RU2446001C1 - Gas drying separator - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention is intended for separating fluid from gas flow after its contact with fluid in drying natural and petroleum gas. Proposed separator comprises casing, crude gas inlet branch pipe, processed gas discharge branch pipe, union to drain fluid separated from gas, moisture collectors, baffle plate and separation elements. Central perforated tube with stopped bottom end is secured in said casing. Separation elements made up of coiled gauze and moisture collectors form separation units are secured and regularly spaced apart over perforated tube height.

EFFECT: higher efficiency of separation and purification.

5 cl, 7 dwg

Description

The invention relates to the gas, gas processing, chemical and petroleum industries and can be used in processes and apparatuses for separating liquid from a gas stream after it is in contact with a liquid during drying of natural and oil gas.

Known separator containing a housing with nozzles of the inlet of the crude gas, gas and liquid outlet, separation elements mounted on a plate equipped with a drain pipe, the end of which is connected to a liquid collection tank. In such a separator, the liquid is drained from the cavity of the plate equipped with separation elements through a pipe lowered into the liquid in the liquid collector (RF patent No. 2056135, IPC B01D 45/12, publ. March 20, 1996).

The disadvantage of such a separator is its unreliable operation with a low liquid content in the gas being cleaned, as well as in the presence of mechanical impurities in it. With a low liquid content, gas may break through the drain pipe and break the water seal, and the presence of mechanical impurities will clog the drain pipe, which reduces the separation efficiency.

A known separator for drying gas, comprising a housing with nozzles for inlet of raw gas, outlet for purified gas and liquid outlet and inlet and outlet filter sections located in the housing, the inlet filter section is in the form of a plate with direct-flow centrifugal separation elements installed above the nozzle for inlet gas and a gas distribution device located below it, made in the form of a truncated cone or a truncated pyramid expanding from the bottom up, in the inlet and intermediate section to guide rails with rectangular or square holes are installed, the guide rails are made of vertically mounted flat plates, the height of which is equal to the length of one of the sides of the square hole or the smaller side of the rectangular hole, and the output filter section is made in the form of at least two located one above another collapsible plates with annular mesh nozzles, and between the plates there is a gas distribution grill.

(RF patent No. 2252813, IPC B01D 45/12, B01D 53/26, publ. 27.05.2005).

A known separator comprising a housing with nozzles for inlet gas, gas and liquid outlet, separation elements located on a plate equipped with a drain pipe, a cyclone is installed in the separator, the inlet of the gas inlet pipe is mounted in the cavity of the crude gas inlet, and the axial zone is connected with the end of the drain pipe.

(RF patent №2147914, IPC B01D 45/12, publ. 04/27/2000).

A disadvantage of the known device is the fact that part of the small particles of moisture at high flow rates of compressed gas flies through the working volume, not having time to separate, and is carried away by a passing gas stream.

The objective of the invention is to increase the separation efficiency, the creation of devices for a high degree of gas purification from moisture and oil.

This problem is solved due to the fact that in the separator for drying gas, which includes a housing containing a raw gas inlet pipe, a purified gas outlet pipe, a drainage nozzle for draining the liquid extracted from the gas, moisture collectors located in the housing, a chipper, separation elements, in the housing a central perforated pipe is fixed with a plug at the lower end, separation elements, which are a spiral mesh, and moisture collectors form separation blocks, fixed with a uniform pitch along the height rforirovannoy pipe.

In addition, each moisture collector consists of a cylindrical container, a tube is welded into the bottom, and a plate in the form of a conical stepped disk is fixed to the upper end of the cylindrical container.

In addition, the length of the tube is selected so that its lower end is located in the lower cylindrical container.

In addition, the separation elements, which are a spiral-coiled mesh, are formed of horizontally arranged bearing strips, on which vertical elements in the form of a wire, the profile of which is an isosceles triangle with rounded vertices, are fixed by welding, which determines the degree of separation.

