SU424582A1 - LOW-TEMPERATURE SEPARATOR - Google Patents

Description

one

The invention relates to the field of the gas industry and can be used to clean natural gas from liquids and suspended particles in preparing it for further transportation.

A low-temperature separator is known, including sequentially installed separation chambers with swirlers and a gas outlet with these branch pipes.

The volume of the second separation chamber is 1.4–2.5 times the volume of the first separation chamber along the gas flow.

However, this separator is characterized by the complexity of the design, caused by the location of the separation chambers (one inside the other). In addition, it is difficult to bring the nozzles out and moisten the already dried gas flow, since it is in contact with the liquid at the bottom of the chamber.

In order to increase the degree of gas drying in the proposed low-temperature separator, a partition in the form of a truncated cone is installed in the upper part of the first separation chamber, above which is a swirler with a conical bottom of the subsequent separation chamber, and a separating cap adjacent to the smaller base of the truncated cone.

FIG. 1 shows the proposed separator, a longitudinal section; in fig. 2 is a sectional view in FIG. one.

In case 1, partitions 2, 3 are installed, tightly adjacent to the inner wall of the case, and a partition 4 in the form of a truncated cone, dividing the case into successively placed separation chambers 5, 6. Moreover, the transmission capacity of the upper (subsequent) separation chamber is greater than the lower (previous) .

Each separation chamber has a swirler 7 with tangential gaps, a gas outlet pipe 8, concentric with which a separation cap 9 is placed to drain the separated liquid. To the upper part of the lower cap 9 adjacent smaller base of the truncated cone of the partition 4.

To enter the gas flow, the separator is equipped with a pipe 10 with a valve 11, and to remove the dried gas stream from the separator, respectively, a pipe 12 and a valve 13. To discharge the separated liquid supplied pipes 14, 15, 16.

In the separator housing, due to the presence of partitions 2, 3, 4, gas flow chambers 17, 18 and chambers 19, 20 are formed for temporary storage of separation liquid. Works separator as follows. The gas flow under pressure through the open valve 11 and the pipe 16 is directed into the chamber 17 and through the slit holes the swirler 7 enters into the inside of the separation chamber 5. Due to the tangential opening of the slot holes in the inner surface of the pipe 8, the gas stream twists and spirals. In the field of centrifugal forces, the fluid particles are thrown to the wall, coagulated and move up the wall of the pipe 8 in the form of a film and through the annular gaps between the gas outlet pipe and the cap merge into the storage chamber of the separated liquid 19. The cleaned gas stream in the lower separation chamber 5 is sent to chamber 18. Due to the smooth expansion of the partition 4 in the form of a truncated cone, as well as the cone-shaped bottom of the upper swirler when the stream enters the chamber, no stagnant zones are formed, there are no bubbling zones ennoy liquid, and it means likvidiruets danger of hydrate formation in the flow expansion zone (since simultaneously the pressure is reduced the gas temperature decreases with extension). The dimensions of the slotted tangential holes of the upper swirler, the diameter of the upper nozzle 8, as well as the dimensions of the outlet nozzle 12 and the valve 13 are chosen in such a way that the gas flow rate behind the first separation chamber provides an increase in its volume in the chamber 18 1.4-2.5 times compared to with inlet volume. Due to this volume ratio, gas expansion and cooling occur. In the process of moving the flow through the annular space of chamber 18, liquid fractions are separated from it, which through the slit holes enter the swirl chamber of the upper separation chamber, and the separation operation is repeated. By adjusting the valves 11, 13, any pressure differential can be created, which means to obtain a wide range of the magnitude of the decrease in the temperature of the gas stream before processing it in the upper separation chamber. The subject of the invention is a low temperature separator comprising successively installed separation chambers with swirlers and gas outlet pipes, characterized in that, in order to increase the degree of gas drying. in the upper part of the first separation chamber, a partition in the form of a truncated cone is installed, above which a swirler with a conical bottom of the subsequent separation chamber is located, and a separating cap adjacent to the smaller base of the truncated cone.

20

10 P

Pi / z /

4-A

FIG. 2