CN208541962U - A kind of online dust pelletizing system of converter - Google Patents

A kind of online dust pelletizing system of converter Download PDF

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Publication number
CN208541962U
CN208541962U CN201820624562.7U CN201820624562U CN208541962U CN 208541962 U CN208541962 U CN 208541962U CN 201820624562 U CN201820624562 U CN 201820624562U CN 208541962 U CN208541962 U CN 208541962U
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China
Prior art keywords
air
converter
cabinet
dust
pelletizing system
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CN201820624562.7U
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Chinese (zh)
Inventor
黄风山
刘建培
刘勇
华祺年
赵华森
王建波
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Hebei University of Science and Technology
Shijiazhuang Iron and Steel Co Ltd
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Hebei University of Science and Technology
Shijiazhuang Iron and Steel Co Ltd
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Abstract

The utility model discloses a kind of online dust pelletizing systems of converter, including converter, the air outlet of converter is connected to after-burning stove, the flue gas of after-burning stove is by the first air-introduced machine followed by cyclone separator, bag filter, desulfurizing tower and dehydrator, finally it is discharged by smoke evacuation chimney, spray thrower and coldplate are equipped with above the converter, the after-burning stove is by secondary air fan air feed, dust collecting box in communication is set below the cyclone separator, and cyclone separator is supported in above dust collecting box, the second air-introduced machine is equipped between dehydrator and smoke evacuation chimney.The utility model increase after-burning stove, and cooperate cyclone separator and bag filter, repeatedly processing separation is carried out to the flue gas after second-time burning, achievees the effect that clean manufacturing, the online dust pelletizing system that formation energy conservation, desulfurization, dedusting are integrated.

