“Measurement and Control of HCl” -- Hot Topic Hour on Thursday July 18

During the Hot Topic session yesterday the four speakers covered control and measurement of HCl to meet the new MATS rules.

Pat Mongoven, Business Development Manager – FGT at Mississippi Lime, presented results of several full-scale demonstrations to reduce HCl below the levels required by MATS.  Mississippi Lime used both its Flue Gas Treatment (FGT) grade hydrated lime and its new High Reactivity Hydrate (HR) grade hydrated lime in these evaluations.  The results with the HR grade were substantially better.  The advantages would be lower lime consumption and ancillary benefits such as fewer trucks. Also it may make it possible to reach the requirements using a precipitator.

Jarret McClendon, Applications Engineer at Natronx, reported that trona can reduce as much as 98 percent of HCl in the field. This technology has been used on both large coal-fired boilers and smaller industrial boilers. Contributors to this efficiency of removal are particle size, injection temperature, and milling of sorbent.

Dan Kietzer, Business Development Manager at Sick Maihak, Inc, discussed the various techniques for the continuous measurement of HCl and also the most recent updates on the new Performance Specification 18.  NDIR has been a traditional method for measuring HCl along with other contaminants. There may be as many as 3000 NDIR units in operation. TDL can be used in the in-situ mode to measure HCl in the 0-10 ppm range. There are not many units installed but it is promising and may gain market share

Michael Wood, Senior Business Manager at Solvay Chemicals, discussed the use of trona and sodium bicarbonate for HCl control, particularly in the presence of SO₂.  DSI systems can be optimized with regard to injection points, milling and sorbent selection. Solvay has considerable experience in Europe with waste-to-energy and industrial applications.

Jon Norman, Sales & Technology Manager for Dry Sorbent Injection at United Conveyor Corporation, was scheduled to present results of HCl removal tests using Dry Sorbent Injection (DSI) on both PRB and bituminous coals. Numerous tests have been conducted using hydrated lime, unmilled trona, milled trona, and sodium bicarbonate at different injection locations. There were some technical problems so he was unable to give his presentation live. However, we are making arrangements to record his presentation and send it to the subscribers. His power points are, however, linked below.

Bios, Abstracts and Photos can be seen at: BIOS, ABSTRACTS, PHOTOS - 7-18-13.htm

The individual presentations are as follows: 

• Measurement and Control of HCl - Webinar Recording - Hot Topic Hour July 18, 2013  (Webinar Recording  Dated:  7/18/2013)

§  UCC Dry Sorbent Injection HCl Removal by Jon Norman, United Conveyor - Hot Topic Hour July 18, 2013  (Presentation  Dated:  7/18/2013)

• SOLVAir Solutions by Michael Wood, Solvay Chemicals - Hot Topic Hour July 18, 2013  (Presentation  Dated:  7/18/2013)
• HCl CEM: "Best Practices" and Technology Overview by Dan Kietzer, SICK MAIHAK - Hot Topic Hour July 18, 2013  (Presentation  Dated:  7/18/2013)
• Acid Gas Removal with Trona Focus on HCl Reduction by Jarret McClendon, Natronx - Hot Topic Hour July 18, 2013  (Presentation  Dated:  7/18/2013)
• Hydrated Lime for HCl Mitigation by Pat Mongoven, Mississippi Lime - Hot Topic Hour July 18, 2013  (Presentation  Dated:  7/18/2013)