CN117618986A - Oil-water separator for SCR4500 continuous casting and rolling production line and production system thereof - Google Patents

Abstract

The application discloses SCR4500 continuous casting tandem rolling oil water separator for production line and production system thereof, include: the device comprises a sedimentation mist capturing component, a primary oil-water separation filter screen, a secondary separation air outlet pipe, a secondary air inlet filter screen, a vacuum fan, a booster pipe and a vacuum filter; the vacuum filter comprises: a vacuum chamber, a positive pressure cavity and drain pipe filter cloth; the vacuum filter is internally provided with a vacuum chamber and a positive pressure cavity which are communicated with each other; a drain pipe filter cloth is arranged on the connecting section of the vacuum chamber and the positive pressure cavity; an air inlet of the vacuum fan is communicated with the vacuum chamber through an air inlet pipe; the air outlet of the vacuum fan is communicated with the positive pressure cavity pipeline. Through oil water separator's input use, promoted vacuum filter's filter effect, stability in use promotes emulsion quality, has solved wire pole surface and has mingled with defect, the high problem of oxidation powder, has improved product quality.

Description

Oil-water separator for SCR4500 continuous casting and rolling production line and production system thereof

Technical Field

The application relates to the technical field of continuous casting, in particular to an oil-water separator for an SCR4500 continuous casting and rolling production line and a production system thereof.

Background

In the process of producing copper and copper alloy wire rods, the SCR4500 continuous casting and rolling production line needs to use emulsion to wash and clean the surface of a casting blank, remove a primary scaly oxide layer and a secondary powdery oxide layer on the surface, and form an emulsion steam environment at the same time so as to isolate air on the surface of a copper material, reduce the oxidation degree of the casting blank and reduce the oxide layer on the surface of the wire rod to a certain extent, and the process can be followed by cooling a rolling mill and a roller. The quality of the emulsion in this process is therefore directly decisive for the final quality of the copper product.

In the whole production process, the emulsion is recycled, and in order to ensure the quality of the recycled emulsion, a vacuum filter is usually used for filtering a large amount of metal oxide powder particles in the emulsion so as to avoid a large amount of foam generated by the emulsion. In the existing treatment process, the recycled emulsion still can generate a foam layer of 600mm at most.

An emulsion filter and copper rod continuous casting and rolling production system for emulsion filtering equipment such as disclosed in CN201721714704.0, which reduces the adsorption quantity of filter cloth to emulsion by wetting filter cloth and reduces emulsion loss, and the system does not adopt a vacuum filter, and can not solve the problem of overhigh foam layer in the vacuum filter.

The vacuum filter needs to be vacuumized, and due to the existence of the foam layer, the machine can suck emulsion and foam mixture into the fan during vacuumization, so that the vacuum degree of the vacuum filter is low and can only reach the vacuum degree of 0.0333 standard atmospheric pressure. And when the emulsion is filtered, the pressure required for the emulsion to pass through the filter cloth is 3-5% of the atmospheric pressure. The too low vacuum degree leads to poor emulsion filtering effect, so that a large amount of oxidized powder is rolled along with the emulsion again to cause product defects such as product surface defects, poor flaw detection data, exceeding of surface oxide layer thickness and the like. Meanwhile, the vacuum degree is low, the required treatment capacity is large, the frequent overload jump stop of the vacuum filter can be caused, the equipment failure rate is high, the operation efficiency is poor, the vacuum fan can be burnt out when serious, in addition, the filter cloth replacement frequency can be increased due to poor filtering effect, and the production cost is increased.

At present, an oil-water separator is not used on the mainstream SCR production line to improve the filtering effect and the running stability of the vacuum filter, and meanwhile, the oil-water separator on the market also does not meet the use requirement of the vacuum filter on the SCR4500 production line.

At present, oil-water separators in the market mainly have two types according to different principles, one type is that oil-water-gas three-phase separation is realized through filtering of a filter element, and the other type is that oil-water separation is realized through oil-water-gas density difference, and the density difference type oil-water separator comprises: centrifugal, impact, etc.

The cartridge filter type oil-water separator cannot be used for the treatment of such emulsions: because the emulsion contains a large amount of copper oxide powder, the particle diameter of the copper oxide powder with higher content is mainly below 0.2mm and below 5 mu m, and the emulsified oil in the emulsion is uniformly mixed with the copper oxide powder and water, if a filtering type oil-water separator is used, the filter core has smaller pores, the blockage can occur when the treatment time is shorter, the use and maintenance cost is higher, and meanwhile, the continuous production requirement cannot be met.

The density difference type oil-water separator cannot be used in a vacuum filter matched with an SCR4500 production line no matter in a centrifugal type or impact type: because the density difference type oil-water separator requires that the medium enters the oil-water separator from the liquid inlet, namely with pressure, so as to provide separation power such as impact, centrifugal force and the like, the oil-water-gas three-phase separation is realized, and the density difference type oil-water separator is mainly used for a discharge end rather than a suction end. The SCR4500 vacuum filter is to draw vacuum and press air into a fan by using atmospheric pressure, and in general, the vacuum pressure provided by the vacuum filter is only about 10% of the atmospheric pressure and is more than or equal to 0.01Mpa and is far less than the air inlet pressure requirement of about 0.2Mpa minimum of a common oil-water separator, so that the conventional oil-water separator does not meet the use requirement of an emulsion vacuum filter.

