DRYING PIPELINE INSIDE Russian patent published in 2015 - IPC F26B7/00 F17D3/12 

FIELD: process engineering.

SUBSTANCE: main pipeline is dried to decreased moisture content in drying air with the help of air driers. The latter are installed at bypass lines of line valve assemblies of pipeline to be dried. Blowing is performed unless dew point temperature is reached at dried pipeline outlet. Then, bowing is terminated for at least 12 hours. Thereafter, blowing is resumed with continuous measurement of moisture content in drying air. In measurement, time moment is registered whereat moisture content in drying air exceeds specified dew point temperature. Then, distance from water accumulation area to dried pipeline start is defined. Water is removed from water accumulation areas to proceed with blowing is dried pipeline unless required air dew point temperature is reached.

EFFECT: makes efficiency of drying higher.

1 dwg