White Paper

Trace HCL Measurements In Coal-Fired Power Plant Emissions Using Cavity Enhanced Laser Absorption Spectroscopy

Trace HCL Measurements In Coal-Fired Power Plant Emissions  Using Cavity Enhanced Laser Absorption Spectroscopy

BySteve Gibbons, ABB and Jean Berthold, LGR

Regulations recently promulgated by the Environmental Protection Agency (EPA) require qualifying power and cement plants to monitor and control hydrogen chloride (HCl) emissions. These regulations call for HCl concentrations to be below 1 ppm for power plants and 3 ppm for cement plants.

A few key factors can make these measurements challenging. HCl is highly soluble in water and suffers from adsorption and desorption effects with certain materials like PTFE, which is often used in sample tubing. Additionally, reactions with ammonia in the flue gas can form several salts. In the case of an extractive sampling system, if the temperature of the sample drops below the sublimation point of these salts, build-up occurs. Salt build-up on sample tubing can interfere with the measurement of HCl and other flue gas components.

VIEW THE WHITE PAPER!
Signing up provides unlimited access to:
Signing up provides unlimited access to:
  • Trend and Leadership Articles
  • Case Studies
  • Extensive Product Database
  • Premium Content
HELLO. PLEASE LOG IN. X

Not yet a member of Pollution Online? Register today.

ACCOUNT SIGN UP X
Please fill in your account details
Login Information
I'm interested in newsletter subscriptions.
ACCOUNT SIGN UP

Subscriptions

Sign up for the newsletter that brings you the industry's latest news, technologies, trends and products.

You might also want to: