Recovery And Utilization of Excess Heat In Steel Industry
Introduction
Heat is an important factor in the production of steel. It is needed to furnace steel and to temper, temper, temper and temper the steel after it has been produced. Heat is also essential in many other processes in the steel industry such as welding and forming. Most of this heat is supplied through the burning of natural gas, coal, or oil in either a furnace or an oven. This process, however, is very inefficient as much of the heat is wasted in the form of exhaust gases and heat. The recovery and utilization of this excess heat can help to improve energy efficiency and reduce energy costs in the steel industry.
Recovery of Excess Heat
The recovery and utilization of excess heat from a steel plant involves a few steps. The first is to capture the heat from the furnace, oven, or other process in the form of exhaust gas. The heated gas can then be collected in a waste heat boiler or exchanger, where it can be extracted from the exhaust as well as from other parts of the plant. The extracted heat can then be used directly as heat or converted into electrical energy using a heat engine.
Heat is also produced as a byproduct of other processes in the steel plant. For example, hot billets are cooled after they are rolled and quenched in the process of making steel flux. The heat produced in the process can be recycled by collecting the hot billets in an exchanger where the heat can be extracted and used either directly or converted into electrical energy.
Utilization of Excess Heat
Excess heat that is collected in a waste heat boiler or exchanger can be used in a number of ways. One way is through direct use of the heat such as heating of cylinder walls, oven crowns and other components of the steel plant. The heat can also be used to preheat water which is then used for various industrial processes. The heat can also be used to generate steam for industrial processes or power outages.
Heat that is collected and converted into electrical energy can also be put to a number of different uses in the steel industry. It can be used to power electrical motors, lighting, and other equipment. It can also be used to power the rolling mill and other central machinery.
Conclusion
Excess heat produced in the steel industry can be recovered and utilized. This can help to improve energy efficiency and reduce energy costs in the steel industry. Recovered heat can be used directly or converted into electrical energy for various industrial processes and equipment. The recovery and utilization of this excess heat can also help to reduce emissions from the steel plant, thus improving air quality.
