RU2637234C1 - Saturator - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: invention relates to devices for saturating liquid with gas at the interface of contiguous phases, when gas bubbling is unacceptable. The saturator contains a body made in the form of a conical shell provided with upper and lower elliptical bottoms. The upper bottom is provided with branch pipes for liquid supply and gas outlet. The lower bottom is provided with gas supply and liquid discharge branch pipes. A truncated cone connected with motion mechanism is mounted inside the body on the upper elliptical bottom. The lower wider surface of the truncated cone with the inner surface of the conical shell forms an annular gap, the width of which can vary with the movement of the truncated cone. The cavity formed by the inner surface of the body and the outer side of the truncated cone located above the annular gap is a supply zone. A perforated gas distributor is installed in the central and lower parts of device in the form of coaxially arranged meshed conical shell with elliptical bottom. Liquid supply and discharge branch pipes are interconnected by a circulation pump.

EFFECT: treatment of solutions with different viscosity, as well as emulsions and suspensions.

3 cl, 2 dwg

Description

The invention relates to equipment for the chemical industry, and in particular to devices for saturating a liquid with gas at the interface of the contacting phases, when gas sparging is unacceptable. The amount of gas absorbed by the liquid in this case depends primarily on the surface properties and free contact area.

A known carbonizer of aluminate solutions (RF patent 2355637, IPC C01F 7/14, published May 20, 2009), including a housing, a mixing device with a central shaft and a drive, nozzles for supplying and removing a processed solution and reagent gas, a gas distribution device with one or more perforated plates and a gas-dispersing device with blades consisting of internal and end parts, with both parts of each blade of the gas-dispersing device inclined to a horizontal plane, and the end Asti passing during rotation of the shaft immediately above the perforated plates are formed with a negative angle of attack of from 5 to 45 ° with the horizontal plane.

The disadvantage of this carbonizer is the high energy intensity of the carbonization process due to the use of the mixer in the regime of a gas-dispersing device.

A known saturator for beet sugar production (US Pat. RF 2449 021, IPC СВВ 20/04, 2012), comprising a cylindrical body with a conical bottom, equipped with process pipes and perforated baffles located in its lower part for dispersing the flow of saturation gas. In the upper part of the cylindrical body there is a device for separating drops of juice from saturation gas. The device is a truncated cone with longitudinal helical grooves on the inner surface, hermetically attached with a large base to the wall of the cylindrical body with the formation of a cavity outside to collect the droplets released, in communication with the cavity of the cylindrical body located under the truncated cone. At the same time, at least four flexible drain pipes are diametrically located in the cylindrical body, which are plugged at the lower end, and narrowing nozzles are made along the length of each tube in the wall of each tube for supplying juice from the collection cavity to the inner surface of the cylindrical body and forming a liquid film on it.

The disadvantage of this design is the inability to saturate the liquid with gas at the interface of the contacting phases, when gas sparging is unacceptable. In the known device, the bubbler 8 is located in the liquid supplied through the nozzle 9 and foam forms during bubbler operation, which makes it impossible to saturate emulsions and suspensions.

The objective of the invention is to provide a saturation process with the exception of pressure flotation.

The technical result is the provision of the possibility of processing solutions with different with different viscosities, as well as emulsions and suspensions.

The technical result is achieved by the fact that in a saturator for chemical technologies, comprising a housing with a bottom, equipped with nozzles for supplying and discharging the processed liquid and saturation gas and a truncated cone located in the upper part of the housing, according to the invention, the housing is made in the form of a conical shell equipped with elliptical bottoms, the upper bottom is equipped with a nozzle for supplying liquid and gas outlet, and the lower one is equipped with nozzles for supplying gas and liquid outlet, a truncated cone with its base installed in a housing with an annular a gap and connected to the movement mechanism, forming a liquid dispenser, a perforated gas distributor in the form of a coaxially arranged mesh conical shell with an elliptical bottom is placed in the central and lower part of the apparatus.

In a saturator for chemical technology, the nozzles for supplying and discharging liquids can be interconnected by a circulation pump.

The housing is in the form of a conical shell equipped with elliptical bottoms, the upper bottom is equipped with a nozzle for supplying liquid and gas outlet, and the lower one is equipped with nozzles for supplying gas and liquid outlet, a truncated cone with its base installed in the housing with an annular gap and connected to the movement mechanism, forming a liquid dispenser , in the central and lower part of the apparatus there is a perforated gas distributor in the form of a coaxially arranged mesh conical shell with an elliptical bottom provides:

- ease of assembly through the use of standard elliptical

bottoms;

- increased productivity by increasing the area of contact of the gas with the processed fluid;

- the exclusion of turbulization of fluid and gas flows by reducing the fluid flow rate in the metering zone, the use of a conical shell, on the inner surface of which the liquid is supplied, and mesh shells and bottoms through which the saturation gas is supplied;

- the simplicity of the control algorithm, which consists in maintaining the specified liquid levels in the supply zone above the annular gap and in the lower part of the apparatus, the so-called “Saturation zone” with a fixed gas supply, to avoid bubbling, allows you to automate the processing of liquids.

All this helps to reduce the energy intensity of the saturation process and improve the quality of the liquid treatment.

