On-line Particle Counters in the Thermal Power Plant Joe Zimmerman - - PowerPoint PPT Presentation

▶
on line particle counters
SMART_READER_LITE
LIVE PREVIEW

On-line Particle Counters in the Thermal Power Plant Joe Zimmerman - - PowerPoint PPT Presentation

Aug 29, 2022 249 likes •661 views

On-line Particle Counters in the Thermal Power Plant Joe Zimmerman Director of Power Industry Sales Chemtrac, Inc. Introduction Introduction High Purity Water is Essential in the Power Plant Steam Cycle Make-up water Pretreatment

slide-1
SLIDE 1

On-line Particle Counters in the Thermal Power Plant

Joe Zimmerman Director of Power Industry Sales Chemtrac, Inc.

slide-2
SLIDE 2

Introduction

slide-3
SLIDE 3

Introduction

High Purity Water is Essential in the Power Plant

 Steam Cycle  Make-up water

Pretreatment & Steam Cycle Chemistry Monitoring

 Grab samples  Composite Sampling  On-line Continuous Monitoring

Particle Detection

 Steam Cycle  Make up water

slide-4
SLIDE 4

Introduction

Overview I. Particle Detection Technology II. Applications III. Condensate Polisher Monitoring IV. Conclusions

slide-5
SLIDE 5

Particle Detection Technology

slide-6
SLIDE 6

Particle Detection Technology

 Traditional Turbidity Monitors utilize a “light

scattering” measurement

 Particle Counters & Particle Monitors utilize a

“light blockage” measurement

slide-7
SLIDE 7

Particle Detection Technology

Turbidity Monitor

Lamp Photo Detector

0.00 NTU 0.30 NTU

Lens

slide-8
SLIDE 8

Particle Detection Technology Laser Diode Or LED Photo Diode Water Flow Particles Light Beam

slide-9
SLIDE 9

Particle Detection Technology

Particle Counter

 Detect particles > 2 µm  Reports results in particles/ml for up to 8 size ranges

slide-10
SLIDE 10

Particle Detection Technology

Particle Monitor

 Single channel device, producing a “relative”

measurement called a Particle Index (PI)

 The PI will increase with both an increase in particle size

and concentration

slide-11
SLIDE 11

Particle Detection Technology

Particle Counter, Particle Monitor, Turbidity Monitor

How Are Particles Detected?

INSTRUMENT COMPARISON USING AC FINE TEST DUST 50 100 150 200 250 300 350 400 450 500 PARTICLE Cnts/mL - PARTICLE INDEX 0.1 0.2 0.3 TURBIDITY (NTU)

Particle Counter Particle Monitor Turbidimeter

Particle Counter 21 48 75 106 200 300 390 440 Particle Monitor 50 150 170 200 300 390 460 470 Turbidimeter 0.05 0.05 0.05 0.05 0.06 0.06 0.07 0.07
slide-12
SLIDE 12

Particle Detection Technology

On-line Continuous Particle Detection

 Allows for seeing extremely low levels of insoluble

particle contamination

 Real-time results  Complements other measurements (pH, conductivity,

DO, sodium, etc.)

 Limitations

  • Cannot see particles <2 µm
  • Cannot differentiate between types of particles
  • Bubbles cause interference because they are detected as

particles

slide-13
SLIDE 13

Particle Detection Technology

Particle Detection in the Thermal Power Plant

 For this presentation, focus on the particle counter  New development: the ability to report volumetric

concentration in ppb in addition to particles/ml

slide-14
SLIDE 14

Applications

slide-15
SLIDE 15

Applications

Water Treatment Plant

 Monitor filter performance  Assure proper removal of pathogen-size particles

(Cryptosporidium and Giardia)

slide-16
SLIDE 16

Applications

Pre-Treatment

 Monitor filter performance

slide-17
SLIDE 17

Common Backwash Results

slide-18
SLIDE 18

Backwash Based On Effluent Quality

slide-19
SLIDE 19

Applications

Pre-Treatment

 Monitor SDI

slide-20
SLIDE 20

Appications

Steam Cycle Corrosion Product Monitoring

 EPRI corrosion monitoring research has confirmed that ~

90%, or more, of Fe corrosion product transport is in the insoluble (particulate) form

slide-21
SLIDE 21

Applications

CPT Monitoring CPT Monitoring CPT Monitoring CPT Monitoring

EPRI diagram

slide-22
SLIDE 22

Applications

Econ Inlet PI, BFW Flow, Load

760.19 188.85 ECONOMIZE R INLE T PARTICLE INDEX MAIN STEAM PARTICLE INDE X 10/14/2010 5:07:34 AM 10/13/2010 5:07:34 AM 24.00 hours Particle Index 1000 1500 2000 3000

