Specific energy consumption of cement in Thailand

Abstract

According to the 2015 Thai Energy Conservation Plan, the government aims to reduce energy consumption by 37% in 2036 compared to the final energy consumption in 2010. The industry sector consumes about 35.7% of total energy consumption. Non-metallic sector accounts for 30.74% of the energy consumption of the industry sector. The cement industry is one of the non-metallic sector that consumes up to 60.69% of the energy consumption of the non-metallic sector. Specific energy consumption (SEC) and Baseline energy consumption (BEC) are used as a tool to assign energy conservation target for each industry sector. This paper presents BEC and SEC for cement production. There are 12 of 21 participating cement plants that provide relevant information to be used for BEC and SEC analysis. According to the analysis, the BEC and SEC of cement production does not depend only on the quantity produced, but also ambient temperature and humidity. Therefore, setting a typical BEC and/or SEC target for reducing energy consumption is not appropriate and unfair to the factory. The BEC and SEC equations are developed using statistical approaches. The cement productions are classified into 2 categories; clinker and cement. Regression equations are developed to determine the relationship between BEC/SEC and relevant variables, including BEC/SEC for electrical energy, thermal energy and total energy.