SU1267244A1 - Method and apparatus for determining moisture content of liquid mixtures - Google Patents

Abstract

The invention relates to the field of determining the moisture content of liquid mixtures, such as oil, and can be used on process streams. oil producing, oil refining, petrochemical, chemical and other industrial sectors. The purpose of the invention is to increase the efficiency and accuracy of determination. The proposed method consists in feeding the liquid mixture into the evaporation chamber by spraying it on a heated surface. The resulting Condensate is fed through a detector, in which a vacuum is created, maintaining a constant level at the outlet of the liquid mixture and condensate in the chamber and the detector, and the liquid reagent is supplied to the detector and the moisture content of the liquid mixture is determined by the reaction temperature of its interaction with water. A device for implementing the method comprises a plug-in chamber equipped with a spray gun, an inclined plane heated by heaters, level gauges, a refrigerator, a liquid reagent dispenser, a thermostat, and a secondary device. The inlet of the refrigerator is connected to the Vapor output channel (L evaporation chambers, and its output with the detector, which in turn C is connected to the liquid reagent dispenser and vacuum pump. Thermal sensor 5 is connected to the secondary device. Level- {im nemer associated with valves. The invention allows continuous measurement: 10: moisture measurement of mixtures in the range of up to 100%. 2 cf files, 1 class NP 4: 4

Description

The invention relates to the determination of the moisture content of liquid mixtures, such as oil, and can be applied to process streams in the oil-producing, oil-refining, petrochemical, chemical, and other industries.

The purpose of the invention is to increase the efficiency and accuracy of the determination.

The method is carried out as follows.

The liquid mixture at a constant flow rate is fed into the mixing chamber, where it is evenly sprayed onto the heated surface. The temperature inside the evaporation chamber is maintained at 150 ° C. The uniform spraying of the liquid mixture on the heated surface and the high temperature inside the mixing chamber promotes instantaneous evaporation of all moisture (water) and some components of the liquid mixture.

The resulting vapors are sucked off by a vacuum created by a vacuum pump in the detector, which is hermetically connected to the chamber for inverting through a refrigerator.

The vapors, passage through the refrigerator, are condensed. Condensate with the required temperature enters the detector.

To maintain a vacuum in the system, constant levels of the liquid mixture and condensate are maintained at their exit from the vacuum chamber and detector. The detector also supplies a liquid reagent selectively interacting with water with the absorption (absorption) of heat.

A change in the reaction temperature corresponding to the amount of water in the condensate is measured by a thermal receiver and is recorded by a secondary device.

The amount of water in the condensate with some lag (due to transport lag) corresponds to the amount of water in the incoming liquid mixture in the evaporation chamber, i.e., measuring the moisture content of the condensate, determine the moisture content of the liquid mixture.

The drawing shows a functional diagram of the device that implements the proposed method.

The device consists of a camera; for evaporation 1 fitted with a spray gun. 2, inclined plane 3, heaters 4 and 5, valves 6, 7

and a level gauge 8, a refrigerator 9, a detector 10 equipped with a temperature sensor 11, a level gauge 12 and a valve 13, to a jam of the reagent 14, a thermostat 15, a vacuum pump 16 and a secondary device 17.

The inlet of the refrigerator 9 is connected to the outflow channel of the vapor generated in the chamber 1, and its outlet is connected to the detector 10, which in turn is connected to the liquid reagent metering unit 14 and the vacuum unit 16. The thermal sensor 11 is connected to the secondary device 17.

 Level gauges 8, and 12 are associated with valves 7 and 13, respectively.

The device works as follows.

A liquid mixture, such as oil, is continuously charged through valve 6 and sprayer 2 into the evaporation chamber 1 heated by heaters 4 and 5 to 15,000, where it is sprayed evenly onto the upper part of the inclined plane 3 and flows into the lower part of the level gauge 8 and output channel.

The gauge 8 by means of the valve 7 maintains a constant level of oil flowing down the inclined plane 3 and the overlapping outflow channel, thereby providing a vacuum in the evaporation chamber 1 formed by the vacuum pump 16 in the detector-cooler-fume chamber.

The dehydrated oil is uniformly removed through valve 7.

The mixture of water vapor and gasoline is vacuum fed into the refrigerator 9, where they condense and take the required temperature, and then enter the detector 10. The latter also maintains a constant level of liquid through the level gauge 12 and valve 13, which provides a vacuum in the detector. From the detector 10, the liquid is evenly removed through the valve 13. From the dispenser 14 to the flow of condensate flowing through the detector 10 (continuous, pulsed), a liquid reagent selectively interacting with water is released with the release of heat. The reaction temperature of the interaction of the liquid reactant with water is dependent on the amount of water in the condensate.

Claims (2)

Claim . 1. The method of determining the humidity of liquid mixtures, which consists in feeding the liquid mixture into the chamber, heating it, transporting the vapors generated through the refrigerator, introducing the reagent 'and taking measurements in the detector, characterized in that, in order to increase the efficiency and accuracy of determination, the supply of the liquid mixture carried out continuously by spraying it onto a heated surface, the condensate formed is fed through a detector in which a vacuum is created, a constant level is maintained in the chamber and detector at the exit of the liquid mixture, and ndensata and fed into the detector liquid reagent.i at a reaction temperature of its interaction with the water contained in the condensate liquid mixture is determined humidity. 2. A device for determining the moisture content of liquid mixtures, comprising a chamber for evaporating with heaters and channels for input and output of a liquid mixture and for outputting the generated vapors, a detector with a temperature sensor placed in a thermostat, a dispenser and valves installed on the line for input and output of the liquid mixture, a refrigerator, connected to the evaporation chamber, and a secondary device connected to the temperature sensor, characterized in that, in order to increase the efficiency and accuracy of determination, it is equipped with 15 sprayers placed in the evaporation chamber liquid mixture, under which an inclined surface with a heater is installed, the first level gauge located in the lower part 20 of the inclined surface in front of the liquid mixture outlet valve, the second level gauge located in the detector, the dispenser for supplying the liquid reagent to the detector installed in the thermostat with 25 valves mounted on the condensate outlet line and detector, vacuum pump suction port connected to the detector, wherein the first transmitter is connected to a valve ₃₀ installed on the outlet line a liquid mixture, and WTO second transmitter coupled to a valve mounted on the outlet line from the condensate detector.