Desulfurization catalyst, method for preparing desulfurization catalyst and hydrocarbon oil desulfurization method

A desulfurization catalyst, zinc oxide technology, applied in the direction of refined hydrocarbon oil, molecular sieve catalyst, chemical instruments and methods, etc., can solve the problems of low gasoline yield, desulfurization activity and stability, etc., and achieve good product gasoline quality and gasoline yield. High, good desulfurization stability

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The adsorbent has strong acidity and strong cracking activity, but the gasoline yield and desulfurization activity and stability are low

Method used

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  • Desulfurization catalyst, method for preparing desulfurization catalyst and hydrocarbon oil desulfurization method
  • Desulfurization catalyst, method for preparing desulfurization catalyst and hydrocarbon oil desulfurization method
  • Desulfurization catalyst, method for preparing desulfurization catalyst and hydrocarbon oil desulfurization method

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preparation example Construction

[0042] The present invention also provides a method for preparing a desulfurization catalyst, the method comprising: (1) contacting a SAPO molecular sieve with a rare earth metal salt solution to obtain a rare earth modified SAPO molecular sieve; (2) adding tin dioxide source, zinc oxide, silicon oxide Source, rare earth modified SAPO molecular sieve and water are mixed to form a slurry that is contacted with an acidic liquid to obtain a carrier mixture, and then shaped, dried and calcined to obtain a carrier; (3) Introducing a compound containing an active metal into the carrier, drying and calcining to obtain A desulfurization catalyst precursor; (4) reducing the desulfurization catalyst precursor under a hydrogen atmosphere to obtain a desulfurization catalyst.

[0043] According to the present invention, there are many ways to obtain the rare earth modified SAPO molecular sieve in step (1), and there may be method one, which includes: before the contact, the SAPO molecular ...

Embodiment 1

[0087] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0088] (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.

[0089] (2) Prepare the carrier. Add 1.33 kg of expanded perlite (containing 0.77 kg of silicon oxide, 0.13 kg of tin dioxide, 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, then filter to remove potassium , sodium, tin and other i...

Embodiment 2

[0098] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0099] (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.

[0100] (2) Prepare the carrier. Put 1.2 kg of diatomite (containing 1.00 kg of silicon oxide) and 6.00 kg of zinc oxide powder (Headhorse Company, purity 99.7% by weight), 0.24 kg of SAPO-34 molecular sieve (Nanjing Catalyst Branch, containing 0.20 kg on a dry basis, silica-alumina The atomic molar ratio is 0.2:1) and 5.0 kg of deionized ...

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Abstract

The invention discloses a desulfurization catalyst, a method for preparing the desulfurization catalyst, the desulfurization catalyst prepared by the method and a hydrocarbon oil desulfurization method. The desulfurization catalyst contains an SAPO molecular sieve, rare earth oxide, tin dioxide, silicon oxide, zinc oxide and active metals, and has good desulfurization activity and desulfurization stability.

Description

technical field [0001] The invention relates to a desulfurization catalyst and a method for its preparation and hydrocarbon oil desulfurization, in particular to a desulfurization catalyst, a method for preparing the desulfurization catalyst, a desulfurization catalyst prepared by the method, and a method for desulfurization of 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 desulfuri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85B01J20/18C10G29/16C10G25/05
Inventor 孙言林伟田辉平朱玉霞王鹏
Owner CHINA PETROLEUM & CHEM CORP
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