CN214360908U

CN214360908U - Harmless recycling treatment device for oil sludge

Info

Publication number: CN214360908U
Application number: CN202022976944.6U
Authority: CN
Inventors: 李经伟; 周光辉; 张男; 刘杰; 郭尚旗; 安玉兰; 王俊瑶; 井岛; 张自友; 周振宏
Original assignee: Enman Technology Beijing Co ltd
Current assignee: Enman Technology Beijing Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-08
Anticipated expiration: 2030-12-07

Abstract

The application relates to the field of sludge treatment, in particular to a harmless recycling treatment device for oil sludge, which comprises a rotary jet extraction unit for extracting oil sludge water in an oil sludge pool, an ultrasonic air flotation unit for separating crude oil in the oil sludge water, a suspended sludge clarification unit for primarily separating sludge and water, and a centrifugal treatment unit for further separating the sludge and the water. The oil sludge treated by the device and the process reaches the harmless recycling standard.

Description

Harmless recycling treatment device for oil sludge

Technical Field

The application relates to the field of oil sludge treatment, in particular to an oil sludge harmless recycling treatment device.

Background

At present, the yield of the oil sludge is very large in China every year, and approximately accounts for about 4 percent of the total yield of crude oil. The total amount of crude oil consumed domestically from the exploitation of crude oil to the oil sludge generated in the whole process of smelting is about 5.5 hundred million tons, the oil sludge generated domestically is about 2200 million cubic meters every year, and the stock market of pollutants accumulated before is more on the scale of thousands of million cubic meters.

At present, the domestic common method for treating the oil sludge water in the dirty oil pool is a hot water alkaline washing method, which is a chemical cleaning method and uses high-strength alkaline liquor prepared from sodium hydroxide and sodium carbonate or trisodium phosphate to soften, loosen, emulsify and disperse precipitates.

In view of the above-mentioned related technologies, the inventors consider that the hot water alkaline cleaning method has high energy consumption, chemical agents are added, and secondary pollution is caused.

SUMMERY OF THE UTILITY MODEL

In order to treat the oil sludge more in an environment-friendly manner, the application provides a harmless recycling treatment device and process for the oil sludge.

In a first aspect, the application provides an oil sludge harmless recycling treatment device, which adopts the following technical scheme:

the utility model provides an oil sludge innocent treatment resourceful treatment device, includes the rotatory jet extraction unit that is used for extracting the interior oil sludge water of sump oil pond for the supersound air supporting unit of crude oil in the separation oil sludge water, the suspension mud clarification unit that is used for initial separation mud and water, and the centrifugal treatment unit that is used for further separation mud and water.

By adopting the technical scheme, the rotary jet extraction unit extracts the oil sludge water in the oil sump, then the oil sludge water is input into the ultrasonic air flotation unit, crude oil and muddy water are filtered out by the ultrasonic air flotation unit, the muddy water is subjected to primary separation of mud and water by the suspended sludge clarification unit, the mud enters the centrifugal treatment unit for final separation, and water and dry mud are separated; compared with a hot water alkali washing method, the whole treatment process greatly reduces chemical pollution, and the treated oil, mud and water reach the harmless recycling standard.

Optionally, the ultrasonic air flotation unit includes an ultrasonic air flotation tank, and a dissolved air pump for air flotation treatment, an ultrasonic device for separating mechanical impurities, and an oil scraper for extracting oil are disposed in the ultrasonic air flotation tank.

Through adopting above-mentioned technical scheme, dissolved air pump carries out the air supporting to the fatlute water in the supersound air supporting pond and handles, and the mechanical impurity of ultrasonic installation separation fatlute aquatic to original purity has been promoted, the frizing machine draws crude oil, thereby derives crude oil, and each functional partition of supersound air supporting unit is clear and definite, and mutually supports effectively to extract has comparatively pure volume crude oil.

Optionally, the ultrasonic air flotation tank is connected with a heat source input pipe, and hot steam or hot water is input into the heat source input pipe.

