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Boiler Efficiency and Combustion Control

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Overview Introduction Components Control Strategies Auxiliary Controllers / Flame Safeguard SCADA System Integration Competitive Comparison Summary Introduction The ... – PowerPoint PPT presentation

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Title: Boiler Efficiency and Combustion Control


1
BurnerMate TS Overview
2
Overview
  • Introduction
  • Components
  • Control Strategies
  • Auxiliary Controllers / Flame Safeguard
  • SCADA System Integration
  • Competitive Comparison
  • Summary

3
Introduction
  • The BurnerMate TS is a combined boiler control,
    flame safeguard, and monitoring system with a
    touch screen operator interface.
  • BurnerMate is a full scope control package that
    assures safe and efficient control with undivided
    system integration responsibility.

4
Experience
  • Preferred Instruments has 35 years of Combustion
    Control Experience with
  • A Third Generation Digital Controller
  • Over 3000 Boiler Control System Installations
  • Over 2400 PCC II/III Controllers Installed
    Exclusively in Combustion Control Applications
  • Over 45 SCADA/Flex Projects
  • 640 Rotary Cup Burner Projects

5
BurnerMate TS Components
6
System Composition
7
Touch Screen Operator Interface
Fully Integrated Touch Screen
8
Touch Screen Operator Interface
  • Monitor and control boiler operation, setpoints,
    and process data from one convenient display
  • Commissioning activities are laid out in an easy
    to follow step-by-step procedure, eliminating the
    need for knowledge of controller menus and
    programming languages

9
Touch Screen Operator Interface
Real time boiler management data
Auto/Manual Control
Alarm banner, Silence button, and Navigation
10
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15
DCS-III Programmable Control
DCS-III Controller
16
DCS-III Programmable Control
  • The DCS-III is a state-of-the-art, boiler-focused
    programmable logic controller
  • The large I/O quantity, small sub-panel foot
    print, intuitive Blockware, redundant memories,
    and built-in industry standard communication
    allows the DCS-III to be integrated into complex
    boiler control systems with a minimum number of
    external components

17
Easy Commissioning
  • The Learn Mode feature allows multiple F(x)
    block input vs. output profiles to be entered
    simultaneously with a push of a button!

Store button to simultaneously store the firing
rate, oxygen and burner air flow rate value into
the appropriate F(x) blocks
18
BurnerMate TS
Advanced Communication
19
Internet, Web Site Access
  • A standard WEB Browser provides remote monitoring
    and operation
  • Custom software is not required
  • Historical Alarm and event data can be imported
    to spreadsheet applications such as MS Excel

20
Intranet Communication
  • The ethernet communication port is easily
    assigned an IP address and connected to a
    facility wide network
  • Remote monitoring, control and data collection is
    available via a standard WEB Browser
  • Building Automation Systems and SCADA Systems are
    interfaced via industry standard MODBUS Ethernet
    communication

21
Integral Oxygen Analyzer
ZP-xx
Oxygen Probe
DCS-III with "Z" Option Board
190130
Connecting Cable
Power Supply
Calibration Gas Input
Grade Level Connection By Others
  • No separate analyzer, one less item to mount

22
Integral Oxygen Analyzer
  • Proven Reliable
  • Sensing element has been proven reliable in 100s
    of installation over the last 10 years
  • No Reference Air
  • The probe uses ambient air as a reference.
  • Competitors use instrument air and run the risk
    of element cracking due to water
  • Automated, menu driven pushbutton calibration.
  • Fully automatic calibration package available.

23
Integral Oxygen Analyzer
  • Thick cell
  • Avoids premature cell failures
  • Ceramic heater
  • provides reliable long life
  • Complete detailed diagnostics
  • Automatic impedance checking
  • Alarms when time to recalibrate
  • Alarms when reaching end of cell life
  • Optional fuel gas temperature element T/C input

24
BurnerMate TSControl Strategies
25
Fully Metered System
26
Fully Metered System
  • This control strategy with oxygen trim and
    variable speed fan control offers the best
    opportunity to save fuel and electrical cost with
    a control system upgrade
  • This strategy measures both the fuel flow and the
    combustion air flow
  • PID control is used for both fuel and air flow
    control, assuring the accurate maintenance of
    fuel and air flow setpoints

27
Parallel Positioning System
28
Parallel Positioning System
  • This control strategy includes up to five (5)
    servo channels, allowing independent control of
    fuel valves, air and fuel gas re-circulation
    dampers
  • The fuel-air ratio is established and adjusted by
    use of a soft function curve of fuel valve vs.
    damper position
  • Parallel positioning enables tighter fuel-air
    ratio control, which improves boiler efficiency
  • Combining this control method with oxygen trim
    and variable speed fan control offers substantial
    cost savings for a fast payback

29
Single Point Positioning System
30
Single Point Positioning System
  • This control strategy mechanically links the fuel
    valve, air and flue gas control dampers to a
    single actuator
  • Generally, the fuel valve has a characterizable
    flow versus position relationship that is used to
    establish the fuel-air ratio over the range of
    modulation
  • This method is recommended when the boiler size
    or service hours do not justify addition of a VSD

31
BurnerMate TSAuxiliary Controller / Flame
Safeguard
32
Integrated Auxiliary Controller
  • Draft Control Stable repeatable draft control
    is essential for efficient boiler operation.
    This is especially important for boilers with
    induced Flue Gas Recirculation (FGR) Nox
    reduction.
  • Feedwater Control Single element, two element
    or three element feedwater control may be
    provided. Water column blowdown is prompted and
    logged to ensure proper maintenance.

33
Flame Safeguard
  • Features
  • The Flame Safeguard System provides the proper
    burner sequencing, ignition and flame monitoring
    protection on single burner, automatically
    ignited oil or gas fired boilers.
  • The system uses a fail-safe, de-energize to
    trip design. Upon the loss of system power the
    fuel safety shutoff valves are automatically
    closed and ignition components are de-energized.

34
Flame Safeguard
  • Features (continued)
  • On a safety shutdown, the message display will
    advise the operator that the control is in
    Lockout and will indicate the specific cause
    and the state in the operating sequence where the
    shutdown occurred.
  • Proof of purge, low fire position interlocks,
    and fuel valve end switch safety checks are also
    included.
  • A drum level conductivity probe relay is
    incorporated for an auxiliary Low Water Cutout
    safety interlock.

35
BurnerMate TSSCADA System Integration
36
SCADA System
  • Supervisory Control And Data Acquisition
  • Windows XP based workstations
  • Programmable Controller based combustion control
    hardware
  • Up to 31 I/O per controller
  • Touch Screen interface can be used as backup
    control station if the workstation, or
    communication network breaks down
  • Service Manual mode can be used as backup
    control station if the Loop Controller fails

37
Expanded Remote Systems
38
Process Style Boiler Overview
39
Flame Safeguard Overview
40
Store Data for Analysis Later
41
BurnerMate TSCompetitive Comparison
42
Comparison
43
Comparison
44
Comparison
45
Comparison
46
Summary
  • BurnerMate TS has.
  • Integrated fuel-air ratio, flame safeguard,
    draft, and feedwater controls
  • Single Point Positioning, Parallel Positioning,
    and Fully Metered Combustion Control
  • Single or Dual Fuel Flame Safeguard with easy
    trouble shooting.
  • Low Cost Full Scope Package.

47
Preferred Utilities Manufacturing Corp
Preferred Utilities Manufacturing
Corporation 31-35 South St. Danbury CT T
(203) 743-6741 F (203) 798-7313 www.preferred-m
fg.com
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