Description

A kind of online dust pelletizing system of converter
Technical field
The utility model belongs to steelmaking equipment technical field, the online dust pelletizing system of specially a kind of converter.
Background technique
It is increasingly stringent to the emission request of fine dust as country requires to be continuously improved to contamination control.Make steel industry Atmosphere pollution it is the most serious with boiler smoke, boiler generated in fusion process a large amount of high-temperature flue gas, dust and other Emission accounts for about the 80% of entire steel-casting foundry's atmosphere pollution total amount, and flue-gas temperature is high, flue dust complicated component, and concentration is high, different The dust discharge of melting period, smoke evacuation fluctuation are that blowdown flow rate is maximum in mechanical industry stove, one of most intractable flue gas type greatly.
Electric furnace is in smelting process, due to the heating, fusing and chemical reaction of furnace charge, will form certain pressure in furnace, The gap of flue gas and dust from the gap of surrounding them, fire door and fire door is caused to be come up.Generally, every smelting 1t steel meeting Generating 800~1000 cubic metres of temperature is 1200~1300 degree of flue gas, 2.5~12.0 kilograms of flue dust, dust contained flue gas concentration It is higher, if this flue dust is not controlled, it will environment is seriously polluted, production is not only influenced, worker can also be impacted, It if handled not in time, in direct emission road atmosphere, would seriously pollute the environment, be chief-criminal's misfortune of the atmosphere pollution such as haze It is first.
Since dust is heavier in steel mill, the serious health for polluting environment and damaging worker, operating personnel is in for a long time In such environment undoubtedly can negative unhealthy, and dust also will cause other harm, such as mechanical equipment generate it is abnormal, together When some fields dust need strict control, otherwise will cause irreversible damage, so the dedusting in processing environment Work is to have to the step of paying attention to.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of online dust pelletizing system of converter, which increases by two Secondary combustion furnace, and cooperate cyclone separator and bag filter, repeatedly processing separation is carried out to the flue gas after second-time burning, is reached The effect of clean manufacturing, the online dust pelletizing system that formation energy conservation, desulfurization, dedusting are integrated.
In order to solve the above technical problems, technical solution adopted in the utility model is: a kind of online dedusting of converter System, it is characterised in that: including converter, the air outlet of converter is connected to after-burning stove, the flue gas warp of after-burning stove The first air-introduced machine is crossed followed by cyclone separator, bag filter, desulfurizing tower and dehydrator, is finally discharged by smoke evacuation chimney, institute It states and is equipped with spray thrower and coldplate above converter, the after-burning stove is by secondary air fan air feed, under the cyclone separator Dust collecting box in communication is arranged in side, and cyclone separator is supported in above dust collecting box, dehydrator and smoke evacuation chimney Between be equipped with the second air-introduced machine.
Preferably, circulating water cooling system is set in the condensing tower, and the cooling water in condensing tower is by its inner walls The water drenching mouth of surface distribution sprays.
Preferably, the cyclone separator includes taper cabinet, air-exhausting duct is arranged in cabinet, air-exhausting duct above cabinet by prolonging Extend to box house and close to lower surface, helical blade, helical blade and cabinet is arranged in the air draft pipe outer wall in box house Inner wall forms rotation air duct, and rotation air duct one end is connected to the air inlet for being located at wall box, rotates the air duct other end and air draft The connection of pipe lower end.
Preferably, it is equipped with solid phase collecting box at the cabinet lower port, passes through filter screen between solid phase collecting box and cabinet It separates, setting pushes away grey screw rod inside solid phase collecting box.
Preferably, the bag filter includes outer case of dust remover, and outer case of dust remover upper surface is equipped with blast pipe, deduster Interior of shell is divided into two spaces by horizontally disposed partition, and headroom space is air chamber, and cloth bag is distributed on partition, The lower end of the lower portion cone-shaped collection bucket of outer case of dust remover, cone-shaped collection bucket is equipped with discharge pipe.
The beneficial effects of adopting the technical scheme are that
(1) the online dust pelletizing system of the utility model increases after-burning stove, and further cools down to flue gas, utilizes rotation Wind separator and bag filter capture the impurity in flue gas, realize further dedusting, while cooperating desulfurizing tower and taking off Water tower uses, and carries out repeatedly processing separation to the flue gas after second-time burning, achievees the effect that clean manufacturing, formed energy conservation, desulfurization, The online dust pelletizing system that dedusting is integrated;
(2) after-burning stove in the utility model is thoroughly solved in iron and steel enterprise not using the method for second-time burning The problem of substance combustions such as oil gas, carbon particle occurred with coal quality burning are insufficient, waste of energy;
(3) converter in the utility model increases spray thrower and coldplate, forms the cooling of first time flue gas, subsequent By condensing tower, second of flue gas cooling is formed by internal condensation system, flue gas is enable to reach the temperature of bag filter It is required that;
(4) the utility model passes through the combination of cyclone separator and bag filter, carries out repeatedly processing separation to flue gas, Achieve the effect that clean manufacturing;Cyclone separator separation has the gas-solid product of complicated composition, make 5 microns of partial size it is below solid Body particle can efficiently separate, and separative efficiency is high.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram of dust pelletizing system in the utility model;
