration of SO2 which needs to be recovered for re-use in the production process. 
needed to retrofit an SO2 
difference in plant emissions. A well designed chevron style mist eliminator achieves significantly lower emissions than a cyclonic separator. This is because the chevron style mist eliminator allows the Venturi scrubber to operated at a higher pressure drop for the same system pressure drop. The chevron entrainment separator is also more efficient at removing water drops.
In previous 
that fuel expenses for ship-owners will increase along with the requirement for the use of lower sulfur content fuel. An economical alternative to using this more expensive fuel is to install a secondary exhaust gas cleaning system such as an SO2 scrubber to clean diesel engine emissions before they are released to the atmosphere.
Southern, California. The low emission limit enables the facility to remain outside of the South Coast Air Quality Management District (