It can be stated that there are many WTE plants which have been constructed in the world since 1990׳s. In 1990, 394 trillion Btu of energy which was produced from MSW was consumed in USA. On the other hand, some of energy demand in Japan was provided from 102 waste incineration plants in the end of 1991. Also there were many WTE plants in Germany in the 90׳s. In United Kingdom, the 70th report by the Royal Commissions on Environmental Pollution emphasized the importance of modern technology in MSW plants [2] and [