Generation of sulfur trioxide and sulfuric acid
First Claim
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1. A method comprising:
- receiving a known concentration of sulfur dioxide gas;
receiving an oxidizing agent gas;
controlling the known concentration of sulfur dioxide gas and the oxidizing agent gas to be substantially free of water;
conveying the known concentration of sulfur dioxide gas and the oxidizing agent gas, which are substantially free of water, to a reaction chamber;
exposing the known concentration of sulfur dioxide gas and the oxidizing agent gas to a catalyst in the reaction chamber, the catalyst being heated, to react the known concentration of sulfur dioxide gas and the oxidizing agent gas into a known concentration of sulfur trioxide gas; and
maintaining the known concentration of sulfur trioxide gas in a gaseous state.
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Abstract
Configurations herein include a novel process and apparatus for generating and maintaining sulfur trioxide gas. The generation system and process operate to provide sulfur trioxide calibration gas for calibrating sulfur trioxide detection devices. The system and process provides a known, concentration of sulfur trioxide gas via a heated catalyst, which enables accurate calibration of measurement equipment. The system functions in part by controlling temperature, amount of moisture, residence time, catalyst selection, diluting generated sulfur trioxide and by locating the sulfur trioxide generator at a point of injection of a sulfur trioxide detection system.
18 Citations
23 Claims
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1. A method comprising:
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receiving a known concentration of sulfur dioxide gas; receiving an oxidizing agent gas; controlling the known concentration of sulfur dioxide gas and the oxidizing agent gas to be substantially free of water; conveying the known concentration of sulfur dioxide gas and the oxidizing agent gas, which are substantially free of water, to a reaction chamber; exposing the known concentration of sulfur dioxide gas and the oxidizing agent gas to a catalyst in the reaction chamber, the catalyst being heated, to react the known concentration of sulfur dioxide gas and the oxidizing agent gas into a known concentration of sulfur trioxide gas; and maintaining the known concentration of sulfur trioxide gas in a gaseous state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification