What is a sulfur dioxide test chamber? How to test it

The sulphur dioxide test chamber can be used to assess the resistance of materials and their protective layers to corrosion by sulphur dioxide, as well as the comparison of process quality of similar protective layers. It can also be used to assess the resistance of certain products to corrosion by sulphur dioxide. If SO2 is further oxidized, sulfuric acid is usually formed in the presence of a catalyst such as nitrogen dioxide. This is one of the reasons for the concern about the environmental effects of using these fuels as energy sources. For the sulfur dioxide test, the equipment is filled with 2 liters of water inside a 300 liter tank volume, and the sample is placed on a sample holder in a special sulphur dioxide test chamber. After the sulfur dioxide test chamber is turned on, 2 liters of sulfur dioxide gas is introduced and heated at 40 ° C for 8 hours. The equipment automatically stops heating and begins to discharge waste. The exhaust gas is filtered through special materials and discharged to the outside. This is followed by a 16-hour exposure period, which is a cycle. The equipment sulphur dioxide inlet is metered out through the special sulphur dioxide metering tank, and then the gas is introduced into the tank for testing. The sulfur dioxide gas is decompressed by a dedicated pressure reducing valve for sulfur dioxide. After the gas delivery valve is opened, the gas is passed through a corrosion-resistant polytetrafluoroethylene tube into a special sulfur dioxide metering cylinder of the equipment to measure 300 liters / 2 liters of gas, and then the meter is measured by opening another valve. The gas input box is properly guided and evenly spread to test the product, and the operation is simple. The measurement range is corrected and the measurement is accurate.

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