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US 11,598,523 B2Granted
Flare monitoring and control method and apparatus
AssigneeChevron Phillips Chemical Company LP
InventorsCharles F. Fisher, Lee N. Green, Gregory G. Hendrickson, Thomas A. Lessard, Kenneth B. Moore, Daniel W. Peneguy
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Abstract
Disclosed herein are embodiments of a flare control method and a flare apparatus for automatically controlling, in real-time, the flow of one or more of fuel, steam, and air to a flare. The disclosed embodiments advantageously allow for automated control over a wide spectrum of operating conditions, including emergency operations, and planned operations such as startup and shutdown.
Claims20
A flare apparatus comprising:
- a flare having a combustion zone;
- a vent gas stream connected to the flare and configured to feed a vent gas to the flare upstream of the combustion zone;
- an air stream or a steam stream configured to feed air or steam to the flare;
- an online tunable infrared absorption based gas analyzer configured to analyze the vent gas in a sample stream taken from the vent gas stream or configured to analyze the vent gas in a flow path of the vent gas in the vent gas stream upstream of the combustion zone, wherein the gas analyzer is configured to measure a concentration of at least one hydrocarbon of the vent gas in the vent gas stream;
- and
- a flare control system coupled with the gas analyzer and configured to control, in real-time based at least in part on the concentration of the at least one hydrocarbon, a flow of steam or air to the flare.
3 more elements
Dependencies are inferred from the claim text.