CN111394118A

CN111394118A - Ageing oil and fatlute minimizing crude oil recovery processing integration sled dress device

Info

Publication number: CN111394118A
Application number: CN202010416554.5A
Authority: CN
Inventors: 李资收; 陆涛; 陈鲁宁; 高好勇; 张学伟; 杜长玉; 宫传奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-07-10

Abstract

The invention provides an aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device, and relates to the technical field of oil gas development. The aging oil and oil sludge reduction crude oil recovery processing integrated skid-mounted device comprises a phase mixer, a steam device, a first lifting pump, a primary high-frequency cleaning device, a second lifting pump, a secondary flotation device, a third lifting pump, a three-phase centrifuge, a fourth lifting pump, a conveyor, a high-speed centrifuge, an oil transfer pump, an electric control chamber and a dosing device, wherein the phase mixer is fixedly connected with the first lifting pump through a pipeline. The aging oil and oil sludge reduction treatment device provided by the invention has the advantages of high integration degree and high automation degree, can realize unattended operation, can meet the requirement of field production by 2-3 prying, saves the occupied space, realizes water separation and water mixing and partial waste heat utilization, and mainly realizes that 95% of crude oil of the aging oil and oil sludge sand can be recycled, thereby realizing the real resource utilization of dangerous wastes.

Description

Ageing oil and fatlute minimizing crude oil recovery processing integration sled dress device

Technical Field

The invention relates to the technical field of oil gas development, in particular to an integrated skid-mounted device for crude oil recovery and treatment by aging oil and oil sludge reduction.

Background

A large amount of wastes (aging oil, oil sludge sand and tank bottom sediment) generated in the exploration, exploitation and gathering processes of the petroleum industry have high oil content and cannot be directly utilized, and crude oil cannot be recovered to cause a large amount of resource waste; the air-dried material is directly stacked and air-dried or buried underground, which causes serious pollution to the environment; at present, the oil-containing sludge is classified as dangerous solid waste (HW 08) by the country and is strictly controlled. The traditional process method has the characteristics that the components of the aging oil and the oil sludge sand are complex and difficult to treat, the recovery rate of the treated crude oil is low or the crude oil cannot be recovered, and the like, and aiming at the difficult-to-treat materials, the conventional homogenizing-dosing-heating treatment process is difficult to achieve the purposes of purification and recycling, reduction and harmless treatment of the crude oil. To this end, researchers have proposed new treatments, such as patent publications: CN102815806A discloses a dehydration treatment method for aging oil, which comprises the steps of adding a stripping agent into the aging oil, performing emulsion breaking and performing oil-water separation treatment; patent publication No.: CN 204342740U discloses a treatment method of an aging oil recovery system, which comprises the following steps: adding medicine into aging oil to be treated and heating; filtering the homogenized material, separating sewage, silt and recovered oil in two centrifugal separators, and then entering a settling tank for subsequent oil-water separation in two centrifugal separators, wherein the water content is higher by about 3 percent through separation treatment; patent publication No.: CN208471996U discloses an aging oil dehydration treatment device, and the method comprises the following steps: heating the aging oil to above 80 ℃, breaking the wall by using ultrasonic waves to break the emulsion to break the stable structure of water-in-oil, and then, centrifugally separating the oil, water and solid substances in a centrifuge, wherein the water content of the oil product treated by the method is higher by about 5 percent, and the ash content is higher; patent publication No.: CN104445848B discloses a method and a device for treating aging oil and oily sediment; firstly adding clean water, heating to 40-80 ℃, pressurizing by steam, introducing ultrasonic waves of 15-50Hz after heating, adding aging oil or oil sludge sand into a tank for three-phase separation of oil, water and solid, and the patent publication number is as follows: CN102241998A discloses an oil sludge sand processing apparatus and technology, includes: the device comprises a heat carrier, a rotary kiln, an oil gas condensation recovery device and a pyrolysis treatment system; patent publication No.: CN204824551U discloses an oil field oil sludge sand three-phase separation system, which is characterized in that agents such as ferrous sulfate, polyaluminium chloride and the like are added by stirring, and then the mixture enters a three-phase centrifuge to separate oil, water and solids. However, these methods also have difficulty in meeting practical production requirements.

