Blast furnace energy storage device

Can a blast furnace be used for internal energy recycling?

For this study, an exemplary blast furnace was selected with a slag production of 1770 t/d slag and respective specific annual heat loss of 1098 TJ/a. Depending on the yield of the heat recovery process, this heat potential could be interesting for internal energy recycling. Three possibilities are discussed later in this work.

What role does a blast furnace play in a steel plant?

The dominant role of the blast furnace in the process route is further brought out when viewed against the energy flows through the steel plant—wherein the off gas energy from the BF powers many of the steps in the value chain, as shown in Fig. 2

Is a blast furnace a promising innovation direction?

This field is also getting actively researched and should be considered promising innovation direction to support. The blast furnace process is particularly suitable to play a part in the energy transition of production of steel starting from iron ore.

Why should we focus on the blast furnace process?

Rationale for focusing on the blast furnace process: BF is the centre of energy use and hence the largest emission source in the steel value chain The world’s iron ore resources are characterized by association with non-Fe gangue materials (silica SiO 2, alumina Al 2 O 3).

What is a blast furnace slag (BFS)?

The application of the concept is further shown in the example of blast furnace slag (BFS). The concept (Fig. 2) comprises 5 parts: (1) slag tundish, (2) primary heat exchanger (PHE), (3) secondary heat exchanger (SHE), (4) tertiary heat exchanger (THE), and (5) quaternary heat exchanger (QHE).

How much slag does a blast furnace produce?

Waste heat per industrial sector and temperature level for EU in 2015 [ 20] For this study, an exemplary blast furnace was selected with a slag production of 1770 t/d slag and respective specific annual heat loss of 1098 TJ/a.