CN113845279A - Nanometer oil sludge hot washing system and process for plateau environment - Google Patents
Nanometer oil sludge hot washing system and process for plateau environment Download PDFInfo
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- CN113845279A CN113845279A CN202111132461.0A CN202111132461A CN113845279A CN 113845279 A CN113845279 A CN 113845279A CN 202111132461 A CN202111132461 A CN 202111132461A CN 113845279 A CN113845279 A CN 113845279A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F11/12—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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F11/12—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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a nanometer oil sludge hot washing system and process for plateau environment, relates to the technical field of oil-containing sludge treatment equipment, and solves the problem that the oil sludge hot washing system in the prior art is not suitable for the plateau environment, and the system comprises: the system comprises a screening machine, a conveyor, a crusher, a medicament tank, a metering pump, a heating furnace, a heat exchanger, a nanometer hot washing machine, a centrifugal machine, an oil-water separator, an oil storage tank, a filter press and a stacking yard; the nanometer hot washing machine is provided with an oil sludge pipeline, a medicament pipeline, a compressed gas pipeline, a high-temperature steam pipeline, a hot water pipeline, a floating oil pipeline and a fluidized pipeline; a hot flue gas channel is connected between the heat exchanger and the heating furnace; the liquid phase channel of the centrifuge is connected with the oil-water separator, and the solid phase channel is connected with the filter press; the sewage separated by the oil-water separator and the filter press enters a sewage treatment plant; the residue in the filter press enters a piling yard. The system shortens the process route, reduces the number of process equipment and pipelines, reduces the fault points in the plateau environment and reduces the maintenance frequency.
Description
Technical Field
The invention relates to the technical field of oily sludge treatment equipment, in particular to the technical field of a nanometer oil sludge hot washing system in a plateau environment.
Background
Oil sludge is an oily solid waste produced in the processes of oil extraction, transportation and refining. The oil sludge contains a large amount of odorous toxic substances such as benzene series, phenols, anthracene, pyrene and the like, pollutes air, underground water and soil, and causes damage to an ecosystem, wherein the damage is difficult to heal, and meanwhile, the deposition of the oil sludge can cause the frequency of shutdown, production halt, cleaning and dredging of oil extraction and oil refining equipment to be increased, so that the economic benefit of an enterprise is influenced. Oily sludge is listed in the national list of dangerous wastes, and enterprises are forcibly required to treat the oily sludge produced by the oily sludge by the nation. Therefore, the harmless, resource-based and reduction treatment of the oil sludge becomes a matter which the enterprises should do and need to do.
The traditional oil sludge hot washing device usually adopts multi-stage stirring washing and sedimentation processes, and has the advantages of long process flow, more equipment and pipelines, more sealing points, maintenance points, freezing plugging points and pressure boosting points, limited deoiling rate due to simple stirring, large ineffective consumption of medicaments, low sedimentation process speed, long time, large occupied area of multi-stage stirring equipment and sedimentation equipment, more corresponding matching and more heat loss points.
In certain oil field plateaus, the plateau environment of the oil field plateaus has adverse effects on an oil sludge treatment system, and higher requirements are provided for the reliability, the economy, the equipment failure rate, the maintenance frequency and the maintenance cost of the oil sludge treatment system, so that the traditional oil sludge hot washing system is limited in operation in the plateau environment, the oil sludge treatment effect is poor, and the treatment efficiency is low.
Disclosure of Invention
The invention aims to solve the problem that an oil sludge hot washing system in the prior art is not suitable for a plateau environment, and provides a nanometer oil sludge hot washing machine suitable for the plateau environment.
The invention specifically adopts the following technical scheme for realizing the purpose:
a nanometer oil sludge hot washing system for plateau environment comprises: the system comprises a screening machine, a conveyor, a crusher, a medicament tank, a metering pump, a heating furnace, a heat exchanger, a nanometer hot washing machine, a centrifugal machine, an oil-water separator, an oil storage tank, a filter press and a stacking yard;
the nano hot washing machine is provided with an oil sludge pipeline communicated with the conveyor, a medicament pipeline communicated with the medicament tank, a compressed gas pipeline communicated with the compressor, a high-temperature steam pipeline communicated with the heating furnace, a hot water pipeline communicated with the heat exchanger, a floating oil pipeline communicated with the oil-water separator and a fluidized material pipeline communicated with the centrifuge;
a hot flue gas channel is connected between the heat exchanger and the heating furnace; the liquid phase channel of the centrifuge is connected with an oil-water separator, and the solid phase channel is connected with a filter press; the sewage separated by the oil-water separator and the filter press enters a sewage treatment plant; the residue in the filter press enters a piling yard.
