CN113457342A - Waste gas treatment device for hot blast stove - Google Patents
Waste gas treatment device for hot blast stove Download PDFInfo
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- CN113457342A CN113457342A CN202110746058.0A CN202110746058A CN113457342A CN 113457342 A CN113457342 A CN 113457342A CN 202110746058 A CN202110746058 A CN 202110746058A CN 113457342 A CN113457342 A CN 113457342A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a hot blast stove. The waste gas treatment device based on hot-blast furnace is including heat transfer jar and washing case, the heat transfer jar erects on the mounting bracket, just the heat transfer tank bottom installs the dust removal conical disk, washing case fixed mounting is on the mounting bracket, just be provided with on the washing case and be used for carrying out the purification subassembly that filters the processing to waste gas after the heat transfer. The inclined air nozzle on the annular ring is blown into the dedusting conical disc, so that waste gas in the air guide pipe exchanges heat with water liquid in the heat exchange tank, waste heat in the waste gas is effectively recovered, annular air flow blown out by the inclined air nozzle can push the rotating plate on the rotating shaft to rotate, on one hand, the air speed of the annular air flow can be reduced, the heat exchange efficiency is improved, and on the other hand, the cleaning brush is used for cleaning a filter screen on the partition disc.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a hot blast stove.
Background
The hot blast stove is a thermodynamic machine, is widely applied in China in the end of the 20 th century 70 s, and becomes an upgrading product of an electric heat source and a traditional steam power heat source in many industries. The hot blast stove has various types and complete series, and is divided into a hand-burning furnace and a machine-burning furnace by a coal feeding mode, and is divided into a coal furnace, an oil furnace, a gas furnace and the like by fuel types.
The hot-blast furnace fuel is mostly the straw, solid fuel such as coal easily produces a large amount of smoke and dust and nitric oxide after the burning, toxic gas such as sulfur dioxide pollutes the atmosphere, produces acid rain, and straw, solid fuel such as coal are abundant easily to produce carbon monoxide simultaneously, and carbon monoxide is colorless tasteless, easily causes the stifling after the human body inhales, dies when serious.
Therefore, it is necessary to provide a new exhaust gas treatment device for a hot blast stove to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a waste gas treatment device for a hot blast stove.
The invention provides a waste gas treatment device for a hot blast stove, which comprises:
the heat exchange tank is erected on the mounting frame, and a dedusting conical disc is mounted at the bottom of the heat exchange tank;
the water washing tank is fixedly mounted on the mounting frame, and a purification assembly used for filtering waste gas after heat exchange is arranged on the water washing tank.
Preferably, the heat exchanger is arranged in the heat exchange tank, the heat exchanger comprises an air duct, a partition plate and air holes, the air holes are uniformly distributed on the partition plate, the air holes are connected with the air duct, and the two partition plates in the heat exchanger are embedded in the heat exchange tank.
Preferably, the dust removal conical disc is provided with an air inlet assembly, the air inlet assembly comprises an annular ring, an air inlet pipe and an inclined air injection head, the annular ring is fixedly embedded on the outer disc wall of the dust removal conical disc, the air inlet pipe is fixedly embedded on the outer ring wall of the annular ring, the inner ring wall of the annular ring is fixedly embedded with a plurality of uniformly distributed inclined air injection heads, and the inner edge of each inclined air injection head extends into the dust removal conical disc.
Preferably, install in the dust removal conical disk and be used for carrying out clear clean subassembly to heat exchanger below partition disc, just clean subassembly includes axis of rotation, rotor plate and cleaning brush, the axis of rotation rotates and installs on the partition disc of below, just fixed gomphosis has the rotor plate of a plurality of annular distribution on the axial wall of axis of rotation, each all fixed gomphosis has the cleaning brush on the upper plate wall of rotor plate, just the cleaning brush offsets with the partition disc of below.
Preferably, purify the subassembly including purifying a section of thick bamboo, driving motor, stirring fan and cut apart the grid plate, purifying a section of thick bamboo internal fixation and installing and cutting apart the grid plate, just cut apart the grid plate and purify the interior diapire interval of a section of thick bamboo 5-10cm, it has the active carbon granule of capacity to store on the grid plate to cut apart, and the particle diameter of active carbon granule is greater than the aperture of cutting apart the grid plate, driving motor fixed mounting is in the bottom of purifying a section of thick bamboo, just driving motor's output extends to and cuts apart the grid plate top, driving motor's output fixed mounting has the stirring fan of a plurality of annular distribution, purify the section of thick bamboo and pass through the exhaust interface connection at air duct and heat transfer tank top.
