CN210736662U - Ageing oil treatment device - Google Patents
Ageing oil treatment device Download PDFInfo
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- CN210736662U CN210736662U CN201921581485.2U CN201921581485U CN210736662U CN 210736662 U CN210736662 U CN 210736662U CN 201921581485 U CN201921581485 U CN 201921581485U CN 210736662 U CN210736662 U CN 210736662U
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Abstract
The utility model relates to an aging oil treatment device, throw feeder apparatus, one-level centrifugal device, buffer tank, force (forcing) pump, mechanical breakdown of emulsion device, second grade centrifugal device and air supporting deoiling device including charge pump, quenching and tempering retort, biological demulsifier. The utility model discloses an ageing oil treatment device can realize effective recovery and the water cyclic utilization of oil, is provided with biological demulsifier and throws feeder apparatus and mechanical breakdown of emulsion device, combines together biological demulsification and mechanical breakdown of emulsion, on the one hand to oil phase and aqueous phase all can not cause secondary pollution at biological demulsifier breakdown of emulsion in-process, on the other hand two kinds of breakdown of emulsion technologies combine together can improve ageing oil treatment device separation water, the reliability and the separation efficiency of oil, reduce fault rate and energy consumption moreover. And the utility model discloses an ageing oil processing apparatus adopts sled dress formula structure, and the transportation is convenient, area is little, the installation is quick and easy to maintain.
Description
Technical Field
The utility model belongs to the technical field of the oil field ageing oil treatment, concretely relates to ageing oil processing apparatus.
Background
The aging oil belongs to O/W (oil in water) type emulsion, has higher zeta potential (electromotive potential), has very good thermal stability and chemical stability, and is very difficult to dehydrate. Compared with the purified oil, the aging oil in the oil field has higher water content of more than 50m percent on average, larger fluctuation of the water content within the range of 40 m-80 m percent, and the most of water still well emulsifies with oil although the separation of free water is caused by low-temperature demulsification or standing. The solid phase in the aging oil mainly comprises FeS colloidal particles and mechanical impurities, and FeS is used as an oil/water interface active substance, so that oil/water emulsification is easily caused, and the generation of an intermediate transition layer in oil/water is promoted. The aging oil and the purified oil both have reduced viscosity with the increase of temperature, but the aging oil has 2 to 5 times of the viscosity of the purified oil at the same temperature, and the viscosity change is smaller with the increase of temperature.
In the middle and later development stages of oil fields, the problem of aging oil begins to be prominent, the oil field dehydration exceeds the standard, the quality of the exported purified oil is unstable, and the normal operation of crude oil dehydration and water treatment facilities of the oil fields is threatened. The existing aging oil treatment device generally adopts a single demulsification technology, such as chemical demulsification, ultrasonic demulsification or distillation, so that the aging oil treatment device has the problems that the aging oil treatment device is difficult to achieve the control indexes of the water content in oil and the oil content in water, the treatment effect is unstable, the treatment cost is high and the like. Therefore, the efficient aging oil treatment device with low treatment cost is designed, and the device has important practical significance.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides an ageing oil processing apparatus. The to-be-solved technical problem of the utility model is realized through following technical scheme:
the utility model provides an ageing oil processing apparatus, include: a feed pump, a conditioning reaction tank, a biological demulsifier adding device, a primary centrifugal device, a buffer tank, a pressure pump, a mechanical demulsification device, a secondary centrifugal device and an air flotation oil removal device, wherein,
the feed pump, the conditioning reaction tank, the primary centrifugal device, the buffer tank, the pressure pump, the mechanical demulsification device and the secondary centrifugal device are sequentially connected through pipelines;
a heat exchange coil is arranged at the bottom of the tempering reaction tank, a mixing stirrer is arranged above the heat exchange coil, a chemical inlet is formed in the top of the tempering reaction tank, and the chemical inlet is connected with the biological demulsifier adding device;
a slag outlet is formed at the bottom of the primary centrifugal device;
an oil outlet and a water outlet are formed in the secondary centrifugal device, and the water outlet is connected with the air floatation oil removal device;
the air flotation oil removing device is provided with a first outlet and a second outlet, and the first outlet is connected to a feeding hole of the quenching and tempering reaction tank.
In an embodiment of the present invention, the primary centrifugal device is a horizontal decanter centrifuge.
In one embodiment of the present invention, the second stage centrifugal device is a disk centrifuge.
The utility model discloses an embodiment, still include the mud storage tank, the mud storage tank with one-level centrifugal device's slag notch is connected.
The utility model discloses an in one embodiment, still include the oil storage tank, the oil storage tank with second grade centrifugal device's oil-out is connected.
