การผลิตและสมบัติของเม็ดเชื้อเพลิงชีวมวลที่ผลิตจากการผสมขี้เลื่อยไม้ยางพาราและขยะฝังกลบ (RDF3) เพื่อใช้ในอุตสาหกรรมโรงไฟฟ้าในประเทศไทย

Abstract

The study of manufacture and properties of mixed pellets from rubberwood (Hevea brasiliensis) sawdust and refuse-derived fuel (RDF3) for using in the power plant industrial of Thailand was objected 1) to produce mixed pellets from a mixture of rubberwood sawdust and RDF3 at ratios of 100/0,70/30,60/40 and 50/50, 2) to study some properties of mixed pellets, and 3) to study the efficiency and economics of mixed pellets. This research was focused to produce fuel pellets from rubberwood sawdust and refuse-derived fuel (RDF) which is a by-product of municipal solid waste (MSW) using non adhesive. There are four conditions of ratio by weight of sawdust and RDF3 at 100/0 ,70/30, 60/40, and 50/50 respectively. The samples were analyzed for quantitative composition, proportion, and properties of biomass pellets, such as density, diameter, length, moisture content, ash content, fixed carbon, volatile matter, heating value, thermal efficiency, and chemical analysis. The results demonstrated the samples had 1,175 - 1,286 kg/m3 of density, ≥98% of mechanical durability, 36 - 42 mm of length, 6.122 - 6.188 mm of diameter, 5.38 - 11.27 % of moisture content, 12.484 – 15.78 % of fixed carbon, 65.17 - 72.11 % of ash content, and 19.40-22.09 MJ/kg of heating value. The value of heating value and ash content were diverse in the ratio of increasing RDF3. Thermal efficiency test using water boiling test (WBT) resulted that 50/50 mixed pellet of samples had highest value in 31.57%. Chemical analysis showed mixed pellets having RDF3 raised the content of Sulfur, Lead, Hydrogen, Sodium, Nitrogen, Chromium, Chlorine, Zinc, Copper, Cadmium, and Arsenic. On the other hand, Mercury had slightly same content. Finally, the economic analysis of mixed pellet production cost from rubberwood sawdust and RDF3 was 1.402 baht/kg.