CN104771941A - A geothermal water gas-liquid-solid three-phase separator and method - Google Patents

Abstract

The invention relates to a geothermal water gas-liquid-solid three-phase separator and a method. The device comprises an upper shell, a lower shell, a rotational flow desanding mechanism, an impact separating and sprinkling mechanism and a separating umbrella mechanism, wherein the upper shell is movably connected with the lower shell; the bottom of the rotational flow desanding mechanism is provided with a rotational flow inner sand discharge pipe which is led out of the lower shell through a rotational flow outer sand discharge pipe. The beneficial effects are that: three separation processes of cyclone desanding, impact separate sprinkling and separation umbrella are integrated in the device, so that the device is compact in structure and reduces the floor area of equipment; the adopted impact spraying mechanism and the separating umbrella mechanism can be arranged in multiple stages, so that the separating effect is improved; in addition, the device skillfully utilizes the design of the guide rail clamping groove, and the inner core of the device can be integrally drawn out, thereby being convenient for manufacturing and overhauling.

Description

A geothermal water gas-liquid-solid three-phase separator and method

technical field

The invention relates to a geothermal water three-phase separation device, in particular to a geothermal water gas-liquid-solid three-phase separator and method.

Background technique

 With the development of the national economy, people's living standards are gradually improving, and conventional energy sources such as coal and oil are increasingly scarce, and a series of environmental problems have been caused, prompting human beings to start the development and utilization of new energy sources. As a clean green energy, geothermal has the advantages of easy mining, easy application and no environmental pollution. However, natural gas is often contained in geothermal water, especially in oil and gas field areas. It is a major safety hazard in geothermal development and utilization, and many safety accidents have occurred across the country. Therefore, it is particularly important to study a gas-liquid-solid three-phase separation device for geothermal water.

There are many kinds of three-phase separation technologies, and the basic principles include gravity sedimentation, baffle separation, centrifugal force separation, screen separation, ultrafiltration separation, packing separation, etc. However, most of them are used in the field of oil and gas gathering and transportation, and no efficient and reliable device has been developed for the three-phase separation of gas-bearing geothermal water.

If the three-phase separator in the field of oil and gas gathering and transportation is applied to the geothermal water system, there will be the following defects: 1. The three-phase separator designed based on the nature of the oil is applied to the geothermal water system, and the separation effect cannot be guaranteed; 2. The equipment Large volume, large floor area and increased investment; 3. Difficult maintenance of equipment.

Contents of the invention

The purpose of the present invention is to provide a geothermal water gas-liquid-solid three-phase separator and method for the above-mentioned defects in the prior art, so as to reduce the floor area of the equipment and reduce the engineering investment.

A gas-liquid-solid three-phase separator for geothermal water mentioned in the present invention: includes an upper shell, a lower shell, a swirl desanding mechanism, an impact separation mechanism and a separation umbrella mechanism, the upper shell and the lower shell The shells are movably connected, the top of the upper shell is provided with an exhaust pipe, the middle of the upper shell is provided with a droplet catch net, and the inner cavity of the lower shell is equipped with a swirling sand removal mechanism, an impact separation mechanism and a separation umbrella mechanism , the cyclone desanding mechanism cooperates with the gas-liquid flow path separation barrel, the bottom of the gas-liquid flow path separation barrel is provided with a guide ring, and the bottom of the gas-liquid flow path separation barrel is provided with an impact separation mechanism, and the impact separation The mechanism includes an upper shower orifice plate and a lower shower orifice. Below the lower shower orifice, there is a separation system consisting of an upper water spray collection plate, a lower water spray collection plate, an upper gas separation umbrella, and a lower gas separation umbrella. The umbrella mechanism is provided with a water outlet pipe at the lower end side of the lower shell, and a sewage discharge pipe is provided at the bottom; the bottom of the cyclone desanding mechanism is provided with a cyclone internal sand discharge pipe, and the cyclone internal sand discharge pipe is connected through the The swirling flow sand discharge pipe leads out of the lower casing.

