Catalyst for selective hydrodesulfurization and preparation method thereof

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of low olefin saturation rate and achieve good desulfurization options sexual effect

Active Publication Date: 2010-09-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this catalyst to treat catalytic cracking gasoline raw materials, the olefin saturation rate is low

Method used

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  • Catalyst for selective hydrodesulfurization and preparation method thereof
  • Catalyst for selective hydrodesulfurization and preparation method thereof
  • Catalyst for selective hydrodesulfurization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take by weighing 274.2 grams (dry basis) of aluminum oxide hydrate (trade name SB, German Condea company product, wherein gibbsite content 85% by weight) prepared by alkoxy aluminum hydrolysis method, and extrude into a circumscribed circle with a diameter of The 1.4mm trefoil strip was dried at 170°C for 4 hours and calcined at 900°C for 4 hours to obtain carrier Z1.

[0044] Molybdenum and cobalt were introduced into the carrier Z1 by co-impregnation. First, take by weighing 11.2 grams of ammonium paramolybdate, and dissolve it in 90 milliliters of ammonia water with a concentration of 18% by weight until it is clear and transparent, then take by weighing 4.6 grams of basic cobalt carbonate and 15.7 grams of EDTA, and add the above solution to continue dissolving to The total solution is 105 ml. Heating during the dissolution process and keeping the temperature at 50°C, impregnated 100g of carrier Z1 with this solution, and dried at 170°C for 4 hours to obtain cataly...

Embodiment 2

[0046] Weigh 100 g of silica (product of Qingdao Ocean Chemical Special Silica Gel Co., Ltd., specific surface area 387 m2 / g, pore volume 0.99 ml / g), which is called carrier Z2.

[0047] Molybdenum and cobalt are introduced into the carrier Z2 by means of co-impregnation. First, weigh 9.4 grams of ammonium paramolybdate, weigh 7.4 grams of cobalt nitrate, and 7.4 grams of citric acid, and dissolve ammonium paramolybdate, citric acid, and cobalt nitrate in sequence with deionized water to 105 milliliters of the total solution, heat, and keep the dissolution temperature The carrier Z2 was impregnated with this solution at 50°C and dried at 170°C for 4 hours to obtain catalyst C2. The cobalt and molybdenum oxide contents in C2 and the f value of the catalyst are listed in Table 1.

Embodiment 3

[0049] Take by weighing 274.2 grams (dry basis) of aluminum oxide hydrate (trade name SB, German Condea company product, wherein gibbsite content 85% by weight) prepared by alkoxy aluminum hydrolysis method, and extrude into a circumscribed circle with a diameter of The 1.4 mm trefoil strip was dried at 170° C. for 4 hours and calcined at 1000° C. for 4 hours to obtain carrier Z3.

[0050] Molybdenum and cobalt were introduced into carrier Z3 by means of co-impregnation. First, take by weighing 18.0 grams of ammonium paramolybdate, and be dissolved in 90 milliliters of aqueous ammonia with a concentration of 18% by weight until the solution is clear and transparent, then weigh 8.4 grams of basic cobalt carbonate, 22.2 grams of EDTA, add the above solution and continue to dissolve to The total solution is 105 ml. Heated during the dissolution process, and the temperature was kept at 50° C., impregnated 100 g of carrier Z3 with this solution, and dried at 170° C. for 4 hours to...

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Abstract

The invention discloses a catalyst for selective hydrodesulfurization. The catalyst contains a carrier and at least one VIB group metal component with hydrogenation activity and at least one VIII group metal component with hydrogenation activity. In the invention, a sulfide of the catalyst is used as a sample, and TEM method is used for characterization, the f value of the catalyst is 7 to 10 and f is equal to fe/fc, wherein fe is the ratio of the edge atomicity of the lamellar crystal of the active phase of the VIB group metal component with hydrogenation activity to the total atomicity of the lamellar crystal; and fc is the ratio of the angular atomicity of the lamellar crystal of the active phase of the VIII group metal component with hydrogenation activity to the total atomicity of the lamellar crystal. Compared with the conventional catalyst, the catalyst provided by the invention has higher desulfuration selectivity.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, more specifically to a selective hydrodesulfurization catalyst and a preparation method thereof. Background technique [0002] As we all know, air pollution brings serious environmental problems. Excessive engine emissions are one of the main causes of air pollution. In recent years, in order to meet the requirements of protecting the environment, countries around the world have put forward stricter restrictions on the composition of engine fuel in order to reduce the emission of harmful substances. SOx, the combustion product of sulfide in gasoline, is one of the main harmful substances, and it is also one of the main substances that poison the catalyst of the catalytic converter of automobile exhaust gas. [0003] In general, sulfur contained in gasoline fractions is easier to remove by hydrotreating than heavy distillates. However, olefins with a low degree of bra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86B01J23/88B01J23/882C10G29/16
Inventor 褚阳李明丰高晓冬李会峰夏国富聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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