In an embodiment of the utility model, still include the water storage tank, the water storage tank with the second exit linkage of air supporting deoiling device.
In an embodiment of the present invention, the aging oil treatment device of any one of the above embodiments is of a skid-mounted structure.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses an ageing oil treatment device is provided with biological demulsifier and throws feeder apparatus and mechanical demulsification device, combines together biological demulsification and mechanical demulsification, on the one hand at biological demulsifier demulsification in-process to oil phase and aqueous phase all can not cause secondary pollution, on the other hand two kinds of demulsification technologies combine together can improve ageing oil treatment device separation water, the reliability and the separation efficiency of oil, reduce fault rate and energy consumption moreover. And the utility model discloses an ageing oil processing apparatus adopts sled dress formula structure, and the transportation is convenient, area is little, the installation is quick and easy to maintain.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an aging oil treatment device provided by the embodiment of the present invention.
Description of the reference numerals
1-a feed pump; 2-quenching and tempering a reaction tank; 201-heat exchange coil; 202-a mixing agitator; 3-a biological demulsifier adding device; 4-a first-stage centrifugal device; 5-a buffer tank; 6-a pressure pump; 7-a mechanical demulsification device; 8-a secondary centrifuge; 9-air flotation oil removing device; 10-a sludge storage tank; 11-an oil storage tank; 12-water storage tank.
Detailed Description
In order to further explain the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and the detailed embodiments of the present invention with respect to an aging oil treatment device according to the present invention.
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. The technical means and effects of the present invention to achieve the predetermined objects can be more deeply and specifically understood through the description of the specific embodiments, however, the attached drawings are only for reference and description and are not intended to limit the technical solution of the present invention.
Example one
Please refer to fig. 1, fig. 1 is a schematic structural diagram of an aging oil treatment apparatus provided in an embodiment of the present invention, as shown in the figure, the aging oil treatment apparatus of the present invention includes: the system comprises a feed pump 1, a conditioning reaction tank 2, a biological demulsifier adding device 3, a primary centrifugal device 4, a buffer tank 5, a pressure pump 6, a mechanical demulsification device 7, a secondary centrifugal device 8, an air floatation deoiling device 9, a sludge storage tank 10, an oil storage tank 11 and a water storage tank 12. Specifically, a feed pump 1, a conditioning reaction tank 2, a primary centrifugal device 4, a buffer tank 5, a booster pump 6, a mechanical demulsification device 7 and a secondary centrifugal device 8 are sequentially connected through pipelines. Aging oil stock solution to be treated enters a tempering reaction tank 2 through a feeding pump 1, a heat exchange coil 201 is arranged at the bottom of the tempering reaction tank 2, a mixing stirrer 202 is arranged above the heat exchange coil 201, a medicine inlet is arranged at the top of the tempering reaction tank 2 and is connected with a biological demulsifier adding device 3, in the embodiment, a biological demulsifier is filled in the biological demulsifier adding device 3 and reacts with the aging oil stock solution entering the tempering reaction tank 2 to complete primary demulsification. The biological demulsifier is a green preparation produced by microbial fermentation, has good wettability, surface/interface activity and demulsification universality, and can be used for treating sump oil from different sources and with different compositions. After the biological demulsifier is added into the dirty oil, the good permeability of the biological demulsifier is beneficial to the rapid dispersion in the oil phase, the high-efficiency surface/interface activity and the special conical hydraulics structure are beneficial to the adsorption of the medicament on the interface of emulsion particles, and the good hydrophilicity can also promote the oil desorption on the surface of the solid, thereby separating the solid sediment from the oil phase. In addition, the biological demulsifier also has efficient viscosity reduction characteristic, and can directly reduce the viscosity of heavy crude oil, thereby being beneficial to phase separation after demulsification. The biological demulsifier is adopted for demulsification, and secondary pollution to an oil phase and a water phase can not be caused. The heat exchange coil 201 exchanges heat through the liquid in the steam or hot water conditioning reaction tank 2 to ensure that the reaction temperature in the conditioning reaction tank 2 is controlled to be above 40 ℃, and the mixing stirrer 202 enables the biological demulsifier to be fully mixed with the stock solution in the conditioning reaction tank 2 through stirring to accelerate the demulsification rate.