By adopting the technical scheme, hot steam or hot water is introduced into the ultrasonic air floatation tank, so that the environmental temperature is increased, and the reaction progress is accelerated.

Optionally, a demulsifier is added into the ultrasonic floatation tank.

By adopting the technical scheme, the emulsion is effectively destroyed by the demulsifier, and the oil-water separation efficiency is favorably improved.

Optionally, the rotary jet extraction unit comprises a self-priming pump for pumping oil and mud water, an outlet end of the self-priming pump is connected with an automatic flow divider, the automatic flow divider is connected with a rotary injector, and the rotary injector is located in a sump.

Through adopting above-mentioned technical scheme, the self priming pump provides the power of drawing sludge water, and sludge water is behind the self priming pump, and partly through automatic flow divider entering rotary injector, rotary injector blowout sludge water gets into stirring sump oil pond, the fatlute water in the homogenization sump oil to be favorable to follow-up device's processing.

Optionally, the suspended sludge clarification unit comprises a mixing tank, and the mixing tank is connected with the ultrasonic air flotation unit.

Through adopting above-mentioned technical scheme, the blending tank is used for supplying mud and separation of water, and mud sinks, and water come-up to be convenient for both discharge respectively.

Optionally, the suspended sludge clarification unit further comprises a mixer for mixing the sludge water and the coagulant, one end of the mixer is connected with the mixing tank, and the other end of the mixer is connected with the ultrasonic air flotation unit.

By adopting the technical scheme, the muddy water and the coagulant are mixed in the mixer, so that the coagulation and sinking rate of the muddy is accelerated, and the integral separation efficiency is improved.

Optionally, a water distributor is arranged in the mixing tank, and the mixer is communicated with the water distributor.

Through adopting above-mentioned technical scheme, the water-locator is favorable to the muddy water equipartition, is convenient for mud, separation of water to promote muddy water separation efficiency.

Optionally, the centrifugal processing unit comprises a centrifugal feed pump for pumping the muddy water, and an outlet end of the centrifugal feed pump is connected with a centrifuge.

Through adopting above-mentioned technical scheme, mud gets into centrifuge through centrifugal feed pump, and centrifuge further centrifugal treatment with mud to produce water and dry mud, make mud-water separation more thorough, water resource cyclic utilization.

In summary, the present application includes at least one of the following beneficial technical effects:

1. extracting oil sludge water in a sump by a rotary injection extraction unit, inputting the oil sludge water into an ultrasonic air flotation unit, filtering crude oil and muddy water by the ultrasonic air flotation unit, performing primary separation of mud and water by the muddy water through a suspended sludge clarification unit, and finally separating the mud in a centrifugal treatment unit to separate water and dry mud; compared with a hot water alkali washing method, the whole treatment process greatly reduces chemical pollution, and the treated oil, mud and water reach the harmless recycling standard;

2. the self-priming pump provides power for extracting sludge water, after the sludge water passes through the self-priming pump, a part of the sludge water enters the rotary ejector through the automatic flow divider valve, the sludge water sprayed by the rotary ejector enters the stirring sump oil pool, and the sludge water in the sump oil pool is homogenized, so that the treatment of a subsequent device is facilitated;

3. mud enters the centrifuge through the centrifugal feed pump, and the centrifuge further centrifugalizes the mud, so that water and dry mud are generated, mud-water separation is more thorough, and water resources are recycled.

Drawings

Fig. 1 is a schematic structural view of an apparatus for harmless recycling of sludge according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a connection structure between the ultrasonic device and the ultrasonic air flotation tank in fig. 1.

Fig. 3 is a cross-sectional view of the connector of fig. 2.

Fig. 4 is a cross-sectional view of the set screw of fig. 2.

Fig. 5 is a process flow block diagram of an apparatus for harmless recycling of oil sludge according to an embodiment of the present application.

