CN114259831B - Flue gas purifying equipment and flue gas purifying method for steel plant - Google Patents
Flue gas purifying equipment and flue gas purifying method for steel plant Download PDFInfo
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- CN114259831B CN114259831B CN202111541208.0A CN202111541208A CN114259831B CN 114259831 B CN114259831 B CN 114259831B CN 202111541208 A CN202111541208 A CN 202111541208A CN 114259831 B CN114259831 B CN 114259831B
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Abstract
The invention discloses a flue gas purifying device for a steel plant, which comprises a device host, a water tank, a water pump and a flue gas capturing cover, wherein the water tank is arranged on the device host: the equipment host comprises an equipment main shell, a bracket, a plug-in partition board, a catalyst plate and an exhaust fan, wherein the equipment main shell is erected on the bracket, and a plurality of plug-in partition boards with two sides being relatively staggered and plugged are used for dividing the inner cavity of the equipment main shell into a reciprocating and turning-back flue; the bottom plate of the plug-in partition board is provided with a plurality of spray heads, and the water pipe connector is communicated with the spray heads through pipelines; an air inlet and a water return pipe joint are arranged at the bottom of the inner cavity of the main shell of the equipment; a catalyst plate and an exhaust fan are arranged above the top plug-in partition plate in the inner cavity of the main shell of the equipment; the flue gas trapping cover is communicated with the air inlet through an air pipe; the water return pipe joint is communicated with the water tank through a water pipe, and after the water tank is filtered, the water pump pumps alkaline solution to all the water pipe joints. According to the flue gas purifying equipment and the flue gas purifying method for the steel plant, the hot smoke dust is sprayed, so that dust and harmful gases are removed, and the flue gas purifying effect is improved.
Description
Technical Field
The invention relates to the technical field of flue gas treatment of steel plants, in particular to flue gas purifying equipment and a flue gas purifying method for steel plants.
Background
In the process of tapping the blast furnace, blocking the tap hole and flowing molten iron, a large amount of high-temperature smoke and smoke dust can be generated, and dust raising points of the high-temperature smoke and the smoke dust are mainly distributed at the tap hole, the tap water tank and the like. The discharge amount of the flue gas in the cast house is large, the dust concentration in the post is high, and the flue dust is in a diffusion state due to the high-temperature flue gas, so that the flue dust is extremely easy to escape. In addition, the blast furnace has a large number of tapping times and long tapping time, SO that the large area in a tapping yard is polluted by smoke dust, heat radiation, CO, SO2 and other harmful gases, the production operation conditions are bad, and the physical health of workers is seriously influenced. Meanwhile, a large amount of smoke and dust are diffused into the atmosphere from the periphery of a factory building and the roof, and environmental pollution is caused in the factory. Therefore, under the situation that the current environmental protection requirements are becoming strict, effective measures must be taken to treat the ventilation and dust removal problems of blast furnace casting houses so as to improve the working environment and prevent smoke and dust from escaping.
The existing flue gas purification of the blast furnace cast house is mostly carried out by using a bag-type dust remover, and the bag-type dust remover adopts a design form of box middle air inlet, ash bucket air inlet and off-line ash removal. When the bag type dust collector adopts the air inlet mode of ash bucket air inlet, flue gas can impact and bring up the dust that has deposited in the ash bucket, increases the dust concentration of dust collector filtration space, aggravates the secondary back mixing effect of dust, increases the filtration load of filter bag simultaneously, aggravates the erosive wear to the filter bag, and easy damage life is low. In addition, the bag-type dust collector can only intercept particle dust and can not remove harmful gases in the flue gas, so that environmental pollution is caused.
Therefore, there is a need to develop a flue gas cleaning apparatus and a flue gas cleaning method for steel plants.
