SU1000054A1 - Unit for vacuum degassing of water - Google Patents

Description

(54) INSTALLATION OF WATER VACUUM DEAERATION

one

The invention relates to a technique for the degassing of water and can be used to remove dissolved hydrocarbons (in particular oxygen) from water in the oil, energy, food and other sectors of the population.

Closest to the proposed technical essence and the achieved result is the installation of vacuum deaeration of water, including a degasser with nozzles for supplying water and discharging water and gas, a nozzle, a spray bar, a liquid level regulator, a vacuum pump 1.

The disadvantage of this installation is the possibility of water getting inside the vacuum pump on its working bodies and, as a result, their breakdown, for example, when the automatic installation elements come out of the system, which regulates the water level in the degasser.

The purpose of the invention is to ensure safe working conditions and durability of the vacuum pump by eliminating the possibility of water getting into it, i.e., increasing the durability and reliability of the installation as a whole.

This goal is achieved by the fact that the installation of vacuum deaeration of water is known, which contains a degasser with water inlet and outlet pipes for water and gas, a nozzle, a sprinkler, a level regulator, a vacuum pump, a sealed container partially filled with water, and a pipe, the upper open end which is located below the gas outlet pipe and communicates with the degassing cavity, and the lower open end is located below the water level in a sealed container, with the cavity above the water level in the vessel communicating with the atmosphere.

It is advisable for ease of operation in the winter time the tube and container should be kept inside the degasser.

The drawing shows the installation of vacuum deaeration of water, the cut.

Claims (2)

The installation contains a degasser 1, a HMejo squander 2, a water inlet, sprays2 "valve 3, a nozzle 4 (lower and upper), 5 a water outlet, a gas outlet 6, a regulator 7 level, a sensor 8 of the lower limit level, as well as a vacuum pump 9 vacuum pump in degasser 1, pump 10 pumping out water from the degasser, a pipe 11 connected to a sealed container 12. The tank 12 has a nozzle 13 connected to the atmosphere or to a drain pipe 14. When placing the pipe 11 inside the degasser, its upper end can be provided with, for example, a visor 15, p en favoring the introduction into the tube 11 Kanel water flowing from the nozzle 4. The device operates as follows. The initial water enters the degasser 1 through the water inlet 2 and through the sprinkler 3 enters the lower nozzle 4. The stack through the nozzle, water due to the vacuum created in the degasser 1 by the vacuum pump 9, is released from the gases dissolved in it and enters the lower part of the degasser 1, from where the pump is fed to the consumer. The sucked gases are removed from the degasser 1 through the nozzle 6, the passage is pre-upper nozzle 4, which plays the role of a drift separator. To regulate the water level in the degasser, a level 7 regulator is provided that maintains the water level within certain limits. When a level regulator fails and the water level in the degasser is lowered to the lower limit level, a sensor of the lower limit level is triggered, which will stop the pump 10 abnormally, pumping water out of the degasser 1. When the water level in the degasser rises and the level regulator fails, it can be prevented the flooding of the nozzle 4 and the ingress of water through the nozzle 6 into the vacuum pump 9. The ingress of water into the vacuum cavities of the operating pump 9 will inevitably lead to its complete failure, to breakage of the working parts that cannot be restored eniyu. The pipe 11, the upper open end of which is installed below the nozzle 6, for example, below the nozzle 4, allows the water to be drained from the degasser unhindered even if there is a vacuum in the degasser, since the internal diameter of the pipe is designed for maximum water consumption in the degasser, and the pipe height or more than the magnitude of the rarefaction in the gas generator, expressed in meters of water of the nggo column. The lower end of the pipe 11, which is rigidly connected to the airtight container 12, is lowered below the WATER level in the tank, and the water surface area in the tank is selected so that the product of the product per unit length of the pipe 11 below the water level is greater than the internal volume of the pipe in the same units. The location of the sealed container 12 must be such as to ensure the required height of the pipe. So, if the residual pressure in the degasser is 0.05 kgf / cm (0.005 MPa), the height of the pipe from the water level in the sealed container 12 to the upper open end of the pipe must be at least 9.5 m. In the absence of a vacuum in the degasser, the water level in the tank 12 and the pipe 11 is the same. When creating a vacuum in the degasser 1, the water level in the pipe 11 will increase, since the open end of the pipe communicates with the internal cavity of the degasser, and the gas cavity of the tank 12 is connected by a pipe 13 to the atmosphere or to the drain pipe 14, which maintains a pressure close to atmospheric. The maximum level in the pipe 11 will be numerically equal to the vacuum generated by the vacuum pump 9 in the degasser I, and the water column expressed in meters. When the water level in the degasser 1 rises abnormally, for example due to an exit from the controller 7, the water level in the degasser will reach the upper open end of the pipe 11 and as the level rises further, water from the degasser will flow into the pipe I, drain through it into an airtight container, and from it by gravity, for example into the drain pipe 14, thereby ensuring safety of operation pump 9, preventing water from entering it. How the water level in degasser 1, in the presence of pipe 11, does not exceed the level of its upper open end. This will allow to keep intact the vacuum pump 9, which is the most expensive element of the entire installation of vacuum deaeration of water. The proposed device will simplify and cheapen the automation system of the installation, as well as improve the reliability and safety of the installation of vacuum deaeration of water in general. Claims. Installation of vacuum deaeration of water, containing a degasser with nozzles for supplying water and discharging water and gas, a nozzle, a sprinkler, a water level regulator, a vacuum pump, characterized in that, in order to ensure durability and reliability of the installation by eliminating the possibility of water vacuum pump, the installation is equipped with a sealed container, partially filled with water, and a pipe, the upper open end of which is located below the gas outlet pipe and communicates with the degasser cavity, and the lower open end is placed below the water level in an airtight container, the cavity of the airtight container above the water communicating with the atmosphere. 2. Installation under item I, characterized in that the pipe and the sealed container are placed inside the degasser. Sources of information taken into account during the examination 1. Mutin F. I. and Makarov E. P. Installation of vacuum deaeration of water UDV-3000. Express information № 7. Seri HM-3 TsINTIKHIMNeftemash, M., 1980.