The above-mentioned cyclone desanding mechanism includes a cyclone outer inlet pipe, a cyclone inner water inlet pipe, a cyclone cylindrical section, an overflow pipe, a swirl cone section, a cyclone inner sand discharge pipe, a sediment collection pipe, and a cyclone outer discharge pipe. sand tube, and the swirl cylindrical section is welded and fixed with the gas-liquid flow channel separation barrel through the first fixed pillar, and the swirl conical section at the lower side of the swirl cylindrical section is welded and fixed with the gas-liquid flow path separation barrel through the second fixed pillar. The lower end of the flow cone section is connected to the inner swirl sand discharge pipe, the middle section of the inner swirl sand discharge pipe is provided with a sediment collection pipe with increased volume, and the lower end of the inner swirl sand discharge pipe is flexibly connected to the outer sand discharge pipe of the swirl flow.

The center of the upper shower orifice of the above-mentioned impact shower mechanism cooperates with the swirl cone section, and the outer side of the upper shower orifice is connected with the upper liquid retaining ring, and cooperates with the second guide rail and the card slot through the fifth fixed pillar; The center of the shower orifice is matched with the swirl cone section, and the outer side of the lower shower orifice is connected with the lower liquid retaining ring, and is matched with the second guide rail and the card slot through the sixth fixed pillar.

The center of the upper water spray collecting plate of the above-mentioned separation umbrella mechanism cooperates with the sand discharge pipe in the swirl flow, the center of the lower water spray collection plate cooperates with the sand discharge pipe in the swirl flow, and the lower water spray collection plate is located in the upper part Below the water spray collection tray; an upper gas separation umbrella is provided between the upper water spray collection tray and the lower spray water collection tray, and a lower gas separation umbrella is provided below the lower water spray collection tray.

The above-mentioned upper water spray collection tray is connected to the upper gas separation umbrella through the seventh fixed pillar in the longitudinal direction, and the seventh fixed pillar is matched with the second guide rail and the card slot through the ninth fixed pillar in the transverse direction.

The above-mentioned lower water spray collection tray is connected to the lower gas separation umbrella through the eighth vertical fixed pillar, and the eighth fixed pillar is matched with the second guide rail and the card slot through the tenth horizontal fixed pillar.

An overflow pipe is provided in the inner chamber at the top of the swirl cylindrical section.

The bottom of the above-mentioned droplet capturing net is supported by the fourth fixed pillar, and the outer side of the fourth fixed pillar cooperates with the first guide rail and the slot.

The above-mentioned swirl flow outer water inlet pipe is connected to the swirl flow inner water inlet pipe of the inner chamber of the lower casing, and the swirl flow inner water inlet pipe is connected to the tangential direction of the swirl flow cylindrical section.

A method for using a geothermal water gas-liquid-solid three-phase separator mentioned in the present invention comprises the following steps:

The geothermal water containing gas and sediment enters the cyclone desanding mechanism tangentially from the outer water inlet of the cyclone and the inner water inlet of the cyclone, and the liquid-solid separation is carried out through the cylindrical section of the cyclone and the conical section of the cyclone, and the sediment passes through the cyclone The inner sand discharge pipe and the swirl outer sand discharge pipe are discharged;

The gas-containing water overflows the cyclone sand removal mechanism through the overflow pipe, and falls freely on the inner side of the gas-liquid channel separation barrel to the impact and separation mechanism, where collision and separation occur, increasing the exposed surface area and causing turbulent flow. Liquid separation: the liquid after separation forms a fine water column and continues to fall to the separation water collection plate, and the collected liquid falls to the separation umbrella mechanism below through the gap between the center of the collection plate and the sand discharge pipe in the cyclone for further gas-liquid separation Separation, the final separated liquid is discharged from the lower part of the three-phase separator through the outlet pipe;

The free gas separated in the impact separation mechanism and the separation umbrella mechanism flows upward through the outer wall of the gas-liquid flow channel separation barrel, and is discharged from the three-phase separator through the droplet catch net and exhaust pipe. The exhaust gas treatment method is determined and equipped on site. Gas safe handling.