Description of reference numerals: 1. a rotary jet extraction unit; 10. a self-priming pump; 11. an extractor; 12. rotating the ejector; 13. an automatic flow divider valve; 2. an ultrasonic air flotation unit; 20. an ultrasonic air flotation tank; 200. a first chamber; 201. a second chamber; 202. a third chamber; 21. a heat source input pipe; 22. a dissolved air pump; 23. an ultrasonic device; 230. mounting a plate; 231. a sleeve; 232. a support bar; 2320. an outer rod; 2321. an inner rod; 233. a fixed block; 234. a connecting member; 2340. a screw; 2341. a nut; 2342. a connecting rod; 2343. a connecting plate; 235. a set screw; 2350. a compression spring; 2351. a baffle plate; 24. an oil scraping machine; 240. an oil recovery tank; 3. a suspended sludge clarification unit; 30. a mixing tank; 31. a mixer; 32. a water distributor; 4. a centrifugal processing unit; 40. a centrifugal feed pump; 41. a centrifuge; 410. a water outlet; 411. a slag discharge port.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses harmless resourceful treatment device of fatlute. Referring to fig. 1, the harmless recycling treatment device for oil sludge comprises a rotary jet extraction unit 1 for extracting oil sludge water in a sump, an ultrasonic air flotation unit 2 for separating crude oil in the oil sludge water, a suspended sludge clarification unit 3 for primarily separating sludge and water, and a centrifugal treatment unit 4 for further separating the sludge and the water.

The rotary jet extraction unit 1 comprises a self-sucking pump 10 for pumping oil-sludge water in the sump, one end of the self-sucking pump 10 is connected with an extractor 11 placed in the sump, power is supplied by the self-sucking pump 10, and the extractor 11 extracts a mixture of oil, sludge and water from the sump; under the normal condition, oil, mud, water can produce the layering in the sump oil pond, in order to make the aquatic of follow-up processing, mud content is stable, handle in order to do benefit to the subsequent handling, avoid appearing the obstructed phenomenon of suction mud simultaneously, there are main pipe and shunt tubes in self priming pump 10 export intercommunication, be connected with the rotatory injector 12 that is located the sump oil pond in shunt tubes one end, still install automatic flow divider 13 on the shunt tubes, thereby control reposition of redundant personnel proportion, rotatory injector 12 is unpowered itself, utilize self priming pump 10 loop transfer fatlute water to rotatory injector 12, rotatory injector 12 receives the at the uniform velocity operation of fatlute water counter-acting force, the fatlute water of jet further stirs the oil in the sump oil pond, mud, water, thereby make the fatlute water homogenization.

An outlet main pipe of the self-priming pump 10 is connected to the ultrasonic air flotation unit 2; the ultrasonic air floatation unit 2 comprises an ultrasonic air floatation tank 20, wherein the ultrasonic air floatation tank 20 is divided into a first chamber 200, a second chamber 201 and a third chamber 202 by two vertically arranged partition plates, and the three chambers are communicated with each other; the oily sludge water is directly introduced into the first chamber 200, a demulsifier is added into the ultrasonic air floatation tank 20, and the demulsifier is used for promoting the crude oil to be separated from the water; a heat source input pipe 21 is introduced from the outside into the bottom of the ultrasonic air flotation tank 20, the heat source input pipe 21 extends from the first cavity 200 to the second cavity 201, and hot steam is introduced into the heat source input pipe 21, so that the oily sludge water in the ultrasonic air flotation tank 20 is heated, the water temperature is controlled to be 70-90 ℃, the oil-water separation efficiency is accelerated, and in other examples, hot water can be introduced into the heat source input pipe 21; the ultrasonic air flotation tank 20 is further provided with an air dissolving pump 22, one end of the air dissolving pump 22 is communicated with the third chamber 202, the other end of the air dissolving pump 22 is communicated with the first chamber 200, part of water in the third chamber 202 is mixed with air by the air dissolving pump 22 and then pumped into the first chamber 200, micro bubbles are generated to enable the oil in the water to float out, and the first chamber 200 is used for gathering the micro bubbles and acts on the oil-mud water in a centralized manner, so that the extraction effect is improved.

