Method for simulating pyridine in gasoline through pervaporation membrane separation

A pervaporation membrane and pervaporation technology, which is applied in the field of pervaporation membrane separation, can solve the problems of high investment cost, high energy consumption, and environmental pollution, and achieve the effects of guaranteed yield, low energy consumption, and no environmental pollution

Inactive Publication Date: 2016-07-20
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a method for removing pyridine from nitrogen-containing simulated gasoline by perva

Method used

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  • Method for simulating pyridine in gasoline through pervaporation membrane separation

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Example Embodiment

[0029] Example 1

[0030] Method for separating pyridine in simulated gasoline by pervaporation membrane

[0031] Set the pyridine concentration to 500μg·g -1 The nitrogen-containing simulated gasoline is placed in the feed liquid tank 2, and is preheated by the feed liquid preheating device 1. The preheating temperature is 30°C, and the pyridine concentration is 500 μg·g -1 The nitrogen-containing simulated gasoline is transported from the feed liquid tank 2 to the pervaporation membrane separator 4 by the feed liquid circulation pump 3, and is selectively permeated through the pervaporation separation membrane 5. The permeated gas enters the permeate tank 6, and is condensed by the sample condensation system 7. After analysis, the non-permeated liquid is circulated back into the liquid tank through the liquid circulation pump 3, and the permeate side of the pervaporation membrane separator is kept at a low pressure by the vacuum pump 10. The permeate side of the pervaporation mem...

Example Embodiment

[0032] Example 2

[0033] Method for separating pyridine in simulated gasoline by pervaporation membrane

[0034] Set the pyridine concentration to 2000μg·g -1 The nitrogen-containing simulated gasoline is placed in the feed liquid tank 2, and is preheated by the feed liquid preheating device 1. The preheating temperature is 30℃, and the pyridine concentration is 2000μg·g -1 The nitrogen-containing simulated gasoline is transported from the feed liquid tank 2 by the feed liquid circulation pump 3 to the pervaporation membrane separator 4, and is selectively permeated through the pervaporation separation membrane 5. The permeate gas enters the permeate tank 6, and is condensed by the sample condensation system 7. After analysis, the non-permeated liquid is circulated back into the material liquid tank through the material liquid circulation pump 3, and the permeate side of the pervaporation membrane separator is kept at a low pressure by the vacuum pump 10. The permeate side of the ...

Example Embodiment

[0035] Example 3

[0036] Method for separating pyridine in simulated gasoline by pervaporation membrane

[0037] Set the pyridine concentration to 5000μg·g -1 The nitrogen-containing simulated gasoline is placed in the feed liquid tank 2, and is preheated by the feed liquid preheating device 1. The preheating temperature is 30℃, and the pyridine concentration is 5000μg·g -1 The nitrogen-containing simulated gasoline is transported from the feed liquid tank 2 by the feed liquid circulation pump 3 to the pervaporation membrane separator 4, and is selectively permeated through the pervaporation separation membrane 5. The permeate gas enters the permeate tank 6, and is condensed by the sample condensation system 7. After analysis, the non-permeated liquid is circulated back into the material liquid tank through the material liquid circulation pump 3, and the permeate side of the pervaporation membrane separator is kept at a low pressure by the vacuum pump 10. The permeate side of the ...

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Abstract

The invention relates to a method for simulating pyridine in gasoline through pervaporation membrane separation, comprising the following specific steps: preparing n-heptane and pyridine into nitrogen-bearing simulation gasoline of certain concentration, and placing in a liquid tank; preheating the nitrogen-bearing simulation gasoline in the liquid tank by a liquid preheater, conveying to a pervaporation membrane separator by a liquid circulating pump, connecting the permeation side of the pervaporation membrane separator with a vacuum pump, charging permeating gas in a liquid nitrogen condensation collection cylinder, condensing it into liquid, and performing component analysis by gas chromatography; acquiring penetrant with high pyridine content from the permeation side of the pervaporation membrane separator, and acquiringresident liquid with low pyridine content from the interception side of the pervaporation membrane separator. The method has the advantages that the process is simple, operating is convenient, energy consumption is low, no pollution is caused to products and environment, and both environmental protection and economic benefits are achieved.

Description

technical field [0001] The invention relates to the field of pervaporation membrane separation, in particular to a method for pervaporation membrane separation of pyridine in simulated gasoline. Background technique [0002] Petroleum products contain two types of nitrides: basic nitrides and non-basic nitrides. Basic nitrogen compounds mainly refer to pyridine, quinoline, isoquinoline, azaphenanthrene, azaanthracene, etc. and their homologues, while non-basic nitrogen compounds mainly refer to pyrrole, carbazole, indole, etc. and their homologues . Low sulfur and high nitrogen is one of the characteristics of crude oil in my country, and nitrogen compounds are more harmful than sulfides, which will not only pollute the environment, but also seriously affect the use and storage of oil products. [0003] First of all, even a very small amount of nitrogen compounds (especially basic nitrogen compounds) in oil products will poison the precious metal catalysts in the productio...

Claims

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Application Information

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IPC IPC(8): C10G31/11
CPCC10G31/11C10G2300/202C10G2400/02
Inventor 刘琨付夏娜
Owner GUANGXI UNIV
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