Preferably, an air guide assembly is arranged in the water washing tank, the air guide assembly comprises air guide tubes, flow dividing tubes and side air cavities, the flow dividing tubes are arranged between the air guide tubes, and the side air cavities are uniformly distributed on two sides of the flow dividing tubes.
Preferably, the purification cylinder is fixedly installed on the water washing tank, and two air guide pipes in the air guide assembly extend into the purification cylinder and are positioned below the segmentation grid plate.
Preferably, install atomizing component in the washing case, just atomizing component includes drain pipe and atomizer, fixed mounting has a plurality of evenly distributed's atomizer on the drain pipe, just the one end of drain pipe and the delivery port fixed connection of heat transfer jar.
Preferably, the washing tank is provided with an exhaust pipe and a drain valve.
Preferably, the bottom of the dust removal conical disc is fixedly provided with a dust exhaust valve.
Compared with the related art, the waste gas treatment device for the hot blast stove has the following beneficial effects:
1. the waste gas pipe of the hot blast stove is connected with the gas inlet pipe, the waste gas is blown into the dedusting conical disc by utilizing the inclined jet heads on the annular ring, and the waste gas blown out by the inclined jet heads forms annular air flow and enters the gas pipe from the air holes in the partition disc below the heat exchanger, so that the waste gas in the gas pipe exchanges heat with water liquid in the heat exchange tank, and the waste heat in the waste gas is effectively recovered;
2. the waste gas is blown into the dedusting conical disc by utilizing the inclined jet heads on the annular ring, and the waste gas blown out by the inclined jet heads forms annular air flow and enters the air guide pipe from the air holes in the partition disc below the heat exchanger, so that the waste gas in the air guide pipe exchanges heat with water liquid in the heat exchange tank, and the waste heat in the waste gas is effectively recovered;
3. the inclined jet nozzle blows out annular wind flow to push the rotating plate on the rotating shaft to rotate, so that on one hand, the wind speed of the annular wind flow can be reduced, the stroke time of waste gas in the gas guide pipe can be prolonged, and further, the heat exchange efficiency is improved, and on the other hand, the rotating plate can clean the filter screen on the partition plate by using the cleaning brush;
4. according to the invention, the driving motor is started to drive the stirring fan to stir the activated carbon particles, on one hand, the defect that adsorption capacity cannot be utilized due to the position relationship of part of the activated carbon particles can be eliminated by stirring the activated carbon particles, on the other hand, the disorder of the flow direction of waste gas in the activated carbon particles can be improved by stirring the activated carbon particles, and therefore, the treatment effect of the activated carbon particles on the waste gas is enhanced;
5. the waste gas treated by the invention flows into the shunt pipe through the air duct and is shunted into the water washing box through the side air cavities at the two sides of the shunt pipe, and the preheated water liquid is atomized by opening the atomizing nozzle a, so that the treated waste gas is subjected to atomization and dust removal treatment and humidification treatment.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of an exhaust gas treatment device for a hot blast stove according to the present invention;
FIG. 2 is a schematic structural diagram of a heat exchanger in the heat exchange tank shown in FIG. 1;
FIG. 3 is a schematic view of the connection structure of the heat exchanger and the dedusting cone disc shown in FIG. 1;
FIG. 4 is a schematic view of the cleaning assembly shown in FIG. 2;
FIG. 5 is a schematic view of the purification assembly of FIG. 1;
fig. 6 is a schematic view of the internal structure of the washing tank shown in fig. 1.
Reference numbers in the figures: 1. a heat exchange tank; 2. a dust removal conical disc; 3. a purification assembly; 31. a purification cartridge; 32. a drive motor; 33. a stirring fan; 34. dividing the grid plate; 4. a water washing tank; 5. a mounting frame; 6. a heat exchanger; 61. an air duct; 62. a separation disc; 63. air holes; 7. an air intake assembly; 71. an annular ring; 72. an air inlet pipe; 73. obliquely manufacturing an air jet head; 8. a cleaning assembly; 81. a rotating shaft; 82. a rotating plate; 83. a cleaning brush; 9. an air guide assembly; 91. an air duct; 92. a shunt tube; 93. a side air cavity; 9a, an atomizing component; 91a, a drain pipe; 92a, an atomizing spray head; 9b, an exhaust pipe; 9c, a blowdown valve; 9d and a dust exhaust valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1 to 6, an apparatus for treating exhaust gas from a hot blast stove according to an embodiment of the present invention includes: a heat exchange tank 1 and a water washing tank 4.
