甲醇技术（Methanol technology）.doc

甲醇技术（Methanol technology） Foreign methanol process technology At present, 92% of methanol is made from natural gas, and 2.3% of methanol is produced from coal. Therefore, methanol technology of foreign companies concentrates on methanol production from natural gas. Widely used by the international advanced methanol production technology mainly includes: DAV Y (I. C. I), O PSO E, U HDE, L u RGI methanol technology, less consumption and energy consumption of different methanol technology, is the main difference between the type of main equipment of methanol synthesis tower is different. 1.1 DAV Y methanol technology features The advantage of DAV Y low pressure methanol synthesis technology lies in its excellent low pressure methanol synthesis catalyst, the synthesis pressure is 5 ~ 10M Pa, and the synthesis pressure of large-scale methanol production unit is 8 ~ 10M Pa. The types of synthetic tower are: first, quench type synthesis tower, large capacity of single tower, and the concentration of methanol at outlet is about 4 ~ 6%vo L. Second kinds of internal heat transfer cold tube methanol synthesis tower. Recently, a water pipe type synthetic tower has been developed. Most distillation uses two towers, and sometimes also uses three column distillation, with the steam system settings unified consideration. Steam system: divided into high pressure 10. 5M Pa, medium pressure 2. 8M Pa, low voltage 0. 45M Pa three level. Converted waste heat and waste heat of reformer flue gas are used to produce superheated steam at 10. 5M Pa and 510 DEG C. High pressure superheated steam is used to drive the resultant pressure The steam turbine is drawn out and the medium pressure steam is withdrawn for use in the device. 1.2 L u RGI methanol technology The synthesis of L u RGI company has its own characteristics, that is, it has its own synthetic tower patent. Its characteristic is the synthesis tower is tubular and the by-product steam pipe is L u catalysts for RGI synthesis, is a tu