Disclosure of Invention
The invention aims to provide a flue gas purifying device for a steel plant, which adopts a spraying mode to carry out hot smoke dust, remove dust and harmful gas and improve the flue gas purifying effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a flue gas purifying device for a steel plant, which comprises a device host, a water tank, a water pump and a flue gas capturing cover, wherein the water tank is arranged on the device host:
the equipment host comprises an equipment main shell, a support, an inserting partition board, a catalyst plate and an exhaust fan, wherein the equipment main shell is erected on the support, inserting plate long holes are formed in two opposite side walls of the equipment main shell, the number of the inserting plate long holes is multiple, the two side walls are arranged in a staggered mode, the inserting partition board is inserted into an inner cavity of the equipment main shell from the inserting plate long holes, the two side walls of the inserting partition board are in contact with the inner side wall of the equipment main shell, the length of the inserting partition board is smaller than that of the inner cavity of the equipment main shell, and the inserting partition board divides the inner cavity of the equipment main shell into a reciprocating and folded flue; the bottom plate of the plug-in partition plate is provided with a plurality of spray heads, the outer end of the plug-in partition plate is provided with a water pipe joint, and the water pipe joint is communicated with the spray heads through a pipeline; the bottom of the inner cavity of the main shell of the equipment is provided with an initial spraying cavity, the side wall of the initial spraying cavity is provided with an air inlet, and the bottom of the initial spraying cavity is provided with a collecting hopper and is communicated with a water return pipe joint; the catalyst plate and the exhaust fan are arranged above the plug-in partition plate at the top of the inner cavity of the main shell of the equipment;
the flue gas capturing cover is arranged at a dust raising point of a cast house and is communicated to the air inlet through an air pipe; and the water return pipe joint is communicated with the water tank through a water pipe, and after the water tank is filtered, the water pump pumps alkaline solution to each water pipe joint.
Further, the plug-in mounting partition plate further comprises a sandwich plate main body, an outer flange cover and built-in water pipes, the built-in water pipes are arranged in parallel in the sandwich plate main body, a plurality of water outlet holes which are distributed at equal intervals are formed in the bottom surface of the built-in water pipes, the spray heads are installed on the water outlet holes, the outer flange cover is vertically connected to the outer end of the sandwich plate main body, and the outer flange cover is connected to the outer side wall of the equipment main shell through bolts.
Further, the plug-in partition plate further comprises a partition plate, wherein the partition plate is vertically and fixedly connected to the bottom surface of the sandwich plate main body, and a plurality of partition plates are parallel and spaced between two adjacent built-in water pipes; the bottom surface of the partition plate contacts the top surface of the lower-layer plug-in partition plate.
Further, the length of the partition plate is larger than that of the sandwich plate main body and is abutted against the opposite inner side wall of the equipment main shell.
Further, the outer surfaces of the sandwich plate main body and the partition plates are coated with wear-resistant and corrosion-resistant layers.
Further, the plug-in partition plate further comprises a sealing base plate, and the sealing base plate is arranged between the outer flange cover and the outer wall of the equipment main shell.
Furthermore, the spray header is obliquely arranged, and the water outlet direction of the spray header is reverse to the air supply direction of the flue.
Further, a demister plate is provided in the main housing cavity of the apparatus and below the catalyst plate.
Further, the novel air conditioner further comprises a rain shield cover, wherein the rain shield cover is arranged above the exhaust fan, the rain shield cover is arranged in a dome shape, and air outlets are formed in the periphery of the rain shield cover.
The invention also discloses a flue gas purification method for the steel plant, which comprises the steps of extracting flue gas, spraying dust fall, demisting, removing CO and exhausting air, wherein limestone water is adopted in the step of spraying dust fall to spray dust fall and remove SO on the flue gas in the flue which is returned to and reciprocated by the limestone water in the step of spraying dust fall 2 And (3) gas.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention relates to a flue gas purifying device for a steel plant, which is characterized in that a plurality of inserting plate long holes are formed in two opposite side walls of a main shell of the device in a staggered manner, and an inserting partition plate capable of spraying alkaline solution is inserted into the inserting partition plate to form a reciprocating and folding flue, SO that the spraying length is increased in a limited space, wet dust removal is performed, solid particles are removed while the flue gas is cooled, and the alkaline solution can also be used for SO (sulfur dioxide) in the flue gas 2 Harmful gases are effectively removed. The plug-in partition board installed in a plug-in mode is arranged in a modularized mode, so that the plug-in partition board is convenient to detach, clean and maintain, the equipment is guaranteed to run at high efficiency all the time, and the service life of the equipment is prolonged. By arranging the catalyst plate, CO harmful gas can be catalytically oxidized into CO at normal temperature 2 . The flue gas purifying device for the steel plant adopts a spraying mode to carry out hot flue dust, removes dust and harmful gas, and improves the flue gas purifying effect.
