RU2356844C1 - Device to produce and feed water-gas mix into treated water volume - Google Patents

Abstract

FIELD: water-supply.

SUBSTANCE: invention relates to the equipment designed to treat and purify water and can be used in oil and gas production, oil and gas processing, chemical industries, metallurgy, pulp-and-paper industry, food production and other branches of national economy. The proposed device comprises a vertical pipe with its lower end submerged into treated water and an additional pipe arranged aligned with vertical pipe upper end. Note that the vertical pipe upper end communicates with the gas space, while the additional pipe lower end communicates with the water feed pipeline and its lower end accommodates a diffuser. Note that right below the latter, a tape-like stream-lining is arranged coaxially and with a gap, the taper apex angle being directed upward. Note also that the taper apex angle exceeds that of the diffuser apex angle.

EFFECT: higher quality of water purification.

1 cl, 1 dwg

Description

The invention relates to techniques for the treatment and purification of water and can be used in oil and gas, oil and gas refining, chemical, metallurgical, pulp and paper, food and other industries

A device for cleaning liquid is known (see RF patent No. 2222495, MKI7 C02F 1/00, BI No. 3, 2004), in which the device in question for receiving and supplying a gas-liquid mixture into the volume of the processed liquid is made in the form of a vertical pipe with flooded the processed fluid with a lower end and with a confuser on the upper end, under which a screw blade is installed.

The prototype is a flotator (see RF patent No. 2228910, MKH7 C02F 1/24, BI No. 14, 2004), in which the device in question for receiving and supplying a gas-water mixture into the volume of treated water contains a vertical pipe with a lower end flooded in the treated water and the upper end is connected to the water supply pipe, and an additional pipe coaxially mounted at the upper end of the vertical pipe and in communication with the gas space.

A common disadvantage of these devices is the low quality of the processing and purification of the liquid due to the low efficiency of gas suction from the gas space into the vertical pipe by the flow of the source liquid falling in this pipe.

The task of the invention is to improve the quality of water treatment.

The task is carried out by the fact that in the device for receiving and supplying a gas-water mixture into the volume of the treated water, comprising a vertical pipe with a lower end flooded in the treated water and an additional pipe coaxially mounted at the upper end of the vertical pipe, according to the invention, the upper end of the vertical pipe is in communication with the gas space , the upper end of the additional pipe is connected to the water supply pipe, and a diffuser is mounted on its lower end, under which a cowl is installed coaxially and with a clearance in the shape of the cone facing upward, and the angle at the apex of the fairing cone is greater than the angle of the cone at the apex of the diffuser.

The drawing shows the proposed device for receiving and supplying a gas-water mixture in the volume of treated water.

The device comprises a vertical pipe 1, the lower end of which is immersed in the treated water, and an additional pipe 2, coaxially mounted at the upper end of the vertical pipe. The upper end of the vertical pipe 1 is made open and communicated with the gas space, and the upper end of the additional pipe 2 is connected to the pipeline 3 for supplying the source water. At the lower end of the additional pipe 2, a diffuser 4 is mounted, under which a cowl 5 in the form of a cone facing upward is coaxially and with a clearance. The angle at the apex of the cone of the fairing 5 is greater than the angle of the cone at the apex of the diffuser 4, as a result of which a narrowing annular channel 6 is formed between the walls of the fairing and the diffuser.

A device for receiving and supplying a water-gas mixture to the volume of treated water works as follows.

The pressurized water to be treated and cleaned of solid and liquid impurities flows through a pipe 3 into an additional pipe 2 from above, from which it goes into a tapering annular channel 6 between the walls of the diffuser 4 and the fairing 5. In channel 6, the water flow rate increases, and the resulting The water jet creates a stable curtain in the form of a hollow truncated cone with its top pointing upwards. When it hits the inner wall of the vertical pipe 1, a water jet is reflected downward, pushing particles of gas from the gas space above the water curtain under this curtain. The water jet reflected from the wall of the vertical pipe 1 breaks up into small droplets, which, when falling down, draw gas under the water curtain into a joint downward movement and drive it into small particles in the water column of the flooded end of the vertical pipe. In this water column, gas particles in the form of bubbles are moved by a downward flowing water stream and pushed out of the vertical pipe 1 into the lower layer of the treated water. When floating up in the treated water, gas bubbles trap solid and liquid impurities, creating a foam on the interface.

Feasibility from using the invention is achieved by improving the quality of the gas treated and purified from solid and liquid impurities. It became possible thanks to

connecting the upper end of the additional pipe to the water supply pipe, which ensures an increase in the speed of the flow of water entering the vertical pipe;

the execution of the upper end of the vertical pipe open, which ensures direct contact of the flow of water entering the vertical pipe with the gas space;

installing at the lower end of the additional cone of the diffuser and a fairing placed under it with an angle at the apex of the cone exceeding the angle at the apex of the cone of the diffuser, which ensures a high rate of flow of a water stream from the annular channel between the walls of the diffuser and fairing, giving this stream a directed movement on the wall of the vertical pipe at an angle exceeding 90 °, and intensive pushing of gas particles under a water stream.

Claims (2)

1. A device for receiving and supplying a water-gas mixture to the volume of water to be treated, comprising a vertical pipe with a lower end flooded in the treated water and an additional pipe coaxially mounted at the upper end of the vertical pipe, characterized in that the upper end of the vertical pipe is in communication with the gas space, upper the end of the additional pipe is connected to the water supply pipe, and a diffuser is mounted on its lower end, under which a cone in the form of a cone facing the top is mounted coaxially and with a gap hydrochloric up. 2. The device according to claim 1, characterized in that the angle at the apex of the fairing cone is greater than the angle of the cone at the apex of the diffuser.