裂解集中投产下的国内石脑油供需

1. Report Industry Investment Rating - No relevant content provided. 2. Core Viewpoints of the Report - Since 2020, China's ethylene production capacity has been growing rapidly, with a compound growth rate of 14.3% from 2020 to 2024. From 2025 to 2027, there are plans to put into operation nearly 30 million tons of ethylene plants, which will drive up the demand for upstream raw materials such as naphtha [2][8]. - Due to the limitations of the growth of domestic crude oil primary processing capacity and naphtha circulation volume, the growth of naphtha demand is expected to be supplemented by imports [3][9]. - Short - process ethylene/PX plants that need to purchase naphtha externally are more vulnerable to production shocks and may become the marginal capacity affecting pricing [3][9]. 3. Summary by Directory 3.1 Preface - China's ethylene production capacity has been accelerating since 2020, with a five - year compound growth rate of 14.3% from 2020 to 2024. In 2024, the ethylene production capacity was 55.42 million tons, almost doubling compared to 2019. From 2025 to 2027, there are plans to put into operation nearly 30 million tons of ethylene plants. Naphtha cracking is the main process for ethylene production, accounting for 68% of the total ethylene production capacity by the end of 2024. The report aims to predict the growth of domestic naphtha demand by analyzing the existing ethylene/PX plants that need to purchase naphtha externally and the non - integrated ethylene plant construction plans from 2025 to 2027 [8]. 3.2 Existing Ethylene Plants Purchasing Naphtha Externally and Fewer PX Plants - There are about 14 ethylene plants using naphtha steam cracking in China without atmospheric and vacuum distillation capacity, with a total capacity of 10.24 million tons. These plants mainly use externally purchased naphtha as feedstock, and some also use light hydrocarbons. If fully operational, they would need to purchase more than 30 million tons of naphtha externally each year [11]. - There are relatively few PX plants purchasing naphtha externally, such as Qingdao Lidan and Fujia Dahua. This is because reforming units require heavy naphtha with higher aromatic potential requirements, while the market - circulated naphtha is mostly light naphtha [15]. 3.3 Intensive Commissioning of Steam Cracking Plants from 2025 to 2027, Potentially Further Increasing Naphtha Demand - From the end of 2024 to 2025, 14 steam cracking plants with a total capacity of 17.4 million tons are planned to be commissioned. Among them, 4 plants with a total capacity of 4.9 million tons need to purchase naphtha externally, with a theoretical external purchase demand of over 10 million tons [16]. - From 2025 to 2027 (including Q4 2024), about 31.69 million tons of ethylene cracking projects will be commissioned, mainly in 2025 - 2026. Some projects need to purchase naphtha externally. After the concentrated commissioning in 2025, several plants such as Fujian Zhongsha Petrochemical and CNOOC Shell (Phase III) will need to purchase naphtha externally from 2026 to 2028 [17]. - The growth of reforming capacity in the next few years is relatively small. About over 10 million tons of capacity will be gradually released from the end of 2024 to 2027, mostly as supporting facilities for new or expanded large - scale refineries [17]. 3.4 Limited Growth of Domestic Primary Processing Capacity, Requiring Import Supplements - Although new and改扩建 projects of refineries are expected to add over 100 million tons of atmospheric and vacuum distillation capacity, the actual growth of primary processing capacity is expected to be much lower, which may limit the increase in naphtha supply from atmospheric and vacuum distillation [23]. - According to relevant policies, by the end of 2025, the national crude oil primary processing capacity should be controlled within 1 billion tons. The elimination of old capacities may accompany the commissioning of new atmospheric and vacuum distillation capacities, restricting the increase in naphtha supply [23]. - The naphtha of domestic major refineries is mostly for self - use, with limited incremental tradable resources. The supply of naphtha from Shandong local refineries is expected to shrink, and the domestic supply gap of naphtha has been widening since 2022. The import volume is expected to further increase in 2025 [26]. - Globally, the supply of naphtha mainly comes from the Middle East, Russia, and the United States. From 2025 to 2027, the growth of naphtha supply may be relatively limited due to factors such as geopolitics and international sanctions [27]. 3.5 Early - Commissioned Plants Purchasing Naphtha Externally May Become Marginal Plants - If naphtha resources become scarce in the future, short - process ethylene/PX plants that need to purchase naphtha externally are more vulnerable to production shocks and may become the marginal capacity affecting pricing [32]. - Among the existing ethylene/PX plants purchasing naphtha externally in China, there are 3.89 million tons of ethylene plants and 1.7 million tons of PX plants commissioned before 2010. There are also many short - and medium - process plants in Japan and South Korea, and their profits may be more affected by naphtha price fluctuations [32].