DPS Delta Glycol Datasheet LR

7/23/2019 DPS Delta Glycol Datasheet LR

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GAS DEHYDRATION

P r o v e n a n d r o b u s t p a c k a g e f o r

d e h y d r a t i n g g a s u s i n g T E G

P a c k a g e s s u p p l i e d c u r r e n t l y

t r e a t i n g o v e r 3 . 5 b i l l i o n

s t a n d a r d c u b i c f e e t p e r d ay

G l o b a l n e t w o r k o f p a r t n e r s

www.dps-global.com


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DPS Delta is a process package technology

company with a wealth of experience in the

oil and gas industry, offering a significantamount of specialised knowledge in the

design, fabrication and operation of a range

of process technology packages.

An extensive reference list and operational flexibility

enables us to offer either complete packages, or process

designs and guarantees to international partners who wish

to undertake the fabrication themselves.

Other process packages offered by DPS Delta include:

Heater Treaters

Electrostatic Desalters and Dehydration

Separators

OVERVIEW

Free water knock out

Inlet manifolds

Amine units

Scrubbers

Specialist internals (cyclonic inlets, vane and

coalescing packs)

Our aim is to maintain our high quality, specialised service

that provides high efficiency engineering studies, services

and manufacturing, with a continued emphasis on meeting

our clients aims and objectives at the lowest possible cost.


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Glycol dehydration is used to dehydrate gas streams in

order to meet pipeline specifications and is accomplished

by absorption of the water vapour using a glycol stream.The wet rich glycol stream is then recycled to the

regeneration package for reconditioning ready for reuse.

Triethylene Glycol (TEG) has gained the widest acceptance

because it permits higher dew point depressions of natural

gas and is more easily regenerated.

The DPS Delta glycol dehydration unit removes water

vapour from a gas stream to allow further treatment

and transportation without risk of hydrate formation or

corrosion in the presence of H2S or CO2by using glycol as

a liquid desiccant using the following process:

1. The feed gas flows first into the contactor tower which

incorporates structured packing and a mist eliminator.

The lean TEG flows in from the top of the column and

contacts in a counter-current manner with the feed

gas, absorbing the water from the rising natural gas to

the desired level. The dried gas then flows to the top

of the contactor tower where it passes through a mist

eliminator where any entrained glycol is removed, and

then flows to the gas export pipeline.

2. The contactor is equipped with a manually operated

skimmer device for removal of hydrocarbons from the

water-rich glycol. The water-rich glycol is then removed

from the bottom of the contactor under level control

and sent to the TEG regeneration skid.

3. The rich TEG is pre-heated using the TEG reflux

condenser before entering the TEG Flash Drum where

free water and associated gas is separated. Any

hydrocarbons present are skimmed off under level

control. The rich glycol then passes from the bottom ofthe Flash Drum to the TEG Particulate Filters (typically

comprising 2 x 100% units connected in parallel) where

solid particles are removed.

4. The rich TEG stream then passes through the TEG

Carbon Filter which has activated carbon canisters to

remove impurities such as entrained hydrocarbons and

degraded TEG.

5. The Rich TEG from the filters then flows to the Lean/Rich

TEG heat exchanger where it is pre-heated by the hotregenerated TEG before entering the packed section of

the TEG still column where it is distilled. Vapour passes

out of the top of the column while liquids flow down

into the reboiler, where heat is added to boil liquids.

G a s D e h y d r a t i o n

BASIC PROCESS

6. The TEG from the reboiler passes through a Gas

Stripping Column where the lean TEG is further stripped

of water, to achieve a desired TEG purity using warmdry gas. The regenerated (lean) TEG passes into the

Lean/rich glycol heat exchanger where the TEG is

cooled. The lean TEG then passes to the Surge Drum

which acts as a buffer tank for the pumps. The lean TEG

is then pumped through the Lean Glycol Cooler and

back into the contactor tower. The Lean Glycol Cooler

cools the glycol so that is warmer than the feed gas, to

reduce the condensing of hydrocarbons.

Having installed a number of these units both onshore

and offshore we are experts in the design and supplyof TEG packages using our strategic network of global

fabrication partners.


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DPS Delta is a process package technology

company with a wealth of experience in the

oil and gas industry, offering a significantamount of specialised knowledge in the

design, fabrication and operation of a range

of process technology packages.

An extensive reference list and operational flexibility

enables us to offer either:

1. Process designs and guarantees to international

partners who wish to undertake the fabrication

themselves

2. Complete turnkey package.

Other process packages offered:

Electrostatic Desalting & Dehydration

Heater Treaters

Separators

Free water knock outs

Inlet manifolds

Amine units

Scrubbers

Specialist internals (cyclonic inlets, vane and

coalescing packs)

Slug Catchers

Our aim is to maintain our high quality, specialised service

that provides high efficiency engineering studies, services

and manufacturing, with a continued emphasis on meeting

our clients aims and objectives at the lowest possible cost.

For further information,

or to discuss a specific

problem, please contact:

DPS (Bristol) LtdSerbert Road, Portishead

Bristol BS20 7GF

United Kingdom

t+44 (0) 1275 841 300

f+44 (0) 1275 841 301

www.dps-global.com

DPSGAS-DELTA-04.11

DPS Delta Glycol Datasheet LR

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