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A method for efficiently removing nitrogen compounds in oil products

A technology for nitrogen compounds and oil products, which is applied in the field of removing nitrogen compounds in oil products by using polysulfonate ionic liquid, can solve the problems of limited nitrogen compound removal capacity, difficulty in non-basic nitrogen removal, and high agent-oil ratio. Achieve mild reaction conditions, high acid density, and small agent-oil ratio.

Active Publication Date: 2019-08-16
浙江普泽环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the high solvent-to-oil ratio, high cost, difficulty in removing non-basic nitrogen in oil, and limited ability to remove nitrogen in actual oil in conventional ionic liquids, etc. Problem, the present invention discloses a method for removing nitrogen compounds in oil products by using polysulfonate ionic liquid, which can efficiently transform and remove nitrogen compounds in oil products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Preparation of ionic liquid:

[0029] a) After mixing 1,4-butane sultone and triphenylphosphine in a molar ratio of 1:1, place it in a microwave reactor, and set it at 90 o After C reacted for 30 minutes, carry out vacuum filtration and wash with anhydrous acetone for 2 times, carry out vacuum drying to obtain substance M;

[0030] b) Mix substance M and 98wt% concentrated sulfuric acid at room temperature in a molar amount of 1:4, put it into a microwave reactor, and heat it at 120 o The reaction was carried out under the condition of C for 30 min, and then the polysulfonate ionic liquid was obtained by vacuum filtration, washing with anhydrous acetone for 2 to 3 times, and vacuum drying.

[0031] Put 1g of ionic liquid sample into a glass reactor with magnetic stirring, and then add 400mL of quinoline simulated oil with a nitrogen content of 250mg / L, stir and react at room temperature for 20min, settle for 30min and absorb the upper layer Use TNS-3000 nitrogen an...

Embodiment 2

[0033] 1) Preparation of ionic liquid:

[0034] a) Mix 1,4-butane sultone and triphenylphosphine in a molar ratio of 1:1 and place it in a microwave reactor. o After C was reacted for 2 hours, it was then vacuum-filtered and washed with anhydrous acetone for 3 times, then vacuum-dried to obtain substance M;

[0035] b) Mix substance M and 98wt% concentrated sulfuric acid at a molar ratio of 1:4 at room temperature, put it into a microwave reactor, and heat it at 120 o The reaction was carried out under the condition of C for 30 min, and then vacuum filtration was carried out, washed with anhydrous acetone for 2 to 3 times, and then vacuum-dried to obtain the polysulfonate ionic liquid.

[0036] Put 1g of ionic liquid sample into a glass reactor with magnetic stirring, and then add 400mL of pyridine simulated oil with a nitrogen content of 250mg / L to it, stir and react at room temperature for 30min, and absorb the upper layer of oil after static settlement for 30min Use TNS-3...

Embodiment 3

[0038] 1) Preparation of ionic liquid

[0039] 1) Mix 1,4-butane sultone and triphenylphosphine in a molar ratio of 1:1 and place it in a microwave reactor. o After C reacted for 80 hours, carry out vacuum filtration and wash with anhydrous acetone, and carry out vacuum drying to obtain substance M;

[0040] 2) Mix substance M with 98wt% concentrated sulfuric acid at room temperature in a molar ratio of 1:4, put it into a microwave reactor, and heat it at 120 o The reaction was carried out under the condition of C for 30 min, and then vacuum filtration was carried out, washed with anhydrous acetone for 2 to 3 times, and then vacuum-dried to obtain the polysulfonate ionic liquid.

[0041] Put 1g of ionic liquid sample into a glass reactor with magnetic stirring, then add 400mL simulated oil of quinoline and pyridine mixture with a nitrogen content of 250mg / L, stir and react at room temperature for 25min, and settle After 30 minutes, absorb the upper layer of oil and use TNS-3...

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PUM

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Abstract

The invention discloses a method for removing nitride in an oil product by utilizing polysulfonate ion liquid. The method comprises the following steps of adding the polysulfonate ion liquid into theoil product so as to enable non-alkaline nitride in the oil product to be subjected to protonated removal, and enabling alkaline nitride in the oil product to be subjected to sulfonation removal. Theion liquid disclosed by the invention is used for conversion removal of the nitride in the oil product and has relatively high removal efficiency, one the one hand, the strong acidity of the ion liquid can be used for protonizing the non-alkaline nitride represented by indol and further react to generate an oligomer for the conversion removal; on the other hand, the alkaline nitride represented bypyridine can be subjected to sulfonation to be converted into 3-pyridine sulfoacid for removal; a thiophene sulfur containing compound in the oil product and an olefin compound can generate alkylation as well, thereby greatly reducing interference caused by the sulfur containing compound in the denitrification process.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry and relates to a method for removing nitrogen oxides in oil products, in particular to a method for removing nitrogen oxides in oil products by using polysulfonate ion liquid. Background technique [0002] With the rapid development of my country's economy, the consumption of the three major fossil fuels, coal, oil and natural gas, is gradually increasing. Among them, petroleum products, which are the main fuel for transportation, create a large amount of economic value. Pollution is also becoming more and more serious. With the increasing pressure of environmental protection, more stringent requirements are put forward for the clean production of fuel oil. [0003] The removal of nitrogen compounds in oil is a major problem in the clean production of fuel oil. Conventional methods for removing nitrogen compounds include hydrodenitrogenation and non-hydrogenation denitrogenation. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/20
Inventor 李俊霞
Owner 浙江普泽环保科技有限公司
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