Energy Stability and cogeneration for Cement Plant

by Pooja Late so cut

Cement is a product that is used globally and manufactured at different cement plants. The cement industry is uniting globally. The major and most noticeable market for cement is the building or construction industry, where there is a lot of application in combining water to produce concrete. Cement plant that produces these cements account for more than one third of the energy used in the world. The energy consumed from the direct process of CO₂ emission is up to 6.7 Gigatonnes (Gt), which is almost 25 per cent of the total emission from the world. The iron and steel sectors has 30 per cent of the emission, the cement industry or non-metallic industry covers about 27 percent while the chemicals and petrochemical production has about 16 percent. The manufacturing of cement by plants comprises of the heating, calcining and sintering of mixed and ground materials to form clicker.

This has made the manufacturing of cement to be the third biggest cause of the CO₂ emissions by man as a result of the production of lime, which is the primary material in cement. So, during cement production, energy saving have the tendency of lowing environmental impact. In the concrete and cement industry there has been move for the reduction of CO₂ and improvement in the efficiency of energy usage. And this can be finally resolved through the following process

· By the adjustment of the chemical in the composition of cement and;

· By changing the processes during the manufacturing and production of cement.

The second point can be improved through the change in energy management and also through the investment of new equipment or still by upgrading to the latest technology available. The adjustment in the chemical formulation of cement has been shown to reduce the emission of CO₂and also save energy, but they haven’t be adopted in most places and this has been hindered because setting up a totally new standard for the cement industry is complex and needs lot of time. Setting up a cement plant is capital intensive. Most of the prospect for the improvement of energy stability and the reduction of CO₂emissions can be derived when there is an improvement in the manufacturing process of cements. In the cement industry, the processing of the raw materials to form cement in a temperature above 800⁰C is known as Pyroprocessing and it is a very popular procedure used. This procedure give rise to the 74 per cent of the total consumption of energy in concrete/cement industries. The heat usage during this pyroprocessing is a little higher than 30 per cent. In spite of this, there is still a significant possibility for improvement in this area.

Grinding and milling amount to 5.8 per cent of concrete or cement energy consumption. These procedures have an energy productivity, which ranges from 6 to 25 per cent and also render a good chance for saving energy

Author’s Bio

Amar Kam in this post explain to his reader about the energy consumption as used in cement plants and how there are moves to ensure the efficiency in saving the energy consumptions as used by most cement plants.