Meanwhile, the circulating emulsion is used for a long time, the breeding of various microorganisms such as bacteria is not avoided, and a bactericide is required to be added periodically for sterilization treatment so as to prolong the service time of the circulating emulsion. Various microorganisms are mainly attached to the surface of the copper oxide powder, the existing treatment device cannot effectively filter the copper oxide powder, the addition amount of the bactericide in the emulsion is increased, and the production cost is increased.

The circulating emulsion used in the existing SCR4500 continuous casting and rolling production line cannot be effectively filtered, oil, water and gas cannot be separated after filtration, more copper oxide powder particles remain in the circulating emulsion, and various defects on the surface of copper materials produced by continuous casting and rolling are serious due to the fact that the circulating emulsion is used circularly, and the quality of the produced copper materials is affected.

The information disclosed in the background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The application provides an SCR4500 continuous casting tandem rolling oil water separator for production line and production system thereof to the technical problem, and the oxide content of the surface of the wire rod behind the oil water separator is reduced from 7.86mg to 4.04mg, and the copper powder content is reduced by 48.6%, so that the product quality is obviously improved.

The application provides an SCR4500 continuous casting tandem rolling oil water separator for production line and production system thereof, include: the device comprises a sedimentation mist capturing component, a primary oil-water separation filter screen, a secondary separation air outlet pipe, a secondary air inlet filter screen, a vacuum fan, a booster pipe and a vacuum filter;

the vacuum filter comprises: the vacuum chamber, the positive pressure cavity and the drain pipe filter cloth; the vacuum filter is internally provided with a vacuum chamber and a positive pressure cavity which are communicated with each other; a drain pipe filter cloth is arranged on the connecting section of the vacuum chamber and the positive pressure cavity; an air inlet of the vacuum fan is communicated with the vacuum chamber through an air inlet pipe; the air outlet of the vacuum fan is communicated with the positive pressure cavity pipeline;

the first-stage oil-water separation filter screen is accommodated and arranged at one end of the first pipe section, and the other end of the first pipe section is communicated with the air inlet pipe; the secondary air inlet filter screen is accommodated and arranged at one end of the secondary separation air inlet pipe, and one end of the secondary separation air inlet pipe is also communicated with the side wall of the lower part of the sedimentation mist catching component; the other end of the secondary separation air inlet pipe is communicated with the air inlet pipe outside the first pipe section; the extending end of the air inlet pipe is communicated with the secondary separation air outlet pipe; the extending end of the secondary separation air outlet pipe is communicated with the top of the sedimentation mist catching component;

the sedimentation mist-catching component comprises: the cylinder body and the multistage mist catcher and the multistage sedimentation chamber are arranged in the cylinder body in an accommodating manner; the multi-stage mist catcher divides the cylinder into a multi-stage sedimentation chamber;

the gas emulsion mixture is pumped by a vacuum fan, emulsion liquid drops with the particle size being more than 2mm are filtered by a primary oil-water separation filter screen, then enter a secondary separation air outlet pipe, emulsion liquid drops with the particle size being more than 1mm are filtered by a secondary air inlet filter screen, part of gas enters a sedimentation mist-catching component for gas-liquid separation, and the gas enters the vacuum fan from the top of the sedimentation mist-catching component;

a positive pressure of 1.1 times or more of atmospheric pressure is formed in the positive pressure chamber, and a negative pressure of 12% or more of atmospheric pressure is formed in the vacuum chamber.

Preferably, it comprises: an air inlet resistance tube, a primary atomizer; the secondary separation air inlet pipe is accommodated and provided with an air outlet on the side wall of one end of the secondary air inlet filter screen and is communicated with one end of the air inlet resistance pipe; the other end of the air inlet resistance pipe extends into a primary sedimentation chamber arranged in the lower part of the sedimentation mist catching component, and a primary atomizer is arranged in the extending end.

Preferably, the sedimentation mist-catching assembly comprises a housing arranged in the cartridge: fine atomization plate, coarse atomization plate, secondary mist catcher, and tertiary mist catcher; the fine atomization plate, the coarse atomization plate, the secondary mist catcher and the tertiary mist catcher are arranged in the cylinder body at intervals;

the fine atomization plate and the coarse atomization plate are overlapped and divide the inner cavity of the lower part of the cylinder into a secondary sedimentation chamber and a primary sedimentation chamber;

the three-stage mist catcher divides the inner cavity of the upper part of the cylinder body into an exhaust chamber and a three-time sedimentation chamber; the secondary mist catcher is arranged on the interface of the tertiary sedimentation chamber and the tertiary sedimentation chamber.

