SU1669509A1 - Adsorber - Google Patents

Abstract

The invention relates to devices for the adsorption purification of gases and can be used in cryogenic systems for producing high purity inert gases. The purpose of the invention is to increase the gas purification efficiency by improving heat exchange and gas distribution. The adsorber includes a housing with inlet and outlet chambers, bundles of heat exchange tubes fixed in tube sheets. The adsorber is equipped with a gas inlet pipe connected through a compensator to the inlet nozzle, nozzles, transverse barriers set along the height of the body with a step equal to 0.2 - 0.5 lengths of heat exchange tubes. 2 Il.

Description

The invention relates to devices for the adsorption purification of gases and can be used in cryogenic systems for the production of high-purity inert gases.

The purpose of the invention is to increase the gas cleaning efficiency by improving heat exchange and uniform gas distribution.

1 shows the adsorber; Fig 2 - node installation nozzles.

The adsorber includes a housing 1, an inlet 2 and an outlet 3 chambers, a bundle of heat exchange tubes 4. filled with adsorbent granules, a pipe 5 for introducing the gas to be cleaned, passing through the tube grids of the inlet and outlet chambers, a nozzle 6 for the inlet of the gas to be cleaned, a compensator 7 connected to pipe 5 input gas to be cleaned, nozzles 8 installed on the lower grid of the inlet chamber 2, transverse partitions 9, hatch 10, purge pipe 11 nozzle 12 of the outlet of the cleaned gas, nozzles 13, 14, 15, respectively, inlet and outlet of the coolant and heat carrier Nozzles 8 are equipped ronshteynami 16. Step between partitions - and the length of pipes - b

The adsorber works as follows.

In adsorption mode, at first, coolant is fed through nozzle 13 into the annular space, passes zigzag between partitions 9 and is discharged through nozzle 15. Then through the nozzle 6 and compensator 7, the gas to be cleaned is fed into the pipe 5 to inject the gas to be purified, while the gas to be purified is temperature controlled by heat exchange with the coolant in the annular space and enters the inlet chamber 2. Thermostating of the gas continues in the inlet chamber 2 and it enters through the nozzles 8 into the tubes 4 of the tube bundle. The passage through the layer of adsorbent in the tubes 4, the gas is cleared of impurities enters the output chamber 3 and is removed from the adsorber through the nozzle 12 The heat released in the cleaning and thermostating processes, goes to evaporation of the coolant

AND

ABOUT

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so about

In the desorption mode, the flow of the gas to be purified is first shut off, then the coolant is removed from the annulus and is purged with coolant. In this case, the cavity filled with the adsorbent is evacuated. After desorption, the adsorber is reintroduced into the adsorption process.

Improving the efficiency of gas cleaning in the adsorber is achieved by improving the heat exchange between the coolant and the gas to be purified due to the partitions placed in the housing. The refrigerant uniformly washes the heat exchange tubes 4 both over the entire cross section of the apparatus and in height, leakage around the perimeter is eliminated, heat is more efficiently removed both during the cooling of the adsorbent and the heat of adsorption during the cleaning process, the adsorption capacity of the adsorbent increases. The region of effective heat exchange is the region at

but

the ratio is 0.2 - 0.5.

The gas inlet pipe 5. passing through the tube sheets helps to ensure that as it passes through it, the gas entering the purification dries out and thereby improves the gas cleaning efficiency.

ten

7 /

Due to the fact that gas is introduced into chamber 2 through pipe 6, compensator 7 and pipe 5, it is also possible to make the cavity of output chamber 3 available for maintenance and repair. To do this, a cover 10 is installed on the bottom of chamber 2.

The nozzles 8 at the entrance to the tubes A of the chamber 2 have an opening area equal to the cross-sectional area of the pipe with the adsorbent, which makes it possible to increase the cleaning efficiency.

Claims (1)

Invention Formula An adsorber comprising a housing, inlet and outlet chambers, a bundle of heat exchange tubes filled with an adsorbent attached to the inlet and outlet chambers, tube sheets, a gas inlet nozzle, characterized in that, in order to increase the gas cleaning efficiency by improving heat exchange and uniformity gas distribution, the adsorber is equipped with a gas inlet pipe passing through the tube sheets, with a compensator connecting the gas inlet nozzle to the gas inlet pipe, perforated with nozzles installed in heat exchange pipes, transverse partitions along the body height with a step equal to 0.2-0.5 lengths of heat exchange tubes. FIG. 2