Design and fabrication of nickel-chromium reinforced 2-stage energy efficient pyrolysis reactor for waste plastics applications

Abstract

ABSTRACTThis paper focuses on the design and fabrication of a two-stage energy-efficient plastic waste reactor, which is capable of melting the various types of waste plastics such as HDPE, LDPE, PS, PVC, PET, PVC, PP, and in the melting temperature in the range of 400 οC to 1000 οC. The methodology involved in this experimental process is a superalloy with a nickel-chromium alloy percentage composition of 15CR85S for the reactor and 20CR80S for the furnace part. The plasma arc welding process is applied in the temperature range 10000 οC with a coating thickness of 75 microns over the materials, followed by 15CR85S-75μm YSZ. 20CR80S-75μm YSZ and 15NI85S-75 μm YSZ. The salt spraying technique is employed in this analysis. The potential benefits of this experimental process is that a reactor made up of 15CR85S-75μm YSZ gives promising results of lesser thermal expansion in the range of 10 K−1 × 10−6 for 15CR85S-75μm YSZ for uncoated 13K−1×10−6, Which 15CR85S-75μm YSZ material is 23% superior to uncoated materials. The crack porosity of 20CR80S-75μm YSZ is excellent in the order of 400 × 10−6, and for uncoated material, it is located in the order of 600 × 10−6. 20CR80S-75μm YSZ material is 50 % superior to uncoated materials.