Voluntary Action Plan on the Environment
The Japanese cement industry has formulated a voluntary action plan on the environment in response to the call of Keidanren (the Japan Business Federation) (http://www.keidanren.or.jp/english/policy/pol058/index.html).
The goal of this plan was decided as a reduction of the average energy consumption for cement production over the period FY 2008-2012 by 3.8% compared to FY 1990.
Definition of “Energy consumption for cement production”
** The thermal energy by combustion of biomass and combustible waste is not included.
This rule is applied in all industry participated in the voluntary action plan on the environment of Keidanren.
Figure 7 shows the specific energy consumption for cement production. The average for FY 2008-2012 was 3428 MJ/t-cement, therefore the Japanese cement industry achieved its goal on the plan.
The energy consumption for cement production does not include the thermal energy by combustion of biomass and combustible waste.
The reason why this rule is applied is considered as follows.
When the combustible wastes are incinerated by incinerators without using generated thermal energy, the generated thermal energy is only emitted to the atmosphere.
On the other hand, if combustible wastes are used as alternative thermal energy in industries, the generated thermal energy is used effectively. This leads to the preservation of natural resources.
Cement industry uses effectively wastes as alternative thermal energy as same as other industries. In addition, cement industry is able to use the incombustible part of wastes as a part of raw materials. This becomes the good point of the use of combustible wastes in the cement industry.
Figure 7 The specific energy consumption for cement production