The system integrates the processes of fluidization, homogenization, soaking, oxidation and the like, shortens the process route, realizes stirring, fluidization, homogenization, washing and high-efficiency deoiling of oil sludge by using a nano hot washing machine, reduces the number of equipment, pipelines and valve bodies of a hot washing system, and reduces connection points, sealing points and heat loss points, thereby improving the reliability of the hot washing system.
Further, the heating furnace heats water into high-temperature steam at 75-85 ℃ by using fuel gas, and the high-temperature steam is conveyed into the nanometer hot washing machine to heat and fluidize the oil sludge.
Furthermore, the heat exchanger is used for recovering waste heat in hot flue gas generated by the heating furnace, and the hot flue gas is used for heating water entering the nanometer hot washing machine.
Further, a coaxial combined stirrer, a microporous aerator and a throttling port type nano bubble generator are connected in the nano hot washing machine; the coaxial combined stirrer is formed by combining a radial flow stirrer and an axial flow stirrer.
Wherein, the micropore aerator is arranged at the bottom of the nanometer hot washing machine and is used for generating a large amount of bubbles.
Wherein, the throttling opening type nanometer bubble generator generates a large amount of nanometer bubbles by adopting a dissolved air and gas release mode.
The radial flow stirrer is characterized by a shearing effect, and repeatedly shears and crushes micro-nano bubbles generated by the microporous aerator by utilizing high-speed rotation of the radial flow stirrer, so that the diameter of the bubbles is further reduced, and the proportion and the quantity of the nano-scale bubbles are increased; the axial flow stirrer is characterized by axial circulation, and the axial flow of fluid is promoted by utilizing higher axial force and circulation capacity of the axial flow stirrer, so that the mixing effect is improved.
The microporous aerator is positioned at the bottom of the nanometer hot washing machine and is used for generating a large amount of bubbles; the throttling-port type nano-bubble generator generates a large amount of nano-bubbles in a dissolved air and gas release mode. The nanometer hot washing machine adopts a shearing air method and a dissolved air release method to produce nanometer bubbles, so that the energy consumption is relatively low, the bubble generation rate is high, and secondary pollution is avoided. The nano bubbles have the characteristics of low rising speed, long retention time, high interface potential and capability of generating strong oxidizing free radicals, can obviously improve the medicament utilization rate, the medicament cleaning effect, the emulsion breaking effect, the destabilizing effect and the fluidizing effect, and improve the deoiling rate of the oil sludge. The oil sludge is subjected to hot washing treatment by a nano hot washing machine to generate floating oil and a fluidized substance.
Further, the centrifuge is used for performing solid-liquid separation on the fluidized oil sludge, and the solid phase enters a filter press for further dehydration to form waste residue.
Further, the oil-water separator performs oil-water separation on the floating oil generated by the nano hot washing machine and the liquid phase separated by the centrifugal machine, and recovers petroleum.
Furthermore, the system also comprises a temperature control system, and the temperature control system controls the flow of the fuel gas and the high-temperature steam according to the temperature at the outlet of the hot washing machine and the temperature at the inlet of the high-temperature steam.
In order to achieve the purpose, the application also provides a process of the nanometer oil sludge hot washing system for the plateau environment, which is characterized by comprising the following steps:
(1) screening out large oil sludge in the oil sludge through a screening machine, feeding the large oil sludge into a crusher for crushing treatment, and conveying qualified oil sludge into a nano hot washing machine through a conveyor;
(2) adding a medicament, compressed gas, high-temperature steam and hot water at 60 ℃ into a nano thermomotor, and carrying out hot washing treatment on the oil sludge entering the nano thermomotor;
(3) floating oil generated after the hot washing treatment enters an oil-water separator, and a fluidized substance enters a centrifugal machine;
(4) separating the floating oil entering the oil-water separator into oil and sewage, wherein the oil enters the oil storage tank, and the sewage enters a sewage treatment plant;
(5) the liquid phase of the fluidized material entering the centrifuge after centrifugal treatment enters another oil-water separator, the oil generated after separation of the oil-water separator enters an oil storage tank, and the sewage enters a sewage treatment plant; and (4) the solid phase enters a filter press, the residue treated by the filter press is placed in a stacking field, and the sewage is discharged into a sewage treatment plant.
