Light-end products oxidation desulfurizing and deodorizing method

A light oil product, oxidative deodorization technology, applied in the direction of refining with oxygen-containing compounds, etc., can solve the problems of increasing the cost of the treatment process, failing to reduce the total sulfur of oil products, waste alkali discharge, etc.

Active Publication Date: 2007-10-31
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, due to the use of inorganic alkali, waste alkali will inevitably be discharged, causing environmental pollution. In addition, because the reaction is carried out between the oil-alkali two phases, the removal of mercaptan is only between 50% and 70%, and it cannot be reduced. total sulfur in oil
[0005] Although Frame proposes an improved scheme of using ammonia water to replace caustic alkali in USP 5093296, there is still the addition of inorganic weak base in the process, and expensive activators need to be added, which increases the cost of the treatment process
The process also does not reduce the total sulfur in the oil
[0006] Chinese patent CN85103718 has provided a kind of scheme of non-alkali deodorization of light oil product, in the fixed bed deodorization process of sulfonated phthalocyanine cobalt as catalyst, with a kind of organic base (quaternary amine) that can be dissolved with deodorized oil Alkali) instead of caustic soda participates in the oxidation deodorization reaction under the condition that cosolvent exists, has avoided the discharge problem of waste lye, has made remarkable progress, but this process also has the following deficiencies, one is that the activation of the catalyst still needs lye treatment , the second is that expensive quaternary amine bases and co-solvents need to be added, and the third is that this process cannot reduce the total sulfur of oil products

Method used

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  • Light-end products oxidation desulfurizing and deodorizing method
  • Light-end products oxidation desulfurizing and deodorizing method
  • Light-end products oxidation desulfurizing and deodorizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0038] This example proves that the use of reaction equipment with high mass transfer efficiency can significantly improve the desulfurization efficiency. Experimental process and experimental raw material are the same as comparative examples 1~3, just react and carry out in the impingement flow reactor identical with Fig. 2 structure, adopt two propellers, propeller rotating speed is 900 rev / mins, intermittent operation, reaction temperature drops to 50°C. The reaction time was reduced to 30 minutes. The reaction raw material oils of Examples 1-3 correspond to Comparative Examples 1-3 respectively. The mercaptan sulfur content and total sulfur analysis data of the reaction products are also listed in Table 1.

[0039] example

[0040] Apparently, under the same raw materials and other reaction conditions, the use of an impingement flow reactor with higher mass transfer efficiency can significantly increase the desulfurization rate of the oxidation reaction, and th...

Embodiment 4

[0042] Example 4 According to the process of Example 2, the reaction temperature is 50° C., the reaction time is 30 minutes, the catalyst uses oil-soluble copper porphyrin, and the concentration of the catalyst in mineral spirits is 0.5 μg / g. The results are shown in Table 2.

Embodiment 5

[0044] Example 5 According to the process of Example 2, the reaction temperature is 40°C, the reaction time is 30 minutes, the catalyst is oil-soluble porline cobalt, the concentration of the catalyst in solvent oil is 0.05 μg / g, and the amount of hydrogen peroxide added is the theoretical requirement 2.5 times the amount, the results are shown in Table 2. Compared with Comparative Example 1, to achieve similar desulfurization rate, impinging flow reactor requires less oxidant amount and lower reaction temperature.

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Abstract

The invention discloses an oxidation deodorizing and desulfurizing method of light-end products, which comprises the following steps: reacting light-end products and hydrogen dioxide solution in high effect mass transfer reactor such as knock current reactor with intensified turbulence inner component under existence of homogeneous catalyst; mixing evenly and completely in short time; proceeding effective bump quick-speed generating reaction; getting good reacting effect. This technique can eject sulfur-containing compound and bad odor substance of light-end products without discharging waste lye or waste slag, which can get high grade dissolvent oil raw material.

Description

technical field [0001] The invention relates to a method for oxidative desulfurization and deodorization of light oil products, which is characterized in that when it is applied to deodorization of light oil products, it can not only remove the malodorous substance mercaptan sulfur in the oil products, but also reduce the total sulfur in the oil products, Improve the performance of light oil products. Background technique [0002] Petroleum contains quite a lot of non-hydrocarbon compounds, and sulfur compounds are one of them. Organic sulfides in petroleum products such as active sulfides (mercaptans) are very corrosive, and inactive sulfides (disulfides, sulfides, and thiophenes, etc.) will form highly corrosive products during combustion, and Cause air pollution to form acid rain, mercaptans, disulfides and sulfides in light oil products have a great influence on the lead sensitivity of gasoline. In order to meet the needs of environmental protection and meet the qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G27/12
Inventor 王海波黎元生勾连科张淑梅宋丽芝艾抚宾
Owner CHINA PETROLEUM & CHEM CORP
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