Determination of total nitrogen in petroleum ointment drastic hydrogen denitrifying process;

In the laboratory facility, the microcrystalline wax was prepared using slack wax as feed and MIBK as single solvent for deoiling in the slack wax recrystallization, multi-point dilution and two-stage deloil-ing process .

A suggestion is made for the production of high melting-point wax with Daqing mixing paraffin jelly based on practical situation, the possibility is analyzed and the process conditions of the paraffin jelly processing are defined.