MERCURY MONITORING TOOLKIT

Sorbent Trap method is the most cost-effective and accurate method for mercury measurement in flue and process gases. The method has been widely used in power generation industry, cement production industry, metallurgy, waste incineration, etc.

The US EPA’s method 30B is a reference method for quantifying mercury emissions from stationary sources. The method uses charcoal traps to capture total mercury from stack gas or special sorbent traps, which provide mercury speciation measurement. Method 30B is a reference method for relative accuracy test audits (RATA) of vapor phase mercury Continuous Emission Monitoring systems (CEMs). Sorbent traps based US EPA’s Performance Specification 12B (PS 12B) is considered as Continuous Emission Monitoring procedure.

A method based on sorbent traps is considered by UN Environment Programme as one of the best available techniques/best environmental practices of monitoring of mercury emissions.

The US EPA’s Mercury Measurement Toolkit is designed for efficient and cost-effective on-site determination of total and speciated mercury emissions in accordance with method 30B.

The Toolkit is also used for the mercury determination in coal, fly and bottom ash, gypsum, waste water, effluents, and other media.

Mercury Monitoring Toolkit includes:

• sampling probe OLM30B;
• variety of sorbent traps: 30B, PS12B, CEN/TS 17286;
• analytical system based on direct Zeeman mercury analyzer RA-915M and PYRO-915+.

The OLM30B  is a dual train, fully functional sampling system, complete with Mass Flow Controllers, vacuum gauges, a WatLow controller with thermocouple input and probe power port.

 

Sorbent traps provide total mercury measurement as well as speciated mercury measurement (oxidized and elemental mercury phases). The flue gas sample is collected using a heated sample probe and calibrated pumping system. Mercury is captured by adsorption in sorbent traps media. The material in these traps is later analyzed using Zeeman mercury analyzer RA-915M and PYRO-915+ attachment.

Traps are specifically designed to comply with the US EPA Method 30B and PS-12B Performance specification.

TRAPS FOR METHOD 30B

Types

• Spiked Traps
• Un-spiked Traps
• Speciation Traps
• LEE Traps

APPLICATIONS

• RATA Sampling
• CEM Performance Testing
• Mercury Control Studies
• Baseline Flue Gas Characterization Studies

Advantage

• EPA Method 30B Compliant
• WATLOW Temperature Controllers
• Modular Design
• Ease of Operation
• Light weight and water resistant
• Full Length Probe Heating & Cooling allows for speciation sampling

Features

• Proprietary “Zero” Carbon eliminates background Mercury
• Halogen impregnated Carbon optimizes Mercury sorption while eliminating non-mercuric sorption
• Precise internal diameter reduces pressure drop and trap pluggage

Available Modifications

• Length: 185mm, 240mm, 450mm
• Spike Level: 10ng – 50,000ng
• Scrubber Sections: AGS
• Filter Beds: Dust Pre-Filter, Coil Pre-Filter
• Glass Type: Extra Durable, High Flow

TRAPS FOR PS-12B

Similar to 30B Traps, PS12B Mercury Sorbent Traps are specifically designed to comply with EPA Performance Specification-12B (PS-12B)

Types

• Compliance Traps
• RATA Traps

Features

• Proprietary “Zero” Carbon eliminates background Mercury
• Halogen impregnated Carbon optimizes Mercury sorption while eliminating non-mercuric sorption
• Precise internal diameter reduces pressure drop and trap pluggage

Available Modifications

• Length: 185mm, 240mm, 450mm
• Spike Level: 10ng – 50,000ng
• Sorbent Bed Length
• Scrubber Sections: AGS
• Filter Beds: Dust Pre-Filter, Coil Pre-Filter
• Glass Type: Extra Durable, High Flow

Analytical system

The analytical system consists of  RA-915M Mercury Analyzer with pyrolyzer PYRO-915+ (with large optical length of analytical cell and heated windows of the analytical cell) which is developed for unique direct mercury determination in any kind of solid and liquid samples. No sample pre-treatment is needed due to the use of thermal desorption and Zeeman correction that provide direct analysis with extremely low detection limit.