CN103272441B - Two-stage integrated dust-collecting device for flue gas circulation of sintering machine - Google Patents
Two-stage integrated dust-collecting device for flue gas circulation of sintering machine Download PDFInfo
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- CN103272441B CN103272441B CN201310168567.5A CN201310168567A CN103272441B CN 103272441 B CN103272441 B CN 103272441B CN 201310168567 A CN201310168567 A CN 201310168567A CN 103272441 B CN103272441 B CN 103272441B
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Abstract
The invention relates to a two-stage integrated dust-collecting device for flue gas circulation of a sintering machine. The two-stage integrated dust-collecting device comprises a primary dust-collector tank body and a secondary dust-collector tank body connected with each other, an inlet of the primary dust-collector tank body is connected with an inlet pipeline, a horizontal cyclone assembly is arranged in the primary dust-collector tank body, a mounting fixing component is arranged in the secondary dust-collector tank body, a vertical cyclone assembly is arranged at the bottom of the mounting fixing component, the upper end of the vertical cyclone assembly is connected with an inlet of a gas guide pipe, the outlet of the gas guide pipe is arranged in a purifying gas space in the secondary dust-collector tank body, the purifying gas space is connected with an outlet pipeline, and an ash hopper is arranged below each of the primary dust-collector tank body and the secondary dust-collector tank body. The dust-collecting efficiency can be improved.
Description
Technical field
The present invention relates to dedusting technology field, particularly relate to a kind of two-stage one dust arrester for sintering device flue gas circulation.
Background technology
Sintering circuit is energy consumption and the disposal of pollutants rich and influential family of steel industry.In the residual heat resources be not yet utilized effectively, sintered discharge gas waste heat is wherein main one." 12 " period, the recycle utilization of steel industry iron ore sintering machine high-temperature flue gas will be promoted successively.
Sintering device flue gas recycle utilization refers to: sintering machine partial hot waste gas is re-introduced in sintering process, when high-temperature hot flue gas cycles through sinter bed again, the high temperature sensible heat of flue gas all supplies sinter mixture, CO in circulating flue gas rekindles, and reaches UTILIZATION OF VESIDUAL HEAT IN, saves the effect of sintering process energy consumption.In addition, be intensely decomposed during the sintering belt of the organic pollution such as the dioxin in heat smoke, PAHs, VOC up to more than 1300 DEG C in by sinter bed, NOx is by also by thermal decomposition by partial destruction, can significantly reducing the discharge capacity of the organic pollution such as NOx, dioxin during high temperature sintering band.
The sintering device flue gas circulatory system needs efficiently succinct, the resistant to elevated temperatures flue gas ash removal of supporting one, purifier.Existing patent announcement number is the high temperature multiple pipe double polar dust remover of CN2550663Y, and adopt shutter one-level inertial dust collection to add Whirlwind cyclone multitube two-stage dust removal, efficiency of dust collection is 90 ~ 92%.Obviously because this deduster adopts inertial dust collection, inertial dust collection affects efficiency of dust collection, increasing device space.As shown in Figure 1, the patent No. is the high-efficient multi-pipe double polar dust remover of ZL200820218147.8, and this patent two-stage all arranges vertical multi-pipe deduster, and equipment is longer, difficult arrangement in the sintering device flue gas circulatory system.In addition, a kind of vertical cyclone deduster is only installed, affects efficiency of dust collection.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of two-stage one dust arrester for sintering device flue gas circulation, can improve efficiency of dust collection.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of two-stage one dust arrester for sintering device flue gas circulation, comprise primary dust removing device casing and secondary ash collector casing, described primary dust removing device casing and secondary ash collector casing are interconnected, the entrance of described primary dust removing device casing is connected with inlet pipeline, in described primary dust removing device casing, horizontal cyclone assembly is installed, mounting part part is provided with in described secondary ash collector casing, the bottom of described mounting part part is provided with vertical cyclone assembly, described vertical cyclone assembly upper end is connected with air duct inlet, described wireway outlet is positioned at the purified gas space of secondary ash collector casing, described purified gas space is connected with outlet conduit, ash bucket is equipped with under described primary dust removing device casing and secondary ash collector casing.
Described mounting part part comprises mounting plate, bottom plate, support frame and hold down gag, is provided with support frame between described mounting plate and bottom plate; Described support frame internal frame is provided with described wireway, is provided with described vertical cyclone assembly under described support frame by securing member; Described hold down gag is for compressing mounting plate and bottom plate.
