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Surface aeration multiphase contact stirring equipment

A surface aeration and stirring device technology, which is applied to mixers with rotating stirring devices, transportation, packaging, dissolution, etc., can solve the problems of lack of aeration efficiency, achieve enhanced aeration capacity, enhanced mass transfer effect, absorption The effect of strong energy

Inactive Publication Date: 2003-09-24
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a three-phase complex system including gas-liquid two-phase and another solid phase or another liquid phase, there is still a lack of high aeration efficiency, while ensuring gas-liquid and other phases (such as liquid-liquid, liquid-solid) Efficient contact stirring device with excellent dispersion and mass transfer effect

Method used

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  • Surface aeration multiphase contact stirring equipment
  • Surface aeration multiphase contact stirring equipment
  • Surface aeration multiphase contact stirring equipment

Examples

Experimental program
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Effect test

Embodiment approach

[0016] attached image 3 and 4 It is the structural representation of two embodiments of the present invention; As can be seen from the figure, the surface aeration type multiphase contact stirring device provided by the present invention comprises a stirring tank 8, a stirring shaft 1 installed at the center of the stirring tank 8, and The surface aeration stirring paddle 2 installed at the lower end of the stirring shaft 1 is characterized in that: it further includes an upwardly pushing axial flow paddle 3, and the upward pushing axial flow paddle 3 is installed on the stirring shaft 1 below the surface aeration stirring paddle 2; On the stirring shaft 1 above the surface aeration stirring paddle 2, a spin self-floating baffle plate 4 that freely floats up and down along the stirring shaft 1 and rotates freely is installed; The diameter of the circular baffle is smaller than the inner diameter of the stirring tank 8 and larger than the outer diameter of the surface aeratio...

Embodiment 1

[0021] For the gas-liquid two-phase system, the inner diameter is φ154 mm, the height is 300 mm, and four stirring tank baffles 9 are symmetrically arranged on the inner side of the tank wall. In the cylindrical open stirring tank 8, the medium is water and air, and the liquid level in the tank is high. 240 mm, the width of the baffle plate 9 of the stirring tank is 15 mm; the surface aeration stirring paddle 2 adopts a standard Rushton paddle with a blade diameter of 62 mm, and the push-up axial flow paddle 3 adopts a 45-degree push-up inclined blade turbine paddle, and the paddle The leaf diameter is 58 millimeters, and the spin self-floating baffle 4 is made up of 12 fan-shaped pieces of the same size, and the fan-shaped pieces are twisted to form an angle of 30 degrees with the horizontal plane, and the diameter of the spin-self-floating baffle 4 is 75 millimeters; this embodiment includes Three stirring tank configurations, one is figure 1 The one shown uses a single Rush...

Embodiment 2

[0024] For the gas-liquid-liquid three-phase hydroformylation reaction system of 1-dodecene catalyzed by water-soluble rhodium-phosphine complex, the concentration of 1-dodecene is 4.4×10 3 Mole / cubic meter, the concentration of aqueous phase rhodium-phosphine complex catalyst is 1.0 mol / cubic meter, and the phosphine-rhodium ratio is 18, and the mass percent concentration of adding surfactant CTAB is 0.3%, the volume of organic liquid phase and aqueous phase The ratio is 1 / 1, and the reaction mixture is composed of H with a molar ratio of 53 / 47 2 and CO, the reaction pressure is 1.1 MPa, and the reaction temperature is 90°C. The U-shaped bottom cylindrical reaction kettle 8 with an effective volume of 500 milliliters is adopted, and the total volume of the liquid phase in the kettle is 200 milliliters.

[0025]This embodiment includes three kinds of stirred tank configurations, one is to adopt such as figure 1 The single Rushton paddle 2 shown, the other adopts a double-lay...

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Abstract

The present invention relates to a surface aerated multiphase contact stirring equipment, including stirring tank, surface aerated stirring paddle mounted on the lower end of stirring shaft in the stirring tank, also including upward pushing axial flow paddle mounted on the stirring shaft under the surface aerated stirring paddle, it can have 1-2 upward-pushing axial-flow paddle, can be axial flow type upward-pushing oblique blade turbine paddle, the included angle between blade and level is 30-60 deg. The auto-rotating auto-floating buffle is mounted on the stirring shaft over the surface aerated stirring paddle, and is formed from 4-36 sectors, in which the inclination of the sertors inclined to level is 10-60 deg. and its diameter is less than inner diameter of the stirring tank and greater than the outer diameter of the surface aerated stirring paddle.

Description

[0001] Field of the invention The present invention belongs to the stirring device in the fields of petrochemical industry, biochemical pharmacy, environmental protection and hydrometallurgy, etc., and particularly relates to a gas phase suction suitable for gas-liquid-liquid, gas-liquid-solid, gas-liquid and other multi-phase systems , Surface aeration multiphase contact stirring device for multiphase dispersion mixing, interphase contact and multiphase chemical reaction process. Background technique [0002] In order to avoid the circulation and compression of a large amount of gas outside the reactor, self-priming or surface aeration stirring paddles can be used in the gas-liquid multiphase stirring tank. The self-priming impeller has low power consumption and good mass transfer effect, but its disadvantages are large limitation of suction capacity, unstable operation, and complex reactor structure. Surface aeration paddles, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F27/91
Inventor 杨超禹耕之毛在砂
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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