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Pretreatment method for photocatalyst for cyclohexane decomposing in oil field station

A photocatalyst, cyclohexane technology, applied in separation methods, chemical instruments and methods, catalyst activation/preparation, etc., can solve the lack of direct and effective treatment of decomposition of cyclohexane, the inability to achieve real-time monitoring, There are no problems such as treatment of cyclohexane gas, so as to improve the photocatalyst activity and the degradation rate of cyclohexane, improve the photon efficiency, and improve the adsorption effect.

Active Publication Date: 2020-09-29
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, cyclohexane gas is not treated in outdoor spaces such as oil gathering stations and combined station pump rooms. First, on-site personnel cannot monitor the emission of cyclohexane in outdoor spaces in real time. Second, there is no direct and effective treatment of the decomposition environment on site. means of hexane

Method used

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  • Pretreatment method for photocatalyst for cyclohexane decomposing in oil field station
  • Pretreatment method for photocatalyst for cyclohexane decomposing in oil field station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Titanium dioxide catalyst product preparation:

[0032] 10 g of titanium dioxide in a mixed phase of anatase crystal and rutile crystal with an average particle size of basic particles of about 21 nm is selected, and the weight ratio of anatase and rutile is about 71 / 29. Put the selected mixed-phase titanium dioxide into a muffle furnace, bake it at 415°C for 1.5h, put it into a desiccator to cool naturally, and set it aside.

[0033] Magnetically stir 10 g of the mixed-phase titanium dioxide treated in the first step in 10 ml of 1 mol / L sulfuric acid for 1 h, and set aside.

[0034] 10g of the mixed titanium dioxide treated in the second step was irradiated in a 650w, 2400Hz microwave oven for 4 minutes, cooled, and set aside.

[0035] Magnetically stir 10g of mixed titanium dioxide treated in the third step in 10ml of 0.5mol / L sulfuric acid for 1h, take it out, put it in a muffle furnace, bake it at 300°C for 1h, put it in a desiccator and cool it down naturally.

Embodiment 2

[0037] Titanium dioxide catalyst product preparation:

[0038] (1) Select 100 g of titanium dioxide in a mixed phase of anatase crystal and rutile crystal with an average particle diameter of about 18 nm as the basic particle, and the weight ratio of anatase and rutile is about 71 / 29. Put the selected mixed-phase titanium dioxide into a muffle furnace, bake it at 410°C for 1 hour, put it into a desiccator to cool naturally, and set it aside.

[0039] (2) Magnetically stir 100 g of the mixed-phase titanium dioxide treated in the first step in 100 ml of 1 mol / L sulfuric acid for 1 h, and set aside.

[0040] (3) 100 g of the mixed titanium dioxide treated in the second step was irradiated with 640w and 2300 Hz microwave for 3 minutes, cooled and set aside.

[0041] (4) Magnetically stir 100g of the mixed titanium dioxide treated in the third step in 100ml of 0.5mol / L sulfuric acid for 1h, take it out, put it in a muffle furnace, bake it at 300°C for 0.5h, and put it in a desicca...

Embodiment 3

[0043] Titanium dioxide catalyst product preparation:

[0044] (1) Select 100 g of titanium dioxide in a mixed phase of anatase crystal and rutile crystal with an average particle diameter of about 25 nm as the basic particle, and the weight ratio of anatase and rutile is about 71 / 29. Put the selected mixed-phase titanium dioxide into a muffle furnace, bake it at 420°C for 2h, put it into a desiccator to cool naturally, and set it aside.

[0045] (2) Magnetically stir 100 g of the mixed-phase titanium dioxide treated in the first step in 100 ml of 1 mol / L sulfuric acid for 1 h, and set aside.

[0046] (3) 100 g of the mixed titanium dioxide treated in the second step was irradiated with 660w and 2500 Hz microwave for 5 minutes, cooled and set aside.

[0047] (4) Magnetically stir 100 g of the mixed titanium dioxide treated in the third step in 100 ml of 0.5 mol / L sulfuric acid for 1 h, take it out, put it in a muffle furnace, bake it at 310 ° C for 2 h, and put it in a desicc...

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Abstract

The invention discloses a pretreatment method for a photocatalyst for cyclohexane decomposing in an oil field station. The method includes weighing anatase crystal-rutile crystal mixed-phase titaniumdioxide, roasting for 1-2 hours for the first time at the temperature of 410-420 DEG C, and then naturally cooling in a dryer to obtain treated titanium dioxide; carrying out primary magnetic stirringtreatment on the treated titanium dioxide in sulfuric acid; carrying out microwave radiation treatment on the titanium dioxide subjected to sulfuric acid treatment for 3-5 minutes at the power of 640-660 w and the frequency of 2300-2500 Hz; and magnetically stirring the titanium dioxide subjected to microwave radiation treatment in sulfuric acid for the second time, taking out the titanium dioxide, roasting the titanium dioxide at 300-310 DEG C for 0.5-2 hours for the second time, and drying the titanium dioxide. According to the method, the pretreated titanium dioxide catalyst for decomposing cyclohexane can be effectively treated by utilizing a photocatalysis mechanism, so that the effects of improving the activity of the photocatalyst and the degradation rate of cyclohexane and prolonging the service lifetime of the photocatalyst are achieved, and further stable final products, namely carbon dioxide and water, are generated.

Description

technical field [0001] The invention relates to the technical field of oil field crude oil storage and transportation, in particular to a method for degrading cyclohexane, a volatile organic compound in the outdoor space, which is used in the outdoor space of oil gathering stations and joint stations in oil fields, specifically a method for decomposing cyclohexane in oil field stations Pretreatment method of cyclohexane photocatalyst. Background technique [0002] The gas in the outdoor space of oil gathering stations and combined stations in oil fields contains cyclohexane and other gases. The specific reason is that crude oil contains cyclohexane and other gases, which escape and volatilize through pumps, valves, flanges and other links, especially in contact with the atmosphere. Cyclohexane escapes from crude oil storage tanks, and a certain concentration of cyclohexane will harm the health of on-site workers. [0003] At present, cyclohexane gas has not been treated in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/08B01J37/34B01J21/06B01J37/00B01D53/86B01D53/72
CPCB01J37/08B01J37/346B01J21/063B01J37/00B01J35/39
Inventor 邱奇张海玲周娟刘汉斌周立辉穆谦益冀忠伦刘沛华杨琴朱妍
Owner PETROCHINA CO LTD
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