CN212451147U - Three mud processing systems of oil refinery - Google Patents
Three mud processing systems of oil refinery Download PDFInfo
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- CN212451147U CN212451147U CN202021829029.8U CN202021829029U CN212451147U CN 212451147 U CN212451147 U CN 212451147U CN 202021829029 U CN202021829029 U CN 202021829029U CN 212451147 U CN212451147 U CN 212451147U
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Abstract
The utility model relates to a three-mud treatment system of an oil refinery, which comprises a pretreatment tank, a rotary drum centrifuge, a relay tank and a skid-mounted module, wherein the pretreatment tank is provided with a pretreatment tank inlet, a pretreatment tank water outlet and a pretreatment tank slag discharge port; the drum centrifuge is provided with a drum centrifuge inlet and a drum centrifuge water outlet; the relay slot is provided with a relay slot inlet and a relay slot outlet; the slag discharge port of the pretreatment tank is connected with the inlet of the rotary drum centrifuge through a first pipeline, the water discharge port of the rotary drum centrifuge is connected with the inlet of the relay tank through a second pipeline, and the outlet of the relay tank is connected with the input end of the skid-mounted module through a third pipeline. The utility model relates to a rationally, can guarantee that the mud, the sewage through the processing reach the environmental protection index to recoverable fuel oil for the useless treatment cost of enterprise's saving danger, solve traditional processing technology's not enough, adopt sled dress module equipment to save the time cost and the financial cost of infrastructure construction simultaneously.
Description
The technical field is as follows:
the utility model belongs to oil refinery pollutant handles the field, especially relates to a three mud processing systems of oil refinery.
Background art:
the oily sludge (three sludge) of petroleum refining enterprises mainly comes from an oil separation tank, a flotation tank, a biochemical treatment tank, a crude oil dehydration tank, an oil storage tank and a sump oil tank. These oil-containing sludges generally contain hydrocarbon compounds, benzene compounds, phenol compounds, anthracene compounds, and the like. The emulsion is complete in emulsification and high in viscosity, belongs to a stable multiphase system, and has the defects of difficulty in thorough sedimentation of a solid phase and great treatment difficulty. At present, the oily sludge is generally treated by adopting a direct landfill mode, but harmful substances and crude oil which is not easy to decompose in the oily sludge can permeate and diffuse, and serious pollution is caused to surrounding soil, water and air.
In recent years, with the improvement of the requirements of national environmental regulations, the environmental law enforcement is increasing, and the pollution control and resource utilization of solid waste generated in the production process become important problems in the petroleum industry. Oily sludge has been listed as waste mineral oil (HW 08 family) in the national records of hazardous wastes, and related laws such as the national clean production promotion law and the solid waste environmental pollution prevention and control law also require that the oily sludge be subjected to harmless treatment.
Most of domestic petroleum refining enterprises have earlier construction time, laggard treatment technology and old equipment, accumulate a large amount of old mud, and various chemical compositions of the oil-containing sludge are interacted for more than ten years or even decades, so that the compositions are more stable, the emulsification of oil substances is more serious, and the demulsification and flocculation effects of the cationic polyacrylamide serving as the flocculant are insufficient.
In the actual operation process of a three-phase or two-drum centrifuge, when the solid content in sludge is high to a certain degree or the demulsification flocculation effect is poor, the dewatering effect of the centrifuge is poor, which is mainly shown in that the liquid content of centrifugal mud is too high, and the centrifugal liquid contains a large amount of organic matters and is black. If the black liquid is directly injected into a water system for treatment, a large amount of normal sewage is polluted into black. At present, most of refining and chemical enterprises pump the black liquid into an oil separation tank and a flotation tank, but the oil separation and flotation cannot effectively treat the black water, so that water quality impact and vicious cycle are caused to biochemical units.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a three mud processing system of oil refinery is provided, reasonable in design can guarantee that the mud, the sewage of process treatment reach the environmental protection index.
