| 摘要 |
<p>PROBLEM TO BE SOLVED: To contribute to the recycling of waste plastic by removing chlorine from the waste plastic such as vinyl chloride with a simple process to produce plastic fuel, a blast furnace raw material or a calmative for making steel. SOLUTION: Hydrogen chloride generated by the pyrolysis of the vinyl chloride is fixed as a metallic salt such as calcium chloride, magnesium chloride by pulverizing the waste plastics, adding and mixing a metal oxide or a metallic carbonate such as calcium oxide, magnesium oxide, calcium carbonate, magnesium carbonate in a quantity equal to or above, preferably 10 times the equivalent of contained chlorine and melding at 180-350 deg.C. Generated hydrochloric acid is almost completely captured by the presence of the excess metal oxide, the metallic carbonate and the fear of the corrosion with hydrochloric acid in a succeeding process is eliminated and the waste gas is sufficiently treated with a simple system.</p> |
