manufacturing method of lubricating oil and viscosity index (index of the Production viscosity Iubricants)

摘要

low oil content of the petroleum wax supply of raw materials can be decomposed in the two - stage - to the isomerization method and viscosity index lubricating oil into the way, just as in the supply of materials, and the conditions of the first decomposition stage can be a general the 30 or 40 weight% of the supply of the lubricating oil of the raw material into the resultant. the first step is to open the 800 psig (5617 PkPaa) above the supply of raw material in hydrogen pressure in the presence of the aromatic components is amorphous catalyst under the presence of the organism. the second step is to take the first step of the resultant from the second stage to direct investment or low voltage, representative of psig (200 or 1000 or 6996 1480 PkPaa) can perform.the second stage also welcomed to precious metal containing zeolite beta catalyst. the second stage is relatively low temperature of 600 degrees f to be 650 (316 or 343 degrees) in the temperature of operation. the floating point to the dewaxing stage can be used.