Fig. 2 is the structural schematic diagram of cyclone separator in this online dust pelletizing system;
Fig. 3 is the structural schematic diagram of bag filter in this online dust pelletizing system;
In figure: 1, converter, 2, spray thrower, 3, coldplate, 4, secondary air fan, 5, after-burning stove, 6, condensing tower, 7, leaching The mouth of a river, the 8, first air-introduced machine, 9, cyclone separator, 10, dust collecting box, 11, bag filter, 12, desulfurizing tower, 13, dehydration Device, the 14, second air-introduced machine, 15, smoke evacuation chimney;16, air-exhausting duct, 17, cabinet, 18, air inlet, 19, solid phase collecting box, 20, push away ash Screw rod, 21, helical blade, 22, outer case of dust remover, 23, partition, 24, air chamber, 25, cloth bag, 26, supporting leg, 27, cone-shaped collection Bucket, 28, discharge pipe, 29, blast pipe.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
1 it is found that the utility model is specifically related to a kind of online dust pelletizing system of converter with reference to the accompanying drawings, including converter 1, The air outlet of converter 1 is connected to after-burning stove 5, and after-burning stove 5 can carry out flue gas, the dust of the discharge of converter 1 Second-time burning reduces impurity in flue gas, improves energy utilization rate.The flue gas of after-burning stove 5 is successively flowed by the first air-introduced machine 8 Through cyclone separator 9, bag filter 11, desulfurizing tower 12 and dehydrator 13, finally it is discharged by smoke evacuation chimney 15, wherein cyclonic separation Device 9 separates the dust in flue gas, and the dust after separation falls into the dust collecting box 10 being arranged below cyclone separator 9 Interior, bag filter 11 is used to filter out the fine particulates in flue gas, further increases dust removing effects.Desulfurizing tower 12 is for filtering out The gas containing element sulphur in flue gas, prevents pollution atmosphere, and dehydrator 13 can make toxic gas be dissolved in water discharge.
Spray thrower 2 and coldplate 3 are equipped with above converter 1, after-burning stove 5 is by 4 air feed of secondary air fan, and whirlwind Separator 9 is supported in 10 top of dust collecting box, and the second air-introduced machine 14 is equipped between dehydrator 13 and smoke evacuation chimney 15.Condensing tower 6 Interior setting circulating water cooling system, the water drenching mouth 7 that the cooling water in condensing tower 6 is distributed by surface on its inner walls spray.
As shown in Fig. 2, cyclone separator 9 includes taper cabinet 17, is arranged air-exhausting duct 16 in cabinet 17, air-exhausting duct 16 by 17 inside of cabinet is extended to above cabinet 17 and 16 outer wall of the air-exhausting duct setting helical-blade close to lower surface, inside cabinet 17 Piece 21 forms rotation air duct in cabinet 17, and rotation air duct one end is connected to the air inlet 18 for being located at 17 side wall of cabinet, rotary wind The road other end is connected to 16 lower end of air-exhausting duct.Solid phase collecting box 19, solid phase collecting box 19 and cabinet are equipped at 17 lower port of cabinet It is separated between 17 by filter screen, setting pushes away grey screw rod 20 inside solid phase collecting box 19.Cyclone separator 9 is for gas-solid body A kind of equipment of the separation of system or liquid-solid system.Working principle is rotary motion caused by being introduced tangentially by air-flow, makes to have The solid particle or drop of larger centrifugal inertial force get rid of to outside wall surface and separate.It is tangential introducing-type whirlwind that the utility model, which uses, Separator, centrifugal force of the separator suffered by particle is much larger than gravity and inertia force, so separative efficiency is higher.
As shown in Fig. 3, bag filter 11 includes outer case of dust remover 22, and 22 upper surface of outer case of dust remover is equipped with blast pipe 29, divided by horizontally disposed partition 23 for two spaces inside outer case of dust remover 22, headroom space is air chamber 24, every Cloth bag 25 is distributed on plate 23, the lower end of the lower portion cone-shaped collection bucket 27 of outer case of dust remover 22, cone-shaped collection bucket 27 is equipped with Pipe material 28.Dusty gas is entered by the blast pipe 29 on 11 top of bag filter, when entering ash bucket through deflector, due to water conservancy diversion The effects of collision of plate and the reduction of gas velocity, coarse dust will be fallen into ash bucket, remaining fine particle dusts with gas into Enter cloth bag 25, the effects of due to inertia, diffusion, barrier, hook, electrostatic that 25 material of cloth bag is fiber and fabric, dust is hindered It stays in filter bag, purified gas escapes outside bag, is discharged through discharge pipe 28.The dust-extraction unit that this system uses uses whirlwind Separator preliminary dust removal, and then further isolated dust in flue gas by bag filter, so that clean air be discharged To atmosphere.
When the utility model is specifically used, the flue gas that converter 1 is discharged enters condensing tower 6, condensation by after-burning stove 5 Flue gas after cooling is led to dust pelletizing system by pipe again by tower 6, is finally discharged by smoke evacuation chimney 15.It is first in terms of cooling It is provided with spray thrower 2 and coldplate 3 on first converter 1, cool down on the spot for first;Secondly pass through water drenching mouth 7 in condensing tower 6 Spray further cool down, most of flue gas can be added in a solid state in water flow to be excluded by water outlet, remaining basic For the gas harmless to air, it is discharged by pipe and the second air-introduced machine 14 eventually by smoke evacuation chimney 15.The utility model mentions The online dust pelletizing system supplied does not influence smelting process by outlet mode, and by measurement, the temperature difference reaches 20 degree before and after dedusting, contains Dust concentration decline 35%, smoke discharge amount has dropped 95%, efficiency 94%.
The above is the specific embodiment of the utility model, and the example above illustrates the not essence to the utility model Composition of contents limitation, person of an ordinary skill in the technical field can be to above-mentioned specific implementation after having read this specification Mode is made an amendment or is deformed, without departing from the spirit and scope of the utility model.

