CN113457342B - Waste gas treatment device for hot blast stove - Google Patents
Waste gas treatment device for hot blast stove Download PDFInfo
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- CN113457342B CN113457342B CN202110746058.0A CN202110746058A CN113457342B CN 113457342 B CN113457342 B CN 113457342B CN 202110746058 A CN202110746058 A CN 202110746058A CN 113457342 B CN113457342 B CN 113457342B
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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 and comprises a first air duct, a partition plate and air holes, the two air holes are the same, the air holes are formed in the partition plate and are evenly distributed, the air holes in the corresponding positions of the partition plate are connected with the first 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 inclined air injection heads which are uniformly distributed, 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 abluent clean subassembly to heat exchanger below partition disc, just clean subassembly includes axis of rotation, rotor plate and cleaning brush, the axis of rotation is rotated and is installed 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 the fixed gomphosis of all having 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, the washing tank is internally provided with an air guide assembly, the air guide assembly comprises second air guide pipes, flow dividing pipes and side air cavities, the flow dividing pipes are arranged between the second air guide pipes, and the two sides of the flow dividing pipes are provided with the side air cavities which are uniformly distributed.
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 gas nozzle on the annular ring, the waste gas blown out by the inclined gas nozzle forms annular airflow and enters the gas pipe from the air hole in the separation 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 atomization spray head a is opened to atomize the preheated water liquid, so that the treated waste gas is atomized and dedusted, and the waste gas is humidified.
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 dust removal conical 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. a first 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. a second 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 the mounting frame 5, and the bottom of the heat exchange tank 1 is provided with the dust removing conical disc 2, the heat exchanger 6 is arranged in the heat exchange tank 1, the heat exchanger 6 comprises a first air duct 61, a partition disc 62 and an air hole 63, two identical partition discs 62 are respectively provided with a plurality of uniformly distributed air holes 63, the air hole 63 at the corresponding position of the partition disc 62 is connected with the first air duct 61, the two partition 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 the air inlet assembly 7, the air inlet assembly 7 comprises an annular ring 71, an air inlet pipe 72 and an inclined air injection head 73, the annular ring 71 is fixedly embedded in the outer disc wall of the dust removing conical disc 2, and the air inlet pipe 72 is fixedly embedded in the outer ring wall of the annular ring 71, a plurality of inclined air injection heads 73 which are uniformly distributed are fixedly embedded on the inner annular wall of the annular ring 71, the inner edges of the inclined air injection heads 73 extend into the dust removal conical disc 2, and a dust exhaust valve 9d is fixedly mounted at the bottom of the dust removal conical disc 2.
It should be noted that: the waste gas pipe and the gas inlet pipe 72 of the hot blast stove are connected with each other, waste gas is blown to the dedusting conical disc 2 by utilizing the inclined air injection head 73 on the annular ring 71, and waste gas blown out by the inclined air injection head 73 forms annular air flow and enters the first gas guide pipe 61 from the air hole 63 in the partition disc 62 below the heat exchanger 6, so that heat exchange is carried out between the waste gas in the first gas guide pipe 61 and 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 the waste gas, the annular air flow blown out by the inclined air nozzle 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 first air duct 61 can be prolonged, so that 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 water washing tank 4 is fixedly mounted on a mounting frame 5, an exhaust pipe 9b and a blow-down valve 9c are mounted on the water washing tank 4, and a purification assembly 3 for filtering the waste gas after heat exchange is disposed on the water washing tank 4, the purification assembly 3 includes a purification cylinder 31, a driving motor 32, a stirring fan 33 and a partition grid plate 34, a partition grid plate 34 is fixedly mounted in the purification cylinder 31, a distance between the partition grid plate 34 and an inner bottom wall of the purification cylinder 31 is 5-10cm, a sufficient amount of activated carbon particles are stored on the partition grid plate 34, a particle size of the activated carbon particles is larger than a pore size of the partition grid plate 34, the driving motor 32 is fixedly mounted at the bottom of the purification cylinder 31, an output end of the driving motor 32 extends to above the partition grid plate 34, a plurality of stirring fans 33 distributed annularly are fixedly mounted at an output end of the driving motor 32, 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 cylinder 31 in through the air duct after, absorb waste gas by the active carbon granule in the purification cylinder 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 the shortcoming that partial