Energy Value From Waste Paper Mill Screen Rejects, 1998 Environmental Conference Proceedings

E. Muratore

Energy Responsible

Centre Technique du Papier

The French Pulp and Paper Research Institute studied the quantities and characteristics of waste paper mill screen rejects and found that 175,000 dry metric tons per year were generated by the entire French waste paper industry. The main components were mixed plastics and non-pulpable fibres. Screen rejects incineration for thermal value has been demonstrated to be a reliable solution, based upon industrial pilot plant trials whose results are described. For example, rejects incineration in a 0.7 t/h rotating oven, followed by a steam boiler and emissions treatment showed that in normal operation, pollutant limits were not exceeded. Another experiment has been conducted with co-incineration of these wastes with municipal garbage in a 6 t/h oven. No problems have been encountered with 20 % screen waste in the oven feed. These experiments show that energy recovery from screen rejects can be a viable alternative to landfill.