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Absorbing desulfurizing catalyst for catalytic cracking petroleum and preparing method thereof

A technology for catalytic cracking gasoline and adsorption desulfurization, which is applied in the petroleum industry, refining hydrocarbon oil, etc., to achieve the effects of easy operation, simple preparation method and good regeneration effect

Inactive Publication Date: 2005-02-23
SINOPEC QILU CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a catalytic cracking gasoline adsorption desulfurization catalyst and its preparation method to solve the desulfurization problem of catalytic cracking gasoline, the preparation method is simple, the sulfur capacity is large, and the gasoline octane number has little influence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The reduced nickel metal solid sorbent was prepared as follows:

[0026] 45g nanometer zinc oxide and 25g diatomaceous earth silicon oxide, 10gAl 2 o 3 , 18gNiO mixed for 30min, added 80ml of deionized water and kneaded for 40min, and then formed into a φ3mm clover catalyst. The catalyst was dried at 120°C for 6 hours and then calcined at 500°C for 4 hours.

[0027] The nickel oxide solid adsorbent was reduced with hydrogen for 4 hours under the conditions of 500° C. and 0.5 MPa, so that the nickel in the catalyst was basically reduced to zero valence state.

Embodiment 2

[0029] The desulfurization ability of the reduced nickel solid catalyst prepared in Example 1 was tested as follows. The catalyst obtained in Example 1 is loaded into a stainless steel reactor with an internal diameter of φ20mm, with a volume of 30ml and an original particle size. 2 , N 2 Mixed gas reduction for 4 hours, then in H 2 Airspeed 1000h -1 , Reaction temperature 370℃, liquid space velocity 5h -1 Under the condition, the gasoline with sulfur content of 2000ppm is introduced. At the outlet of the reactor, it was detected that the sulfur content in the gasoline was <5ppm.

[0030] After test 1, at a temperature of 370°C and a pressure of 0.5Mpa, H 2 , N 2 Airspeed 2000h -1 2h, and then at a temperature of 370°C and a pressure of 0.5Mpa, gradually introduce O 2 , N 2 Regenerate the catalyst for 3-4 hours under regeneration conditions to regenerate the catalyst. Then make the catalyst under pressure 0.5Mpa, 500°C, H 2 , N 2 Airspeed 2000h -1 Down reduction f...

Embodiment 3

[0036] 60% nano zinc oxide, 15% silicon oxide, 5% Al 2 o 3 , 20% NiO and mixed for 30 minutes, added 80ml of deionized water and kneaded for 40 minutes, and then molded into a φ3mm granular catalyst. The catalyst was dried at 140°C for 6 hours and then calcined at 550°C for 5 hours.

[0037] The nickel oxide solid adsorbent was reduced with hydrogen for 6 hours under the conditions of 350° C. and 1 Mpa, so that the nickel in the catalyst was basically reduced to zero valence state.

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Abstract

A kind of catalyst for Fcc gasoline's adsorption desulfuration contains in weight percent: 10-85% nano zinc oxide, the atomic diameter of which is 100-500 mu m, 5-80% silica oxide, 5-30% alumina oxide, and 4-45% nickel oxide. The method of preparation is: (1) Mix evenly the nano zinc oxide, silica oxide, alumina oxide, and nickel oxide; dry the particle of step (b); roast the dry particle of step(c); deoxidize the particle of step(d) by proper reductant. The portions of this catalyst remain mixed, and the method adopts the technology of roasting. The catalyst has a good strength, high desulfuration activity, and effective regeneration. Because of the adoption of nano zinc oxide, it causes little to octane number and applies to desulfuration of FCC gasoline. Moreover, the method of preparation is simple and the operation is easy.

Description

technical field [0001] The invention belongs to the desulfurization technology for catalytic cracking gasoline, in particular to a catalyst for adsorption and desulfurization of catalytic cracking gasoline. Background technique [0002] The sulfur contained in gasoline has a great impact on environmental protection. In order to improve the current situation of environmental pollution, countries have formulated strict emission standards and fuel specifications. Japan is leading the world in research results on low-sulfur gasoline. The sulfur content of gasoline has mostly reached 100ppm, and by 2005 it will be reduced to 50ppm. The current sulfur content of EU gasoline is 150ppm, which will be reduced to 50ppm by 2005. In 1996, the sulfur content of gasoline in California reached 30ppm, and in other states, the sulfur content in gasoline reached 140-170ppm in 2000, and it will be reduced to below 140ppm after 2000. The Chinese government is als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00
Inventor 周红军王萍周广林张文慧孔海燕
Owner SINOPEC QILU CO
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