Experimental Study on Pyrolysis Characteristics of Oily Sludge from Oil Production Plant on North China Oilfield

摘要

With the shortage of natural resources and the increase of solid waste discharges in the world, many countries take solid wastes as "resources" for comprehensive utilization. Oily sludge, as one of the solid wastes, contains a large amount of organic matter and harmful substances, which can be paralyzed and used. Samples were collected from the bottom of a sedimentation tank at sewage treatment field on North China Oilfield. Using a microcomputer differential thermal balance, oil pyrolysis experiments on 3oily sludge samples with different oil and water contents were carried out at different heating rates. The effects of heating rate, temperature and time on pyrolysis reactions were analyzed. The activation energy and frequency factors were calculated according to experimental data. Pyrolysis kinetic equations of these sludge samples were derived as well. Using a XRY-1A oxygen bomb calorimeter, the combustion calorific values of these sludge samples were obtained through calorimetric experiments.