active carbon granule can not obtain the utilization because of positional relationship leads to adsorption efficiency, on the other hand stir the active carbon granule and can improve the disorder 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 second air guide tubes 91, a flow dividing tube 92 and side air cavities 93, the flow dividing tube 92 is disposed between the two second air guide tubes 91, a plurality of side air cavities 93 are disposed on both sides of the flow dividing tube 92, the purifying cylinder 31 is fixedly mounted on the water washing tank 4, the two second 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 drain pipe 91a and an atomizing nozzle 92a, the drain pipe 91a is fixedly mounted with a plurality of atomizing nozzles 92a, and one end of the drain 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 the shunt tubes 92 through the second air duct 91 in to by the side air cavity 93 reposition of redundant personnel of shunt tubes 92 both sides to in the washing case 4, open atomizer 92a and atomize the water liquid after will preheating, thereby carry out the atomizing dust removal processing and carry out the humidification processing to waste gas to the waste gas after handling, 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:
a waste gas pipe of a hot blast stove is connected with an air inlet pipe 72, waste gas is blown to the dedusting conical disc 2 by utilizing an inclined air injection head 73 on an annular ring 71, annular air flow is formed by the waste gas blown out by the inclined air injection head 73 and enters a first air duct 61 from an air hole 63 in a partition disc 62 below a heat exchanger 6, so that the waste gas in the first air duct 61 exchanges heat with water in a heat exchange tank 1, waste heat in the waste gas is effectively recovered, a filter screen is embedded in an air hole 63 of the partition disc 62 below, the waste gas can be effectively subjected to dedusting treatment, the annular air flow blown out by the inclined air injection head 73 can push a rotating plate 82 on a 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 first air duct 61 can be prolonged, the heat exchange efficiency is improved, on the other hand, the rotating plate 82 can utilize a 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, the treated exhaust gas flows into the shunt pipe 92 through the second gas guide pipe 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 to the waste gas after handling, hot water can carry out disinfection treatment 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 (8)
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 tank (4) is fixedly arranged on the mounting frame (5), and the water washing tank (4) is provided with a purification assembly (3) for filtering the waste gas after heat exchange;
a heat exchanger (6) is arranged in the heat exchange tank (1), the heat exchanger (6) comprises first air guide pipes (61), partition plates (62) and air holes (63), a plurality of uniformly distributed air holes (63) are formed in the two identical partition plates (62), the air holes (63) in the corresponding positions of the partition plates (62) are connected with the first air guide pipes (61), and the two partition plates (62) in the heat exchanger (6) are embedded in the heat exchange tank (1);
filter screen in the gomphosis in the gas pocket 63 of below partition disc 62, install in dust removal conical disk (2) and be used for carrying out clear clean subassembly (8) to heat exchanger (6) below partition disc (62), just clean subassembly (8) are including axis of rotation (81), rotor plate (82) and cleaning brush (83), axis of rotation (81) are rotated and are installed on partition disc (62) of below, just fixed gomphosis has rotor plate (82) of a plurality of annular distribution on the axial wall of axis of rotation (81), each all fixed gomphosis has cleaning brush (83) on the upper plate wall of rotor plate (82), just cleaning brush (83) offset with partition disc (62) of below.
2. 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).
3. 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.
4. 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 second air guide pipes (91), dividing pipes (92) and side air cavities (93), the dividing pipes (92) are arranged between the two second air guide pipes (91), and a plurality of side air cavities (93) are uniformly distributed on two sides of each dividing pipe (92).
5. The exhaust gas treatment device for the hot blast stove according to claim 4, wherein the purifying cylinder (31) is fixedly installed on the water washing tank (4), and the two second gas guide pipes (91) in the gas guide assembly (9) extend into the purifying cylinder (31) and are positioned below the divided grid plate (34).
6. 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).
7. 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).
8. 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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| CN115446251B (en) * | 2022-10-28 | 2023-04-21 | 南通国和半导体设备有限公司 | Forging furnace for die manufacturing |
| CN116334335A (en) * | 2023-03-02 | 2023-06-27 | 扬州岱发环保科技有限公司 | A hot blast stove with a uniform preheating mechanism |
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| CN212680582U (en) * | 2020-07-22 | 2021-03-12 | 内蒙古蒙投环境股份有限公司 | Energy-saving municipal domestic waste is exhaust treatment device for carbonization |
| CN112179178A (en) * | 2020-09-30 | 2021-01-05 | 安徽祥安热能设备有限公司 | Novel energy-saving heat exchange equipment |
| CN112719707A (en) * | 2020-12-25 | 2021-04-30 | 湖北启耀金属制品有限公司 | Cooling device for welding machine |
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