Exothermic Runaway Decomposition Causes Ethylene Explosion (229)

During the polymerization of ethylene in a 750 liters pressurized reactor, an exothermic runaway decomposition occurred and ethylene and its decomposition products were released through the two reactor vent stacks and via the dump valves on the supply lines. The released gas (cloud) was ignited apparently by the hot carbon particles obtained by the decomposition of the ethylene and an aerial explosion occurred. The following substances were involved in the accident: Ethylene (60 kg). Ethylene (together with the decomposition products about 60 kg).
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This material was prepared as an account of work sponsored by an agency of the United States Government.
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