Emission Control

Flue Gas Abatement

Cleansing emissions before they are released

Flue gas abatement is sometimes referred to a ‘flue gas filtration’ or ‘dry gas cleaning’, but fundamentally all three are the same process that is employed to cleanse emissions before they are released into the atmosphere.

This procedure to remove dangerous and noxious contaminants from flue gas emissions is absolutely vital if we are to protect our environment. It is also a crucial requirement if the incinerator plant is to comply with the world’s most stringent anti-pollutant legislation, standards and regulations.

The technology that we design into our waste incinerators demands that all exhaust gases must be processed through a dry gas abatement plant in order to thoroughly cleanse emissions prior to release. This unit, that is built into the final phase section of the incinerator plant, comprises either a specially manufactured bag or a ceramic filter house together with a reagent storage/feed system.

As they exit the energy recovery plant all gases are injected with lime or sodium bicarbonate, together with activated carbon. All these powerful filtration products are held in bulk containers or silos that are sited adjacent to the gas cleaning system.

As the gas stream passes through the flue abatement unit the lime or sodium bicarbonate will create a chemical reaction that effectively neutralizes any acid components such as sulfur dioxide or hydrogen chloride that are contained in the gas stream. Simultaneously the activated carbon will adsorb any heavy metals that may be present along with any dioxins.

This cleansing stage is then followed up with a rigorous filtration procedure during which all residual dust from the combustion process; along with the spent lime, sodium bicarbonate and carbon will be captured on the abatement plant filters.

At pre-programmed intervals, this residue is forced from the filters by compressed air into sealed containers that can then be safely transported for controlled and regulated disposal.

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Matthews abatement plants are designed from the ground up to meet the specific needs of the wastes being processed, as well as the limitations of the space available within the facility.  Most designs build on a suite of proven technologies that can be combined to meet environmental and energy recovery requirements.

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