Preferably, it comprises: a secondary separation blow-down hole and a primary separation blow-down port; the bottom surface of the first pipe section is provided with a secondary separation sewage draining hole; the bottom of the secondary separation air inlet pipe is provided with a primary separation sewage outlet.

Preferably, it comprises: a water storage chamber; the water storage chamber is arranged on the bottom surface of the cylinder body and is communicated with the cylinder body.

Preferably, it comprises: a liquid level sensor, a manual drain pipe and an automatic drain; the manual drain pipe and the automatic drain pipe are arranged on the water storage chamber at intervals; the liquid level sensor is arranged in the water storage chamber and is electrically connected with the automatic drainer.

Preferably, it comprises: primary settling chamber door, secondary settling chamber door, tertiary settling chamber door, and exhaust chamber door; the primary sedimentation chamber door is arranged on the side wall of the primary sedimentation chamber; the secondary sedimentation chamber door is arranged on the side wall of the secondary sedimentation chamber; the third sedimentation chamber door is arranged on the side wall of the third sedimentation chamber; the exhaust chamber door is arranged on the side wall of the exhaust chamber.

Preferably, it comprises: an air inlet door; the air inlet door is arranged on an air inlet pipe of the vacuum fan.

Another aspect of the present application also provides a production system comprising: a plurality of rolling mills, emulsion liquid collecting frames, emulsion spraying components and oil-water separators which are connected in series;

the emulsion liquid collecting rack is arranged at one side of a plurality of rolling mills connected in series and used for collecting circulating emulsion;

the emulsion spraying assembly is arranged at the emulsion spraying side of the plurality of tandem rolling mills;

the emulsion liquid collecting frame is communicated with a pipeline of a feed inlet of the vacuum filter;

the liquid outlet of the vacuum chamber of the vacuum filter is communicated with the emulsion spraying assembly pipeline;

the emulsion gas mixture in the vacuum chamber is pumped out by the vacuum fan and is introduced into the oil-water separator to separate emulsion and gas;

the air outlet of the vacuum fan is communicated with the vacuum filter through a pressurizing pipe, the air separated from emulsion and copper oxide powder is discharged into the vacuum filter, the air is pressurized in the positive pressure cavity 25, positive pressure which is more than or equal to 1.1 times of atmospheric pressure is formed in the positive pressure cavity 25, and meanwhile, 12% negative pressure of atmospheric pressure is formed in the vacuum cavity 22.

Preferably, the plurality of rolling mills connected in series includes: a 16 inch rolling mill, a 12 inch horizontal rolling mill, a 12 inch vertical rolling mill and an 8 inch rolling mill which are arranged in series; passing the casting blank through an inch rolling mill, a 12 inch horizontal rolling mill, a 12 inch vertical rolling mill and an 8 inch rolling mill in sequence;

preferably, it comprises: an automatic drainage emulsion pump and an emulsion supply pipe; one end of the emulsion supply pipe is communicated with the emulsion spraying component, and the other end is communicated with the vacuum chamber; the automatic drainage emulsion pump is arranged on the emulsion liquid supply pipe.

The beneficial effects that this application can produce include:

1) The oil-water separator for the SCR4500 continuous casting and rolling production line and the production system thereof provided by the application promote the filtering effect of the vacuum filter through the use of the oil-water separator,

the use stability is improved, so that the emulsion quality is improved, the problems of inclusion defects on the surface of a wire rod and high oxidized powder content are solved, and the product quality is improved. Secondly, the problems of frequent overload skip and burnout of the vacuum filter of the SCR4500 continuous casting and rolling production line are solved. Thirdly, the use efficiency of the filter cloth is improved, the use quantity of the filter cloth is reduced, and the production cost is reduced.

2) The application provides an SCR4500 continuous casting tandem rolling oil water separator for production line and production system thereof, after adopting this oil water separator, can effectively improve vacuum filter's filter effect and stability in use, promote the emulsion quality after filtering, find through sampling detection, after adopting this oil water separator, the cupric oxide powder content in the circulation emulsion is from about 20% when never using to 1.36%, the problem that the wire pole surface that obtains of SCR4500 continuous casting tandem rolling production line is mingled with the oxide skin defect, the high oxide powder has been effectively solved, after adopting this oil water separator wire pole surface oxide content falls to 4.04mg from 7.86mg, the copper powder content falls 48.6%, product quality has been obviously improved.

3) The application provides an oil-water separator for SCR4500 continuous casting tandem rolling production line and production system thereof, this oil-water separator is arranged in the SCR4500 continuous casting tandem rolling production line, does not need to improve the filter effect, has still improved filter cloth availability factor, reduces the filter cloth quantity about 40.6%, increases simultaneously along with oxidizing powder breaks away from the bacterial total amount of emulsion, effectively suppresses the bacterial reproduction in the circulation emulsion, under the germicide of the same dose, emulsion index maintenance time is longer, reduces the effective reduction in production cost of germicide quantity.

