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Old 01-31-2012, 01:33 PM
vedita_agro vedita_agro is offline
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Join Date: Jan 2012
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scrubbing bio gas by ethanalomine




WITH THE HELP OF MONOETHANOLAMINE, WE CAN SCRUB THE BIO GAS AND THE CO2 AND H2S CONTENT IN IT CAN BE SCRUBBED. BUT I AM NOT GETTING IDEA TO HOW MUCH 10% AQUASIOUS SOLUTION WILL BE NEEDED FOR 1CU.M. VOL OF BIO GAS AND HOW WE CAN JUDGE THAT THE SOLUTION IS NOW IN THE STAGE OF REGENERATION AND NEW SOLUTION IS TO INSERT IN THE PURIFICATION CHAMBER.
I THINK THAT AS THE ETHANOLAMINE SOLUTION IS REGENERATED BY THE BOILING FOR JUST 5 MIN. AND CO2 AND H2S WILL BE REMOVED FROM BIO GAS AND WE GET PURE METHANE.

HERE ARE NOTIFICATIONS FROM WIKIPEDIA.

Aqueous solutions of MEA (solutions of MEA in water) are used as a gas stream scrubbing liquid in amine treaters. For example, aqueous MEA is used to remove carbon dioxide (CO2) from flue gas. Aqueous solutions can weakly dissolve certain kinds of gases from a mixed gas stream. The MEA in such solutions, acting as a weak base, then neutralizes acidic compounds dissolved in the solution to turn the molecules into an ionic form, making them polar and considerably more soluble in a cold MEA solution, and thus keeping such acidic gases dissolved in this gas-scrubbing solution. Therefore, large surface area contact with such a cold scrubbing solution in a scrubber unit can selectively remove such acidic components as hydrogen sulfide (H2S) and CO2 from some mixed gas streams. For example, basic solutions such as aqueous MEA or aqueous potassium carbonate can neutralize H2S into hydrosulfide ion (HS-) or CO2 into bicarbonate ion (HCO3-).
H2S and CO2 are only weakly acidic gases. An aqueous solution of a strong base such as sodium hydroxide (NaOH) will not readily release these gases once they have dissolved. However, MEA is rather weak base and will re-release H2S or CO2 when the scrubbing solution is heated. Therefore, the MEA scrubbing solution is recycled through a regeneration unit, which heats the MEA solution from the scrubber unit to release these only slightly acidic gases into a purer form and returns the regenerated MEA solution to the scrubber unit again for reuse.

SO, MY CONCEPT IS THAT BY MAKING SOME APPARATUS' WE CAN COLLECT THE CARBON BY USING CARBON COLLECTORS AND SULPHATES BY USING AIR HERE AT THE TIME OF REGENERATION OF MEA SOLUTION, AS THERE IS NO METHANE NO CHANCE OF EXPLOSION.
IN INDIA WE HAVE A PHRASE " SAP BJI MAR JAY AUR LATHI BHI NA TUTE"
"KILL THE SNAKE WITHOUT BREAKING THE STICK" USE SUCH TECHNIC.
IF ANY ONE KNOWS THE QUANTITY OF MEA SOLN.REQ. FOR 1000 LTRS. OF BIO GAS PLZ. INFORM ME.
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