Slag oil hydro-demetallization catalyst and its preparing method

A technology for residual oil hydrogenation and catalyst, which is applied in the petroleum industry, refining hydrocarbon oil, refining to remove heteroatoms, etc. It can solve the problems of difficult preparation of macroporous alumina carrier, poor performance of catalyst hydrogenation demetallization, etc., and achieve easy Effects of implementation, improved performance of hydrodemetallization, and ease of operation

Active Publication Date: 2006-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing methods for preparing hydrodemetallization catalysts, whether the composition of pseudo-boehmite and physical pore-enlarging agent and chemical pore-enlarging agent is used to prepare macroporous alumina carrier, or the compound salt [NH 4 Al(OH) a (CO 3 ) b ·nH 2 O] After peptization and molding according to conventional methods, it is difficult to prepare a macroporous alumina carrier with larger pore diameter and pore volume, and the hydrogenation demetallization performance of the catalyst prepared thus is poor

Method used

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  • Slag oil hydro-demetallization catalyst and its preparing method
  • Slag oil hydro-demetallization catalyst and its preparing method

Examples

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example 1

[0032]Take by weighing aluminum sulfate (Beijing Chemical Plant product) 666 grams, add deionized water and dissolve into molar concentration and be the solution a1 of 0.5, take by weighing 800 grams of ammonium bicarbonate (Beijing Chemical Plant product), add deionized water and dissolve into molar concentration of 2.5 solution b1. Add solution a1 and solution b1 to a 10-liter gelation tank in parallel flow and react at the same time. During the reaction process, the pH value is controlled at 6.5 and the temperature is 15°C. The resulting white precipitate is precipitated at 55°C for 1.5 hours and filtered. , the filter cake was washed three times with 10 times (weight) of deionized water at 55° C., and dried at 120° C. in a drying oven for 4 hours to obtain ammonium aluminum carbonate A, whose chemical formula was (NH 4 ) 0.3 AlO(OH)(HCO 3 ) 0.3 ·3H 2 O, the sulfate ion content is 0.3% by weight.

example 2

[0034] Take by weighing 483 grams of aluminum chloride (product of Beijing Chemical Plant), add deionized water to dissolve into a solution a2 with a molar concentration of 1, take by weighing 800 grams of ammonium bicarbonate (product of Beijing Chemical Plant), add deionized water to dissolve into a molar concentration is solution b2 of 2. Add solution a2 and solution b2 into a 10-liter gelation tank simultaneously in parallel flow for reaction. During the reaction, the pH value is controlled to be 8.0 and the temperature is 30°C. The resulting white precipitate is precipitated at 30°C for 1.5 hours and filtered. , the filter cake was washed twice with 20 times (weight) of deionized water at 30°C, and dried at 120°C for 4 hours in a drying oven to obtain ammonium aluminum carbonate B, whose chemical formula is (NH 4 ) 0.4 AlO(OH)(HCO 3 ) 0.4 2H 2 O, the chloride ion content is 0.4% by weight.

example 3

[0036] Take by weighing aluminum nitrate (Beijing chemical plant product) 750 grams, add deionized water and dissolve into molar concentration and be 1 solution a3, take by weighing 800 grams of ammonium bicarbonate (Beijing chemical plant product), add deionized water and dissolve into molar concentration of 2.5 solution b3. Add solution a3 and solution b3 to a 10-liter gelation tank in parallel and react simultaneously. During the reaction process, the pH value is controlled at 7.0 and the temperature is 25°C. The resulting white precipitate is precipitated at 25°C for 1.5 hours. Filter and dry at 120°C for 4 hours in a drying oven to obtain ammonium aluminum carbonate C, whose chemical formula is (NH 4 ) 0.5 AlO(OH)(HCO 3 ) 0.5 ·3H 2 O.

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Abstract

The slag oil hydrogen de-metallizing catalyst contains a kind of macroporous alumina carrier and supported Mo and/or W and Ni and/or Co metal components. The alumina carrier has medium pore size of 25-35 nm, pore volume of 1.2-2.0 ml/g, and specific surface area 200-350 sq m/g, and is prepared through mixing ammonium aluminum carbonate and one kind of nitrogen containing compounds except acid, forming and roasting. Compared with available slag oil hydrogen de-metallizing catalysts, the catalyst of the present invention has high hydrogen de-metallizing performance and simple preparation process.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, more specifically to a residual oil hydrodemetallization catalyst and a preparation method thereof. Background technique [0002] Hydrodemetallization catalysts used for heavy oil, especially for vacuum residues with high metal content, are prone to rapid decline in activity and deactivation due to the deposition of metal impurities such as nickel and vanadium during use. Catalysts with larger pore volume and larger pore diameter have strong metal and carbon storage capacity, which can slow down the deactivation of the catalyst and prolong the operation period of the catalyst. [0003] The pore structure of the catalyst is determined by the carrier that constitutes the catalyst. Therefore, the preparation of a carrier with a larger pore volume and larger pore diameter is an important step in the preparation of residual oil, especially for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/12C10G45/08
Inventor 刘滨杨清河胡大为聂红牛传峰戴立顺石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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