ABSTRACT：Since 1993, China has become a net importer of oil. The demand for oil imports has increased rapidly. In 2004, the domestic amount of crude oil imported into the country was 122,815,400 tons, 34.8% more than the import volume of last year. Net imports of refined oil products were 30.545 million tons, more than double the previous year, and net imports of crude oil and refined oil reached 14.789 million tons. Our country has now become the second largest oil importing country plus oil consumption country after the United States. In 2004, China produced 17.45 million tons of crude oil, and the total amount of oil consumed was 3,2226.9 tons, with an external dependency of 45.87%. Experts predict that by 2020, China’s foreign dependence will reach 60% to 62%. Therefore, we must make more in-depth use of coal, develop coal chemical technology, reduce dependence on oil imports, ensure the safety of China's oil, and ensure the sustainable development of the national economy. In order to cope with the severe oil supply situation, the country is studying various solutions and persified solutions to solve the oil problem. Coal liquefaction oil, coal to methanol, MTP technology to meet this need.

The construction of a large-scale MTP plant will help promote the development of China's modern coal chemical industry and optimize China's coal chemical industry structure. It will help implement the oil substitution strategy, ease the contradiction between oil supply and demand, and ensure national energy security; it will help ease the contradiction between supply and demand for ethylene and propylene in China and even the world; it will help optimize the structure of China's coal chemical industry and increase the competitiveness of China's coal chemical industry. In the present form, the use of methanol-to-propylene (MTP) technology that has been successfully developed and implemented in commercial plants has great economic benefits and strategic significance. In recent years, the consumption of propylene in the world has increased significantly. Although the growth rate of propylene production capacity is higher than the growth rate of demand, there is still a large gap in market supply and demand. In this context, this article summarizes the research progress of methanol to olefins, the classification and development of related catalysts, and the latest modification of catalysts.

This article describes the relevant reaction mechanism of methanol to olefins. And introduce the relevant industrial achievements of methanol to propylene reactor. In this paper, the reaction of methanol production equipment for propylene production, gas separation, compression drying, and separation and refining were simulated. Based on this, the process of methanol and propylene production process simulation was established. The whole process simulation provides support for the further development of the methanol-produced propylene process technology. Mainly designed: tower material balance, heat balance, tower calculation, calculation of auxiliary equipment, tower height calculation, tower diameter calculation, fluid mechanics calculation, load performance calculation. And draw the process flow chart with control points, equipment drawings, workshop production layout.

Design Standards: This design refers to the following national standards and regulations. Classification and Code of Dangerous Goods and Harmful Factors in Production Process (GB/T13816-1992), Classification Standard of Commonly Used Hazardous Chemicals (GB13690-1992), Typical Hazard of Chemical Medium in Pressure Vessels and Classification of Explosion Hazard Level (HGJ43-1991), Factory Fire Prevention Provisions (GBJ16-1987), Integrated Wastewater Discharge Regulations (GBJ8978), Steel Pressure Vessels (GB150), Shell-and-tube Heat Exchanger Standards (GB151), Process System Equipment Layout Design Provisions (HG20570), Chemical Installation Pipeline Layout Design Provisions (HG/T20549).

The principles of design principles and major design criteria are safety, operation, and installation. Safety: A large number of substances in chemical production are flammable, explosive or toxic. Therefore, the design must fully consider various obvious and potential dangers to ensure the health and safety of production personnel. Easy to operate: In determining the various production processes and equipment, but also a reasonable determination of operating conditions. Because it has a direct bearing on the establishment of the production process and equipment and the determination of its role and control program. Investment province: It requires the economical use of equipment investment, civil investment, public project investment and labor cost. Easy to install: The factory layout should meet the requirements for construction and installation operations. In particular, the hoisting of large-scale equipment should be considered. The pavement structure and load standards of the roads in the factory should meet the requirements for construction and installation.