Ketone dewaxing equipment

Ketone dewaxing equipment

The main purpose of the Ketone dewaxing equipment is to remove high-condensing point components in the raw materials(mainly macromolecules n-alkanes and isoparaffins(wax))and reduce the condensation point of oil products to meet the requirements of various machinery at low temperatures.Requirements.

Acetone has very little solubility in waxes and oils,and is almost insoluble in waxes at 0°C or lower.Adding benzene can increase the solvent's ability to dissolve oil to ensure the yield of dewaxed oil.However,the crystallization temperature of benzene is relatively high,and adding toluene,which has a very low crystallization point,can lower the crystallization temperature of the mixed solution.Toluene's ability to dissolve wax is worse than benzene,its selectivity is stronger than benzene,and its boiling point is higher than benzene,making it more difficult to recover the solvent.Therefore,when the dewaxing temperature is not very low,a considerable amount of benzene should be maintained in the solvent.

process

1.Lubricating oil production steps:

Oil→ketone benzene dewaxing→clay supplementation and refining→residual oil deasphalting processing steps→lubricating oil base oil→lubricating oil blending→finished lubricating oil.

2.Details:

Solvent refining:The lubricating oil raw material distilled under reduced pressure only has a certain viscosity.To become a lubricating oil,it is necessary to remove the components with poor viscosity-temperature properties and poor antioxidant properties(mainly the removal of polycyclic short side chains).Heavy aromatics and colloids)are removed.

Clay refining:After the lubricating oil raw materials have been solvent refined and solvent dewaxed,trace amounts of solvent may remain in the oil,and there are also small amounts of colloids and non-hydrocarbon compounds in the oil.Most of these substances are polar substances.Their presence not only darkens the color of the oil and corrodes the machine,but also reduces the anti-oxidation stability of the oil,so they must be removed.

Residual oil deasphalting processing:After the oil is fractionated under vacuum,there are still some hydrocarbons with large molecular weight and high boiling point that cannot be vaporized and fractionated and remain in the vacuum residual oil.This part of hydrocarbons is a valuable raw material for producing high-viscosity lubricating oil.In addition to these high molecular weight hydrocarbons,residual oil also contains a large amount of colloids and asphaltenes.Therefore,in order to obtain this part of high-viscosity lubricating oil raw materials,they must be separated from colloids and asphaltenes.

The last step is the lubricating oil blending step.After the lubricating oil raw materials undergo solvent refining,solvent dewaxing and supplementary refining,the base oil is obtained.After these base oils are blended(mixed)evenly with certain additives,the finished lubricating oil is obtained.

Among them,the Ketone dewaxing equipment is one of the important devices for producing lubricating oil base oil.The device uses furfural refined oil as raw material,methyl ethyl ketone and toluene as solvents.Through cooling,crystallization,filtration,recycling and other processes,the production has better performance.Low-temperature fluidity dewaxed oil,and at the same time obtain paraffin as a by-product.