Jinzhou Haorunda Chemical Additive Co., LTD.
Lubricating oil isomerization dewaxing process

Lubricating oil isomerization dewaxing process

With the increasingly strict environmental protection regulations and the development of the machinery industry (especially the automotive industry), higher requirements are put forward for the performance of lubricating oil. In order to produce these high-performance lubricants, especially for the preparation of large-span multistage internal combustion engine oils, it is necessary to use a base oil with low volatility and high viscosity index, that is, VI greater than 120 and saturation greater than 90%. APIⅢ base oil, which is mainly composed of iso-alkanes, has these characteristics and can meet the above requirements. Solvent dewaxing and catalytic dewaxing processes can not produce class III base oil, because these two processing methods can only remove the high viscosity index of N-alkanes from the oil, resulting in a low viscosity index of the base oil, but can not convert these high viscosity index of N-alkanes into high viscosity index, low pour point of isomeric alkanes, which not only makes the base oil yield low, And can not meet the specifications of high-quality base oil requirements. The basic principle of isomerization dewaxing is to isomerize high pour point normal alkane into low pour point branched alkane under the action of special molecular sieving catalyst. Isomerization dewaxing has become an important means to produce API Ⅲ base oil. Isodewaxing technology of Chevron and MSDW technology of Exxon Mobil are the main technologies of heterogeneous dewaxing of lubricating oil that have been realized in industrialization.

2023-06-26

Lubricating oil hydrogenation production technology

Lubricating oil hydrogenation production technology

The ideal components of base oil are branched alkanes (iso-alkanes) and monocyclic cycloalkanes with long alkyl side chains, while the non-ideal components are thick cyclic aromatic hydrocarbons and thick cyclic alkanes. Traditional solvent refining process is to selectively extract and remove polycyclic hydrocarbons and other heterocyclic compounds with low viscosity index (such as sulfur, nitrogen compounds, gum, etc.), so as to improve the viscosity index of the oil, so as to improve the color and antioxidant stability. This physical separation method can only retain the original ideal components of the raw material. The improvement of base oil yield, viscosity index and other properties was limited. The hydrotreatment of lubricating oil is through deep hydrogenation conversion method, so that polycyclic hydrocarbons become ideal components, and almost completely remove heterocyclic compounds, so the base oil yield is high, and the improvement of oil quality indexes is more obvious.

2023-06-26

Traditional production technology of base oil

Traditional production technology of base oil

In the 1930s, the production of lubricating oil base oil basically adopted physical methods, that is, the "old three sets" of traditional processes composed of solvent refining, solvent dewaxing and clay supplementary refining to produce lubricating oil base oil.

2023-06-26

Composition of lubricating oil

Composition of lubricating oil

Lubricating oil is generally composed of two parts: base oil and additive. Base oil is the main component of lubricating oil, determines the basic properties of lubricating oil, additives can make up for and improve the lack of performance of base oil, give some new properties, is an important part of lubricating oil.

2023-06-26

Classification of lubricating oil additives

Classification of lubricating oil additives

Cleaning dispersant: adsorbs oxidation products and disperses them in the oil. The planktonic component is resistant to oxidation, corrosion, combination and synthesis. The main products are: Low base synthetic calcium alkyl benzene sulfonate, high base linear alkyl benzene calcium sulfonate, long chain linear alkyl benzene high base synthetic calcium sulfonate, high base synthetic calcium dialkylbenzene sulfonate, long chain linear alkyl benzene high base synthetic magnesium sulfonate, high base alkylphenol sulfide, polyisobutylene succinimide, borated polyisobutylene succinimide, high molecular weight polyisobutylene succinimide, Borated high molecular weight polyisobutylsuccinimide.

2023-06-26

Use of lubricating oil additives

Use of lubricating oil additives

Lubricating oil additive refers to a mixture of several single agents that are mixed according to a certain proportion and blending technology and can meet the requirements of a certain quality grade.

2023-06-26

Antirust preservative mechanism

Antirust preservative mechanism

Rust inhibitor is a very polar compound, its polar groups have a strong adsorption force on the metal surface, forming a tight single molecule or multi-molecule protective layer on the metal surface, preventing the corrosive medium from contacting the metal, and playing a role in rust prevention. In addition, the base oil that dissolves the anti-rust agent can be adsorbed in the place where the anti-rust agent is less adsorbed, and it can be deeply adsorbed between the anti-rust additive molecules, with the help of the van der Waals force and the additive molecules, the adsorption film is more solid; In addition, due to the role of the base oil, the adsorption of the additive on the metal surface is more firm and not easy to break off, and the oil can also form a concentrate with the additive, so that the adsorption film is more compact. In short, these functions of the base oil are conducive to protecting adsorption molecules, maintaining the thickness of the oil film, and playing a certain role in rust prevention. The most commonly used corrosion prevention agents such as: barium sulfonate, calcium sulfonate, modified calcium sulfonate, borate amine, carboxylate amine.

2023-06-26

Mechanism of decoagulant

Mechanism of decoagulant

A depressant is a chemically synthesized polymer or condensate that generally contains polar groups (or aromatic nuclei) and alkyl chains similar in structure to paraffin hydrocarbons. Point depressant can not prevent paraffin from crystallizing out at low temperatures, that is, the turbidity point of the oil is unchanged, it is through the adsorption on the surface of the wax crystal or with the wax eutectic to change the shape and size of the wax crystal, prevent the wax from forming a three-dimensional network structure, so that it still maintains the flow ability of the oil at low temperatures. It should be emphasized that the coagulant can only take off and fall in the oil containing a small amount of wax, and the oil does not contain wax or contains too much wax. The most commonly used depressant is methyl dimethacrylate.

2023-06-26

Reasons for adding antioxidants and anti-oxidants

Reasons for adding antioxidants and anti-oxidants

Engines that use fuel oil, kerosene, gasoline, natural gas or man-made gases, liquefied gas, etc., must use lubricants (such as paraffin-based lubricants) to lubricate their moving parts. Lubricating oil in use to contact with the air, a variety of mechanical equipment will also produce heat, so that the temperature of the friction parts in operation, in addition, a variety of metal materials in the equipment, such as copper, iron, etc., will play a catalytic role in accelerating the oxidation and deterioration of oil, and ultimately the viscosity of lubricating oil increases, generating acidic substances to corrode metal materials. Various carbon or bituminous precipitated substances such as paint film will also be generated to block the pipeline. All these changes will adversely affect the continued use of oil products and the normal operation of equipment. Therefore, oil products are required to have better antioxidant and antiseptic properties. Antioxidant and anti-corrosion additives are added to the oil, the purpose of which is to inhibit the oxidation of the oil, blunt the catalytic effect of the metal on the oxidation, and prolong the use of the oil and protect the machine.

2023-06-26

The importance of purifying and dispersing additives

The importance of purifying and dispersing additives

The first is that the lubricating oil can suspend the insoluble matter such as glue and carbon generated after oxidation in the oil, forming a stable colloidal state and not easy to deposit on the parts;

2023-06-26

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Haorunda has provided services to more than 500 customers around the world, providing one-stop solutions for additives,meeting different customers’ requirements. The company will adhere to:lubrication with value principles,including continuing to strengthen R&D concept;focusing on customers’ challenges, mission must be reached,with final target to grow together with customers together.

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