The beneficial effects of the present invention are: geothermal water containing gas and sediment enters the cyclone desanding mechanism in the device of the present invention for liquid-solid separation; the water after liquid-solid separation overflows the cyclone desanding mechanism through the overflow pipe, The inside of the gas-liquid channel separation mechanism falls freely to the impact separation mechanism for gas-liquid separation; the liquid after gas-liquid separation continues to freely fall to the separation umbrella mechanism for further gas-liquid separation; the liquid after gas-liquid-solid three-phase separation passes through The outlet pipe at the bottom of the device is discharged, the separated sediment solid is discharged through the sand discharge pipe at the bottom of the device, and the separated gas is discharged through the exhaust pipe at the top of the device; The separation process is integrated in this device, which has a compact structure and reduces the equipment footprint; the impact separation mechanism and separation umbrella mechanism adopted can be arranged in multiple stages to increase the separation effect; It can be pulled out as a whole, which is convenient for manufacturing and maintenance.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is A-A sectional view of the present invention;

Accompanying drawing 3 is the structural representation of cyclone desandering device of the present invention;

Accompanying drawing 4 is the top view of cyclone desandering device of the present invention;

Accompanying drawing 5 is the top view of the impact shower mechanism of the present invention;

Accompanying drawing 6 is the structural schematic diagram of gas-liquid channel separation barrel;

Accompanying drawing 7 is the structural representation of the second guide rail and the card slot;

Accompanying drawing 8 is the structural representation of separation umbrella mechanism;

In the above picture: swirl outer water inlet pipe 1, swirl inner water inlet pipe 2, swirl cylindrical section 3, overflow pipe 4, swirl conical section 5, swirl inner sand discharge pipe 6, sediment collection pipe 7, swirl Outflow sand discharge pipe 8, first fixed pillar 9, gas-liquid channel separation barrel 10, second fixed pillar 11, guide ring 12, third fixed pillar 13, droplet catch net 14, fourth fixed pillar 15, First guide rail and card slot 16, upper housing 17, upper and lower housing connecting flanges 18, exhaust pipe 19, lower housing 20, upper shower orifice plate 21, lower shower orifice plate 22, upper liquid retaining ring 23 , the lower liquid blocking ring 24, the fifth fixed pillar 25, the sixth fixed pillar 26, the upper sub-spray water collection tray 27, the lower sub-spray water collection tray 28, the upper gas separation umbrella 29, the lower gas separation umbrella 30, the seventh fixed Pillar 31, eighth fixed pillar 32, ninth fixed pillar 33, tenth fixed pillar 34, eleventh fixed pillar 35, twelfth fixed pillar 36, second guide rail and card slot 37, water outlet pipe 38, sewage pipe 39 , Device installation feet 40, lifting lugs 41.

Detailed ways

A geothermal water gas-liquid-solid three-phase separator mentioned in the present invention, with reference to accompanying drawings 1, 2 and 6, includes an upper casing 17, a lower casing 20, a cyclone sand removal mechanism, an impact separation mechanism and a separation mechanism. Umbrella mechanism, the upper casing 17 and the lower casing 20 are movably connected, the top of the upper casing 17 is provided with an exhaust pipe 19, the middle part of the upper casing 17 is provided with a droplet catch net 14, and the lower casing The inner cavity of the body 20 is equipped with a swirling flow desanding mechanism, an impact separation mechanism and a separation umbrella mechanism. The swirling flow desanding mechanism cooperates with the gas-liquid flow path separation barrel 10, and the bottom of the gas-liquid flow path separation barrel 10 is provided with a guide ring 12 , the below of the gas-liquid channel separation barrel 10 is provided with an impact and shower mechanism, the impact shower mechanism includes an upper shower orifice 21 and a lower shower orifice 22, and a shower orifice 22 is provided below the lower shower orifice. The separation umbrella mechanism composed of the upper water spray collecting plate 27, the lower water spray collecting plate 28, the upper gas separation umbrella 29, and the lower gas separation umbrella 30 is provided with a water outlet pipe 38 at the lower end side of the lower housing 20, and a water outlet pipe 38 is arranged at the bottom. There is a sewage discharge pipe 39; the bottom of the swirl sand removal mechanism is provided with a swirl inner sand discharge pipe 6, and the swirl inner sand discharge pipe 6 is connected to the swirl outer sand discharge pipe 8 to lead out of the lower shell 20.

