A sensor for run-time measurement of sorbent’s drop drift from glycol drying absorbers
UDC: 681.5:622.279
DOI: 10.33285/2782-604X-2022-1(582)-12-20
Authors:
MOSKALEV IGOR N.
1,
SEMENOV ALEXANDER V.1,
KHAPOV DMITRY A.2
1 S.Yu. Witte Moscow University, Moscow, Russian Federation
2 APZ named after P.I. Plandin, Arzamas, Russian Federation
Keywords: natural gas, gas-liquid flow, diethylene glycol, microwave resonator, dielectric constant, run-time carryover sensor
Annotation:
When drying natural gas using a liquid sorbent (for example, diethylene glycol, DEG), part of it in an aerosol form is carried away into the main gas pipeline. Under normal operating conditions, the carryover is 5...20 g/thou. m3, in non-standard opera-ting mode it shows several times increase. Therefore, it is necessary to control the drying mode by measuring and recording data on the amount of DEG’s carryover. A run-time DEG carryover sensor is proposed, consisting of a cylindrical microwave resonator, in the center of which there placed a filter that captures the aerosol. The amount of aerosol carried away per a unit of time is determined by the change of the resonator dispersion characteristics. Calibration is carried out by the gravimetric method. The filter is cleaned by dry gas while heating the filter. Such a sensor makes it possible to create a run-time metering of dropping liquid carryover and measure the density of the DEG aerosol flow within a few minutes at concentrations of ~10 g/thou. m3.
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