SU1361113A2 - Flotation machine - Google Patents

Abstract

The invention relates to apparatus for cleaning and degassing liquids used in refining. The purpose of the invention is to increase the efficiency of liquid degassing and the quality of cleaning. The flotator contains an airtight container 1 with nozzles, supply of the initial mixture, drainage of 3 clarified liquids, foam product and sludge, vertical horizontal cylinder K (L hch

Description

13611

a septum, a foam container (P), a perforation distributing device, an axial tube. P made in the form of a pocket. In the axial tube, the impeller (k) is rotatably mounted. Professional foam blades are placed between the foam container and the vessel wall. (LL), rigidly connected box

The invention relates to apparatus for cleaning and degassing liquids used in the petroleum, petrochemical, and refining industries when removing oil products, mechanical impurities, and associated gases from gassed water and is an improvement of the invention according to the authors. St. No. 1313807.

The purpose of the invention is to increase the efficiency of liquid degassing and cleaning quality.

FIG. 1 schematically shows the flotation cell; in fig. 2 shows section A-A in FIG. one.

The flotator contains an airtight container 1 with nozzles for supplying the initial mixture 2, discharging the clarified liquid 3, foam product 4 and sludge 5, a vertical cylindrical partition 6 installed in the tank coaxially above the bottom, and a foam container 7 located below the upper end of the vertical cylindrical partition.

A distribution device 8 with perforations 9 installed in the lower part of the tank 1 is attached to the nozzle 2. In the tank 1 there is an axial tube 10, the lower end of which is attached to the nozzle 3, and the upper one is located inside the vertical cylindrical partition 6 below its upper end.

The breeder 7 is made in the form of a pocket, which is provided with a vertical cylindrical partition 6 outside the perimeter, while the outer cream of the pocket is located at the level of the upper end of the axial tube 10.

On the axial tube 10 below the foam collector 7 a ring 11 is installed, outside 13

thinking with K The liquid clarified during the flotation process is discharged down the axial pipe and out of the tank 1 through the nozzle. As a result of the liquid K flowing in the pipe on K, the latter, together with the submarine, comes into rotation, foam IL is discharged into P. 2 Il.

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the diameter of which is larger than the diameter of the vertical cylindrical partition 6, the sump 7 is communicated with the nozzle 4 by means of a pipe 12.

In the axial tube, the ratchet 13 is mounted with the possibility of rotation, and in the annular space between the foam collector 7 and the wall of the container 1, profiled blades 14 are spaced rigidly connected by means of the rocker arm 15 with the impeller. The yoke 15 is mounted on bearings 16.

Flota.tor works as follows.

The initial gas-saturated mixture enters under pressure in the tank 1 through the pipe 2. At the outlet of the mixture of perforations 9 of the distributor device 8, the smallest bubbles of dissolved gas are intensively released. When floating up these bubbles capture particles of solid and liquid impurities, creating 5 foam on the interface.

The distribution device 8 provides a uniform distribution of gas bubbles in the cross section of the filled volume of the liquid being cleaned. 0 The clarified liquid enters the space between the walls of the axial pipe 10 and the vertical cylindrical partition 6. from below, from where it flows into the pipe through the pipe 3 and leaves the container 1.

The fluid level in the pipe 10 is maintained below the height of the impeller 13. The stream of clarified liquid flowing in the pipe 10 causes the impeller 13 to rotate 40 together with the profiled vanes 14. In this case, the foam is scooped by the vanes 14 into the pocket of the sump 7, from which it goes

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12 flows down and through the pipe 4 out of the tank 1.

The foam product is on the surface of the liquid being cleaned outside the vertical cylindrical partition 6 and its breakthrough pipe 10 is excluded due to the fact that the upper end of this pipe is located below the upper end of the cylindrical partition 6.

The flow of the clarified liquid into the pipe 10 and the froth product into the pipe 12 facilitates the movement of the surface layer of liquid from the periphery of the container 1 to the axial zone.

1 lam from tank 1 is discharged through pipe 5.

In the proposed floater, continuous removal of the foam is carried out simultaneously with the entire surface of the liquid mirror, and also provided

This gives a highly developed interfacial surface as a result of the splitting of a jet of liquid falling in an axial tube into droplets and the fragmentation of these drops in a crush. The creation of such hydrodynamic conditions makes it possible to increase the degree of liquid degassing by about 1, 2-1.5 times.

Claims (1)

Formula invented Flotator on auth. St. No. 1313807, characterized in that, in order to increase the efficiency of liquid degassing and cleaning quality, it is equipped with a lump and profiled blades installed in an axial tube that can be rotated in the annular space between the suction box and the vessel wall and rigidly connected by a rocker to the lump. Compiled by T. Ledneva Editor A. Shishkina Tehred M. Didyk Proofreader V. But ha Order 6191/26 Circulation 851 Subscription VNISH1I USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab .; 4/5 Production and printing company, Uzhgorod, st. Design, 4. FIG. 2