In FIG. 1 schematically shows a longitudinal section of the proposed saturator.

In FIG. 2 shows a cross section of the apparatus in the zone of the annular gap.

The list of items indicated in the drawing:

1 - housing;

2 - conical shell;

3 - upper elliptical bottom;

4 - lower elliptical bottom;

5 - pipe supply fluid;

6 - gas outlet pipe;

7 - gas supply pipe;

8 - pipe drain fluid;

9 - movement mechanism;

10 - truncated cone;

11 - annular clearance;

12 - food zone;

13 - mesh conical shell;

14 - mesh elliptical bottom;

15 - circulation pump;

16 - valve for draining the treated fluid;

17 - valve supply of the source fluid;

18 - valve at the inlet to the circulation pump;

19 - valve at the outlet of the circulation pump;

20 - sealing skirt.

The saturator for chemical technology contains a housing 1 made in the form of a conical shell 2, equipped with an upper elliptical bottom 3 and a lower elliptical bottom 4. The upper bottom 3 is equipped with a fluid supply pipe 5 and a gas outlet pipe 6, and the lower pipe with a gas supply 7 and a fluid outlet 8 Inside the case 1, on the upper elliptical bottom 3, a truncated cone 10 connected to the movement mechanism 9 is installed. The lower wider surface of the truncated cone 10 with the inner surface of the conical shell forms an annular OP 11, the width of which can change when moving the truncated cone 10. The cavity formed by the inner surface of the housing 1 and the outer side of the truncated cone 10, located above the annular gap 11, is the power zone 12. In the Central and lower part of the apparatus 1 is installed a perforated gas distributor in in the form of a coaxially arranged mesh conical shell 13 with an elliptical bottom 14. Supply pipes 5 and fluid outlet 8 are interconnected by a circulation pump 15. A vent is installed at the outlet of the discharge pipe 6 il draining the treated fluid 16, the supply valve of the source fluid 17 and the valves at the inlet and outlet of the circulation pump 18 and 19. The truncated cone 10 for a more accurate fit to the conical shell 2 is made with a sealing skirt 20, the outer surface of which is parallel to the inner surface of the conical shell 2.

The device operates as follows.

A measured amount of the initial liquid with open valves 17, 18, and 19 and closed valve 16 is pumped by pump 15 through the fluid supply pipe 5 to the supply zone 12, from which flows through the annular gap 11 formed by the sealing skirt 20 and the conical shell 2 along the inner surface conical shell 2 in the lower part of the housing 1, filling the lower elliptical bottom 4, after which the valve 17 is closed. In this case, the liquid to be saturated is fed through the liquid supply pipe 5 to the feed zone 12, from which through the annular gap 11 between the truncated cone 10 and the conical shell 2 along the inclined wall it flows uniformly into the saturation zone formed by the inner surface of the lower elliptical bottom and the outer surface of the mesh elliptical bottom 14, from which the pump 15 through the fluid supply pipe again returns to the power zone 12.

Simultaneously with the circulation of the liquid through the gas supply pipe 7 to the perforated gas distributor in the form of coaxially arranged mesh conical shell 13 with an elliptical bottom 14, a gas mixture is supplied. In this case, the liquid is saturated with gas at the interface of the contacting phases. To increase the efficiency, the gas mixture is supplied through the gas supply pipe 7 continuously, and unreacted gas is discharged through the gas outlet pipe 6 from the cavity of the truncated cone 10.

After the liquid reaches the specified physical and mechanical characteristics, the pump 15 is turned off, the valve 18 is closed and through the valve 16 the treated liquid is sent for consumption.

The periodic operation of the saturator was carried out above. Similarly, the apparatus can operate continuously, cyclically and at overpressure, which expands its functionality.

The volumes of the flowing liquid are regulated by moving the truncated cone 10 with the sealing skirt 20 using the movement mechanism 9: when the truncated cone 10 is lowered, the annular gap 11 decreases and the liquid level in the feeding zone increases, and vice versa. The selection of the optimal position of the truncated cone 10 provides the necessary ratio of liquid levels in the supply zone 12, the liquid level is not less than, and in the bottom 4 no more than a certain one - to avoid bubbling. The required level of liquid is determined based on its initial and achieved physical and mechanical characteristics during saturation.

The device provides the ability to handle solutions with different viscosities, as well as emulsions and suspensions.

Claims (3)

1. A saturator for chemical technology, comprising a housing with a bottom, equipped with nozzles for supplying and discharging the processed liquid and saturation gas and a truncated cone located in the upper part of the housing, characterized in that the housing is made in the form of a conical shell equipped with elliptical bottoms, the upper bottom is provided a fluid supply pipe and a gas outlet, and a lower pipe with gas supply and liquid outlet pipes, a truncated cone with its base mounted in a housing with an annular gap and connected to the movement mechanism Forming a liquid dispenser, in the central and lower part of the apparatus is placed a perforated gas distributor in the form of coaxially situated mesh conical shell with an elliptical bottom. 2. The saturator according to claim 1, characterized in that the nozzles for supplying and discharging liquid are interconnected by a circulation pump. 3. The saturator according to claim 1, characterized in that the truncated cone is equipped with a sealing skirt, the outer surface of which is parallel to the inner surface of the conical shell.

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