(42寸液晶電視價格)42寸液晶電視導購指南-展示頁
2025-01-23 19:59本頁面
【正文】 wastes from old TV sets in context of LCA Compositions of a TV Set (weight %)(Source: O. Murakami, Mitsubishi Elec. ADVANCE, pp. 69, 2023). Conventional Recycling System for TV setsProblem: How to recycle plastic wastes?Objective… to pare two different recycling options for plastic wastes from old TV sets in context of LCA.Option 1: Incineration of plastics for energy recovery (also known as thermal recycling)Option 2: Sorting plastics for mechanical recycling (also know as material recycling)1. LCA Methodology (ISO 14040)2. LCA of Plastic Wastes from Discarded TV Sets3. Concluding RemarksOutlineDefinition of products。Definition of system boundary。(2). Mechanical recycling, . c = 100 % and r = 67 %Lifecycle of plastics for TV setsData collection。Phase 2:(Source: Consoli ., 1993)Methodology: Life Cycle Assessment, (ISO 14040)The data of the processes, namely:were from the LCA database of the Japan Environmental Management Association for Industry (JEMAI). Phase 2 of LCA: Inventory analysisa) Data collection1. production of PS,2. production of PVC,3. production of PE,4. production of electricity,5. production of a TV set, Option 1: Incineration of 1 kg plastic materialEnergy generated:PS – 9,604 kcal/kg PVC – 4,300 kcal/kgPE – 11,140 kcal/kg Emission:2,640 g CO2 /kgSource: K. Krekeler et al., Kunstsoffe, 55/10, pp. 758, 1965Phase 2 of LCA: Inventory analysisa) Data collectionSource: Ministry of Environment of Japan, Guidelines, 2023PS 1050PE 960Plastics Density, [kg/m3]PVC 1400 1st Step2nd StepOption 2: Separation of plastic wastes prior to mechanical recyclingOption 2: Separation of plastic wastes(by bining triboelectric separation and air tabling)Energy: 0. 74 kWh/kgTriboelectric separator kWh/kgAir table kWh/kgSize reduction kWh/kgSieving kWh/kgRecovery of products: 67 % Grade of products: 95 %Phase 2 of LCA: Inventory analysisa) Data collectionSteps to be followed in theoretical calculation:1. Calculate the inverse of matrix of A (. A1)2. Calculate the inventory vector gPhase 2 of LCA: Inventory analysisb) Theoretical calculationsthe matrix A represents the flow of products and materialsg is the vector of the environmental interventionsthe matrix B represents the flow of environmental loadsthe vector f represents a special process where the functional unit is an output EvaluationPhase 3:(Source: Consoli ., 1993)
職業(yè)教育相關推薦
鄂ICP備17016276號-1