CN210710856U

CN210710856U - Demulsification system for oil-containing emulsion

Info

Publication number: CN210710856U
Application number: CN201920832158.3U
Authority: CN
Inventors: 郭映裕
Original assignee: Foshan Ruifeng Hengye Machinery Co ltd
Current assignee: Foshan Ruifeng Hengye Machinery Co ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-06-09
Anticipated expiration: 2029-06-03

Abstract

The utility model belongs to the technical field of chemical separation technique and environmental protection and energy saving equipment technique and specifically relates to oil-containing emulsion breakdown of emulsion system, including breakdown of emulsion jar and cement pit, the breakdown of emulsion jar by the drum of upper end and the reation kettle that the awl section of thick bamboo of tip constitutes down, the upper end of breakdown of emulsion jar connect sewage and get into pipeline, demulsifier entering pipeline, running water entering pipeline, oil discharge pipeline, the lower tip of breakdown of emulsion jar be equipped with row's sediment pipeline, breakdown of emulsion jar and cement pit between use middle section tube coupling, the middle section pipeline on have the breakdown of emulsion inner tube that stretches into the awl section of thick bamboo part of breakdown of emulsion jar lower extreme and stretch out the breakdown of emulsion outer tube component that the awl section of thick bamboo is. The utility model discloses a simple technique such as mix and stewing can successfully separate the emulsification situation complicacy, the oiliness height, contain the emulsification waste liquid of a large amount of block masses and foam, and its handling capacity is big, and the treatment effeciency is high, and operation maintenance low cost has higher economic benefits and is showing, is favorable to promoting the development of industry environmental protection.

Description

Demulsification system for oil-containing emulsion

Technical Field

The utility model belongs to the technical field of chemical industry separation technique and environmental protection and energy saving equipment technique and specifically relates to oil-containing emulsion breakdown of emulsion system.

Background

With the rapid development of economy in China, particularly the large-scale development and industrial accumulation of mechanical precision processing, such as automobile manufacturing, metallurgy, forging, electromechanical industry and other industries, the generation amount of waste emulsion is continuously increased, and the safety of soil and underground water is seriously threatened if the waste emulsion is not stored or treated properly. The waste emulsion is mainly used in the industries of machinery manufacturing, steel rolling and metal processing, and is used for cleaning, rust prevention, lubrication, cooling and the like, and the main components of the waste emulsion comprise base oil, an emulsifier, an additive and a small amount of water. After the emulsion is used for many times, the emulsion is invalid and needs to be replaced due to the entry of impurities such as metal chips, and the waste emulsion is putrefy when stored and has serious toxicity and pollution, so that the waste emulsion is listed in the national hazardous waste list in China, the category of the waste emulsion is HW-09, the collection and treatment of the waste emulsion are strictly controlled, and the hazardous waste treatment performance is characterized by low heat value, oil-in-water and water-in-oil phases in the hazardous waste, high five-day chemical oxygen consumption (85000-.

At present, the industrial requirement is to discharge the emulsion waste liquid after oil-water separation innocent treatment, the emulsion oil-water separation innocent treatment technology has various types, and the emulsion oil-water separation innocent treatment technology can be mainly divided into three types, namely a chemical method, a physical method and a microbiological method according to the classification of treatment methods. The most chemical treatment mode in each enterprise is mainly to add a certain proportion of demulsifier or acid liquor into emulsion to realize oil-water separation and then add alkali substances to neutralize, the conventional sulfuric acid demulsification process comprises the steps of acid adjustment, aeration, standing, separation, alkali addition and adjustment back, coagulation, precipitation and the like, the demulsification treatment time is long, the odor of waste gas generated by treatment is large, and the waste gas treatment is needed; the amount of chemicals required to be used in a matching way is large, and the amount of HW-17 of oily sludge produced by the process is large; the requirements of facility matching and actual operation are high, the chemical oxygen consumption of 5 days is still (10000-; the treatment cost is high, the safety operation and matching requirements of personnel are high and the like.

