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Hydrogenation sweetening catalyst, preparing method and application thereof

A hydrodesulfurization and catalyst technology, which is applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of unqualified mercaptan sulfur, high octane number loss, etc., and achieves high liquid yield, octane The effect of less loss of alkane number and high desulfanization activity

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its advantage is that it does not need fractional distillation to process full fraction FCC gasoline. The disadvantage is that most of the residual sulfur compounds in the final product are mercaptan sulfur compounds, which leads to unqualified mercaptan sulfur in the product
When this method is used to treat FCC gasoline, the mercaptan content is reduced from 212 μg / g to 10 μg / g, the research octane number (RON) loses 3.3 units, and the motor octane number (MON) loses 3.0 units. Therefore, this method The disadvantage is more octane loss when dealing with FCC gasoline

Method used

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  • Hydrogenation sweetening catalyst, preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take by weighing 200g and synthesize nanometer NaZSM-5 molecular sieve by the method for embodiment 1 among CN1240193A, and 50g Al 2 o 3 powder, 5g sage powder mixed evenly, add 2.6gHNO 3 The aqueous solution, after kneading, is extruded into a cylindrical shape in an extruder, dried at 120°C overnight, and then calcined at 540°C for 4 hours. Mix the calcined catalyst with 0.4mol / L NH 4 NO 3 The aqueous solution is impregnated at room temperature for 1 to 6 hours according to the sieve liquid volume ratio of 1:3~10, poured off the exchange liquid, repeats the above operation, then washes with the same volume of deionized water until neutral, and dries at 120°C for 5 hours. Calcined at 540°C for 4 hours to obtain a nanometer HZSM-5 catalyst carrier, wherein the content of nanometer HZSM-5 is 76.9wt%, Al 2 o 3 The content is 23.1wt%. Then put the nanometer HZSM-5 in the constant temperature section of the hydrothermal treatment furnace, and treat it with ammonia con...

Embodiment 2

[0035] Weigh 30 grams of copper nitrate, 18 grams of zinc nitrate and 60 milliliters of deionized water, mix them, and dissolve them at 60° C. for 1 hour to obtain 65 milliliters of co-immersion solution containing copper and zinc. Take 100 grams of the water-treated HZSM-5 carrier prepared in Example 1 and put it into the co-immersion solution containing copper and zinc for 8 hours, then dry it at 120°C for 8 hours, and roast it at 500°C for 8 hours to obtain the catalyst RM- 1.

[0036] The physical properties of the RM-1 catalyst are listed in Table 1.

Embodiment 3

[0041] Weigh 45 grams of copper nitrate, 29 grams of zinc nitrate and 60 milliliters of deionized water and mix them at 60 ° C for 1 hour to obtain 65 milliliters of co-immersion solution containing copper and zinc. Take 100 grams of the water-treated HZSM prepared in Example 1 -5 Carrier, impregnated with the above impregnating solution at room temperature, dried at 120°C for 8 hours, and calcined at 500°C for 8 hours to obtain catalyst RM-2.

[0042] The physical properties of the RM-2 catalyst are listed in Table 1.

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Abstract

The invention discloses a hydrogenation sweetening catalyst, a preparing method and application thereof. The catalyst has the main carrier component of an HZSM-5 molecular sieve, and the active components of Cu and Zn. The active components contain 5% to 27% of copper oxide and 3% to 15% of zinc oxide according to the weight of oxide, and are prepared by adopting a saturation and co-leaching technique. The catalyst is suitable for selective hydrogenation sweetening reactions of light oil products and has the advantages of high sweetening activity, low olefin hydrogenation activity, high recovery rate of liquid and less octane number loss after reactions and the like.

Description

technical field [0001] The invention relates to a hydrodesulfurization catalyst and its preparation method and application, in particular to a hydrodesulfurization catalyst, its preparation method and its application in gasoline selective hydrodemercaptanization. Background technique [0002] With the increasingly stringent environmental protection regulations, countries around the world have put forward more and more stringent requirements for gasoline products, especially for the sulfur content in gasoline. / g to ≯150μg / g, and will develop into ≯50μg, even ≯10μg "sulfur-free gasoline". [0003] At present, catalytic cracking (FCC) is an important source of gasoline. For example, the proportion of FCC gasoline in refined gasoline in Chinese refineries is more than 80%, while the sulfur content in FCC gasoline is generally 200-1000μg / g, and the mercaptan content is generally 20~100μg / g. Therefore, FCC gasoline has high sulfur and mercaptan content, and reducing the sulfur ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/46B01J37/10C10G45/12C10G65/04
Inventor 尤百玲赵乐平方向晨庞宏
Owner CHINA PETROLEUM & CHEM CORP
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