The way desiccant compressed gas and desiccant compressed gas

 

The invention relates to systems for drying the stream of compressed gas. The gas stream is compressed in the compressor, cooled, mixed with the flow, compressible additional compressor to a pressure higher than the pressure after the main compressor, served in the air dryer, and then to the consumer. Suction nozzle of an additional compressor can be attached to the outlet nozzle of the air. Outlet additional compressor can be connected through the expander to the output channel of the main compressor before the air dryer. The extender may be made in the form of the vortex tube. The hot end of the vortex tube can be connected to the inlet pipe of the main compressor and to the inlet pipe of the consumer. The use of the invention allows to simplify the design and to drain the large flow of wet gas without pressure loss. 2 C. and 7 C.p. f-crystals, 6 ill.

The invention relates to the field of creation of equipment for drying compressed gas, for example compressed air.

The known method of operation of the desiccant compressed gas [1], which includes a pre-cooling portion of the consumed gas flow due to its submission to the extender, Mykolaivna this method in the device [1], contains a source of compressed gas, the expander and the air dryer.

In the known device as extender-cooler uses a double-flow vortex tube. This allows a very efficient dehumidification of the air.

However, the cooling gas in the vortex tube is connected with the inevitable pressure drop of the refrigerant gas, which does not allow to realize the most advantageous mode of drainage flow through the mixing of two streams - cooled and cold. Therefore, to avoid the pressure drop in the main thread in such a device with vortex tube introduces two heat exchanger (cooling and regenerative), separating these threads. This is a disadvantage.

In addition, both flow vortex tube (hot and cold), lost pressure during expansion, after use is discharged into the atmosphere, which is spent sometimes more than 20% of the total air flow. It is also a disadvantage.

The present invention is to reduce these disadvantages.

The problem is solved in that the extender serves gas from an additional source, for example from an additional compressor, with pressure higher than mainly photodetected due to the possibility of cooling flow by simple mixing of two streams - warm the cooled cooling and cold. This allows to exclude from the design of the extra heat exchanger, and also to reduce the total loss of gas required for dehydration.

This is the technical nature of the invention, the end result of which is to increase productivity of the device and its simplification.

The proposed method is implemented in a structure, which contains an additional source of compressed gas, such as a compressor, with a working pressure higher than in the source.

Arranged the proposed construction in the following way (Fig.1).

The compressed gas source 1 (blower, compressor, pipeline, well and others) through the condenser 2 is attached to the tee-mixer 3. To the same mixer 3 through pneumatocele 4 and refrigerator 5 attached another (additional) source of compressed gas 6, which has a working pressure higher than in the primary source 1. The output of tee-mixer 3 via the separator 7 is connected with the consumer 8 dry gas. The separator has an inlet 9 and outlet 10 nozzles. Sub source (auxiliary compressor) has an input (suction) nozzle 11 and an output 12.

Analyzed the donkey of the main compressor 1 is cooled in the refrigerator 2 and is supplied to the mixture in the mixer 3. Here through the condenser 5 and pneumatocele 4 receives compressed air from the secondary compressor 6, which has a working pressure higher than in the main compressor 1. For example, the compressor 1 has a standard working pressure of 6 bar (standard pressure of air supplied in the usual factory airset), and the compressor 6 may have a pressure of 30 ATM. Passing through pneumatocele 4, chilled in the refrigerator for 5 high-pressure gas is choked with 30 to 6 bar and is cooled. Mixing in the mixer 3, the main warm stream wholived from chilled in pneumatocele 4 additional flow. Formed in the cold mixture is condensation, which is separated in the separator 7, after which dehumidified air is delivered to the consumer 8.

