CN211177984U - Primary fine dust removal and flue gas whitening device for converter - Google Patents

Abstract

The utility model discloses a converter is once smart dust removal and flue gas takes off white device, it includes: a spray tower; the white-removing device comprises a heat exchanger and a cold air pipeline, the heat exchanger is a sea wave tile-shaped plate heat exchanger, a tail gas inlet communicated with the flue gas discharge pipe is formed in the top of the heat exchanger, a condensed water outlet and a tail gas outlet communicated with a chimney are respectively formed in the bottom of the heat exchanger, the cold air pipeline penetrates through the side wall of the heat exchanger, is communicated into and out of the heat exchanger for three times from bottom to top along the axis direction to form an S-shaped cold air heat exchange pipeline, and the tail end of the cold air pipeline is communicated with the chimney; and a water circulation system. Primary smart dust removal of converter and flue gas take off white device utilizes spray column and dehydrator to cool down again and smart dust removal processing to the flue gas, recycles and takes off white device and takes off white processing to the flue gas, finally reaches visual no white cigarette, no trailing phenomenon, and waste heat utilization is high, sets up water circulating system in addition, the water economy resource reduces the cost in business.

Description

Primary fine dust removal and flue gas whitening device for converter

Technical Field

The utility model relates to a technical field is handled to the flue gas. More specifically, the utility model relates to a converter is once smart dust removal and flue gas takes off white device.

Background

The existing converter adopts an OG (one-time gas scrubbing) method primary dedusting system, a large amount of white smoke can be discharged from a waste gas discharge port in the actual operation process, the white smoke is mainly generated because high-temperature smoke is cooled when being discharged, and the saturation of gaseous water in the air is reduced along with the reduction of the temperature, so that the smoke can reach the dew point temperature after being cooled, and at the moment, the gaseous water in the smoke can be condensed into liquid water. The existence of white smoke not only produces visual pollution to a certain extent, but also is a main contribution source of the existing haze phenomenon in the air, wherein various types of micro-particle dust and soluble salt enter the atmosphere along with the emission of smoke, and particles are separated out after water vapor is dissipated to become one of haze pollution sources, so that in order to respond to the call of the country for treating colored smoke plumes, the smoke generated by the primary converter dust removal system needs to be subjected to whitening treatment, and the aim of reducing the emission of the white smoke plumes is fulfilled.

The main methods of various technical routes proposed and adopted at present are a flue gas heating method and a flue gas cooling method. Although the flue gas heating method can raise the temperature of the flue gas and improve the unsaturation degree of the flue gas, the absolute moisture content in the flue gas cannot be reduced, so that the flue gas heating method has an effect of eliminating the smoke plume in the season with high ambient temperature, but has a poor effect of eliminating the white smoke due to the white plume generated in the process of discharging the flue gas with low ambient temperature. The smoke temperature reduction method is to reduce the smoke temperature below the ambient temperature, and the white smoke effect of the smoke can be eliminated only under the condition that the smoke has no water mist or mist entrainment, so the white smoke removal effect is poor under the condition of temperature fluctuation or in winter.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.

The utility model also aims at providing a converter is once smart to be removed dust and flue gas and is taken off white device, and it can realize the visual nothing white smoke, further reduces dust, NO in the flue gas_x、SO_xThe harmful substances can reach-10 ℃ of the external environmentAbove, the relative humidity of the environment is below 50%, no white smoke exists all the year round, and the moisture content of the tail gas is reduced by 50%.

In order to achieve these objects and other advantages in accordance with the present invention, there is provided a converter primary fine dust removal and flue gas whitening apparatus, comprising:

the bottom of the spray tower is provided with a flue gas inlet pipe and a liquid outlet respectively, and the top of the spray tower is provided with a flue gas outlet pipe;

the white-removing device comprises a heat exchanger and a cold air pipeline, the heat exchanger is a sea wave tile-shaped plate heat exchanger, a tail gas inlet communicated with the flue gas discharge pipe is formed in the top of the heat exchanger, a condensed water outlet and a tail gas outlet communicated with a chimney are respectively formed in the bottom of the heat exchanger, the cold air pipeline penetrates through the side wall of the heat exchanger, is communicated into and out of the heat exchanger for three times from bottom to top along the axial direction to form an S-shaped cold air heat exchange pipeline, and the tail end of the cold air pipeline is communicated with the chimney;

and the water circulation system comprises a cooling tower and a circulation water tank which are communicated with each other, the cooling tower is provided with a water inlet pipeline communicated with the liquid outlet and the condensed water outlet, and the circulation water tank is provided with a water outlet pipeline communicated with the spray tower.