In addition, through set up hidden built-in water pipe in the sandwich plate main part, the shower head is arranged to the equipartition of being convenient for, has increased the structural strength and the rigidity of cartridge baffle simultaneously, has reduced the deformation influence. By the arrangement of the partition plates, the flat flue can be divided into a plurality of flatThe flue is moved for the flue gas flows evenly, has avoided the flow dead angle in corner position, and the height of division board is the height of flue just plays the interval adjacently the effect of sandwich panel main part simultaneously, forms the gusset and supports and improve structural strength. The length through the division board is greater than the sandwich panel main part and butt is on the opposite inside wall of equipment main part casing, can play the locate function, has guaranteed the width of vertical direction flue. Through the spray header that inclines to set up, can reverse flue gas wind stream sprays vaporific spray, contacts fully with the flue gas, absorbs SO 2 The harmful gas effect is good, can reverse rivers simultaneously, is convenient for alkaline solution backward flow collection. Through the setting of defroster board, can condense the water vapor in the normal atmospheric temperature flue gas after purifying and collect, reduce the water content in the exhaust, reduce the adverse effect to the catalyst board.
The flue gas purification method of the steel plant sprays and dust falls the flue gas in the flue with the reciprocating return, increases the spraying length in a limited space, ensures more complete spraying contact and good dust falling effect, and can remove CO and SO 2 Harmful gas and thoroughly purified.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of the composition structure of a flue gas purifying device for a steel plant;
FIG. 2 is a schematic diagram showing a schematic diagram of a main unit of the flue gas purifying apparatus for steel works in a front view and a cross-sectional structure;
FIG. 3 is a schematic view showing the bottom structure of an inserted partition plate of the flue gas purifying device for the steel plant;
FIG. 4 is a schematic diagram showing the front view of the slot of the insert plate of the main casing of the equipment of the present invention;
FIG. 5 is a schematic flow chart of the flue gas purifying method in the steel plant.
Reference numerals illustrate: 1. a device main housing; 101. an air inlet; 102. an initial spray chamber; 103. a plugboard slot hole; 104. a backwater pipe joint; 105. an end baffle; 106. fastening the threaded hole; 2. a bracket; 3. inserting a partition board; 301. an outer flange cover; 302. a partition plate; 303. a spray header; 304. a water pipe joint; 305. a built-in water pipe; 306. a sealing backing plate; 4. a demister plate; 5. a catalyst plate; 6. a discharge fan; 7. a rain shield; 8. a water tank; 9. a water pump; 10. a flue gas collecting cover.
Detailed Description
The core of the invention is to provide a flue gas purifying device and a flue gas purifying method for steel plants, which adopt a spraying mode to carry out hot smoke dust, remove dust and harmful gas and improve the flue gas purifying effect.
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to the drawings, FIG. 1 is a schematic view of the constitution of a flue gas purifying apparatus for a steel plant according to the present invention; FIG. 2 is a schematic diagram showing a schematic diagram of a main unit of the flue gas purifying apparatus for steel works in a front view and a cross-sectional structure; FIG. 3 is a schematic view showing the bottom structure of an inserted partition plate of the flue gas purifying device for the steel plant; FIG. 4 is a schematic diagram showing the front view of the slot of the insert plate of the main casing of the equipment of the present invention; FIG. 5 is a schematic flow chart of the flue gas purifying method in the steel plant.
