3.3　Quality Requirement on Raw Coal

3.3.1　Coal for PCI shall be chosen according to the condition of local resources，and coal with low ash，small sulfur content and good grindability shall be chosen as injection coal.The quality of injection coal shall be in accordance with those specified in Table 3.3.1.

Table 3.3.1　Quality of injection coal

3.3.2　The thickness of coal plastic layer shall not be larger than 10mm.

3.3.3　Coal shall have the following characteristics:good combustion performance，low ignition temperature，strong reactiveness and high calorific value.

3.3.4　The size of the raw coal should not be larger than 40mm，and feeding moisture not larger than 12%.