The converter is once smart dust removal and flue gas takes off white device still includes: the primary dust removal device for the converter comprises the converter, a flue gas pipeline connected with the converter and a primary dust removal water tank, wherein a primary venturi tube, a first venturi tube dehydrator, a secondary annular peak venturi tube, a second venturi tube dehydrator and a centrifugal dehydrator are sequentially arranged on the flue gas pipeline along the flow direction of flue gas, the tail end of the flue gas pipeline is communicated with a flue gas inlet pipe, and the first venturi tube dehydrator, the second venturi tube dehydrator and the centrifugal dehydrator are respectively provided with a water outlet and are communicated with the primary dust removal water tank.

Preferably, the circulating water tank is provided with a water replenishing port and an overflow port, and the overflow port is communicated with the primary dust removal water tank.

Preferably, the coating of spray tower inner wall has anticorrosive coating, filter layer, two-layer spraying layer, two-layer defogging layer and defroster washing layer have set gradually from bottom to top along the axis direction in the spray tower, the filter screen is installed to the filter layer, the defroster washes the layer and sprays layer department and installs the shower, the shower passes through the spray pump and connects the outlet conduit in circulating water pond, remove fog layer department and install the defroster.

Preferably, the wave tile-shaped plate heat exchanger comprises a plurality of stacked wave tile-shaped heat exchange plate sheets, flow channel holes are formed in the end portions of the heat exchange plate sheets, sealing grooves are formed in the peripheries of the heat exchange plate sheets, sealing rubber pads are adhered in the sealing grooves, the heat exchange plate sheets are aligned in a positioning mode through an upper guide rod and a lower guide rod, the corrugated directions of the adjacent heat exchange plate sheets are opposite, contact points are mutually supported, and cavities between the adjacent heat exchange plates form inner cavity heat exchange flow channels communicated with a tail gas inlet.

Preferably, the heat exchange plates are made of 2205 stainless steel materials, cleaning spray pipes are arranged among the heat exchange plates, and solid atomizing nozzles are arranged on the cleaning spray pipes.

Preferably, the head end of the cold air pipeline is connected with an air cooler, and a variable frequency motor is installed in the air cooler.

Preferably, a cooling pump is arranged in the cooling tower, a filter is connected between the liquid outlet and the water inlet pipeline of the cooling tower, the filter comprises a tank body, a plurality of layered filter materials are filled in the tank body, and the filter materials comprise one or more of gravel, quartz sand, magnetite, anthracite, granular activated carbon, KDF and granular porous ceramic.

Preferably, a cyclone dehydrator, a dust removal fan and a three-way valve set are sequentially connected between the flue gas discharge pipe and the tail gas inlet, and the three-way valve set is respectively communicated with the flue gas discharge pipe, the tail gas inlet, a gas cabinet and a diffusion chimney.

The utility model discloses at least, include following beneficial effect:

firstly, the utility model discloses utilize spray column and dehydrator to cool down again and the fine dust removal is handled the flue gas, recycle and take off white device and take off white the processing to the flue gas, the dry air after the heating mixes at the end of chimney with the flue gas after the cooling dehydration, make the wet percentage of flue gas and relative humidity after mixing reduce greatly, thereby reduced the dew point temperature of evacuation flue gas, make the evacuation flue gas can not reach dew point temperature in the very short time after discharging, tail gas moisture content can not condense into water smoke, and then reach the external environment more than-10 ℃, there is not white smoke all the year below the environmental relative humidity 50%, tail gas moisture content reduces 50% effect;

