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Chemistry and the Environment - Labs
Lab #2 Part 1 - Oxygen Testing
Objective i. Understand the problems caused by oxygen in boiler feedwaterii. Perform a sulphite test for oxygen in boiler water
Equipment Sulphite test kit
What is your calculated sulphite content?__________________
Chemistry and the Environment - Labs
Sodium sulphite is a chemical used to consume oxygen present in a boiler. Any oxygen is “tied” to the sulphite. In order to ensure we have no oxygen in the boiler, we always must have an excess of sulphite.
1) How does oxygen enter the boiler?
2) Inspect the section of pipe that has oxygen corrosion. What do you observe? What is the failure look like?
3) Mechanical deaeration is another way that oxygen can be controlled in a boiler. Explain the general principles of a deaerator.
4) The flask was rinsed with the solution to be tested. Why rinse with the solution instead of tap water?
Chemistry and the Environment - Labs
Lab #2 Part 2 – Alkalinity Testing
Objective i. Perform a P-T Alkalinity Test on Boiler Water Equipment Alkalinity test kit
Boiler Water Sample
Calculate your P alkalinity _________________
Calculate your T alkalinity _________________