7 hyd prev dehydration

8/18/2019 7 Hyd Prev Dehydration

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EP 20270A01 GAS DEHDRATION

HDRATES AND HDRATE PREVENTIONPART 5 : GAS DEHDRATION


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EP 20270A01 GAS DEHDRATION 2

HDRATE PREVENTION DIFFERENT POSSIBILITIES


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HDRATE FORMATION CONDITIONS GENERALITIES

EP 20267A10 HDRATES & HDRATE PREENTION

WATER

another compound

A GAS

PRESSURECOLD

Key points hydrates formation conditions

To get some hydrates you need 4 things :

Hydrogen bonds


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COURSE OUTLINE INTRODUCTION

PHSICAL ABSORPTION (TEG UNIT)− O

− A: S D TEG

− C TEG

− I TEG − T

PHSICAL ADSORPTION (SOLID DESICCANT)

− O− P

OTHER TECHNOLOGIES


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INTRODUCTION OVERVIE OF DEHDRATION

H TO DEHDRATE A NATURAL GAS?

P HDRATES FREE ATER

M

P

HAT ARE THE MAIN DEHDRATION TECHNIQUES?

P ( LIQUID ) P ( SOLID )


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INTRODUCTION HERE IN THE GAS PROCESSING CHAIN ?

E: P (E)

P: M (F) P

B: M (F) R ( )

N : R P


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INTRODUCTION


− A: S D TEG

− C TEG

− I TEG − T

PHSICAL ADSORPTION (SOLID DESICCANT)− O

− P

OTHER TECHNOLOGIES

COURSE OUTLINE


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1 PHSICAL ABSORPTION (TEG UNIT)


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OVERVIE OF PHSICAL ABSORPTION

G (TEG)

TEG

G TEG 10C100C 10

120+ .

D P 30C 100C

S TEG (.. S G,

C, DRIO)


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OVERVIE OF PHSICAL ABSORPTION PRINCIPLE OF A TEG UNIT


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TEG UNIT REGENERATOR ( STILL COLUMN)


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S R O, 1998 O G U "

2 TEG (1500 MMSCFD ; TEG 80 3/ )V TEG

OVERVIE OF PHSICAL ABSORPTION FE FIGURES


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G T

S

− D

− G

T G (TEG) :

H

E ( 204C) C 99.9+ %

L

K : L

C : )

G : 15 40 TEG/ H2O

G : 99.0 99.95 %

OVERVIE OF PHSICAL ABSORPTION FE FIGURES


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INTRODUCTION


− A: S D TEG

− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

SUMMAR DESIGN OF A TEG UNIT FEED GAS


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SUMMAR DESIGN OF A TEG UNIT FEED GAS

≈ 830 /S3.

H2O CONTENT OF MOISTURE SATURATED GASES

(C BUKACEK)

1 35C,

70 .,

?

SUMMAR DESIGN OF A TEG UNIT TEG CIRCULATION LOOP


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2 100

C (≈ 118 000 3 /),

(

=

100% ).

≈ 100 H2O /

3 A 25

/ ,

.

≈ 2500 TEG /

:

!!!!!

!!!!!

.

..

....

..



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BUBBLE TEMPERATURE

OF COMMERCIAL TEG SOLUTIONS

4

400

(≈ 204C),

?

≈ 98.7 %

SUMMAR DESIGN OF A TEG UNIT RESIDUAL MOISTURE CONTENT OF DR


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SUMMAR DESIGN OF A TEG UNIT RESIDUAL MOISTURE CONTENT OF DR

GAS

ATER DE POINT OF A NATURAL GAS

AT EQUILIBRIUM ITH A TEG SOLUTION

5

35C,

?

≈ 10 C

SUMMAR DESIGN OF A TEG UNIT CONTACTOR


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6 A 25

/ (= 3.00

/ ),

.

≈ 6 T

ESTIMATION OF THE NUMBER OF

SEPARATION TRAS OF THE TEG CONTACTOR

!



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7 ,

.

,

.

100 C.

≈ 72

ESTIMATION OF THE

DIAMETER OF THE TEG CONTACTOR


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SUMMAR DESIGN OF A TEG UNIT REGENERATOR ( STILL)


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SUMMAR DESIGN OF A TEG UNIT REGENERATOR ( STILL)

9

().

