Lubricant base oil heterogeneous dewaxing (MSDW™)

However, the raw materials for the production of lubricating base oils generally contain a lot of high molecular weight n-alkane molecules, that is, the high content of paraffin, which directly leads to the high freezing point of the lubricating base oil and poor low-temperature fluidity. Therefore, it is necessary to drastically remove the long linear alkanes contained in the raw materials, that is, paraffin wax. ExxonMobil MSDW selective heterogeneous dewaxing "knife method" can now show its talents. Refineries can rely on MSDW catalysts and process technology to improve the low-temperature flow properties of base oils, and convert paraffin wax into high-viscosity base oil molecules.

cut "wax" like mud

The core of MSDW technology is a proprietary precious metal molecular sieve shape selective catalyst. Specially designed, it can be used for normal paraffin isomerization (ie "dewaxing") and aromatic saturation, helping manufacturers to produce as many lubricant base oil molecules as possible, while effectively reducing the cracking of long-chain molecules into fuel oil molecules reaction.

Easy

MSDW technology can handle a very wide range of raw materials: from vacuum gas oil (VGO) hydrotreating or hydrocracking tail oil (UCO), solvent deasphalted oil (DAO) to hydrotreating raffinate and crude wax, Can do it with ease. In addition, mature and efficient MSDW catalysts can bring higher productivity to some existing base oil installations and maximize profitability.

Outstanding combat

The catalyst used in 　　MSDW technology not only has excellent activity and long service life, but also has high tolerance to nitrogen, sulfur and aromatics pollutants in the raw materials. For other similar catalysts, the deterioration of the quality of raw materials that may have caused poisoning and deactivation, we only need to temporarily increase the operating temperature to deal with it, and it has little effect on the aging rate of the catalyst, but has almost no effect on the product yield.

Lube base oil hydrofining (MAXSAT™)

Another important characteristic of lubricating oil is oxidation stability. Excellent oxidation stability can prolong the service life of lubricants and better control the formation of deposits. The appearance and color of oils can often reflect their refinement and stability. Applying MSDW heterogeneous dewaxing technology, combined with ExxonMobil MAXSAT hydrofining catalyst, can obtain base oils with outstanding color and stability.

"Fine is more refined"

MAXSAT is an advanced, precious metal-containing hydrorefining catalyst using a proprietary carrier, which can be perfectly combined with lubricating oil or fuel hydrocracking unit, or used as a hydrorefining step of hydrodewaxing technology. Its outstanding performance can improve the chroma, oxidation stability and thermal stability of the base oil.

MAXSAT removes polycyclic aromatic hydrocarbons (PNA) and trace olefins. The PNA balance is controlled by the reaction temperature and pressure. Even with the right amount of polarity, MAXSAT is still very effective in terms of aromatic saturation.

The Way to Win

Compared with existing hydrorefining catalysts, MAXSAT has stronger polarity tolerance and higher cost benefits. It can not only achieve shorter project start-up time and faster investment recovery, but also stable operation And a longer life cycle to maximize value as much as possible.

Wisdom and bravery can only become a true hero. After passing the training and nirvana of the two core training levels of MSDW and MAXSAT, the raw materials of all kinds of materials successfully faded and extracted the essence, and embarked on the heroic road of high-quality lubricant base oil.