Process Description The gaseous feedstock is compressed by a multistage compressor 5, to one of the stages of which the regeneration gas is supplied. Part of the hot compressed gas is supplied to adsorber 2, which is in the first stage of regeneration. From adsorber 2, the compressed gas containing desorbed water vapor is mixed with the rest of the compressed gas and sent to refluxer 6 for cooling and separation, cooled by a refrigerant. Condensate and separation gas are discharged from refluxer 6. The latter is fed into adsorber 1, which is in adsorption mode. The dry compressed gas is discharged from adsorber 1, the main part of which is directed to the consumer , and the other part is throttled at device 7 and fed to adsorber 3, which is at the second stage of regeneration, from which the regeneration gas containing residual water vapor is discharged and directed to one of the stages of compressor 5. After completion of second regeneration mode, adsorber 4 is in cooling mode.
Process features
Use of composite adsorbents with alumina or silica matrix, promoted by d-metal chloride
Pre-regeneration of adsorbent by purging with compressed gas
Recycle of regeneration gas
Technical Specification
Dried gas pressure: 0.1–0.6 MPa
Pressure of compressed dry gas 3–10 MPa temperature 5–25 Сº
Residual moisture content in dry gas 1–9 mg/m³
Patents of the Russian Federation No. 160890, 2504424, 2549845, 2551488, 2564285, 2564808, 2565169, 2568210, 2568704, 2600345