4) The application provides an oil-water separator for SCR4500 continuous casting and rolling production line and a production system thereof, which solves the problem that a vacuum filter of the SCR4500 continuous casting and rolling production line is frequently overloaded and jumped to stop and burnt out through the input use of the oil-water separator. The wear rate of the spray head of the rolling mill and the emulsion sprayer is obviously reduced through the use of the oil-water separator, and the service life is prolonged. The oil-water separator has the characteristics of reliable work, convenient operation, difficult blockage and longer cleaning period.

Drawings

Fig. 1 is a schematic diagram of an oil-water separator for an SCR4500 continuous casting and rolling production line provided in the present application;

fig. 2 is a schematic diagram of a front view structure of a continuous casting and rolling production line provided by the application;

legend description:

casting blank 1, 16 inch rolling mill 2, 12 inch horizontal rolling mill 3, 12 inch vertical rolling mill 4, emulsion liquid supply pipe 5, 8 inch rolling mill (8) 6, emulsion liquid collecting frame 7, booster pipe 8, vacuum blower 9, blower air inlet damper 10, three-stage mist catcher 11, secondary mist catcher 12, fine atomization plate 13, coarse atomization plate 14, manual drain pipe 15, primary atomizer 16, secondary air inlet filter screen 17, automatic drainer 18, secondary separation air inlet pipe 19, primary oil-water separation filter screen 20, first pipe section, filter plate 21, vacuum chamber 22, automatic drainage emulsion pump 23, drain filter cloth 24, positive pressure cavity 25, vacuum filter 26, secondary separation air outlet pipe 27, vacuum filter,

The air exhaust chamber 28, the air exhaust chamber door 29, the third sedimentation chamber door 30, the third sedimentation chamber 31, the second sedimentation chamber door 32, the second sedimentation chamber 33, the first sedimentation chamber 34, the first sedimentation chamber door 35, the water storage chamber 36, the air inlet resistance pipe 37, the second separation blow-off hole 38, the first separation blow-off port 39 and the first oil-water separation pipe 40.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the 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 invention, as 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, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

Technical means which are not described in detail in the application and are not used for solving the technical problems of the application are all arranged according to common general knowledge in the field, and various common general knowledge arrangement modes can be realized.

Referring to fig. 1-2, the oil-water separator for SCR4500 continuous casting and rolling production line provided herein acts on vacuum filter 26, vacuum filter 26 processes emulsion collected by emulsion collecting rack 7, and emulsion collecting rack 7 is disposed below a plurality of continuous rolling mills of SCR4500 continuous casting and rolling production line for recycling circulating emulsion.

The primary oil-water separator 40 is connected to the side wall of the vacuum chamber 22 of the emulsion filter 26, and a filter plate 21 is arranged on the interface between the vacuum chamber 22 and the primary oil-water separator 40. The vacuum chamber 22 is filled with a recycling emulsion, namely an air-emulsion mixture (emulsified oil, alcohol, medicament and deionized water suspension mixture, the same applies below), and after the recycling emulsion passes through the filter plate 21, the filter plate 21 intercepts various solid impurities such as large-particle oxide skin with the size of more than 3mm and the like contained in the recycling emulsion, and prevents the impurities from entering an oil-water separator.

The vacuum chamber 22 of the vacuum filter 26 is communicated with the primary oil-water separation pipe 40; the primary oil-water separation pipe 40 is communicated with an air inlet pipe of the vacuum fan 9 through a first pipe section pipeline; a first-stage oil-water separation filter screen 20 is accommodated in the lower part of the first pipe section; a primary separation drain 39 is provided on the bottom surface of the first pipe section. The extending end of the air inlet pipe of the air blower 9 is communicated with the secondary separation air outlet pipe 27; the pipeline between the first pipe section and the secondary separation air outlet pipe 27 is communicated with one end of the secondary separation air inlet pipe 19. The bottom of the other end of the secondary separation air inlet pipe 19 is internally provided with a secondary air inlet filter screen 17, and the bottom surface of the secondary separation air inlet pipe 19 is provided with a secondary separation sewage discharging hole 38 for periodically opening and cleaning the secondary air inlet filter screen 17.

An outlet is formed in the side wall of the secondary air inlet filter screen 17 at the lower part of the secondary separation air inlet pipe 19 and is communicated with one end of an air inlet resistance pipe 37; the air inlet resistance pipe 37 is accommodated and arranged at the lower part of the primary sedimentation chamber 34, and the other end of the air inlet resistance pipe 37 is arranged towards the water storage chamber 36 arranged at the bottom of the primary sedimentation chamber 34; while the other end of the air intake resistance tube 37 accommodates the primary atomizer 16.

In one embodiment, a manual drain pipe 15 is arranged at one side of the secondary separation drain hole 38; the other side of the secondary separation drain hole 38 is provided with an automatic drain 18 for periodic draining.

The other end of the secondary separation air outlet pipe 27 is communicated with the top of the sedimentation mist-catching component; the sedimentation mist-catching component comprises: the cylinder body and the multistage mist catcher are accommodated in the cylinder body; the inner cavity of the cylinder is divided into a plurality of chambers by the mist catcher at each stage so as to realize separation and recovery of emulsion contained in the gas. The bottom surface of the sedimentation mist-catching component is arranged opposite to the water storage chamber 36 so as to collect liquid obtained by vapor-liquid separation.

