Coal-to-olefin processes can also include CTO, MTO, MTP, etc

Coal-to-olefin processes can also include CTO, MTO, MTP, etc., and overseas development is earlier, but the focus of overseas olefin-making has shifted to oil head and gas head, so China gradually occupies the mainstream coal head process market share.

CTO mainly relies on China's rich coal resources to form the integration of raw coal to olefins and even downstream polyolefins and other products;

MTO, MTP, etc. focus on from methanol to olefins or downstream of olefins. The main product of MTO is ethylene propylene diene,while the main product of MTP is more propylene.Methanol in processes such as MTO and MTP can be extracted externally, but when the methanol price is high, the economics of external methanol extraction will be significantly weakened. 

Due to the energy structure of more coal, less oil and less gas in my country, there are many types of processes used in coal head devices in my country at present.