In order to realize the purpose, the utility model discloses a technical scheme is: a three-sludge treatment system for an oil refinery comprises a pretreatment tank, a rotary drum centrifuge, a relay tank and a skid-mounted module, wherein the pretreatment tank is provided with a pretreatment tank inlet, a pretreatment tank water outlet and a pretreatment tank slag outlet; the drum centrifuge is provided with a drum centrifuge inlet and a drum centrifuge water outlet; the relay slot is provided with a relay slot inlet and a relay slot outlet; the slag discharge port of the pretreatment tank is connected with the inlet of the rotary drum centrifuge through a first pipeline, the water discharge port of the rotary drum centrifuge is connected with the inlet of the relay tank through a second pipeline, and the outlet of the relay tank is connected with the input end of the skid-mounted module through a third pipeline.
Further, the skid-mounted module comprises a reaction tank, a screw stacking machine, an inclined plate settling tank and an oil-water separator, wherein the reaction tank is provided with a reaction tank inlet and a reaction tank outlet; the screw stacking machine is provided with a screw stacking machine inlet, a screw stacking machine water outlet and a screw stacking machine oil outlet; the inclined plate settling tank is provided with an inclined plate settling tank inlet and an inclined plate settling tank slag discharge port; the oil-water separator is provided with an oil-water separator inlet and an oil-water separator water outlet; the inlet of the reaction tank is connected with the outlet of the relay tank through a third pipeline; the reaction tank outlet is connected with the inlet of the screw stacking machine through a fourth pipeline, the water outlet of the screw stacking machine is connected with the inlet of the inclined plate settling tank through a fifth pipeline, the slag discharge port of the inclined plate settling tank is connected with the inlet of the relay tank through a seventh pipeline, the oil discharge port of the screw stacking machine is connected with the inlet of the oil-water separator through a sixth pipeline, and the water outlet of the oil-water separator is connected with the inlet of the relay tank through an eighth pipeline and a seventh pipeline.
Furthermore, a first reaction chamber and a second reaction chamber which are communicated with each other are arranged in the reaction tank, a reaction tank feeder for adding the composite carrier flocculant is arranged at the top of the first reaction chamber, and a first reaction tank stirrer is arranged in the first reaction chamber; and a second reaction tank stirrer is arranged in the second reaction chamber.
Further, the rotary drum centrifuge is also provided with a rotary drum centrifuge slag discharge port; the screw stacking machine is also provided with a mud outlet of the screw stacking machine; the inclined plate settling tank is also provided with an inclined plate settling tank water outlet; the oil-water separator is also provided with an oil discharge port of the oil-water separator.
Furthermore, the relay slot inlet comprises a first relay slot inlet and a second relay slot inlet which are sequentially arranged from top to bottom, and the first relay slot inlet is connected with the second pipeline; and the inlet of the second relay groove is connected with a seventh pipeline.
Further, the pretreatment tank outlet comprises a first pretreatment tank outlet, a second pretreatment tank outlet and a third pretreatment tank outlet which are sequentially arranged from top to bottom.
Furthermore, a pretreatment tank feeder for adding the composite carrier flocculant is arranged at the top of the pretreatment tank, and a pretreatment tank stirrer is arranged in the pretreatment tank.
Further, the pretreatment tank and the relay tank are both provided with two.
