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Hydrogenation upgrading method for catalytic cracking raw oil

A catalytic cracking, hydrogenation and upgrading technology, applied in refining to remove heteroatoms, etc., can solve problems such as shortened catalyst operating life

Active Publication Date: 2015-08-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Hydrogenation upgrading method for catalytic cracking raw oil
  • Hydrogenation upgrading method for catalytic cracking raw oil
  • Hydrogenation upgrading method for catalytic cracking raw oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Take 200 grams of Z1, impregnate with 500 ml of mixed solution of ammonium molybdate, nickel nitrate and cobalt nitrate containing MoO3120 g / L, NiO8 g / L, CoO20 g / L for 1 hour, filter and dry at 120 ° C for 2 hours, 450 ℃ calcined for 4 hours to obtain catalyst II1. Based on the total weight of the catalyst, the content of molybdenum oxide, cobalt oxide and nickel oxide in the catalyst II1 was measured by X-ray fluorescence spectrometer, and the measurement results are shown in Table 2. (All instruments are 3271 X-ray fluorescence spectrometers from Japan Rigaku Electric Industry Co., Ltd. For specific methods, see Petrochemical Analysis Method RIPP133-90)

Embodiment 2

[0076] Take 200 grams of Z2, impregnate with 220 milliliters of MoO3172 g / L, NiO9 g / L, CoO32 g / L molybdenum oxide, basic nickel carbonate, basic cobalt carbonate mixed solution for 2 hours, and dry at 120°C for 2 hours. hours, and calcined at 500°C for 2 hours to obtain catalyst II 2 . The content of molybdenum oxide, cobalt oxide, and nickel oxide in the catalyst II 2 was measured in the same manner as in Example 1, and the results are shown in Table 2.

Embodiment 3

[0078] Take 200 grams of Z2, impregnate with 200 ml of molybdenum oxide, basic nickel carbonate, basic cobalt carbonate mixed solution containing MoO3 122 g / L, NiO 9 g / L, CoO 18 g / L for 1 hour, and dry at 120 °C After 2 hours, calcined at 480° C. for 4 hours to obtain catalyst II 3 . The content of molybdenum oxide, nickel oxide and cobalt oxide in the catalyst II 3 was determined in the same manner as in Example 1, and the results are shown in Table 2.

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Abstract

The invention provides a hydro-upgrading method of catalytic cracking raw oil. The method comprises the step of contacting the raw oil with a catalyst composition under the hydrotreating reaction condition, wherein the catalyst composition comprises a hydrodemetallization catalyst I, a hydrodemetallization catalyst II and a hydrodemetallization catalyst III; the catalysts in the catalyst composition are arranged in such a manner that the raw oil is sequentially in contact with the catalyst I, the catalyst II and the catalyst III; with the total quantity of the catalyst composition as the benchmark, the content of the catalyst I is 5-60% by volume, the content of the catalyst II is 10-70% by volume, and the content of the catalyst III is 5-60% by volume; the catalyst II contains a carrier and metal components including molybdenum, cobalt and nickel; with the catalyst II as the benchmark, the content of molybdenum is 5-20wt% and the total content of cobalt and nickel is 1-6wt% by oxides; and the atomic ratio of cobalt to nickel is 2-4.

Description

technical field [0001] The invention relates to a method for hydrotreating hydrocarbon oil, in particular to a method for upgrading catalytic cracking raw oil through hydrotreating. Background technique [0002] Affected by the catalytic cracking process and catalyst, in order to increase the yield of light oil products and reduce the unit consumption of the catalyst, it is required that the metal Ni+V content in the heavy oil catalytic cracking raw oil should be less than 20ppm, the sulfur content should be less than 0.5%, and the residual carbon content should be less than 6.0%. However, with the increasing trend of crude oil becoming heavier and inferior, residual oil hydrotreating as a pretreatment process of catalytic raw materials requires higher impurity removal ability and reaction stability. 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 lif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/08
Inventor 胡大为杨清河刘佳孙淑玲聂红王奎李大东戴立顺赵新强刘涛
Owner CHINA PETROLEUM & CHEM CORP