Resin ball capable of preferential adsorption of aromatic hydrocarbon component of hydrocarbon mixture, and preparation method thereof

A technology for hydrocarbon mixtures and resin balls, which is applied in the field of resin balls that can selectively adsorb aromatic components in hydrocarbon mixtures and its preparation, and can solve the problem of small adsorption capacity of adsorbents and the inability to use solvent oils with high aromatic content, etc. problems, to achieve the effect of simple operation, cost reduction and favorable process

Inactive Publication Date: 2012-02-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption method is a method of separating aromatics and non-aromatics with polar adsorbents (such as silica gel, zeolit...

Method used

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  • Resin ball capable of preferential adsorption of aromatic hydrocarbon component of hydrocarbon mixture, and preparation method thereof
  • Resin ball capable of preferential adsorption of aromatic hydrocarbon component of hydrocarbon mixture, and preparation method thereof
  • Resin ball capable of preferential adsorption of aromatic hydrocarbon component of hydrocarbon mixture, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: the synthesis of SDPDMA

[0054] Add 5.01g (20mmol) of SDP, 5.56mL (40mmol) of triethylamine and 20mL of dimethylformamide into a 100mL two-necked flask, mix well and place in an ice-salt bath, slowly dropwise add 5.81 A mixture of mL (60mmol) methacryloyl chloride and 25mL dimethylformamide. After the dropping, the solid was filtered out, and the obtained filtrate was dropped into 500 mL of distilled water drop by drop, and the precipitate was precipitated by stirring. After suction filtration, it was dried in a vacuum oven at room temperature to obtain a crude product, which was separated and purified by column chromatography.

[0055] 1 H NMR (500MHz, CDCl 3 , TMS): δ (ppm) 7.98 (4H, d, -Ph), 7.28 (4H, d, -Ph), 6.35 (2H, s, =CH 2 ), 5.80 (2H, s, = CH 2 ), 2.04 (6H, s, -CH 3 ).IR(KBr, cm -1 ): 1742 (C=O), 2924 (-CH 3 ), 1635 (C=C), 1323-1290 (=SO 2 ). It shows that SDPDMA has been prepared.

Embodiment 2

[0056] Embodiment 2: the synthesis of SDPMA

[0057] Add 5.01g (20mmol) of SDP, 2.08mL (15mmol) of triethylamine and 20mL of dimethylformamide into a 50mL two-necked flask. A mixture of mL (15 mmol) methacryloyl chloride and 14.5 mL dimethylformamide. After the dropping, the solid was filtered out, and the obtained filtrate was dropped into 400 mL of distilled water drop by drop, and the precipitate was precipitated by stirring. After suction filtration, it was dried in a vacuum oven at room temperature to obtain a crude product, which was separated and purified by column chromatography.

[0058] 1 H NMR (300MHz, CDCl 3 , TMS): δ (ppm) 7.93 (2H, d, -Ph), 7.76 (2H, d, -Ph), 7.25 (2H, d, -Ph), 6.85 (2H, d, -Ph), 6.51 ( 1H, s, -OH), 6.36 (1H, s, =CH 2 ), 5.81 (1H, s, =CH 2 ), 2.04 (3H, s, -CH 3 ).IR(KBr, cm -1 ): 1738 (C=O), 2927 (-CH 3 ), 1636 (C=C), 1315-1289 (=SO 2 ). It indicated that SDPMA was prepared.

Embodiment 3

[0059] Embodiment 3: Synthesis of resin balls with different degrees of crosslinking

[0060] According to the formula in Table 1, after mixing the oil phase and the water phase evenly, pour them into the N 2 Into the three-necked flask of the introduction tube, reflux condenser, and mechanical stirrer, pass N 2 After 0.5h, put it into a constant temperature water bath preheated to 70°C, react at 225rpm for 1.5h, then raise the temperature to 85°C for 4h, and continue to raise the temperature to 90°C for 5h. After the reaction, the resin microspheres were filtered, extracted with dichloromethane for 24 hours, and dried to collect resin spheres with particle diameters in the range of 0.45-2 mm for future use. For the adsorption performance of resin balls on toluene and petroleum ether, see figure 1 (Note: The adsorption condition is 48h at room temperature).

[0061] Table 1: Raw material ratio of resin balls with different degrees of crosslinking

[0062]

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Abstract

The invention belongs to the technical field of adsorption and separation, and specifically, relates to a resin ball capable of preferential adsorption of an aromatic hydrocarbon component of a hydrocarbon mixture, and a preparation method thereof. The resin ball is a styrene resin ball which has a certain crosslinking degree and is subjected to copolymerization modification by polar monomers. Through the difference of swelling adsorption capacities of the resin ball on aromatic hydrocarbons and non-aromatic hydrocarbons, an aromatic hydrocarbon component of a hydrocarbon mixture can be adsorbed conveniently by the resin ball so that an aromatic hydrocarbon component separation effect is realized. The resin ball is a random copolymer, wherein styrene is utilized as a main monomer, and various polar monomers and different cross-linking agents are utilized to modify styrene. The resin ball is prepared from easily available raw materials, is easy for synthesis, can be recycled, is convenient for operation and aftertreatment, simplifies a process flow, and reduces an operation cost and energy consumption. In application, through a gradient centrifugation method, the resin ball provides a novel and simple approach for high-efficiency separation of aromatic hydrocarbons and non-aromatic hydrocarbons.

Description

technical field [0001] The invention belongs to the technical field of adsorption separation, and in particular relates to a resin ball capable of selectively adsorbing aromatic hydrocarbon components in hydrocarbon mixtures and a preparation method thereof. Background technique [0002] In recent years, petroleum products have developed rapidly, their application fields have been continuously expanded, and product varieties have continued to increase. Based on the enhancement of people's health awareness, the quality indicators of various petroleum products have also been improved. At the same time, with the continuous development of petrochemical and textile industries, the demand for aromatic products is also increasing. The preparation of high-quality gasoline with low aromatics content and high octane number, environmentally friendly solvent oil for edible oil extraction with extremely low aromatics and sulfur content, and the production of hydrocarbon products with hi...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D15/08C08F212/08C08F220/18C08F212/10C08F220/38C08F222/24C08F2/20
Inventor 崔占臣杨蓓于环洋史作森
Owner JILIN UNIV
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