Impactos do uso de resíduos no coprocessamento e análise das emissões de Co2 em uma indústria de cimento na região da Paraíba

Abstract

The cement industry is responsible for a huge impact in terms of greenhouse gas (GHG) emissions during its production process, being carbon dioxide responsible for almost all GHG emissions. Given this, it is urgent to search for techniques that reduce carbon dioxide emissions into the environment. The implementation of co-processing by the industry has enabled the use of alternative fuels. Therefore, the present work evaluates the impacts of using industrial waste in co-processing, in addition, it evaluates the amount of carbon dioxide avoided by using waste to replace petroleum coke commonly used as fuel in clinker furnaces. The evaluation was developed through two case studies, the first was to calculate the amount of CO2 that was emitted per ton of clinker without the use of co-processing, reaching the result of 288.4 kg CO2/t of clinker. In the second case study, the amount of CO2 that was emitted per ton of clinker was calculated with the introduction of the co-processing technique in the scientific industry, reaching the result of 257.8 kg CO2/t of clinker. Thus, the result was 30.6 kg of CO2 per ton of clinker, which was no longer released to the environment with the replacement of alternative fuels. Therefore, the work highlights the benefits of using the co-processing technique in the cement industry as one of the solutions for reducing carbon dioxide emissions into the environment, in addition, it allows for an environmentally appropriate destination for waste.