Method for separating n-alkanes in gasoline to improve octane number of gasoline

A gasoline octane number and gasoline technology, which is applied in the field of separating n-alkanes in gasoline to increase gasoline octane number, can solve the problems of inability to separate n-alkanes, low distillation range and low octane number of catalytic cracking gasoline, and achieve environmental friendliness , Simple equipment, stable separation process

Active Publication Date: 2018-03-09
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low octane number of n-paraffins (n-heptane RON=0, and the RON of n-alkanes above C7 is a negative number), the n-paraffins with low octane number can be separated by complexing agent and n-alkanes in gasol

Method used

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  • Method for separating n-alkanes in gasoline to improve octane number of gasoline
  • Method for separating n-alkanes in gasoline to improve octane number of gasoline
  • Method for separating n-alkanes in gasoline to improve octane number of gasoline

Examples

Experimental program
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Example Embodiment

[0041] Example 1,

[0042] press figure 1 The process shown is to purify and recover FCC gasoline, cut 100kg / h FCC gasoline 101 into 50kg light component oil 102 and 50kg heavy component oil 103 at 100℃ in step 1; add heavy component oil 103 to 50kg in step 2 / h urea and thiourea (urea: thiourea = 1:1, mass ratio) in anhydrous ethanol solution, gradually reduce the temperature to -10 ℃ and stir to obtain a suspension 104; the suspension 104 is vacuum filtered 3 to obtain a solid phase The product 105 and the liquid product 110; the solid phase product 105 is dissolved by adding water in step 4 to obtain the oil phase product 106 and the cleaning water 107, the quality of the added water is 100-150 kg / h; the cleaning water 107 can be separated to obtain the complexing agent and water; The oil phase product 106 is further washed with water in step 5, and the quality of the water is 100-150kg / h to obtain the oil phase product 108 (that is, the removed normal alkanes) and cleaning w...

Example Embodiment

[0047] Example 2,

[0048] press figure 1 The process shown is to purify and recover FCC gasoline. After step 1, 100kg / h FCC gasoline 101 is cut into light component oil 102 and heavy component oil 103 at 70°C; and heavy component oil 103 is added to urea and sulfur through step 2. In a saturated ethanol solution of urea (urea:thiourea=1:1, mass ratio), the mass ratio of the total mass of urea and thiourea to the heavy component oil 103 is 1:1, and the temperature is gradually reduced to -10°C and stirred to obtain a suspension The turbid liquid 104; the suspension 104 is vacuum filtered 3 to obtain the solid phase product 105 and the liquid phase product 110; the solid phase product 105 is dissolved by adding water in step 4 to obtain the oil phase product 106 and the cleaning water 107, the quality of the added water is 100-150kg / h; the cleaning water 107 can be separated to obtain the complexing agent and water; the oil phase product 106 is further washed with water in step ...

Example Embodiment

[0052] Example 3.

[0053] press figure 1 The process shown is to purify and recover FCC gasoline. After step 1, 100kg / h FCC gasoline 101 is cut into light component oil 102 and heavy component oil 103 at 100°C; heavy component oil 103 is added to urea and shrinkage through step 2. In a saturated ethanol solution of diurea (urea: biuret = 1:1, mass ratio), the mass ratio of the total mass of urea and biuret to the heavy component oil 103 is 1:1, gradually reduce the temperature to 0℃ and stir Obtain the suspension 104; the suspension 104 is vacuum filtered 3 to obtain the solid phase product 105 and the liquid phase product 110; the solid phase product 105 is dissolved by adding water in step 4 to obtain the oil phase product 106 and washing water 107, the quality of the added water is 100 ~150kg / h; the cleaning water 107 can be separated to obtain urea and water; the oil phase product 106 is further washed with water in step 5, and the water quality is 100~150kg / h to obtain the...

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Abstract

The invention discloses a method for separating n-alkanes in gasoline to improve an octane number of the gasoline. The method comprises the following steps: the gasoline is separated into light component oil and heavy component oil through light-heavy component separation; the heavy component oil and a complexing agent solution are mixed for a complexation reaction, and a liquid-phase product anda solid-phase product are obtained through filtration; the liquid-phase product is washed with water to obtain an oil-phase product; and the light component oil and the oil-phase product are mixed toobtain product oil, so that the octane number of the gasoline is improved. The method provided by the invention adopts a mixture of urea and one selected from thiourea, biuret and biurea as a complexing agent to complex and separate the n-alkanes in the gasoline, and the effects are significantly improved compared with those of a current method for complexing and separating the n-alkanes by individually adopting the urea; in the method provided by the invention, the complexing agent and the n-alkanes are subjected to the complexation reaction at a room temperature or less, thereby facilitatingimproving the separation effects of the n-alkanes; and the method is not only suitable for the catalytic cracking gasoline, but also suitable for the separation process of other gasoline, straight-run diesel oil, isomerized diesel oil, and a composition of other normal and isohydrocarbons containing components of n-alkanes with 6 or more carbons.

Description

technical field [0001] The invention relates to a method for increasing the octane number of gasoline, in particular to a method for separating normal alkanes in gasoline and increasing the octane number of gasoline. Background technique [0002] The gasoline octane number is a numerical index to measure the anti-knock combustion ability of gasoline in the cylinder, and a high value indicates good anti-knock performance. At present, the method of increasing the octane number generally adopts secondary processing technology, such as hydroreforming, isomerization, alkylation, etherification, etc. to improve the grade of gasoline. If the octane number still does not meet the standard after secondary processing, it can The octane number of gasoline is increased by adding gasoline antiknock agents. Conventional additives are Mn gasoline antiknock agents such as MMT, CMT, and NMT, but the maximum RON is increased by 2 to 2.8 units, or by blending high-octane number components (suc...

Claims

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Application Information

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IPC IPC(8): C10G29/20
CPCC10G29/205C10G2300/305
Inventor 耿春宇郝栩陶智超高军虎李莹杨勇李永旺
Owner SYNFUELS CHINA TECH CO LTD
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