CN108623118B - Three-phase separator with continuous exhaust, intermittent deslagging and back flushing - Google Patents
Three-phase separator with continuous exhaust, intermittent deslagging and back flushing Download PDFInfo
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- CN108623118B CN108623118B CN201810428355.9A CN201810428355A CN108623118B CN 108623118 B CN108623118 B CN 108623118B CN 201810428355 A CN201810428355 A CN 201810428355A CN 108623118 B CN108623118 B CN 108623118B
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- 238000011010 flushing procedure Methods 0.000 title claims description 22
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000000926 separation method Methods 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 39
- 238000011001 backwashing Methods 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 30
- 238000007790 scraping Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- 230000008929 regeneration Effects 0.000 abstract description 6
- 238000011069 regeneration method Methods 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 15
- 238000007599 discharging Methods 0.000 description 10
- 239000013049 sediment Substances 0.000 description 9
- 239000010802 sludge Substances 0.000 description 8
- 238000007664 blowing Methods 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000009284 supercritical water oxidation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 239000006227 byproduct Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
- C02F11/086—Wet air oxidation in the supercritical state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a continuous exhaust and intermittent deslagging three-phase separator with backwashing, which belongs to the technical field of filtering and separating equipment and comprises a barrel, wherein a feed pipe is horizontally arranged in the barrel, a liquid-solid separation part is arranged below the feed pipe, an annular filter screen is arranged in a bottom cavity of the liquid-solid separation part, and a backwashing mechanism and a liquid discharge port are arranged on the outer wall of the barrel corresponding to the position of the filter screen; an intermittent deslagging mechanism is arranged below the liquid-solid separation part. When the annular filter screen is blocked, the back washing mechanism blows air into the cylinder body to blow away residues on the annular filter screen, so that the regeneration of the annular filter screen is realized, the continuous operation of equipment is ensured, and the continuous exhaust can be realized. Solid residue is pushed downwards through the loosening screw, the intermittent discharge of material slag is controlled by opening the upper valve and the lower valve in a discontinuous mode, the material slag cannot be extruded and agglomerated, the phenomenon that the pressure inside the cylinder is increased sharply is effectively avoided, and the equipment runs stably.
Description
Technical Field
The invention belongs to the technical field of filtering and separating equipment, and particularly relates to a three-phase separator with continuous exhaust, intermittent deslagging and back washing.
Background
Along with the improvement of the living standard of people, the construction scale of urban sewage in China is rapidly developed, sludge is used as a by-product of sewage treatment, 5.6 tons of wet sludge with the water content of 80 percent are averagely generated when 1 ten thousand tons of sewage are treated, and the urban sludge yield in 2016 is more than 4000 ten thousand tons. The supercritical water oxidation technology uses supercritical water (Tc is more than or equal to 374.95 ℃, Pc is more than or equal to 22.064MPa)Is an environment-friendly technology for treating the municipal sludge by using a reaction medium, and can thoroughly realize harmlessness of the municipal sludge. In the process of supercritical water oxidation, municipal sludge can generate CO2、N2And the urban sludge also contains inorganic substances such as gravel, clay and the like. The product of supercritical water oxidation of municipal sludge is separated into gas, liquid and solid phases after depressurization, so that gas, liquid and solid phases need to be separated.
Patent zl201620184557.x is known in the prior art, which proposes a three-phase separation device used under pressure, and comprises a cylinder body, wherein a spray pipe is arranged in the middle of the cylinder body, a gas-liquid separation part is arranged above the cylinder body, a liquid-solid separation part is arranged below the cylinder body, a filter is arranged in the middle of the device to perform the liquid-solid separation function, and a helical blade is arranged at the bottom of the device to perform the sealing and solid-phase residue discharge functions.