In one embodiment, the upper part of the cylinder is provided with an exhaust chamber 28, the side wall of the exhaust chamber 28 is provided with an exhaust chamber door 29 which can be opened and closed, and the bottom surface of the exhaust chamber 28 is provided with a three-stage mist catcher 11; a third sedimentation chamber 31 is arranged in the cavity below the exhaust chamber 28, a third sedimentation chamber door 30 which can be opened and closed is arranged on the side wall of the third sedimentation chamber 31, and a second-stage mist catcher 12 is arranged on the bottom surface of the third sedimentation chamber 31.

In a specific embodiment, a secondary sedimentation chamber 33 is arranged in the cylinder cavity below the tertiary sedimentation chamber 31, and a secondary sedimentation chamber door 32 capable of being opened and closed is arranged on the side wall of the secondary sedimentation chamber 33. The bottom surface of the secondary sedimentation chamber 33 is provided with a fine atomization plate 13, and the bottom surface of the fine atomization plate 13 is provided with a coarse atomization plate 14.

In one embodiment, a primary sedimentation chamber 34 is arranged in the inner cavity of the cylinder body below the secondary sedimentation chamber 33, and a primary sedimentation chamber door 35 capable of being opened and closed is arranged on the side wall of the primary sedimentation chamber 34.

The oil-water separator is provided with four doors, namely a primary sedimentation chamber door 35, a secondary sedimentation chamber door 32, a tertiary sedimentation chamber door 30 and an exhaust chamber door 29, so that copper oxide powder in each level inside the barrel can be cleaned regularly.

By arranging the multistage chambers in the sedimentation mist catching component, the gas flow speed can be reduced, the separation time of the atomized gas can be prolonged, the oil-water separation effect can be improved, more than 95 percent of emulsion and more than 99 percent of oxidized powder can be eliminated,

in a specific embodiment, a fan air inlet air door 10 is arranged on an air inlet pipe of the vacuum fan 9, and a pipeline extending out of the fan air inlet air door 10 is communicated with a positive pressure cavity 25 of the vacuum filter 26 through a booster pipe 8. To achieve efficient pressurization of the vacuum filter 26.

When the oil-water separator is used, the vacuum fan 9 is communicated with a negative pressure cavity of the vacuum filter 26 through a pipeline, emulsion mixed in collected gas is pumped out by negative pressure formed by the vacuum fan 9, emulsion passes through the primary oil-water separation filter screen 20 and is dispersed into liquid drops, the primary oil-water separation filter screen 20 can prevent the liquid drops with the diameter of more than 2mm from leaving the primary oil-water separation pipe 40, most of fog drops with the diameter of more than 2mm quickly drop in a channel of the primary oil-water separation pipe 40, and flow back to the vacuum chamber 22 when the air door is closed, and then flow back to an emulsion box in the vacuum filter 26 from the vacuum chamber 22 irreversibly for collection so as to be cleaned regularly; meanwhile, the primary separation drain 39 arranged at the bottom of the primary oil-water separation filter screen 20 can be periodically opened to clean the primary oil-water separation filter screen 20.

Almost all the liquid drops with the particle size of less than 500 mu m enter the secondary separation air inlet pipe 19 after rising along the first pipe section, a secondary separation air inlet filter screen 17 is arranged at the bottom of the secondary separation air inlet pipe 19, emulsion in the vapor-liquid mixture is re-liquefied and flows into an air inlet resistance pipe 37, the secondary separation air inlet filter screen 17 can also block part of copper oxide powder in the vapor-liquid mixture, and a secondary separation sewage drain hole 38 can be periodically opened for cleaning the secondary separation air inlet filter screen 17.

After passing through the small holes of the primary atomizer 16, the emulsion entering the air inlet resistance tube 37 is atomized for the first time, drops with the diameter of more than 1mm are directly dropped into the water storage chamber 36, and drops with the diameter of more than 100 micrometers in the vapor generated by atomization are settled to a part in the ascending process, and after the rest mixed vapor continuously passes through the coarse atomization plate 14 and the fine atomization plate 13 in sequence, drops with the particle diameter of more than 5-100 micrometers in the ascending vapor continuously enter the secondary settling chamber 33, and collide with each other to gradually grow into larger drops, and when passing through the secondary atomizer 12, the drops are condensed and aggregated on the wire mesh, and then drop down, and most of the emulsion in the air is blocked before the secondary atomizer 12, and the drops with the diameter of less than 50 micrometers in the rest small parts continuously ascend to the tertiary settling chamber 31, and during the ascending process, part of the drops collide with each other to aggregate, and drop down after the diameter growth; the remaining small amount of water vapor rises to the tertiary mist catcher 11, repeats the processes of adhesion, condensation, aggregation and then dripping on the wire mesh, and thus most of the emulsion and air are separated. The emulsion liquid drop content in the air entering the exhaust chamber 28 is reduced, the emulsion dropped in the whole sedimentation mist catching component is finally collected in the water storage chamber 36, the effective separation of the oil-water-gas mixture in the air inlet end of the vacuum filter 26 is completed, the foam forming height is effectively reduced, the emulsion is effectively recovered, the emulsion liquid drops in the recovery process are filtered step by step, the copper oxide powder contained in the emulsion in the form of liquid drops is easier to be effectively filtered and removed, and the filtering effect on the copper oxide powder in the emulsion is effectively improved.