2CFXFEEDWTRF1 1244.0 KLB/HR 2CFXFEEDWTRF2 1232.1 KLB/HR 10/14/2010 5:07:49 AM 10/13/2010 5:07:49 AM FW Flow Transmitter 600 800 1000 1300

2GJ5NETMWATT 173.00 MW 10/14/2010 5:08:14 AM 10/13/2010 5:08:14 AM Unit Load 100 200

slide-23
SLIDE 23

Applications

Volumetric ppb vs. Grab Sample Total Fe ppb

Condensate Monitoring -- Thermal Power Plant in Southeast US

0.00 5000.00 10000.00 15000.00 20000.00 25000.00 0.00 200.00 400.00 600.00 800.00 1000.00 1200.00 1400.00 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 … 11/25/2013 …

slide-24
SLIDE 24

Condensate Polisher Monitoring

slide-25
SLIDE 25

Condensate Polisher Monitoring

Particle Counters Upstream and Downstream

 See insoluble material reduction across the filter  Better identify resin leakage

  • Cond. Filter/Polisher

Particle Counter

Condensate Hotwell

Particle Counter

slide-26
SLIDE 26

Condensate Polisher Monitoring

Upstream Polisher (Hotwell) Downstream Polisher Decrease in insoluble ppb concentration across polisher.

slide-27
SLIDE 27

Condensate Polisher Monitoring

Upstream Polisher (Hotwell) Downstream Polisher Typical reduction in particle concentrations across polisher.

slide-28
SLIDE 28

Condensate Polisher Monitoring

Example of Particle Counter results when a there is a Condensate Polisher Problem

slide-29
SLIDE 29

Condensate Polisher Monitoring

Upstream Polisher (Hotwell) Downstream Polisher Increase in insoluble ppb concentration across polisher.

slide-30
SLIDE 30

Condensate Polisher Monitoring

Upstream Polisher (Hotwell) Downstream Polisher Addition of 30 um particles contributed significantly to total ppb concentration.

slide-31
SLIDE 31

Condensate Polisher Monitoring

Other available diagnostic screen views. Particles per 100 ml ppb based on particle size

slide-32
SLIDE 32

Conclusions

slide-33
SLIDE 33

Conclusions

On-line Particle Monitoring:

 provides real-time indication of insoluble CPT particulate

loading

 allows for continuous data collection & trending  Events or upsets can be detected very quickly  Pretreatment filter performance can be significantly

improved using the proper tools and techniques

 Savings can be realized in energy costs, membrane

cleaning costs, and in cartridge filter replacement costs.

 Upstream and downstream monitoring across the

condensate polishers would offer additional comparative data

slide-34
SLIDE 34

References

Comprehensive Cycle Chemistry Guidelines for Fossil Plants, EPRI

Cycle Chemistry Guidelines for Combined Cycle/HRSGs, EPRI

The Impact of Oxidizing Environment on Feedwater Corrosion and Metal Transport - New tools and Findings, Daniel C. Sampson

Power Plant Particle Applications: Corrosion Product Monitor /Foreign Material / Water Treatment Control and Optimization (presentation), Mike Caravaggio

A Method for Continuously Monitoring and Selectively Sampling Boiler Cycle Water for Metal Oxide Transport Analyses, Richard A. Breckenridge, L. Joseph Hancock, Robert L. Bryant, John W. Clark

An Alternative to Silt Density Index (SDI)…Continuous Particle Counting, Robert L. Bryant

Assessment and Development of Low-Pressure Membrane Integrity Monitoring Tools, AwwaRF

slide-35
SLIDE 35

Chinese Quotation

slide-36
SLIDE 36

Chinese Quotation

欲穷千里目 更上一层楼

To enjoy a grander sight, climb to a greater height.

slide-37
SLIDE 37
slide-38
SLIDE 38

"There's a way to do it better - find it."

  • - Thomas Edison
slide-39
SLIDE 39

谢 谢