In one embodiment, as shown in fig. 1 to 4, a flue gas cleaning device for a steel plant comprises a device main unit, a water tank 8, a water pump 9 and a flue gas capturing cover 10.
The device host comprises a device main shellThe device comprises a body 1, a bracket 2, an inserted partition plate 3, a catalyst plate 5 and an exhaust fan 6. The cuboid-shaped equipment main shell 1 is erected on the support 2, two opposite side walls of the equipment main shell 1 are provided with inserting plate long holes 103, the number of the inserting plate long holes 103 is multiple, the two side walls are arranged in a staggered mode, and the inserting partition plate 3 is inserted into the inner cavity of the equipment main shell 1 from the inserting plate long holes 103 and is fixedly sealed at the root. The two side walls of the plug-in partition plates 3 are contacted with the inner side wall of the equipment main shell 1, the length of the plug-in partition plates is smaller than the length of the inner cavity of the equipment main shell 1, and the inner cavity of the equipment main shell 1 is divided into a reciprocating and folding flue by the multiple plug-in partition plates 3. The bottom plate of the plug-in partition plate 3 is provided with a plurality of spray headers 303, the outer end of the plug-in partition plate 3 is provided with a water pipe joint 304, and the water pipe joint 304 is communicated to the spray headers 303 through a pipeline. The bottom of the inner cavity of the main shell 1 of the equipment is provided with an initial spraying cavity 102, and the flue gas is firstly pumped into the initial spraying cavity 102. An air inlet 101 is formed in the side wall of the initial spraying cavity 102, and a collecting hopper is arranged at the bottom of the initial spraying cavity 102 and is communicated with a water return pipe joint 104. The inner cavity of the main shell 1 of the equipment is provided with a catalyst plate 5 and an exhaust fan 6 above the inserted partition plate 3 at the top. The catalyst plate 5 adopts palladium-gold series catalyst, and can catalyze and oxidize CO harmful gas into CO at normal temperature 2 。
The flue gas trapping cover 10 is arranged at a dust raising point of a cast house, and the flue gas trapping cover 10 is communicated to the air inlet 101 through an air pipe. The return water pipe joint 104 is communicated with the water tank 8 through a water pipe, and after filtering, the water pump 9 pumps alkaline solution to each water pipe joint 304. The alkaline solution not only can reduce dust, but also can reduce SO in flue gas 2 Harmful gases are effectively removed.
Through set up a plurality of picture peg slot holes 103 of dislocation setting and cartridge baffle 3 that can spray alkaline solution on two opposite lateral walls of equipment main casing 1, form the flue of reciprocating turn back, increased spray length in limited space, wet dedusting, get rid of solid particulate matter for flue gas cooling simultaneously, alkaline solution can also be to SO in the flue gas 2 Harmful gases are effectively removed. The plug-in partition board 3 installed in a plug-in mode is arranged in a modularized mode, so that the plug-in partition board is convenient to detach, clean and maintain, the equipment is guaranteed to run at high efficiency all the time, and the service life of the equipment is prolonged. By providing the catalyst plate 5, the catalyst can be used inCatalytic oxidation of CO harmful gas to CO at normal temperature 2 . The flue gas purifying device for the steel plant adopts a spraying mode to carry out hot flue dust, removes dust and harmful gas, and improves the flue gas purifying effect.
In one embodiment of the present invention, as shown in fig. 2, the cross section of the reciprocally turned-back flue is a rectangular shape with a length of 2000 mm and a height of 100 mm, and the length of the reciprocally turned-back flue is 20 m. Can obtain better purification solid particles, and can meet the level of environmental protection requirement without post-filtration.