In one embodiment, a manual drain 15 is provided on one side of the reservoir chamber 36; the other side of the secondary separation drain hole 38 is provided with an automatic drain 18 for periodic draining. And a liquid level sensor is arranged on the inner wall of the water storage chamber 36, and is electrically connected with the automatic drainer 18, so that when the liquid level is higher than the set liquid level of the automatic drainer 18, the liquid level sensor can automatically drain the excessive emulsion, and when the liquid level needs to be completely drained, the liquid level sensor is drained by using the manual drainage pipeline 15.

The oil-water separator can effectively separate the gasoline mixed gas in the vacuum chamber 22, and the vacuum fan 9 applies pressurization in the positive pressure cavity 25, so that positive pressure which is 1.1 times or more of atmospheric pressure is formed in the positive pressure cavity 25, and meanwhile, 12% negative pressure (about 100mm Hg) of atmospheric pressure can be formed in the vacuum chamber 22. Under the action of the two pressures, the vacuum filter 26 can achieve the filtering pressure, the filtering efficiency is greatly improved, and the contents of oxides, impurities and bacteria in the circulating emulsion are effectively reduced.

Another aspect of the present application also provides a production system comprising: a plurality of rolling mills, emulsion liquid collecting frames 7, vacuum fans 9, vacuum filters 26, positive pressure cavities 25, drain pipe filter cloth 24, emulsion spray components and oil-water separators; the emulsion liquid collecting frame 7 is arranged at one side of a plurality of rolling mills connected in series and used for collecting circulating emulsion; the emulsion spraying assembly is arranged at the emulsion spraying side of the plurality of tandem rolling mills; the emulsion liquid collecting frame 7 is communicated with a feed inlet pipeline of the vacuum filter 26; a positive pressure cavity 25 and a vacuum chamber 22 are arranged in the vacuum filter 26, and a drain filter cloth 24 is arranged on the interface where the positive pressure cavity 25 and the vacuum chamber 22 are communicated; the vacuum chamber 22 is in pipeline communication with the emulsion spray assembly;

the vacuum chamber 22 in the vacuum filter 26 is communicated with the air inlet pipeline of the vacuum fan 9, the oil-water separator is arranged on the communicating pipeline, and the vacuum fan 9 pumps out the emulsion-containing gas in the vacuum chamber 22 and introduces the emulsion-containing gas into the oil-water separator to separate the emulsion and the gas;

the air outlet of the vacuum fan 9 is communicated with the vacuum filter 26 through the booster pipe 8, and the air separated from the emulsion and the copper oxide powder is discharged into the vacuum filter 26;

the vacuum blower 9 is pressurized in the positive pressure chamber 25 through the pressurizing pipe 8, and forms a positive pressure of 1.1 times or more of the atmospheric pressure in the positive pressure chamber 25, and simultaneously forms a negative pressure (about 100mm hg) of 12% of the atmospheric pressure in the vacuum chamber 22.

The air from which emulsion and copper oxide powder are separated in the production system is discharged into a positive pressure cavity 25 communicated with a vacuum filter 26 through a pressurizing pipe 8, is pressurized in the positive pressure cavity 25, forms positive pressure which is more than or equal to 1.1 times of atmospheric pressure in the positive pressure cavity 25, and can form 12% negative pressure (about 100mm Hg) of atmospheric pressure in the vacuum cavity 22. Through the effect of the two pressures, the pressure required by filtration is formed in the vacuum filter 26, the filtration efficiency is greatly improved, the contents of oxides, impurities and bacteria in the emulsion are effectively reduced, the emulsion flowing through the positive pressure cavity 25 is filtered through the drain pipe filter cloth 24 arranged between the positive pressure cavity 25 and the vacuum chamber 22, the clean emulsion is obtained for recycling, the impurity content in the recycled emulsion is effectively reduced, and the quality of rolled pieces is improved.

The clean emulsion is supplied to a 16 inch rolling mill 2, a 12 inch horizontal rolling mill 3, a 12 inch vertical rolling mill 4 and an 8 inch rolling mill (8 stands) 6 through an emulsion pump 23 and an emulsion supply pipe 5 to cool, clean, reduce and lubricate the casting 1, so that the casting 1 has better surface quality in the rolling process, and the copper powder content of the final product is greatly reduced.

In one embodiment, the method comprises the following steps: an automatic drainage emulsion pump 23; the automatic draining emulsion pump 23 is arranged on a pipeline of the vacuum chamber 22 communicated with the emulsion spraying assembly, and can be specifically an emulsion liquid supply pipe 5.