The invention has the following beneficial effects:
(1) the nanometer oil sludge hot washing system disclosed by the invention adopts a nanometer oil sludge hot washing machine, integrates the homogenizing, fluidizing, washing, demulsifying, air floating and other processes of the traditional hot washing process, shortens the process route, cancels the traditional hot washing homogenizing tank, fluidizing tank, stirring tank and other process equipment, and the number of pipelines, valve bodies and pumps among equipment, systematically reduces the fault points in the plateau environment, and reduces the maintenance frequency;
(2) according to the invention, different hot washing systems are provided according to different liquid contents of the oil sludge, so that the effective utilization rate of equipment in the system is improved;
(3) the invention recovers the waste heat of the hot flue gas of the heating furnace, improves the utilization rate of the heat value of the fuel gas and improves the efficiency of the heating furnace;
(4) the invention has the advantages of high deoiling rate of the oil sludge, good treatment effect, relatively less medicament consumption, high medicament utilization rate and small side effect.
Drawings
FIG. 1 is a process flow diagram of a nano oil sludge hot washing system for treating oil sludge (dry materials) in a plateau environment according to the invention;
fig. 2 is a process flow diagram of a nano oil sludge hot washing system for treating oil sludge (wet material) in the plateau environment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment takes a dry oily sludge as a treatment target, and the specific implementation method is as follows:
the oil sludge (dry material) is firstly screened by a screening machine, and the oil sludge meeting the process requirements is conveyed into a nanometer hot washing machine by a conveyor. And (3) feeding the large oil sludge screened from the materials into a crusher for crushing, wherein the part with high oil content is used as a new material to enter a treatment process, and the rest stones with low oil content and the like are fed into a stacking field.
The gas heating furnace heats water to boiling to form high-temperature steam of 80 ℃. The 0.3-0.4MPa steam enters the nanometer hot washing machine through a pump and a pipeline and is used for heating materials. The hot flue gas generated by the gas heating furnace is subjected to waste heat recovery by a heat exchanger. The hot water (60 ℃) heated by the heat exchanger enters a nanometer hot washing machine through a pump and a pipeline and is used for fluidizing materials.
The nanometer hot washing machine utilizes a stirrer, an aeration device and a throttling opening type nanometer bubble generator to generate a large amount of micro-nanometer bubbles by a dissolved air release method and a shearing crushing method. The high-potential nano bubbles have better adsorption capacity. When the bubbles are broken, the energy is instantaneously released to carry out micro stirring on the materials, and a large amount of free radicals with strong oxidability are generated to decompose organic matters in the materials. The 'macro-stirring' of the stirrer and the 'micro-stirring' of the bubbles enable the materials and the medicament to be fully mixed and reacted, part of oil liquid is separated and floated to form a floating oil layer, and the floating oil layer enters the oil-water separator through a pipeline for dehydration treatment. The residual oil, water and mud form a fluid, and the fluid enters a centrifugal machine through a pipeline to be subjected to solid-liquid separation.
And the solid phase after solid-liquid separation is further dehydrated by a filter press to form residues, and the liquid phase is further recycled by an oil-water separator. The sewage generated by the system can be recycled after sewage treatment, and can also be used for other purposes.
The temperature control system controls the flow of fuel gas and high-temperature steam according to the temperature at the outlet of the nanometer hot washing machine and the temperature at the inlet of the high-temperature steam. The temperature of the outlet of the nanometer hot washing machine is ensured to be more than 50 ℃.
Example 2
As shown in fig. 2, the treatment object of this example is an oil-containing sludge (wet material, liquid content > 80%), which is different from example 1 in that: directly conveying oil sludge (wet material) to a nano hot washing machine through a conveying device; the heat exchanger recovers the waste heat in the hot flue gas, preheats water, improves the utilization rate of the heating furnace efficiency and the gas heat value, and reduces the production cost.
Claims (10)
1. A plateau environment is with nanometer fatlute hot washing system, its characterized in that, this system includes: the system comprises a screening machine, a conveyor, a crusher, a medicament tank, a metering pump, a heating furnace, a heat exchanger, a nanometer hot washing machine, a centrifugal machine, an oil-water separator, an oil storage tank, a filter press and a stacking yard;
the nano hot washing machine is provided with an oil sludge pipeline communicated with the conveyor, a medicament pipeline communicated with the medicament tank, a compressed gas pipeline communicated with the compressor, a high-temperature steam pipeline communicated with the heating furnace, a hot water pipeline communicated with the heat exchanger, a floating oil pipeline communicated with the oil-water separator and a fluidized material pipeline communicated with the centrifuge;
a hot flue gas channel is connected between the heat exchanger and the heating furnace; the liquid phase channel of the centrifuge is connected with an oil-water separator, and the solid phase channel is connected with a filter press; the sewage separated by the oil-water separator and the filter press enters a sewage treatment plant; the residue in the filter press enters a piling yard.