Patent ZL201620185011.6 is known in the prior art, which proposes a three-phase separation device used under pressure, and comprises a filter cavity and a motor arranged at the top of the filter cavity, wherein a feed inlet is arranged at the upper end of the wall of the filter cavity, a filter screen is arranged in the filter cavity, a clear liquid outlet is arranged outside the filter screen, a drive rod driven by the motor to rotate is arranged at the axis position in the filter cavity, a plurality of electric scraping brushes are arranged on the drive rod, and two-stage helical blades are arranged at the bottom of the drive rod; the bottom of the filter cavity is provided with a vertical discharging pipe, the bottom of the vertical discharging pipe is provided with a discharging opening, and the vertical discharging pipe is also provided with a liquid-solid rotary sealing valve.
These solutions of the prior art are not entirely satisfactory because of the pressure inside the chamber, the leakage of the bottom extraction screw and the rotary sealing valve, which affects the stability of the operation of the plant. Simultaneously, if the filter screen blocks up when above-mentioned prior art's solution uses, can only rely on scraping the brush and clean the filter residue of inside, if the aperture of filter screen is blockked up, then can lead to equipment shutdown. Moreover, the solid residue removing part is only a vertical discharging pipe, the space is narrow, the solid residue is easy to extrude and agglomerate under the condition of too much material residues, the internal pressure of the cavity of the vertical discharging pipe can be increased, and the slag discharging spiral blade and the rotary sealing valve at the bottom can be leaked to influence the running stability of the equipment.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a continuous-exhaust intermittent-slag-discharge three-phase separator with back washing, which can realize the regeneration of a filter screen and intermittent slag discharge and ensure the normal operation of equipment.
The invention is realized by the following technical scheme:
the invention discloses a continuous exhaust and intermittent deslagging three-phase separator with backwashing, which comprises a barrel, wherein a feed pipe is arranged in the barrel, the pipe wall of the feed pipe is provided with a plurality of nozzles, a gas-liquid separation part capable of exhausting gas is arranged above the feed pipe, and a liquid-solid separation part is arranged below the feed pipe; an annular filter screen coaxial with the cylinder is arranged in the bottom cavity of the liquid-solid separation part, and a liquid discharge port and a back washing mechanism are arranged on the outer wall of the cylinder outside the annular filter screen; an intermittent deslagging mechanism is arranged below the liquid-solid separation part, the intermittent deslagging mechanism comprises a buffer bin and a deslagging bin positioned below the buffer bin, an upper valve is arranged at the joint of the buffer bin and the deslagging bin, a lower valve is arranged below the deslagging bin, and the upper valve and the lower valve are alternately opened;
be equipped with the motor at the barrel top, the motor below has linked firmly the pivot that runs through barrel and surge bin, and the pivot is rotatory by motor drive, and the pivot is located to be equipped with a plurality of brushes of scraping on the axial segment of the solid separation part of annular filter screen place liquid, is located to be equipped with not hard up spiral on the axial segment in surge bin, can drive when the pivot is rotatory to scrape the brush and not hard up spiral rotation, scrapes the solid residue that can brush down on the annular filter screen when the brush is rotatory, and the solid residue that is brushed down falls into the surge bin.
Preferably, the back flushing mechanism comprises a back flushing fluid inlet, a check valve is installed at the back flushing fluid inlet, and the back flushing mechanism further comprises an adjusting valve arranged on the liquid outlet, wherein when the back flushing fluid inlet is communicated with back flushing fluid through an external fluid supply device, the adjusting valve is closed.
Preferably, the gas-liquid separation part comprises an exhaust port, an air supplement port and a pressure sensor interface which are arranged above the cylinder, an exhaust valve arranged on the exhaust port is in pressure linkage with the pressure sensor interface, and an air supplement valve arranged on the air supplement port is in pressure linkage with the pressure sensor interface.
Further preferably, a wire mesh demister used for stopping liquid drops is further arranged in the cavity of the gas-liquid separation part.
Preferably, the volume of the cavity of the gas-liquid separation part is 10-15 times of that of the buffer bin, and the volume of the buffer bin is larger than that of the slag discharging bin.