In the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 3, the heat exchange tank 1 is erected on a mounting frame 5, and the bottom of the heat exchange tank 1 is provided with a dust removing conical disc 2, a heat exchanger 6 is arranged in the heat exchange tank 1, the heat exchanger 6 comprises a gas guide pipe 61, a separating disc 62 and a gas hole 63, two identical separating discs 62 are respectively provided with a plurality of uniformly distributed gas holes 63, the gas hole 63 at the corresponding position of the separating disc 62 is connected with the gas guide pipe 61, the two separating discs 62 in the heat exchanger 6 are respectively embedded in the heat exchange tank 1, the dust removing conical disc 2 is provided with a gas inlet assembly 7, the gas inlet assembly 7 comprises an annular ring 71, a gas inlet pipe 72 and an oblique gas injection head 73, the annular ring 71 is fixedly embedded in the outer disc wall of the dust removing conical disc 2, the gas inlet pipe 72 is fixedly embedded in the outer ring wall of the annular ring 71, the oblique gas injection head 73 is fixedly distributed in the inner ring wall of the embedded ring 71, and the inner edge of the inclined air nozzle 73 is arranged in the dust removal conical disc 2, and the bottom of the dust removal conical disc 2 is fixedly provided with a dust exhaust valve 9 d.
It should be noted that: the waste gas pipe of the hot blast stove is connected with the gas inlet pipe 72, the waste gas is blown to the dedusting conical disc 2 by utilizing the inclined air nozzle 73 on the annular ring 71, the waste gas blown out by the inclined air nozzle 73 forms annular air flow and enters the gas guide pipe 61 from the air hole 63 in the partition disc 62 below the heat exchanger 6, so that the waste gas in the gas guide pipe 61 exchanges heat with the water liquid in the heat exchange tank 1, and the waste heat in the waste gas is effectively recovered.
In the embodiment of the present invention, referring to fig. 3 and 4, a cleaning assembly 8 for cleaning the partition plate 62 below the heat exchanger 6 is installed in the dust removing conical disc 2, and the cleaning assembly 8 includes a rotating shaft 81, a rotating plate 82 and a cleaning brush 83, the rotating shaft 81 is rotatably installed on the partition plate 62 below, a plurality of rotating plates 82 distributed in a ring shape are fixedly embedded on a shaft wall of the rotating shaft 81, the cleaning brush 83 is fixedly embedded on an upper plate wall of each rotating plate 82, and the cleaning brush 83 abuts against the partition plate 62 below.
It should be noted that: the filter screen is embedded in the air holes 63 of the lower partition plate 62, so that dust removal treatment can be effectively carried out on waste gas, the annular air flow blown out by the inclined air jet head 73 can push the rotating plate 82 on the rotating shaft 81 to rotate, on one hand, the air speed of the annular air flow can be reduced, so that the stroke time of the waste gas in the air guide pipe 61 can be prolonged, further, the heat exchange efficiency is improved, and on the other hand, the rotating plate 82 can utilize the cleaning brush 83 to clean the filter screen on the partition plate 62;
in the present embodiment: the falling dust can be accumulated in the dust removal conical disc 2 for subsequent removal.
In the embodiment of the present invention, referring to fig. 1 and 5, the washing tank 4 is fixedly installed on the installation frame 5, the washing tank 4 is installed with the exhaust pipe 9b and the blow-down valve 9c, the washing tank 4 is provided with the purification assembly 3 for filtering the waste gas after heat exchange, the purification assembly 3 includes a purification cylinder 31, a driving motor 32, a stirring fan 33 and a partition grid plate 34, the purification cylinder 31 is internally and fixedly installed with the partition grid plate 34, the interval between the partition grid plate 34 and the inner bottom wall of the purification cylinder 31 is 5-10cm, the partition grid plate 34 is stored with sufficient active carbon particles, the particle size of the active carbon particles is larger than the pore size of the partition grid plate 34, the driving motor 32 is fixedly installed at the bottom of the purification cylinder 31, the output end of the driving motor 32 extends to the upper side of the partition grid plate 34, the output end of the driving motor 32 is fixedly installed with a plurality of stirring fans 33 distributed annularly, the purification cylinder 31 is connected with an exhaust interface at the top of the heat exchange tank 1 through an air duct.
