There are several different technologies available for measuring the heating value in a flare stack including:
- Gas Chromatography
- Residual Oxygen
- Micro-Combustion Calorimeter
However it is important to make sure that the technology chosen has the following 5 characteristics:
- Direct Measurement - Directly measures the total heating value.
- Mounts at the Base of the Flare - This decreases the sample transport delivery time resulting in the fastest response time possible.
- Fully Heated Assembly - Keeping all sample wetted parts of the sampling system and analyzer at a high temperature will ensure that all combustible vapors are properly measured, eliminating inaccurate readings.
- Simple Flow System - An aspirator driven system is simple and effective, no pump or moving parts helps to avoid condensation and maintenance problems.
- Universal Response - Gives a uniform response to a wide range of combustible gases and vapors, including heavy hydrocarbons, carbon monoxide, hydrogen and numerous other compounds found in waste gas streams.
Measuring the heating value of a varying waste gas streams in a flare stack applications is rigorous, that’s why its important to have an analyzer that can withstand it AND be reliable.