Transcript CyCurex - Cylenchar.com

Cylenchar Limited
breathing life back into a
contaminated
environment
Copyright © 2013
CyCurex® - Technology Overview
• CyCurex® is a generic reagent for the
remediation of toxic heavy metals.
• The risks of harm from toxic heavy
metals wastes are dramatically
increased if they are soluble.
• CyCurex® treatment converts soluble
metal compounds into their insoluble
metal sulphides – back to the form
which nature intended them to be!
• Toxicity and mobility of wastes are
dramatically reduced – and so are the
costs associated with handling and
disposal.
• CyCurex® can bind and stabilize a
broad spectrum of heavy metals in a
wide variety of substrates, to within
internationally accepted regulatory
limits.
Copyright © 2013
CyCurex® - System Requirements
• The CyCurex® system in capable of being installed as a piggy-back
system in existing wet or dry FGD systems...
• or, installed as a stand-alone induct injection system. (As
illustrated by SRI trial at 1MW level).
• Optimum injection temperatures 300-370oF / 160-190oC, but can
operate at higher temperatures.
• Requirement for 1-2 seconds gas contact time. Less time if hotter.
• Ideal location – post rudimentary dust control (i.e. post ESP).
• Installation: CyCurex® Spray system installed in a 300-370oF /
160-190oC cyclone, post ESP or Hot Bag-house (400-420oF / 200220oC).
• Advantages: Low cost option, Minimum plant downtime during
retrofit, Low O&M costs, All fly-ash by-products remain saleable,
and even works in dust laden flues…
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Key Advantages of CyCurex®
for Mercury Control in Power Plants
• Remediates both oxidised and difficult to treat elemental mercury.
• Does not interfere with the existing wet or dry scrubber chemistry.
• Renders a broad spectrum of heavy metals contaminants insoluble
and long term stable. So, retains the commercial integrity of
existing saleable by-product gypsum, and does not generate a
harmful by-product in need of costly landfill disposal.
• CyCurex® co-benefits include; Opacity (SO3) reduction, plus lead
and selenium control in plant waters.
• Can be installed in new plants or retrofitted into existing facilities
at a fraction of the cost of competitor systems.
• Equally applicable and cost effective in both small and large-scale
combustion operations, and thus can find application in small-scale
incinerators or micro generation power systems, where PAC
systems are cost prohibitive.
• CyCurex® does not require any costly pre-preparation, handling or
storage.
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Pilot Trial of the CyCurex ® at Southern Research Institute
Coal Combustion Unit, Birmingham, AL, USA
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SRI 1 Mega Watt coal
combustion unit, was specifically
designed to model processes
experienced by Power utilities.
PRB and PRB-Bituminous blends
evaluated were evaluated.
CyCurex® can rapidly remediate
both moderate and high
concentrations of oxidised and
elemental mercury at short
expose times as low as 1.1
seconds.
In a gas stream carrying a
1,000µg/M3 total mercury and
at least 34µg/M3 of elemental
mercury, CyCurex® was easily
able to reduce the total mercury
concentration by >90%, and it
was able to deal with >75% of
the elemental mercury within
1.1 to 2.2 seconds exposure.
Highly cost competitive vs PAC
CyCurex ®
Scrubber
Vent to
Stack
Inlet
Mercury
Probe
Inlet Flow
meter and
Thermocouple
Flow from
Primary Baghouse
Outlet
Thermocouple
Scrubber
Waste
Discharge
Secondary
Bag-house
I.D. Fan
Outlet Mercury
Probe
Reagent feeds to
6 x Spray Nozzles
c
c
c
CyCurex ®
B-MTA
Packed
Column
Caustic
Scrubber
CyCurex ® A25
CyCurex ® B2
Metering Pump Skids
Copyright © 2013
Southern Research Institute
Dry Scrubber Trial
Expt 30b, Treatment of Coal Combustion Gas with CyCurex©
Approx. 2.2 secs residence time @ 320-220oF
Coal Type: North Antilope Rochelle PRB: Eastern Bituminous (80:20), Spiked with 7.5mg Hg/lb
1600
1400
1200
Hg μg/M3
Hg(0) Inlet
1000
Hg(tot) Inlet
800
Hg(0) Outlet
600
Hg(tot) Outlet
400
200
0
09:01:31
10:31:31
12:01:31
Time on 30 Apr 2010
Copyright © 2013
Sothern Research Institute Dry Scrubber Trial
Mercury removal performance
Treatment of Coal Combustion Gas with CyCurex®
Approx. 1.1 secs residence time @ 320-220oF
Coal Type: North Antelope Rochelle PRB, Spiked with 1mg Hg/lb
140
Hg μg/M3
120
100
27a
80
28a
28b
60
29a
40
29b
20
0
0.00
0.52
1.05
1.57
2.09
2.62
3.14
CyCurex© gals / Mscf
(US gallons per Million US Standard Cubic Feet)
Copyright © 2013
Southern Research Institute
Dry Scrubber Trial- mercury removal performance
Expt 30b, Second Order Rate of Consumption of Hg0 by CyCurex®
0.08
0.07
0.06
1 / Hg μg/M3
0.05
0.04
0.03
y = 0.014x - 0.0081
R2 = 0.9911
0.02
0.01
0
13:22:31
13:28:31
13:34:31
13:40:31
13:46:31
-0.01
Time on 30 Apr 2010
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SRI Dry Scrubber Trial - Residue Analysis
Copyright © 2013
SRI Dry Scrubber Trial
Residue Analysis
CyCurex® - PRB-Bituminous blended coal combustion gas
Vessel Scale Isolate 24 April 2010
Heavy Metals Analysis
Heavy Metal
Arsenic
Antimony
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Selenium
Zinc
Total Metals
mg/Kg
4.2
0.72
<0.20
690
47
5.0
67
350
29
25
Leachable Metals
By UK-NRA, TCLP
equivalent procedure
mg/Litre
0.00084
0.00055
<0.00020
0.0017
0.020
0.0052
0.0012
0.26
0.11
<0.0060
TCLP Regulated
Limit
40CFR Part 261.24
mg/Litre
5.0
1.0
1.0
5.0
N/A
5.0
0.2
10.0
1.0
700
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For further information contact:
Dr Peter J. Hurley
Tel: +44 (0)1484 517 417
Fax: +44 (0)1484 516 098
Mobile +44 (0)7968 337 107
e-mail: [email protected]
www.cylenchar.com
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