CN211435729U

CN211435729U - Waste gas treatment equipment

Info

Publication number: CN211435729U
Application number: CN201921938004.9U
Authority: CN
Inventors: 陈宣金
Original assignee: Shanghai Juhang Industrial Development Co ltd
Current assignee: Zhonghuan Fenglei Environmental Protection Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-09-08
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a waste gas treatment equipment, it includes: a pickling tank; the sealing cover is arranged on a notch of the pickling tank in a sealing manner, and at least two groups of steam pipelines for inputting external steam into the pickling tank are arranged on the sealing cover; the air exhaust assembly is connected with the pickling tank in a matching way; the condensation tower is respectively connected with the air extraction component and the pickling tank in a matching way; the waste gas purification tower is connected with the condensing tower; and the exhaust funnel is connected with the gas outlet of the waste gas purification tower. The utility model discloses practiced thrift the cost, improved the purifying effect of waste gas and protected the environment.

Description

Waste gas treatment equipment

Technical Field

The utility model relates to a coil of strip pickling field, concretely relates to exhaust-gas treatment equipment.

Background

At present, hot rolled carbon steel coils generally need to be pickled after being fed, the pickling generally utilizes hydrochloric acid solution to match with high temperature to remove oxide scales and rusts on the surfaces of steel, but during pickling, a lot of waste gas containing acid mist is generally generated.

In the prior art, a pickling tank is generally opened, and waste gas generated during pickling is directly discharged to the atmosphere, so that the environment is greatly polluted.

In addition, the pickling tank is sealed, and then the waste gas is uniformly recovered, purified and discharged through a pipeline, but the waste gas contains a large amount of hydrochloric acid, so that waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, thereby providing a waste gas treatment equipment which not only protects the environment but also does not waste hydrochloric acid.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an exhaust gas treatment device, comprising:

a pickling tank;

the sealing cover is arranged on a notch of the pickling tank in a sealing manner, and at least two groups of steam pipelines for inputting external steam into the pickling tank are arranged on the sealing cover;

the air exhaust assembly is connected with the pickling tank in a matching way;

the condensation tower is respectively connected with the air extraction component and the pickling tank in a matching way;

the waste gas purification tower is connected with the condensing tower;

and the exhaust funnel is connected with the gas outlet of the waste gas purification tower.

Through the waste gas that produces when pickling the descaling bath pickling extraction in unison, then earlier through the condensing tower condensation, isolate hydrochloric acid in the waste gas, and directly supply hydrochloric acid for the descaling bath, so practice thrift the cost greatly, and waste gas can get rid of some harmful gas through the condensation in the waste gas when the condensation, then purifies once more through the exhaust gas purification tower, and the exhaust stack high altitude of rethread is discharged at last, has improved waste gas purification efficiency so greatly, thereby has protected the environment.

In a preferred embodiment of the present invention, the pickling tank includes a rectangular tank body, the sealing cover is detachably disposed at the notch of the rectangular tank body, a rectangular bracket is disposed in the pickling tank, and the hot-rolled carbon steel coil to be pickled can be placed on the rectangular bracket.

Through setting sealed lid to detachable, the rectangle support of being convenient for like this places the descaling bath in and the rectangle support of being convenient for takes out from the descaling bath, and through placing hot rolling carbon steel coil of strip on the rectangle support carries out the pickling, is convenient for like this take out hot rolling carbon steel coil of strip from the descaling bath fast in unison after the pickling, improves the efficiency of taking.

In a preferred embodiment of the present invention, the pickling tank comprises a bottom plate, wherein four sides of the bottom plate are respectively provided with a front side plate, a rear side plate, a left side plate and a right side plate, the lower surface of the bottom plate is provided with a plurality of support columns, the middle part of the bottom plate is provided with a rectangular hole, a liftable partition plate is arranged in the rectangular hole, the bottom of the pickling tank is provided with a first telescopic cylinder, the first telescopic cylinder is connected with the bottom side of the partition plate and drives the partition plate to lift, the partition plate is parallel to the left side plate and the right side plate, the top side of the partition plate can be contacted with a sealing cover, two sides of the partition plate can be contacted with the front side plate and the rear side plate respectively, the inside of the pickling tank is divided into two independent cavities after the top side of the partition plate is contacted with the sealing cover, the sealing cover is provided with two steam pipelines, each steam pipeline is communicated, the height of the partition plate is greater than that of the pickling tank.