In one embodiment of the present invention, as shown in fig. 2 to 4, the insert spacer 3 further includes a sandwich plate body, an outer flange cover 301, and a plurality of built-in water pipes 305, wherein the built-in water pipes 305 are disposed in parallel in the sandwich plate body, and a length direction of the built-in water pipes 305 is disposed along an insert direction of the insert spacer 3. A plurality of equally spaced water outlet holes are formed in the bottom surface of the built-in water pipe 305, the spray header 303 is installed on the water outlet holes, the outer flange cover 301 is vertically welded to the outer end of the sandwich plate main body, and the outer flange cover 301 is connected to the fastening threaded holes 106 of the outer side wall of the equipment main shell 1 through bolts for locking installation.
Specifically, as shown in fig. 2 and 3, the plug-in separator 3 further includes a separator 302, the separator 302 being welded vertically to the bottom surface of the sandwich panel body, and a plurality of separators 302 being spaced in parallel between two adjacent built-in water pipes 305. The bottom surface of the partition plate 302 contacts the top surface of the lower-layer cartridge partition plate 3.
Specifically, as shown in fig. 2 and 3, the partition plate 302 has a length larger than that of the sandwich plate body and abuts against the opposite inner side walls of the apparatus main casing 1. The end baffle 105 is arranged opposite to the bottom-layer plug-in partition plate 3, the end baffle 105 is welded on the inner wall of the equipment main shell 1, and the end baffle 105 carries the outer end of the partition plate 302.
Specifically, as shown in fig. 2 and 3, the outer surfaces of the sandwich panel body and the partition plate 302 are coated with a wear-resistant and corrosion-resistant layer. The wear-resistant and corrosion-resistant layer is coated by polytetrafluoroethylene with a corrosion-resistant smooth surface. Through the cladding of polytetrafluoroethylene, not only can play corrosion-resistant effect, as the slide face of top layer division board 302 moreover, can reduce frictional resistance, the dismouting cartridge baffle 3 of being convenient for.
Specifically, as shown in fig. 2 and 3, the plug-in partition 3 further includes a sealing gasket 306, and the sealing gasket 306 is disposed between the outer flange cover 301 and the outer wall of the apparatus main casing 1.
Specifically, as shown in fig. 2 and 3, the shower head 303 is inclined, and the water outlet direction of the shower head 303 is reverse to the flue gas supply direction.
Through set up hidden built-in water pipe 305 in the sandwich plate main part, the shower head 303 is arranged to the equipartition of being convenient for, has increased the structural strength and the rigidity of cartridge baffle 3 simultaneously, has reduced the deformation influence. Through the setting of division board 302, can cut apart flat flue into a plurality of parallel flues for the flue gas flows evenly, has avoided the flow dead angle of corner position, and the height of division board 302 is the height of flue just plays the interval adjacently the effect of sandwich panel main part simultaneously forms the gusset and supports improvement structural strength. The length of the partition plate 302 is larger than that of the sandwich plate main body and the partition plate main body is abutted to the opposite inner side wall of the equipment main shell 1, so that the positioning effect can be achieved, and the width of the vertical flue is ensured. Through the spray header 303 which is obliquely arranged, mist spray can be sprayed by reverse smoke wind flow, and the mist spray contacts with smoke fully to absorb SO 2 The harmful gas effect is good, can reverse rivers simultaneously, is convenient for alkaline solution backward flow collection.
In one embodiment of the present invention, as shown in fig. 2, the flue gas cleaning apparatus for steel works of the present invention further includes a demister plate 4, and the demister plate 4 is disposed in the inner cavity of the apparatus main casing 1 and below the catalyst plate 5.
Through the setting of defroster board 4, can condense the water vapor of collecting in the normal atmospheric temperature flue gas after purifying, reduce the water content in the exhaust, reduce the adverse effect to catalyst board 5.
In a specific embodiment of the present invention, as shown in fig. 2, the flue gas cleaning apparatus for a steel plant of the present invention further includes a rain shield 7, wherein the rain shield 7 is covered above the exhaust fan 6, the rain shield 7 is a dome, and air outlets are provided around the dome.