Claims (5)

1. a kind of online dust pelletizing system of converter, it is characterised in that: including converter (1), the air outlet and two of converter (1) Secondary combustion furnace (5) connection, the flue gas of after-burning stove (5) is by condensing tower (6), the first air-introduced machine (8) followed by whirlwind point From device (9), bag filter (11), desulfurizing tower (12) and dehydrator (13), finally it is discharged by smoke evacuation chimney (15), the converter (1) top is equipped with spray thrower (2) and coldplate (3), and the after-burning stove (5) is by secondary air fan (4) air feed, the whirlwind point The dust collecting box (10) in communication from setting below device (9), and cyclone separator (9) is supported in dust collecting box (10) Top is equipped with the second air-introduced machine (14) between dehydrator (13) and smoke evacuation chimney (15).
2. a kind of online dust pelletizing system of converter according to claim 1, it is characterised in that: in the condensing tower (6) Circulating water cooling system is set, and the cooling water in condensing tower (6) is sprayed by the water drenching mouth (7) that surface on its inner walls is distributed.
3. a kind of online dust pelletizing system of converter according to claim 1, it is characterised in that: the cyclone separator (9) include taper cabinet (17), air-exhausting duct (16) are set in cabinet (17), air-exhausting duct (16) is by extending to case above cabinet (17) Body (17) is internal and close to lower surface, and helical blade (21) are arranged in air-exhausting duct (16) outer wall internal in cabinet (17), spiral Blade (21) and cabinet (17) inner wall form rotation air duct, rotation air duct one end and the air inlet (18) for being located at cabinet (17) side wall Connection, the rotation air duct other end are connected to air-exhausting duct (16) lower end.
4. a kind of online dust pelletizing system of converter according to claim 3, it is characterised in that: cabinet (17) lower end Solid phase collecting box (19) are equipped at mouthful, are separated between solid phase collecting box (19) and cabinet (17) by filter screen, are collected in solid phase Setting pushes away grey screw rod (20) inside case (19).
5. a kind of online dust pelletizing system of converter according to claim 1, it is characterised in that: the bag filter It (11) include outer case of dust remover (22), outer case of dust remover (22) upper surface is equipped with blast pipe (29), and outer case of dust remover (22) is internal It is divided into two spaces by horizontally disposed partition (23), headroom space is air chamber (24), and partition is distributed on (23) The lower end of cloth bag (25), the lower portion cone-shaped collection bucket (27) of outer case of dust remover (22), cone-shaped collection bucket (27) is equipped with discharge nozzle Road (28).
CN201820624562.7U 2018-04-28 2018-04-28 A kind of online dust pelletizing system of converter Active CN208541962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820624562.7U CN208541962U (en) 2018-04-28 2018-04-28 A kind of online dust pelletizing system of converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820624562.7U CN208541962U (en) 2018-04-28 2018-04-28 A kind of online dust pelletizing system of converter

Publications (1)

Publication Number Publication Date
CN208541962U true CN208541962U (en) 2019-02-26

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112933822A (en) * 2021-01-20 2021-06-11 江西华汾粮油实业有限公司 A spiral dust collector for rice processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112933822A (en) * 2021-01-20 2021-06-11 江西华汾粮油实业有限公司 A spiral dust collector for rice processing

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