Need for sulphur measurement in multi product pipelines

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

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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

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-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: [email protected]: www.marsap.com

Phone: 022-25516908Fax: 022-25563356