Transcript A&D PI2 Concept for China Specialities of Market in China

Claus Gas Analyser
The Claus Technology...
... is the world's most significant gas desulfurizing process,
recovering elemental sulfur from gaseous hydrogen sulfide.
Raw Materials and Products
 Gases with a H2S content of over 25 % are suitable
for the recovery of sulfur in Claus plants.
 These gases may also contain hydrogen cyanide,
hydrocarbons, sulfur dioxide or ammonia.
 They mainly originate from physical and
chemical gas treatment units (Rectisol, Purisol
and amine scrubbers) in refineries, gasification
or synthesis gas plants.
 The sulfur recovered in Claus plants is used
for manufacturing medicine, cosmetics, fertilizers
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 1
and rubber products.
Harald Mahler 11-2000
Claus Gas Analyser
Applications in Manifold Processes
Sour gas from natural gas fields
Sour refinery gas
Sour water stripper gas
Sour gas from chemical plant
Sour gas from salt production plant
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 2
Sour gas from coal gasification
Harald Mahler 11-2000
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 3
Claus Gas Analyser
Process Flow Diagram of Claus-Process
Harald Mahler 11-2000
Claus Gas Analyser
Process Flow Diagram of Claus-Process
Isothermal Step
H2S: > 25 %.
2 H2S+3/2 O2
SO2 + H2O
> 850 °C
Cooled to liquid S
2 H2S+S02
T control
Accurate dosage important !
3/2 S2+2 H2O
Ratio 2 : 1 IMPORTANT
Other reactions
CO2+H2S
COS+H2O
CO+1/2S2
COS
COS+H2S
CS2+H2O
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 4
60-70 % output of S
Harald Mahler 11-2000
Claus Gas Analyser
Process Flow Diagram of Claus-Process
Catalytic Step
= Activated Alumina
1. Heating
205 to
2. Catalytic reaction
230°C
3. Condensation
1.+2.
H2S+SO2
3.
130 to
170°C
H2S+S02
3/6 S6+2 H2O
3/8 S8+2 H2O
Further step either burning
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 5
or desulphurization downstream
Harald Mahler 11-2000
Claus Gas Analyser
Process Points of Interest
Feed acid gas
H2S
Entrance of
Catalytic Convertor
H2S - SO2
Emission gas
after incinerator :
SO2 - CO - H2S - NO
Analysis for enhanced
Claus processes
O2
Tail Gas Analysis
H2S - SO2 - H2O - N2
- COS - CO2
At sulfur pit
H2S
Air
(partial)
To Incinerator
Folie 6
C
PGC
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Harald Mahler 11-2000
Claus Gas Analyser
Tail Gas Analysis for Process Optimisation
For proper control of a Claus process , the hydrogen sulphide ( H2S ) and sulphur dioxide ( SO2 )
must be measured in tail gas.
Major problem
Sample gas is saturated with sulfur vapour
Plugging of sample lines and analyzer
Further problem
Due to the presence of CO2 and HC, COS and CS2 will be formed.
Concentrations difficult to predict
Depending on changing of CO2 and HC concentration
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 7
Changing of burner temperature.
CO2 and CS2 interfere UV analysis of SO2 and H2S.
Harald Mahler 11-2000
Claus Gas Analyser
Our Solution...
Process Chromatography
PGC302 Edition II Claus
based on...
 Standard Process Chromatograph
with some specialties..
 Second hot oven
for sample conditioning system
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 8
 Safety back-purge unit
Installation on top of the process line
Harald Mahler 11-2000
Claus Gas Analyser
Double Oven System
Right Oven
Sample
conditioning
system
Sulphur trap and
fastloop
Air jet pump
Back-purge
system
Calibration
PGC302 Claus Application
Chromatograph
Sample injection
Pre-separation
column
Backflush
Final separation
TC-Detector
Variable applications
possible according
customer´s
requirements
Excellence in
Automation & Drives:
Siemens
Folie 9
Left Oven
Harald Mahler 11-2000
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 10
Claus Gas Analyser
PGC Tubing...Gas Flow during Process Run
Harald Mahler 11-2000
Claus Gas Analyser
PGC Tubing...Gas Flow during Calibration
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 11
Closed
Harald Mahler 11-2000
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 12
Claus Gas Analyser
PGC Tubing...Gas Flow during Purge
Harald Mahler 11-2000
Claus Gas Analyser
The Chromatogram
H2S
SO2
PGC302 Claus Application
SO2
on demand :
H2O ( 3 Min Cycle )
Excellence in
Automation & Drives:
Siemens
Folie 13
H2S
Harald Mahler 11-2000
N2
COS
H2O
SO2
H2S
Claus Gas Analyser
Extended Analysis...
