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Method for producing base oil by isodewaxing

A technology of isomeric dewaxing and base oil, which is applied in chemical instruments and methods, base materials, petroleum industry, etc., can solve the problem of not fully considering the influence of comprehensive reaction performance, and achieve the improvement of overall reaction performance, improvement of reaction performance, Control the effect of coking

Active Publication Date: 2014-12-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, most of these lubricating base oil production technologies use the same active catalyst for isomerization reaction, and do not fully consider the impact of material property changes in different reaction areas on the comprehensive reaction performance of the entire reaction system under the reaction state.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of embodiment 1 catalyst C-1

[0032] Take 100 grams of NaZSM-22 molecular sieve, exchange it with 500 grams of 10% ammonium nitrate solution at 80° C. for 4 hours, then repeat the above exchange once to obtain HZSM-22 molecular sieve.

[0033] Get 65 grams of the above-mentioned HZSM-22 molecular sieves, 28 grams of pseudo-boehmite (72% on a dry basis), 21 grams of SB powder (72% on a dry basis), 2 grams of kale powder, mix well, then add 30ml of deionized water and 2.5ml of concentrated nitric acid (66.5w%) is fully mixed and kneaded on a roller compactor to make it a paste-like plastic, extruded into a cylindrical strip with a diameter of 1.5mm on the extruder, dried at 110°C for 8 hours, and then dried at 550°C in an air atmosphere Calcined for 4 hours to obtain carrier D-1.

[0034] Take carrier D-1, use Pt(NH 4 ) 4 Cl 2 The solution was saturated impregnated, then dried at 110°C for 6 hours, and calcined at 500°C for 4 hours in an air atmospher...

Embodiment 2

[0035] The preparation of embodiment 2 catalyst C-2

[0036] Get 100 grams of NaZSM-22 molecular sieves, use 500 grams of concentration to exchange 10% ammonium nitrate solution at 80°C for 4 hours, then repeat the above exchange once; / L tartaric acid mixed solution was treated at 90°C for 4 hours to obtain the final dealuminated HZSM-22 molecular sieve.

[0037] Get 65 grams of the above-mentioned dealuminated HZSM-22 molecular sieves, 28 grams of pseudoboehmite (72% on a dry basis), 21 grams of SB powder (72% on a dry basis), 2 grams of squid powder, mix well, then add 30ml to remove Ionized water and 2.5ml concentrated nitric acid (66.5w%) are fully mixed and kneaded on a roller compactor to make it a paste-like plastic, extrude a cylindrical strip with a diameter of 1.5mm on the extruder, dry at 110°C for 8 hours, and then dry it in an air atmosphere Calcined at 550°C for 4 hours to obtain carrier D-2.

[0038] Take carrier D-2, use Pt(NH 4 ) 4 Cl 2 The solution was ...

Embodiment 3

[0039] The preparation of embodiment 3 catalyst C-3

[0040] Get 100 grams of NaZSM-22 molecular sieves, use 500 grams of concentration to exchange 10% ammonium nitrate solution at 80°C for 4 hours, then repeat the above exchange once; The mixed solution of tartaric acid / L was treated at 90°C for 4 hours; then 1000 grams (NH 4 ) 2 SiF 6 The aqueous solution with a concentration of 3% was treated at 85°C for 4 hours, filtered, washed, dried at 110°C for 8 hours and roasted at 550°C for 4 hours to obtain the final dealuminated HZSM-22.

[0041] Get 65 grams of HZSM-22 molecular sieves of the above-mentioned dealuminated silicon supplementation, 28 grams of pseudo-boehmite (72% on a dry basis), 21 grams of SB powder (72% on a dry basis), 2 grams of squash powder, mix well, and then add 30ml of deionized water and 2.5ml of concentrated nitric acid (66.5w%) are fully mixed and kneaded on a roller compactor to make it a paste-like plastic, extrude a cylindrical strip with a diame...

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Abstract

The invention discloses a method for producing base oil by isodewaxing. In the method, raw oil and hydrogen gas pass through a hydroisomerization catalyst bed under the hydroisomerization condition, wherein hydroisomerization catalysts comprise TON type molecular sieves and metal active ingredients of platinum group; the weight content of the metal active ingredients of platinum group in the hydroisomerization catalysts is 0.05 to 0.5 weight percent; the hydroisomerization catalyst bed at least comprises two hydroisomerization catalysts; the modification degree of the molecular sieves included in the hydroisomerization catalysts is gradually increased along the flowing direction of the raw oil and the hydrogen gas; and a method for keeping the modification degree of the molecular sieves from low to high comprises the steps of ammonium exchange processing, ammonium exchange and aluminum removal processing, and ammonium exchange, aluminum removal and silicon reinsertion processing. In the method of the invention, the composition of the catalysts is adjusted while the activity of the reaction system is ensured, so that the comprehensive reaction performance is improved, the processing degree of the molecular sieves can be reduced, and the production cost is reduced.

Description

technical field [0001] The invention discloses a production method of lubricating oil base oil, in particular a method for producing lubricating oil base oil through hydroisomerization. Background technique [0002] The lubricating oil fraction contains a large amount of macromolecular linear or less branched alkanes (here called waxes) with higher melting point, so it has high pour point, low viscosity index and poor low temperature performance. Therefore, it is necessary to remove the high melting point wax. At present, the commonly used dewaxing methods mainly include solvent dewaxing, catalytic dewaxing and isomeric dewaxing. [0003] Solvent dewaxing is to use the solubility of wax in solvent to remove it. The disadvantage of this method is that it is difficult to choose solvent, waste a lot of organic solvent, harmful to human body and pollute the environment, high equipment investment and operation cost. Catalytic dewaxing is to make the wax in the lubricating oil f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/64B01J29/74C10M101/02
Inventor 贾立明徐会青张喜文刘全杰
Owner CHINA PETROLEUM & CHEM CORP