The pickling tank can be divided into two independent cavities through the lifting of the partition plate, the rectangular support can be used for pickling in the two cavities respectively, the hydrochloric acid concentration and the steam temperature in the two cavities can be controlled respectively, the hot-rolled carbon steel coil can be pickled twice at different hydrochloric acid concentrations and steam temperatures in one pickling tank, and the pickling effect is greatly improved.

In addition, the pickling tank is divided into two independent cavities, and the concentration of hydrochloric acid and the concentration of steam in each cavity can be quickly adjusted, so that the pickling efficiency is improved.

In a preferred embodiment of the present invention, a driving assembly is respectively disposed on the front side plate and the rear side plate, the driving assembly is connected to the rectangular support, and can drive the rectangular support to move in the pickling tank, the driving assembly includes a second telescopic cylinder, a slide rail, a connecting rod and a roller, the slide rail is disposed on the outer side surface of the front side plate or the rear side plate, the roller is slidably disposed in the slide rail, one end of the connecting rod is fixedly connected to the rectangular support, and the other end of the connecting rod is sequentially sealed and passes through the roller on the front side plate or the rear side plate and the slide rail and the connecting block fixed connection on the telescopic end of the second telescopic cylinder.

The rectangular support is driven to move in the pickling tank by arranging the driving assembly outside the pickling tank, so that the rectangular support can be moved in the pickling tank under the condition that the sealing cover is not opened and the sealing performance of the pickling tank is guaranteed, and the pickling is carried out twice.

In a preferred embodiment of the present invention, the slide rail includes a horizontal end, an end of the horizontal end extends to an arc end bent upward, and the rectangular bracket is provided with a plurality of through holes.

Set the arc end of kickup to through the end with the slide rail, the gyro wheel is when removing along the slide rail like this, can remove along the arc end when removing the end, thereby make the rectangle support whole rise, and the rectangle support rises the back, because the rectangle support whole is the fretwork form, the hydrochloric acid solution of keeping hot rolling carbon steel coil of strip is under the influence of gravitational potential energy, can follow the through-hole on the rectangle support and drop again in the descaling bath, can retrieve the hydrochloric acid on the hot rolling carbon steel coil of strip easily, therefore, the cost is saved, the washing efficiency of follow-up washing process can be improved again.

The utility model discloses a preferred embodiment, be equipped with first spout and second spout on the medial surface of preceding curb plate and posterior lateral plate respectively, first spout communicates with the slide rail in the preceding curb plate or posterior lateral plate outside, and the connecting rod other end seals in proper order and passes the gyro wheel on first spout and the slide rail and the flexible connecting block fixed connection who serves of second telescopic cylinder, the second spout is the same with first spout shape, be equipped with slidable second connecting rod on the second spout, second connecting rod and rectangular support fixed connection.

Through the setting of two second connecting rods, can be unsettled with the whole level of rectangular support in the descaling bath, avoid rectangular support and cell body contact to influence rectangular support's removal and avoid rectangular support to rock when removing, will place the hot rolling carbon steel coil of strip above that in the descaling bath drops.

In a preferred embodiment of the utility model, the air exhaust component comprises a plurality of air pipes, one end of each air pipe is communicated with the pickling tank, the other end is communicated with the condensing tower, a variable frequency fan is arranged in each air pipe, two connecting pipelines are arranged between the condensing tower and the pickling tank, and each connecting pipeline is communicated with a cavity.

Therefore, the condensed hydrochloric acid can be respectively and independently conveyed to the two cavities, and the concentration of the hydrochloric acid in each cavity can be conveniently and independently adjusted.

