SU882549A1 - Method and apparatus for separating two different-density liquids - Google Patents

Description

one

The invention relates to the separation of liquids with different densities and can be used in the processes of separation of molten sulfur and water under pressure.

There is a known separation method - two liquids with different densities (molten sulfur and water), according to which water is passed in the form of droplets through a melt of sulfur containing small particles of water. When this occurs, the wetting and removal of small particles of ore from the melt. The molten sulfur is moved by this upwards, and the water droplets are moved downwards.

The disadvantages of this method are the length of the process and the low efficiency of the separation process.

To implement this method, a device is used comprising a case, a spiral with hollow perforated turns for twisting the flow, installed along the axis of the case

pipe with holes

and muffled lower end 21. "

However, additional components (gas and demulsifiers) are required to separate the liquid in the device.

The closest to the invention in its technical essence and the achieved result is a method for purifying wastewater from emulsified oil, according to which oil (a lighter fluid) is dispersed into the stream of wastewater being cleaned from oil pollution. At the same time, coalescence and upward recovery of 5 oil are achieved.

However, the known method does not provide a sufficiently complete degree of separation.

Claims (4)

A device for implementation is known. a known method that serves to dehydrate oil and comprises a housing with a rotating device located in the lower part, a screw insert and grooves mounted on the inner wall of the housing, inlet and outlet pipes | 4. The disadvantages of the known device are the complexity of the design and the short duration of the device during operation, the presence of rotating parts and mechanisms that make it difficult to use the device in conditions of high pressures and temperatures; the use of a mixing device, which entails additional energy costs for the separation process, and also does not allow for a sufficient degree of separation with fluctuations in process costs (with an increase in the volume of the supplied suspension). The purpose of the invention is to increase the degree of separation at elevated pressures and temperatures, as well as to simplify the design of the apparatus. This goal is achieved in that according to the method including gravitational separation of the mixture with removal of a part of the heavy liquid, dispersing the light liquid mixture and passing the dispersed liquid through the solid liquid phase, the liquid mixture is centrifugally separated beforehand and additionally disperses the heavy liquid residues. In this case, the device containing a housing with a disperser placed in it and nozzles for inlet and outlet of streams is equipped with a cylindrical center with a further separator with tangential inlet, while the disperser is placed in the upper expanded part of the separator. The drawing shows a device for carrying out the method. The device consists of body 1, cover 2, nozzles of emulsion input 3, light liquid outlet 4, heavy liquid output 5. Inside the case 1 there is a dilindo-conical centrifugal separator 6 with a tangential inlet 7. The disperser 8 is located in the upper part of the separator 6. in the lower part of the hole is made 9 for the output of a liquid of higher density. The device works as follows. The mixture of two liquids flows through the pipe 3 into the centrifugal separator 6, where the bulk of the heavy liquid separates, which is discharged through the opening 9 of the divider 94 into the housing 1. The remaining mixture enters the cispergator 8 and is crushed into droplets, which then pass through the solid the phase of heavy fluid and release from the latter. In centrifugal separation, a portion of the heavy liquid is withdrawn, through which the residual peppers mixture is then fed, and the continuous phase is trapped by the smallest droplets of the same liquid due to the wetting forces. Centrifugal separation with subsequent dispersion of a light liquid with heavy residues makes it possible to increase the fidelity of the contact of heavy liquid droplets when the light liquid passes through the heavy residues through the continuous phase of the latter. Example. 15m of water is mixed with 1 ton of molten sulfur, the particles of which have an equivalent diameter of 2 mm to 2 μm, and separation from superheated water is carried out at a pressure of 10 kg / sy and ISO C. The amount of molten sulfur droplets in superheated water is up to about. 15%. The stream is subjected to centrifugal separation, separating the molten sulfur and dispersing the remaining emulsion with a sieve disperser, then passing through a layer of separated sulfur pad. Drops of sulfur remain in the continuous layer, and dispersive. The bath water, after passing through the liquid sulfur, is discharged into the total mass and, thus, is freed from small droplets of melted sulfur. At the same time, complete separation of the molten sulfur and water is achieved. The proposed method provides, compared with, a known intensification of the separation process at elevated pressures and temperatures. At the same time, the separation process does not require additional heating of water, which significantly reduces energy costs and makes it possible to use the latter as a heat carrier. In addition, the invention provides a simplified design of the device for implementing the method. Claim 1. A method for separating two liquids with diffuse density, including gravitational separation of a mixture with withdrawal of a part of a heavy liquid, dispersion of a light liquid and passing the dispersed liquid through the continuous phase of a heavy liquid, so that in order to increase the degree of separation at elevated pressures and temperatures, the mixture of liquids is preliminarily subjected to centrifugal separation and the residuals of heavy liquid are additionally dispersed. 2. The device for drying the method according to claim 1, comprising; a housing with a disperser disposed therein and nozzles for inlet and flow axis, characterized in that it is provided with a cylindrical-conical centrifugal separator with a tangential entry, wherein the dispersant is placed in the upper expanded part of the separator. Sources of information taken into account 1ph expertise 1. US patent number 3647398. class. B01D 12/00, 1969. 2. USSR author's certificate N9 634758, cl. BOID 17 / O2, 1975. 3. Author sviepiebstvo USSR N 458220, cl. CO2 t / 26, COIC 1/38, 1971. 4. USSR author's certificate No. 591198, cl. BO1D 17 / O4, 1976.