Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method

A desulfurization catalyst and oxide technology, applied in the field of hydrocarbon oil desulfurization, can solve the problems of poor wear resistance, unstable structure, low desulfurization activity, etc., and achieve good wear resistance, less coke, and sulfur content low effect

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects of low desulfurization activity, unstable structure and poor wear resistance of the adsorbent in the prior art, and provide a desulfurization catalyst and its preparation method and a method for desulfurization of hydrocarbon oil

Method used

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  • Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method
  • Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method
  • Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method

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preparation example Construction

[0043] The present invention also provides a preparation method of the desulfurization catalyst provided by the present invention, the method comprising: (1) mixing a precursor of lead oxide, a rare earth metal compound, water and an acidic liquid to obtain a rare earth-lead sol; (2) adhering alumina A binder, a silicon oxide source, a first metal oxide, water and an acidic liquid are mixed to form a slurry, and contacted with the rare earth-lead sol to obtain a carrier mixture, and the carrier mixture is subjected to molding, first drying and first calcination, Obtain a carrier; (3) introduce the precursor of the active metal on the carrier, and carry out the second drying and the second roasting to obtain the catalyst precursor; (4) reduce the catalyst precursor under a hydrogen atmosphere to obtain the desulfurization catalyst.

[0044] According to the present invention, the precursor of lead oxide is lead oxide or a substance that can be transformed into lead oxide under ...

Embodiment 1

[0075] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0076] (1) Preparation of rare earth-lead sol. 1.45 kg of lead oxide (Beijing Chemical Plant, analytically pure) was added to 3.5 kg of 5% by weight nitric acid (Beijing Chemical Plant, chemically pure) solution and stirred for 1 h to obtain a colorless and transparent lead sol. 430 g of lanthanum carbonate (Sinopharm Chemical Reagent Company, lanthanum oxide content 45% by weight) was dissolved in 0.2 kg of deionized aqueous solution and mixed with lead sol to obtain lanthanum lead sol.

[0077] (2) Prepare the carrier. Mix 2.40kg of kaolin (catalyst Qilu Branch, containing 2.0kg on a dry basis), 2.0kg of pseudoboehmite (catalyst Nanjing Branch, containing 1.50kg on a dry basis) and 9.0kg of deionized water under stirring Finally, add 200 g of concentrated nitric acid (Beijing Chemical Plant, chemically pure) and stir to make the pH = 1.8, and raise t...

Embodiment 2

[0084] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0085] (1) Preparation of rare earth-lead sol. 0.9 kg of lead oxide was added to 2.0 kg of 15% by weight hydrochloric acid solution and stirred for 1 hour to form a colorless and transparent lead sol. Add 300 g of cerium oxide (Sinopharm Chemical Reagent Company, analytically pure) into the lead sol, stir and mix evenly, then add 25% by weight of ammonia solution dropwise until a cerium-lead sol is formed.

[0086] (2) Prepare the carrier. With 1.63kg of expanded perlite (catalyst Qilu branch, containing dry basis 1.6kg), 2.27kg of pseudo-boehmite (catalyst Nanjing branch, containing dry basis 1.70kg) and 8.0kg of deionized water under stirring After mixing evenly, add 200g of concentrated nitric acid and stir to make the pH = 1.8, and raise the temperature to above 60°C for acidification for 1 hour. When the temperature drops below 40° C., 4.05 kg of...

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Abstract

The invention discloses a desulphurization catalyst, a preparation method of the desulphurization catalyst and the desulphurization catalyst obtained by the method, and an application of the desulphurization catalyst in sulfur-containing hydrocarbon oil desulphurization. The desulphurization catalyst contains alumina, a silicon oxide source, a first metal oxide, lead oxide, a rare-earth metal oxide and active metal; and an XRD spectrum of the desulphurization catalyst has a characteristic peak of a rare earth-lead composite oxide. The desulphurization catalyst has better desulphurization activity and activity stability.

Description

technical field [0001] The present invention relates to a desulfurization catalyst and a preparation method thereof and a method for desulfurizing hydrocarbon oil, in particular to a desulfurization catalyst, a method for preparing a desulfurization catalyst and a desulfurization catalyst obtained by the method, and using the desulfurization catalyst for desulfurization of hydrocarbon oil Methods. Background technique [0002] The sulfur oxides produced by the combustion of sulfur in vehicle fuels will inhibit the activity of noble metal catalysts in vehicle exhaust converters and cause irreversible poisoning. As a result, the vehicle exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, and these exhaust gases are easily catalyzed by sunlight to form photochemical smog and cause acid rain. At the same time, sulfur oxides in the atmosphere are also the main cause of acid rain. one. As people pay more and more attention to environmental pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835B01J23/83C10G45/06
Inventor 田辉平王鹏孙言林伟王磊王振波
Owner CHINA PETROLEUM & CHEM CORP
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