In a preferred embodiment of the present invention, the exhaust gas treatment device further includes a controller, a first electromagnetic switch valve is disposed in each connection pipeline, a second switch electromagnetic valve is disposed on each steam pipeline, a first temperature sensor and a first hydrochloric acid concentration tester are disposed on the inner side surface of the left side plate, a second temperature sensor and a second hydrochloric acid concentration tester are disposed on the inner side surface of the right side plate, and the controller is connected to the first switch electromagnetic valve, the second switch electromagnetic valve, the first temperature sensor, the first hydrochloric acid concentration tester, the second temperature sensor, the second hydrochloric acid concentration tester and the first telescopic cylinder.

The controller is used for controlling the opening of the first switch electromagnetic valve and the second switch electromagnetic valve to control the connection pipeline and the steam pipeline to be closed, the controller is respectively connected with the first hydrochloric acid concentration tester, the second temperature sensor, the second hydrochloric acid concentration tester and the first telescopic cylinder to know the temperature and the hydrochloric acid concentration in the two cavities in real time, so that the automatic adjustment of the temperature and the hydrochloric acid concentration in the two cavities can be realized only through one controller, and the working efficiency is improved.

In a preferred embodiment of the present invention, the steam pipeline is directly connected to the steam outlet of the steam boiler.

Therefore, the steam generated by the steam boiler can be directly reused, and the cost is greatly saved.

The utility model has the advantages that:

(1) the cost is saved, the purification effect of waste gas is improved, and the environment is protected;

(2) the pickling effect and the pickling efficiency are improved;

(3) the taking efficiency of the hot-rolled carbon steel coil is improved;

(4) the subsequent washing efficiency of the hot-rolled carbon steel coil is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing the internal structure of a pickling tank when a partition plate is lifted;

FIG. 3 is a schematic view showing the internal structure of a pickling tank when the partition is lowered;

FIG. 4 is a schematic view of the connection of a rectangular bracket to a drive assembly;

fig. 5 is a control schematic diagram of the controller.

Reference numerals: a pickling tank 100; a sealing cover 200; an air duct 300; a condensing tower 400; an exhaust gas purification tower 500; an exhaust stack 600; a rectangular bracket 700; a vapor line 210; a connecting line 410; a base plate 110; a front side plate 120; a rear side plate 130; a left side plate 140; a right side plate 150; a support column 160; a partition 800; a first telescopic cylinder 810; a cavity 820; a second telescopic cylinder 910; a slide rail 920; a connecting rod 930; a roller 940; a connection block 911; a first chute 180; a second chute 170; a second connecting rod 171; an inner frame body 720; an outer frame body 730; a controller 1000; a first on-off solenoid valve 411; a second on-off solenoid valve 211; a first temperature sensor 141; a first hydrochloric acid concentration tester 142; a second temperature sensor 151; a second hydrochloric acid concentration tester 152.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further explained below.

Referring to fig. 1 to 5, the utility model provides a waste gas treatment equipment, it includes descaling bath 100, sealed lid 200, the subassembly of bleeding, condensing tower 400, exhaust gas purification tower 500 and aiutage 600.

The pickling tank 100 may be a rectangular tank body, and the inside of the pickling tank may be filled with a hydrochloric acid solution, and after the hot-rolled carbon steel coil is placed in the pickling tank 100, pickling may be performed by the hydrochloric acid solution.

The sealing cover 200 is arranged at the notch of the pickling tank 100 in a sealing manner and is used for sealing the pickling tank 100, so that a sealed cavity is formed inside the pickling tank 100.

The sealing cover 200 is detachably mounted at the notch of the pickling tank 100, so that it is easy to detach and mount.

The detachable installation mode between the sealing cover 200 and the pickling tank 100 can adopt a mutually matched clamping groove type or a mutually matched snap type.

Of course, the two structures are not limited, and other connecting structures can be adopted, so long as the sealing cover 200 and the pickling tank 100 can be detachably connected in a sealing manner.

