Test Method of Activity for Oxidizing Sulphuric Dioxide into Sulphuric Acid Catalyst
1 Scope
This standard specifies the test method of activity for oxidizing sulphuric dioxide into sulphuric acid catalyst.
This standard is applicable to the catalyst oxidizing sulphuric dioxide into sulphuric acid for oxidizing sulphuric dioxide to sulfur trioxide in the process of sulphuric acid production using the contact process.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 601 Chemical Reagent — Preparations of Reference Titration Solutions
GB/T 603 Chemical Reagent — Preparations of Reagent Solutions for Use in Test Methods
GB/T 6003.1 Test Sieves — Technical Requirements and Testing — Part 1: Test Sieves of Metal Wire Cloth
HG/T 2086 The Catalyst Oxidizing Sulphuric Dioxide into Sulphuric Acid
3 Principle
sulphuric dioxide and oxygen in the air can be oxidized to sulfuric acid with the catalyst oxidizing sulphuric dioxide into sulphuric acid. The volume fraction of sulphuric dioxide in the gas before and after the reaction can be determined by the absorption amount of iodine standard titration solution, and the conversion rate of sulphuric dioxide can be calculated to characterize the activity of catalyst. The chemical reaction equation is as follows:
Foreword I
1 Scope
2 Normative References
3 Principle
4 Test Apparatus
5 Sampling
6 Test Procedure
7 Calculation of Results
Annex A (Normative) Determination of Length of Isothermal Zone of Reactor
Annex B (Normative) Determination of Bulk Density of Catalyst Samples
Annex C (Informative) Flow Calibration of Rotameter