Compared with the prior art, the utility model discloses following effect has: the utility model relates to a rationally, can guarantee that the mud, the sewage through the processing reach the environmental protection index to recoverable fuel oil for the useless treatment cost of enterprise's saving danger, solve traditional processing technology's not enough, adopt sled dress module equipment to save the time cost and the financial cost of infrastructure construction simultaneously.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure:
1-a pretreatment tank; 101-pretreatment tank inlet; 102-a first pretreatment tank drain; 103-a second pretreatment tank drain outlet; 104-a third pretreatment tank drain; 105-a pretreatment tank agitator; 106-a slag discharge port of the pretreatment tank; 107-pretreatment tank feeder; 2-a drum centrifuge; 201-inlet of drum centrifuge; 202-bowl centrifuge drain; 203-slag discharge port of a rotary drum centrifuge; 3-relay slot; 301-first relay slot entrance; 302-a second relay slot entrance; 303-relay tank outlet; 304-relay trough drain; 4-a reaction tank; 401-reaction tank inlet; 402-reaction tank outlet; 403-reaction tank feeder; 404-first reaction tank stirrer; 405-a second reaction tank stirrer; 5-stacking the snails; 501-an inlet of a stack snail machine; 502-sludge discharge port of the screw stacking machine; 503-water outlet of the snail stacking machine; 504-oil drain port of screw stacking machine; 6-an inclined plate settling tank; 601-inclined plate settling tank inlet; 602-slag discharge port of inclined plate settling tank; 603-sloping plate settling tank drain outlet; 7-oil water separator; 701-oil water separator inlet; 702-oil water separator oil drain; 703-water outlet of oil-water separator; 8-a first conduit; 9-a second conduit; 10-a third conduit; 11-a fourth conduit; 12-a fifth pipeline; 13-a sixth conduit; 14-a seventh conduit; 15-an eighth conduit; 16-skid module.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The utility model relates to a three mud processing systems of oil refinery for with the processing technology of traditional oily sludge treatment "quenching and tempering-centrifugation", the centrifuge that takes place goes out mud and contains the liquid rate too high, and centrifugal water contains a large amount of organic matters, is the black, causes the impact to the production unit, and vicious circle's problem is solved. As shown in figure 1, the three-mud treatment system of the oil refinery comprises a pretreatment tank 1, a rotary drum centrifuge 2, a relay tank 3 and a skid-mounted module 16, wherein the skid-mounted module 16 comprises a reaction tank 4, a screw stacking machine 5, an inclined plate settling tank 6 and an oil-water separator 7.
In this embodiment, the pretreatment tank 1 is provided with a pretreatment tank inlet 101, a first pretreatment tank drain 102, a second pretreatment tank drain 103, a third pretreatment tank drain 104, a pretreatment tank agitator 105, a pretreatment tank slag discharge 106, and a pretreatment tank feeder 107; the inlet 101 of the pretreatment tank is used for inputting oily sludge; the first pretreatment tank water outlet 102, the second pretreatment tank water outlet 103 and the third pretreatment tank water outlet 104 are arranged in sequence from top to bottom; the pretreatment tank stirrer 105 is arranged inside the pretreatment tank 1 and is used for stirring the oily sludge; the pretreatment tank feeder 107 is located at the top of the pretreatment tank and is used for adding the number 1 composite carrier flocculant (dust) into the pretreatment tank.
In this embodiment, the bowl centrifuge 2 is provided with a bowl centrifuge inlet 201, a bowl centrifuge water outlet 202 and a bowl centrifuge slag outlet 203; the rotary drum centrifuge is used for carrying out solid-liquid separation, the separation slag is discharged through a slag discharge port of the rotary drum centrifuge, and the separation liquid is discharged through a water discharge port of the rotary drum centrifuge.
In this embodiment, the relay tank 3 is used for collecting a centrifuge separation liquid, the relay tank 3 is provided with a first relay tank inlet 301, a second relay tank inlet 302, a relay tank outlet 303, and a relay tank drain 304, and the first relay tank inlet and the second relay tank inlet are sequentially arranged from top to bottom.
In this embodiment, the reaction tank 4 is provided with a reaction tank inlet 401, a reaction tank outlet 402, a reaction tank feeder 403, a first reaction tank stirrer 404 and a second reaction tank stirrer 405, a first reaction chamber and a second reaction chamber which are communicated with each other are arranged in the reaction tank, the reaction tank inlet 401 and the reaction tank outlet 402 are respectively connected with the first reaction chamber and the second reaction chamber, the reaction tank feeder 403 is arranged at the top of the first reaction chamber and is used for adding a composite carrier flocculant, and the first reaction tank stirrer 404 is arranged in the first reaction chamber; a second reaction tank stirrer 405 is provided in the second reaction chamber.