In one embodiment, a plurality of rolling mills in series includes: a 16 inch rolling mill 2, a 12 inch horizontal rolling mill 3, a 12 inch vertical rolling mill 4, and an 8 inch rolling mill (8 stands) 6 arranged in series. The casting blank 1 sequentially passes through a 16 inch rolling mill 2, a 12 inch horizontal rolling mill 3, a 12 inch vertical rolling mill 4 and an 8 inch rolling mill (8 stands) 6.

Examples

Referring to fig. 1-2, in actual use, the emulsion of the SCR continuous casting and rolling production line is filtered by a vacuum filter, and an oil-water separator is arranged and comprises a primary oil-water separator (40) and a secondary oil-water separator (11-38), and the primary oil-water separator is arranged between a vacuum chamber 2 of the emulsion filter and a vacuum fan air door 5.

Comparative example

The difference from example 1 is that the above-mentioned oil-water separator was not used.

1. And (3) detecting the content of copper oxide powder:

the detection method comprises the steps of drying emulsion samples obtained by random sampling and measuring the solid content by a specific gravity method;

the content of copper oxide powder in the circulating emulsion used in examples and comparative examples was 1.36% and 20%, respectively. Therefore, after the oil-water separator is adopted, the content of copper oxide powder in the circulating emulsion can be effectively reduced, so that various defects on the surface of copper materials caused by the copper oxide powder contained in the emulsion are reduced, and the quality of the produced copper materials is improved.

2. Detecting the oxide content on the surface of the wire rod copper material:

the detection method comprises the following steps: and (3) carrying out dry brushing copper powder quantity measurement on the copper material sample obtained by random sampling, wherein the copper material sample is GB/T3952-2016 appendix A.

The surface oxide content of the copper material samples obtained in the comparative example and the example is reduced from 7.86mg to 4.04mg. After the oil-water separator is adopted, the residual copper oxide amount on the surface of the copper material can be effectively reduced, so that the surface defect amount of the copper material is reduced, and the quality of the copper material is improved.

3. Detecting the copper powder content on the surface of the wire rod copper material:

the detection method comprises the following steps: and (3) carrying out dry brushing copper powder quantity measurement on the copper material sample obtained by random sampling, wherein the copper material sample is GB/T3952-2016 appendix A.

The copper powder content of the copper surface obtained in the example is reduced by 48.6% compared with that of the comparative example. The adoption of the separator can effectively reduce the content of residual copper oxide on the surface of the copper material.

4. The use of the filter cloths in examples and comparative examples was recorded, and it was found from the statistics that the number of filter cloths used in examples was reduced by about 40.6% relative to comparative examples. After the oil-water separator is adopted, the usage amount of filter cloth can be effectively reduced.

According to the production record, after the oil-water separator in the embodiment is adopted, the vacuum filter is not overloaded and jumped and burned out after continuous production for one year.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. An SCR4500 continuous casting and rolling oil-water separator for production line, comprising: the device comprises a sedimentation mist capturing component, a primary oil-water separation filter screen, a secondary separation air outlet pipe, a secondary air inlet filter screen, a vacuum fan, a booster pipe and a vacuum filter;

the vacuum filter comprises: the vacuum chamber, the positive pressure cavity and the drain pipe filter cloth; the vacuum filter is internally provided with a vacuum chamber and a positive pressure cavity which are communicated with each other; a drain pipe filter cloth is arranged on the connecting section of the vacuum chamber and the positive pressure cavity; an air inlet of the vacuum fan is communicated with the vacuum chamber through an air inlet pipe; the air outlet of the vacuum fan is communicated with the positive pressure cavity pipeline;

the first-stage oil-water separation filter screen is accommodated and arranged at one end of the first pipe section, and the other end of the first pipe section is communicated with the air inlet pipe; the secondary air inlet filter screen is accommodated and arranged at one end of the secondary separation air inlet pipe, and one end of the secondary separation air inlet pipe is also communicated with the side wall of the lower part of the sedimentation mist catching component; the other end of the secondary separation air inlet pipe is communicated with the air inlet pipe outside the first pipe section; the extending end of the air inlet pipe is communicated with the secondary separation air outlet pipe; the extending end of the secondary separation air outlet pipe is communicated with the top of the sedimentation mist catching component;

the sedimentation mist-catching component comprises: the cylinder body and the multistage mist catcher and the multistage sedimentation chamber are arranged in the cylinder body in an accommodating manner; the multi-stage mist catcher divides the cylinder into a multi-stage sedimentation chamber;

the gas emulsion mixture is pumped by a vacuum fan, emulsion liquid drops with the particle size being more than 2mm are filtered by a primary oil-water separation filter screen, then enter a secondary separation air outlet pipe, emulsion liquid drops with the particle size being more than 1mm are filtered by a secondary air inlet filter screen, part of gas enters a sedimentation mist-catching component for gas-liquid separation, and the gas enters the vacuum fan from the top of the sedimentation mist-catching component;

a positive pressure of 1.1 times or more of atmospheric pressure is formed in the positive pressure chamber, and a negative pressure of 12% or more of atmospheric pressure is formed in the vacuum chamber.