The rectangular support 700 is arranged in the pickling tank 100, after the sealing cover 200 is detached from the pickling tank 100, the rectangular support 700 can be placed into the pickling tank 100 and is positioned in the hydrochloric acid solution, and the hot-rolled carbon steel coils to be pickled can be uniformly stacked on the rectangular support 700, so that after pickling is finished, the sealing cover 200 is opened, the rectangular support 700 is integrally taken out from the pickling tank 100, and the efficiency is very high.

At least two groups of steam pipelines 210 are arranged on the sealing cover 200, one end of each steam pipeline 210 is communicated with a sealing cavity formed in the pickling tank 100, the other end of each steam pipeline 210 can be connected with a steam source, and the steam pipelines 210 are used for conveying external high-temperature steam into the pickling tank.

The steam source can be boiler steam, and only the steam pipeline 210 needs to be connected to a steam outlet of the boiler, so that the steam generated by the steam boiler can be directly reused, and the cost is greatly saved.

When the hot-rolled carbon steel coil is pickled by hydrochloric acid solution, the pickling effect can be improved by introducing high-temperature steam, but a large amount of waste gas is generated, and the waste gas also contains hydrochloric acid.

And an air extraction component which is arranged at one side of the pickling tank 100 and can extract the waste gas generated in the pickling tank 100 and convey the waste gas to the condensing tower 400.

The air exhaust assembly specifically comprises a plurality of air pipes 300, one end of each air pipe 300 is communicated with the pickling tank 100, the other end of each air pipe 300 is communicated with the condensing tower 400, and a variable frequency fan is arranged in each air pipe 300, so that waste gas in the pickling tank 100 can be exhausted and conveyed to the condensing tower 400 only by opening the variable frequency fan.

The condensing tower 400, it is current structure, and it is used for condensing the waste gas that gets into its inside to separate hydrochloric acid in the waste gas, and, condensing tower 400 still connects the descaling bath 100 through connecting line 410, thereby flows back the hydrochloric acid who separates for the descaling bath 100 once more through connecting line 410, can utilize the hydrochloric acid who separates out once more like this, has practiced thrift the cost greatly.

In addition, when the exhaust gas is condensed in the condensing tower 400, many harmful components other than hydrochloric acid are separated from the exhaust gas, so that the purification efficiency of the exhaust gas can be improved.

Waste gas purification tower 500, its gas outlet through tube coupling condensing tower 400, waste gas after condensing tower 400 condensation can flow into waste gas purification tower 500 in, and it is specifically a sealed tank body, and it has the NaOH solution to pack in the sealed tank body, and the waste gas that gets into in waste gas purification tower 500 can react with the NaOH solution to get rid of the harmful component in the waste gas.

Through the cooperation purification of condensing tower 400 and exhaust gas purification tower 500 for purification efficiency reaches more than 90%, can accord with the second grade standard requirement of atmospheric pollutants integrated emission standard.

Gas after the processing of exhaust gas purification tower 500, this application does not directly discharge, prevents still to remain harmful gas in the gas to directly cause the injury to the human body, this application discharges through aiutage 600.

And an exhaust funnel 600 having a height of 32 m or more, connected to an outlet of the exhaust gas purification tower 500, and through which the gas treated by the exhaust gas purification tower 500 may be discharged to the upper air.

For the above exhaust gas treatment device, the following present application also provides an optimized structure:

the pickling tank 100 comprises a bottom plate 110, a front side plate 120, a rear side plate 130, a left side plate 140 and a right side plate 150 are respectively arranged on four sides of the bottom plate 110, a plurality of supporting columns 160 are arranged on the lower surface of the bottom plate 110, the pickling tank 100 can be integrally supported in a half-hollow state through the supporting columns 160, so that the connecting pipeline 410 can be directly communicated with the bottom of the pickling tank 100, hydrochloric acid is directly supplemented into hydrochloric acid solution in the pickling tank 100, and therefore the hydrochloric acid is prevented from reacting with high-temperature steam or waste gas in the pickling tank 100 when flowing into the pickling tank 100, and a part of hydrochloric acid is taken away along with the waste gas.