In this embodiment, the screw stacking machine 5 is provided with a screw stacking machine inlet 501, a screw stacking machine sludge discharge port 502, a screw stacking machine water discharge port 503 and a screw stacking machine oil discharge port 504.
In this embodiment, the inclined plate settling tank 6 is provided with an inclined plate settling tank inlet 601, an inclined plate settling tank slag discharge port 602, and an inclined plate settling tank water discharge port 603.
In this embodiment, the oil-water separator 7 includes an oil-water separator inlet 701, an oil-water separator drain port 702, and an oil-water separator drain port 703.
The pipeline connection of the treatment system is as follows: the pretreatment tank slag discharge port 106 is connected with the inlet 201 of the rotary drum centrifuge through a first pipeline 8, the water discharge port 202 of the rotary drum centrifuge is connected with the inlet 301 of a first relay tank through a second pipeline 9, the outlet 303 of the relay tank is connected with the inlet 401 of the reaction tank through a third pipeline 10, the outlet 402 of the reaction tank is connected with the inlet 501 of the screw stacking machine through a fourth pipeline 11, the water discharge port 503 of the screw stacking machine is connected with the inlet 601 of the inclined plate sedimentation tank through a fifth pipeline 12, the slag discharge port 602 of the inclined plate sedimentation tank is connected with the inlet 302 of the second relay tank through a seventh pipeline 14, the oil discharge port 504 of the screw stacking machine is connected with the inlet 701 of the oil-water separator through a sixth pipeline 13, and the water discharge port 703 of the oil-water separator is connected with the inlet 302 of.
In this embodiment, the specific treatment process includes the following steps:
step S1: oily sludge enters a pretreatment tank 1 through a pretreatment tank inlet 101 to reach a specified liquid level, a pretreatment tank stirrer 105 is started, the rotation speed is adjusted to 240-; when the medicine dose reaches a specified value, closing the pre-treatment tank feeder 107, adjusting the rotating speed of the pre-treatment tank stirrer 105 to 80-100r/min, continuing to stir the oily sludge for 15-20min, closing the pre-treatment tank stirrer 105, standing for about 2-3h, realizing the separation of oil, water and mud, and discharging the once separated water;
step S2: the water separated from the pretreatment tank 1 is discharged to a sewage treatment plant through a first pretreatment tank water outlet 102, a second pretreatment tank water outlet 103 and a third pretreatment tank water outlet 104 which are different in height, and the rest materials enter the rotary drum centrifuge 2 through a pretreatment tank slag outlet 106, a first pipeline 8 and a rotary drum centrifuge inlet 201 to be subjected to solid-liquid separation;
step S3: in the rotary drum centrifuge 2, the separation slag is discharged through a rotary drum centrifuge slag discharge port 203, the separation liquid enters the relay tank 3 through a rotary drum centrifuge water discharge port 202, a second pipeline 9 and a first relay tank inlet 301 for buffer storage, the water separated by the relay tank 3 is discharged to a sewage treatment plant through a relay tank water discharge port 304, and the residual materials enter the reaction tank 4 through a relay tank outlet 303, a third pipeline 10 and a reaction tank inlet 401;
step S4: starting a first reaction tank stirrer 404 and regulating the rotating speed to 240-280r/min, starting a second reaction tank stirrer 402 and regulating the rotating speed to 80-100r/min, starting a reaction tank feeder 403 and adding a No. 2 composite carrier flocculant (powder), forming alum floc through demulsification and flocculation, and then enabling the materials to enter a screw lamination machine 5 through a reaction tank outlet 402, a fourth pipeline 11 and a screw lamination machine inlet 501 for solid-liquid separation;
