Study of Temperature and Use of Catalysts in the Pyrolysis of LDPE Plastic Waste on the Quantity of Oil Fuel Products Produced

Abstract

Low Density Poly Ethylene (LPDE) plastic waste has no sale value, buried in a landfill. The plastic itself cannot be broken down by microorganisms in the soil, so that people destroy it through incineration. Incineration plastics produce NOx, COx, SOx, particulates, dioxins, furans, and smoke, which can increase air pollution with acid rain and global warming. The purpose of this research is to solve this plastic waste so that it can be reprocessed into more valuable fuel through the pyrolysis process. The pyrolysis equipment used is a reactor unit made of stainless steel and equipped with an insulator made from rock wall. The primary tar reservoir is between the reactor outlet channel and the condenser inlet. The condenser unit is made of a steel shell and a spiral-shaped copper tube where the condensed product is a secondary tar product. The pyrolysis process produces 3 products, namely solid residue (char), liquid product (tar), and gas products. The number of products analyzed in this study only char and tar in the pyrolysis of LDPE plastic waste was analyzed based on temperature variations, namely 200°C, 250°C, and 300°C. The process in the reactor using natural zeolite catalysts. The results obtained are the highest quantity of char 10.80% and the primary tar 81.19% by processing in a reactor with a temperature of 200°C without the use of a catalyst, the secondary tar product 91.01% by processing in a reactor temperature of 300°C using a catalyst. The highest yield of fuel oil was 94.80%, and the lowest remaining solids residue was 5.2% in the reactor process using a catalyst with a temperature of 300°C for 6 hours.

Produksi Syngas melalui Crossdraft Gasifier ditinjau dari Variasi Temperatur dan Massa Jerami Padi sebagai Filter

“…Dalam adsorpsi gas, jumlah molekul yang teradsorpsi pada permukaan padatan tergantung pada kondisi dalam fasa gas. Hal ini disebabkan karena semakin banyak massa biomassa di filter maka meningkatnya kandungan gas CH4 dan H2, serta gas yang terserap CO2 dan CO menjadi berkurang volumenya karena merupakan gas yang jauh lebih berat dari gas lain yang ada pada syngas, sehingga akan tertahan di filter [18][19]. Penelitian terdahulu memperkuat bahwa semakin bertambahnya massa biomassa di filter maka akan menyebabkan terjadi peningkatan komposisi CH4 dan H2, serta menurun CO2 dan CO.…”

Characteristics of briquettes from plastic pyrolysis by-products

“…However, if there is overtemperature, oil production decreases, and gas production increases. On the other hand, the percentage of char and solids will be higher at lower reactor operating temperatures [24], [25]. In addition, the use of a catalyst affects the character of the type of compound used.…”