Further, a slag outlet is arranged at the bottom of the first-level centrifugal device 4, and the sludge storage groove 10 is connected with the slag outlet of the first-level centrifugal device 4. In this embodiment, the primary centrifugal device 4 is a horizontal screw centrifuge, the aging oil subjected to biological demulsification is subjected to solid-liquid separation by using a centrifugal separation principle, the rotation speed of the horizontal screw centrifuge is 2000rpm-3000rpm, a liquid phase subjected to solid-liquid separation enters the buffer tank 5, and solid-phase sludge enters the sludge storage tank 10. The liquid phase entering the buffer tank 5 is conveyed to a mechanical demulsification device 7 through a booster pump 6 to be subjected to secondary demulsification. The mechanical demulsification device 7 drives the vibration device to generate high-frequency vibration by utilizing the excitation action generated by the excitation system, and then the high-frequency vibration acts on the emulsified oil and the aged oil through the vibration medium, namely, the mixed liquid is subjected to vibration shearing action, so that the interfacial force of oil-in-oil and oil-in-water is damaged, and the demulsification separation is realized.
Further, an oil outlet and a water outlet are arranged on the second-stage centrifugal device 8, the water outlet is connected with the air floatation oil removal device 9, and the oil storage tank 11 is connected with the oil outlet of the second-stage centrifugal device 8. In this embodiment, the secondary centrifugal device 8 is a disc centrifuge, the rotation speed of the disc centrifuge is greater than 4000rpm, the disc centrifuge applies centrifugal force to the oil-water phase after the second demulsification to perform oil-water separation, so as to promote coalescence and stratification of particles after demulsification, the oil phase with the water content reaching the standard enters the oil storage tank 11 through the oil outlet, and the oily wastewater enters the air-flotation oil removal device 9 through the water outlet. Specifically, the air flotation oil removing device 9 adopts liquid seal rotational flow air flotation, and is a two-stage air flotation structure of inner cylinder rotational flow air flotation and outer cylinder vertical flow air flotation, so that oil-water separation treatment can be further performed on the oily wastewater, the separated water phase enters the water storage tank 12 through the second outlet, and the separated oil phase with the water content not reaching the standard returns to the quenching and tempering reaction tank 2 through the first outlet and is treated again.
Further, the aging oil treatment device of the embodiment adopts a skid-mounted structure, that is, the feed pump 1, the conditioning reaction tank 2, the biological demulsifier adding device 3, the primary centrifugal device 4, the buffer tank 5, the pressure pump 6, the mechanical demulsification device 7, the secondary centrifugal device 8, the air floatation oil removal device 9, the sludge storage tank 10, the oil storage tank 11 and the water storage tank 12 are integrated on a whole base, so that the aging oil treatment device can be integrally mounted or moved, and has small occupied area and easy maintenance.
The working process of the aging oil treatment device of the embodiment is as follows: the aging oil stock solution to be treated enters a conditioning reaction tank 2 through a feeding pump 1, and reacts with a biological demulsifier added from a biological demulsifier adding device 3 in the conditioning reaction tank 2 to carry out first biological demulsification. And after the first biological demulsification is finished, the treated oil enters a first-stage centrifugal device 4, the aged oil subjected to biological demulsification is subjected to solid-liquid separation by using a centrifugal separation principle, a liquid phase subjected to solid-liquid separation enters a buffer tank 5, and solid-phase sludge enters a sludge storage tank 10. The liquid phase entering the buffer tank 5 is conveyed to a mechanical demulsification device 7 through a pressure pump 6 to be subjected to secondary mechanical demulsification, and the mechanical demulsification device 7 is used for performing vibration shearing action on the mixed liquid, so that interfacial force of oil-in-water and oil-in-water is destroyed, and demulsification separation is realized. The second mechanical demulsification is completed and then enters a second-stage centrifugal device 8, water and oil separation is carried out under the action of centrifugal force, particles are agglomerated and layered after demulsification is promoted, an oil phase with the standard water content enters an oil storage tank 11 through an oil outlet, oily wastewater enters an air floatation oil removing device 9 through a water outlet, the air floatation oil removing device 9 further carries out oil-water separation treatment on the oily wastewater, a separated water phase enters a water storage tank 12 through a second outlet, and the separated oil phase with the standard water content not reaching is returned to a tempering reaction tank 2 through a first outlet for cyclic treatment.
The aging oil treatment device is provided with the biological demulsifier adding device 3 and the mechanical demulsification device 7, and combines biological demulsification with mechanical demulsification, so that on one hand, no secondary pollution is caused to an oil phase and a water phase in the demulsification process of the biological demulsifier, on the other hand, the reliability and the separation efficiency of the aging oil treatment device for separating water and oil can be improved by combining two demulsification processes, and the failure rate and the energy consumption are reduced. Moreover, the aging oil treatment device of the embodiment adopts a skid-mounted structure, is convenient to transport, small in occupied area, rapid to install and easy to maintain.
Example two
The embodiment specifically describes a process for treating the aging oil in the oil field by using the aging oil treatment device described in the above embodiment.
Step 1: preheating aging oil, namely adding the aging oil to be treated into a tempering reaction tank to preheat to 40-60 ℃, and keeping for 1-2 hours;
step 2: biological demulsification, namely adding a biological demulsifier while preheating the aging oil, adding the biological demulsifier into a conditioning reaction tank by using a biological demulsifier adding device, mixing the aging oil and the biological demulsifier by using a mixing stirrer, and keeping the temperature at more than 40 ℃ for 0.5 hour to realize first biological demulsification;
and step 3: removing mud residues, removing the mud residues from the aging oil after the first biological demulsification through a horizontal screw centrifuge, wherein the rotating speed of the horizontal screw centrifuge is 2000rpm, feeding the removed mud residues into a mud storage tank, and feeding the residual oil-water mixture into a buffer tank;
and 4, step 4: the mechanical demulsification is carried out, wherein a pressure pump extracts the mixed liquid in the buffer tank to enter a mechanical demulsification device, and the mechanical demulsification device carries out vibration shearing action on the mixed liquid, so that the interfacial force of oil-in-oil and oil-in-water is destroyed, and the mechanical demulsification separation is realized;
and 5: removing water, feeding the oil-water phase subjected to mechanical demulsification into a disc centrifuge, wherein the rotating speed of the disc centrifuge is 4500rpm, separating oil from water under the centrifugal force action of the disc centrifuge, and recovering the oil phase with the water content reaching the standard;
step 6: and (3) removing oil, namely separating a small amount of oil in the residual oily sewage in the disc centrifuge by using an air floatation oil removing device, and recovering a water phase with the water quality reaching the standard.
The aging oil treatment process of the embodiment has the advantages that the oil and water output is continuous and stable, the applicability is wide for different oil content, water content and impurity content, and the water content of the crude oil reaches the standard and does not affect the water content of the crude oil output after entering the purification tank.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (7)
1. An aging oil treatment device, characterized by comprising: a feed pump (1), a conditioning reaction tank (2), a biological demulsifier adding device (3), a primary centrifugal device (4), a buffer tank (5), a pressure pump (6), a mechanical demulsification device (7), a secondary centrifugal device (8) and an air flotation deoiling device (9), wherein,
the feed pump (1), the conditioning reaction tank (2), the primary centrifugal device (4), the buffer tank (5), the booster pump (6), the mechanical demulsification device (7) and the secondary centrifugal device (8) are sequentially connected through pipelines;
a heat exchange coil pipe (201) is arranged at the bottom of the tempering reaction tank (2), a mixing stirrer (202) is arranged above the heat exchange coil pipe (201), a medicine inlet is formed in the top of the tempering reaction tank (2), and the medicine inlet is connected with the biological demulsifier adding device (3);
a slag outlet is formed at the bottom of the primary centrifugal device (4);
an oil outlet and a water outlet are formed in the secondary centrifugal device (8), and the water outlet is connected with the air floatation oil removal device (9);
the air flotation oil removing device (9) is provided with a first outlet and a second outlet, and the first outlet is connected to a feeding hole of the quenching and tempering reaction tank (2).
2. The aging oil treatment apparatus according to claim 1, wherein the primary centrifugal apparatus (4) is a horizontal screw centrifuge.
3. The aging oil treatment apparatus according to claim 1, wherein the secondary centrifugal device (8) is a disk centrifuge.
4. The aging oil treatment apparatus according to claim 1, further comprising a sludge storage tank (10), wherein the sludge storage tank (10) is connected with a slag outlet of the primary centrifugal device (4).
5. The aging oil treatment apparatus according to claim 1, further comprising an oil storage tank (11), wherein the oil storage tank (11) is connected with an oil outlet of the secondary centrifugal apparatus (8).
6. The aging oil treatment device according to claim 1, further comprising a water storage tank (12), wherein the water storage tank (12) is connected with the second outlet of the air floatation oil removal device (9).
7. The aging oil treatment apparatus according to any one of claims 1 to 6, wherein the aging oil treatment apparatus is of a skid-mounted structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581485.2U CN210736662U (en) | 2019-09-20 | 2019-09-20 | Ageing oil treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581485.2U CN210736662U (en) | 2019-09-20 | 2019-09-20 | Ageing oil treatment device |
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| Publication Number | Publication Date |
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| CN210736662U true CN210736662U (en) | 2020-06-12 |
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| CN201921581485.2U Active CN210736662U (en) | 2019-09-20 | 2019-09-20 | Ageing oil treatment device |
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| CN (1) | CN210736662U (en) |
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- 2019-09-20 CN CN201921581485.2U patent/CN210736662U/en active Active
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