A rectangular hole is formed in the middle of the bottom plate 100, a liftable partition plate 800 is arranged in the rectangular hole, a first telescopic cylinder 810 is arranged at the bottom of the pickling tank 100, and the first telescopic cylinder 810 is connected with the bottom side of the partition plate 800 and drives the partition plate 800 to lift.

The partition plate 800 is parallel to the left and

right side plates

140 and 150, the top side of the partition plate 800 can contact with the sealing cover 200, the two sides of the partition plate 800 can contact with the front and

rear side plates

120 and 130, respectively, and the height of the partition plate 800 is greater than that of the pickling tank 100, so that the inside of the pickling tank 100 can be divided into two independent cavities 820 after the top side of the partition plate 800 contacts with the sealing cover 200.

In order to ensure the sealing performance inside the pickling tank 100, a sealing ring matched with the partition plate 800 is arranged in the rectangular hole, a layer of sealing plate is respectively arranged on the top side and two sides of the partition plate 800, and the sealing ring and the sealing plate are made of elastic rubber or silica gel.

The two steam pipes 210 on the sealing cover 200 are specifically arranged and are positioned at two sides of the sealing cover 200, so that each steam pipe 210 is just communicated with one cavity 820, and the temperature in each cavity 820 can be adjusted by controlling the steam inlet amount of each steam pipe 210.

The length of the rectangular bracket 700 is smaller than the distance between the partition 800 and the left or

right side plate

140 or 150, so that the rectangular bracket 700 can be separately located in any one of the cavities 820.

In order to improve the pickling effect of the hot-rolled carbon steel coil, the prior art generally realizes multiple pickling, such as twice pickling and three-time pickling, and the multiple pickling mode is not simply repeated for several times in one tank body, but needs to carry out pickling with hydrochloric acid with different concentrations and steam with different temperatures in different tank bodies, so that the pickling effect is improved.

The pickling tank 100 can be divided into two independent cavities 820 by controlling the rising of the partition plate 800 through the first telescopic cylinder 810, the rectangular support 700 can be used for pickling in the two cavities 820 respectively, and the pickling of the hot-rolled carbon steel coil with different hydrochloric acid concentrations and steam temperatures twice in the pickling tank 100 can be realized by controlling the hydrochloric acid concentrations and the steam temperatures in the two cavities 820 respectively, so that the pickling effect is improved, and the cost is greatly saved.

According to actual needs, two partition plates can be further arranged in the pickling tank 100, the pickling tank 100 is divided into three independent sealed cavities, the number of the steam pipelines 210 is correspondingly three, the length of the rectangular support 700 is correspondingly set to be one third of that of the pickling tank 100, and therefore three-time pickling of the hot-rolled carbon steel coil can be achieved.

In addition, because the pickling tank 100 is divided into the two independent cavities 820, the size of the cavities 820 is small, so that the hydrochloric acid concentration and the steam concentration in each cavity can be adjusted very quickly, and the pickling efficiency is improved.

Since the rectangular bracket 700 needs to be moved in the pickling tank 100 without opening the sealing cover 200, so as to realize independent cleaning in the two cavities 820, a driving assembly is respectively arranged on the front side plate 120 and the rear side plate 130, and the driving assembly is connected with the rectangular bracket 700 and can drive the rectangular bracket 700 to move in the pickling tank 100.

The driving assembly specifically comprises a second telescopic cylinder 910, a sliding rail 920, a connecting rod 930 and a roller 940, the sliding rail 920 is arranged on the outer side surface of the front side plate 120 or the rear side plate 130, the roller 940 is slidably arranged in the sliding rail 920, one end of the connecting rod 930 is fixedly connected with the rectangular support 700, the other end of the connecting rod 930 is sequentially and hermetically connected with a connecting block 911 on the telescopic end of the second telescopic cylinder 910 through the roller on the front side plate 120 or the rear side plate 130 and the sliding rail 920, and thus the rectangular support 700 can be driven to move in the pickling tank 100 through the second telescopic cylinder 910.