Preferably, the pressure inside the three-phase separator is maintained at 0.4 +/-0.05 MPa, and the pressure of the back washing fluid introduced by the back washing mechanism is 0.2-0.3 MPa higher than the pressure inside the three-phase separator.
Preferably, the liquid level meter also comprises a liquid level meter for monitoring the liquid level height in the barrel, and two ends of the liquid level meter are respectively connected with an upper interface of the liquid level meter arranged on the barrel wall close to the lower part of the feeding pipe and a lower interface of the liquid level meter arranged on the barrel wall above the annular filter screen.
Preferably, the annular filter screen is arranged in the cylinder body, and the annular filter screen is arranged in the cylinder body.
Preferably, the scraping brush is 3-5 mm away from the annular filter screen; the loosening spiral distance is 20-30 mm from the side wall of the buffer bin.
Preferably, the feeding pipe is arranged at the upper position of the middle part of the barrel body and is fixed with the inner wall of the barrel body in a triangular mode.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a three-phase separator, which is characterized in that a feed pipe arranged in a cylinder body divides the cylinder body into an upper part and a lower part, wherein the upper part is a gas-liquid separation part, and the lower part is a liquid-solid separation part. The liquid-solid separation part is provided with an annular filter screen, a back washing mechanism is arranged at the position of a cylinder body for mounting the annular filter screen, when the annular filter screen is blocked, the back washing mechanism can blow air into the cylinder body to blow away residues on the annular filter screen, so that the regeneration of the annular filter screen is realized, and the continuous operation of equipment is ensured. An intermittent deslagging mechanism composed of a buffer bin and a deslagging bin is arranged below the liquid-solid separation part, solid residues are pushed downwards through a loose screw, intermittent opening of an upper valve and a lower valve is conducted again, intermittent discharge of the material residues is controlled, the material residues cannot be extruded and agglomerated, the phenomenon that the pressure inside the cylinder is increased sharply is effectively avoided, and the operation of the device is stable. Therefore, the three-phase separator is reasonable in structural arrangement, can stabilize the pressure of a system and can realize automatic forward and backward washing of the filter screen.
Further, the backflushing machine washing mechanism comprises a back-blowing fluid inlet arranged on the outer wall of the cylinder body, a check valve is further arranged at the back-blowing fluid inlet, and the check valve prevents high-pressure gas from being blocked by residues on the filter screen to return. Meanwhile, the regulating valve is arranged on the liquid outlet, when the back flushing fluid is introduced into the back flushing fluid inlet, the regulating valve is closed, and the high-pressure fluid cannot overflow from the liquid outlet, so that the impact force of the high-pressure fluid on the filter screen can be quickly increased, solid residues on the filter screen are blown off, and the regeneration of the filter screen is realized.
Further, the gas-liquid separation part of inlet pipe top includes gas vent, tonifying qi mouth and the pressure sensor interface that the barrel top set up, and the discharge valve of installation is interlocked with pressure sensor interface pressure on the gas vent, and the tonifying qi valve of installation is interlocked with pressure sensor interface pressure on the tonifying qi mouth, can effectively guarantee the pressure stability in the three-phase separator to the stability of system's function has been improved.
Further, the cavity volume of gas-liquid separation part is 10 ~ 15 times of surge bin volume, and the volume in surge bin is greater than the volume in row sediment storehouse, can temporarily deposit more solid residue, does not need to discharge the material sediment in real time, can save a lot of time for the staff, and the staff can open upper and lower valve at an interval period and discharge the material sediment. Meanwhile, the opening time interval of the upper valve is determined by the flow of the feeding pipe, and the opening time of the upper valve is determined according to different slag output quantities.
Furthermore, a liquid level meter is further arranged on the side wall of the cylinder body, so that the liquid level height inside the cylinder body can be monitored in real time, whether the filter screen is blocked or not is judged through the liquid level height, and then the backwashing mechanism is started.
Further, the device also comprises a differential pressure sensor which is used for monitoring the differential pressure of an annular cavity formed between the annular filter screen and the wall of the cylinder body. The indication value of the pressure difference is used for feeding back whether the annular filter screen is blocked or not, and then the backwashing mechanism is started.