The method which is widely applied and has obvious treatment effect is an improvement of treatment process method and has high effect on reduction treatment. Although some process technologies are matched with medicaments to treat aging oil or oil sludge sand, oil-water-solid is effectively separated, and water in crude oil and oil in sludge sand are removed, the problems and side effects of low recovery rate, poor separation effect, high energy consumption, incapability of continuous production and the like are also generated, such as the problems that the treated oil product has high water content and the part of the oil product with high ash content which is difficult to recover in the water phase and the solid phase in the pretreatment process of the aging oil is discharged into a sewage system such as a combination station and the like to impact other production and the like caused by poor medicament selection in the pretreatment process; although the crude oil in the silt can be reduced to 0.3 percent by thermal cracking, the energy consumption is high, the resource waste caused by the unrecoverable crude oil is caused, the potential safety hazard is caused by high-temperature coking decomposition in the pyrolysis furnace, and the tail gas generated in the pyrolysis process and the products after the pyrolysis have no clear identification standard. The extraction method for treating aging and oil sludge sand has high requirements on materials, high difficulty in recovering an extracting agent and strong operability in a laboratory, and is not popularized in the current practical production.

Disclosure of Invention

The invention aims to provide an integrated skid-mounted device for recovery and treatment of aged oil and crude oil with reduced oil sludge, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: an aging oil and oil sludge reduction crude oil recovery processing integrated skid-mounted device comprises a phase mixer, a steam device, a first lifting pump, a first-stage high-frequency cleaning device, a second lifting pump, a second-stage flotation device, a third lifting pump, a three-phase centrifuge, a fourth lifting pump, a conveyor, a high-speed centrifuge, an oil transfer pump, an electric control chamber and a dosing device, wherein the phase mixer is fixedly connected with the first lifting pump through a pipeline, the phase mixer is fixedly connected with the steam device through a pipeline, the first lifting pump is fixedly connected with the first-stage high-frequency cleaning device through a pipeline, the first-stage high-frequency cleaning device is fixedly connected with the second lifting pump through a pipeline, the second lifting pump is fixedly connected with the second-stage flotation device through a pipeline, the second-stage flotation device is fixedly connected with the third lifting pump through a pipeline, and the third lifting pump is fixedly connected with the three-phase centrifuge through a pipeline, the three-phase centrifuge passes through pipeline and conveyer fixed connection, three-phase centrifuge passes through pipeline and high-speed centrifuge fixed connection, high-speed centrifuge passes through pipeline and, petroleum pump fixed connection, second grade flotation device passes through pipeline and fourth elevator pump fixed connection.

As a further scheme of the invention: the primary high-frequency cleaning device comprises a high-frequency pulse generator and a stirring device.

As a further scheme of the invention: the secondary flotation device comprises a coalescence filler and a micro-nano bubble machine.

As a further scheme of the invention: the dosing device is communicated with the pipeline between the first lifting pump and the primary high-frequency cleaning device through the pipeline.

As a further scheme of the invention: the dosing device is communicated with a pipeline between the primary high-frequency cleaning device and the second lifting pump through a pipeline.

A treatment method of an aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device comprises the following steps:

s1, heating the mixture of the aging oil and the oil cement and the sediment at the bottom of the tank, feeding the mixture into a demulsification reactor in a high-frequency pulse generator, and treating under the action of the high-frequency pulse generator and a chemical agent.

S2, adding a demulsifier after the first-stage high-frequency pulse chemical cleaning and separation, and preparing micro-nano nitrogen bubbles in a second-stage flotation device through a micro-nano bubble preparation system to realize second-stage cleaning and primary separation treatment.

S3, after the first-stage cleaning and the second-stage cleaning and separating treatment, the oil physically separated by the three-phase centrifuge can be fed into a crude oil removal treatment system in the united station, the mud-water mixture can be injected back, and the silt can be stacked to a drying plant for disposal.

And S4, feeding the oil physically separated by the three-phase centrifuge into a high-speed centrifuge, adding a demulsifier for re-separation, wherein the treated crude oil can be directly transported or transported, and the separated water can be directly recycled, cleaned and separated.

Further, according to the operation steps in S1, adding a cleaning and stripping agent into the aging oil and oil sludge water mixture under the steam heating condition, feeding the mixture into a high-frequency pulse generator, wherein the treatment time is 2-15 min, heating the mixture by a steam device, and adding the cleaning and stripping agent, the power of the high-frequency pulse generator is not less than 4KW, the heating temperature is not less than 50 ℃, the cleaning and stripping agent is a petroleum sulfonate accumulative surfactant, and the adding amount of the cleaning and stripping agent is 50/L-500/L.

Further, according to the operation steps in S2, the demulsifier and the micro-nano nitrogen bubbles are added for preparation, the treatment medium is added with a demulsifier and a reverse demulsifier, the demulsifier is selected from quaternary ammonium salts, phenolic amine resin and propylene oxide, the reverse demulsifier is one or a mixture of at least two of polyacrylamide, cationic polyacrylamide or anionic polyacrylamide, the adding amount of the demulsifier is 50-200 mg/L, and the adding amount of the reverse demulsifier is 10-50 mg/.

Further, according to the operation steps in S3, after the comprehensive treatment of primary high-frequency cleaning and secondary flotation separation, a lot of oil droplets with the particle size of 10-60 microns are remained in the material, which are not beneficial to natural sedimentation and flotation separation, a centrifugal method is adopted for gravity centrifugal separation, a three-phase centrifuge is reliably installed and physically separates and discharges the three phases with different density differences among oil, water and solid from different discharge outlets, the oil phase can enter a crude oil dehydration treatment system of a combined station after being discharged or is finely separated again, the water phase can return the residual part from a water outlet discharge part to enter a sewage treatment system, more than 95% of oil in the solid phase is separated and recovered, and the solid phase is transported to a stacking place or profile control and reinjection after being discharged.

Further, according to the operation steps in S4, after primary high-frequency cleaning, secondary flotation separation and three-phase centrifugal separation treatment, the water content in the oil phase is 3-10%, disc high-speed centrifugal separation is carried out again by adding a demulsifier, the adding amount of the demulsifier is 50-100 mg/L, the adding amount of the demulsifier is 50 mg/L-100 mg/L, finally, the water content of the oil separated by the high-speed centrifuge is less than or equal to 1%, the oil meets the requirement of external transportation, the separated water is recycled to the system for recycling, and the separated solid phase is subjected to profile control reinjection or stacking treatment.

The invention provides an integrated skid-mounted device for reducing crude oil recovery and treatment of aging oil and oil sludge. The method has the following beneficial effects:

1. the method for reducing the aged oil and the oil sludge is simple, low in operating cost, convenient to machine and transport, free of limitation of water quantity and field conditions, and high in practicability.

2. The aging oil and oil sludge reduction process provided by the invention has the advantages of small electric load, no VOC pollution in a closed treatment process, no high-temperature extraction in a high-frequency cleaning-flotation separation-three-phase centrifugal separation-high-speed centrifugal separation integrated skid-mounted device, strong impact resistance of equipment, low maintenance frequency, solid-phase oil-containing water, low oil-containing sewage, low water-containing rate in oil and stable operation.

3. The aging oil and oil sludge reduction treatment device provided by the invention has the advantages of high integration degree and high automation degree, can realize unattended operation, can meet the requirement of field production by 2-3 prying, saves the occupied space, realizes water separation and water mixing and partial waste heat utilization, and mainly realizes that 95% of crude oil of the aging oil and oil sludge sand can be recycled, thereby realizing the real resource utilization of dangerous wastes.

Drawings

Fig. 1 is a schematic diagram of a device for reducing aged oil and oil sludge and realizing crude oil return treatment.

In the figure: 1. a phase mixer; 2. a steam device; 3. a first lift pump; 4. a primary high-frequency cleaning device; 5. a high frequency pulse generator; 6. a stirring device; 7. a second lift pump; 8. a secondary flotation device; 9. a coalescing filler; 10. a micro-nano bubble machine; 11. a third lift pump; 12. a three-phase centrifuge; 13. a fourth lift pump; 14. a conveyor; 15. a high speed centrifuge; 16. an oil transfer pump; 17. an electric control chamber; 18. a medicine adding device.

Detailed Description

The invention will be further illustrated with reference to the following examples and drawings:

example 1: as shown in figure 1, the processing device comprises a vapor-liquid phase mixer 1, a steam device 2, a first lifting pump 3, a first-stage high-frequency cleaning device 4, a high-frequency pulse generator 5, a stirring device 6, a second lifting pump 7, a second-stage flotation device 8, coalescent fillers 9, a micro-nano bubble machine 10, a third lifting pump 11, a three-phase centrifuge 12, a fourth lifting pump 13, a conveyor 14, a high-speed centrifuge 15, an oil transfer pump 16, an electric control chamber 17 and a drug adding device 18 which are sequentially connected through pipelines, an electric instrument valve is connected with the electric control chamber through a cable, the high-frequency pulse generator 5 and the stirring device 6 are arranged in the first-stage high-frequency cleaning device 4, the coalescent fillers 9 and the micro-nano bubble machine 10 are arranged in the second-stage flotation device 8, the first-stage high-frequency cleaning device 4 and the second-stage flotation device 8 share a main frame structure and are arranged in a, a chemical adding device 18 and a high-speed centrifuge 15 are positioned in the same skid-mounted container, steam is generated, a device 2 is positioned in a container, firstly aging oil and oil sludge sediment are heated by steam of the steam device 2 in a storage tank or a container to be flowable in a phase mixer 1, a cleaning stripping agent is added through the skid-mounted chemical adding device 18, the aging oil and the oil sludge sediment are pumped into a primary high-frequency cleaning device 4 through a first lifting pump 3, the high-frequency cleaning device 4 is subjected to high-frequency pulse stirring cleaning and emulsion breaking in clay and other solid substances through a high-frequency pulse generator 5 and a stirring device 6, a demulsifier is added into the clay and other solid substances to be cleaned and separated, the clay and other solid substances are treated by the primary high-frequency cleaning device 4, the demulsifier is added and pumped into a secondary flotation device 8 through a variable-frequency second lifting pump 7, the demulsifier and the micro-nano demulsifier are coalesced and separated, after being treated by a secondary flotation device 8, the wastewater is lifted into a three-phase centrifuge 12 by a third lift pump 11, the water separated by the three-phase centrifuge 12 is partially recycled by an output part of a fourth lift pump 13 or output to an in-station sewage treatment system, the separated solid phase is conveyed to a skid-mounted external transportation to be conveyed to a formulated place in the station for stacking by a screw conveyor 14 or is mixed with the separated sewage for profile control and reinjection, the separated oil of the three-phase centrifuge 12 is connected into another skid-mounted high-speed separator 15 through a pipeline for re-dehydration separation and then is conveyed to an external purified oil storage tank by an oil conveying pump 16, the solid phase treated by the three-phase centrifuge 12 contains less than or equal to 5 percent of oil, the separated sewage contains less than or equal to 5 percent of oil and can meet the in-station sewage treatment system, the separated crude oil contains less than or equal to 5 percent of water and can meet the in-station crude oil treatment system, the crude oil is treated by the three-phase centrifuge 12, can meet the requirement of crude oil output, save energy, reduce emission and change waste into valuables.

Example 2, the treatment capacity of the aging oil is 5m3/h, the treatment method of the aging oil is that the temperature of a mixer is 70 ℃, the water content is 30%, the solid content is 5%, and the treatment method of the oil content is 65%, specifically, the heating temperature of a phase mixer is 80 ℃, the first-stage high-frequency cleaning time is 15min, the second-stage flotation separation is 15min, the nitrogen injection amount is 6L/min, the rotating speed of a three-phase centrifuge is 3800r/min, the feeding amount of the first-stage high-frequency cleaning device 4 is that a cleaning stripping agent (compounded by petroleum sulfonate and surfactant) is 300 mg/L, the feeding amount of the second-stage flotation device 8 is that a demulsifier (compounded by quaternary ammonium salt and propylene oxide) is 200 mg/L, the feeding amount of the three-phase centrifuge 12 is that a reverse demulsifier (compounded by cationic polymer) is 500 mg/L, the feeding amount of the high-speed centrifuge 15 is that the demulsifier (compounded by quaternary ammonium salt and propylene oxide) is 200 mg/L, and the operation time is 5.