In addition, the inner side surfaces of the front side plate 120 and the rear side plate 130 are respectively provided with a first sliding groove 180 and a second sliding groove 170, the first sliding groove 180 is communicated with a sliding rail 920 on the outer side of the front side plate 120 or the outer side of the rear side plate 130, the other end of the connecting rod 930 can sequentially and hermetically penetrate through rollers on the first sliding groove 180 and the sliding rail 920 to be fixedly connected with a connecting block 911 on the telescopic end of the second telescopic cylinder 910, and the connecting rod 930 can move along the first sliding groove 180.

In order to ensure the sealing performance, a sealing ring is provided on the first sliding groove 180 to be engaged with the connecting rod 930.

Because the rectangular support 700 is fixedly connected with the connecting rod 930 through two sides of the front end, the rectangular support 700 is moved in the pickling tank 100 by pulling the connecting rod 930, so that the rectangular support 700 can be inclined, and when the rectangular support 700 is moved, the rear end of the rectangular support 700 is rubbed with the tank body of the pickling tank 100, so that the rectangular support 700 is rocked and the pickling tank 100 is damaged.

This application is through setting up second spout 170, and second spout 170 is the same with first spout 180 shape, and the symmetry sets up on the medial surface of preceding curb plate 120 or posterior lateral plate 130, is equipped with slidable second connecting rod 171 on second spout 170, the one end fixed connection of second connecting rod 171 and rectangular support 700 rear side.

Like this, through the setting of two second connecting rods 171 and two second spouts 170, can be unsettled in the descaling bath 100 with the whole level of rectangular support 700, avoid the cell body contact of rectangular support 700 with descaling bath 100 to influence the removal of rectangular support 700 and avoid rectangular support 700 to rock when removing, the hot rolling carbon steel coil of strip that will place above it drops in the descaling bath 100.

In addition, the slide rail 920 includes a horizontal end, an arc end bent upward extends from the end of the horizontal end, the shape of the first sliding groove 180 is the same as that of the slide rail 920, the stroke is the same, and the rectangular bracket 700 is provided with a plurality of through holes.

Like this, the arc end of kickup is set to through the end with slide rail 920 and first spout 180, gyro wheel 940 is when removing along slide rail 920 like this, can remove along the arc end when removing to the end, thereby make the whole rising of rectangular support 700, and rectangular support 700 rises the back, because rectangular support 700 wholly is the fretwork form, the hydrochloric acid solution of keeping in hot rolling carbon steel coil of strip is under the influence of gravitational potential energy, can drop again in pickling bath 100 from the through-hole on rectangular support 700, can retrieve the hydrochloric acid on the hot rolling carbon steel coil of strip easily, and therefore, the cost is saved, and the washing efficiency of follow-up washing process can be improved again.

Since the rectangular bracket 700 is respectively and fixedly connected with the connecting rod 930 and the second connecting rod 171, the rectangular bracket 700 cannot be taken out of the pickling tank 100 as a whole, the present application can correspondingly improve the structure of the rectangular bracket 700, the rectangular bracket 700 is divided into the inner frame body 720 and the outer frame body 730, the inner frame body 720 and the outer frame body 730 are respectively provided with a plurality of through holes, the inner frame body 720 is detachably inserted into the outer frame body 730, the hot-rolled carbon steel coil can be integrally stacked in the inner frame body 720, the outer frame body 730 is respectively and fixedly connected with the connecting rod 930 and the second connecting rod 171, so that the driving assembly drives the outer frame body 730 to move, thereby realizing the integral movement of the rectangular bracket 700, when the hot-rolled carbon steel coil is pickled, the hot-rolled carbon steel coil is only required to be placed in the inner frame body 720 in advance, then the inner frame body 720 is placed in the outer frame body 730, and after the hot-, the inner frame 720 can be taken out of the outer frame 730.

In addition, in order to improve the working efficiency, the present application further includes a controller 1000, a first electromagnetic switch valve 411 is disposed in each connecting pipeline 410, a second switch electromagnetic valve 211 is disposed on each steam pipeline 210, a first temperature sensor 141 and a first hydrochloric acid concentration tester 142 are disposed on the inner side surface of the left side plate 140, a second temperature sensor 151 and a second hydrochloric acid concentration tester 152 are disposed on the inner side surface of the right side plate 150, and the controller 1000 is connected to the first switch electromagnetic valve 411, the second switch electromagnetic valve 211, the first temperature sensor 141, the first hydrochloric acid concentration tester 142, the second temperature sensor 151, the second hydrochloric acid concentration tester 152, the first telescopic cylinder 810 and the second telescopic cylinder 910.

In this way, the controller 1000 may receive the temperature information and the hydrochloric acid concentration information in the two cavities 820 respectively detected by the first temperature sensor 141, the first hydrochloric acid concentration tester 142, the second temperature sensor 151, and the second hydrochloric acid concentration tester 152 in real time, and adjust the temperature and the hydrochloric acid concentration in the two cavities 820 to preset temperature values and hydrochloric acid concentration values in real time by controlling the on/off of the first electromagnetic switch valve 411 and the second electromagnetic switch valve 211 according to the received information, so as to facilitate the subsequent two pickling processes with different temperatures and different hydrochloric acid concentrations.

An operator may control the movement of the partition 800 and the rectangular bracket 700 through the controller 1000.

The following is a specific working process of the present application:

firstly, uniformly stacking hot-rolled carbon steel coils to be pickled on a rectangular support 700, then opening a sealing cover 200 from a pickling tank 100, placing the rectangular support 700 to the rightmost side in the pickling tank 100, then installing the sealing cover 200 on the pickling tank 100, then controlling a first telescopic cylinder 810 to work through a controller to lift a partition plate 800 until the partition plate is propped against the sealing cover 200, then carrying out pickling, controlling the temperature and the hydrochloric acid concentration in a cavity 820 on the right side in real time through the controller during pickling, pumping waste gas in the cavity 820 on the right side into a condensing tower 400 by starting a variable frequency fan after pickling for a period of time, separating hydrochloric acid in the waste gas when the waste gas enters the condensing tower 400 for condensation, then conveying the waste gas into the pickling tank 100 again, enabling the waste gas condensed by the condensing tower 400 to flow into a waste gas purification tower 500 to react with a NaOH solution, thereby removing harmful components in the exhaust gas and then discharging to the high altitude through the exhaust funnel 600;

after the exhaust gas is extracted, the controller 1000 controls the first telescopic cylinder 810 to work to lower the partition 800, then the controller 1000 controls the second telescopic cylinder 910 to work to move the rectangular bracket 700 to the leftmost side in the pickling tank 100, then the controller 1000 controls the first telescopic cylinder 810 to work to lift the partition 800 again until the partition abuts against the sealing cover 200, then the pickling is performed again, during the pickling, the controller 1000 controls the temperature and the hydrochloric acid concentration in the cavity 820 on the right side in real time until the pickling is completed, after the pickling is completed, the variable frequency fan is turned on again to pump the exhaust gas in the cavity 820 on the left side into the condensing tower 400, when the exhaust gas enters into the condensing tower 400 for condensation, the hydrochloric acid in the exhaust gas is separated out and then conveyed into the pickling tank 100 again, the exhaust gas condensed by the condensing tower 400 flows into the exhaust gas purification tower 500 to react with the NaOH solution, thereby removing harmful components in the exhaust gas and then discharging to the high altitude through the exhaust funnel 600;

finally, the controller 1000 controls the second telescopic cylinder 910 to work again, at this time, the rectangular bracket 700 is moved to a position above the hydrochloric acid solution in the pickling tank 100, and after a while, the sealing cover 200 is opened, and the rectangular bracket 700 is taken out from the pickling tank 100 for subsequent cleaning.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An exhaust gas treatment device, comprising:

a pickling tank;

the air exhaust assembly is connected with the pickling tank in a matching way;

the waste gas purification tower is connected with the condensing tower;

2. The exhaust gas treatment equipment as claimed in claim 1, wherein the pickling tank comprises a rectangular tank body, the sealing cover is detachably arranged at the notch of the rectangular tank body, a rectangular bracket is arranged in the pickling tank, and a hot rolled carbon steel coil to be pickled can be placed on the rectangular bracket.