Furthermore, the pressure in the three-phase separator is maintained at 0.4 +/-0.05 MPa, and the pressure of the back washing fluid introduced by the back washing mechanism is 0.2-0.3 MPa higher than the pressure in the three-phase separator.
Drawings
FIG. 1 is a schematic structural diagram of a continuous exhaust and intermittent deslagging three-phase separator with backwashing;
FIG. 2 is a schematic view of the connection between the fixing frame and the rotating shaft;
FIG. 3 is a schematic view showing the position of the feed pipe and the rotating shaft.
Wherein, 1 is a motor; 2 is a speed reducer; 3 is an air supplement port; 4 is a safety valve interface; 5 is a silk screen demister; 6 is a feed pipe; 7 is a nozzle; 8 is a rotating shaft; 9 is a back-blowing fluid inlet; 10 is a check valve; 11 is an annular filter screen; 12 is a loose spiral; 13 is a cache bin; 14 is an upper valve; 15 is a lower valve; 16 is a slag discharge bin; 17 is a liquid outlet; 18 is a regulating valve; 19 is a fixing frame; 20, a scraping brush; 21 is a lower interface of the liquid level meter; 22 is a cylinder body; 23 is an upper interface of the liquid level meter; 24, triangle fixing; 25 is an exhaust port; and 26 is a pressure sensor interface.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1 to 3, the invention discloses a continuous exhaust and intermittent deslagging three-phase separator with backwashing, which comprises a cylinder 22, wherein a motor 1 and a speed reducer 2 are arranged above the cylinder 22, the motor 1 is connected with a rotating shaft 8 through the speed reducer 2 to drive the rotating shaft 8 to rotate, the rotating shaft 8 is arranged on the central axis of the cylinder 22, a feed pipe 6 is arranged at the upper position of the middle part in the cylinder 22, the feed pipe 6 is a liquid inlet containing gas and solid impurities, a plurality of nozzles 7 are arranged on the pipe wall of the feed pipe 6, the horizontally arranged feed pipe 6 divides the cylinder into an upper part and a lower part, the gas-liquid separation part is arranged above the feed pipe 6, the liquid-solid separation part is arranged below the feed pipe 6, an annular filter screen 11 coaxial with the cylinder 22 is arranged in a bottom cavity of the liquid-solid separation part, and a liquid discharge port 17 and; an intermittent deslagging mechanism is also arranged below the liquid-solid separation part.
The gas-liquid separation part comprises an exhaust port 25, an air supplement port 3 and a pressure sensor interface 26 which are arranged above the cylinder 22, a wire mesh demister 5 for blocking liquid drops is further arranged in a cavity of the gas-liquid separation part, gas overflowing from liquid is discharged from the exhaust port 25 after passing through the wire mesh demister 5, and the residual liquid phase and solid phase fall into the liquid-solid separation part falling to the bottom. The exhaust valve and the pressure sensor interface 26 installed on the exhaust port 25 are in pressure linkage, and the air compensating valve and the pressure sensor interface 26 installed on the air compensating port 3 are in pressure linkage, so that the pressure stability in the device can be effectively ensured, and the stability of the system function is improved.
The intermittent deslagging mechanism comprises a buffer bin 13 and a deslagging bin 16 positioned below the buffer bin 13, a loosening screw 12 is arranged in the buffer bin 13, an upper valve 14 is arranged above the deslagging bin 16, a lower valve 15 is arranged below the deslagging bin, and the upper valve 14 and the lower valve 15 are alternately opened when the intermittent deslagging mechanism is used. Preferably, the opening time interval of the upper valve 14 is determined according to the flow rate of the feeding pipe 6, when the flow rate is large, the opening time interval of the upper valve 14 is shorter, and when the flow rate is small, the opening time interval of the upper valve 14 is longer.