secondly, the utility model discloses utilize wave tile type plate heat exchanger, it adopts the all-welded technology structure, and the structure is special, and whole board heat transfer can be adjusted the board interval freely, and the heat transfer effect improves about 30% compared with traditional plate heat exchanger, and the space between board is great relatively, has greatly reduced the jam probability, also makes things convenient for the later stage to wash, and special stainless steel corrosion resistant material makes simultaneously, can be able to bear or endure dilute sulphuric acid, hydrochloric acid gas etc. effectively solve the corrosion problem;

third, the utility model discloses set up the heat exchanger, the environment dry air after the heating can regard as heat recovery to utilize, sets up water circulating system in addition, and the shower water of defroster, the shower water of spray tower and the comdenstion water etc. in the heat exchanger are through the filtration processing back, return to the circulation pond through the cooling tower and retrieve and recycle, reduce the replenishment of new water, and the water economy resource reduces the cost of enterprises.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a process flow diagram of a technical solution of the present invention;

fig. 2 is a schematic structural view of the spray tower of the present invention;

fig. 3 is a schematic structural view of the whitening device of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

As shown in fig. 1-3, the utility model provides a converter is a smart dust removal and flue gas takes off white device, include:

the spray tower 100 is provided with a flue gas inlet pipe 101 and a liquid outlet 102 at the bottom, and a flue gas outlet pipe 103 is arranged at the top of the spray tower 100;

the white-removing device 200 comprises a heat exchanger 201 and a cold air pipeline 202, wherein the heat exchanger 201 is an ocean wave tile-shaped plate heat exchanger 201, a tail gas inlet 203 communicated with the flue gas discharge pipe 103 is formed in the top of the heat exchanger 201, a condensed water outlet 204 and a tail gas outlet 205 communicated with a chimney 206 are respectively formed in the bottom of the heat exchanger 201, the cold air pipeline 202 penetrates through the side wall of the heat exchanger 201, is communicated into and out of the heat exchanger 201 for three times from bottom to top along the axial direction to form an S-shaped cold air heat exchange pipeline, and the tail end of the cold air pipeline 202 is communicated with the chimney;

and the water circulation system 300 comprises a cooling tower 301 and a circulation water tank 302 which are communicated with each other, wherein the cooling tower 301 is provided with a water inlet pipeline communicated with the liquid outlet 102 and the condensed water outlet 204, and the circulation water tank 302 is provided with a water outlet pipeline communicated with the spray tower 100. The utility model discloses a flue gas discharge pipe 103 of spray tower 100 with the tail gas import 203 of heat exchanger 201 communicates, and chimney 206 is connected to the tail gas export 205 of heat exchanger 201, and the flue gas gets into heat exchanger 201 and cools down and dehydration after cooling down and the fine dust removal through spray tower 100, heat exchanger 201 is wave tile type plate heat exchanger 201, and it is formed by stacking a plurality of wave tile shape heat transfer slab, and the ripple opposite direction of adjacent heat transfer slab, the cavity that forms between the adjacent ripple forms inner chamber heat transfer runner, inner chamber heat transfer runner both ends are connected respectively tail gas import 203 and tail gas export 205; the cold air pipeline 202 horizontally enters and penetrates out of the heat exchanger 201 from the side wall of the heat exchanger 201, horizontally penetrates in and penetrates out of the heat exchanger 201 again after being vertically bent upwards, the cold air pipeline 202 vertically bends upwards again and then penetrates in and penetrates out of the heat exchanger 201 for the third time, and finally the tail end of the pipeline is introduced into a chimney 206 to form an S-shaped cold air heat exchange flow channel; the cooling tower 301 collects demister condensed water, demister spray water, spray layer spray water flowing out of the liquid outlet 102 and heat exchanger 201 condensed water discharged from the condensed water outlet 204, and after filtering and cooling the recovered water, the recovered water is introduced into the circulating water tank 302 for recycling, and the spray tower 100 is connected with the circulating water tank 302 to provide spray water for the spray tower 100. During the flue gas whitening treatment, follow the flue gas inlet pipe 101 of spray column 100 bottom gets into, and the flue gas upwards volatilizees from bottom to top, filters, sprays cooling, defogging processing in proper order, reachs the flue gas discharge pipe 103 at spray column 100 top, then through whirl dehydrator, dust exhausting fan and three-way valve group, by tail gas import 203 gets into the inner chamber heat transfer runner of heat exchanger 201, the flue gas gets into chimney 206 after the cold wind heat transfer cooling in with cold air duct 202 in the inner chamber heat transfer runner, cold air duct 202 is ventilated in after the heat transfer heating equally in chimney 206, and the flue gas mixes with the cold wind after the heating in chimney 206, and the wet percentage of flue gas and relative humidity after the mixture greatly reduced, hardly reaches dew point temperature in the very short time after discharging to reach the mesh of subducing white cigarette. Primary fine dust removal and flue gas of converter take off white device utilizes spray column 100 to cool down and the fine dust removal processing once more to dust removal flue gas, then further cools down the dehydration through heat exchanger 201 to the flue gas, flue gas and cold wind after the heat transfer processing are in chimney 206 end mixes, and the moisture content of greatly reduced mixed flue gas can not reach dew point temperature in the very short time after the flue gas discharges, and tail gas moisture content can not condense into water smoke to reach external environment more than-10 ℃, the following no white cigarette all the year of environment relative humidity 50%, tail gas moisture content reduces 50% effect, and the environment dry air after the heating in addition can regard as heat recovery and utilize, sets up water circulating system, makes water recovery recycle, resources are saved, reduce cost.

