In order to promote the optimization and upgrading of the industrial structure of the coking industry and standardize the market competition order, according to the requirements of relevant national laws and regulations and industrial policies, and in accordance with the principle of sustainable development of "total control, structural adjustment, energy saving (capital), environmental protection and rational distribution", these access conditions are formulated.

This access condition is applicable to conventional mechanical coke ovens, semi-coke (blue-carbon) coke ovens, existing heat recovery coke oven manufacturers and coking coal chemical by-product processing and production enterprises.

Conventional mechanical coke oven refers to the separation of carbonization chamber and combustion chamber. Coking coal is isolated from the air, and is indirectly heated and dry distilled into coke, and is equipped with production devices for gas purification and chemical product recovery. Coal loading methods are divided into top loading and tamping side loading.

Semi-coke (semi-coke) retorting furnace is a production device which mainly produces semi-coke (semi-coke) by using non-sticky coal, weak-sticky coal and long-flame coal as raw materials and performing medium-low temperature carbonization at the carbonization temperature below 750℃. Heating methods are divided into internal heating and external heating.

Heat recovery coke oven refers to a coking production device that operates under slight negative pressure in the coking chamber of coke oven, mechanically tamps, charges coal, discharges coke and recovers the residual heat of coking combustion. Mainly producing casting coke.