In the Chinese invention patent No. 201810022219.X, the method for deeply treating the high-concentration waste emulsion adopts the steps of regulation, demulsification, stirring and membrane separation and purification treatment, acid and mixed demulsifier are added in the method, and the retention time is short and natural separation is adopted, so the separation effect is poor, the oil content of sludge is high, and residues easily block a membrane channel to cause membrane damage or failure. The mixed demulsifier has high cost, increases the secondary disposal cost, and simultaneously, the separated waste oil does not reach the standard and can not be recycled. The invention discloses a pretreatment method of waste emulsion in Chinese patent No. 201710205207.6, which is mainly used for carrying out pretreatment, homogeneous separation, two-stage demulsification, pH value adjustment, Fenton oxidation and biochemical treatment on the machining oil-containing waste liquid. Therefore, a new process for treating and disposing high-concentration waste emulsion is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an one of the purpose lies in to prior art's defect and not enough, provides a simple structure, easy operation, makes and use cost is low, can reduce environmental pollution, furthest utilizes the oil emulsion breakdown of emulsion system of the separation characteristic of demulsifier.

This oil-containing emulsion breaking system, including breakdown of emulsion jar and cement pit, the breakdown of emulsion jar by the cylinder of upper end and the reation kettle of the awl section of thick bamboo constitution of tip down, the upper end of breakdown of emulsion jar connect sewage and get into pipeline, demulsifier entering pipeline, running water entering pipeline, oil discharge pipeline, the lower tip of breakdown of emulsion jar be equipped with the sediment pipeline, breakdown of emulsion jar and cement pit between use the middle section tube coupling, the middle section pipeline on have the breakdown of emulsion inner tube that stretches into the awl section of thick bamboo part of breakdown of emulsion jar lower extreme and stretch out the breakdown of emulsion outer tube that the awl section of thick bamboo is connected the cement pit and constitute, the breakdown of emulsion inner tube for transversely cutting into in the awl section of thick bamboo of breakdown of emulsion jar, wherein the water inlet port of breakdown of emulsion.

Preferably, the sewage inlet pipeline is sequentially provided with a sewage gate valve and a sewage pumping water inlet pump.

Preferably, a metering pump and a one-way valve which are connected with the demulsifier container are sequentially arranged on the demulsifier inlet pipeline.

Preferably, the tail end of the demulsifier inlet pipeline is communicated with the sewage inlet pipeline through a venturi tube, and the sewage inlet pipeline and the demulsifier inlet pipeline tangentially enter the demulsification tank through the same pipe orifice.

Preferably, a water outlet gate valve is arranged on a middle pipeline between the demulsification tank and the cement pond, the cement pond is connected with a cement water outlet pipeline, and the cement water outlet pipeline is sequentially provided with a cement gate valve and a water outlet pump.

Preferably, the tap water inlet pipeline is provided with a water inlet gate valve, and the slag discharge pipeline and the oil discharge pipeline are respectively provided with a sewage discharge gate valve

Preferably, the slag discharge pipeline is arranged at the top corner end of a conical cylinder of the demulsification tank, the tap water inlet pipeline extends out of the bottom of the tank body when entering the demulsification tank, the oil discharge pipeline is connected with a transversely arranged oil recovery pipe when entering the demulsification tank, and the oil recovery pipe is arranged below the inlets of the demulsifier inlet pipeline and the sewage inlet pipeline.

Preferably, the demulsification tank is internally provided with a pneumatic stirring pump for driving, the demulsification tank body is provided with a detachable baffle for maintenance, and the demulsification tank is internally provided with a magnetic turning plate liquid level meter.

The utility model has the advantages that: the demulsifying system of the oil-containing emulsion mixes the sewage and the demulsifier in a pipeline in advance according to a proportion, and enters a reaction kettle consisting of a cylinder and a cone in a tangential direction, the running water supplemented in the reaction kettle can assist the demulsifier to mix and stir with the oil-containing waste emulsion, the continuous supplementation of the running water and the demulsifier and the oil-containing waste emulsion entering in the tangential direction generate vortexes in the contact process, thereby realizing the oil-water separation in the stirring process, and the separated oil residue pipes are respectively and independently discharged out of the demulsifying tank, the reacted reclaimed water is discharged to a cement pool through a middle pipeline for next purification treatment, the whole process has simple operation and stable operation, and the emulsified waste liquid with complex emulsifying condition, high oil content, and a large amount of block masses and foams can be successfully separated only by simple mixing, standing and other processes, the treatment capacity is large, the treatment efficiency is high, and the operation maintenance cost is low, has higher economic benefit and is beneficial to promoting the development of industrial environmental protection.

