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Catalyst for desulfurizing transforming of gasoline and preparation method

A catalyst and upgrading technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as low liquid yield, achieve large specific surface area, low HYD, good hydrodesulfurization selective effect

Inactive Publication Date: 2017-06-23
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems such as low liquid yield and waste lye treatment in this method.

Method used

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  • Catalyst for desulfurizing transforming of gasoline and preparation method
  • Catalyst for desulfurizing transforming of gasoline and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 1.2kg of zinc nitrate in 6L of water to make a solution containing zinc, and dissolve 0.24kg of sodium metaaluminate and 0.30kg of sodium carbonate in 4L of water to make a solution containing aluminum. Divide the zinc-containing solution into 3 equal parts, each 2L. Take 2L of zinc-containing solution, keep the temperature at 80°C, add aluminum-containing mixed solution dropwise to it until the pH value reaches 9.0; stop dropping the aluminum-containing mixed solution, then add 2L of zinc-containing solution dropwise to the mixing system, and continue to drop aluminum-containing solution Mix the solution until the pH value reaches 9.0; titrate the aluminum-containing mixed solution and the zinc-containing solution alternately until all the zinc-containing solutions are added, and add the aluminum-containing mixed solution dropwise until the pH reaches 9.0. The total titration time is 3 hours. The obtained mixture was aged at 80°C for 4h, cooled and washed unti...

Embodiment 2

[0041] The preparation method and steps of the composite carrier containing zinc oxide-alumina are the same as in Example 1, and the zinc oxide containing zinc-aluminum spinel is prepared, and the pH value is adjusted to 8.7. In terms of oxides, the content of zinc oxide is 70%; the specific surface area is 191m 2 / g. The components and content of the composite carrier are the same as in Example 1, except that after the composite carrier is obtained, potassium and magnesium are used to modify the surface of the composite carrier containing zinc oxide-alumina. The specific process includes the following steps: configuring potassium nitrate-containing and magnesium nitrate aqueous solution as the spray liquid, respectively weighed 1.2g of potassium nitrate, 10.7g of magnesium nitrate, completely dissolved in 30ml of distilled water, then diluted with deionized water, and sprayed the composite carrier of zinc oxide-alumina, so that the outer surface of the carrier The content of...

Embodiment 3

[0045] The preparation method and steps of the composite carrier containing zinc oxide-alumina are the same as in Example 1. Zinc oxide containing zinc aluminum spinel was prepared, and the pH value was adjusted to 9.3. Zinc oxide containing zinc aluminum spinel, calculated as oxide, the content of zinc oxide is 63%; the specific surface area is 214m 2 / g.

[0046] The composite carrier includes 18.3wt% of zinc oxide containing zinc-aluminum spinel, 79wt% of alumina, and the contents of phosphorus, potassium and magnesium in the auxiliary components are P 2 o 5 0.9wt%, K 2 O 0.8wt%, MgO 1.0wt%. Composite carrier specific surface area 242m 2 / g.

[0047] Nickel nitrate, ammonium molybdate, and cobalt nitrate were prepared as an impregnation solution, and the composite carrier containing zinc oxide-alumina was impregnated. The specific steps were the same as in Example 1. Dry at 130° C. for 4 hours, and calcined at 600° C. for 6 hours to obtain hydrodesulfurization modif...

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Abstract

The invention discloses a catalyst for desulfurizing transforming of gasoline. A carrier of a hydrogenating and desulfurizing transforming catalyst is a zinc oxide-aluminum oxide composite carrier; active components comprise cobalt oxide, nickel oxide and molybdenum oxide. The composite carrier has the advantages that the zinc and aluminum are uniformly dispersed, and the specific surface area is high. The hydrogenating and desulfurizing transforming catalyst has the advantages that the saturating rate of olefin is low, the loss of octane value is little, the desulfurizing rate is high, and the stability is good.

Description

technical field [0001] The invention belongs to the technical field of hydrodesulfurization catalysts, and in particular relates to a gasoline desulfurization catalyst and a preparation method thereof. The catalyst can be used for gasoline hydrodesulfurization and upgrading to produce high-quality gasoline. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection, the emission of toxic and harmful substances in automobile exhaust will be strictly controlled, so the quality requirements of oil products used as engine fuels are becoming more and more stringent. For this reason, various countries have put forward extremely stringent restriction indicators on motor gasoline specifications such as oxygen content, vapor pressure, benzene content, total aromatics content, boiling point, olefin content and sulfur content, in order to reduce the emission of harmful substances. At present, more than 80% of the finished gasoline in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J35/10
CPCB01J27/19B01J35/615
Inventor 晁会霞罗祥生张海燕
Owner QINZHOU UNIV
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