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A kind of hydrodesulfurization method of distillate oil

A technology for hydrodesulfurization and distillate oil, which is applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. It can solve the problem of liquid product yield decline and high catalyst cracking activity , can not achieve deep desulfurization and other problems, to achieve high specific surface area, improve the effect of utilization

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the acidity of the hydrodesulfurization catalyst is too weak, deep desulfurization cannot be achieved; if the acidity is too strong, the cracking activity of the catalyst is too high, which will cause a decrease in the yield of liquid products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of Mo-Ni-P aqueous solution:

[0034] 3.7 g phosphoric acid H 3 PO 4 (Concentration: 85wt%) was dissolved in 97 mL of water, then 10 g of molybdenum trioxide and 3.4 g of basic nickel carbonate were added, the temperature was raised to 100 °C, stirred and refluxed for 0.5 h, and the Mo-Ni-P aqueous solution was obtained by filtration. where MoO 3 The concentration of NiO was 0.1 g / mL, that of NiO was 0.02 g / mL, and that of P was 0.01 g / mL.

[0035] (2) Preparation of Hydrodesulfurization Catalyst A:

[0036] Add 3.2 mL of cesium carbonate aqueous solution with a concentration of 0.1 g / mL into 3.74 g of silicotungstic acid aqueous solution, stir well, add 100 mL of Mo-Ni-P solution and stir evenly, then add 248 g of template agent hexadecyltrimethyl bromide Ammonium chloride and 143 g of citric acid were stirred evenly, then 305 mL of ethyl orthosilicate was added, stirred at room temperature for 8.0 h, then heated to 70 °C, and continued to stir unti...

Embodiment 2

[0040] Select the catalysts A and B in Example 1 and mix them in a volume ratio of 4:1. After a total of 20 mL of catalysts are loaded into the isothermal section in the middle of the reaction tube, hydrogen gas is introduced, and the pressure of the reaction system is gradually increased to 2.0 MPa. After checking that there is no air leakage , the temperature of the reaction system was raised to 320 ℃, with 2wt % CS 2 The cyclohexane solution was presulfurized for 2 h, and then the reaction temperature was lowered to 280 °C, and the model reactant was cut into the cyclohexane solution containing 5 wt% thiophene and 0.8 wt% dibenzothiophene, and samples were collected after 1 h of reaction. The reaction operating conditions are: pressure 2 MPa, liquid volume space velocity 2 h -1 , the volume ratio of hydrogen to reaction feed is 600, the injection volume of reaction raw material is 40 mL / h, and the flow rate of hydrogen is 40 mL / min. The hydrodesulfurization activity of the...

Embodiment 3

[0042] In Example 2, catalysts A and B in Example 1 were selected to be mixed in a volume ratio of 3:1, and other test conditions were unchanged. The evaluation results are shown in Table 2.

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Abstract

The invention discloses a distillate oil hydro-desulfurization method. The method comprises the following steps: using a fixed-bed hydro-treatment reactor, making the raw oil and hydrogen gas enter the reactor from the upper part of the reactor, making the raw oil and hydrogen gas contact a hydro-desulfurization catalyst so as to carry out a hydro-desulfurization reaction under a proper hydro-desulfurization reaction condition, and discharging the materials from the lower part of the reactor after the hydro-desulfurization reaction, wherein in the hydro-desulfurization catalyst, Mo and Ni and / or Co are taken as the active metal component, and P is taken as the auxiliary agent. The catalyst also comprises heteropoly alkali metal salt, and has the advantages of high specific surface area, large pore volume, and large pore diameter. The active metal component can better cooperate with the heteropoly salt, moreover at least two catalysts are adopted and matched in a grading mode, and thus the goals of deep desulfurization and high fluid yield are achieved at the same time.

Description

technical field [0001] The invention relates to a method for hydrodesulfurization of distillate oil, in particular to a method for hydrodesulfurization of light distillate oil using a combined catalyst. Background technique [0002] As we all know, air pollution is a serious environmental problem, and a large number of engine emissions are one of the important causes of air pollution. In recent years, with the sharp increase in the use of motor vehicles, the exhaust emissions are increasing, and the combustion products of sulfide in fuel oil are the main harmful substances that cause acid rain. On the other hand, with the improvement of living standards, people's requirements for environmental quality are also getting higher and higher. Therefore, people have increasingly strict requirements on the quality of petroleum fuels, and countries all over the world have formulated strict fuel standards. Europe implemented the Euro III standard in 2000, stipulating that the sulfur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/16B01J31/18C10G45/08
Inventor 金浩孙素华朱慧红刘杰杨光
Owner CHINA PETROLEUM & CHEM CORP
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