Flue gas through the process of described horizontal cyclone assembly tangentially enters described vertical cyclone assembly.
Described outlet conduit and inlet pipeline are tapered pipeline.
Described wireway is seamless steel pipe.
Angle steel is provided with near first three row's wireway of described primary dust removing device casing and secondary ash collector casing junction in described wireway.
The inwall of described primary dust removing device casing and secondary ash collector casing is equipped with heat insulation and wear resistance liner, in described heat insulation and wear resistance liner, is provided with metal dog.
Described ash bucket has the gas transmission pipeline be connected with ash bucket.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: the present invention adopts Horizontal cyclone machine and vertical cyclone device to combine and is arranged to secondary ash collector, wherein, the first order is Horizontal cyclone machine, and the second level is vertical cyclone device, so make that volume of the present invention is little, lightweight, structure is simple, be convenient to install, dedusting dynamics scope is wide, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-efficient multi-pipe double polar dust remover in prior art;
Fig. 2 is structural representation of the present invention;
Fig. 3 is dust collector box body internal insulation structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiments of the present invention relate to a kind of two-stage one dust arrester for sintering device flue gas circulation, as shown in Figure 2, comprise primary dust removing device casing A and secondary ash collector casing B, described primary dust removing device casing A and secondary ash collector casing B is interconnected, the entrance of described primary dust removing device casing A is connected with inlet pipeline 1, in described primary dust removing device casing A, horizontal cyclone assembly 2 is installed, mounting part part 6 is provided with in described secondary ash collector casing B, the bottom of described mounting part part 6 is provided with vertical cyclone assembly 4 by securing member 3, described vertical cyclone assembly 4 upper end is connected with wireway 5 entrance, described wireway 5 outlet is positioned at the purified gas space of secondary ash collector casing B, described purified gas space is connected with outlet conduit 7, ash bucket 8 is equipped with under described primary dust removing device casing A and secondary ash collector casing B.Wherein, the flue gas processed through described horizontal cyclone assembly 2 tangentially enters described vertical cyclone assembly 4, and described outlet conduit 7 and inlet pipeline 1 are tapered pipeline.
Described mounting part part comprises mounting plate, bottom plate, support frame and hold down gag, is provided with support frame between described mounting plate and bottom plate; Described support frame internal frame is provided with described wireway, is provided with described vertical cyclone assembly under described support frame by securing member; Described hold down gag is for compressing mounting plate and bottom plate.Mounting plate and bottom plate adopt thickness 8mm, and material Q450NQR1(Baosteel produces) high-strength weathering steel makes, support frame and girder material used adopt Q450NQR1(Baosteel to produce) high-strength weathering steel Combination Welding forms.Mounting plate and bottom plate adopt high strength exploitation with support frame respectively and adopt resistance to 1000 DEG C of towlines of making pottery to be sealed.
The present invention adopts Horizontal cyclone machine and vertical cyclone device to combine and arranges, the first order is horizontal cyclone assembly, and the second level is vertical cyclone assembly.Core Whirlwind cyclone, the guider material of whirlwind assembly adopt high temperature resistant, anti abrasive high chromium nickel-molybdenum alloy precision casting (KmTbCr26NiMo), and adopt demountable structure.
The 20# seamless steel pipe that wireway adopts Baosteel to produce, wireway in windward side adopts Wear-resistant Treatment, comprises front 3 rows and sets up 10# angle steel as protective device and front 3 row's wireways through coating process.Meet and reach 6 years service life.
Dust collector box body material adopts thickness 8mm, material Q450NQR1(Baosteel produces) high-strength weathering steel makes, insulation and anti-corrosion measure that effectively, Surgery therapy combines are set simultaneously, inside holding is: weld a certain proportion of heat insulation and wear resistance liner 11 at dust collector box body inwall, combine with dividing plate 10, and in heat insulation and wear resistance liner, set up metal dog 9(see Fig. 3); Surgery therapy is: the method that deduster outer surface laying insulation fibre felt and color steel combine.
Attemperator established by ash bucket under dust collector box body, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.Described ash bucket 8 has the gas transmission pipeline 12 be connected with ash bucket 8, and dedusting ash is delivered to sintering machine proportioning room dedusting ash hopper by Pneumatic conveying pipeline.
