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Hydration reaction method for light olefins

A low-carbon olefin and hydration reaction technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical recovery, etc., can solve problems such as magnetic disappearance, improve mass transfer and reduce energy consumption , the effect of improving production efficiency

Active Publication Date: 2009-05-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not easy to endow strongly acidic cation exchange resins with magnetism and use them in magnetically stabilized beds, mainly because the harsh reaction conditions often lead to the disappearance of magnetism during the sulfonation of magnetic resins.
At present, magnetic resin materials are mainly used in metal enrichment, sewage treatment, biochemistry, medical medicine and other fields. So far, there is no report on using magnetic resin as a catalyst for chemical production.

Method used

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  • Hydration reaction method for light olefins
  • Hydration reaction method for light olefins
  • Hydration reaction method for light olefins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Mix and dissolve 26.5ml of styrene and 0.24g of benzoyl peroxide, put it in a 75°C water bath, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 80ml of 1wt% gelatin aqueous solution, raise the temperature to 80°C with stirring, and keep for 2h; raise the temperature to 85°C, keep for 2h; then raise the temperature to 90°C, keep for 6h, and the reaction is terminated. The reaction system was cooled and discharged, washed repeatedly with distilled water, and dried naturally to obtain magnetic cores.

Embodiment 2

[0050] Mix and dissolve 17.5ml of styrene, 9.7ml of divinylbenzene, and 0.21g of benzoyl peroxide, put in a water bath at 80°C, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 80ml of 2.5wt% polyvinyl alcohol aqueous solution, raise the temperature to 82°C with stirring, keep for 2h; raise the temperature to 86°C, keep for 2h; then raise the temperature to 90°C, keep for 6h, the reaction is terminated. After the reaction system is cooled, the material is discharged, washed repeatedly with distilled water, and dried naturally to obtain the magnetic core.

Embodiment 3

[0052] Mix and dissolve 17.5ml of styrene, 9.7ml of divinylbenzene, and 0.25g of azobisisobutyronitrile, put in a 74°C water bath, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 70ml of 1wt% gelatin aqueous solution, raise the temperature to 80°C with stirring, and keep for 2h; raise the temperature to 86°C, keep for 2h; then raise the temperature to 91°C, keep for 6h, and the reaction is terminated. After the reaction system is cooled, the material is discharged, washed repeatedly with distilled water, and dried naturally to obtain the magnetic core.

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Abstract

The invention relates to a hydration reaction method for low-carbon olefin. Water and a raw material of the low-carbon olefin are fed into a magnetic stabilized bed reactor and subjected to contact reaction with magnetic strong acid resin, the molar ratio of the water to the low-carbon olefin is between 1-20:1, the reaction temperature is between 70 and 140 DEG C, the reaction pressure is 0.5 to 10MPa, the liquid volume airspeed is 2 to 100 h<-1>, and the magnetic field intensity of the magnetic stabilized bed reactor is 10 to 1,500 oersteds. The method uses the magnetic strong acid resin to catalyze the olefin to carry out hydration reaction in the magnetic stabilized bed reactor, improves the effects of mass transfer and heat transfer of a reaction system greatly, and reduces energy consumption. In actual operation, the method can load and unload a catalyst at any time and carry out ex-situ regeneration without stopping running of the device.

Description

technical field [0001] The invention relates to a hydration reaction method of light olefins. More specifically, the present invention relates to a method for catalyzing the hydration reaction of light olefins in a magnetically stabilized bed reactor with a magnetically strong acidic resin. Background technique [0002] Olefin hydration reaction is one of the important organic reactions, and its product alcohol is an important organic chemical raw material and solvent. Refinery gas and cracked gas from ethylene units are rich in C3 and C4 olefin resources, which can be converted into high-octane gasoline blending materials through olefin hydration reaction, making full use of these olefin resources to improve the economy of refining and chemical enterprises benefit. [0003] Olefin hydration reaction is an acid-catalyzed exothermic reaction, low temperature, high pressure, and excess water are beneficial to the chemical balance of light olefin hydration reaction. In the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/04B01J31/08
CPCY02P20/584
Inventor 程萌谢文华宗保宁刘强孟祥堃
Owner CHINA PETROLEUM & CHEM CORP
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