Drawings

Fig. 1 is a schematic structural diagram of an emulsion breaking system for oil-containing emulsion according to an embodiment of the present invention;

fig. 2 is a schematic view of a front view structure of a demulsification tank according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a top view structure of the demulsification tank according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-3, the demulsification system for oil-containing emulsion in the embodiment of the present invention comprises a demulsification tank 1 and a cement pool 2, wherein the demulsification tank 1 comprises a reaction kettle consisting of a cylinder 11 at the upper end and a cone 12 at the lower end, the upper end of the demulsification tank 1 is connected with a sewage inlet pipeline 3, a demulsifier inlet pipeline 4, a tap water inlet pipeline 5 and an oil discharge pipeline 6, the sewage inlet pipeline 3 is sequentially provided with a sewage gate valve 31 and a water inlet pump 32 for pumping sewage, the sewage gate valve 31 is in a normally open state, the demulsifier inlet pipeline 4 is sequentially provided with a metering pump 41 and a check valve 42 for connecting a demulsifier container, the tap water inlet pipeline 5 is provided with a normally open water inlet gate valve 51, the residue discharge pipeline 7 and the oil discharge pipeline 6 are respectively provided with a normally closed gate valve 67, the demulsification device is characterized in that a slag discharge pipeline 7 is arranged at the lower end part of the demulsification tank 1, the demulsification tank 1 is connected with the cement pool 2 by using a middle section pipeline 8, the middle section pipeline 8 is provided with a demulsification inner pipe 81 extending into a conical cylinder 12 part at the lower end of the demulsification tank 1 and a demulsification outer pipe 82 extending out of the conical cylinder 12 and connected with the cement pool 2, the demulsification inner pipe 81 is transversely cut into the conical cylinder 12 of the demulsification tank 1, a water inlet port 810 of the demulsification inner pipe 81 is arranged in an oblique chamfer angle, the oblique chamfer angle of the water inlet port 810 can improve the fluidity of water, simultaneously can avoid the blockage caused by excessive dirt and effectively improve the stability of the continuous work of the system, a water outlet gate valve 83 in a normally open state is arranged on the middle section pipeline 8 between the demulsification tank 1 and the cement pool 2, a water outlet cement pipeline 9 is connected on the cement pool 2, and a cement gate valve 91 and a water outlet, the embodiment is to neutralize the waste emulsion of oil in the demulsification tank in the mixed reaction, demulsify and air-float separate the oil and water in the waste emulsion of oil, the oil layer floats on the water layer, then discharge oil from the upper part of the oil discharge pipeline, the lower part middle section pipeline discharges water, the bottom is arranged the sediment pipeline and is arranged sediment, realize oil-water separation, and then realize the preliminary treatment to the waste emulsion of oil, the oil of separation can be by way reuse such as fuel, realize the innoxious waste, the resource utilization, energy saving, the environmental protection, can bring obvious environmental economic benefits, further purification treatment is done to the water of separation, make it reach national industrial wastewater discharge standard.

In this embodiment, the demulsifier gets into the end of pipeline 4 and gets into pipeline 3 through-going connection through setting up venturi tube 43 and sewage, sewage get into pipeline 3 and demulsifier and get into the pipeline 4 and get into in the breakdown of emulsion jar through same mouth of pipe 34 tangential, mix before the demulsifier gets into the breakdown of emulsion jar prerequisite with oily waste emulsion, the tangential swirl that forms and water mixing today to guarantee that reaction time and stickness combine, improved the effect of breakdown of emulsion.

In this embodiment, the slag discharge pipeline 7 is installed at the top corner end of the conical cylinder 12 of the emulsion breaking tank 1, the tap water inlet pipeline 5 extends out of the bottom of the tank body when entering the emulsion breaking tank 1, the oil discharge pipeline 6 is connected with a horizontal oil collecting pipe 61 when entering the emulsion breaking tank 1, and the oil collecting pipe 61 is arranged below the inlets of the emulsion breaking inlet pipeline 4 and the sewage inlet pipeline 3.

In this embodiment, the demulsification tank 1 in be equipped with the drive of pneumatic agitator pump, the demulsification tank 1 jar body on be equipped with the baffle 13 dismantled of maintaining the use, demulsification tank 1 in be equipped with magnetism and turn over board level gauge 14.

