Desulphurization catalyst and preparation method and application thereof

A technology of desulfurization catalyst and zinc oxide, which is applied in the application field of desulfurization catalyst in the desulfurization of sulfur-containing hydrocarbon oil, can solve the problems affecting the desulfurization activity and stability of the adsorbent composition, and achieve good gasoline quality, good desulfurization activity, The effect of octane increase

Active Publication Date: 2015-03-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the adsorbent composition contains alumina, when regeneration is performed, zinc oxide, which has the function of storing sulfur under high temperature, will combine with alumina to produce zinc aluminate and lose this function, which will affect the desulfurization activity and performance of the adsorbent composition. stability

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  • Desulphurization catalyst and preparation method and application thereof
  • Desulphurization catalyst and preparation method and application thereof
  • Desulphurization catalyst and preparation method and application thereof

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preparation example Construction

[0037] The present invention also provides a method for preparing the desulfurization catalyst provided by the present invention, the method comprising: (1) mixing and contacting the precursor of tin dioxide and the precursor of rare earth oxide to obtain rare earth-tin sol; (2) mixing zinc oxide , a silicon oxide source, a silica-alumina molecular sieve having a 12-membered ring channel structure, and water are mixed to form a slurry mixed with the rare earth-tin sol, then contacted with an acidic liquid to obtain a carrier mixture, and then formed, dried and roasted to obtain a carrier; (3) introducing a compound containing an active metal into the carrier, drying and roasting to obtain a desulfurization adsorbent precursor; (4) reducing the desulfurization adsorbent precursor in a hydrogen atmosphere to obtain a desulfurization catalyst.

[0038] According to the present invention, in the step (1) of the preparation method of the desulfurization catalyst, the rare earth-tin ...

Embodiment 1

[0067] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0068] (1) Preparation of rare earth-tin sol. 2.85 kg of tin tetrachloride (Beijing Chemical Plant, analytically pure, 99% by weight) was added to 3.5 kg of 5% by weight nitric acid (chemically pure, produced by Beijing Chemical Plant) solution and stirred for 1 hour to obtain a colorless and transparent gel solution, known as tin sol. 1.261 kg of cerium nitrate (Sinopharm Chemical Reagent Co., Ltd., purity greater than 99.0% by weight) was dissolved in 0.2 kg of deionized aqueous solution and mixed with tin sol to obtain cerium tin sol.

[0069] (2) Prepare the carrier. Add 1.33 kg of expanded perlite (containing 0.77 kg of silicon oxide, 0.13 kg of aluminum oxide, 0.07 kg of potassium oxide, and 0.03 kg of sodium oxide) into 0.5 kg of 2% by weight nitric acid solution, heat and stir for 2 hours and then filter to remove potassium, Add impurities suc...

Embodiment 2

[0078] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0079] (1) Preparation of rare earth-tin sol. Add 1.17 kg of tin oxychloride (Aldrich company, analytically pure, 98.5% by weight) to 2.0 kg of 15% by weight hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) solution and stir for 1 hour to form a colorless and transparent gel solution, known as tin sol. Add 0.1 kg of lanthanum oxide (analytically pure, Sinopharm Group) into the tin sol, stir and mix evenly, then add 25% by weight ammonia solution dropwise until the lanthanum tin sol is formed.

[0080] (2) Prepare the carrier. Combine 1.2 kg of diatomite (containing 1.00 kg of silicon oxide), 6.00 kg of zinc oxide powder (Headhorse Company, purity 99.7% by weight), 0.24 kg of β molecular sieve (Nanjing Catalyst Branch, containing 0.20 kg on a dry basis, silicon-aluminum atom moles ratio of 20:1) and 5.0 kg of deionized water were...

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Abstract

The invention discloses a desulphurization catalyst, and also discloses a preparation method of the desulphurization catalyst and the desulphurization catalyst prepared by the method, and an application of the desulphurization catalyst in desulphurization of sulfur-containing hydrocarbon oil. The desulphurization catalyst contains an aluminosilicate molecular sieve with a duodenary-ring pore-channel structure, rare earth oxide, titanium dioxide, a silicon oxide source, zinc oxide and active metal; the rare earth element content in the aluminosilicate molecular sieve with the duodenary-ring pore-channel structure is 0 mumg/g; and the characteristic peaks of an tetragonal system of a rare earth-tin solid solution or an isometric system of a rare earth-tin composite oxide can be existed in a XRD spectrogram of the desulphurization catalyst. The desulphurization catalyst has better desulphurization activity and desulphurization stability.

Description

technical field [0001] The invention relates to a desulfurization catalyst, a preparation method of the desulfurization catalyst, a desulfurization catalyst prepared by the method, and an application of the desulfurization catalyst in the desulfurization of sulfur-containing hydrocarbon oil. Background technique [0002] The sulfur compounds contained in hydrocarbon oil are likely to cause sulfur emission pollution during use, especially the hydrocarbon oil used as vehicle fuel will amplify the impact of sulfur pollution with the movement of vehicles. For this reason, various countries have formulated strict standards to limit the sulfur content in hydrocarbon oil used as vehicle fuel. [0003] At present, the methods for removing sulfur from hydrocarbon oil mainly include catalytic hydrodesulfurization, catalytic cracking desulfurization, oxidative desulfurization, solvent extraction desulfurization, biological desulfurization, adsorption desulfurization, membrane desulfuri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/068B01J29/12B01J29/80C10G29/16C10G45/12
Inventor 田辉平林伟王鹏孙言朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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