关键词: 煤, 天然气, 工厂建设

Abstract: In recent years，the construction of coal-to-SNG plants is a hot focus in China，however，there is a lack of construction experience. Based on the experience on building coal-to-SNG plants，the thesis introduces 3 categories of coal-to-SNG plants：industrial users oriented，civilian users oriented，and general users oriented. The thesis briefly discusses two major contradictions on the supply chain from a coal mine to a coal-to-SNG plant to urban users：① the contradiction between the fact that coal chemical plants require safe and stable operation with full capacity，and the consumption imbalance of the urban users；and ② the inevitability of periodic shutdown of the plants and the required continuous supply of the SNG by consumers. The thesis indicates that the safe and stable supply of gas is the primary mission of the construction of coal-to-SNG plants，and the key problem is to solve or relieve the major contradictions of the supply chain. With the analysis of the elements that affect the supply chain，a new coal-to-SNG plant should be oriented definitely. Safe and stable supply of coal is the basis for the design and operation of coal-to-SNG plants. To adopt mature and reliable technology，localized equipment and multi-series facilities is conducive to the safe and stable operation of the plants and the fast elimination of failures. Design computerization and system integration should be introduced at the beginning of the general designing period. Safety and environment protection facilities and remaining materials management should not only satisfy present norms，but also take standard upgrade into consideration. In addition，it is very important to balance the relationships among stakeholders. With resources，market，environment，and policies under consideration，we should set up right principles for the construction of coal-to-SNG plants，further integrate and optimize plant-related factors，in order to avoid problems caused by blind and guideless construction.

Key words: coal, SNG, plant construction of plant