Method for lowering lubricating oil fraction pour point and turbidity point

A technology for lubricating oil and distillate oil, applied in the production field of lubricating base oil, can solve the problems of low liquid yield and poor activity, and achieve the effects of reducing pour point and cloud point, and improving activity and selectivity

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The selectivity of the catalyst has been improved, but the activity is poor and the liquid yield is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] In the preparation method of the catalyst, the introduction of the hydrogenation active metal component in a carrier containing ZSM-5 molecular sieve and matrix means that the effective amount of the hydrogenation active metal component is deposited Under the conditions on the carrier, the carrier is contacted with a solution containing the hydrogenation active metal component, such as by ion exchange, impregnation, co-precipitation and other methods, preferably impregnation. The impregnation method is a conventional impregnation method, through the adjustment and control of the concentration, dosage or carrier dosage of the compound solution containing the hydrogenation active metal component, the method of preparing a catalyst with a specified content of the hydrogenation active metal component is based on well known to those skilled in the art. When the impregnation is completed, it also includes the step of drying, roasting or not roasting, the conditions of the dry...

Embodiment 1

[0029] With 60 grams (dry basis weight) ZSM-5 molecular sieve (Changling Oil Refinery Catalyst Factory product, average grain size is about 80 nanometers, the mol ratio of silicon oxide and aluminum oxide is 32) and 189.2 grams of alumina powder (Changling Refinery catalyst factory products, dry basis 74% by weight) mixed, then extruded into cylindrical bars of Φ1.4 mm, wet bars were dried in air at 120°C for 4 hours, and roasted at 560°C for 4 hours to make catalyst carrier Z1.

[0030] Get 150 grams of carrier Z1, contact it with a mixed medium containing an aqueous solution of 1.0% by weight of tri-n-butylamine and air at 450°C for 8 hours, the ratio of the aqueous solution to the carrier is 1.0 g / g, and the ratio of the air to the carrier is 1.0 L / g·hour. The contact is carried out in a 150 ml reaction device, wherein the aqueous solution containing 1.0% by weight of tri-n-butylamine is introduced into the reactor by a metering pump; the air is compressed air, which is met...

Embodiment 2

[0033] With 150 grams (dry basis weight) ZSM-5 molecular sieve (Changling Oil Refinery Catalyst Factory product, average grain size is about 90 nanometers, the mol ratio of silicon oxide and aluminum oxide is 118) and 64.1 grams of alumina powder (Changling Refinery catalyst factory products, dry basis 70% by weight) mixed, then extruded into cylindrical bars of Φ1.4 mm, wet bars were dried in air at 120 ° for 4 hours, and roasted at 500 ° C for 6 hours to make catalyst carrier Z2.

[0034] Get 150 grams of carrier Z2, and contact it with a mixed medium containing an aqueous solution of 2.5% by weight of tetraethylammonium hydroxide and air at 480°C for 4 hours, the ratio of the aqueous solution to the carrier is 0.5 g / g·hour, and the ratio of the air to the carrier The ratio is 2.0 liters / gram·hour.

[0035] Get the carrier Z2 after 98.8 grams of treatment, with nickel nitrate [Wi(NO 3 ) 2 ·6H 2 O] 56 milliliters of aqueous solutions containing 1.2 grams of nickel oxide pr...

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Abstract

The method of lowering the pour point and cloud point of lube fraction oil includes contacting wax-containing lube fraction oil with catalytic dewaxing catalyst. The catalyst is prepared through introducing active hydrogenating component into carrier comprising ZSM-5 molecular sieve and matrix after the carrier is made to contact with mixed medium comprising organic amine aqua and air at 400-550 deg.c for 1-12 hr, where, the organic amine aqua contains organic amine in 0.1-5 wt%, the ratio between the aqua and the carrier is 0.1-5g/g.hr, and the ratio between air and the carrier is 0.5-5 l/g.hr. The method is especially suitable for producing lube fraction oil with low pour point and cloud point.

Description

technical field [0001] The invention relates to a production method of lubricating oil base oil, more specifically to a production method of lubricating oil base oil for the purpose of reducing the pour point and cloud point of lubricating oil distillate oil. Background technique [0002] Dewaxing is necessary to produce products with good fluidity at low temperature from waxy raw materials, such as lubricating oil, jet fuel, low freezing point diesel, etc. The wax mentioned therein refers to long-chain normal alkanes or long-chain hydrocarbon compounds with a small amount of short side chains, including long-chain alkanes with a small amount of short side chains, long-chain alkyl aromatics and long-chain alkyl cycloalkanes . The traditional dewaxing method uses the solvent dewaxing process, the main disadvantages of which are high operating costs, high energy consumption, and limited freezing point depression. Another dewaxing method is catalytic dewaxing, which uses the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/64C10G73/02C10G71/00
Inventor 黄卫国曾双亲王鲁强董维正康小洪夏国富聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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