Referring to accompanying drawings 3-4, the swirling flow desanding mechanism of the present invention includes a swirling flow outer water inlet pipe 1, a swirling flow inner water inlet pipe 2, a swirling flow cylindrical section 3, an overflow pipe 4, a swirling flow conical section 5, and a swirling flow inner water inlet pipe 2. The sand discharge pipe 6, the sediment collection pipe 7, the sand discharge pipe 8 outside the swirl flow, and the swirl flow cylindrical section 3 is welded and fixed with the gas-liquid flow path separating barrel 10 through the first fixed pillar 9, and the lower side of the swirl flow cylindrical section 3 The swirl conical section 5 is welded and fixed with the gas-liquid channel separation barrel 10 through the second fixed support 11, the lower end of the swirl conical section 5 is connected to the swirl inner sand discharge pipe 6, and the middle section of the swirl inner sand discharge pipe 6 is provided with a volume increaser. The large sediment collection pipe 7, and the lower end of the sand discharge pipe 6 in the swirl flow is flexibly connected with the sand discharge pipe 8 outside the swirl flow, specifically the lower end of the sand discharge pipe 6 in the swirl flow is connected with the sand discharge pipe outside the swirl flow 8 connections, and the swirling flow sand discharge pipe 8 is located outside the lower shell.

Referring to accompanying drawing 5, the center of the upper shower orifice plate 21 of the impacting shower distribution mechanism cooperates with the swirling flow cone section 5, and the outer side of the upper shower orifice plate 21 is connected with the upper liquid retaining ring 23, and the fifth fixed pillar 25 is connected to the second The guide rail and the draw-in groove 37 cooperate; the center of the lower sub-spray orifice plate 22 cooperates with the swirling flow cone section 5, and the outer side of the lower sub-spray orifice plate 22 is connected with the lower liquid retaining ring 24, and is connected with the second guide rail and the second guide rail through the sixth fixed pillar 26. The card slot 37 is matched.

Referring to accompanying drawing 7, the design of two guide rails and card slots, the inner core of the device can be pulled out as a whole, which is convenient for manufacture and maintenance. Specifically, the second guide rail and card slot 37 are bent from a whole steel plate and welded to the equipment shell inside the body. The fourth fixed pillar 15, the fifth fixed pillar 25, the sixth fixed pillar 26, the ninth fixed pillar 33, and the tenth fixed pillar 34 all slide down to the corresponding slots along the guide rail, and the inner core of the rotating device makes the fixed pillar The guide rail enters the draw-in slot, so that the weight of the inner core is transferred to the draw-in slot through the fixed pillar, and then transferred to the shell through the draw-in slot.

With reference to accompanying drawing 8, the center of the upper sub-sprinkling water collection plate 27 of the separation umbrella mechanism of the present invention cooperates with the sand discharge pipe 6 in the swirl flow, and the center of the lower sub-spray water collection plate 28 cooperates with the sand discharge pipe 6 in the swirl flow, And the lower sub-spray collection tray 28 is located below the upper sub-spray collection tray 27; an upper gas separation umbrella 29 is arranged between the upper sub-spray collection tray 27 and the lower sub-spray collection tray 28, and the lower sub-spray Below the water collection tray 28 is provided with a lower gas separation umbrella 30 .

In addition, the upper water spray collecting tray 27 is connected to the upper gas separation umbrella 29 through the seventh fixed pillar 31 in the longitudinal direction, and the seventh fixed pillar 31 cooperates with the second guide rail and the card groove 37 through the ninth fixed pillar 33 in the transverse direction; The lower shower collecting tray 28 is connected to the lower gas separation umbrella 30 through the eighth longitudinal fixed pillar 32, and the eighth fixed pillar 32 is matched with the second guide rail and the slot 37 through the tenth transverse fixed pillar 34.

An overflow pipe 4 is provided in the inner cavity at the top of the above-mentioned swirl cylindrical section 3 .

Furthermore, the bottom of the droplet catch net 14 is supported by the fourth fixed pillar 15, and the outer side of the fourth fixed pillar 15 cooperates with the first guide rail and the draw-in groove 16; The swirl inner water inlet pipe 2 in the inner cavity, and the swirl inner water inlet pipe 2 is connected to the tangential direction of the swirl cylindrical section 3; the upper shell 17 and the lower shell 20 are connected through the upper and lower shell connecting flanges 18; the swirl cylindrical Section 3 and swirl cone section 5 are connected by welding.