The annular filter screen 11 in the cavity of the liquid-solid separation part is fixed on the inner wall of the cylinder 22, the rotating shaft 8 penetrates through the cylinder 22 and the buffer bin 13, and the rotating shaft 8 is fixed with the cylinder 22 through a fixing frame 19, as shown in fig. 2. The shaft section row that the pivot 8 is located the liquid-solid separation part that annular filter screen 11 position corresponds sets up a plurality of brushes 20 of scraping, and motor 1 drives pivot 8 through reduction gear 2 and rotates, drives to scrape brush 20 and scrapes the material sediment on filter screen 11 surface, can satisfy the needs completely when the material sediment is less. Preferably, the number of the scraping brushes 20 is 4-6, and the distance between the scraping brushes 20 and the filter screen 11 is 3-5 mm.
The inside material sediment of annular filter screen 11 gets into the buffering storehouse 13 buffer memory after scraping brush 20, and pivot 8 is located and is equipped with not hard up spiral 12 on the shaft part in buffering storehouse 13, and not hard up spiral 12 plays the stirring effect and promotes solid residue downstream, prevents that solid residue gathering from blockking up equipment, and through opening upper valve 14, the material sediment in the buffering storehouse 13 falls into row sediment storehouse 16, opens lower valve 15, and the material sediment is discharged. Preferably, the distance between the loosening screw 12 and the side wall in the buffer storage bin 13 is 20-30 mm, the rotation movement of the loosening screw 12 is facilitated, and the loosening screw can effectively avoid the pressure of residues on an upper valve so as to loosen the residues in the buffer storage bin. The loose spiral 12 is preferably a shaftless spiral.
The back flushing mechanism comprises a back flushing fluid inlet 9, the back flushing fluid inlet 9 is arranged on the outer wall of the cylinder body 22 corresponding to the position of the annular filter screen 11, a check valve 10 is further arranged at the back flushing fluid inlet 9, and the check valve 10 prevents high-pressure gas from being blocked and returned by residues on the annular filter screen 11. The back-blowing fluid inlet 9 is externally connected with a gas supply device, the annular filter screen 11 is regenerated by back-blowing gas, and the back-blowing gas preferably adopts air or other on-site pressurized gas. Meanwhile, the liquid outlet 17 is also provided with an adjusting valve 18, and when the blowback fluid inlet 9 is filled with blowback fluid, the adjusting valve 18 is closed.
Further preferably, the pressure inside the three-phase separator of the invention is usually maintained at 0.4 ± 0.05MPa, and the pressure of the blowback gas is 0.2-0.3 MPa higher than the pressure inside the three-phase separator. The gas-liquid separation part space at the upper part of the three-phase separator is 10-15 times, preferably 15 times of the volume of the buffer storage bin 13.
The volume of the buffer storage bin 13 is larger than that of the slag discharging bin 16, the volume of the buffer storage bin 13 is preferably 1.5-2 times that of the slag discharging bin 16, more solid residues can be temporarily stored, the slag does not need to be discharged in real time, much time can be saved for workers, and the workers can open the upper valve and the lower valve at intervals to discharge the slag.
Preferably, a liquid level meter for monitoring the liquid level inside the barrel 22 is further included, and two ends of the liquid level meter are respectively connected with an upper port 23 of the liquid level meter, which is arranged close to the barrel wall below the feeding pipe 6, and a lower port 21 of the liquid level meter, which is arranged at the barrel wall above the annular filter screen 11.
The invention relates to a continuous exhaust and intermittent deslagging three-phase separator with backwashing, which comprises the following components in use:
the material enters the three-phase separator through the feeding pipe 6 through the nozzle 7, the overflowed gas is discharged from the exhaust port 25 after passing through the wire mesh demister 55, and the residual liquid phase and solid phase fall into the liquid-solid separation part below the feeding pipe 6; liquid phase and solid phase are separated through the action of pressure difference, the liquid phase is discharged from a liquid discharge port 17 through a regulating valve 18, solid residues are enriched on the surface of an annular filter screen 11, a motor 1 drives a speed reducer 2 to drive a rotating shaft 8 to rotate after speed reduction, a scraping brush 20 on the motor drives the residues to be brushed off and fall into a buffer storage bin 13, an upper valve 14 is opened after a period of time, the residues in the buffer storage bin 13 fall into a residue discharge bin 16, the upper valve 14 is closed, and a lower valve 15 is opened to discharge residues.
