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Hydrogenation catalyst of diesel production at most amount and production thereof

A hydrogenation catalyst and catalyst technology, which are used in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of low catalyst activity and low medium oil selectivity, and achieve the effect of good cracking effect, maintaining yield and small grain size.

Active Publication Date: 2005-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the silicon-aluminum ratio of the molecular sieve used in the catalyst is too high, the activity of the catalyst is low, and the selectivity of medium oil is not very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 227.1 g of amorphous silica-alumina (SiO 2 The content is 45w%, the pore volume is 0.75ml / g, and the specific surface area is 390m 2 / g), 18.8 grams of modified β molecular sieves, 65.8 grams of macroporous alumina (the pore volume is 1.0ml / g, and the specific surface area is 460m 2 / g) into the roller compactor, mixed for 30 minutes, then add 288.5 grams of binder (with a pore volume of 0.4ml / g and a specific surface area of ​​280m 2 / g of small-pore alumina 107.1g, HNO 3 Molar ratio to alumina is 0.3), rolling for 30 minutes, then add 60 ml of water, continue rolling until the paste can be extruded, extruded, and dried at 110°C for 6 hours. The dried strips were heated up to 580° C. and calcined for 4 hours to obtain the carrier. The carrier was impregnated with an impregnating solution containing tungsten and nickel at room temperature for 2 hours, dried at 120°C for 6 hours, and calcined at 480°C for 4 hours at programmed temperature to obtain catalyst A. The ph...

Embodiment 2

[0045] 252.8 grams of amorphous silicon aluminum (SiO 2 The content is 65w%, the pore volume is 0.58ml / g, and the specific surface area is 340m 2 / g), 9.4 grams of modified β molecular sieves, 41.1 grams of macroporous alumina (pore volume is 0.75ml / g, specific surface area is 360m 2 / g) put into the roller compactor and mix for 20 minutes, then add 323.1 grams of binder (with a pore volume of 0.45ml / g and a specific surface area of ​​300m 2 / g small pore alumina 120.0g, HPO 3 The molar ratio to alumina is 0.2), continue rolling for 40 minutes, then add 55 ml of water, roll until the paste can be extruded, extrude, and dry the extruded strips at 140°C for 3 hours. The drying strip was heated to 530° C. and calcined for 5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 4 hours, dried at 130°C for 3 hours, and then calcined at 460°C for 5 hours to obtain catalyst B. The physical and...

Embodiment 3

[0048] 201.4 g of amorphous silica-alumina (SiO 2 The content is 30w%, the pore volume is 0.89ml / g, and the specific surface area is 460m 2 / g), 31.3 grams of modified β molecular sieves, 82.8 grams of macroporous alumina (same as Example 1) were put into the roller compactor and mixed for 40 minutes, then added 265.4 grams of binding agent (same as Example 1), and continued Roll for 25 minutes, then add 30 milliliters of water, roll to extrude paste, extrude, and extrude at 130°C for 4 hours. The drying strip was heated up to 680° C. and calcined for 2.5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 8 hours, dried at 130°C for 4 hours, and calcined at 530°C for 3 hours to obtain catalyst C. The physical and chemical properties are shown in Table 1.

[0049] The properties of the modified β molecular sieve are: molecular sieve SiO 2 / Al 2 o 3 Weight ratio 85, specific surface ...

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Abstract

A maximum hydrogen catalyst of diesel oil and its production are disclosed. The catalyst consists of amorphous silica aluminum, modified beta molecular sieve, aluminum oxide, VIB family and VIII family metals. Modified beta molecular sieve has high silicon and crystallinity, small crystal grain and acidity. It has good cyclanes selective loop open and alkane isomerization. Its advantages include higher heavy oil hydrogen crack activity and middle oil selectivity, better diesel oil absorption and lower filtering point, and it improves density, colloidal matter, iodine value and color.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst with high activity and maximum mass production of diesel oil and a preparation method thereof. Background technique [0002] Due to the advantages of diesel engine performance and its wide use, the demand for diesel has been very strong, especially in winter in cold regions, the demand for high-quality low-condensation diesel is even more urgent. In addition, in order to protect the ecological environment on which human beings depend, higher requirements are placed on the quality of diesel products. "World Fuel Oil Specification" has put forward more stringent requirements on indicators such as sulfur content, aromatics content, cetane number, density, T95 (95% point distillation temperature of Engler fractionation) in diesel oil from the Class II standard. [0003] The diesel currently produced mainly includes straight-run die...

Claims

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Application Information

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IPC IPC(8): C10G45/00
Inventor 王凤来关明华杜艳泽王刚
Owner CHINA PETROLEUM & CHEM CORP
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