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The explosion characteristics of chlorine dioxide gas have been studied for the first time in a cylindrical exploder with a shell capacity of 201.The experimental results have indicated that the lower concentration limit for the explosive decomposition of chlorine dioxide gas is 9.5% ([ClO_2]/[air]),whereas there is no corresponding upper concentration limit.The maximum pressure of explosion relative to the initial pressure was measured as 0.024 MPa at 10% ClO_2 and 0.641 MPa at 90% ClO_2.The induction time (the time from the moment of sparking to explosion) at 10% ClO_2 was 2195 ms,but at 90% ClO_2 the induction time was just 8 ms. The explosion reaction mechanism of ClO_2 is of a degenerate chain-branching type involving the formation of a stable intermediate (Cl_2O_3),from which the chain branching occurs.
The explosion characteristics of chlorine dioxide gas have been studied for the first time in a cylindrical exploder with a shell capacity of 201.The experimental results have indicated that the lower concentration limit for the explosive decomposition of chlorine dioxide gas is 9.5% ([ClO 2] / [air]), there is no corresponding upper concentration limit. The maximum pressure of explosion relative to the initial pressure was measured as 0.024 MPa at 10% ClO 2 and 0.641 MPa at 90% ClO 2. The induction time (the time from the moment of sparking to explosion) at 10% ClO_2 was 2195 ms, but at 90% ClO_2 the induction time was just 8 ms. The explosion reaction mechanism of ClO 2 is of a degenerate chain-branching type involving the formation of a stable intermediate (Cl 2 O 3 ), from which the chain branching occurs.