Sorption
A multipollutant control system with demonstrated high efficiency at removing SOx and other hazardous pollutants as well.
The dry sorption process refers to the practice of injecting a dry alkaline mineral into a flue gas stream to reduce acid gas emissions (i.e. SO3/H2SO4, HCl, SO2, and HF). Two basic steps are considered:
Hydrated lime (Ca [OH]2) is normally used as the absorbent, either directly as calcium hydroxide in the form of a dry powder or produced on site from calcium oxide (CaO) in a dry hydration plant. Other often used sorbents are trona (Na2CO3 ∙ NaHCO3 ∙ 2H2O) and sodium bicarbonate (NaHCO3).
A dry reagent for SOx removal is injected to the raw gas upstream of the Entrained Flow Reactor where the chemical reaction takes place.
Reaction products are removed from the gas together with the furnace dust (dedusting) in the dedusting equipment.
The essential process stages are:
For the wet desulphurization of flue gas, a scrubbing liquid is recirculating and injected to the exhaust where SOx is absorbed in the liquid and reacts. Simultaneously, the flue gas is saturated with water vapor. The reagent is fed to the sump of the scrubber unit and intermittent dewatering is used to drain the reaction agent.
Spray Dryer Absorbers facilitate the removal of acidic pollutants, heavy metals, and dust from flue- and off-gases at fossil-fuelled power plants, waste incinerators and industrial installations.
The importance of quality cold chain management cannot be underestimated. Ensuring that perishable foodstuffs are safe and of high quality at the point of consumption is a tremendous responsibility for those operating cold chain...
The latest evolution in automated milking introduces batch milking – a dairy farming practice where cows are milked in groups at fixed milking times, usually two or three times per day. The automation technology is helping to...
Access to safe water and sanitation is still a challenge in a lot of countries. Illness from dirty drinking water and daily treks to fetch it, mean many children cannot attend school. Thanks to a collaboration with Hamburg-based...