From: Jeff Thompson [mailto:Jeff.Thompson@cabotcorp.com] 

Sent: Friday, May 31, 2013 4:56 PM

To: Holloway, Thomas C. (Tom)

Subject: FW: Cabot Norit Activated Carbon - question

Tomas

Info below

jeff

From: David Herrera 

Sent: Friday, May 31, 2013 3:32 PM

To: Jeff Thompson

Subject: RE: Cabot Norit Activated Carbon - question

Jeff,

• For applications using baghouses, 0.5-3 lbs per MMacf is typical

• For applications using ESP, 1-5 lbs per MMacf is typical

• I believe our Porta-Pac systems have a 10:1 turndown ratio before needing to replace the auger, 

therefore you should have a broad range for injection rates. Our systems group would have to confirm. 

For economic modeling, I’d suggest 2 lbs/MMacf as a baseline but model on contingency for 1-5 

lbs/MMacf.

Regards,

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

David Herrera

Application Engineer

Cabot Norit Activated Carbon

T +1 903 935 4722

M +1 903 926 9637

F +1 903 938 0913

3200 University Avenue

Marshall, TX 75670

P.O. Box 790

Marshall, TX 75671

cabotcorp.com
From: Jeff Thompson 

Sent: Friday, May 31, 2013 10:22 AM

To: David Herrera

Subject: FW: Cabot Norit Activated Carbon - question

David

Did you have time to review the data for Tomas I sent 2 weeks ago.... 

Jeff T

From: Holloway, Thomas C. (Tom) [mailto:tcholloway@rti.org] 

Sent: Friday, May 31, 2013 11:21 AM

To: Jeff Thompson

Subject: RE: Cabot Norit Activated Carbon - question

Hi Jeff,

Following up our May 16 phone call, I was wondering if you have had a chance to forward the 

information I sent you about brick kiln parameters and emissions to your engineer David to evaluate the 

feasibility and cost of using activated carbon injection to control mercury emissions from kilns at brick 

manufacturing plants. (The brick kiln parameter and emissions data are listed below in your April 29 

email.)

We are also interested in the feasibility and cost of using activated carbon injection to control 

dioxin/furan (D/F) emissions from kilns at ceramic tile plants (which make floor/wall tile) and 

sanitaryware plants (which make sinks, toilets), which have the following average parameters and 

emissions (at 7% oxygen):

Ceramic tile

Total D/F = 77 ng/dscm

D/F TEQ = 1.4 ng/dscm

Actual flow = 30,300 acfm

Standard flow = 20,200 dscfm

Firing temperature = 1800 to 2300 degrees F

Stack temperature = 300 degrees F

Sanitaryware

Total D/F = 331 ng/dscm

D/F TEQ = 2.1 ng/dscm

Actual flow = 13,100 acfm

Standard flow = 8,500 dscfm

Firing temperature = 2200 to 2400 degrees F

Stack temperature = 325 degrees F
Let me know if you need any additional information. Thanks for your help. I really appreciate it.

Tom

Thomas C. Holloway

RTI International

3040 Cornwallis Rd., P.O. Box 12194

Research Triangle Park, NC 27709

Phone: (919) 316-3733

Fax: (919) 541-7155

E-mail: tcholloway@rti.org

From: Holloway, Thomas C. (Tom) 

Sent: Thursday, May 16, 2013 11:09 AM

To: 'Jeff Thompson'

Subject: RE: Cabot Norit Activated Carbon - question

Hi,

I wanted to follow up on my inquiry regarding the feasibility of using activated carbon injection to 

reduce mercury emissions from (continuous) tunnel kilns used in the brick manufacturing industry. I also 

wanted to ask whether you have any estimates of cost and performance for such systems, given the 

parameters provided in the question form below. In addition to mercury, we are also interested in 

dioxin/furan control. Let me know if you need any additional information. Any assistance you could 

provide would be greatly appreciated. Thank you.

Tom

Thomas C. Holloway

RTI International

3040 Cornwallis Rd., P.O. Box 12194

Research Triangle Park, NC 27709

Phone: (919) 316-3733

Fax: (919) 541-7155

E-mail: tcholloway@rti.org

From: Jeff Thompson [mailto:Jeff.Thompson@cabotcorp.com] 

Sent: Monday, April 29, 2013 8:41 PM

To: Holloway, Thomas C. (Tom)

Subject: Cabot Norit Activated Carbon - question

Tomas,

I received your inquiry and will review... we do provide a powdered activated carbon to control and 

reduce mercury in a flue gas application
Jeff Thompson

Regional Sales Manager-southeast

Cabot Norit Activated Carbon

Ask a Question Form

Name: Thomas Holloway

Email Address: tcholloway@rti.org

Company: RTI international

Phone: 919-316-3733

Industry: Flue Gas Treatment

Country: United States

Address: 3040 cornwallis road, p.o. box 12194

Postal Code: 27709-12194

City: research triangle park

State/Province: nc

Comments: Hi, I work for RTI International, and we are providing technical support to the U.S. 

Environmental Protection Agency to develop new hazardous air pollutant regulations for the brick 

manufacturing industry. I have a question I was hoping you could help me answer, specifically whether it 

is feasible to use activated carbon to control mercury emissions from kilns at brick manufacturing plants, 

given the following parameters: - Range of mercury concentrations from 0.5 to 29 micrograms per dry 

standard cubic meter (average of 8 ug/dscm) - Range of air flows from 15,200 to 108,500 actual cubic 

feet per minute (average of 38,200 acfm) and 9,400 to 62,700 dry standard cubic feet per minute 

(average of 23,600 dscfm) - Range of temperatures from 114 to 400 degrees Fahrenheit (average of 321 

degrees F) Any assistance you can provide would be helpful. Thanks, Tom Holloway

Jeff Thompson

Regional Sales Manager

Southeast Region

Cabot Norit Activated Carbon

e-mail: jeff.thompson@cabotcorp.com

Cell-770-312-2800

I-www.cabotcorp.com