Effect of Vacuum Pumps on Production of Isovantrene

Effect of Vacuum Pump on the Production of Isoproterenol in Technical Innovation Park 1 Chen Qinglin, Luo Binglin (Liancheng Chemical Plant in Fujian Province, Fujian Liancheng 36 (5200) 1 Overview Isoprolene tricyclic sesquiterpenes, molecular formula G5H24, is The major raw materials for the production of synthetic fragrance isocarotone and isophyllyl carboxylate esters with woody aroma are used to produce semi-finished products from refined heavy oil in the chemical plant of Liancheng County, Fujian Province. More than 80% isoprene products.

2 transformation measures 2.1 before the transformation of the situation in the semi-finished product content in a certain case, the vacuum degree of the distillation process on the long-fonnene product yield and cost of the greatest impact, we use the H-1501 valve vacuum pump vacuum distillation, after many years of use found After this pump is used for a period of time, the degree of vacuum will drop, and it can only maintain -Q amount of 15kW/h, and it requires frequent maintenance oil change, resulting in poor separation of distillate components, affecting the yield. According to analysis, during the rectification process, a small amount of iso longifolene gas is sucked into the pump and directly contacted with the vacuum pump oil, resulting in miscibility, resulting in a drop in oil quality, affecting the vacuum degree. 2.2 Refining measures If a vacuum pump oil can be found The cannery isolated pump can solve this problem. After investigating and understanding, Shanghai JZJS-15 is selected (Roots water ring vacuum pump, different longifolene gas can be directly discharged out of the pump through the Roots water ring pump, not with the pump. The oil contact was also installed in August 1996. After commissioning, the system has a stable vacuum of -0.094 MPa. The power consumption is 10 kW/h. According to the production time of 200 d/a, only one electricity fee is charged, saving 200 years. (Table 1 before and after the transformation model vacuum degree (MPa) distillation time (h) power consumption rate (%) 3 Conclusion Vacuum pump fuel consumption, but also improve product yield, and achieved good economic benefits; the same time, H-15C vacuum pump noise Larger and thicker exhaust, with the JZJS-150 pump, reduced noise and exhaust pollution.

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