Energy potentiality of crop straw resources in China

The crops straw is the latent and huge energy reservation because it contains abundant organic matter,measuring its quantity accurately is the precondition of crops straw comprehensive utilization.With the crops straw in 2005 as the example,the quantity of crops straw resource and its energy potentiality in 2005 in China was analyzed,which can provide the reference for crops straw comprehensive utilization.The results showed that approximate 399.5 million tons of crops straw are available to be used as energy every year.If all of these straw are used in different transformed way such as direct burning,boiler burning,pellet and briquette burning,methane heating,methane electricity generation,gasification heating,gasification for power and so on,the energy products may replace the fossil fuel of 29.1,50,203.9,81.5,25.8,221.7 and 59.8 million tons re- spectively.And among them,the highest efficiency is derived from gasification heating application, which energy transformation efficiency is 60.37%,and the next is pellet and briquette burning, which energy transformation efficiency is 50.28%.The crops straw resource has a huge potentiality with the applications of gasification heating and pellet and briquette burning.