SU1212541A1 - Apparatus for gas and liquid reaction - Google Patents

Description

I

The invention relates to the microbiological, chemical and other sectors of industry, where the efficiency of biochemical and chemical transformations in gas-liquid systems depends not only on the rate of the biochemical and chemical reaction, but also on the hydrodynamic state of the system, and . issolevano, e.g. j, for growing gas-oxidizing organisms; f, -

 invention ,,, - the development of a gas-holding fluid.

This is achieved by providing an intensive ejection of the gas phase by the circulating fluid flow with maximum use of the surface area of the apparatus by making a device for turbulizing the liquid and ejecting the gas phase with vertical fixed blades bent from the tank wall towards the center in a spiral direction of rotation of the agitator, and the orientation of the peripheral areas of the blades tangentially to the walls, as well as the execution of the blades with a helical bend.

1 shows an apparatus for contacting gas and liquid; in Fig.2 is a section aa in Fig.I.

The apparatus for contacting gas and liquid contains a vertical tank 1 with nozzles 2 and 3 for supplying liquid and gas, an open turbine mixer 4 installed in the lower part of the tank, mounted on the drive shaft 5, the nozzle 6 for the gas outlet is filled in the lid of the tank 1, and the walls of the tank I - pipe 7 for the withdrawal of fluid.

In the upper part of the tank 1, below the estimated level of the liquid, a device 8 is placed for mixing the liquid and ejecting the gas phase, mounted on the rods 9, which can be fixed at a certain distance from the clamp of the tank 1 by means of the latch 10. The device 8 contains blades 11 fastened in center with the help of the sleeve 12, through which the shaft 5 of the agitator freely passes. The blades 11 are bent from the stack of the tank 1 to the center in a spiral in the direction of rotation of the mixer 4

21254I2;

and their peripheral areas are tangentially directed to the walls. Each blade 11 has, in addition, a helical bend of the container 1, the vector

5 of the circumferential flow rate of the gas-liquid mixture is directed parallel to the axial line of the helical blade.

With this design, the blades 11

10, an inlet channel is formed in the fixture 8, which has a low flow resistance.

The apparatus for contacting gas and liquid works as follows.

15 Into the tank 1 through the nozzle 2, the culture fluid is supplied to the level established by the nozzle 7. Using the rods 9 and the retainers 10 of the fixture 8, the gas-air mixture is fed through the nozzle 3 under the agitator 4. The culture fluid is fixed by the gas-air mixture in the zone of the agitator 4 and flows to the wall Capacity 1. Lift Camping

25 upwards, the gas-liquid mixture is divided into streams at the entrance between the blades II of the fixture 8, where the gas bubbles are separated. At the entrance to the device 8 thread

The 30 fluid flows tangentially from the wall of the container 1 into the channel between the two vanes 11 to the center of the container. 1 where it merges into the central zone of the tank 1 and receives a rotator j from the agitator 4. Rotation., The central fluid flow is slowed by the blades 11, as a result of which the surface layer is turbulized, creating local zones

40 discharges in the flow around the blades 11 of the liquid and the ejection of gas phase bubbles into the liquid entering the superscheckles 4. In the zone of the agitator 4, gas bubbles are crushed to

5 are smaller and are mixed in a turbulent flow with fresh puffs that are dispersed by the lower part of the agitator 4 from the bubbles entering through the nozzle 3.

50

In the proposed apparatus, the ejection passes rio throughout the entire cross section of the tank 1, in addition, the funnel is eliminated, preventing intensification of the mixing process by increasing the frequency of rotation of the agitator. All this allows to obtain a high coefficient of gas-containing liquid.

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Claims (2)

1. GAS AND LIQUID CONTACT DEVICE, comprising a vertical container with nozzles for supplying liquid and gas, a drive agitator installed in the lower part of the vessel and a device for fluid turbulence and gas phase ejection, mounted in the upper part of the vessel with the possibility of movement along the vertical axis, characterized in that, in order to increase the gas content of the liquid, the device for turbulizing the liquid and ejecting the gas phase contains vertical 'stationary blades curved from the wall of the tank to the center in a spiral in the direction of rotation of the mixer, their peripheral sections are directed tangentially to the walls. 2. The apparatus according to claim 1, with respect to and often with the fact that the blades have a helical bend. SU., „1212541 Fig! >