| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a load required for removal work of a caulking material adhering to the wall surface inside a pyrolysis furnace. <P>SOLUTION: A horizontal rotating drum composing the inside of a pyrolysis furnace heating and pyrolizing plastic-containing waste material to generate pyrolysis gas and residues is formed by a cylindrical stainless substrate 12b, and an overlay portion 28 is formed on the inner wall surface of the cylindrical substrate 12b by thermal spraying corrosion-resistant steel (B). Since the overlay portion 28 (a spray deposit) generates adequate swelling by the thermal spraying treatment, the wall surface is not smooth but has swelling, which facilitates generation of a space between the overlay portion 28 and the caulking material 26 due to shock by collision with furnace materials or a difference between their expansion coefficients. As a result, if the caulking material 26 is stripped from the wall surface during the operation of the furnace, removal work becomes unnecessary, and even if the caulking material 26 is not stripped, the generation of a space facilitates removal work. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