step S5: in the screw stacking machine 5, separated slag is discharged through a screw stacking machine sludge discharge port 502, separated water enters the inclined plate settling tank 6 through a screw stacking machine water discharge port 503, a fifth pipeline 12 and an inclined plate settling tank inlet 601, qualified water separated by the inclined plate settling tank 6 is discharged to a sewage treatment plant through an inclined plate settling tank water discharge port 603 through the precipitation effect, and precipitated slag enters the relay tank 3 through an inclined plate settling tank slag discharge port 602, a seventh pipeline 14 and a second relay tank inlet 302 for circular treatment;
step S6: the separated oil of the screw overlapping machine 5 enters the oil-water separator 7 through the oil discharge port 504 of the screw overlapping machine, the sixth pipeline 13 and the oil-water separator inlet 701, the oil-water separator 7 is used for oil product purification, the purified oil is discharged and collected through the oil discharge port 702 of the oil-water separator, and the separated water enters the relay tank 3 for circulation treatment through the water discharge port 703 of the oil-water separator and is connected with the second relay tank inlet 302 through the eighth pipeline 15 and the seventh pipeline 14.
In the embodiment, 2 pretreatment tanks 1 and 2 relay tanks 3 can be respectively arranged in the production process for switching use, the volume is not less than 50% of daily throughput, the process flow can continuously run for 24 hours, and the process stability is ensured.
In this embodiment, the reaction tank 4, the screw stacking machine 5, the inclined plate settling tank 6 and the oil-water separator 7 included in the skid-mounted module 16 are skid-mounted modular integrated equipment. The water content of the sludge discharged from the slag discharge port 203 of the rotary drum centrifuge and the sludge discharge port 502 of the screw stacking machine is not higher than 75%. Wherein the indexes of the water discharged from the sewage treatment plant by the first pretreatment tank water discharge port 102, the second pretreatment tank water discharge port 103, the third pretreatment tank water discharge port 104, the inclined plate sedimentation tank water discharge port 603 and the relay tank water discharge port 304 are as follows: the pH value is 6-8, and the COD is not higher than 600 mg/L.
The utility model has the advantages that: (1) in the original 'tempering-centrifuging' process, a pretreatment tank is added at the front end of a rotary drum centrifuge, a novel composite carrier flocculant is added, three-phase separation of oil, water and mud can be realized after flocculation reaction and standing, and once separated water is discharged; (2) solid-liquid separation is carried out through a drum centrifuge, so that the water content index of the centrifugal mud can be ensured; (3) collecting the centrifugate through a relay tank, performing advanced treatment by adopting skid-mounted modular equipment to ensure drainage indexes, and recovering fuel oil; (4) the utility model discloses can reform transform on the basis of the original technology of oil refining enterprise, introduce sled dress modularization treatment facility, can carry out the three-phase separation of oil, water, mud, but recovery fuel oil guarantees that the mud, the sewage through handling reach the environmental protection index, for the enterprise practices thrift the cost and energy saving and emission reduction makes huge contribution.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. A three mud processing systems of oil refinery, its characterized in that: the device comprises a pretreatment tank, a rotary drum centrifuge, a relay tank and a skid-mounted module, wherein the pretreatment tank is provided with a pretreatment tank inlet, a pretreatment tank water outlet and a pretreatment tank slag outlet; the drum centrifuge is provided with a drum centrifuge inlet and a drum centrifuge water outlet; the relay slot is provided with a relay slot inlet and a relay slot outlet; the slag discharge port of the pretreatment tank is connected with the inlet of the rotary drum centrifuge through a first pipeline, the water discharge port of the rotary drum centrifuge is connected with the inlet of the relay tank through a second pipeline, and the outlet of the relay tank is connected with the input end of the skid-mounted module through a third pipeline.