It should be noted that: waste gas after the heat transfer enters into purification section of thick bamboo 31 back through the air duct, absorb waste gas by the active carbon granule in the purification section of thick bamboo 31, open driving motor 32 and drive stirring fan 33 and stir the active carbon granule, on the one hand stir the active carbon granule and can eliminate partial active carbon granule because the position relation leads to the shortcoming that adsorption efficiency can not obtain the utilization, on the other hand stir the active carbon granule and can improve the confusion nature of waste gas flow direction in the active carbon granule, consequently, the treatment effect of active carbon granule to waste gas has been strengthened.
In an embodiment of the present invention, referring to fig. 1 and 6, an air guide assembly 9 is disposed in the water washing tank 4, the air guide assembly 9 includes air guide tubes 91, flow dividing tubes 92 and side air cavities 93, the flow dividing tubes 92 are disposed between the two air guide tubes 91, a plurality of side air cavities 93 are disposed on both sides of the flow dividing tubes 92, the purifying cylinder 31 is fixedly mounted on the water washing tank 4, the two air guide tubes 91 of the air guide assembly 9 extend into the purifying cylinder 31 and are located below the divided grid plate 34, an atomizing assembly 9a is mounted in the water washing tank 4, the atomizing assembly 9a includes a water discharge pipe 91a and an atomizing nozzle 92a, the water discharge pipe 91a is fixedly mounted with a plurality of atomizing nozzles 92a, and one end of the water discharge pipe 91a is fixedly connected to a water outlet of the heat exchange tank 1.
It should be noted that: the waste gas after the processing flows to shunt tubes 92 in through air duct 91 to in shunting to washing case 4 by the side air cavity 93 of shunt tubes 92 both sides, open atomizer 92a and atomize the water liquid after will preheating, thereby carry out atomizing dust removal to the waste gas after handling and carry out the humidification processing to waste gas, hot water can carry out disinfection processing to waste gas simultaneously.
The working principle of the waste gas treatment device for the hot blast stove is as follows:
the waste gas pipe of the hot blast stove is connected with the air inlet pipe 72, the waste gas is blown into the dust removal conical disc 2 by utilizing the inclined air injection head 73 on the annular ring 71, the waste gas blown out by the inclined air injection head 73 forms annular air flow and enters the air guide pipe 61 from the air hole 63 in the partition disc 62 below the heat exchanger 6, so that the waste gas in the air guide pipe 61 exchanges heat with water liquid in the heat exchange tank 1, thereby effectively recovering the waste heat in the waste gas, the filter screen is embedded in the air hole 63 of the partition disc 62 below, thereby effectively performing dust removal treatment on the waste gas, the annular air flow blown out by the inclined air injection head 73 can push the rotating plate 82 on the rotating shaft 81 to rotate, on one hand, the air speed of the annular air flow can be reduced, the travel time of the waste gas in the air guide pipe 61 can be prolonged, and the heat exchange efficiency is improved, on the other hand, the rotating plate 82 can utilize the cleaning brush 83 to clean the filter screen on the partition disc 62, after the waste gas after heat exchange enters the purification cylinder 31 through the gas guide tube, the waste gas is absorbed by the activated carbon particles in the purification cylinder 31, the driving motor 32 is started to drive the stirring fan 33 to stir the activated carbon particles, on one hand, the defect that the adsorption capacity of part of the activated carbon particles cannot be utilized due to the position relationship can be eliminated by stirring the activated carbon particles, on the other hand, the disorder of the flow direction of the waste gas in the activated carbon particles can be improved by stirring the activated carbon particles, thereby enhancing the treatment effect of the activated carbon particles on the exhaust gas, leading the treated exhaust gas to flow into the shunt pipe 92 through the air duct 91, and is shunted into the water washing tank 4 by the side air cavities 93 at the two sides of the shunt tube 92, the atomization nozzle 92a is opened to atomize the preheated water liquid, thereby atomizing dust removal processing and carrying out the humidification processing to waste gas after handling, hot water can disinfect to waste gas simultaneously.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. Waste gas treatment device based on hot-blast furnace is used, its characterized in that includes:
the heat exchange tank (1) is erected on the mounting frame (5), and the bottom of the heat exchange tank (1) is provided with the dust removal conical disc (2);
the water washing device comprises a water washing tank (4), wherein the water washing tank (4) is fixedly installed on an installation frame (5), and a purification assembly (3) used for filtering waste gas after heat exchange is arranged on the water washing tank (4).