In a specific embodiment of the present invention, as shown in fig. 2, a sand settling tank is disposed at the bottom of the water tank 8, and a return pipe connected to the return pipe joint 104 enters the main liquid storage cavity of the water tank 8 through a multi-layer filter screen, and the sand settling tank is located below the filter screen. A medicament barrel and an automatic medicament injection device are arranged beside the water tank 8, and alkaline solution components are periodically supplemented into the main liquid storage cavity.
In a specific embodiment of the present invention, as shown in fig. 2, a heat exchanger is further disposed in the main liquid storage cavity of the water tank 8, and the heat exchanger cools the alkaline solution in the main liquid storage cavity.
The invention also discloses a flue gas purifying method for the steel plant, which comprises the steps of extracting flue gas, spraying dust fall, demisting, removing CO and exhausting air as shown in figure 5. In the spraying dust falling step, limestone water is adopted to spray dust falling and SO (sulfur oxide) removal on flue gas in a flue which is folded back and forth by limestone water 2 Harmful gases. The CO removal step adopts a catalytic oxidation removal mode of a catalyst.
In the prior art, the wet dust removal is usually carried out by adopting a vertical flue to spray, and the spray travel is too short to effectively remove solid particles in the flue gas, and the flue gas purification method for the steel plant sprays and dust-falls the flue gas in the flue gas which is returned and reciprocated, SO that the spray length is increased in a limited space, the spray contact is more sufficient, the dust-falling effect is good, and the CO and SO can be removed 2 Harmful gas and thoroughly purified.
The working process of the flue gas purifying equipment for the steel plant comprises the following steps: the flue gas of the dust raising point of the cast house is sucked by the flue gas collecting hood 10 and is conveyed to the initial spraying cavity 102 through the air pipe and the air inlet 101, the bottom spraying head 303 of the inserted partition plate 3 above the inside of the initial spraying cavity 102 sprays alkaline solution to cool and remove dust on the flue gas in the cavity, the flue gas flows upwards along the flue which is reciprocally turned back, and each section of horizontal flue is sprayed to cool and remove dust. After long-stroke spraying, the flue gas upwards sequentially passes through the demister plate 4 and the catalyst plate 5, and water vapor and CO harmful gas are further removed. Finally, the air is blown and discharged outdoors by the exhaust fan 6. The alkaline solution flowing down by spraying flows downwards layer by layer along the top surface of the sandwich panel body, finally is collected to the collecting hopper at the bottom of the initial spraying cavity 102 and flows back to the water tank 8 through the water return pipe joint 104 and the water return pipe. The water pump 9 pumps the alkaline solution to the respective water connections 304 for spraying.
According to the flue gas purifying device for the steel plant, the plurality of inserting plate long holes 103 which are arranged in a staggered mode are formed in two opposite side walls of the main shell 1 of the device, the inserting partition plates 3 which can spray alkaline solution are inserted, a reciprocating and turning-back flue is formed, the spraying length is increased in a limited space, wet dust removal is performed, solid particles are removed while the flue gas is cooled, and the alkaline solution can also be used for SO (sulfur dioxide) in the flue gas 2 Harmful gases are effectively removed. The plug-in partition board 3 installed in a plug-in mode is arranged in a modularized mode, so that the plug-in partition board is convenient to detach, clean and maintain, the equipment is guaranteed to run at high efficiency all the time, and the service life of the equipment is prolonged. By providing the catalyst plate 5, CO harmful gas can be catalytically oxidized into CO at normal temperature 2 . The flue gas purifying device for the steel plant adopts a spraying mode to carry out hot flue dust, removes dust and harmful gas, and improves the flue gas purifying effect. In addition, through set up hidden built-in water pipe 305 in the sandwich plate main part, be convenient for equipartition arranges shower head 303, increased the structural strength and the rigidity of cartridge baffle 3 simultaneously, reduced the deformation influence. Through the setting of division board 302, can cut apart flat flue into a plurality of parallel flues for the flue gas flows evenly, has avoided the flow dead angle of corner position, and the height of division board 302 is the height of flue just plays the interval adjacently the effect of sandwich panel main part simultaneously forms the gusset and supports improvement structural strength. The length of the partition plate 302 is larger than that of the sandwich plate main body and the partition plate main body is abutted to the opposite inner side wall of the equipment main shell 1, so that the positioning effect can be achieved, and the width of the vertical flue is ensured. Through the spray header 303 which is obliquely arranged, mist spray can be sprayed by reverse smoke wind flow, and the mist spray contacts with smoke fully to absorb SO 2 The harmful gas effect is good, can reverse rivers simultaneously, is convenient for alkaline solution backward flow collection. Through the setting of defroster board 4, can condense the water vapor of collecting in the normal atmospheric temperature flue gas after purifying, reduce the water content in the exhaust, reduce the adverse effect to catalyst board 5.
