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Epoxybutane composition and preparation method thereof

A technology of butylene oxide and isobutane oxide, which is applied in the direction of organic chemistry, can solve the problems of limited output, long separation process, and low purity, and achieve the effects of low raw material cost, high product purity, and environmentally friendly process

Active Publication Date: 2018-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the recovery of butylene oxide from the production process of propylene oxide in the prior art has the problems of long separation process, limited output and low purity. A butylene oxide composition is disclosed, especially The butylene oxide composition prepared by the cumene hydroperoxide method (CHP method) has a wide range of raw material sources, low cost, high product purity, and environmentally friendly processes, and is suitable for the production of polyether polyols and foaming agents, etc. Advantages of Polymers

Method used

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  • Epoxybutane composition and preparation method thereof
  • Epoxybutane composition and preparation method thereof
  • Epoxybutane composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] Cumene undergoes peroxidation reaction with air to generate cumene hydroperoxide (CHP), and CHP undergoes epoxidation reaction with butene under the action of Ti-HMS catalyst to generate butylene oxide and α,α-di Methyl benzyl alcohol. In the presence of a proprietary palladium / carbon catalyst, α,α-dimethylbenzyl alcohol undergoes a hydrogenolysis reaction with hydrogen to generate cumene, and then cumene is returned to the peroxidation unit as a raw material for the preparation of CHP for recycling.

[0054] The reaction temperature of the epoxidation reaction is 100°C, the reaction pressure is 3MPa, the molar ratio of butene to CHP is 5:1, and the space velocity of CHP is 5h -1 .

[0055] The butene epoxidation product is recovered butene, and the crude butylene oxide solution after separation of α,α-dimethylbenzyl alcohol contains 97.3wt% butylene oxide, water, propionaldehyde, acetone, butyraldehyde, epoxy Isobutane, methanol, methyl formate, C 5 ~C 8 Hydrocarbo...

Embodiment 2

[0062] Embodiment is the same as embodiment 1.

[0063] The difference is that the catalyst for the epoxidation reaction is Ti-KIT, the reaction temperature is 120°C, the reaction pressure is 3.5MPa, the molar ratio of butene to CHP is 6:1, and the space velocity of CHP is 4h -1 .

[0064] The butylene epoxidation product is recovered butene, and the crude butylene oxide solution after separating α,α-dimethylbenzyl alcohol contains 95.7wt% butylene oxide, water, propionaldehyde, acetone, butyraldehyde, epoxy Isobutane, methanol, methyl formate, C 5 ~C 8 Hydrocarbon impurities totaled 4.3 wt%.

[0065] The butylene oxide composition is obtained by refining crude butylene oxide. Among them, the extractant is n-heptane, the theoretical plate number of the extraction tower is 70, the operating pressure is 160kPa, the operating temperature of the tower kettle is 120°C, the reflux ratio is 40, and the solvent ratio is 6; the theoretical plate number of the separation tower It i...

Embodiment 3

[0071] Embodiment is the same as embodiment 1.

[0072] The difference is that the catalyst for the epoxidation reaction is Ti-SiO 2 , the reaction temperature is 110°C, the reaction pressure is 3.2MPa, the molar ratio of butene to CHP is 8:1, and the CHP space velocity is 4.5h -1 .

[0073] The butene epoxidation product is recovered butene, and the crude butylene oxide solution after separation of α,α-dimethylbenzyl alcohol contains 96.5wt% butylene oxide, water, propionaldehyde, acetone, butyraldehyde, epoxy Isobutane, methanol, methyl formate, C 5 ~C 8 Hydrocarbon impurities totaled 3.5 wt%.

[0074] The butylene oxide composition is obtained by refining crude butylene oxide. Among them, the extraction agent is n-octane, the theoretical plate number of the extraction tower is 65, the operating pressure is 150kPa, the operating temperature of the tower kettle is 117°C, the reflux ratio is 80, and the solvent ratio is 8; the theoretical plate number of the separation to...

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Abstract

The invention relates to an epoxybutane composition and a preparation method thereof. The epoxybutane composition comprises at least 99.6 wt% of epoxybutane and below 2500 wppm of epoxyisobutane. Theproblems of generation of a byproduct epoxybutane in the production of epoxypropane, long epoxybutane separation process, yield restriction and low purity are mainly solved. The epoxybutane composition, especially the epoxybutane composition produced through a CHP method has the advantages of wide raw material source, low cost, high purity of polyether polyol, a foaming agent and other polymer products, and green and environmentally-friendly technology when used to produce the polyether polyol, the foaming agent and other polymer products. The invention also discloses a use of the epoxybutanecomposition in the production of the polyether polyol and the foaming agent.

Description

field of invention [0001] The invention relates to a butylene oxide composition and a preparation method thereof, in particular to epoxy resin obtained by epoxidation reaction on a mesoporous or macroporous silica catalyst using cumene hydroperoxide as an oxidizing agent. Butane composition. Background technique [0002] Butylene oxide (BO) is an important organic compound, which can be used to prepare organic synthesis intermediates and polyether polyols, to produce 1,2-butanediol, butanolamine, etc.; it can also be used as a foaming agent , diluent for nitro lacquer, antioxidant for chlorine-containing compounds, etc.; it can also be used as a stabilizer for chlorinated solutions. The production routes of BO mainly include chlorohydrin method and epoxidation method. The epoxidation method is divided into hydroperoxide cumene method (CHP method) and hydrogen peroxide oxidation method (HPPO method). [0003] Industrially, butylene oxide mainly comes from the recovery of b...

Claims

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Application Information

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IPC IPC(8): C07D301/19C07D301/32C07D303/04C08G65/28C08G18/48C08G101/00
CPCC07D301/19C07D301/32C07D303/04C08G18/4829C08G65/2609C08G2101/00
Inventor 辜乌根胡松
Owner CHINA PETROLEUM & CHEM CORP
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