As shown in fig. 1, the primary fine dust removal and smoke whitening device of the converter further comprises: the primary converter dust removal device 400 comprises a converter 401, a flue gas pipeline connected with the converter, and a primary dust removal water tank 402, wherein the flue gas pipeline is sequentially provided with a primary venturi tube 403, a first venturi tube dehydrator 404, a secondary annular peak venturi tube 405, a second venturi tube dehydrator 406 and a centrifugal dehydrator 407 along the flow direction of flue gas, the tail end of the flue gas pipeline is communicated with a flue gas inlet pipe 101, and the first venturi tube dehydrator 404, the second venturi tube dehydrator 406 and the centrifugal dehydrator 407 are provided with water outlets and are communicated with the primary dust removal water tank 402. The converter primary dust removal device adopts a traditional OG method, utilizes the principles of gravity settling, centrifugation, filtration, static electricity and the like to separate gas and dust, and carries out primary dust removal treatment on the flue gas discharged from the converter, and the primary dust removal water tank 402 is used for collecting water removed from the primary dehydrator 404, the secondary dehydrator 406 and the centrifugal dehydrator 407.

In another technical solution, as shown in fig. 1, the circulation water tank 302 is provided with a water replenishing opening and an overflow opening, and the overflow opening is communicated with the primary dust removal water tank 402. The circulating water tank 302 is provided with an overflow port, so that the recovered water can be recovered to the primary dust removal water tank 402 after overflowing, the supplement of new water is reduced, and a large amount of water is saved for enterprises; meanwhile, a water replenishing port is arranged to replenish new water, nitrate, sulfate, calcium ions and the like in the recovered water are considered, and a descaling agent and the like can be added into the circulating water pool 302 through the water replenishing port, so that the purposes of descaling and balancing the pH value of circulating water are achieved.

In another technical scheme, as shown in fig. 1 and 2, the inner wall of the spray tower 100 is coated with an anticorrosive coating, a filter layer 104, two layers of spray layers 105, two layers of defogging layers 106 and a defogger washing layer 107 are sequentially arranged in the spray tower 100 from bottom to top along the axis direction, a filter screen is installed on the filter layer, a spray pipe is installed at the defogger washing layer and the spray layers, the spray pipe is connected with the water outlet pipeline of the circulating water tank 302 through a spray pump 303, and a defogger is installed at the defogging layer. Spray tower 100 sets up filter layer, two-layer, two-layer defogging layer and defroster in the tower and washes the layer, the filter layer can filter large granule material in the flue gas, prevents to block up equipment, spray layer and defogging layer and cool down again and the fine dust removal processing to the flue gas, the defroster washes the layer and can in time wash the defroster, guarantees equipment safety and stability's operation.