The invention relates to a flue gas purifying method for steel works, which is used for feeding flue gas in a flue with a reciprocating returnSpraying dust fall is carried out, the spraying length is increased in a limited space, the spraying contact is more sufficient, the dust fall effect is good, and CO and SO can be removed 2 Harmful gas and thoroughly purified.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (7)
1. The flue gas purifying device for the steel plant is characterized by comprising a device host, a water tank (8), a water pump (9) and a flue gas capturing cover (10);
the equipment host comprises an equipment main shell (1), a support (2), an inserting partition plate (3), a catalyst plate (5) and an exhaust fan (6), wherein the equipment main shell (1) is erected on the support (2), inserting plate long holes (103) are formed in two opposite side walls of the equipment main shell (1), the number of the inserting plate long holes (103) is multiple, the two side walls are arranged in a staggered mode, the inserting partition plate (3) is inserted into an inner cavity of the equipment main shell (1) from the inserting plate long holes (103), the two side walls of the inserting partition plate (3) are in contact with the inner side wall of the equipment main shell (1) and the length of the inner cavity of the equipment main shell (1), and the inserting partition plate (3) divides the inner cavity of the equipment main shell (1) into reciprocating back-and-forth flues; the bottom plate of the plug-in partition plate (3) is provided with a plurality of spray heads (303), the outer end of the plug-in partition plate (3) is provided with a water pipe joint (304), and the water pipe joint (304) is communicated with the spray heads (303) through a pipeline; the bottom of the inner cavity of the equipment main shell (1) is provided with an initial spraying cavity (102), the side wall of the initial spraying cavity (102) is provided with an air inlet (101), and the bottom of the initial spraying cavity (102) is provided with a collecting hopper and is communicated with a water return pipe joint (104); the catalyst plate (5) and the exhaust fan (6) are arranged above the plug-in partition board (3) at the top of the inner cavity of the equipment main shell (1);
the flue gas capturing cover (10) is arranged at a dust raising point of a cast house, and the flue gas capturing cover (10) is communicated to the air inlet (101) through an air pipe; the water return pipe joint (104) is communicated with the water tank (8) through a water pipe, and after the water tank (8) is filtered, the water pump (9) pumps alkaline solution to each water pipe joint (304);
the plug-in partition board (3) further comprises a sandwich board main body, an outer flange cover (301) and built-in water pipes (305), wherein a plurality of built-in water pipes (305) are arranged in parallel in the sandwich board main body, a plurality of water outlet holes which are distributed at equal intervals are formed in the bottom surface of each built-in water pipe (305), the spray heads (303) are installed on the water outlet holes, the outer flange cover (301) is vertically connected to the outer end of the sandwich board main body, and the outer flange cover (301) is connected to the outer side wall of the equipment main shell (1) through bolts;
the plug-in partition board (3) further comprises partition boards (302), wherein the partition boards (302) are vertically and fixedly connected to the bottom surface of the sandwich board main body, and a plurality of the partition boards (302) are parallel and spaced between two adjacent built-in water pipes (305); the bottom surface of the partition plate (302) contacts with the top surface of the lower-layer plug-in partition plate (3);
the length of the partition plate (302) is larger than that of the sandwich plate main body and is abutted against the opposite inner side wall of the equipment main shell (1); the end baffle plate (105) is arranged opposite to the inserting partition plate (3) at the bottommost layer, the end baffle plate (105) is welded and connected to the inner wall of the equipment main shell (1), and the end baffle plate (105) bears the outer end of the partition plate (302).