From the above indices it can be seen that: after the aging oil is treated by the device, the recovery rate of crude oil can reach 95 percent, the problems that the aging oil is difficult to dehydrate and has high ash content are solved, simultaneously, the separated sewage can reach the standard and be reinjected, solid-phase impurities are extracted and concentrated, the subsequent treatment cost is saved, the economic benefit is created for the recovery of the crude oil, and the purposes of changing waste into valuable, saving energy and reducing emission are realized for enterprises.

Example 3, the treatment capacity of sediments at the bottom and in the tank is 10m3/h, the treatment device has a temperature of 50 ℃, a water content of 70%, a solid content of 10%, and an oil content of 25%, and the treatment method specifically comprises the steps of heating the mixed phase reactor at 60 ℃, performing primary high-frequency cleaning for 10min, performing secondary flotation for 20min, performing nitrogen injection for 10L/min, and performing three-phase centrifuge at a 12 rotation speed of 4000r/min, performing primary high-frequency cleaning for 4 at a feeding dosage of 300 mg/L for cleaning a stripping agent (petroleum sulfonate compounded with a surfactant), performing secondary flotation for 8 at a feeding dosage of 100 mg/L for a demulsifier (quaternary ammonium salt and propylene oxide), performing reverse demulsifier (cationic polymer compounded) for 12 at a feeding dosage of 1000 mg/L for the three-phase centrifuge, and performing high-speed centrifuge for 15 at a feeding dosage of 100 mg/L for 100 hours to separate oil, water and solid phase data.

From the above indices it can be seen that: after sediments at the bottom of the tank and in the pool are treated by the device, solid-phase substances can be reduced to 1/10, the crude oil recovery rate can reach 95%, the problem of difficult dehydration is solved, simultaneously, separated sewage can reach the standard and be reinjected, solid-phase impurities are extracted and concentrated, the subsequent treatment cost is saved, the economic benefit is created for crude oil recovery, and the energy conservation and emission reduction of changing waste into valuable is realized for enterprises.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides an ageing oil and fatlute minimizing crude oil recovery handles integration sled dress device, includes that phase blender (1), steam device (2), first elevator pump (3), one-level high frequency belt cleaning device (4), second elevator pump (7), second grade flotation device (8), third elevator pump (11), three-phase centrifuge (12), fourth elevator pump (13), conveyer (14), high speed centrifuge (15), oil transfer pump (16), automatically controlled room (17) and charge device (18), its characterized in that: the device comprises a phase mixer (1), a first lifting pump (3), a steam device (2), a first lifting pump (3), a one-level high-frequency cleaning device (4), a second lifting pump (7), a second flotation device (8), a third lifting pump (11), a three-phase centrifuge (12), a conveyor (14), a three-phase centrifuge (12), a high-speed centrifuge (15), a steam device (2), a steam device (1), a pipeline and a first lifting pump (3) which are fixedly connected, wherein the first lifting pump (1) is fixedly connected with the first lifting pump (4), the first high-frequency cleaning device (4) is fixedly connected with the second lifting pump (7) through a pipeline, the second lifting pump (7) is fixedly connected with the second flotation device (8) through a pipeline, the second flotation device (8) is fixedly connected with the third lifting pump (, The oil transfer pump (16) is fixedly connected, and the secondary flotation device (8) is fixedly connected with the fourth lift pump (13) through a pipeline.

2. The aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 1, characterized in that: the primary high-frequency cleaning device (4) comprises a high-frequency pulse generator (5) and a stirring device (6).

3. The aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 1, characterized in that: the secondary flotation device (8) comprises a coalescent filler (9) and a micro-nano bubble machine (10).

4. The aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 1, characterized in that: the dosing device (18) is communicated with a pipeline between the first lifting pump (3) and the primary high-frequency cleaning device (4) through a pipeline.