An ultrasonic device 23 is also suspended in the ultrasonic air flotation tank 20, the ultrasonic device 23 is specifically located in the second chamber 201, and the ultrasonic device 23 is used for separating mechanical impurities in the floating oil, so that the separated oil is purer.

Referring to fig. 2 and 3, a mounting plate 230 is fixed at the top of the inner side of the ultrasonic air flotation tank 20 through an expansion bolt, a sleeve 231 is vertically and fixedly connected at the center of the lower surface of the mounting plate 230, and the sleeve 231 is provided with internal threads; a supporting rod 232 used for connecting the ultrasonic device 23 is vertically arranged below the sleeve 231, a fixed block 233 is fixedly connected to the top end of the supporting rod 232, and a connecting piece 234 is detachably arranged between the fixed block 233 and the sleeve 231; the connecting piece 234 comprises a screw 2340, the screw 2340 is in threaded connection with the sleeve 231, a screw cap 2341 is coaxially and fixedly connected to the bottom end of the screw 2340, the section of the screw cap 2341 is in a regular hexagon shape, a connecting rod 2342 is coaxially and fixedly connected to the bottom surface of the screw cap 2341, the section of the connecting rod 2342 is in a circular shape, a connecting plate 2343 is coaxially and fixedly connected to the bottom end of the connecting rod 2342, the section of the connecting plate 2343 is in a circular shape, and the section diameter of the connecting plate 2343 is larger than that of the connecting rod 2342; correspondingly, the top end of the fixed block 233 is provided with a receiving groove for receiving the connecting rod 2342 and the connecting plate 2343, so that the connecting rod 2342 can rotate relative to the fixed block 233 and cannot be separated from the fixed block 233; when the support rod 232 is assembled or disassembled, an operator holds the support rod 232 and screws the nut 2341 with a wrench, so that the screw 2340 is fixed to the sleeve 231 or separated from the sleeve 231.

Referring to fig. 2 and 4, in order to change the submergence depth of the ultrasonic device 23 according to the liquid level height in the ultrasonic floatation tank 20, the connecting rod 234 is a telescopic rod, and comprises an outer rod 2320 and an inner rod 2321; the outer rod 2320 is fixedly connected with the fixed block 233, a cavity is formed in the outer rod 2320, the inner rod 2321 is connected in the cavity of the outer rod 2320 in a sliding manner, and the sections of the outer rod 2320 and the inner rod 2321 are rectangular; the bottom ends of two opposite side walls of the outer rod 2320 are respectively in threaded connection with a positioning screw 235, a plurality of positioning grooves are vertically and uniformly formed in the side wall of the inner rod 2321 corresponding to each positioning screw 235, and the positioning screws 235 are in threaded connection with the positioning grooves, so that the inner rod 2321 is limited to be separated from the outer rod 2320, and meanwhile, the submergence depth of the ultrasonic device 23 can be conveniently adjusted; in order to avoid that oil gas blocks the groove on the positioning screw 235 and influences an operator to screw the positioning screw 235, two compression springs 2350 are fixedly connected in the groove in the head of the positioning screw 235 side by side, a baffle 2351 for blocking the groove is fixedly connected to one end, far away from the bottom of the groove, of the two compression springs 2350, the compression springs 2350 elastically support the baffle 2351, so that the end face of the baffle 2351 is flush with the end face of the head of the positioning screw 235, only when the positioning screw 2345 is screwed, the screwdriver can push the baffle 2351 to the groove, and the compression springs 2350 elastically compress, so that the positioning screw 235 can be screwed.