A method for using a geothermal water gas-liquid-solid three-phase separator mentioned in the present invention comprises the following steps:

The geothermal water containing gas and sediment enters the cyclone desanding mechanism tangentially from the cyclone outer water inlet 1 and the cyclone inner water inlet 2, and the liquid-solid separation is carried out through the cyclone cylindrical section 3 and the cyclone conical section 5, and the mud The sand is discharged through the swirl inner sand discharge pipe 6 and the swirl outer sand discharge pipe 8;

The gas-containing water overflows the cyclone desanding mechanism through the overflow pipe 4, falls freely on the inner side of the gas-liquid channel separation barrel 10, and hits the impacting and separating mechanism, where collision and separation occur, increasing the exposed surface area, causing turbulent flow, and causing The gas is separated from the liquid; the liquid after separation forms a fine water column and continues to fall to the separation water collection plate 27, and the collected liquid falls to the separation umbrella mechanism below through the gap between the center of the collection plate and the sand discharge pipe 6 in the swirling flow. Further gas-liquid separation, the final separated liquid is discharged from the lower part of the three-phase separator through the outlet pipe 38;

The free gas separated in the impact separation mechanism and the separation umbrella mechanism flows upward through the outer wall of the gas-liquid flow channel separation barrel 10, and is discharged from the three-phase separator through the droplet capture net 14 and the exhaust pipe 19. The exhaust gas treatment method is determined on site. And equipment, safe gas handling.

Claims (10)