2. The SCR4500 continuous casting and rolling line oil-water separator according to claim 1, comprising: an air inlet resistance tube, a primary atomizer; the secondary separation air inlet pipe is accommodated and provided with an air outlet on the side wall of one end of the secondary air inlet filter screen and is communicated with one end of the air inlet resistance pipe; the other end of the air inlet resistance pipe extends into a primary sedimentation chamber arranged in the lower part of the sedimentation mist catching component, and a primary atomizer is arranged in the extending end.

3. The SCR4500 continuous casting and rolling line oil-water separator of claim 1, wherein the sedimentation mist trap assembly comprises a housing disposed within the cartridge: fine atomization plate, coarse atomization plate, secondary mist catcher, and tertiary mist catcher; the fine atomization plate, the coarse atomization plate, the secondary mist catcher and the tertiary mist catcher are arranged in the cylinder body at intervals;

the fine atomization plate and the coarse atomization plate are overlapped and divide the inner cavity of the lower part of the cylinder into a secondary sedimentation chamber and a primary sedimentation chamber;

the three-stage mist catcher divides the inner cavity of the upper part of the cylinder body into an exhaust chamber and a three-time sedimentation chamber; the secondary mist catcher is arranged on the interface of the tertiary sedimentation chamber and the tertiary sedimentation chamber.

4. The SCR4500 continuous casting and rolling line oil-water separator according to claim 1, comprising: a secondary separation blow-down hole and a primary separation blow-down port; the bottom surface of the first pipe section is provided with a secondary separation sewage draining hole; the bottom of the secondary separation air inlet pipe is provided with a primary separation sewage outlet.

5. The SCR4500 continuous casting and rolling line oil-water separator according to claim 1, comprising: a water storage chamber; the water storage chamber is arranged on the bottom surface of the cylinder body and is communicated with the cylinder body.

6. The SCR4500 continuous casting and rolling line oil-water separator according to claim 5, comprising: a liquid level sensor, a manual drain pipe and an automatic drain; the manual drain pipe and the automatic drain pipe are arranged on the water storage chamber at intervals; the liquid level sensor is arranged in the water storage chamber and is electrically connected with the automatic drainer.

7. An SCR4500 continuous casting and rolling line oil-water separator according to claim 3, comprising: primary settling chamber door, secondary settling chamber door, tertiary settling chamber door, and exhaust chamber door; the primary sedimentation chamber door is arranged on the side wall of the primary sedimentation chamber; the secondary sedimentation chamber door is arranged on the side wall of the secondary sedimentation chamber; the third sedimentation chamber door is arranged on the side wall of the third sedimentation chamber; the exhaust chamber door is arranged on the side wall of the exhaust chamber.

8. The SCR4500 continuous casting and rolling line oil-water separator according to claim 1, comprising: an air inlet door; the air inlet door is arranged on an air inlet pipe of the vacuum fan.

9. A production system, comprising: a plurality of rolling mills, emulsion liquid collecting frames, emulsion spraying components and oil-water separators as set forth in any one of claims 1-8 connected in series;

the emulsion liquid collecting rack is arranged at one side of a plurality of rolling mills connected in series and used for collecting circulating emulsion;

the emulsion spraying assembly is arranged at the emulsion spraying side of the plurality of tandem rolling mills;

the emulsion liquid collecting frame is communicated with a pipeline of a feed inlet of the vacuum filter;

the liquid outlet of the vacuum chamber of the vacuum filter is communicated with the emulsion spraying assembly pipeline;

the emulsion gas mixture in the vacuum chamber is pumped out by a vacuum fan and is introduced into the oil-water separator as set forth in any one of claims 1 to 8 for emulsion and gas separation;

the air outlet of the vacuum fan is communicated with the vacuum filter through a pressurizing pipe, the air separated from emulsion and copper oxide powder is discharged into the vacuum filter, the air is pressurized in the positive pressure cavity 25, positive pressure which is more than or equal to 1.1 times of atmospheric pressure is formed in the positive pressure cavity 25, and meanwhile, 12% negative pressure of atmospheric pressure is formed in the vacuum cavity 22.

10. The production system of claim 9, wherein the plurality of rolling mills in series comprises: a 16 inch rolling mill, a 12 inch horizontal rolling mill, a 12 inch vertical rolling mill and an 8 inch rolling mill which are arranged in series; passing the casting blank through an inch rolling mill, a 12 inch horizontal rolling mill, a 12 inch vertical rolling mill and an 8 inch rolling mill in sequence;

preferably, it comprises: an automatic drainage emulsion pump and an emulsion supply pipe; one end of the emulsion supply pipe is communicated with the emulsion spraying component, and the other end is communicated with the vacuum chamber; the automatic drainage emulsion pump is arranged on the emulsion liquid supply pipe.