The backwashing operation of the invention has two monitoring modes:
the first monitoring mode is that a liquid level meter monitors that when the liquid level inside the three-phase separator is too high, the blockage is serious, the regulating valve 18 is closed at the moment, high-pressure fluid enters the annular filter screen 11 through the back flushing fluid inlet 9 and the check valve 10, and the annular filter screen 11 is subjected to regeneration treatment operation.
The second monitoring mode is that a differential pressure sensor is used for monitoring, when the internal pressure of the cavity of the three-phase separator and the differential pressure of an annular cavity formed between the annular filter screen 11 and the wall of the cylinder body 22 are monitored to reach 0.2MPa, the annular filter screen 11 is seriously blocked, at the moment, the regulating valve 18 is closed, high-pressure fluid enters the annular filter screen through the back flushing fluid inlet 9 and the check valve 10, and the annular filter screen 11 is subjected to regeneration treatment operation.
Claims (8)
1. The three-phase separator with the back flush function is characterized by comprising a cylinder body (22), wherein a feeding pipe (6) is arranged in the cylinder body (22), a plurality of nozzles (7) are arranged on the pipe wall of the feeding pipe (6), a gas-liquid separation part capable of exhausting gas is arranged above the feeding pipe (6), and a liquid-solid separation part is arranged below the feeding pipe (6); an annular filter screen (11) coaxial with the cylinder body (22) is arranged in a bottom cavity of the liquid-solid separation part, and a liquid outlet (17) and a back washing mechanism are arranged on the outer wall of the cylinder body (22) at the outer side of the annular filter screen (11);
an intermittent deslagging mechanism is arranged below the liquid-solid separation part, the intermittent deslagging mechanism comprises a buffer bin (13) and a deslagging bin (16) positioned below the buffer bin (13), an upper valve (14) is arranged at the joint of the buffer bin (13) and the deslagging bin (16), a lower valve (15) is arranged below the deslagging bin (16), and the upper valve (14) and the lower valve (15) are opened alternately;
the top of the barrel (22) is provided with a motor (1), a rotating shaft (8) penetrating through the barrel (22) and the buffer bin (13) is fixedly connected below the motor (1), the rotating shaft (8) is driven to rotate by the motor (1), a plurality of scraping brushes (20) are arranged on a shaft section of the annular filter screen (11) located at a liquid-solid separation part of the rotating shaft (8), a loosening spiral (12) is arranged on a shaft section of the buffer bin (13), the scraping brushes (20) and the loosening spiral (12) can be driven to rotate when the rotating shaft (8) rotates, solid residues on the annular filter screen (11) can be brushed down when the scraping brushes (20) rotate, and the brushed solid residues fall into the buffer bin (13);
the device also comprises a differential pressure sensor which is used for monitoring the differential pressure of an annular cavity formed between the annular filter screen (11) and the wall of the cylinder body (22);
the back flushing mechanism comprises a back flushing fluid inlet (9), a check valve (10) is installed at the back flushing fluid inlet (9), and the back flushing mechanism also comprises an adjusting valve (18) arranged on a liquid outlet (17), wherein when the back flushing fluid inlet (9) is communicated with back flushing fluid through an external fluid supply device, the adjusting valve (18) is closed.
2. The continuous-exhaust intermittent-slag-discharge three-phase separator with backwashing according to claim 1, wherein the gas-liquid separation part comprises an exhaust port (25), an air supplement port (3) and a pressure sensor interface (26) which are arranged above the cylinder (22), the exhaust valve arranged on the exhaust port (25) is in pressure linkage with the pressure sensor interface (26), and the air supplement valve arranged on the air supplement port (3) is in pressure linkage with the pressure sensor interface (26).
