Need for sulphur measurement in multi product pipelines
Post on 20-Jun-2015
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Need for Sulphur measurement in Multi-product pipelinesNeed for Sulphur measurement in Multi-product pipelines
Using PAC Antek High Speed Sulphur Analyser
Moving Products
Different product batches are “pushed” through the system abutting each other. The product is kept in turbulent flow to minimize interfaces the mixing zone between batches.
Product Integrity During Movement
Pipelines use optimum sequencing of product grades to reduce the potential for contamination and/or
downgrading of the products transported.
Reformulated regular
gasoline
All premium grades
Conventional regular
gasoline
High sulphur Diesel
Kerosene/ Jet Fuel
Low sulphur diesel fuel
Reformulated regular
gasoline
Methods for interface detection• PAC High Speed Sulphur analysis (1 min.)• Other techniques ( 4-5 min.)
Analysis Times for Various Methods
EDXRF >10 Minutes
Lead Acetate Paper Tape 8+ minutes
PUVF 4-5 minutes
Gas Chromatography 5-6 minutes
ANTEK UVF (standard) 2 ½ minutes
ANTEK UVF HSS 1 minute or less
RAPID RESPONSE OF THE ANALYZERsulphur IN GASOLINE SAMPLE SWITCHING FROM 110 TO 220 AND 15 mg/kg sulphur
0153045607590
105120135150165180195210225240
1 11 21 31 41 51 61 71 81 91 101 111 121 131 141 151
Minutes (1 Analysis/min.)
Co
nc
en
tra
tio
n (
pp
m/w
t. S
)
96-97% RESPONSE IN 1 MINUTE OR LESS
RECOVERY TIME FOR GASOLINE
TRANSITION FROM 220 TO 15 mg/kg sulphur GASOLINE
0153045607590
105120135150165180195210225240
-3 -2 -1 0 1 2 3 4 5 6 7 8 9
Injections (minutes)
mg
/kg
90% RESPONSE IN 1 MINUTE OR LESS
Other instruments and technologies use averaging technique for Sulphur measurement
0
20
40
60
80
100
120
• T90 Response every 2.5mins or more 3 min 6 min
Comparison of 6200 HSS with other techniques
0
50
100
150
200
250
300
350
0 60 120 180 240 300 360 420 480 540 600 660 720 780
• Product change over• 6200HSS detection • Other instruments & techniques
Principle of measurement UV-Fluorescence According to ASTM D 5453
SO2 + uv SO2*SO2+eAmount of energy produced is directly
proportional to the number of sulphur atoms in the sample
R-S + O2 1000+°C SO2 + combustion products
Total sulphur Analytical Flow path
Pyro-UV-Fluorescence Method (ASTM 5453, ISO EN 20846 )
Pyro-Oxygen
Inlet (O2 )
SO2*
PMT
photon
Detector
Vent
FurnaceInjection Valve
SO2+ CO2
DCSUV-Lamp
Hydrocarbon Stream
Sample Conditioning
Carrier Gas (N2,)
R-S + O2 1050°C H2O + SO2 + CO2
4-20 mA
Heat traced
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
Filter and Collimating lenses
UVExcitation
Light
Interference
Filter
Gas Stream from Pyro Tube
Voltage
Time
Theory of OperationDetect Sample
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
SO2
SO2 in sample stream
Voltage
Time
Theory of Operation
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
SO2
Emission Light
Voltage
Time
Theory of Operation
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMTSO2
Voltage
Time
Theory of OperationDetect Sample
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
SO2
Voltage
Time
Theory of OperationDetect Sample
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
SO2
Voltage
Time
Theory of OperationDetect Sample
SIMPLE UV FLUORESCENCE DETECTOR
UV Lamp
PMT
Voltage
Time
Theory of OperationDetect Sample
Petroleum Product:Flow Through PipelineTYPICAL SEQUENCE
• High speed analysis can significantly reduce the transmix volumes & increase the operational profitability
High sulphur Diesel
Ultra Low sulphur Diesel
Premium Gasoline
Regular Gasoline
Jet Fuel
ANTEK P6200 HSS
REGULAR GASOLINE
REGULAR GASOLINE
REGULAR GASOLINE
DIESELFUEL
DIESELFUEL
PREMIUM GASOLINE
TRANSMIX
Compatible InterfacesTransmix: Interface material that must be processed
6200 Additional Features
• Specifications
– Detection Method: UV Fluorescence– ASTM Method: ASTM D-5453– Ranges: Adjustable– Lower Detection: 1 PPM– Accuracy: +/- 1% of Full-Scale– Repeatability: < +/- 1% of Full-Scale– Linearity: < +/- 1% of Full-Scale– Response Time T90: less than 1 minute
Advantages of HSS • Single Injection single result.• Reduced time lag in interface detection.• No guess work Exact Sulphur Values.• Reduced risk of off-spec products in tank.• Reduced use of transmix.• Increase operational profitability.• Complete automation of interface cut.
Cost benefit analysis using HSS
PAC Antek 6200 HSS
Other techniques
Time taken for analysis
1 mins 4 mins
Amount of interface required @ 800KL/hr
27KL 70KL
Cost of interface @Rs 10 /ltr
Rs. 2,70,000 Rs. 7,00,000
Saving per cut > Rs.4,00,000
Field Proven
• No other instrument known to be installed worldwide for multi-product pipelines yet
• In India, 2 instruments operational at BPCL and 3 shipped to HPCL
• Large installed base of sulphur analysers in refineries in India and worldwide
Thank You!
In India:Marsap Services Pvt. Ltd.Email: info@marsap.comWeb: www.marsap.com
Phone: 022-25516908Fax: 022-25563356
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