novel method gas separation(ingles)gym

8/18/2019 Novel Method Gas Separation(Ingles)Gym

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Overview

Current process

New process

Economic comparison


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Natural Gas Processing Everything Together


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Water removalRemoves &ree li'uid

water andcondensate gas

ends the gas to a

re(nery

The water goes towaste


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Natural Gas Processing

)cid Gas Removal*ydrogen sul(de

+ercaptans

Car$on dioxide

)cid gas removal processes)mine treating

,en(eld processul(nol process

others


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)mine Treatment+ost common used

amines

+onoethanolamineDiethanolamine

Diisopropylyamine

+ethylethanolamine

*ydrogen sul(de goesthrough a Claus process


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Natural Gas Processing)mine Treating


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ul(nol Process-sed to reduce *.#

CO.# and mercaptans&rom gases

Great &or treating large'uantities o& gas

olvent a$sor$s thesour gas

ul&olane is used


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ul(nol Process


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Glycol Dehydration+ethod &or removing the water vapor &rom the

gas

-sa$le glycols Triethylene glycol /

most commonly used

Diethylene glycol

Ethylene glycol Tetraethylene glycol

Wor0s $y having the glycol adsor$ the water


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Natural Gas ProcessingGlycol Dehydration


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Pressure wing )dsorption)dsor$ent material is

used

Gas and material go

under high pressure+aterial adsor$s the

gas " *.# mercaptans#CO.%

DisadvantagesRe'uires high pressures

low cycle times


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+ercury removalCurrent Processes)ctivated car$on / through chemisorption1

)ctivated has extremely high sur&ace area

+ercury can damages aluminum heat

exchangers Those used in cryogenic processing plants

Those use in li'ue&action plants


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Nitrogen Re2ectionProcesses that can

re2ect nitrogenCryogenic process

)$sorption process"using lean oil orsolvent%

+em$rane separation

)dsorption process"activated car$on%


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Cryogenic ProcessCommon re&rigerants used

+ost common method &or removal o&impurities such as nitrogen

Disadvantages+ust reach extremely low temperatures

Only use&ul &or large scale production


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!ean Oil Removal

!ean oil is &ed countercurrent with the wet gas

Temperature and pressure are set to allow &orthe greatest a$sorption o& unwanted gases


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+em$ranesDriving &orcePartial pressure

Type o& materialdetermine permea$ility

k D P ×=

D = diffusion coefficient (cm2/s)

k = Henry’s law sorption

coefficient (cm3/cm3cmHg)

2

1

P

P =α

P1 = Permeaility of component 1

P2 = Permeaility of component 2


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Natural Gas ProcessingEconomics


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Demethani3er


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Demethani3er The next step is to

recover the NG!4s

ProcessCryogenics using a

tur$o5expander can $eused This is the most

common

!ean oil adsorptioncan $e used here


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Natural Gas ProcessingCryogenic Process


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NG! recovery


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NG! recovery

Now the rest o&the li'uid is &ed tothree unitsDeethani3er

De$utani3er

Depropani3er

ProcessEach sent to a

distillation column


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weetening NG!4s


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+erox Processes+ercaptan oxidation

Removes mercaptans &romPropane

,utane

!arger hydrocar$ons


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Natural Gas Processing )nother Process


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Novel +ethod

Technical in&ormationmomentarily not availa$ledue to 6P issues

*owever economics will $ecompared


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Novel +ethod)dvantage+ore cost e7ective than any previous methods

!ess environmental impacts than previousmethods

eparates all contaminants

eparates each component

Everything is done using one process


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Novel +ethod

novel method gas separation(ingles)gym

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