≈ 300 350 103 /

ESTIMATION OF REBOILING

DUT OF THE REGENERATOR


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INTRODUCTION


− A: S D TEG

− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

CONVENTIONAL TEG PROCESS EAMPLE OF PFD


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CONVENTIONAL TEG PROCESS FEED GAS SCRUBBING SSTEM


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FEED GAS SCRUBBER

T

T (H

+ F)

FEED GAS FILTER & MIST ETRACTOR

SOLID : > 99% > 1 μ

LIQUID : > 99% > 1 μ

CONVENTIONAL TEG PROCESS CONTACTOR


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BUBBLE CAPS

CONVENTIONAL TEG PROCESS GLCOL/GLCOL HEAT ECHANGER


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CONVENTIONAL TEG PROCESS REGENERATOR STILL COLUMN


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CONVENTIONAL TEG PROCESS REGENERATOR CONDENSATION


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SSTEM

CONVENTIONAL TEG PROCESS REGENERATOR REBOILING


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SSTEM

CONVENTIONAL TEG PROCESS FINAL REFRIGERANT


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CONVENTIONAL TEG PROCESS TEG SOLUTION FILTRATION


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F KE POINT . I , .

( , , .)

TEG

T (), . T :

, . T ( , ),

. , ( , ),

( )

M

I , 99% 10 μ (25μ ).

T ( , ) . T 0.5 0.7

CONVENTIONAL TEG PROCESS TEG SOLUTION FILTRATION


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A

T ( ,

, TEG , .) ,

.

T

G ,

TEG (10 20%). T ( ).

: ,

.


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INTRODUCTION


− A: S D TEG

− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

IMPROVEMENT OF CONVENTIONAL PROCESS THREE (3) TECHNIQUES


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H 100% TEG ?

T (3) :

S (COLDFINGER)

G

S (DRIO)

IMPROVEMENT OF CONVENTIONAL PROCESS SECONDAR ATER ETRACTION


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IMPROVEMENT OF CONVENTIONAL PROCESS SECONDAR ATER ETRACTION


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STILL COLUMN

TO FLARE

TO FLARE

CLOSED

DRAIN

FILTER

PUMP

GLYCOL/GLYCOL

HEAT EXCHANGER

TRIMDRYER

DRY GAS

TRIM

COOLER

GLYCOL

CONTACTOR

WET GAS

HEAT

MEDIUM

REBOILER

SURGE

DRUM

FLASH DRUM

IMPROVEMENT OF CONVENTIONAL PROCESS GAS STRIPPING


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IMPROVEMENT OF CONVENTIONAL PROCESS GAS STRIPPING PERFORMANCES


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PROVEN

U 6 SCF/GALL

99.95% .

P

M BTE

E : I

R

EFFECT OF STRIPPING GAS

ON THE PURIT OF LEAN TEG

IMPROVEMENT OF CONVENTIONAL PROCESS GAS STRIPPING PERFORMANCES


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NNH 2007

TEG 325 MMSCFD

P

7.2 T/ TEG

R ( )

IMPROVEMENT OF CONVENTIONAL PROCESS DRIO PROCESS


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G : 99.99+%

DRIO : S

P : B

S :

− O

− T

− S

− S



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PERFORMANCES


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DRIO BTE CO2

S

L

L

A

Delivery date Plant location Capacity MMSCFD Dew point achieved Lean TEGwt %

1991/1994 U.K. 400 (x2) -62°C @ 37 bar 99.99

1993 Africa 440 -55°C @ 26 bar 99.98

1995 USA 52 -66°C @ 6 bar 99.99

1995 and 1996 Latin America 375 (x2) -54°C @ 34.5 bar 99.99

1997 USA 56 -70°C @ 62 bar 99.99

1997 North Sea 615 (x2) -44°C @ 62 bar 99.98

1997 Europe 140 -108°C @ 16 bar 99.99+


PERFORMANCES


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D EHRA N, 2004 SAIPEM/EON MOBIL (197 MMSCFD)


PERFORMANCES


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D E T (400 MMSCFD, 80 C)

TROUBLESHOOTING HSE CONSIDERATIONS


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EP 20270A08 HDRATES PREENTION DEHDRATION

SOLUBILIT OF AROMATICS (BT) IN TEG SOLUTION

IMPROVEMENT OF CONVENTIONAL PROCESS PERFORMANCE

COMPARISON


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INTRODUCTION

PHSICAL ABSORPTION (TEG UNIT)− O − A: S D TEG

− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

TROUBLESHOOTING DEGRADATION & CONTAMINATION OF TEG

SOLUTION


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SOLUTION


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QUALIT REQUIREMENTS FOR THE LEAN TEG SOLUTION


SOLUTION


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SLUDGE PROBLEMS K6P (O HOLLAND)