2. The refinery three-mud treatment system of claim 1, wherein: the skid-mounted module comprises a reaction tank, a screw stacking machine, an inclined plate settling tank and an oil-water separator, wherein the reaction tank is provided with a reaction tank inlet and a reaction tank outlet; the screw stacking machine is provided with a screw stacking machine inlet, a screw stacking machine water outlet and a screw stacking machine oil outlet; the inclined plate settling tank is provided with an inclined plate settling tank inlet and an inclined plate settling tank slag discharge port; the oil-water separator is provided with an oil-water separator inlet and an oil-water separator water outlet; the inlet of the reaction tank is connected with the outlet of the relay tank through a third pipeline; the reaction tank outlet is connected with the inlet of the screw stacking machine through a fourth pipeline, the water outlet of the screw stacking machine is connected with the inlet of the inclined plate settling tank through a fifth pipeline, the slag discharge port of the inclined plate settling tank is connected with the inlet of the relay tank through a seventh pipeline, the oil discharge port of the screw stacking machine is connected with the inlet of the oil-water separator through a sixth pipeline, and the water outlet of the oil-water separator is connected with the inlet of the relay tank through an eighth pipeline and a seventh pipeline.
3. The refinery three-mud treatment system of claim 2, wherein: a first reaction chamber and a second reaction chamber which are communicated with each other are arranged in the reaction tank, a reaction tank feeder for adding the composite carrier flocculant is arranged at the top of the first reaction chamber, and a first reaction tank stirrer is arranged in the first reaction chamber; and a second reaction tank stirrer is arranged in the second reaction chamber.
4. The refinery three-mud treatment system of claim 2, wherein: the rotary drum centrifuge is also provided with a rotary drum centrifuge slag discharge port; the screw stacking machine is also provided with a mud outlet of the screw stacking machine; the inclined plate settling tank is also provided with an inclined plate settling tank water outlet; the oil-water separator is also provided with an oil discharge port of the oil-water separator.
5. The refinery three-mud treatment system of claim 2, wherein: the relay slot inlet comprises a first relay slot inlet and a second relay slot inlet which are sequentially arranged from top to bottom, and the first relay slot inlet is connected with the second pipeline; and the inlet of the second relay groove is connected with a seventh pipeline.
6. The refinery three-mud treatment system of claim 1, wherein: the pretreatment tank water outlet comprises a first pretreatment tank water outlet, a second pretreatment tank water outlet and a third pretreatment tank water outlet which are sequentially arranged from top to bottom.
7. The refinery three-mud treatment system of claim 1, wherein: the top of pretreatment tank is equipped with the pretreatment tank feeder that is used for adding composite carrier flocculating agent, is equipped with the pretreatment tank agitator in the pretreatment tank.
8. The refinery three-mud treatment system of claim 1, wherein: the pretreatment tank and the relay tank are both provided with two.
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| CN202021829029.8U CN212451147U (en) | 2020-08-28 | 2020-08-28 | Three mud processing systems of oil refinery |
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| CN202021829029.8U CN212451147U (en) | 2020-08-28 | 2020-08-28 | Three mud processing systems of oil refinery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908767A (en) * | 2020-08-28 | 2020-11-10 | 北京荣技环保节能科技有限公司 | Oil refinery three-sludge treatment system and treatment process thereof |
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2020
- 2020-08-28 CN CN202021829029.8U patent/CN212451147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908767A (en) * | 2020-08-28 | 2020-11-10 | 北京荣技环保节能科技有限公司 | Oil refinery three-sludge treatment system and treatment process thereof |
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Effective date of registration: 20221027 Address after: No. 600-1, Shenshui Road, Shenhe District, Shenyang, Liaoning 110065 Patentee after: Sun Haibin Address before: 100078 No.22, 4th floor, building 4, 89 yujiafen, Chengshou temple, Fengtai District, Beijing Patentee before: Beijing Rongji environmental protection and energy saving Technology Co.,Ltd. |
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