Referring to fig. 1 again, an oil scraper 24 is further installed at the top inside the ultrasonic air-flotation tank 20, the oil scraper 24 includes a driving part and a conveyor belt part, the driving part is located above the liquid level, the conveyor belt extends to below the liquid level, the driving part drives the conveyor belt part to scrape crude oil circularly, so that the oil suspended on the upper layer is extracted and taken out continuously, and is transported to the outside of the ultrasonic air-flotation tank 20 through an oil pipeline, an oil recovery tank 240 is arranged outside the ultrasonic air-flotation tank 20, and the oil pipeline is communicated to the oil recovery tank 240; the mechanical impurity of the treated oil is less than 3 percent, the water content is less than 5 percent, and the treated oil enters the original system of the oil field or is used as fuel oil.

The deoiled muddy water in the third chamber 202 is pumped to the suspended sludge clarification unit 3 through a pipeline pump; the suspended sludge clarification unit 3 comprises a mixing tank 30, a mixer 31 and a water distributor 32; the mixer 31 is positioned outside the mixing tank 30, the water distributor 32 is positioned inside the mixing tank 30, and the mixer 31 penetrates through the mixing tank 30 and is communicated with the water distributor 32; the slurry pumped by the pipeline pump is added with coagulant and coagulant aid on the way, then the slurry, coagulant and coagulant aid are mixed in the mixer 31, the slurry mixed with the medicament enters the water distributor 32, the water is uniformly distributed in the mixing tank 30 through the water distributor 32, the sedimentation efficiency is improved, the sedimentated slurry is introduced into the centrifugal treatment unit 4 from the bottom of the mixing tank 30, and the clarified water is introduced into an oil field water system from the top of the mixing tank 30.

The centrifugal processing unit 4 comprises a centrifugal feeder pump 40 and a centrifuge 41 communicated with the centrifugal feeder pump 40, the centrifugal feeder pump 40 is communicated with the bottom of the mixing tank 30 and used for pumping mud into the centrifuge 41, a water outlet 410 and a slag outlet 411 are arranged on the centrifuge 41, the mud enters the centrifuge 41 for centrifugal separation, the separated dry mud is discharged through the slag outlet 411 and transported outside, the dry mud can also be used as a raw material for manufacturing ceramsite sand, and the separated water is discharged into an oil field water system through the water outlet 410.

The implementation principle of the harmless resource treatment device for oil sludge in the embodiment of the application is as follows: the sludge water in the sump is sucked by a self-sucking pump 10, and part of the pressurized sludge water drives a rotary ejector to do work through an automatic flow divider 13 so as to stir the sludge water in the sump and homogenize the sludge water in the sump; the other part of the pressurized oil sludge water enters an ultrasonic air floatation tank 20, a small amount of demulsifier is added, the oil in the oil sludge water is floated by air floatation treatment generated by an air dissolving pump 22, and then is treated by an ultrasonic device 23, mechanical impurities in the floating oil are separated to form a relatively pure oil, and the oil is scraped out by an oil scraper 24, hot steam is introduced through a heat source input pipe 21 in the whole treatment process, so that the water temperature is kept at 70-90 ℃, and the reaction process is accelerated; the muddy water treated by the ultrasonic air flotation unit 2 enters a suspended sludge clarification unit 3 through a pipeline pump, a coagulant and a coagulant aid are added simultaneously, the muddy water mixed with the medicament enters a mixing tank 30 through a water distributor 32, the muddy water reacts with the coagulant aid and the coagulant, the mud and the water are separated, the clarified water enters an oil field water system, the residual mud enters a centrifuge 41 through a centrifuge feeding pump 40 for centrifugal separation, the separated dry mud is transported outside, and the water returns to the oil field water system; in the whole treatment process, a small amount of chemical reagent and steam are added, the mechanical impurities of the treated oil are less than 3 percent, the water content is less than 5 percent, and the separated oil can enter an original system of an oil field or be used as fuel oil; the SS in the treated water is less than 50ppm, the oil content is less than 50ppm, and the treated water flows back to a water system; the oil content of the separated mud is less than 0.3 percent, the water content is less than 60 percent, and the mud can be directly transported outside; therefore, the oil sludge treated by the treatment device reaches the harmless recycling standard.