5. The aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 1, characterized in that: the dosing device (18) is communicated with a pipeline between the primary high-frequency cleaning device (4) and the second lifting pump (7) through a pipeline.

6. A treatment method of an aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device is characterized by comprising the following steps:

s1, heating the mixture of the aging oil and the oil cement and the sediment at the bottom of the tank, feeding the mixture into a demulsification reactor in a high-frequency pulse generator (5), and treating under the action of the high-frequency pulse generator (5) and a chemical agent;

s2, adding a demulsifier after the primary high-frequency pulse chemical cleaning and separation, and preparing micro-nano nitrogen bubbles in a secondary flotation device (8) through a micro-nano bubble preparation system to realize secondary cleaning and primary separation treatment;

s3, after the first-stage cleaning and separation treatment and the second-stage cleaning and separation treatment, the oil physically separated by a three-phase centrifuge (12) can be fed into a crude oil removal treatment system in a combined station, a mud-water mixture can be injected back, and silt can be stacked to a drying plant for disposal;

s4, the oil physically separated by the three-phase centrifuge (12) enters a high-speed centrifuge (15) and is added with a demulsifier for re-separation, the treated crude oil can be directly transported or transported, and the separated water can be directly reused for cleaning and separation.

7. The treatment method of the integrated skid-mounted device for the aging oil and oil sludge reduction crude oil recovery treatment according to the claim 6, characterized in that according to the operation step of S1, the aging oil and oil sludge water mixture is added with a cleaning and stripping agent into the high-frequency pulse generator (5) under the steam heating condition, the treatment time is 2min-15min, the cleaning and stripping agent is added through heating of the steam device (2), the power of the high-frequency pulse generator (5) is not less than 4KW, the heating temperature is not less than 50 ℃, the cleaning and stripping agent is selected from petroleum sulfonate accumulating surfactant, and the adding amount of the cleaning and stripping agent is 50/L-500/L.

8. The treatment method of the aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 6, wherein the demulsifier is prepared from the micro-nano nitrogen bubbles according to the operation step in S2, the treatment medium is added with a demulsifier and a reverse demulsifier, the demulsifier is selected from quaternary ammonium salts, phenolic amine resins and propylene oxide, the reverse demulsifier is one or a mixture of at least two of polyacrylamide, cationic polyacrylamide or anionic polyacrylamide, the dosage of the demulsifier is 50-200 mg/L, and the dosage of the reverse demulsifier is 10-50 mg/L.

9. The treatment method of the integrated skid-mounted device for the aged oil and sludge reduction and crude oil recovery treatment according to claim 6, it is characterized in that according to the operation steps in S3, after primary high-frequency cleaning and secondary flotation separation comprehensive treatment, the particle size of a lot of oil droplets in the materials is 10-60 microns, the oil droplets are not beneficial to natural sedimentation and flotation separation, a centrifugal method is adopted for gravity centrifugal separation, a three-phase centrifugal machine (12) is used for separating and reliably storing three phases of oil, water and solid with different density differences, the three phases are separately discharged from different discharge outlets, the oil phase can enter a crude oil dehydration treatment system of a combined station after being discharged or be finely separated again, the water phase is discharged from a water outlet part and recycled, the rest part enters a sewage treatment system, more than 95% of the oil in the solid phase is separated and recovered, and the solid phase is transported to a stacking place or profile control and reinjection after being discharged.

10. The treatment method of the aging oil and oil sludge reduction crude oil recovery treatment integrated skid-mounted device according to claim 6, characterized in that after the primary high-frequency cleaning, the secondary flotation separation and the three-phase centrifugal separation treatment are carried out according to the operation steps in S4, the water content in the oil phase is 3-10%, disc high-speed centrifugal separation is carried out again by adding a demulsifier, the adding amount of the demulsifier is 50-100 mg/L, the demulsifier is propylene oxide, the adding amount of the demulsifier is 50 mg/L-100 mg/L, finally, the water content of the oil separated by the high-speed centrifuge is less than or equal to 1%, the requirement of external transportation is met, the separated water is recycled to a system, and solid phase profile control reinjection or stacking treatment is separated.