2. The flue gas cleaning apparatus for steel plants according to claim 1, wherein: the outer surfaces of the sandwich plate main body and the partition plates (302) are coated with wear-resistant and corrosion-resistant layers.
3. The flue gas cleaning apparatus for steel plants according to claim 2, wherein: the plug-in partition board (3) further comprises a sealing base plate (306), and the sealing base plate (306) is arranged between the outer flange cover (301) and the outer wall of the equipment main shell (1).
4. A flue gas cleaning apparatus for steel plants according to any one of claims 1 to 3, wherein: the spray header (303) is obliquely arranged, and the water outlet direction of the spray header (303) is reverse to the flue gas supply direction.
5. The flue gas cleaning apparatus for steel plants according to claim 1, wherein: the device also comprises a demister plate (4), wherein the demister plate (4) is arranged in the inner cavity of the device main shell (1) and is positioned below the catalyst plate (5).
6. The flue gas cleaning apparatus for steel plants according to claim 1, wherein: the novel air conditioner further comprises a rain shield (7), wherein the rain shield (7) is arranged above the exhaust fan (6), and the rain shield (7) is arranged for a dome and is provided with air outlets all around.
7. A flue gas purification method for a steel plant, characterized in that the flue gas treatment is carried out by using the flue gas purification equipment for the steel plant according to any one of the claims 1 to 6, comprising the steps of extracting flue gas, spraying dust fall, demisting, removing CO and exhausting air, wherein limestone water is adopted in the step of spraying dust fall to spray dust fall and remove SO2 gas from the flue gas in a flue which is folded back and forth by limestone water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111541208.0A CN114259831B (en) | 2021-12-16 | 2021-12-16 | Flue gas purifying equipment and flue gas purifying method for steel plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111541208.0A CN114259831B (en) | 2021-12-16 | 2021-12-16 | Flue gas purifying equipment and flue gas purifying method for steel plant |
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| KR101006615B1 (en) * | 2009-06-18 | 2011-01-07 | 한국염색기술연구소 | Offensive Odor Treatment Apparatus and Scrubber |
| CN102059031B (en) * | 2010-11-27 | 2013-06-12 | 赵艳萍 | Gas filter device |
| CN204672061U (en) * | 2015-03-25 | 2015-09-30 | 赵军 | Air purifier |
| CN206910973U (en) * | 2017-06-12 | 2018-01-23 | 多加多乳业(天津)有限公司 | Gas cleaning plant for air accumulator |
| CN108452656A (en) * | 2018-01-22 | 2018-08-28 | 广德盛源电器有限公司 | A kind of waste gas treatment equipment of aluminum alloy die casting production |
| CN208295933U (en) * | 2018-05-12 | 2018-12-28 | 宁波得水环保科技有限公司 | A kind of energy-saving type gas flare |
| CN208943825U (en) * | 2018-09-29 | 2019-06-07 | 广东新润成陶瓷有限公司 | A kind of environmental protective wetting dust-removing desulfurating apparatus |
| CN213771900U (en) * | 2020-12-14 | 2021-07-23 | 山东泰泽环保工程有限公司 | Side furnace end smoke treatment device of coke pusher |
| CN214319573U (en) * | 2020-12-30 | 2021-10-01 | 河南祥盛陶粒有限公司 | Dust remover miropowder system of recycling |
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Address after: 064000 No. 5, Yigang street, north steel logistics industry cluster area, Qian'an City, Tangshan City, Hebei Province Applicant after: Zhonghong Intelligent Technology (Hebei) Co.,Ltd. Address before: 064000 No. 5, Yigang street, north steel logistics industry cluster area, Qian'an City, Tangshan City, Hebei Province Applicant before: Xinda Intelligent Technology (Hebei) Co.,Ltd. |
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