Optimized Energy Production and Optimized Combustion

摘要

Automation offers a cost-effective means to improve the performance of the energy generation processes. Rising energy costs increase the pressure for cost savings in energy generation. Combustion optimization in fluidized bed boilers offers a possibility to utilize a larger proportion of very poor quality fuels. The coupling of grate combustion technology and combustion optimization can help to increase and stabilize production capacity.To ensure the minimum waste of steam, steam production should always match steam demand as closely as possible, which may be challenging with solid fuel fired boilers. Optimizing the steam generation together with utilization of power station internal energy reserves offers a cost-efficient way to minimize steam losses. At the same time utilization of lowest cost fuels can be ensured. Optimization of the steam network can also be combined with the optimization of electrical generation against a known or predicted electricity price.In this paper we present our experiences from two separate combustion optimization projects where we have drastically improved combustion of low quality fuels. One project was realized at the Stora Enso Anjalankoski mill in Finland and the other at the E.ON in Kemsley mill, UK. We then move to present our experiences in steam production optimization at other mills, including an implemented automatic generation control utilizing auxiliary cooling at the UPM Kuusankoski mill.