Amine Hyg ie ne I mpro ving a mine unit pra c tic e Amine De - - PowerPoint PPT Presentation

Amine Hyg ie ne

I mpro ving a mine unit pra c tic e

Amine De g ra da tio n

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Amine Co rro sio n

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Co urte sy o f Amine E xpe rts

Amine Hyg ie ne

• Pro pe r filtra tio n
• Go o d a mine a na lysis
• Pro pe r o pe ra ting c o nditio ns
• T

e mpe ra ture s

• L

e a n a nd ric h lo a ding s

• He a t Sta b le Sa lt c o ntro l

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Hig h HSAS

• Re fine rie s 0.5% - 3%
• Ga s Pla nts 0%-3%
• Re duc e d c a pa c ity
• Co rro sio n
• F

iltra tio n

• E

ne rg y c o nsumptio n

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Amine Ac id Ga s Re mo va l vs HSAS F

• rma tio n

He a t Re g e ne ra b le Sa lt Amine + H

2S Amine H+ HS- (a c id g a s re mo va l)

 Ga s tre a ting P, T

, e tc . c a n re ve rse e q uilib rium in the a b so rb e r ve rsus the re g e ne ra to r He a t Sta b le Sa lt (e xa mple fo rma te ) Amine + HCCO - Amine H+HCCO - (HSAS)

 Ga s tre a ting P, T

, e tc . will no t re ve rse e q uilib rium.

 HSAS re duc e s “a c tive ” a mine fro m the g a s tre a ting unit

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Re c o mme nde d ma ximum I

• n

Co nc e ntra tio ns

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• Ac e ta te

< 1,000 ppm +

• F
• rma te

< 5,000 - 10,000 ppm (500)

• Oxa la te

< 250 - 1,000 ppm

• Glyc o la te < 1,000 ppm
• T

hio c ya na te < 10,000 ppm

• T

hio sulfa te < 10,000 ppm

• Sulfa te

< 1,000 ppm +

• Chlo ride < 250-500 ppm
• Ca lc ium < 10 ppm
• So dium.

< 8,000 - 12,000 ppm

Co ntro l Optio ns

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8 Re c la ma tio n Ne utra liza tio n Ble e d & F e e d No thing

Ble e d a nd F e e d

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• E

a sie st

• Co st e ffe c tive fo r sma ll units o r ve ry lo w sa lt ing re ss ra te s
• Units unde r 15 m3
• Sa lt re mo va l re q uire me nts unde r 150 kg mo le s
• Only truly e ffe c tive if the e ntire a mine unit c a n b e purg e d in o ne

ste p

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0.0% 1.0% 2.0% 3.0% 4.0% 5.0% 6.0% 5000 10000 15000 20000 25000 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200%

HSAS PPM Anions Pe r c e nt Of Inve ntor y

107% inve nto ry - (3%-1% HSAS)

Ble e d a nd F e e d

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0.% 50.% 100.% 150.% 200.% 250.% 300.% 1 2 3 4

Amine Inve ntorie s Ste a dy Sta te HSAS Inve ntorie s Purg e d to Ma inta in Ste a dy Sta te HSAS

1% ing re ss/ yr 2% I ng re ss/ yr 3% I ng re ss/ yr

Ne utra liza tio n

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• Ca n b e use d to c o ntro l HSAS, while a nio ns

c o nc e ntra tio n inc re a se s

• L

ib e ra te s a mine mo le c ule

• Re duc e s c o rro sio n
• L

imite d b y so lub ility o f the ino rg a nic sa lt

• Ne utra liza tio n pro c e dure is CRI

T I CAL

• Do not pe r

for m without pr

• pe r

e xpe r tise

• R3NH

+ + OH

• <---> R3N + H

2O

• CH

3COO - + Na + <---> CH 3COO - + Na +

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HSAS a nd Anio n Co nc e ntra tio ns

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Re c la ma tio n

• T

ypic a lly the mo st e ffe c tive me tho d o f HSS c o ntro l

• Ca n b e mo b ile o r pe rma ne nt
• Re c la ma tio n c a n b e c o mplic a te d
• I

n N.A te nde nc y is to wa rds mo b ile

• Ne we r me tho ds a re muc h mo re e nd use r frie ndly

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Re c la ma tio n Optio ns

• Distilla tio n
• On o r o ff site , pe rma ne nt, mo b ile
• Re mo ve s io nic a nd no n-io nic spe c ie s, Ure a (DGA)
• I

de a l o f ME A a nd DGA

• Co mple x
• Amine lo sse s a re hig h
• Wa ste dispo sa l c a n b e a n issue

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Re c la ma tio n Optio ns

• I
• n E

xc ha ng e

• Mo b ile o r pe rma ne nt
• L

e ss c o mple x

• Ba tc h o r se mi-b a tc h pro c e ss
• Re mo ve s io nic spe c ie s o nly
• Hig h c he mic a l a nd wa te r usa g e
• L

a rg e wa ste vo lume (c a n re q uire po st tre a tme nt)

• Amine lo sse s c a n b e lo w

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Re c la ma tio n Optio ns

• E

le c tro dia lysis

• Mo st c o mple x de sig n
• Co ntinuo us pro c e ss
• Simple o pe ra tio n
• Re mo ve s io nic spe c ie s o nly
• Amine lo sse s a re lo w with mo st re c e nt de ve lo pme nts

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0.0% 1.0% 2.0% 3.0% 4.0% 5.0% 6.0% 5000 10000 15000 20000 25000 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200%

HSAS PPM Anions Pe r c e nt Of Inve ntor y

107% inve nto ry - (3%-1% HSAS)

Ble e d a nd F e e d

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Re c la ma tio n Optio ns

0.% 20.% 40.% 60.% 80.% 100.% 120.% 140.% 160.% 180.% 200.% 0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00%

% I nve nto ry %HSAS Ble e d & F e e d Distila tio n Old E D Ne w E D

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0.% 5.% 10.% 15.% 20.% 25.% 30.% 35.% 40.% 0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00%

% I nve nto ry %HSAS Ne w E D Old E D Distila tio n Ble e d & F e e d

Re c la ma tio n Optio ns

Re c la ma tio n Optio ns

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0.000% 20.000% 40.000% 60.000% 80.000% 100.000% 120.000% 140.000% 160.000% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00%

% I nve nto ry %HSAS Ne w E D Old E D Distila tio n Ble e d & F e e d

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E le c tro dia lysis

Summa ry

• Amine o pe ra to rs a re inc re a sing ly ta king a mine hyg ie ne in

a c c o unt

• E

a sie st a nd me tho d is to b le e d a nd fe e d

• Mo re so phistic a te d a nd e ffic ie nt o ptio ns a re to re c la im whe n

ne e de d

• Re c la ma tio n ha s in the pa st b e e n vie we d a s c o mplic a te d a nd

thus o fte n no t wo rth the e ffo rt.

• Go o d hyg ie ne le a d to lo ng te rm sa ving s a nd o ve ra ll e ffic ie nt
• pe ra tio n

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