Specifically, in the production process of the oil-containing emulsion breaking system, when the magnetic flap level gauge 14 detects that the water level reaches a high water level, water feeding and demulsifying agent adding are stopped, namely, the reaction and standing are started, tap water is automatically supplemented after the reaction is carried out for 30 minutes, the separated oil flocculent upper layer is discharged to be discharged from the oil discharge pipeline 6 for treatment or treated as dangerous waste, wherein the oil discharge amount is controlled by adding water, after the oil discharge is finished, the waste liquid after oil-water separation is discharged into the cement pool below, and conventional sewage treatment is carried out in the cement pool.

Through the technical scheme, the oil-containing emulsion demulsification system mixes sewage and demulsifier in the pipeline in advance according to a certain proportion, and enters a reaction kettle consisting of the cylinder 11 and the conical cylinder 12 in a tangential manner, tap water supplemented in the reaction kettle can assist the demulsifier and the oil-containing waste emulsion to mix and stir, the demulsifier continuously supplemented by the tap water and entering in the tangential manner, and the oil-containing waste emulsion generates vortex in the contact process, so that oil-water separation is realized in the stirring process, and the separated oil residue pipes are respectively and independently discharged from the demulsification tank, and the reacted reclaimed water is discharged to a cement tank through a middle pipeline to be purified and treated in the next step.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. The demulsification system of the oil-containing emulsion comprises a demulsification tank and a cement pool, wherein the demulsification tank comprises a cylinder at the upper end part and a reaction kettle consisting of a conical cylinder at the lower end part, the upper end part of the demulsification tank is connected with a sewage inlet pipeline, a demulsifier inlet pipeline, a tap water inlet pipeline and an oil discharge pipeline, and the lower end part of the demulsification tank is provided with a slag discharge pipeline and is characterized in that: the demulsification tank is connected with the cement pool through a middle-section pipeline, the middle-section pipeline is provided with a demulsification inner pipe extending into a conical cylinder part at the lower end of the demulsification tank and a demulsification outer pipe extending out of the conical cylinder and connected with the cement pool, the demulsification inner pipe is transversely cut into the conical cylinder of the demulsification tank, and a water inlet port of the demulsification inner pipe is arranged in an oblique chamfer angle.

2. The oil-containing emulsion breaking system of claim 1, wherein: the sewage inlet pipeline is sequentially provided with a sewage gate valve and a sewage pumping water inlet pump.

3. The oil-containing emulsion breaking system of claim 2, wherein: and a metering pump and a one-way valve which are connected with the demulsifier container are sequentially arranged on the demulsifier inlet pipeline.

4. The oil-containing emulsion breaking system of claim 3, wherein: the tail end of the demulsifier inlet pipeline is communicated with the sewage inlet pipeline through a venturi tube, and the sewage inlet pipeline and the demulsifier inlet pipeline tangentially enter the demulsification tank through the same pipe orifice.

5. The oil-containing emulsion breaking system of claim 4, wherein: and a water outlet gate valve is arranged on a middle section pipeline between the demulsification tank and the cement pond, the cement pond is connected with a cement water outlet pipeline, and the cement water outlet pipeline is sequentially provided with a cement gate valve and a water outlet pump.

6. The oil-containing emulsion breaking system of claim 5, wherein: the tap water inlet pipeline is provided with a water inlet gate valve, and the slag discharge pipeline and the oil discharge pipeline are respectively provided with a sewage discharge gate valve.

7. The oil-containing emulsion breaking system of claim 6, wherein: the device comprises a demulsifying tank, a tap water inlet pipeline, a tap water outlet pipeline, a slag discharging pipeline, a water outlet pipeline and a water outlet pipeline, wherein the slag discharging pipeline is arranged at the top corner end of a conical cylinder of the demulsifying tank, the tap water inlet pipeline extends out of the bottom of the tank body when entering the demulsifying tank, the oil outlet pipeline is connected with a transversely-arranged oil collecting pipe when entering.

8. The oil-containing emulsion breaking system of claim 7, wherein: the demulsification tank is internally provided with a pneumatic stirring pump for driving, a tank body of the demulsification tank is provided with a detachable baffle for maintenance, and the demulsification tank is internally provided with a magnetic turning plate liquid level meter.