SU1386226A1 - Apparatus for degassing liquid - Google Patents

Abstract

The invention relates to devices for degassing a liquid from one gas and saturating it with another gas, and can be used in the chemical, oil refining, pharmaceutical industry, power engineering and other fields of technology to produce a liquid saturated with an inert gas in a continuous process. The goal is to saturate the liquid with the required inert gas (for example, nitrogen, helium), to reduce its consumption for saturation and to reduce the material consumption of the device design. The degasser is placed coaxially inside the dispenser, and the upper lid of the degasser is equipped with an annular perforated overflow plate. 1 dw., 2 tab.

Description

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The invention relates to devices for degassing a liquid and saturating it with another gas and can be used in the chemical, petroleum refining, pharmaceutical industry, power engineering and other fields of technology to produce a liquid saturated with an inert gas in a continuous process.

The purpose of the invention is to reduce the consumption of inert gas for saturation and reduce the material consumption of the device design.

The drawing shows a diagram of the device.

The device for degassing a liquid consists of a continuous degasser 1 with a bubbling column 2 and a liquid reflector 3, a trap 4, a vacuum pump 5, a centrifugal suction pump 6, a dispenser 7 with a spray 8, a pressurized gas supply system 9. The top cover of the degasser 1 is equipped with an annular perforated overflow plate 10 mounted to the walls of the dispenser, and the dispenser 7 is equipped with a centrifugal suction pump 11. The degasser 1 is looped with the dispenser 7 along a liquid line and coaxially placed inside the dozlzor.

The device works as follows.

Decontaminator 1 vacuum on magistrala, rali, passing through a trap 4, 35 vacuum pump 5 to the residual

20

25

thirty

pressure P 0.01-0.1 at. At the same time, an overpressure is created in the dispenser 7 by supplying a gas of pressurization equal to 1.1-1.2 of the required saturation pressure Рtrev For example, when nitriding dB Prpes 1 evil, the pressure is 1.1-1.2 at. The pressurized gas is fed to the dispenser 7 through a reducer or other device that ensures the constant pressure in the dispenser while continuously absorbing the pressurized gas through the degassed liquid flowing through the dispenser 7.

After that, in the bubbling column 2 serves the liquid and include the gas supply to the sparging. The centrifugal pump 6 is turned on and the degassed (and dehydrated from water dissolved at the molecular level in the case of degassing hydrocarbons or their mixtures) is pumped out of the degasser 1 into the dosing unit 7. 1Three in the degasser 1, the residual pressure is maintained

GROWTH of ATAM by supplying gas to sparging and simultaneously evacuating the degasser 1 through the upper cylinder. The liquid from the spray 8 flows to the bottom of the dispenser 7 through a perforated overflow plate 10. The centrifugal pump 11 is turned on and the liquid saturated with the required inert gas is pumped out.

A device for degassing a liquid with the injection of pressurized gas into the dispenser allows saturating the liquid up to 0.09-0.95. Flows Liquid through the dispenser 8 to the dispenser 7 allows saturation up to 0.95-0.97 Rrdv and perforated the plate increases this value to 0.97- -0.98. The three-stage filling of the liquid with the required inert gas ensures gas consumption reduction. In addition, placing the degasser inside the dispenser reduces the consumption of materials by eliminating the bottom of the dispenser, which is partially used as a degasser.

The advantages of the proposed device in comparison with the known ones are the possibility of carrying out the process in a continuous mode, reducing the gas consumption for sparging and saturation of the liquid, reducing the material consumption of the device design.

The device is tested in laboratory and bench conditions, for the experiment, kerosene T-1 and TC-1 are taken. The degasser is evacuated to “AT” at t 20 C. At the same time, an overpressure equal to 1.2 AT is generated in the dispenser. After that, kerosene is fed into the bubble column and gas is turned on for sparging. The centrifugal pump is turned on and the degassed liquid is pumped out of the degasser into the dosing unit. At the same time, a residual pressure of 0.03 atm is maintained in the degasser by supplying gas to sparging and simultaneously evacuating the degasser.

Experimental data are given

in tab. 1 o I

From tab. 1 that the three-stage process provides for the kerosene saturation with the required inert gas for 97-99% of the maximum possible.

Comparative data of the proposed and known devices are given in table. 2

Claims (1)

The technical and economic effect of the proposed device consists in the possibility of saturating the liquid with the required inert gas, reducing its consumption for saturation by 5-10 times and reducing the material consumption of the structure by 3-A times. Invention Formula A device for degassing a fluid, including a continuous degasser with a bubble column made in the form of a pipe, an inlet and The drain lines, the vacuum pump, the dosing unit and the bottom and with the spray gun connected to the drain line of the degasser and the pressurized gas supply system are different from the fact that, in order to reduce the consumption of inert gas for saturation and reduce the material intensity of the structure, the degasser installed coaxially inside the dispenser on its bottom and provided with an annular perforated plate placed between the degasser and the walls of the dispenser. Table 1 0.2 1.2 table 2 300 Continuous 950 Cyclic eleven  liquid TJ „ Gas