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Category > English Posted 30 May 2017 My Price 5.00

Spray dry scrubbers

can you please paraphrase this paragraph (dont just change the words ....try to understand and write it in your own words)

 

Spray dry scrubbers require the use of an efficient particulate control device such as an ESP or fabric filter. A recycling facility would improve sorbent utilisation and disposal of the by-product is the norm. The sorbent usually used is lime or calcium oxide. The lime slurry, also called lime milk, is atomised/sprayed into a reactor vessel in a cloud of fine droplets. Water is evaporated by the heat of the flue gas. The residence time (about 10 seconds) in the reactor is sufficient to allow for the SO2 and the other acid gases such as SO3 and HCl to react simultaneously with the hydrated lime to form a dry mixture of calcium sulphate/sulphite. Waste water treatment is not required in spray dry scrubbers because the water is completely evaporated in the spray dry absorber. The by-product also contains unreacted lime which may be recycled and mixed with fresh lime slurry to enhance sorbent utilisation as not all of the lime reacts with the SO2. Factors affecting the absorption chemistry include flue gas temperature, SO2 concentration in the flue gas and the size of the atomised or sprayed slurry droplets.

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SuperTutor
(15)
Status NEW Posted 30 May 2017 04:05 AM My Price 5.00

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file 1496117964-Solutions file.docx preview (51 words )
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