Latest Equipment Innovations for LCPD

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5 Νοε 2013 (πριν από 4 χρόνια και 8 μέρες)

81 εμφανίσεις

:
Latest Equipment Innovations for LCPD

Colin Blackmore/Mark Davidson SICK (UK) Ltd

AQE Conference March 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

SICK process automation

Industry overview

2

Oil & gas

Power

Process

Emission

Cement

Metal & steel

Chemical

Petrochem &

refineries

Pulp & paper

Waste

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

SICK process automation

Scopes

Measuring devices and system
solutions for continuous
emission monitoring


Entire product range for all
requirements


In situ and extractive
measurement technologies


Solutions for all industries and
legal regulations

Emission

Analyser for a variety of
process measurements

Process


Compact transmitters with

1 to 2 measuring components


High
-
performance analysers
with up to 4 measuring
components


Multi
-
component analysers

> 4 measuring components

Measuring devices for tunnel
monitoring

Tunnel


Rugged measuring devices
with 1 to 3 measuring
components


Measurement of air quality
and visibility


Early fire detection

3

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

Equipment for LCPD

:
Process gas analysers

-
DeNOx process monitoring and control equipment

:
Continuous Emission Monitors

-

General Gas Analyser
systems for Coal, Gas, Oil Power Stations

-
CCGT Plant and measurement of low levels of NOx

-
Mercury monitoring in Coal
-
fired Power Stations (separate
Workshop presentation)

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

DeNOx Plant


Gas

preheater


FGD


EP

Air

preheater


Boiler


Water


FGD plant




gypsum


Limestone


Ashes


Slag


Coal


Air


Ammonia

DeNOx


reactor


EP

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

Why do we want to measure?


With the help of a catalyst, NO and NH
3

react to N
2

and water:


4
NO

+ 4
NH
3

+ O
2



4
N
2

+ 6 H
2
O




NO measurement is important for the process control:



a) raw gas before catalyst : to calculate the NH
3

injection rate



based on the “NO load”



b) check catalyst efficiency and NH
3
-
trim



Application
SCR DeNOx Plant

1

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

Technical Data:



Measuring Range:

before SCR
: up to 1,500ppm NO depending on burner technology

after SCR

: up to 100ppm NO depending on local regulation




gas temperature: 340 ... 420
°
C



high dust : typically 15g/m3




duct size:

typically 5m (1.5 .... >6m)

Application SCR DeNOx Plant

1

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

Extractive Technology Challenges

:
Multiple Sample Probes with graded entry holes to try and
balance the sample flow across large ducts and ensure
accurate measurements

:
Standard extractive CEM system with Filtration, Cooling,
Sample Switching


Problems



-

very high dust burden


-

high maintenance load on Sample Systems


-

unreliable systems


: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

In
-
situ Technology Challenges

:
Cross duct not practical due to high Dust Burden, extinction of
signal in large ducts

:
High temperature application


:
Sick Solution


extract sample and measure with small path
length

-
Orientate probe so as to avoid large particles being captured

-
If 15m/sec flow achieved then remaining dust stays in
suspension

-
Dust shows as general extinction, which can be calibrated out

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

GM32: The extended In
-
Situ solution

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

>>> DOAS

Differential

Optical

Absorption

Spectroscopy



Wave length

SO
2

NO

NH3

NO
2

<
--

190 nm

--
> 400 nm

GM32
-

optimized measuring value evaluation

Absorption curves of SO2, NO, NO2 and NH3

:
Evaluation principle DOAS with sophisticated algorithms

:
No influence of dust, droplets, humidity and other gases

:
In
-
situ >>> delay free

:
High and stable accuracy for high and low measuring ranges


: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

GM32
-

Optical System
-

Control Cycle


:
Advantages:


-
Automatic self test
Basic,Pro


and upon request

-
Check of zero
Basic,Pro

and span
Pro


for each component.


No test gases required.


