A kind of catalytic cracking raw material oil hydrogenation pretreatment method
A hydrogenation pretreatment and hydrogenation treatment technology, which is applied in the fields of hydroprocessing process, hydrocarbon oil treatment, petroleum industry, etc., and can solve the problems such as shortening the operating life of catalysts
Active Publication Date: 2016-06-22
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
Improving the removal rate of impurities can be achieved by increasing the severity of the hydrotreating reaction, but this will also lead to a shortened catalyst operating life
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0065] Weigh 1000 g of P1-1, then add 1440 ml of aqueous solution containing 10 ml of nitric acid (product of Tianjin Chemical Reagent No. Dry the wet strips at 120°C for 4 hours to obtain dry strips, shape the dry strips, sieve, grind and sieve the dry strip materials (generally called industrial dry strip waste) with a length of less than 2mm, and take 100-200 Mesh sieving to obtain the modified product P2A of P1-1. The k values of P2A are shown in Table 1.
Embodiment 2
[0067] Weigh 1000 g of P1-1, and flash dry at 240°C for 6 minutes to obtain P2B, a modified product of P1-1. See Table 1 for the k values of P2B.
Embodiment 3
[0069] 200 grams each of P2A obtained in Example 1 and P2B obtained in Example 2 were evenly mixed to obtain the modified product P2C of P1-1. See Table 1 for the k value of P2C.
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Abstract
A hydrogenation pretreatment method for catalytically-cracked raw oil comprises enabling raw oil to be contacted with a catalyst combination under the conditions of a hydrogenation processing reaction. The catalyst combination comprises a hydrogenation processing catalyst I and a hydrogenation processing catalyst II, and the hydrogenation processing catalyst I and the hydrogenation processing catalyst II in the catalyst combination are arranged to enable raw oil to be successively contacted with the catalyst I and the catalyst II. Based on the total amount by volume of the catalyst combination, the content of the catalyst I is 5-40%, and the content of the catalyst II is 60-95%. The catalyst I contains a boron-containing aluminium oxide carrier with a double-peak pore structure, and characterized by mercury intrusion porosimetry, the carrier has the pore volume of 0.8-1.2 mL / g and the specific surface area of 120-400 m<2> / g, the pore volume of pores with the diameter of 6-30 nm accounts for 58-80% of the total pore volume, the pore volume of pores with the diameter of 10-30 nm is less than 55% of the total pore volume, and the pore volume of pores with the diameter of 300-500 nm accounts for 10-35% of the total volume.
Description
technical field [0001] The invention relates to a method for hydrotreating hydrocarbon oil. Background technique [0002] With the intensified trend of heavy crude oil and the increasing demand for light oil products in social development, the combined process technology of heavy oil hydrogenation and catalytic cracking is generally favored by oil refining companies. The combined process can not only increase the yield of light oil, but also help reduce the emission of sulfur, nitrogen and other pollutants, and has obvious social and economic benefits. Affected by the catalytic cracking process and catalyst, in order to increase the yield of light oil and reduce the sulfur content in catalytic cracking gasoline, it is usually required that the metal Ni+V content in the raw oil for catalytic cracking processing should be less than 1ppm, and the sulfur content should be less than 3000ppm. However, due to the continuous deterioration of raw material properties, heavy oil (usua...
Claims
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IPC IPC(8): C10G65/02
CPCC10G65/02
Inventor 胡大为杨清河孙淑玲刘佳任亮蒋东红
Owner CHINA PETROLEUM & CHEM CORP