SU842579A1 - Instrument for measuring concentration of oil and its derivatives in water - Google Patents

Description

The invention relates to the analysis of liquid media and, more specifically, to devices that serve to determine the content of oil and oil products in the waters drained from ships (single bilge and ballast), and can be widely applied in various industries - chemical refining, etc. A device for determining hydrocarbons in a liquid is known, containing a column for injecting it into solution, a device for finely dispersed distribution, a device for draining the liquid after separation from the solvent to m of body strength and photometric cuvu 1. The main disadvantage of the device is the duration of the process of separating the solvent from the water. The device closest to the technical essence of the invention for measuring the concentration of oil and oil products in water contains a dispenser of the water and solvent being studied, a unit for mixing water containing oil with the solvent connected to them, and separating water from the solvent that has absorbed the oil product installed behind this unit. analyzer and regenerator. The unit for: mixing water with the solvent is a magnetic stirrer driven by an electric motor. The unit for separating water from the solvent that has absorbed the heavy oils is made in the form of two flat glasses with a filter element 2 placed between them. The presence in this device of three self-contained units is an emulsifier. the first filter with a double filtration, the second filter with a settling tank - complicates its design, reduces the density, increases the path of the studied mixture. The purpose of the invention is to increase reliability and simplify the design. The goal is achieved by the fact that in a device for measuring the concentration in water of oil and petroleum products, containing a dispenser of test water and a solvent, a mixing unit of water containing oil and a solvent connected to them and separating water and solvent that absorbed the oil product, the infrared the analyzer and the regenerator, the blending unit is made in the form of rotation around its axis installed in a zenzite case with screw cutting on the inner surface of the inclined hollow cylinder of porous material. permeable to solvent and not permeable to water, with the supply pipe of the mixed substances passing inside the cylinder, and the lower end of the cylinder is closed by a spherical bottom, inside which are perforated partitions.

The porosity coefficient of the fluoroplast is 20–40%, and the pore diameter is 15–50 µm. The slope of the cylinder 35-55 to the horizon.

FIG. 1 is a schematic diagram of the device; in fig. 2 a unit for mixing water containing oil with a solvent and separating water from the solvent.

The device consists of a filtering device 1, metering devices 2 and 3, respectively for the sample of the test liquid and solvent, unit 4 for mixing the sample of the test liquid with the solvent and separating the solvent from the sample of the liquid under examination, an infrared analyzer containing two measuring cells 5 and 6, respectively, for measurements of solvent with oil (oil products) and pure solvent; solvent regenerator 7; and system 8 pipelines with valves.

A unit for mixing water containing oil with a solvent and separating water from the solvent consists of a protective cover 9, inside which is installed an inclined cylinder 10, at the bottom of which a spherical bottom 11 is fixed, containing on the inner surface of the perforated partition 12.

The cylinder is made of porous fluoroplastic with a porosity ratio of 20-40% (the wall thickness in the NARROW position is 1-3 mm) and is set at an angle of 45 relative to the base of the device, placed horizontally.

The feed tube 13 of the mixed substances through a gear transmission is connected with the drive 14.

In the lower part of the block, there are two drainage channels, 15 isolated from each other, channels 15 and 16, respectively, for draining the solvent with oil and water,

: The device works as follows.

Investigated water with oil flows through the filtering DF dosing

device 2, at the same time the solvent (pure carbon tetrachloride) is supplied to the node 4 at the dosing device 3. At the node 4 (fig. 2) water with oil and the solvent are fed through the pipe 13 to the mixer, which is formed by a spherical bottom 11, the drive 14 is turned on through the gear transmission, the screw 10 is rotated together with the tube

13 and a mixer 11, Liquid mixture

it is intensively mixed with the help of partitions 12 and enters the screw surface. As the cylinder rotates, the mixture of water and solvent with oil rolls over

Sero surface and splits.

The solvent with oil seeps in, flows into channel 16 and enters the measurement into an infrared analyzer, the cuvette 5, and the water rises

0 and is discharged into channel 15. Then the solvent with oil enters the regenerator 7, and from there it is clean, the solvent enters the cuvette 6.

The invention allows to combine

5 two ss of spouting, technologically complex devices, to reduce the metal consumption of the structure, to exclude the presence of a magnetic stirrer.

Invention formula

A device for measuring the concentration of oil and oil products in water, containing a dispenser of the water under investigation

and a solvent, connected to them a block. To mix water, containing: oil, with a solvent, and separating water from the solvent that absorbed the oil product;

behind this block is an infrared cheek-bang and a regenerator, which also means that, in order to increase reliability and simplify the design, the mixing unit is made

as mounted in a protective cover rotatably around its axis and having a screw cut on the inner surface of an inclined hollow cylinder of porous material permeable to solvent and not permeable to water, iipvc eM passes the feed tube of the substances to be mixed inside the cylinder and the lower end of the cylinder

closed spherical bottom inside

which installed perforated partitions.

Sources of information taken into account in the examination

1. The patent of Germany No. 1773659, cl. G 01 N 33/18, 1973.

2. Japanese Patent 52-7358,

cl. G 01 N, 21/02, 1977 (prototype).

Claims (1)

Claim A device for measuring the concentration of oil and oil products in water, containing a dispenser for the test water and solvent, a unit for mixing water containing oil with a solvent and separating water from the solvent that has absorbed the oil, an infrared analyzer and a regenerator installed behind this unit, characterized in that , in order to increase reliability and simplify the design, the mixing unit is designed as installed in a protective case with the possibility of rotation around its axis and having a screw thread the morning surface of an inclined hollow cylinder made of porous material that is permeable to solvent and not permeable to water, with a feed pipe of miscible substances passing inside the cylinder and the lower end of the cylinder closed by a spherical bottom, inside of which perforated partitions are installed.