3. The continuous exhaust and intermittent slag discharge three-phase separator with backwashing according to claim 2, wherein a wire mesh demister (5) for blocking liquid drops is further provided in the chamber of the gas-liquid separation portion.
4. The continuous-exhaust intermittent-slag-discharge three-phase separator with backwashing according to claim 1, wherein the volume of a cavity of the gas-liquid separation part is 10-15 times of the volume of the buffer bin, and the volume of the buffer bin (13) is larger than that of the slag discharge bin (16).
5. The continuous-exhaust intermittent-slag-discharge three-phase separator with backwashing according to claim 1, wherein the pressure inside the three-phase separator is maintained at 0.4 ± 0.05MPa, and the pressure of the backwashing fluid introduced by the backwashing mechanism is 0.2 to 0.3MPa higher than the pressure inside the three-phase separator.
6. The continuous-exhaust and intermittent-slag-discharge three-phase separator with backwashing according to claim 1, further comprising a liquid level meter for monitoring the liquid level inside the cylinder (22), wherein two ends of the liquid level meter are respectively connected with an upper interface (23) of the liquid level meter arranged on the cylinder wall near the lower part of the feed pipe (6) and a lower interface (21) of the liquid level meter arranged on the cylinder wall above the annular filter screen (11).
7. The continuous-exhaust intermittent-slag-discharge backwashing three-phase separator according to claim 1, wherein the scraping brush (20) is 3-5 mm away from the annular filter screen (11); the distance between the loose screw (12) and the side wall of the buffer bin (13) is 20-30 mm.
8. The continuous-exhaust intermittent-slag-discharge three-phase separator with backwashing according to claim 1, wherein the feed pipe (6) is arranged at an upper middle position of the cylinder (22) and is fixed with the inner wall of the cylinder (22) in a triangular mode.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109603260A (en) * | 2018-12-29 | 2019-04-12 | 河北银隆新能源有限公司 | Filter device |
| CN109609229B (en) * | 2019-01-29 | 2020-11-24 | 嘉兴极客旅游用品有限公司 | Gas-liquid separation device for natural gas production |
| CN111714981A (en) * | 2019-03-22 | 2020-09-29 | 宝山钢铁股份有限公司 | Oil mist collecting and filtering device for oiling machine |
| CN110801669A (en) * | 2019-10-12 | 2020-02-18 | 西安交通大学 | Three-phase separation system and method with self-cleaning and residue dewatering functions |
| CN110613969B (en) * | 2019-11-01 | 2022-05-06 | 山东锐渤森新能源技术服务有限公司 | Degassing and filtering device for petroleum drilling fluid |
| CN112915636B (en) * | 2021-01-27 | 2023-05-30 | 大庆中联信实石油科技开发有限公司 | Concentration and purification equipment for producing temporary plugging agent |
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| CN115124213B (en) * | 2022-06-20 | 2023-12-15 | 绍兴泰谱环保科技有限公司 | Energy-saving and environment-friendly sludge treatment equipment |
| CN115180308A (en) * | 2022-07-11 | 2022-10-14 | 山西鸿泰来环保有限公司 | Multifunctional tar tank |
| CN117282161B (en) * | 2023-11-24 | 2024-03-08 | 广东铨冠智能科技有限公司 | Machine tool chip filtering treatment device |
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| CN103566698A (en) * | 2013-11-20 | 2014-02-12 | 四川科宏石油天然气工程有限公司 | Gas-liquid-solid three-phase separator |
| CN105597377A (en) * | 2016-03-10 | 2016-05-25 | 西安交通大学 | Three-phase separation device for under-pressure condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566698A (en) * | 2013-11-20 | 2014-02-12 | 四川科宏石油天然气工程有限公司 | Gas-liquid-solid three-phase separator |
| CN105597377A (en) * | 2016-03-10 | 2016-05-25 | 西安交通大学 | Three-phase separation device for under-pressure condition |
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