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

A desulfurization catalyst, alumina technology, applied in the direction of refined hydrocarbon oil, molecular sieve catalyst, chemical instruments and methods, etc., can solve the problems of gasoline yield, low desulfurization activity and stability, and achieve high quality gasoline with low sulfur content The effect of low and good desulfurization activity

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

AI Technical Summary

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

[0036] The present invention also provides a method for preparing a desulfurization catalyst, which includes: (1) mixing and contacting an alumina source and a rare earth oxide precursor to obtain a rare earth-aluminum sol; (2) mixing zinc oxide, a silicon oxide source, The slurry formed by mixing SAPO molecular sieve and water is mixed with the rare earth-aluminum sol, and then contacted with an acidic liquid to obtain a carrier mixture, and then shaped, dried and calcined to obtain a carrier; (3) Introducing an active metal-containing compound into the carrier , drying and calcining to obtain a desulfurization catalyst precursor; (4) reducing the desulfurization catalyst precursor in a hydrogen atmosphere to obtain a desulfurization catalyst.

[0037] According to the present invention, in the step (1) of the preparation method of the desulfurization catalyst, the rare earth-aluminum sol is prepared so as to form a rare earth-aluminum composite oxide in the molding, drying an...

Embodiment 1

[0069] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0070] (1) Preparation of rare earth-aluminum sol. 4.01 kg of alumina (Shandong Aluminum Factory, industrial grade, solid content 71% 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 glue The solution is called aluminum 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 aluminum sol to obtain cerium-aluminum sol.

[0071] (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...

Embodiment 2

[0080] This example is used to illustrate the preparation method of the desulfurization catalyst of the present invention.

[0081] (1) Preparation of rare earth-aluminum sol. 3.25 kg of aluminum isopropoxide (Sinopharm Group, analytically pure, 98.5% by weight) was added to 10 kg of deionized water for hydrolysis, heated to 90 ° C for 1 hour, and 2.0 kg of 15% by weight hydrochloric acid (chemically pure, Beijing Chemical factory) solution and stirred for 1 hour to form a colorless and transparent colloidal solution called aluminum sol. Add 0.1 kg of lanthanum oxide (analytically pure, Sinopharm Group) into the aluminum sol, stir and mix evenly, then add 25% by weight ammonia solution dropwise until the lanthanum aluminum sol is formed.

[0082] (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, contai...

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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, aluminum oxide, silicon oxide, zinc oxide and active metals, wherein the content of the rare-earth element in the open-framework structure of the SAPO molecular sieve is 0mu g / g; and the characteristic peak of a cubic crystal system of a rare earth-aluminum composite oxide exists in an XRD spectrogram of the desulfurization catalyst. The desulfurization catalyst 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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IPC IPC(8): B01J29/85C10G45/12
Inventor 田辉平孙言王鹏朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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