Trial of application of a fixed-bed reactor for the assessment of the ignition initiation point of objects formed from coal wastes

In the work the results of investigations into the susceptibility to spontaneous ignition for the material collected from selected objects formed from coal wastes were presented. The investigations carried out from samples taken at the objects: "Waleska" - "Bolesław Śmiały" colliery, "Wrzosy" - "Rydułtowy-Anna" colliery, "Szyby Zachodnie" - "Jas-Mos" colliery, dump in the Bielszowicka street in Zabrze and "Ruda" dump in Zabrze-Biskupice, consisted in preheating of samples to the initial temperature, selected on the basis of performed preliminary tests, and next in the observation of its autonomous growth. Into the reactor the mixture of O2 and N2 has been introduced, the composition of which corresponded with the composition of air. In the outlet gases the content of CO, CO2, H2, and O2. was measured. The interpretation of obtained measurement results was presented and the conception of three-stage description of fire development at the object from coal wastes has been proposed. The investigations were carried out in the framework of the POIG 1.3 project entitled "Management system of liquidation of CO2 emissions from coal waste dumps".