In addition, the chipper is made in the form of a screen and is located opposite the inlet pipe symmetrically to the axis of the inlet of the pipe.

The invention is illustrated by drawings.

Figure 1 is a longitudinal section of a gas separator.

Figure 2 - moisture collector of the gas separator.

Figure 3 - section bB in figure 1.

4 is a filter element.

5 is an illustration of moisture condensation on the wire profile of the filter element.

6 is an illustration of the released liquid on the rear wall of the wire profile of the filter element.

7 - increasing in size sliding along the profile of the filter element of a drop of liquid.

The separator for drying gas contains a central perforated pipe 2 fixed in the housing 1, on which separation blocks 3 are fixed with a uniform step in height, each of which includes a separation element 4, a moisture collector 5, consisting of a cylindrical tank 6, into which the bottom is welded drainage tube 7, on the upper end of the cylindrical container 6 a conical stepped disk is fixed 8. The length of the drainage tube 7 is selected so that its lower end is located in the downstream cylindrical container 6. Separation elements 4 are a spiral-coiled mesh formed of horizontally arranged bearing strips 9, on which vertical elements 10 in the form of a wire, the profile of which is an isosceles triangle with rounded vertices, are fastened by welding, determining the degree of separation. The separation elements 4 are installed above the collectors of moisture 5.

The housing 1 comprises a raw gas inlet pipe 11, a purified gas outlet pipe 12, a drain fitting 13 is installed in the bottom of the housing for draining the liquid extracted from the gas, inside the housing 1 opposite the inlet pipe symmetrically to the axis of the inlet of the pipe there is a baffle 14 in the form of a screen for distribution gas flow throughout the internal volume of the housing 1. At the lower end of the perforated pipe 2, a plug 15 is installed.

During operation of the separator, raw moist gas entering the nozzle 11 due to the chipper 14 is distributed throughout the entire volume of the separator housing 1. When the gas passes through a spiral-coiled grid of separation elements 4, the moisture contained in the gas condenses on the side surfaces of the vertical elements 10.

The released liquid is carried by a gas stream to the back wall of the vertical elements 10. As the liquid volume accumulates, the droplets that form begin to slide down the back wall, increasing in size. Condensed moisture accumulates in the cylindrical container 6 of the moisture collector 5, and then drains down the drain pipe 7. Flowing from the upper collectors of moisture to the lower located liquid is drained through the drainage nozzle 13.

The gas purified from moisture leaves the separator through the outlet pipe of the purified gas 12.

The use of a device for drying gas allows for efficient separation of the liquid from the gas stream.

Claims (5)

1. The separator for drying gas, comprising a housing containing a nozzle of the inlet of the crude gas, a nozzle of the outlet of the purified gas, a drainage fitting for draining the liquid extracted from the gas, moisture collectors located in the housing, a chipper, separation elements, characterized in that the central perforated is fixed in the housing a pipe with a plug at the lower end, separation elements, which are a spiral-coiled mesh, and moisture collectors form separation blocks fixed with a uniform pitch along the height of the perforated pipes s. 2. The separator for drying gas according to claim 1, characterized in that each moisture collector consists of a cylindrical container, a tube is welded into the bottom, and a plate in the form of a conical stepped disk is fixed to the upper end of the cylindrical container. 3. The separator for drying gas according to claim 2, characterized in that the length of the tube is selected so that its lower end is located in the downstream cylindrical tank. 4. The separator for drying gas according to claim 1, characterized in that the separation elements, which are a spiral-rolled mesh, are formed of horizontally arranged supporting strips, on which vertical elements in the form of a wire are fixed by welding with a step that determines the degree of separation. whose profile is an isosceles triangle with rounded vertices. 5. The separator for drying gas according to claim 1, characterized in that the chipper is made in the form of a screen and is located opposite the inlet pipe symmetrically to the axis of the inlet of the pipe.

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