2. The system of claim 1, wherein the heating furnace heats water to 75-85 ℃ high-temperature steam by using fuel gas, and the high-temperature steam is conveyed into the nano hot washing machine to heat and fluidize the oil sludge.
3. The nanometer oil sludge hot washing system for the plateau environment as claimed in claim 1, wherein the heat exchanger is used for recovering waste heat in hot flue gas generated by the heating furnace, and the hot flue gas is used for heating water entering the nanometer hot washing machine.
4. The nanometer oil sludge hot washing system for the plateau environment as claimed in claim 1, wherein a coaxial combination stirrer, a microporous aerator, a throttling port type nanometer bubble generator are connected in the nanometer hot washing machine; the coaxial combined stirrer is formed by combining a radial flow stirrer and an axial flow stirrer.
5. The nano oil sludge hot washing system for the plateau environment as claimed in claim 4, wherein the micro-porous aerator is located at the bottom of the nano hot washing machine and is used for generating a large amount of bubbles.
6. The nanometer oil sludge hot washing system for the plateau environment as claimed in claim 4, wherein the throttling nanometer bubble generator generates a large amount of nanometer bubbles by means of dissolved air outgassing.
7. The system of claim 1, wherein the centrifuge is configured to separate solid from liquid of the fluidized oil sludge, and the solid phase is further dewatered in a filter press to form waste residue.
8. The nanometer oil sludge hot washing system for the plateau environment as claimed in claim 1, wherein the oil-water separator performs oil-water separation on the floating oil produced by the nanometer hot washing machine and the liquid phase separated by the centrifuge to recover the oil.
9. The nanometer oil sludge hot washing system for the plateau environment as claimed in claim 1, further comprising a temperature control system, wherein the temperature control system controls the flow of the fuel gas and the high temperature steam according to the temperature at the outlet of the hot washing machine and the temperature at the inlet of the high temperature steam.
10. The process of the nanometer oil sludge hot washing system for the plateau environment as claimed in any one of claims 1 to 9 is characterized by comprising the following steps:
(1) screening out large oil sludge in the oil sludge through a screening machine, feeding the large oil sludge into a crusher for crushing treatment, and conveying qualified oil sludge into a nano hot washing machine through a conveyor;
(2) adding a medicament, compressed gas, high-temperature steam and hot water at 60 ℃ into a nano thermomotor, and carrying out hot washing treatment on the oil sludge entering the nano thermomotor;
(3) floating oil generated after the hot washing treatment enters an oil-water separator, and a fluidized substance enters a centrifugal machine;
(4) separating the floating oil entering the oil-water separator into oil and sewage, wherein the oil enters the oil storage tank, and the sewage enters a sewage treatment plant;
(5) the liquid phase of the fluidized material entering the centrifuge after centrifugal treatment enters another oil-water separator, the oil generated after separation of the oil-water separator enters an oil storage tank, and the sewage enters a sewage treatment plant; and (4) the solid phase enters a filter press, the residue treated by the filter press is placed in a stacking field, and the sewage is discharged into a sewage treatment plant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111132461.0A CN113845279A (en) | 2021-09-26 | 2021-09-26 | Nanometer oil sludge hot washing system and process for plateau environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111132461.0A CN113845279A (en) | 2021-09-26 | 2021-09-26 | Nanometer oil sludge hot washing system and process for plateau environment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050051A (en) * | 2007-05-10 | 2007-10-10 | 辽河石油勘探局 | Hot chemical treatment method for oil sludge falling to the ground |
| CN105271626A (en) * | 2015-10-29 | 2016-01-27 | 中国石油天然气股份有限公司 | System and method for treating heavy oil and sludge in oil fields |
| CN110606633A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Oily sludge recycling and reducing treatment method and treatment system |
| CN210394107U (en) * | 2019-07-03 | 2020-04-24 | 浙江亿可利环保科技有限公司 | Oily sludge disposal system combining chemical washing and thermal desorption |
-
2021
- 2021-09-26 CN CN202111132461.0A patent/CN113845279A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050051A (en) * | 2007-05-10 | 2007-10-10 | 辽河石油勘探局 | Hot chemical treatment method for oil sludge falling to the ground |
| CN105271626A (en) * | 2015-10-29 | 2016-01-27 | 中国石油天然气股份有限公司 | System and method for treating heavy oil and sludge in oil fields |
| CN210394107U (en) * | 2019-07-03 | 2020-04-24 | 浙江亿可利环保科技有限公司 | Oily sludge disposal system combining chemical washing and thermal desorption |
| CN110606633A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Oily sludge recycling and reducing treatment method and treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 张明龙等: "《澳大利亚创新信息概述》", 企业管理出版社, pages: 113 * |
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