SU1551404A1 - Adsorption generator - Google Patents

Abstract

The present invention relates to devices for producing a compressed oxygen-enriched gas from air by fast-cycle adsorption using heat-free adsorption used in the medical and microbiological industries, and allows oxygen-enriched gas of constant volumetric composition to be compressed by separating air by stabilizing its pressure. The generator contains a compressor 1, switching valves 2-4, check valves 5-8, connecting pipelines, the drying unit 9 connected in series, and, through valve 3, the purge adsorber 10 and producing adsorber 11, unit 12, the outputs of which are connected by switching valves 2-4 and inputs with pressure sensors 13 and 14 in adsorbers 10 and 11, respectively, tank 15 connected via valves 2 and 4 to compressor 1 and the atmosphere, respectively, inside which is located a variable capacity receiver 16 connected through check valves 7 and 8 with ads 11 and a generator outlet, a vacuum pump 17 and a collector 18 connected to block 9 and, via check valves 5 and 6, to the reservoir 15 and the inlet of the vacuum pump 17. 1 Il.

Description

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The invention relates to devices for producing compressed oxygen-enriched gas from air by short-cycle heat absorption by adsorption and can be used in the medical and microbiological industry.

The aim of the invention is to obtain an oxygen-enriched gas of a constant volumetric composition compressed with separable air by stabilizing its pressure.

The drawing shows a schematic diagram of the adsorption generator.

The proposed generator consists of compressor piping 1 connected, switching valves 2-4, check valves 5-8, drying unit 9, purge adsorber 10, producing adsorber 11, and also valve switching unit 12 4-4, temperature sensors 13 and 14 in adsorbers 10 and 11 respectively

Through valve 4, unused compressed air is discharged to the atmosphere. When a pressure equal to atmospheric pressure is reached in the adsorber 11, the check valve 7 is activated. The oxygen-rich 5 gas is directed to the receiver 16 (the receiver 16 increases in volume, and the air from the tank 15 is discharged into the atmosphere through the control valve 4). When the manifold pressure is 18, block .; 9

10, the adsorber 10 becomes equal to atmospheric, the gas flow between the adsorbers stops, the check valve 7 closes and the valve 6 opens, normally open at a given pressure. In adsorbers 10 and 11, vacuum recovery is carried out. The gas phase through the block 9 (at the same time the block 9 is regenerating from moisture), the collector 18, the valve 6 is pumped out by the vacuum pump 17 to the atmosphere. With a residual pressure of 0.05 H O5 Pa

15

and connected by pipelines of the tank 20, the sensor 14 sends a signal to the block 12, which 15 with the variable-capacity receiver 16, opens the valve 2 and closes the valves

cuum pump 17 and manifold 18.

The generator operates as follows 3 and 4. The cycle is repeated.

Control over derived parameters in known generators does not guarantee a constant composition of the product gas, since there is a constant pressure fluctuation in cycles around the specified ones. In the construction of the generator, the switching of technological stages occurs only when the maximum and minimum are reached.

The air to be separated enters compressor 1. Compressed gas through switching valve 2 (the other valves are closed) is directed to tank 15 with receiver 16, in which oxygen-rich gas is stored.

Through valve 4, unused compressed air is discharged to the atmosphere. When a pressure equal to atmospheric pressure is reached in the adsorber 11, the check valve 7 is activated. The oxygen-enriched gas is directed to the receiver 16 (the receiver 16 increases in volume, and the air from the tank 15 is discharged into the atmosphere through the control valve 4). When the manifold pressure is 18, block .; 9

0, the adsorber 10 becomes equal to atmospheric, the gas flow between the adsorbers stops, the check valve 7 closes and the valve 6 opens, normally open at a given pressure. In adsorbers 10 and 11, vacuum recovery is carried out. The gas phase through the block 9 (at the same time the block 9 is regenerating from moisture), the collector 18, the valve 6 is pumped out by the vacuum pump 17 to the atmosphere. With a residual pressure of 0.05 H O5 Pa

0 sensor 14 sends a signal to block 12, which opens valve 2 and closes valves

five

3 and 4. The cycle is repeated.

Control over derived parameters in known generators does not guarantee a constant composition of the product gas, since there is a constant pressure fluctuation in cycles around the specified ones. In the design of the generator, switching of technological stages occurs only when the maximum and minimum

from the previous technological cycle, the pressure set by the conditions of the process, which guarantee a constant composition of the compressed gas.

Claims (1)

Claims of the invention The adsorption generator is supplied to the adsorber 10 filled with synthetic zeolite NaX. At the same time, the check valve 8 is actuated. A combination of pressure in the tank 15 leads to a decrease in the volume of the receiver 16 and the corresponding compression of the oxygen-enriched gas there. With a pressure of not less than 3.5-10b Pa (volume ratio of adsorbers 1: 1), 35 oxygen-enriched gas, non-return valve 5 and air are activated by a collector-containing compressor, switching 18, closing valve 6, through block 9 drying and non-return valves, connecting pipelines connected in series by the drying unit and through the switching valve the purge and producing admitted oxygen-enriched gas 4 and sorber; the valve switching unit and from the receiver 16 through the valve 8 a vacuum pump is supplied, characterized in that at the output of the generator to the consumer. The introduction of the compressed gas mixture into the adsorber 10 with the oxygen-enriched air given by the predominant absorption of gas of a constant volumetric composition due to nitrogen and the enrichment of the gas phase with the acid stabilization of its pressure, it is additionally. When the pressure in the adsorber is 10, it contains a reservoir with a receiver variable 3.5-10b Pa, the sensor 13 sends a signal to the voyage, collectors and two sensors block 12, which closes the valve 2 and og-pressure, the inputs of which are connected corresponds to the valves 3 and 4. The gas mixture is with purge and producing belt composition (variable composition of the adsorbers, and the outputs - with the inputs of caught by a concentration gradient of 50 switchings, the outputs of which are connected to the height of the sorbent layer) due to the difference and s-switching valves, while the reservoir cavities are connected through the switching valves to the compressor and the atmosphere, and through the return valve to the collector connected to the zeolite drying unit inlet NaX. A further 55 occurs through a non-return valve with a vacuum inlet of nitrogen, the gas phase is enriched with the pump, and the receiver is connected via reverse with oxygen, and the sorbent valve with an outlet producing an adhesion front over the height of the bed. At the same time sorber and generator output. in the producing adsorber 11, 0.05-10 & Pa) valve 3 enters the adsorber 11, filled with synthetic days of the process that guarantee a constant composition of the compressed gas. Claims of invention An adsorption generator of compressed oxygen-enriched gas containing a compressor, switches