-
Compliance to EN 14181, EN 15267
-
3


QAL3 zero & span values
Pro


TÜV approval
Pro


-
Interval adjustable
Basic,Pro


:
Pro Version with filter wheel

:
Basic version without ~

-
no difference in quality of measurement

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

GM32

SCR De
-
NOx control



: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

CCGT plants
-

CEMs

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 5


Power

Combustion air

Power

Gas

Generator

Generator

Flow

Steam turbine

Gas turbine

Cooling air

Heat recovery steam generator

Steam

Data Acquisition system Cem View or
MEAC2000

FLOW

Stack

CO NO
x,
, O
2,

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 5


Application: CEMS for CCPP



:

Extractive Technology

:

In situ Technology

PowerCEMS100

Gas

CO, NO
x
, O
2
,

option SO
2,

CO
2


FLOWSIC100

Flow

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 5


Minimum Requirements / Recommendations




:

Gas components

-
Nitrogen monoxide (NO) + Nitrogen dioxide (NO
2
) = “NO
x

as NO
2


-

IR not low enough ranges for NO

-

Carbon monoxide (CO)

-

Oxygen (O
2
), correction to reference conditions

:

Option

-

Sulfur dioxide (SO
2
), Carbon dioxide (CO
2
)

:

Flow measurement

:

Data acquisition system according to the EN or US EPA requirements

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 : Name (Date) 6

Best Solution: PowerCEMS 100


MAC800 compact system PowerCEMS 100

GMS 830 and 831 analyzer
modules

sample gas
cooler

Control unit

BCU

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 : Name (Date) 8


PowerCEMS 100








>

Certified according to EN 15267
-
2 and EN 15267
-
3 to be used as AMS for CCPP

>

Compliant to EPA Part 60 and Part 75 CEMS requirements for gas fired power plants
>

Single central operating unit (BCU) for easy operation

>

No NOx converter for better measurement accuracy and lower cost of consumables

>

Low level CO monitoring done by field proven UNOR best accuracy of any NDIR on the
market.

>

Compact, suitable for wall mounting

>

Interface to DAS or DCS via Modbus or OPC or hard wire, adaptable to customer’s
requirements.

: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 : Name (Date) 8


Best Solution: Flowsic100




>

Flue gas temperatures up to 450
°
C

>

High accuracy even at gas velocities near zero

>

Corrosion resistant Titanium transducers as standard
>

Representative measurement using cross
-
stack
version


: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 11


Why is DEFOR better than Chemiluminescence

?



>

Continuous individual measurement of up
to 3 components NO, NO
2
and SO
2

>

No interference from background gases
(H
2
0 and CO
2
show no absorption in the
UV range)



>

Adjustment unit for calibration of DEFOR without using test gas

>

No Converter, No Ozone = less trouble


: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

: SICK MAIHAK GmbH Power_CEMS forCCPP_en_2012_09 11


GMS800 Advantages




:

No need to use a NOx converter, change
converter cartridges

:

User
-
friendly analyzer system

:

Designed for lower maintenance: simple single
-
point linearization, excellent thermal stability

:

With the UVRAS principle low ranges of NO, NO2, SO2 (0
-

25 ppm) can be accurately and
individually
measured.

:

Using the NDIR principle to measure CO in low ppm ranges (20 ppm) can be achieved. New
Mounting of the NDIR bench on rubber supports reduces vibration sensitivity.

:

Using the paramagnetic measuring principle to analyze O2

:

Latest cold dry CEMS analyzer technology UNOR & DEFOR with an excellent value for CCPP


: SICK MAIHAK GmbH

:
SICK process automation

: C.Blackmore/M.Davidson AQE 2013

Emission monitoring

Application
-
specific fully configurable system

Dust, volume flow (in situ)

All required gas components
(extractive)

(SO
2
, NO, NO
2
, NH
3
, HF, CO,
CO
2
, CH
4
, HCl,N
2
O, H
2
O...)

Connecting
additional networks
using standard
interfaces

High
-
grade

analyser modules
and components

Central control unit

28


:
Thank you for your attention.