In another technical scheme, the wave tile-shaped plate heat exchanger 201 comprises a plurality of stacked wave tile-shaped heat exchange plates, flow channel holes are formed in the end portions of the heat exchange plates, seal grooves are formed in the peripheries of the heat exchange plates, seal rubber pads are bonded in the seal grooves, the heat exchange plates are aligned in a positioning mode through an upper guide rod and a lower guide rod, the corrugated directions of the adjacent heat exchange plates are opposite, contact points are mutually supported, and cavities between the adjacent heat exchange plates form inner cavity heat exchange flow channels communicated with a tail gas inlet 203. Wave tile type plate heat exchanger 201, the structure is special, adopts wave tile shape heat transfer slab, and the space between the board is great relatively, but greatly reduced blocks up the probability, makes things convenient for the later stage to wash, and whole board heat transfer simultaneously can freely adjust the board interval, and the heat transfer effect compares with traditional plate heat exchanger 201 and improves about 30%.

In another technical scheme, the heat exchange plates are made of 2205 stainless steel materials, cleaning spray pipes are arranged among the heat exchange plates, and solid atomizing nozzles are arranged on the cleaning spray pipes. The heat exchange plate is made of special stainless steel corrosion-resistant materials, can resist dilute sulfuric acid, hydrochloric acid gas and the like, and effectively solves the corrosion problem; the cleaning spray pipe is arranged, when the resistance of the smoke side of the heat exchanger 201 reaches a design value (400Pa), the cleaning spray pipe is opened, the solid atomizing nozzles are adopted, and the cleaning mode is that the layered and segmented cleaning is controlled through the electromagnetic valve according to the heat exchange area of the heat exchanger 201.

In another technical scheme, as shown in fig. 1 and fig. 3, the head end of the cold air duct 202 is connected with an air cooler 207, and a variable frequency motor is installed in the air cooler 207. The air cooler 207 adopts variable frequency motor to carry out frequency conversion regulation and control, and the amount of wind of fan is the device full load amount of wind, and along with the change of weather, ambient air's temperature and atmospheric humidity all can change, can take off white visual effect according to the change and the flue gas of these external factors during the use, through the height of artificial regulation frequency conversion power to reach best and take off white visual effect.

In another technical scheme, as shown in fig. 1, a cooling pump 304 is arranged in the cooling tower 301, a filter 305 is connected between the liquid outlet 102 and a water inlet pipeline of the cooling tower 301, the filter 305 includes a tank body, a plurality of layered filter materials are filled in the tank body, and the filter materials include one or more of gravel, quartz sand, magnetite, anthracite, granular activated carbon, KDF and granular porous ceramic. The filter 305 is arranged, so that the pipeline can be prevented from being blocked, and the safe and stable operation performance of the equipment is improved.

In another technical scheme, as shown in fig. 1, a cyclone dehydrator 110, a dust removal fan 111 and a three-way valve set 112 are sequentially connected between the flue gas discharge pipe 103 and the tail gas inlet 203, and the three-way valve set 112 is respectively communicated with the flue gas discharge pipe 103, the tail gas inlet 203, a gas holder 113 and a diffusion chimney 114. The flue gas is cooled again and subjected to fine dust removal treatment through the spray tower 100, the cyclone dehydrator 110 and the dust removal fan 111, and then enters the white removal device 200 through the three-way valve to be subjected to white removal; the converter gas can also directly enter the gas tank 113 through a three-way valve, and the three-way valve set 112 is arranged, so that the operation is simple and convenient, and the process flow can be freely adjusted according to the actual situation.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (9)

