instrumentation analyzer pressure regulation and vent recovery system frank ruiz, ruiz &...

23
Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates IF PAC SM - 2001 F ifteenth International F orum Process Analytical C h e m i s tr y SM J anuary 21-24, 2001, Amelia Island, F lorida, U .S .A

Post on 22-Dec-2015

226 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Instrumentation

Analyzer Pressure Regulation and

Vent Recovery System

Frank Ruiz, Ruiz & Associates

I F P A C S M - 2 0 0 1F i f t e e n t h I n t e r n a t i o n a l F o r u m

P r o c e s s A n a l y t i c a l C h e m i s t r y S M

J a n u a r y 2 1 - 2 4 , 2 0 0 1 ,A m e l i a I s l a n d , F l o r i d a , U . S . A

Page 2: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

TopicsTopics CURRENT TECHNOLOGYCURRENT TECHNOLOGY

PROBLEMS CONTROLLING SAMPLE FLOW AND PROBLEMS CONTROLLING SAMPLE FLOW AND PRESSUREPRESSURE

PRESSURE REGULATORS AND FLOW PRESSURE REGULATORS AND FLOW CONTROLLERSCONTROLLERS

COMBINATION OF PRESSURE AND FLOW CONTROLCOMBINATION OF PRESSURE AND FLOW CONTROL

TEST RESULTSTEST RESULTS

SAMPLE SYSTEM WITH FLOW AND PRESSURE SAMPLE SYSTEM WITH FLOW AND PRESSURE REGULATIONREGULATION

Page 3: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Typical Continuous Analyzer SystemTypical Continuous Analyzer System

PI PI0 100#

FLO

W ZERO

CALIBRATION

ANALYZER

BACKPRESSUREREGULATOR

FLOW ADJUST

Page 4: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Typical Continuous Analyzer SystemTypical Continuous Analyzer System FLOW RATE CONTROLLEDFLOW RATE CONTROLLED

WITH A NEEDLE VALVEWITH A NEEDLE VALVE

FLOW RATE IS A FUNCTIONFLOW RATE IS A FUNCTION

OF OF P ACROSS VALVEP ACROSS VALVE

P VARIES WITH INLETP VARIES WITH INLET

PRESSURES CHANGESPRESSURES CHANGES

THEREFORE: FLOW VARIESTHEREFORE: FLOW VARIES

WITH INLET PRESSURE WITH INLET PRESSURE

CHANGESCHANGES

PI PI0 100#

FLOW

ZERO

CALIBRATION

ANALYZER

BACKPRESSUREREGULATOR

FLOW ADJUST

Page 5: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

WHAT HAPPENS TO ANALYZER PRESSURE WHAT HAPPENS TO ANALYZER PRESSURE WHEN FLOW RATE VARIES?WHEN FLOW RATE VARIES?

Page 6: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Control Pressure vs. FlowControl Pressure vs. Flow

Analyzer Function (Test 5- Constant Upstream Pressure / Downstream Vacuum)

11.30

11.40

11.50

11.60

11.70

11.80

11.90

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5

Analyzer Flow (LPM)

An

aly

ze

r P

res

su

re (

PS

IA)

P2 / (PSIA)

Page 7: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

How Can We Control Flow?How Can We Control Flow?

Page 8: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Flow ControllersFlow Controllers

FLOW CONTROLLERWITH

UPSTREAM REFERENCE

FLOW CONTROLLERWITH

DOWNSTREAM STREAM REFERENCE

Page 9: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Flow ControllersFlow Controllers FLOW CONTROLLERSFLOW CONTROLLERS

MAINTAIN A CONSTANT MAINTAIN A CONSTANT

PRESSURE DIFFERENTIAL PRESSURE DIFFERENTIAL

ACROSS A RESTRICTORACROSS A RESTRICTOR

ABILITY TO REFERENCE UPSTREAM OR DOWNSTREAM ABILITY TO REFERENCE UPSTREAM OR DOWNSTREAM PRESSUREPRESSURE

CONTROL VOLUMETRIC FLOW, CONTROL VOLUMETRIC FLOW, NOT MASS FLOW.NOT MASS FLOW.

IMPORTANT TO MAINTAIN A CONSTANT REFERENCE PRESSUREIMPORTANT TO MAINTAIN A CONSTANT REFERENCE PRESSURE

FLOW CONTROLLERWITH

UPSTREAM REFERENCE

FLOW CONTROLLERWITH

DOWNSTREAM STREAM REFERENCE

Page 10: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

IF A PRESSURE REGULATOR IS USED TO MAINTAIN IF A PRESSURE REGULATOR IS USED TO MAINTAIN A CONSTANT REFERENCE PRESSURE TO THE A CONSTANT REFERENCE PRESSURE TO THE FLOW CONTROLLER, THE FLOW WILL REMAIN FLOW CONTROLLER, THE FLOW WILL REMAIN

CONSTANT.CONSTANT.

IF A FLOW CONTROLLER IS USED TO MAINTAIN A IF A FLOW CONTROLLER IS USED TO MAINTAIN A CONSTANT FLOW THROUGH THE PRESURE CONSTANT FLOW THROUGH THE PRESURE

REGULATOR, THE REGULATED PRESSURE WILL REGULATOR, THE REGULATED PRESSURE WILL REMAIN CONSTANT.REMAIN CONSTANT.