3. The waste gas treatment equipment according to claim 2, wherein the pickling tank comprises a bottom plate, four sides of the bottom plate are respectively provided with a front side plate, a rear side plate, a left side plate and a right side plate, the lower surface of the bottom plate is provided with a plurality of supporting columns, the middle part of the bottom plate is provided with a rectangular hole, a liftable partition plate is arranged in the rectangular hole, the bottom of the pickling tank is provided with a first telescopic cylinder, the first telescopic cylinder is connected with the bottom side of the partition plate and drives the partition plate to ascend and descend, the partition plate is parallel to the left side plate and the right side plate, the top side of the partition plate can be contacted with a sealing cover, two sides of the partition plate are respectively contacted with the front side plate and the rear side plate, the top side of the partition plate is contacted with the sealing cover to divide the inside of the pickling tank into two independent cavities, the sealing cover is, the length of the rectangular support is smaller than the distance between the partition board and the left side plate or the right side plate, and the height of the partition board is larger than that of the pickling tank.

4. The waste gas treatment equipment of claim 3, wherein the front side plate and the rear side plate are respectively provided with a driving assembly, the driving assembly is connected with the rectangular support, the driving assembly can drive the rectangular support to move in the pickling tank, the driving assembly comprises a second telescopic cylinder, a sliding rail, a connecting rod and a roller, the sliding rail is arranged on the outer side surface of the front side plate or the rear side plate, the roller is slidably arranged in the sliding rail, one end of the connecting rod is fixedly connected with the rectangular support, and the other end of the connecting rod sequentially penetrates through the roller on the front side plate or the rear side plate and the sliding rail and is fixedly connected with a connecting block on the telescopic end of the second telescopic cylinder.

5. The exhaust gas treatment device of claim 4, wherein the slide rail comprises a horizontal end, the end of the horizontal end extends to an arc end bent upwards, and the rectangular bracket is provided with a plurality of through holes.

6. The exhaust-gas treatment equipment of claim 4, characterized in that the inside surfaces of the front side plate and the rear side plate are respectively provided with a first chute and a second chute, the first chute is communicated with a slide rail outside the front side plate or the rear side plate, the other end of the connecting rod sequentially penetrates through the first chute and a roller on the slide rail in a sealing manner to be fixedly connected with a connecting block on the telescopic end of the second telescopic cylinder, the second chute is identical to the first chute in shape, the second chute is provided with a slidable second connecting rod, and the second connecting rod is fixedly connected with the rectangular support.

7. The waste gas treatment equipment as claimed in claim 3, wherein the air exhaust assembly comprises a plurality of air pipes, one end of each air pipe is communicated with the pickling tank, the other end of each air pipe is communicated with the condensing tower, a variable frequency fan is arranged in each air pipe, two connecting pipelines are arranged between the condensing tower and the pickling tank, and each connecting pipeline is communicated with one cavity.

8. The exhaust gas treatment device according to claim 7, further comprising a controller, wherein a first electromagnetic switch valve is disposed in each connection pipe, a second switch electromagnetic valve is disposed in each steam pipe, the inner side surface of the left side plate is provided with a first temperature sensor and a first hydrochloric acid concentration tester, the inner side surface of the right side plate is provided with a second temperature sensor and a second hydrochloric acid concentration tester, and the controller is connected to the first switch electromagnetic valve, the second switch electromagnetic valve, the first temperature sensor, the first hydrochloric acid concentration tester, the second temperature sensor, the second hydrochloric acid concentration tester and the first telescopic cylinder.

9. An exhaust gas treatment device according to any of claims 1-8, wherein the steam line is directly connected to the steam outlet of the steam boiler.