Something about the Cement Industry

• Raw materials blending

• Vertical mills for raw meal grinding

• Calciners and rotary kilns

• Vertical and ball mills for cement grinding

Energy Efficiency and CO2 Reduction

The cpmPlus Expert Optimizer is a generic platform for development of advanced process control solutions at ABB. It is primarily designed for closed-loop control, optimization, and scheduling of industrial processes, although it can also be used for open-loop decision support applications. When this platform is used, the solution of the problems described above can be attacked with techniques such as model predictive control (MPC) in its mixed logical dynamical (MLD) systems formulation that includes Boolean variables and logical constraints. For ease of use, the technology has been embedded in a graphical modeling toolkit that allows maximal flexibility during model and cost function design while hiding the mathematical complexity from the user.

 

The cement industry of the 21st century is confronted with disparate goals that at first glance seem to conflict. For example, there is enormous pressure to increase profit and margins, while at the same time there is considerable public interest in the sustainable and environmentally friendly use of natural resources. In other words, plant operators find themselves in a situation where they need to react fast and optimally to continuously changing conditions while still meeting various and probably conflicting objectives. Thus, there is a need for tools that bring the plants to their optimal economic performance allowed by the technological, environmental, and contractual constraints. From a technological standpoint, these tools are related to mathematical programming: optimization subject to constraints. The cpmPlus Expert Optimizer (EO) was developed to address these challenges, in particular for cement plants.

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