Workflow of the present invention is as follows: high-temperature flue gas enters import reducer pipe 1, first carries out primary dust removing by horizontal cyclone assembly 2.Flue gas through primary dust removing, homogenizing tangentially enters vertical cyclone assembly 4, carries out two-stage dust removal.Then purified gas space is entered through wireway 5.Purified gas space is connected with outlet reducer pipe 7, and the flue gas after purification and inlet flue gas temperature drop are less than 5 DEG C, guarantee the recycling of high-temperature flue gas sensible heat.Dedusting ash in Horizontal cyclone machine and vertical cyclone device ash bucket, is delivered to sintering machine proportioning room dedusting ash hopper through gas pipeline 12, is again used as sintering deposit raw material.
Be not difficult to find, the present invention adopts Horizontal cyclone machine and vertical cyclone device to combine and is arranged to secondary ash collector, wherein, the first order is Horizontal cyclone machine, and the second level is vertical cyclone device, so makes that volume of the present invention is little, lightweight, structure is simple, be convenient to install, dedusting dynamics scope is wide, and efficiency is high.
Claims (7)
1. the two-stage one dust arrester for sintering device flue gas circulation, comprise primary dust removing device casing (A) and secondary ash collector casing (B), described primary dust removing device casing (A) and secondary ash collector casing (B) are interconnected, the entrance of described primary dust removing device casing (A) is connected with inlet pipeline (1), it is characterized in that, in described primary dust removing device casing (A), horizontal cyclone assembly (2) is installed, mounting part part (6) is provided with in described secondary ash collector casing (B), the bottom of described mounting part part (6) is provided with vertical cyclone assembly (4), described vertical cyclone assembly (4) upper end is connected with wireway (5) entrance, described wireway (5) outlet is positioned at the purified gas space of secondary ash collector casing (B), described purified gas space is connected with outlet conduit (7), ash bucket (8) is equipped with under described primary dust removing device casing (A) and secondary ash collector casing (B), described mounting part part (6) comprises mounting plate, bottom plate, support frame and hold down gag, is provided with support frame between described mounting plate and bottom plate, described support frame internal frame is provided with described wireway (5), is provided with described vertical cyclone assembly (4) under described support frame by securing member (3), described hold down gag is for compressing mounting plate and bottom plate.
2. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, the flue gas processed through described horizontal cyclone assembly (2) tangentially enters described vertical cyclone assembly (4).
3. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, described outlet conduit (7) and inlet pipeline (1) are tapered pipeline.
4. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, described wireway (5) is seamless steel pipe.
5. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, in described wireway (5), be provided with angle steel near first three row's wireway (5) of described primary dust removing device casing (A) and secondary ash collector casing (B) junction.
6. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, the inwall of described primary dust removing device casing (A) and secondary ash collector casing (B) is equipped with heat insulation and wear resistance liner (11), in described heat insulation and wear resistance liner (11), is provided with metal dog (9).
7. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, described ash bucket (8) has the gas transmission pipeline (12) be connected with ash bucket (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310168567.5A CN103272441B (en) | 2013-05-08 | 2013-05-08 | Two-stage integrated dust-collecting device for flue gas circulation of sintering machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310168567.5A CN103272441B (en) | 2013-05-08 | 2013-05-08 | Two-stage integrated dust-collecting device for flue gas circulation of sintering machine |
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| CN103272441A CN103272441A (en) | 2013-09-04 |
| CN103272441B true CN103272441B (en) | 2015-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105311907A (en) * | 2014-12-05 | 2016-02-10 | 李正福 | Combined dust removing device and method for sintering machine head |
| CN105318734A (en) * | 2015-03-21 | 2016-02-10 | 李正福 | Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2684125Y (en) * | 2004-03-22 | 2005-03-09 | 孙伟东 | Novel fume cleaning and dedusting device utilizing waste heat |
| CN202482264U (en) * | 2012-03-09 | 2012-10-10 | 陕西蓝银河环保设备工程有限公司 | Full-efficiency combined type dedusting integrated device for treating coking flue gas |
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2013
- 2013-05-08 CN CN201310168567.5A patent/CN103272441B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2684125Y (en) * | 2004-03-22 | 2005-03-09 | 孙伟东 | Novel fume cleaning and dedusting device utilizing waste heat |
| CN202482264U (en) * | 2012-03-09 | 2012-10-10 | 陕西蓝银河环保设备工程有限公司 | Full-efficiency combined type dedusting integrated device for treating coking flue gas |
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| CN103272441A (en) | 2013-09-04 |
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