RU2248839C2 - Device of gasses drying by freezing-out - Google Patents

Abstract

FIELD: gas-production industry and petrochemical industry.

SUBSTANCE: the invention presents a device for drying of gases by freezing-out and is dealt with the field of gasses drying devices. The device includes a vortex pipe, pipelines with the fixture, freezing out heat exchangers, a gas-distributing device mounted with a capability to feed either cool, or a hot gas from the vortex pipe into coiled pipes of heat exchangers. At that the inter-pipe space of the heat exchangers is connected with a pipeline of the humid gas delivery and a pipeline of the dried gas withdrawal. The vortex pipe is connected with a pipeline of the dried gas withdrawal and the coiled pipes outlet is connected with the pipeline of the dried gas withdrawal through an ejector. The device in addition has a pipeline connecting the pipeline of the humid gas reception through an adsorber with the pipeline of the dried gas withdrawal. The lower parts of the heat exchangers are used in the capacity of water-oil separators. The invention ensures an increase of efficiency and reliability of the device operation.

EFFECT: the invention ensures increased efficiency and reliability of the device operation.

3 cl, 1 dwg

Description

The invention relates to a device for drying gases and can be used in various industries related to the use of gases.

A device for drying gases by freezing, including a vortex tube, apparatus for drying gases and pipelines with fittings [1].

The disadvantages of the known devices are lack of efficiency and reliability.

The aim of the invention is to increase the efficiency and reliability of the device.

This goal is achieved by the fact that in a device including a vortex tube, apparatus for drying gases and pipelines with fittings, freezing heat exchangers are used as apparatus for drying gases, and there is also a gas distribution device. The gas distribution device is installed with the possibility of providing communication coils of heat exchangers with either a cold vortex tube line or with a hot one. The annular space of the heat exchangers communicates with the wet gas intake line and with the dried gas supply line. The vortex tube communicates with the discharge line of the dried gas. The output lines from the coils communicate with the delivery line of the dried gas through the ejector.

In addition, there is a line for establishing the operating mode, passing from the wet gas receiving line to the vortex tube through the adsorber.

In addition, the lower parts of the heat exchangers are water-oil collectors.

The invention is illustrated in the drawing, which shows a diagram of a device for drying gas by freezing.

The device for drying gases will be considered in relation to the drainage of air. It includes heat exchangers 1 and 2, a vortex tube 3, an air distribution device 4, an ejector 5 and a wet air intake line 6, a supply of dried air 7, a supply of dried air 8, cold air 9, hot air 10, and hot air discharge 11 to the vortex tube 3. , the establishment of the operating mode 12, the latter connects the wet air intake line through the adsorber 13 with the dried air supply line. The lower parts of heat exchangers 1 and 2 are water-oil collectors 13 and 14, respectively. There are also control valves 15-25 (22-25 of them are three-way).

Moist air through line 6 enters one of the heat exchangers (in this case, heat exchanger 1), passing through which it contacts its coil, it cools and air moisture freezes and precipitates in the form of ice crystals on the coil. Moisture-free air enters line 7 and on to consumers.

Part of the dried air through line 8 is fed into the vortex tube 3, where it is divided into cold 9 and hot 10 flows. The cold stream passing through the switchgear 4, in which the valve 26 is installed as shown in the drawing, is sent to the coil of the heat exchanger 1, where it removes heat from the drained air, from where it flows to the ejector 5, which is sucked into line 7 and then sent to consumers . Hot air through line 10 through the switchgear moves into the coil of the heat exchanger 2, heats it. A "fur coat" of ice crystals is melting. Melt water with oil and other contaminants is collected in the oil and water collector 14, from where it is removed through the valve 18. After removing the “coat” from the coil of the heat exchanger 2, the supply of hot air to it is stopped by sending it with a three-way valve 25 to the discharge line 11. After the formation of a “fur coat” on the coil of the heat exchanger 1, the functions of the heat exchangers change: freezing is established on the heat exchanger 2, thawing of the “fur coat” on its coil is installed on the heat exchanger 1.

Dried air is supplied to the vortex tube 3 in order to prevent freezing of ice on line 9 along the path of passage of cold air. In this regard, during the start-up of the device from line 6 with a three-way valve 24, air is sent to the adsorber 13, where it is freed of moisture on the adsorbents and sent through the three-way valve 22 to the vortex tube 3. After the operating mode has been established with the three-way valve 23, line 12 is closed.

The use of the proposed device can improve the efficiency of air purification from moisture and the reliability of the device compared to the prototype.

Sources of information

1. Pat. RF №2004882, IPC F 24 F 3 / 14,1993. Bull. No. 28.

Claims (3)

1. The device for drying gases by freezing, including a vortex tube and apparatus for drying gases, pipelines with fittings, characterized in that as devices for drying gases used freezing heat exchangers, additionally there is a gas distribution device installed with the possibility of supplying heat exchangers either cold or hot gas from the vortex tube, while the annular space of the heat exchangers communicates with the wet gas intake line and the dried gas supply line, vortex tubes communicates with the dispensing line dry gas, and the output of the coil communicates with the dispensing line dry gas through the ejector. 2. The device according to claim 1, characterized in that it further has a line connecting the wet gas reception line through the adsorber to the dry gas delivery line. 3. The device according to claim 1 or 2, characterized in that in it the lower parts of the heat exchangers are used as water-oil separators.