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Paqell is a global leader in
Biological Gas Desulphurisation
and Sulphur Recovery using the
sustainable THIOPAQ O&G technology.
Paqell webinar, 24 September 2013
René Bakker
Business Manager
Paqell
About us
Why
Options
Process
Operation
Bio-sulphur
Added value
Questions
1
2
3
4
5
6
7
8
THIOPAQ O&G by Paqell
● Shell/Paques venture
● Main product: THIOPAQ O&G
● Our claim to the market: Simple, Stable, Safe.
About us 1
THIOPAQ O&G history
About us
1
1887
Discovery of sulphur
oxidizing bacteria by
Sergei Winogradsky
THIOPAQ O&G history
About us
1
1885-1989
Buisman:
bio-sulphide oxidation
THIOPAQ O&G history
About us
1
1993
First commercial
THIOPAQ unit
in The Netherlands
THIOPAQ O&G history
About us
1
2002
NATCO start licensing
THIOPAQ O&G
First commercial unit
in Canada by New
Paradigm
THIOPAQ O&G history
About us
1
2011
Accession of Paqell
Why remove sulphur from gas?
Why 2
H2S is highly
poisonous, corrosive
and converted to SO2
when burned
Sulphur in gas:
mainly present
as H2S
Removal of ‘sour’
gas ideally close
to the source
Types of gas
Why 2
Amine
acid gas
Natural gas
(shale)
Associated
gas
Hydrotreater
/ SWS
Claus
tail gas
Fuel gas
Types of gas
Why 2
Amine
acid gas
Natural gas
(shale)
Associated
gas
Hydrotreater
/ SWS
Claus
tail gas
Fuel gas
Methods of desulpurisation
Options 3
Take out sulphur and load a chemical
substance which is taken offsite for
treatment. High OPEX, low CAPEX
Methods of desulpurisation
Options 3
(LoCat, Sulferox) convert H2S to sulphur
using a dual chelated iron catalyst
Methods of desulpurisation
Options 3
Remove H2S and CO2 from the feed gas
stream and load the amine solutions.
After regeneration (heat) the H2S and CO2
are recovered as a concentrated offgas
which must be treated (incineration, Claus,
THIOPAQ O&G, Sulferox, WSA, LoCat)
Methods of desulpurisation
Options 3
Do not remove sulphur but recover sulphur
by processing amine offgas to produce
liquid sulphur (99.9% S)
‘Remove sulphur (H2S)
from sources 0,5-100 t S/day
with unfavourable gas compositions.’
Why 2
Associated Gas Natural Gas
● ‘Lean’ acid gases (<30mol% H2S) will not burn properly in
Claus furnace
● Limited turn down of traditional SRU/SCOT unsuitable for
fluctuations
● Small AGRU/SRU/SCOT units relatively expensive to
operate & service
● Remote locations are best serviced by simple technology
Why 2
How does THIOPAQ O&G meet the challenge?
Options 3
CO2 removal required No CO2 removal required
When to use?
Options 3
THIOPAQ O&G as sulphur recovery unit (when CO2 removal is required):
‘Lean’ acid gases (<30mol% H2S) treated economically up to 100 t S/day
‘Rich’ acid gases (>30mol% H2S) treated economically up to 30 t S/day
THIOPAQ O&G direct treat, AGRU and SRU in a single process:
Natural/associated gas up to 80 barg treated economically up to 100 t S/day
The workhorse
Process 4
Picture: Albert Janssen
THIOPAQ O&G process animation
Process 4
Absorption Section Bio-Reactor Section Sulfur Recovery Section
About us
1
About us 1
THIOPAQ O&G operations
- Health & Safety
● Safe:
o No fired equipment
o No high pressures reactor
o No free H2S
● No hazardous chemicals
● No scheduled maintenance stops
● On-stream factor typically > 99%
Process 4
Robust performance, appetite for fluctuations
Process
4
Process 4
Consumables
● NaOH or Na2CO3
● Nutrients
● Electricity
● Cooling, heating
Analysis
● H2S analyzer
● pH measurement
● Redox measurement
● Conductivity
● Alkalinity
● Solids concentration
Online
measurement
THIOPAQ O&G sulphur recovery efficiency
● H2S-removal efficiency > 99.9 % from feedgas
Typical H2S content in Treated Gas:
o High pressure: H2S < 4 ppmv
o Low pressure: H2S < 25 ppmv
● Very low SO2 emissions are
achieved
● Sulphur is recovered as:
~ 5% (thio)sulfate in bleed
~95% sulphur
Process 4
THIOPAQ O&G sulphur production
Bio-sulphur 6
Process & Compression Systems
Agriculture Melt to Claus spec
The end product: bio-sulphur
● Unique hydrophilic properties
● Excellent agricultural products
in form of liquid suspension
concentrates
● Biosulphur is much in demand
Bio-sulphur 6
Operating Expenditures
Added value 7
Capital Expenditure
Added value 7
● Low cost per t/S removed
● Simple installation
● Allows fluctuation of gas flows and S-loads
● Safety: no free H2S, no high temperature or pressure
● Limited operation attention
● Deep H2S removal
● Alternative outlet for sulphur product
Added value 7
Start with a quick scan on www.paqell.com
Questions 8
For instant feedback
Questions 8
Questions 8
Theo the Thio
Questions?
Questions 8
Theo the Thio
Thank you!