According Fig. 1 8 consumer receives compressed air from the compressors 1 and 6. But since the compressor 6 is designed to work only on cooling your own thread, but it is forced to continuously suck the outside air wet, it turns out that the system continuously put additional moisture, the removal of which requires extra energy (including the compensation of the latent heat of condensation). This is compressor (supercharger) 6 serves part of the dry gas, coming out of the separator 7. For this purpose, the suction nozzle 11 of the additional compressor (supercharger) 6 is connected to the outlet nozzle 10 of the separator 7 through the tee splitter 13. As a result, the input of the compressor 6 begins to act only dry air, and this reduces the total amount of moisture supplied to the input 9 of the separator 7, which improves the operating conditions of the dryer.

It is possible to work such a drier, in which the extender is not pneumatocele, and vortex tube 14 having an input 15, a hot 16 and 17 cold pipes [2].

Despite the fact that vortex tubes have a higher efficiency compared to pneumatocele, but they are more sensitive to moisture contained in the supply gas. Therefore, on their entrance you must put an additional separator 18, because when compressed dried air from 6 to 30 ATM humidity of the cooled compressed air is again increased to 100%.

Vortex tube 14 can operate in either a two-line, either in single-threaded mode. When working in dual stream mode, the hot stream emerging from the nozzle 16, or discharged into the atmosphere or fed through a tee-mixer 19 to the inlet of the main compressor 1 (Fig. 3). This is when working in single-threaded mode hot tube 16 is covered by the cover 20 (Fig. 4).

To reduce the cost associated with the loss of cold resetting the consumer cold drained thread, you need this cold to recover. To this end coming out of the air 7 dry cooled gas should be sent as a reverse flow 21 recuperative heat exchanger 22. As a live stream 23 in such a heat exchanger is a gas flow supplied from the compressor 1 through the condenser 2 in tee-mixer 3 (see Fig. 5).

When this warm core (straight) thread 23 in the heat exchanger 24 is pre-cooled from the cold stream 21 exiting the water separator 7. This allows you to continuously return the cooled stream 23 cold, losing at the outlet of the air dryer, which increases the efficiency of the dehumidifier.

Warm stream coming from the hot pipe 16 of the vortex tube, you can directly give the consumer a hot stream or added to the main thread using the tee-mixer 25 (Fig. 6).

In all the above constructions to the compressor 6 through the tee-separator 26 can optionally connect consumers high pressure 27.

In General, the invention allows to drain large flows of moist air, methane, and the spring. This expands the technological applicability of the invention. In addition, it is possible to eliminate one heat exchanger. This simplifies the design.

Sources of information 1. Piralishvili W. A., Sofronov, A. N., Mikhailov centuries Installation of compressed air drying. Patent RU 2015463, F 25 B 9/02 from 28.01.1991.

2. Merkulov, A. P. Vortex effect and its application in engineering. M: Mechanical Engineering, 1969.

Claims

1. The way desiccant compressed gas, comprising pre-cooling part of the flow due to its submission to the extender, the cooling of the main stream from the cooled part and the selection of the condensed moisture in the dryer, characterized in that the expander serves gas from an additional source, for example from additional compressor with a pressure higher than the main thread.

2. The way desiccant compressed gas under item 1, characterized in that the cold stream exiting the expander, is mixed with the main stream and directed into the separator.

3. The way desiccant compressed gas under item 1, characterized in that the suction pipe of an additional compressor (supercharger) serves drained the gas out of the separator.

4. Dehumidifier with an additional source of compressed gas, for example, a compressor with a working pressure higher than in the source.

5. The desiccant compressed gas under item 4, characterized in that the suction nozzle of an additional compressor (supercharger) attached to the outlet nozzle of the air.

6. The desiccant compressed gas under item 4, characterized in that the outlet of the additional source of compressed gas by means of a mixer is connected via the extender to the output channel of the main source of compressed gas to the separator.

7. The desiccant compressed gas under item 4, characterized in that the extender is made in the form of the vortex tube.

8. The desiccant compressed gas under item 7, characterized in that the hot end of the vortex tube connected to the outlet nozzle main source of compressed gas.

9. The desiccant compressed gas under item 7, characterized in that the hot end of the vortex tube connected to the inlet pipe of the consumer drained of compressed gas.

 

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