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Industrial production method for trioctyl phosphate

A technology of trioctyl phosphate and octanol, applied in chemical instruments and methods, organic chemistry, chlorine/hydrogen chloride, etc., can solve problems such as inconvenience in industrial production, safety risks, inconvenient storage, etc., to reduce the degree of emulsification, increase the Product purity, cost-saving effect

Active Publication Date: 2013-09-18
岳阳振兴中顺新材料科技股份有限公司
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AI Technical Summary

Problems solved by technology

However, due to the exposed elemental sodium metal, it is inconvenient to transport and store, and there are safety risks, so it is not convenient to be used in industrial production

Method used

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  • Industrial production method for trioctyl phosphate
  • Industrial production method for trioctyl phosphate
  • Industrial production method for trioctyl phosphate

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the embodiments and drawings, but it is not intended to further limit the present invention.

[0027] As attached to the manual figure 1 As shown, the industrial production process of trioctyl phosphate of the present invention mainly consists of centrifugal pump 1, octanol storage tank 2, octanol metering tank 3, mixing kettle 4, frozen brine pump 5, frozen brine device 6, esterification kettle 7, steam pipeline 8, neutralization kettle 9), alkali water tank 10, hydrogen chloride recovery device 11, washing device 12, vacuum pump 13, rectification kettle 14, condenser 15, alcohol-water separator 16, lens 17, etc.

[0028] Wherein, the centrifugal pump 1 draws octanol from the octanol storage tank 2 into the octanol metering tank 3, opens the valve 18, and adds the octanol in the octanol metering tank 3 to the mixing tank 4. The frozen brine in the frozen brine device 6 enters the jacket of the m...

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Abstract

The invention relates to an industrial production method for trioctyl phosphate, and in particular relates to an industrial production process for trioctyl phosphate and a byproduct recovering method. Raw materials comprise octanol, phosphorus oxychloride, phosphorus oxychloride and aqueous alkali. The device mainly comprises a centrifugal pump, an octanol storage tank, an octanol metering tank, a mixing kettle, a freezing brine pump, a freezing brine device, an esterification kettle, a steam pipeline, a neutralizing kettle, an alkaline water tank, a hydrogen chloride recovering device, a washing device, a vacuum pump, a dealcoholization pump, a condenser and an alcohol-water separator. According to the method provided by the invention, hydrogen chloride can be recovered and marketed in form of hydrochloric acid product, so that pollution is reduced. The washing device is further arranged to adequately remove impurities such as monooctyl phosphate and dioctyl phosphate. A lens is additionally installed, so that whether washing water is discharged completely or not is easy to judge. A spraying stirring device is adopted to reduce the degree of emulsification during separation. The alcohol-water separator can produce octanol products, so that the product purity of trioctyl phosphate is increased and the production cost is lowered.

Description

technical field [0001] The present invention relates to an industrial production method of trioctyl phosphate, in particular to an industrial production process of trioctyl phosphate and its by-product recovery method, using octanol (2-ethylhexanol) and phosphorus oxychloride ( POCl 3 ) reaction to generate trioctyl phosphate, and the by-products include hydrochloric acid products and octanol products, which belong to the technical field of chemical production. [0002] technical background [0003] Trioctyl phosphate (TOP for short) was first used as a plasticizer. It has good compatibility, low-temperature flexibility, flame retardancy, and bacteria resistance. It is widely used in plastic and fiber processing. Existing trioctyl phosphate is mainly used in anthraquinone method to produce hydrogen peroxide ( ) instead of hydroterpineol, so that the product has high concentration, good quality, and less self-consumption. [0004] The anthraquinone method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/11C01B7/03
Inventor 陈攀陈振兴冯礼仪
Owner 岳阳振兴中顺新材料科技股份有限公司
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