N2
CO2
H2S
COS
SO2
H2O
0-100%
0-20%
0-2%
0-1%
0-1%
0-10%
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 14
CO2
H2S - SO2 ratio is calculated
Harald Mahler 11-2000
Claus Gas Analyser
Steam Heated Sample Lines
Tube - in - tube technology
Sample : 6mm OD
Steam : 10mm ID
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 15
Shut off valves : Steam jacketed
Harald Mahler 11-2000
Claus Gas Analyser
Our Worldwide References
... more than 30 chromatographs in the field
Country
BEB
DEA
ELF Atochem
ELF Antar
NEAG
Germany
Germany
France
France
Germany
Secauto /
Southparts
Wintershall
Lurgi
Norilsk
PCK Schwedt
Esso
Zaklady Pulawy
Technoexport
Techmash
Iran
Germany
Germany
Russia
Germany
Belgium
Poland
Czech Republic
Russia
PGC302 Claus Application
Qty. Analyser Analysis
5
1
2
1
1
1
7
1
1
1
4
1
1
1
1
2
PGC302
PGC302
PGC302
PGC302
PGC302
PGC302
PGC302
PGC302
PGC302
P102
P300
P300
P300
P300
P300
P300
H2S, SO2, CO2
H2S, SO2, CO2
H2S, COS, SO2, CO2, N2, Water
H2S, COS, SO2, CO2, N2
H2S, SO2
H2S, SO2, CO2
H2S, COS, SO2
H2S
H2S, SO2
H2S, SO2, H2, Water
H2S, COS, SO2
H2S, COS, SO2
H2S, COS, SO2
H2S, SO2
H2S, SO2
H2S, SO2
Excellence in
Automation & Drives:
Siemens
Folie 16
Customer
Harald Mahler 11-2000
Claus Gas Analyser
Our Competitors
Manufactorer Principle
Advantages
Disadvantages
AMETEK
UV-Diodenarray-Spectrometer
Fast Analysis (T90=10s) Interference by elem. S
UV Optic covered by S film
BOVAR
NDUV Spectrometer
Fast Analysis (T90=5s)
Interference by elem. S
UV Optic covered by S film
GC
others
PGC302 Claus Application
less experiences with
sample conditioning system
Excellence in
Automation & Drives:
Siemens
Folie 17
ABB and
Harald Mahler 11-2000
Claus Gas Analyser
Where are our Customers...
Endusers
Licensors
Clauspol
- IFP North America
Clinsulf-SDP
- Linde
OxyClaus
- Lurgi Oil & Gas
OxyClaus
- The Pritchard Corp.
SuperClaus
- Stork
Sure
- BOC Gases
Sure
- Parsons
Paques / Thiopaq - Shell
Paques / Thiopaq - DuPont
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 18
Engineerings
Harald Mahler 11-2000
Claus Gas Analyser
Our Benefits ... Our Advantages
 Proven technology with high reliability, long term stability, many references
 Safe protection : Backpurge to clean analyzer and sample lines in case of any problem
PGC302 Claus Application
Excellence in
Automation & Drives:
Siemens
Folie 19
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with low temperature, power failure.. As well as during maintenance works.
Easy operation , remote operation
Easy maintenance , less frequently
No UV-lamp, longer stability, no expensive spare parts regularely needed
No interference by sulfur, COS CS2 using chromatographic separation
Comprehensive self diagnosis
Extended analysis possible : N2 CO2 COS H2O
DCS-coupling using MODBUS
Network with other PGCs on plant
Good value for money
Harald Mahler 11-2000