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Combined process for petrol adsorption desulfurising and hydrocarbon oil catalytic cracking

A technology of adsorption desulfurization and catalytic cracking, which is applied in the direction of only multi-stage series refining and cracking process treatment, can solve the problems of poor sulfur reduction effect, high investment and operation costs, and achieve cost saving, sulfur content reduction, and investment saving Effect

Active Publication Date: 2010-05-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Among the existing gasoline sulfur reduction methods, the use of catalytic cracking sulfur reduction agent has poor sulfur reduction effect, and the adsorption desulfurization method requires a separate regeneration system to regenerate the adsorbent, which leads to high investment and operation costs

Method used

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  • Combined process for petrol adsorption desulfurising and hydrocarbon oil catalytic cracking
  • Combined process for petrol adsorption desulfurising and hydrocarbon oil catalytic cracking
  • Combined process for petrol adsorption desulfurising and hydrocarbon oil catalytic cracking

Examples

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preparation example Construction

[0036] In the preparation method of the preferred desulfurizing agent, the copper is distributed in the composition containing the spinel of the alkaline earth metal and aluminum by one impregnation or multiple impregnation methods, and the volume of the solution containing the copper compound used for each impregnation is The composition of alkaline earth metal and aluminum spinel is 1 to 100 times, preferably 1.5 to 30 times, more preferably 2 to 20 times, and still more preferably 3 to 20 times the pore volume of the water drop method. The time of impregnation should be enough to make the copper component uniformly dispersed in the composition of spinel containing alkaline earth metal and aluminum, preferably the time of each impregnation is at least 5 minutes, when the impregnation time exceeds 120 minutes, the impregnation of the catalyst The influence of is negligible, so it is more preferable that the immersion time is 10 minutes to 120 minutes. When the preparation met...

Embodiment 1

[0056] This example illustrates the composition of spinels containing alkaline earth metals and aluminum and their preparation.

[0057] Add 17.1 kilograms of decationized water into a stirred tank, add 1.8 kilograms (dry basis) of pseudo-boehmite under stirring, then add hydrochloric acid with a concentration of 18% by weight, stir evenly, the amount of hydrochloric acid makes the pH value of the slurry 2.0 ; continue to add 5 liters of V 2 o 5 - oxalic acid complex solution, stirred evenly; then 2.0 kg (dry basis) of light magnesium oxide and 4.5 kg of decationized water were added, beaten, and stirred evenly to obtain a slurry with a solid content of 11.5% by weight. The resulting slurry was spray-dried at an inlet temperature of 500°C and an exhaust gas temperature of 180°C, and then calcined at 650°C for 2 hours to obtain magnesium-aluminum spinel-containing composite microspheres ZT with an average particle diameter of 60 microns 1 . ZT 1 The composition, specific su...

Embodiment 2

[0059] This example illustrates the composition of spinels containing alkaline earth metals and aluminum and their preparation.

[0060] In a stirred kettle, add 20.2 kilograms of decationized water, add 2.44 kilograms (dry basis) of pseudoboehmite and 0.655 liters of chlorinated mixed rare earth solution under stirring, then add the hydrochloric acid that concentration is 18% by weight, stir evenly, hydrochloric acid The amount used is such that the pH of the slurry is 1.65. Continue adding 1 liter of V as described in Example 1 2 o 5 - Stir the oxalic acid complex solution evenly, continue to add 1.4 kg of light magnesium oxide (dry basis) and 3.18 kg of decationized water to make a slurry, stir evenly, and obtain a slurry with a solid content of 11.5% by weight. The resulting slurry was spray-dried at an inlet temperature of 500°C and an exhaust gas temperature of 180°C, and then calcined at 650°C for 2 hours to obtain magnesium-aluminum spinel-containing composite micros...

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Abstract

A petroleum absorption desulfurization and spraytex catalysis cracking combination technology includes: under the absorption desulfurization condition, the petroleum contained sulfur is contacted withdesulfurization agent in a absorbing reactor (6); under the catalysis cracking condition, the spraytex contained sulfur is contacted with the cracking catalysis agent in a cracking reactor (4). The present invention is characterized in that the technology includes the steps that the desulfurization agent after being contacted is mixed with the cracking catalysis agent after being contacted, the mixture is contacted with the atmosphere contained oxygen to regenerate in a regenerator (5), after regeneration, the mixture can enters into the cracking reactor (4); the regeneration temperature wherein is 600 to 800 DEG C, the total weight of mixture is used as the basic standard, the mixing enables the content of desulfurization agent in the mixture is 0.5 to 25 weight ratio. The method can beused in reducing the sulfur content in the catalysis and cracking petroleum.

Description

technical field [0001] The invention relates to a combined process of gasoline adsorption desulfurization and hydrocarbon oil catalytic cracking. Background technique [0002] In recent years, due to environmental protection considerations, the restrictions on the sulfur content in vehicle fuels have been increasingly stringent around the world. China's gasoline products are mainly composed of FCC gasoline, and 90% of the sulfur content of finished gasoline comes from FCC gasoline. Therefore, reducing the sulfur content of FCC gasoline is one of the key links in the production of clean gasoline. [0003] One way to reduce the sulfur content in gasoline is to use adsorbents to adsorb and desulfurize gasoline. The method has the advantages of less investment and no environmental pollution. However, it is generally required that the adsorbent must have high adsorption selectivity and good regeneration performance. [0004] In USP4,592,829, an inorganic refractory material lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/06
Inventor 蒋文斌龙军朱玉霞陈蓓艳宋海涛徐志成沈宁元范玉华
Owner CHINA PETROLEUM & CHEM CORP