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Supergravity device for efficient coupling reinforcement in liquid-liquid heterogeneous reaction and product two-phase separation process

A heterogeneous and phase-separated technology, applied in the chemical method, liquid separation, chemical/physical process, etc. of the liquid-liquid reaction, which can solve the problem of many coaxial rotating parts, long oil-water separation time, and increased energy consumption. and other problems to achieve the effect of efficient coupling enhancement

Pending Publication Date: 2021-12-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can effectively solve the problem that the oil-water two-phase separation time is long after being fully mixed in the high-gravity reactor, but on the other hand, it also increases additional energy consumption, and the device of the invention has many coaxial rotating parts, which affects the stability of the equipment. Sex poses greater challenges

Method used

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  • Supergravity device for efficient coupling reinforcement in liquid-liquid heterogeneous reaction and product two-phase separation process
  • Supergravity device for efficient coupling reinforcement in liquid-liquid heterogeneous reaction and product two-phase separation process
  • Supergravity device for efficient coupling reinforcement in liquid-liquid heterogeneous reaction and product two-phase separation process

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Effect test

Embodiment 1

[0090] Adopt the equipment of the present invention and image 3 Shown system is to produce epichlorohydrin with dichloropropanol and sodium hydroxide aqueous solution as raw material, concrete steps and result are as follows:

[0091] Store the aqueous sodium hydroxide solution of mass fraction 4% in the light phase storage tank, store the chemically pure dichloropropanol liquid in the heavy phase storage tank, with the mass flow rate of 1kg / min and 150g / min respectively hydrogen oxidation Sodium aqueous solution and dichloropropanol liquid are poured into the T-shaped feed pipe, the reaction temperature is controlled at 80°C, the rotational speed of the rotary filling rotor is 1000r / min, the product discharge time is recorded and the content of epichlorohydrin is sampled and analyzed; 10 minutes After obtaining a stable output product, the mass fraction of epichlorohydrin was analyzed to be 98.2%.

Embodiment 2

[0093] Adopt the equipment of the present invention and Figure 4 The system shown carries out the crude sulfate turpentine desulfurization and refining process, the specific steps and results are as follows:

[0094] Crude sulfate turpentine is continuously fed into the supergravity reaction phase separator-oil phase inlet through the feed pump at a certain stable flow rate, and the hydrogen peroxide that meets the stoichiometric ratio is continuously fed into the supergravity reaction phase separator-water through the feed pump Phase inlet, the two react quickly and fully in the supergravity reaction phase separator 1, the low-valent sulfide impurities are oxidized, and the water obtained from hydrogen peroxide reduction is used as a detergent for oil phase impurities, and the reacted liquid is swirled to avoid rapid and thorough phase separation , the heavy phase is produced as wastewater, and the light phase is turpentine oil containing a small amount of acidic impurities,...

Embodiment 3

[0096] Adopt the equipment of the present invention and image 3 The shown system uses hydroxylamine sulfate aqueous solution and cyclododecanone oxime liquid as raw materials to produce cyclododecanone oxime, and the specific steps and results are as follows:

[0097] In the light phase storage tank, there is an aqueous solution of hydroxylamine sulfate with a mass fraction of 2% (in terms of hydroxylamine), and the pH value is preset to 8 with ammoniacal liquor, and in the heavy phase storage tank, there is cyclododecanone liquid, respectively with 1.5kg / min and 0.5kg / min mass flow rate, put the hydroxylamine sulfate aqueous solution and cyclododecanone liquid into the T-shaped feed pipe, control the reaction temperature at 98 degrees Celsius, and the rotary filling rotor speed is 1000r / min, after 16 minutes at the light phase outlet The cyclododecanone solution of cyclododecanone oxime is produced stably, excess cyclododecanone is removed, the mass fraction of cyclododecan...

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Abstract

The invention relates to a supergravity device for efficient coupling reinforcement in a liquid-liquid heterogeneous reaction and a product two-phase separation process. According to the supergravity device for efficient coupling reinforcement in the liquid-liquid heterogeneous reaction and product two-phase separation process, through the special design of an outer wall and a liquid throwing disc, heterogeneous liquid fully mixed in a rotary filling rotor is thrown out at a special angle and swirls along the outer wall, and the purpose of light-phase and heavy-phase separation is achieved. According to the supergravity device for efficient coupling reinforcement in the liquid-liquid heterogeneous reaction and the product two-phase separation process of the invention, the liquid-liquid heterogeneous mixing process is enhanced through a rotating packed bed, and the two-phase separation problem after the reaction is enhanced by coupling kinetic energy generated when liquid drops are thrown out of a bed layer with a cyclone separator, so that no extra energy is consumed, the production efficiency can be fully improved, and the occupied area of equipment is reduced. The device can be widely applied to liquid-liquid heterogeneous mixing, reaction, mass transfer and separation coupling processes, and has important industrial application prospects.

Description

technical field [0001] The invention relates to a high-efficiency coupling strengthening device for liquid-liquid heterogeneous reaction and product two-phase separation process, which belongs to the field of chemical technology and chemical engineering. Background technique [0002] Liquid-liquid heterogeneous processes widely exist in chemical processes, including many reaction systems such as saponification, nitration, sulfonation, and oximation, as well as unit operations such as extraction. In these processes, it is necessary to promote the rapid and thorough mixing of the liquid-liquid two phases (generally the oil phase and the water phase), so that the two phases can be fully dispersed and contacted, and the interphase mass transfer area is increased, thereby promoting the mass transfer and reaction process. . In addition, if rapid and sufficient two-phase mixing cannot be achieved, the local concentration in the phase will often be too high, which is conducive to t...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J14/00B01D17/038
CPCB01J19/0066B01J19/1862B01J14/00B01D17/0217
Inventor 张亮亮初广文陈建峰邹海魁孙宝昌罗勇
Owner BEIJING UNIV OF CHEM TECH
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