Hydrogenation active protective agent with titanium oxide-alumina as carrier and its preparation and application
A technology of hydrogenation activity protection and hydrogenation activity, which is applied in the field of hydrogenation activity protection agent and its preparation, and can solve the problems of difficulty in maintaining the crushing strength of the protection agent, limitation, small specific surface area, etc.
Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary
Problems solved by technology
[0005] As mentioned above, in order to maintain a higher bed porosity, the hydrogenation protective agent provided by the prior art adopts a porous and special-shaped appearance, such as a porous ball, a porous cylinder, a honeycomb disc or a stretched ring, etc. Due to the high porosity, the pressure of the protective agent It is difficult to maintain the crushing strength and must be roasted at high temperature
This kind of protective agent has good wear resistance and crushing strength, but the disadvantage is that the pore volume is low and the specific surface area is small, which limits their ability to remove metal impurities to a certain extent
Method used
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example 1
[0043] Mix 1000 grams of aluminum hydroxide powder and 100 grams of titanium dioxide powder, press and form a honeycomb cylinder with a height of 10mm, a diameter of 40mm, a wall thickness of 2mm, and 100 triangular channels in a mold. After drying at 120°C for 4 hours, the ℃ for 4 hours to obtain carrier Z1. The physical and chemical properties of carrier Z1 are shown in Table 1.
example 2
[0045] Mix 200 grams of aluminum hydroxide powder with 80 grams of aluminum titanate powder, press in a mold to form a seven-hole ball with an outer diameter of 16 mm and a hole with a diameter of 3 mm, dry at 80 ° C for 3 hours, and keep the temperature at 950 ° C for 2 hours to obtain the carrier Z2. The physical and chemical properties of carrier Z2 are shown in Table 1.
example 3
[0047] Mix 200 grams of gibbsite powder with 18 grams of titanium dioxide-containing powder, extrude it on a twin-screw extruder to form a stretch ring with an outer diameter of 5.0 mm and a wall thickness of 1.5 mm, dry it at 120°C for 2 hours, and then keep the temperature at 900°C for 3 hours. Vector Z3 was obtained. The physical and chemical properties of carrier Z3 are shown in Table 1.
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Abstract
The invention relates to a hydrogenating activated protective agent using titanium oxide-alumina as a carrier and preparation and application of the hydrogenating activated protective agent. The protective agent comprises a titanium oxide-alumina forming carrier and hydrogenating activated metal components, wherein the titanium oxide-alumina forming carrier comprises 70-99% of alumina and 1-30% of titanium oxide in percentage by weight; the crushing strength of the forming carrier is 20-300 N / particle; the pore volume is 0.3-0.9 ml / g; and the specific surface area is greater than 30 and less than or equal to 150 m<2> / g. Compared with the hydrogenating activated protective agent in the prior art, the protective agent provided in the invention has the carrier with higher pore volume and specific surface area under the conditions of maintaining high filling voidage and strength, so that the protective agent has higher activity and stability in the hydrogenating process.
Description
technical field [0001] The invention relates to a hydrogenation active protective agent and a preparation method thereof, in particular to a heavy oil hydrogenation treatment protective agent and a preparation method thereof. Background technique [0002] With the continuous shortage of crude oil resources and the increasing demand for high-quality oil products, the processing volume of heavy and low-quality oil products by petrochemical enterprises has increased year by year. Compared with distillate oil, heavy oil contains a large amount of metal impurities such as iron, calcium, sodium, potassium, etc., and many secondary processed heavy oils also contain solid powders such as catalysts remaining in the oil during upstream processing, so before hydrotreating The above impurities must be filtered, intercepted and removed. For this reason, a certain amount of protective agent is usually graded on the upper part of the heavy oil hydrotreating catalyst to remove metal impuri...
Claims
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IPC IPC(8): B01J23/888B01J23/883B01J23/882B01J21/06B01J37/10B01J33/00C10G45/08
Inventor 胡大为杨清河刘佳牛传峰孙淑玲聂红王奎戴立顺刘涛邵志才
Owner CHINA PETROLEUM & CHEM CORP