1. A gas-liquid-solid three-phase separator for geothermal water, characterized in that it includes an upper casing (17), a lower casing (20), a swirl desanding mechanism, an impact separation mechanism and a separation umbrella mechanism. The upper casing (17) and the lower casing (20) are movably connected, the top of the upper casing (17) is provided with an exhaust pipe (19), and the middle part of the upper casing (17) is provided with a droplet catch net ( 14), the inner cavity of the lower casing (20) is equipped with a swirl desanding mechanism, an impact separation mechanism and a separation umbrella mechanism, and the swirl desanding mechanism cooperates with the gas-liquid flow channel separation barrel (10), and the gas-liquid flow The bottom of the channel separation barrel (10) is provided with a guide ring (12), and the bottom of the gas-liquid channel separation barrel (10) is provided with an impact and separation mechanism, which includes an upper separation orifice plate (21 ) and the lower shower hole plate (22), the bottom of the lower shower hole plate (22) is provided with the upper shower water collection plate (27), the lower water shower collection plate (28), the upper gas separation umbrella (29 ), a separation umbrella mechanism composed of a lower gas separation umbrella (30), a water outlet pipe (38) is provided at the lower end side of the lower casing (20), and a sewage discharge pipe (39) is provided at the bottom; the cyclone sand removal The bottom of the mechanism is provided with a swirl inner sand discharge pipe (6), and the swirl inner sand discharge pipe (6) is led out of the lower casing (20) by connecting the swirl outer sand discharge pipe (8). 2. The geothermal water gas-liquid-solid three-phase separator according to claim 1, characterized in that: the cyclone desanding mechanism includes a cyclone outer water inlet pipe (1), a cyclone inner water inlet pipe (2) , swirl cylindrical section (3), overflow pipe (4), swirl conical section (5), swirl inner sand discharge pipe (6), sediment collection pipe (7), swirl outer sand discharge pipe (8 ), and the swirl cylindrical section (3) is welded and fixed with the gas-liquid flow channel separating barrel (10) through the first fixed support (9), and the swirl conical section (5) on the lower side of the swirl cylindrical section (3) passes through the first The two fixed pillars (11) are welded and fixed to the gas-liquid channel separation barrel (10). The lower end of the swirl conical section (5) is connected to the swirl inner sand discharge pipe (6). The middle section of the swirl inner sand discharge pipe (6) is set There is a sediment collection pipe (7) with increased volume, and the lower end of the inner swirl sand discharge pipe (6) is flexibly connected with the swirl outer sand discharge pipe (8). 3. The geothermal water gas-liquid-solid three-phase separator according to claim 1, characterized in that: the center of the upper shower orifice plate (21) of the impact shower mechanism cooperates with the swirl cone section (5) , the outer side of the upper shower orifice (21) is connected to the upper liquid retaining ring (23), and cooperates with the second guide rail and the card slot (37) through the fifth fixed pillar (25); the lower shower orifice (22) The center is matched with the swirl conical section (5), and the outer side of the lower shower orifice (22) is connected with the lower liquid retaining ring (24), and is matched with the second guide rail and the card slot (37) through the sixth fixed pillar (26) . 4. The gas-liquid-solid three-phase separator for geothermal water according to claim 1, characterized in that: the center of the upper water-sprinkling collection plate (27) of the separation umbrella mechanism is connected to the sand discharge pipe in the cyclone ( 6) Cooperate, the center of the lower water spray collecting tray (28) cooperates with the swirl inner sand discharge pipe (6), and the lower water spray collecting tray (28) is located below the upper water spray collecting tray (27); An upper gas separation umbrella (29) is provided between the upper water spray collection plate (27) and the lower water spray collection plate (28), and a lower gas separation umbrella (29) is provided under the lower water spray collection plate (28). umbrella (30). 5. The geothermal water gas-liquid-solid three-phase separator according to claim 4, characterized in that: the upper water spray collecting tray (27) is connected to the upper gas The umbrella (29) is separated, and the seventh fixed pillar (31) cooperates with the second guide rail and the card slot (37) through the ninth horizontal fixed pillar (33). 6. The gas-liquid-solid three-phase separator for geothermal water according to claim 4, characterized in that: the lower water shower collecting tray (28) is connected to the lower gas tank through the eighth longitudinal fixed support (32). The umbrella (30) is separated, and the eighth fixed pillar (32) cooperates with the second guide rail and the card slot (37) through the tenth transverse fixed pillar (34). 7. The gas-liquid-solid three-phase separator for geothermal water according to claim 2, characterized in that: an overflow pipe (4) is provided in the inner cavity at the top of the swirl cylindrical section (3). 8. The geothermal water gas-liquid-solid three-phase separator according to claim 1, characterized in that: the bottom of the droplet catch net (14) is supported by the fourth fixed pillar (15), and the fourth fixed The outer side of the pillar (15) cooperates with the first guide rail and the card slot (16). 9. The geothermal water gas-liquid-solid three-phase separator according to claim 2, characterized in that: the swirl outer inlet pipe (1) is connected to the swirl inner inlet of the inner cavity of the lower casing (20). The water pipe (2), and the water inlet pipe (2) in the swirl flow is connected to the tangential direction of the swirl flow cylindrical section (3). 10. A method for using the geothermal water gas-liquid-solid three-phase separator according to any one of claims 1-9, characterized in that: The geothermal water containing gas and sediment enters the cyclone desanding mechanism tangentially from the cyclone outer water inlet (1) and the cyclone inner water inlet (2), and passes through the cyclone cylindrical section (3) and the cyclone conical section ( 5) Liquid-solid separation is carried out, and the sediment is discharged through the cyclone inner sand discharge pipe (6) and the cyclone outer sand discharge pipe (8); The gas-containing water overflows the cyclone desanding mechanism through the overflow pipe (4), falls freely on the inner side of the gas-liquid channel separation barrel (10) and hits the impacting and separating mechanism, where collision and separation occur, increasing the exposed surface area and causing turbulence. The gas is separated from the liquid; the liquid after separation forms a fine water column and continues to fall to the separation water collection plate (27), and the collected liquid passes through the gap between the center of the collection plate and the sand discharge pipe (6) in the cyclone The separation umbrella mechanism that falls to the bottom performs further gas-liquid separation, and the finally separated liquid is discharged from the lower part of the three-phase separator through the outlet pipe (38); The free gas separated in the impact separation mechanism and the separation umbrella mechanism flows upward through the outer wall of the gas-liquid channel separation barrel (10), and is discharged from the three-phase separator through the droplet catch net (14) and the exhaust pipe (19). The gas treatment method is determined and equipped on site, and the gas is handled safely.