Gas Remediation Technologies from W.L. Gore and Associates ...

W. L. Gore & Associates

Gas Remediation Technologies from W.L. Gore and Associates

GORE Mercury Control System

Jeff Kolde / John Knotts /

Chris Polizzi / John Tomanovich

August 26, 2013


Particulate Filtration

GORE® Filter Bags

GORE® Filter Cartridges

GORE® Liquid Filtration Products

Expanded PTFE (ePTFE)

Industrial Filtration

Airflow / DP / Cleanability

Durability / Longer life

Efficiency / Emissions / Product Collection



GORE® Filter Bags



Catalytic Filter BagsFilled ePTFE PM + Dioxin/Furan

???

PM + NOx




The Safest and Simplest Way to Destroy Dioxin


REMEDIATM Catalytic Filter System

Existing pulse-jet baghousesoperating at 180-250C

• Municipal Waste Incinerators

• Medical Waste Incinerators

• Industrial Waste Incinerators

• Crematoriums


Field Performance


NH3

NOx NOx

(NH3)

Gore® DeNOx Filter Technology


Gore® DeNOx Filter Technology

Combines the removal of Particulates and NOxApplied in Existing Pulse-Jet Baghouses



GORE® Filter Bags



SPC Technology

Catalytic Filter BagsFilled ePTFE PM + Dioxin/Furan

???

PM + NOx

Mercury Capture

SOx Removal

???




Fixed Sorbent Technology– Low pressure drop sorbent

modules placed directly in flue gas after baghouse or ESP

– Continuous mercury adsorption for long period of time without deactivation - no regeneration needed

– Does not require any injection of sorbents or chemicals

GORE™ Mercury Control System


Material Innovation at Gore• Sorbent Polymer Catalyst (SPC) composite

– Captures elemental and oxidized mercury

– High capacity for mercury capture

– Does not require regeneration

• Unique physical-chemical nature of the SPC material– Sulfur dioxide is converted into an aqueous sulfuric acid solution and expelled to

SPC material’s outer surfaces

– SO2 reduction is a co-benefit of this technology

SPC Material

H2SO4 formation from humidified SO2 gas feed


Sorbent Polymer Catalyst (SPC) Composite

GORE® Mercury Control Module

2’

2’

1’


h = Efficiency

Discrete Modules


Scalable Mercury Control

50

5560

6570

7580

8590

95

2 3 4 5 6Module Stack Height

Mer

cury

Rem

oval

(%)

5 f t/s10 ft/s15 ft/s

Gas Velocity


Module Design

~1/8th - 1/3rd inch H2O per module

Square Footprint+

Open Channels

Low Pressure Drop


Installation in Wet Scrubber

• “Zero-footprint” approach

• Lowest capital cost installation


Typical Cement Installation

Preferred Operating Temperature: <200°F


Applications

• Coal-fired Power Plants– In-scrubber installations– Un-scrubbed power plants– Preserves fly ash quality (no sorbent injection)

• Cement Plants– Post baghouse installation– Preserves CKD quality (no sorbent injection)

• Metals, incinerators, etc.


Pilot Testing Experience

• Minerals/Metals– 3 completed (4-12 months each)– 1 in progress, more under discussion

• Incinerators– 1 completed (4 months)– 1 in progress

• Coal-Fired Power– 3 completed (8-12 months each)– 1 in progress– 2 more under discussion


Pilot Testing at Cement Plants

1000 cfm slip-stream test skidInstalled at cement plant test site

Evaporative Cooler

Gas

Inle

t

Gas

Out

let

Control room Mercury control modulehousingModules


Data Acquisition / ControlsInlet + Outlet Tekran Hg CEMs


Daily Average Readings

-10

2030

405060

7080

90100

0 10 20 30 40 50 60 70 80 90

Days on Test

Total Hg Inlet (ug/Nm3)Total Hg Outlet (ug/Nm3)Hg Removal Efficiency (%)

Normal Plant Operation

Experimentation / Optimization

Pilot Test at U.S. Cement Plant


Variable Mercury Emissions – No AdjustmentsField Data from Cement Plant trial with Gore Mercury Control System (4-module stack height)


Xcel Sherburne County (Sherco)Becker, Minnesota

Full-Scale Installation

216 Gore Modules

Started operation July 2013


Sherco Module Arrangement


Xcel ShercoFull-Scale Installation


0%10%20%30%40%50%60%70%80%90%

100%

0.0% 1.0% 2.0% 3.0% 4.0% 5.0% 6.0% 7.0%Mercury Loading on SPC (wt%)

Mer

cury

Rem

oval

Effi

cien

cy (%

)

Measured removal on 6” SPC length scaled to 48” removal efficiency

2 million ton clinker/year plant needing 80% Hg reduction:

~2000 modules Projected capacity: ~2 tons Hg

Module Lifetime Projections


Status of Commercialization• High volume module

manufacturing lines starting up end of this year– Gore’s Elkton Maryland plants

• Multiple full-scale installations are planned for 2014– Commercial installations with

guarantees

• Strong partnerships in place in target industries


GORE™ Mercury Control System

SimpleNo adjustments

No sorbent injection

No CKD contamination

RobustCaptures elemental and oxidized mercury

Insensitive to common sorbent poisons (SO3, VOCs)

90+% mercury removal possible

Guaranteed mercury control

Cost-EffectiveLong module lifetime / low operating cost

Low pressure drop

Acid gas reduction co-benefit


Summary• Gore continues to focus research on new products

to address air pollution control challenges– Particulate collection

– Gas phase remediation

• New approach to mercury control– Attractive alternative to sorbent injection

• Field testing has demonstrated high efficiency and long module lifetime

• Commercial installations starting in 2014


Contact Information

• John Knotts– [email protected]– 610/937-1000

• Jeff Kolde – [email protected]– 410/506-7545

• John Tomanovich– [email protected]– 410/506-5581

Gas Remediation Technologies from W.L. Gore and Associates ...

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