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Catalytic gasoline absorbing desulfurization catalyst, preparation method and application thereof

A catalytic cracking gasoline, adsorption desulfurization technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of adsorbent running loss and production cost increase , to achieve good desulfurization activity, high wear resistance and good strength

Active Publication Date: 2010-12-08
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, it is easy to cause the running loss of the adsorbent, which will lead to the increase of the production cost

Method used

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  • Catalytic gasoline absorbing desulfurization catalyst, preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Mix 40g of active zinc oxide with 30g of fumed white carbon black, 10g of aluminum hydroxide and 20g of NiO, add water and make a slurry. Spray into balls Φ0.5~1.5mm, and dry at 120°C for 3 hours. 500 ° C × 4 roasting.

[0028] Adsorption desulfurization performance evaluation conditions: The reduction conditions of the adsorbent are: reduction temperature 450°C, pressure 0.15MPa, and hydrogen as the medium. Adsorption desulfurization reaction conditions are: reaction temperature 380°C, reaction pressure 2.0MPa, volumetric space velocity 7h-1, hydrogen flow rate 150ml / min, and adsorbent loading 30ml. The sulfur content of catalytic cracking gasoline is 2000ppm, and the research octane number is 92. The results of the sulfur in the desulfurized gasoline and the research octane number after the moving bed activity evaluation is stable for 2 hours are shown in Table 1.

Embodiment 2

[0030] 10% active zinc oxide; 80% fumed white carbon black; 5% alumina; 5% NiO nickel nitrate mixed with water, oil injection molding; 120 ° C × 6 hours drying, 550 ° C × 6 hours roasting to get finished catalyst.

Embodiment 3

[0032] Add 60% active zinc oxide, 15% fumed white carbon black, 15% aluminum oxide and 10% NiO or nickel carbonate with water to make slurry, spray into balls, and dry at 140°C for 6 hours. Calcined at 500°C for 4 hours to obtain the finished catalyst.

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Abstract

The invention relates to a catalytic gasoline absorbing desulfurization catalyst, a preparation method and an application thereof. According to weight percentage, the catalyst contains 10 to 85% of activated zinc oxide, 5 to 80 % of white carbon black, 5 to 30 % of aluminum oxide and 4 to 45 % of nickel oxide. The preparation method comprises the following steps of: (1) decomposing titanium tetrachloride under hydrogen atmosphere at 1400 DEG C to obtain gaseous phase white carbon black, (2) mixing the activated zinc oxide, gaseous phase white carbon black, aluminum oxide and nickel salt into starch, (3) spraying the obtained mixture into ball or injecting into ball, (4) drying the balls formed in the step (3) at 110 to 150 DEG C, and (5) roasting the balls obtained from the step (4) at 300 to 550 DEG C. The prepared absorbing desulfurization catalyst has the advantages of strong intensity, excellent durability, excellent desulfurization activity, small octane number loss, low transportation cost, and application on mobile bed absorbing desulfurization technique.

Description

technical field [0001] The invention belongs to the desulfurization technology for catalytic cracking gasoline, in particular to an adsorption desulfurization catalyst for catalytic cracking gasoline and its preparation and application. 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 will drop to 50ppm by 2005. The current sulfur content of gasoline in the EU is 150ppm, and will drop 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 also continuou...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J37/00B01J35/08C10G29/16
Inventor 熊纯青周红军徐文清周广林卢春喜张文慧徐晓宁朱凌辉李玮明
Owner PETROCHINA CO LTD
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