Coriolis Metering” in LNG Transportation · Coriolis Metering in LNG Transportation ... Driver connect the flexible(s) 3. ... Uncertainty = Income / cost

“Coriolis Metering” in LNG Transportation

Phil Fathers

Global Business Director -

Alternative Fuels

[File Name or Event] Emerson Confidential 27-Jun-01, Slide 2

Coriolis Metering in LNG Transportation

Agenda

– What is a Coriolis Meter?

– LNG Traditional Applications

– LNG New Applications

– Coriolis Technology

– LNG Dispensing Made Easy

– Summary


What is a Coriolis Meter ?



Agenda






– Summary



Storage capacity: •20.000 m3 •9.260 ton •126 GWh

Energy capacity/year: 3 TWh

LNG Terminal Flow Handling – Nynashamn Sweden


Choice of Technology

Study of different technologies 1. Turbine (volume)

2. Ultrasonic (volume)

3. Coriolis (Mass)

Choice of technology Coriolis – Mass flow

• Easy installation, start-up and no moving parts

• Direct Mass and Density (quality) measurement

• Energy value direct from mass

• Lower risks of measurement uncertainty

• Lower OPEX compared to volume flow technologies

Criteria for supplier choice • Micro Motion give the end customer experiences of earlier solutions

• Micro Motion give the best accuracy measurement

• Micro Motion give the best Smart Diagnostic from the meters

• Micro Motion give Smart Meter Verification - Self Checking Features at -200 degC

Project Leader Jan Augustsson


Typical Applications


Wide success in LNG



Agenda






– Summary


Increased Gas Availability is Creating New LNG Application Opportunities

Worldwide gas resources in billion m³ World: 537 years, Europe 161 years


Aviation

NASA N+4

2040/50 timeframe


Rail

World record (Russia)

– Largest load by a single locomotive of any fuel type

– 16,000 tonnes, 170 rail cars

Potential fuel savings of millions of dollars for operators


Off Road

Very heavy fuel use

Fewer weight restrictions

Potential fuel savings of

millions of dollars for

operators


Marine - LNG Shipping


Marine - LNG Bunkering


Road - Status and Growth NGV’s

0

5,000,000

10,000,000

15,000,000

20,000,000

25,000,000

30,000,000

35,000,000

40,000,000

Natural Gas Vehicle Growth Worldwide Actual with Projections and Trendlines to 2015

Exponential

Trendline ( based

on Actual)

5-Year Moving Average

Linear Trendline (based on Actual)

Red bars: Growth projected in 2006

Blue bars: Natural Gas Vehicles - Annual Total

©NGV Global 2012 www.iangv.org


Road



Agenda






– Summary


Coriolis Technology - Design

Process fluid/gas enters the

sensor and is split with half

the flow in each tube

Drive Coil

Drive coil vibrates tubes at

natural frequency

Pick-off Coils

Pick-off coils on inlet and outlet

sides for flow signal


Coriolis Technology - Operation

NO FLOW

No Coriolis effect (twist in the tubes)

Left & right pick-off coil signals in phase

FLOW

Coriolis effect causes tubes to twist

Left & right pick-off coil signals out of phase

T direct measurement of mass flow rate


Coriolis Technology - Density

Increased natural frequency

as mass decreases

Decreased natural frequency

as mass increases


Multi Variable Digital (MVD)

Dramatically reduce signal noise and obtain faster response time

Measure multiple variables for accurate process control

Identify and resolve problems easily with built-in smart diagnostics

MVD Technology enables higher meter stability and the flat-spec.

Electronics – MVD Technology ™

Time mV

Flow

Analog Updated Flow Measurement

Typically 330-350 milliseconds

Time mV

Flow

Digital Signal Processing Updated Flow Measurement

2400 times per tube period


Electronics – MVD Technology ™

Mass Flow (lb/min)

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

0 50 100 150 200 250

Time (sec.)

Analog Filtered Analog DSP

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

% of Nominal Flow

Accu

racy

, P

erc

en

t

Analog Transmitter

0.83% Accuracy at same flow rate

MVD Transmitter

0,35% Accuracy at 50:1 turndown

Gases



Agenda






– Summary


LNG Dispensing Made Easy LNG as cryogenic liquid is difficult to measure accurately with a system other than a mass flow meter. Traditional flow technologies cannot measure two-phase flow and also require separate density and temperature measurements. Micro Motion has solved these challenges with a Coriolis meter capable of:

Two-phase flow measurement

Direct Mass measurement

Multivariable (MF, VF, D, T)

No leak points

Real-time data

Safe …. No maintenance required


Advantages of Coriolis “Elite” meter

MODBUS Direct connection

• Drive gain

• Slug Flow

• Density

• Temperature

• Mass Flow

• Volume flow

Pump Start

Fluid Status

Traditional technology

or other Coriolis

• Analog Hz or 4－20mA

• No fluid status can be identified

• MODBUS to be more time developed

Measurement


Operation Interface and Control Panel

Starting refuel：

After short circulation，the dispenser control system will determine if to starting fueling

against 3 conditions together :

1. Density

2. Temperature

3. Drive gain

Display with all Process parameters in Control panel - Working status of Mass flow meter


Filling Process 1. Truck arrives

2. Driver connect the flexible(s)

3. Log on the payment system the station “wakes up” and cools down (pump and/or flowmeter). Depending in which state the station is.

4. The system controls the “drive gain” is confirming the cooling down

5. When the station is “ready” the light goes green and the operator can push “start” button

6. The system control the truck’s tank pressure and decide if a vent is required or not according to the residual pressure un the tank

7. When the tank pressure is in the required range, vent step stops and filling start

8. Counting is stating for the commercial transaction

9. Stop flow

10. Disconnection, filling complete


Success in MID LNG Dispensing


What is OIML and MID?

A set of Measuring System requirements to guarantee:

You get what you are paying for and you can prove it

You deliver what you are being paid for and you can prove it

OIML is the global standard and MID is European Directive.

NMi and Emerson cooperated (with system-owners) to achieve fulfillment of MID (and OIML) for Legal applications.

MID OIML


MID covered applications

Meter: 0,2; System: 0,3






Globally Recognized Cryogenic Custody Transfer Approval – MID by NMi


Our Paper on Applicability of Coriolis Technology for LNG Service


Custody Transfer: Uncertainty = Income / cost

The possibility of quantity claims is an unacceptable liability for companies that can damage their reputation and can tie them up in legal disputes

Uncertainties (Accuracy)



Summary







Thanks to our LNG related business partners


Thank you

Any questions

[email protected]

mailto:[email protected]

Documents

Coriolis Metering” in LNG Transportation · Coriolis Metering in LNG Transportation ... Driver connect the flexible(s) 3. ... Uncertainty = Income / cost