Page 11: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Combining Pressure and Flow ControlCombining Pressure and Flow Control

FLOW CONTROLLERWITH

UPSTREAM REFERENCE

FLOW CONTROLLERWITH

DOWNSTREAM STREAM REFERENCE

ANALYZER

ANALYZER

Page 12: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Test SetupTest Setup

FLOW CONTROLLERWITH

UPSTREAM REFERENCE

ANALYZER

FLOW CONTROLLERWITH

UPSTREAM REFERENCE

ANALYZER

VACUUM PUMP

VARY SUPPLYPRESSURE

VARY OUTLETPRESSURE

N2

Page 13: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Test ObjectivesTest Objectives TEST PRESSURE AND FLOW STABILITY BY TEST PRESSURE AND FLOW STABILITY BY

VARYING SUPPLY PRESSURE FROM 15 TO 90 PSIG VARYING SUPPLY PRESSURE FROM 15 TO 90 PSIG WHILE KEEPING THE OUTLET PRESSURE WHILE KEEPING THE OUTLET PRESSURE CONSTANTCONSTANT

TEST STABILITY BY VARYING THE OUTLET TEST STABILITY BY VARYING THE OUTLET PRESSURE FROM 0 TO 30” Hg WHILE KEEPING PRESSURE FROM 0 TO 30” Hg WHILE KEEPING THE SUPPLY PRESSURE CONSTANTTHE SUPPLY PRESSURE CONSTANT

THE FLOW RATE WILL BE 1 LPM FOR ALL TESTSTHE FLOW RATE WILL BE 1 LPM FOR ALL TESTS

Page 14: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Pressure Control Test #1Pressure Control Test #1 ANALYZERANALYZER

PRESSURE SET PRESSURE SET

@ 5 PSIG @ 5 PSIG

SUPPLY PRESSURE SUPPLY PRESSURE

VARIED 20 TO VARIED 20 TO

90 PSIG90 PSIG

-1

0

1

2

3

4

5

6

20 30 40 50 60 70 80 90

Inlet to IR4000 PSIG

PS

IG, L

PM

ANALYZER PRESS

Flow

Page 15: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Pressure Control Test #2Pressure Control Test #2 ANALYZERANALYZER

PRESSURE SET PRESSURE SET

@ 20.5 PSIG @ 20.5 PSIG

SUPPLY PRESSURESUPPLY PRESSURE

VARIED 30 TOVARIED 30 TO

90 PSIG90 PSIG

0

5

10

15

20

30 40 50 60 70 80 90

Inlet to IR4000 PSIG

PS

IG, L

PM

ANALYZER PRESS.

Flow

Page 16: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Pressure Control Test #3Pressure Control Test #3 ANALYZERANALYZER

PRESSURE SET PRESSURE SET

@ 30 PSIG@ 30 PSIG

SUPPLY PRESSURESUPPLY PRESSURE

SET @ 50 PSIGSET @ 50 PSIG

OUTLET PRESSURE OUTLET PRESSURE

VARIED 0 TO 30 PSIGVARIED 0 TO 30 PSIG

-10

0

10

20

30

40

50

60

0 5 10 15 20 25 27 28 29 30

Back Pressure PSIG

PS

IG, L

PM SUPPLY

ANALYZER

Flow

Page 17: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Pressure Control Test #4Pressure Control Test #4 ANALYZERANALYZER

PRESSURE SET PRESSURE SET

@ 12.7 PSIA@ 12.7 PSIA

SUPPLY PRESSURESUPPLY PRESSURE

SET @ ATMOSPHERICSET @ ATMOSPHERIC

OUTLET PRESSURE OUTLET PRESSURE

VARIED 1 TO 11 PSIAVARIED 1 TO 11 PSIA

0

2

4

6

8

10

12

14

Downstream Pressure PSIA

PS

IA, L

PM SUPPLY (PSIA)

ANALYZER(PSIA)

Flow

Page 18: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

CONCLUSIONCONCLUSION

The flow and pressure were held very steady with the combination of The flow and pressure were held very steady with the combination of Flow and Pressure RegulatorsFlow and Pressure Regulators

Page 19: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

EVEN BETTER REGULATION IS ACHIEVED BY EVEN BETTER REGULATION IS ACHIEVED BY OPTIMIZING THE REGULATOR CONTROL RANGE OPTIMIZING THE REGULATOR CONTROL RANGE AND CvAND Cv

-15 -10 -5 0 5 10 15 20 25 30

NPR-4000

IR-4000

IR-4001

CONTROL RANGE PSIG

Page 20: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Example SystemExample System

PROCESS LINE

ANALYZER

1/4 " TUBE100 FEET

Veriflo SC-423XL-SSFlow Controller

PUMP

By-Pass Flow

AnalyzerSample Flow

30 0in Hg

VENT RECOVERY HEADER

Fig. 1

IR-4001

Page 21: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Continuous Analyzer Sample SystemContinuous Analyzer Sample System

ANALYZER

AIR

FLOWCONTROLLER

ZERO

PARKERSTREAM SWITCH

R-max

PI

PI

SAMPLE INLET

SAMPLE RETURN

RELIEF VENT

Page 22: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Page 23: Instrumentation Analyzer Pressure Regulation and Vent Recovery System Frank Ruiz, Ruiz & Associates

Analyzer Pressure Regulation & Analyzer Pressure Regulation & Vent Recovery SystemVent Recovery System

Thank you!Thank you!

Questions?Questions?