The embodiment of the application also discloses a harmless recycling treatment process of the oil sludge. Referring to fig. 5, the harmless recycling treatment process of the oil sludge comprises the following steps:

s1, pumping sludge water in the sump through an extractor 11 by a self-priming pump 10, pumping a part of sludge water to an ultrasonic air flotation unit 2, and returning the other part of sludge water to the sump after passing through an automatic flow divider 13 and a rotary ejector 12;

s2, enabling the oily sludge water to enter an ultrasonic air flotation tank 20 of the ultrasonic air flotation unit 2, adding a demulsifier, introducing hot steam or hot water through a heat source input pipe 21, separating mechanical impurities by an ultrasonic device 23, carrying out air flotation treatment by a dissolved air pump 22, enabling the separated oil to enter an oil recovery tank 240 through an oil scraper 24, and enabling muddy water to enter a suspended sludge clarification unit 3;

s3, adding a coagulant aid and a coagulant into a mixer 31 in the suspended sludge clarification unit 3, enabling muddy water of the mixed medicament to enter a mixing tank 30 through a water distributor 32, separating mud and water, enabling the mud to enter a centrifugal treatment unit 4, and enabling the water to enter an oil field water system;

s4, pumping the mud into a centrifuge 41 through a centrifugal feeding pump 40 in the centrifugal processing unit 4, feeding the water separated by the centrifuge 41 into an oil field water system, and discharging the dry mud separated by the centrifuge 41.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an oil sludge innocent treatment resourceful treatment device which characterized in that: comprises a rotary jet extraction unit (1) for extracting oil sludge water in a dirty oil pool, an ultrasonic air flotation unit (2) for separating crude oil in the oil sludge water, a suspended sludge clarification unit (3) for primarily separating sludge and water, and a centrifugal treatment unit (4) for further separating the sludge and the water; rotatory injection extraction unit (1) is including self priming pump (10) that is used for pumping oil muddy water, self priming pump (10) exit end is connected with automatic flow divider (13), automatic flow divider (13) are connected with rotatory sprayer (12), rotatory sprayer (12) are located the sump oil.

2. The apparatus according to claim 1, wherein: the ultrasonic air flotation unit (2) comprises an ultrasonic air flotation tank (20), wherein a dissolved air pump (22) for air flotation treatment, an ultrasonic device (23) for separating mechanical impurities and an oil scraper (24) for extracting oil are arranged in the ultrasonic air flotation tank (20).

3. The harmless resource treatment device of oil sludge according to claim 2, characterized in that: the ultrasonic air flotation tank (20) is connected with a heat source input pipe (21), and hot steam or hot water is input into the heat source input pipe (21).

4. The harmless resource treatment device of oil sludge according to claim 2, characterized in that: and a demulsifier is added into the ultrasonic air floatation tank (20).

5. The apparatus according to claim 1, wherein: the suspended sludge clarification unit (3) comprises a mixing tank (30), and the mixing tank (30) is connected with the ultrasonic air flotation unit (2).

6. The harmless resource treatment device of oil sludge according to claim 5, characterized in that: the suspended sludge clarification unit (3) further comprises a mixer (31) for mixing the sludge water and the coagulant, one end of the mixer (31) is connected with the mixing tank (30), and the other end of the mixer is connected with the ultrasonic air flotation unit (2).

7. The harmless resource treatment device of oil sludge according to claim 6, characterized in that: a water distributor (32) is arranged in the mixing tank (30), and the mixer (31) is communicated with the water distributor (32).

8. The apparatus according to claim 1, wherein: the centrifugal processing unit (4) comprises a centrifugal feeding pump (40) for pumping muddy water, and the outlet end of the centrifugal feeding pump (40) is connected with a centrifugal machine (41).