SLUDGE 48

HC Condensates

SLUDGE

MEG / MDEA solution

PHSICAL ABSORPTION


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ADVANTAGES

L

L

L

R

DISADVANTAGES

L

A

G

G


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INTRODUCTION


− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

MOLECULAR SIEVES CHARACTERISTICS


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E

C

E

L

L

H

SOLID DESICCANTS PRINCIPLE


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NG T ,

( 200 315 C)

M :

()

A

C (.. A

MTM)

S G D S D

E

C

E

L

L

H

SOLID DESICCANTS PRINCIPLE


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P

SOLID DESICCANTS

M S ()


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SOLID DESICCANTS

S


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.

SOLID DESICCANTS

S

A HC (C5+)


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A HC (C5+)

C / NGL

F C5+

C5+ : 30 45 H

MOLECULAR SIEVES CHARACTERISTICS


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INTRODUCTION


− A: S D TEG

− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

G / M


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PHSICAL ADSORPTION PROCESS IMPLEMENTATION


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N (2 6), , ,



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QG 1 D P C QATARGAS



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, 2003 (1100 C, )

PHSICAL ADSORPTION EAMPLE OF BED ARRANGEMENT


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PHSICAL ADSORPTION ADSORPTION / DESORPTION CCLES


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PHSICAL ADSORPTION ADSORPTION / DESORPTION CCLES


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T

M


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ADVANTAGES

C

S

( )

C

DISADVANTAGES

H

H

L /


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INTRODUCTION


− C TEG

− I TEG

− T


− P

OTHER TECHNOLOGIES

COURSE OUTLINE

OTHER TECHNOLOGIES


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I + R: IPEOL1

G : COMPACT TECHNOLOGIES

P / S: MEMBRANES

C : TISTER

IFPEOL / C & NGL


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C G

T B


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P R O D U C

T I O N M A N I F O L D S

1 SEPARATOR

TEGREGENERATION

LPSEPARATOR

3 SEPARATOR

ED

ED

G

LPSEPARATOR

2 SEPARATOR

2055 55156

156350

TEG

C O C T

T B

TR= 5

TR= 5

TR= 5

TR= 12

TR= 12

75C

45C

S

LPSEPARATOR

2 SEPARATOR

45C

I S

TEG REGENERATION

STATIC MIER

C

STATIC MIER

P

COCURRENT PRINCIPLE

PP C100


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PP C 100

G

A

V

L

US P N. 6,284,024 B1

PP

C100 M 13)

S

R G R

GLCOL REGERATION

PP

C100 M 2

P

,

H2O 2)

T ,

10 H20

F

MM

EAR 2004

AIR PRODUCTS MEMBRANES FOR DEHDRATION


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SPIRALOUND MEMBRANE SEPARATOR


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HOLLO FIBER MEMBRANE SEPARATOR


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GAS DEHDRATION TISTER


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I

C T, F A

C S, ,

A

GAS DEHDRATION TISTER OPERATING PRINCIPLE


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1.3 (500 /)

30 , 40C

+

70 , 5C 100 , 20C

70 , 5C

C

(300,000)

C C

GAS DEHDRATION TISTER OPERATING PRINCIPLE


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(100 , 20 )

(70 , 5 )

(>300,000 )

+ (70 , 5 )

( 1.3 / 500 /)

& (30 , 40 )

GAS DEHDRATION TISTER SSTEM DESIGN


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A/

(


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E 50, A

LT T T NL Q22000

H O C

O

V LT T NL Q12002

P T B ()

I G/L S E ( )

C &

R

HeatingCoils

Cond.

water

GasOut

GasInTwo Tubes

Condensate

Hydrate

Water

Deflector

0C

10C

25

C

SSB B11 1 T

P & S S B (SSB)


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( )

N A G

820% CO2, 3003500 H2S

2 300 MM

S MLNG B F

G >98%

1 O 2003

K F T TEG:

T

T L : US$ 80 MM

( 50/50 CAPE/OPE)

TISTER


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ADVANTAGES C

L

H

N

N

N

S

I FPSO

DISADVANTAGES H (30%)

L

KE POINTS TO REMEMBER

T TEG

P TEG . T TEG ,


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I TEG TEG . M :

U

D;

G TEG

P A ( )

U A

D NGL IFPE

7 hyd prev dehydration

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