A method for separating and refining non-basic nitrogen-containing compounds in petroleum fractions
A technology for petroleum fractions and nitrogen compounds, which is applied in the petroleum industry, multi-stage series refining process treatment, hydrocarbon oil treatment, etc., and can solve the problem of inability to separate non-basic nitrogen compounds in batches.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0034] The raw material oil is the extracted oil of transformer oil produced by the refinery, with a nitrogen content of 390 μg / g, a basic nitrogen content of 125 μg / g, and a sulfur content of 420 μg / g. Take 1000g of the raw oil sample, add 30g of phosphoric acid, stir at 50°C for 20 minutes, stop stirring, settle for 60 minutes, and divide into upper and lower layers. The upper layer oil is analyzed for its basic nitrogen content of 0.5 μg / g, indicating that the basic nitrogen content of the oil is 0.5 μg / g. Nitrogen has essentially been removed. Then pour out the upper layer of oil, be careful not to pour out the lower layer, then add 30g of tin tetrachloride, stir for 30 minutes, let stand for 200 minutes to separate the layers, use a separatory funnel to separate the lower layer, add petroleum ether at 60-90°C (analytical pure) 30ml, wash twice, separate the lower layer, then add petroleum ether 30ml, then add 15% NaOH solution 150ml, at this time the pH of the solution is...
Embodiment 2
[0036] Take 1000g of hydrogenated shale oil, its total nitrogen content is 12600mg L -1 , non-basic nitrogen content 7100mg·L -1 , dilute 4 times with petroleum ether, first add the WLDN denitrification agent developed by China University of Petroleum (East China) to remove the basic nitrogen compounds, the addition amount is 10% of the quality of hydrogenated shale oil, stir for 30 minutes, and the temperature 50°C, stop stirring and settling for 60 minutes after the reaction, divide into upper and lower layers, pour out the upper layer, and then add 150g of analytically pure SnCl to the separated upper layer oil 4, stirred and reacted for 30 minutes, the reaction temperature was controlled at 50°C, then stopped stirring, and settled and separated for 200 minutes. The solution was divided into upper and lower layers, and the lower layer was separated. Add 200ml of petroleum ether to the complex, wash, separate the petroleum ether, and repeat the washing once to obtain the wa...
Embodiment 3
[0042] Take vacuum distillate oil 1000g, its total nitrogen content is 875mg L -1 , non-basic nitrogen content 302mg·L -1 , sulfur content 580mg·L -1 , first add the WLDN denitrification agent developed by China University of Petroleum (East China) to remove the basic nitrogen compounds, the amount added is 2% of the quality of the vacuum distillate oil, and the reaction is stirred for 30 minutes at a temperature of 90 ° C. After the reaction, stop stirring and settling 120 minutes, divided into upper and lower layers, the basic nitrogen content in the upper layer oil is 1.6mg·L -1 , pour out the upper layer oil, then add 10g of analytically pure TiCl to the separated upper layer oil 4 , stirred and reacted for 60 minutes, the reaction temperature was controlled at 50°C, then stopped stirring, settled and separated for 200 minutes, the solution was divided into upper and lower layers, and the lower layer was separated. At this time, the non-basic nitrogen removal rate reache...
PUM
| Property | Measurement | Unit |
|---|---|---|
| boiling point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More