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Análise de recuperação de energia de escória de siderurgia
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O aumento da população mundial tem provocado uma procura crescente por energia, a qual
para ser suprida, acarreta como consequência enormes custos económicos e ambientais. A energia
por constituir um bem escasso, por vezes difícil de produzir, armazenar e utilizar quando é necessário,
tem-se tornado uma questão relevante no cenário económico mundial. Os processos mais comuns e
antigos que os países e sociedades tem utilizado são poluidores, provocam acumulação de gases com
efeito de estufa na nossa atmosfera e em consequência provocam degradação do nosso meio
ambiente.
Neste contexto, a produção do aço é uma das grandes indústrias consumidoras de energia do
planeta, constituindo-se também em uma das mais poluidoras, sendo a escória um resíduo sobrante
desse processo de produção do aço.
O objetivo deste trabalho é minimizar o efeito para o meio ambiente da produção do aço
focando a nossa atenção na escória, um produto pouco nobre que resulta da produção do aço. A
escória produz-se a altas temperaturas e, após a sua transformação, a energia é dissipada para o
ambiente. Tendo em conta que não se está a aproveitar o calor da mesma, seria vantajoso usá-lo para
outros fins.
Assim sendo, este estudo foi realizado com o intuito de elaborar um procedimento que
possibilite aproveitar a energia da escória. Desta forma, apresentam -se alguns métodos de recuperação
do calor das escórias após a solidificação, os quais são realizados com água ou ar.
Neste relatório apresenta-se um processo de recuperação do calor por contacto entre o ar e a
escória, para que numa fase posterior seja possível transferir esse calor para a água.
The increase in the world population has caused an increasing demand for energy, which, in order to be supplied, brings with it enormous economic and environmental costs. Energy, as it is a scarce good, sometimes difficult to produce, store and use when necessary, has become a relevant issue on the global economic scene. The most common and oldest processes that countries and societies have used are polluting, causing the accumulation of greenhouse gases in our atmosphere and consequently causing degradation of our environment. In this context, steel production is one of the largest energy-consuming industries on the planet, and is also one of the most polluting, with slag being a residue left over from this steel production process. The objective of this work is to minimize the effect on the environment of steel production by focusing our attention on slag, a not very noble product that results from steel production. Slag is produced at high temperatures and after its transformation the energy is dissipated into the environment. Taking into account that you are not taking advantage of its heat, it would be advantageous to use it for other purposes. Therefore, this study was carried out with the aim of developing a procedure that makes it possible to harness the energy of slag. Therefore, some methods of recovering heat from solidified slag after cooling are presented, which are carried out with water or air. This report presents a heat recovery process through contact between air and molten slag, so that at a later stage it is possible to transfer this heat to water.
The increase in the world population has caused an increasing demand for energy, which, in order to be supplied, brings with it enormous economic and environmental costs. Energy, as it is a scarce good, sometimes difficult to produce, store and use when necessary, has become a relevant issue on the global economic scene. The most common and oldest processes that countries and societies have used are polluting, causing the accumulation of greenhouse gases in our atmosphere and consequently causing degradation of our environment. In this context, steel production is one of the largest energy-consuming industries on the planet, and is also one of the most polluting, with slag being a residue left over from this steel production process. The objective of this work is to minimize the effect on the environment of steel production by focusing our attention on slag, a not very noble product that results from steel production. Slag is produced at high temperatures and after its transformation the energy is dissipated into the environment. Taking into account that you are not taking advantage of its heat, it would be advantageous to use it for other purposes. Therefore, this study was carried out with the aim of developing a procedure that makes it possible to harness the energy of slag. Therefore, some methods of recovering heat from solidified slag after cooling are presented, which are carried out with water or air. This report presents a heat recovery process through contact between air and molten slag, so that at a later stage it is possible to transfer this heat to water.