1. A smart dust removal of converter and flue gas strip white device, its characterized in that includes:

the bottom of the spray tower is provided with a flue gas inlet pipe and a liquid outlet respectively, and the top of the spray tower is provided with a flue gas outlet pipe;

the white-removing device comprises a heat exchanger and a cold air pipeline, the heat exchanger is a sea wave tile-shaped plate heat exchanger, a tail gas inlet communicated with the flue gas discharge pipe is formed in the top of the heat exchanger, a condensed water outlet and a tail gas outlet communicated with a chimney are respectively formed in the bottom of the heat exchanger, the cold air pipeline penetrates through the side wall of the heat exchanger, is communicated into and out of the heat exchanger for three times from bottom to top along the axial direction to form an S-shaped cold air heat exchange pipeline, and the tail end of the cold air pipeline is communicated with the chimney;

and the water circulation system comprises a cooling tower and a circulation water tank which are communicated with each other, the cooling tower is provided with a water inlet pipeline communicated with the liquid outlet and the condensed water outlet, and the circulation water tank is provided with a water outlet pipeline communicated with the spray tower.

2. The primary fine dust removal and flue gas whitening removal device of the converter according to claim 1, further comprising: the primary dust removal device for the converter comprises the converter, a flue gas pipeline connected with the converter and a primary dust removal water tank, wherein a primary venturi tube, a first venturi tube dehydrator, a secondary annular peak venturi tube, a second venturi tube dehydrator and a centrifugal dehydrator are sequentially arranged on the flue gas pipeline along the flow direction of flue gas, the tail end of the flue gas pipeline is communicated with a flue gas inlet pipe, and the first venturi tube dehydrator, the second venturi tube dehydrator and the centrifugal dehydrator are respectively provided with a water outlet and are communicated with the primary dust removal water tank.

3. The primary fine dust removal and flue gas whitening removal device of the converter according to claim 2, wherein the circulating water tank is provided with a water replenishing port and an overflow port, and the overflow port is communicated with the primary dust removal water tank.

4. The primary fine dust removal and flue gas whitening device for the converter according to claim 1, wherein an anticorrosive coating is coated on the inner wall of the spray tower, a filter layer, two spray layers, two defogging layers and a defogger washing layer are sequentially arranged in the spray tower from bottom to top along the axis direction, a filter screen is installed on the filter layer, spray pipes are installed at the defogger washing layer and the spray layers, the spray pipes are connected with a water outlet pipeline of the circulating water tank through a spray pump, and a defogger is installed at the defogging layer.

5. The primary fine dust removal and flue gas whitening device for the converter according to claim 1, wherein the sea wave tile-shaped plate heat exchanger comprises a plurality of stacked sea wave tile-shaped heat exchange plates, flow passage holes are formed in the end portions of the heat exchange plates, seal grooves are formed in the peripheries of the heat exchange plates, seal rubber gaskets are adhered in the seal grooves, the heat exchange plates are aligned in a positioned mode through an upper guide rod and a lower guide rod, the corrugation directions of adjacent heat exchange plates are opposite, contact points are mutually supported, and inner cavity heat exchange flow passages communicated with a tail gas inlet are formed in cavities between the adjacent heat exchange plates.

6. The primary fine dust removal and flue gas whitening removal device for the converter according to claim 5, wherein the heat exchange plates are made of 2205 stainless steel materials, cleaning spray pipes are arranged among the heat exchange plates, and solid atomizing nozzles are arranged on the cleaning spray pipes.

7. The primary fine dust removal and flue gas whitening removal device of the converter according to claim 1, wherein an air cooler is connected to the head end of the cold air duct, and a variable frequency motor is installed in the air cooler.

8. The primary fine dust removal and flue gas whitening removal device for the converter according to claim 1, wherein a cooling pump is arranged in the cooling tower, a filter is connected between the liquid discharge port and a water inlet pipeline of the cooling tower, the filter comprises a tank body, and a plurality of layered filter materials are filled in the tank body.

9. The primary fine dust removal and flue gas whitening removal device for the converter according to claim 1, wherein a cyclone dehydrator, a dust removal fan and a three-way valve set are sequentially connected between the flue gas discharge pipe and the tail gas inlet, and the three-way valve set is respectively communicated with the flue gas discharge pipe, the tail gas inlet, a gas holder and a diffusion chimney.

Images