2. The waste gas treatment device for the hot blast stove according to claim 1, wherein a heat exchanger (6) is arranged in the heat exchange tank (1), the heat exchanger (6) comprises a gas guide pipe (61), a partition plate (62) and gas holes (63), a plurality of uniformly distributed gas holes (63) are formed in the two identical partition plates (62), the gas holes (63) in the corresponding positions of the partition plate (62) are connected with the gas guide pipe (61), and the two partition plates (62) in the heat exchanger (6) are embedded in the heat exchange tank (1).
3. The exhaust gas treatment device for the hot blast stove according to claim 1, wherein the dust removal conical disc (2) is provided with an air inlet assembly (7), the air inlet assembly (7) comprises an annular ring (71), an air inlet pipe (72) and a slant air injection head (73), the annular ring (71) is fixedly embedded on the outer disc wall of the dust removal conical disc (2), the air inlet pipe (72) is fixedly embedded on the outer ring wall of the annular ring (71), the inner ring wall of the annular ring (71) is fixedly embedded with a plurality of slant air injection heads (73) which are uniformly distributed, and the slant air injection heads (73) are arranged from the inner edge to the inside of the dust removal conical disc (2).
4. The exhaust gas treatment device for the hot blast stove according to claim 2, wherein the dust removing conical disc (2) is internally provided with a cleaning component (8) for cleaning a partition disc (62) below the heat exchanger (6), the cleaning component (8) comprises a rotating shaft (81), a rotating plate (82) and a cleaning brush (83), the rotating shaft (81) is rotatably arranged on the partition disc (62) below, a plurality of rotating plates (82) distributed in an annular shape are fixedly embedded on the shaft wall of the rotating shaft (81), the cleaning brush (83) is fixedly embedded on the upper plate wall of each rotating plate (82), and the cleaning brush (83) is abutted against the partition disc (62) below.
5. The exhaust gas treatment device for the hot blast stove according to claim 1, wherein the purification assembly (3) comprises a purification cylinder (31), a driving motor (32), a stirring fan (33) and a partition grid plate (34), the partition grid plate (34) is fixedly installed in the purification cylinder (31), the interval between the partition grid plate (34) and the inner bottom wall of the purification cylinder (31) is 5-10cm, the partition grid plate (34) is filled with a sufficient amount of activated carbon particles, the particle size of the activated carbon particles is larger than the pore size of the partition grid plate (34), the driving motor (32) is fixedly installed at the bottom of the purification cylinder (31), the output end of the driving motor (32) extends above the partition grid plate (34), the output end of the driving motor (32) is fixedly installed with a plurality of stirring fans (33) distributed in a ring shape, the purification cylinder (31) is connected with an exhaust interface at the top of the heat exchange tank (1) through an air duct.
6. The waste gas treatment device for the hot blast stove is characterized in that an air guide assembly (9) is arranged in the water washing tank (4), the air guide assembly (9) comprises air guide pipes (91), flow dividing pipes (92) and side air cavities (93), the flow dividing pipes (92) are arranged between the two air guide pipes (91), and a plurality of side air cavities (93) are uniformly distributed on two sides of each flow dividing pipe (92).
7. The waste gas treatment device for the hot blast stove is characterized in that the purifying cylinder (31) is fixedly arranged on the water washing tank (4), and two gas guide pipes (91) in the gas guide assembly (9) extend into the purifying cylinder (31) and are positioned below the divided grid plates (34).
8. The waste gas treatment device for the hot blast stove is characterized in that an atomization assembly (9a) is installed in the water washing tank (4), the atomization assembly (9a) comprises a drain pipe (91a) and an atomization nozzle (92a), the drain pipe (91a) is fixedly provided with a plurality of uniformly distributed atomization nozzles (92a), and one end of the drain pipe (91a) is fixedly connected with a water outlet of the heat exchange tank (1).
9. The exhaust gas treatment apparatus for a hot blast stove according to claim 1, wherein an exhaust pipe (9b) and a blow-off valve (9c) are installed on the rinsing tank (4).
10. The exhaust gas treatment device for a hot blast stove according to claim 1, wherein a dust exhaust valve (9d) is fixedly installed at the bottom of the dust removal conical disc (2).
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Cited By (1)
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| CN115446251A (en) * | 2022-10-28 | 2022-12-09 | 南通国和半导体设备有限公司 | Forging furnace for die manufacturing |
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