CN103272441A - 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 PDF

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Publication number
CN103272441A
CN103272441A CN 201310168567 CN201310168567A CN103272441A CN 103272441 A CN103272441 A CN 103272441A CN 201310168567 CN201310168567 CN 201310168567 CN 201310168567 A CN201310168567 A CN 201310168567A CN 103272441 A CN103272441 A CN 103272441A
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CN
China
Prior art keywords
casing
flue gas
dust
sintering
stage
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CN 201310168567
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Chinese (zh)
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CN103272441B (en
Inventor
李正福
李咸伟
崔健
陈君明
刘辉
贾秀风
杨红芸
安守滨
石磊
Original Assignee
宁波钢铁有限公司
宝山钢铁股份有限公司
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Priority to CN201310168567.5A priority Critical patent/CN103272441B/en
Publication of CN103272441A publication Critical patent/CN103272441A/en
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Publication of CN103272441B publication Critical patent/CN103272441B/en

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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

A kind of two-stage one dust arrester for the sintering device flue gas circulation

Technical field

The present invention relates to the dedusting technology field, particularly relate to a kind of two-stage one dust arrester for the 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 that are not utilized effectively as yet, the sintered discharge gas waste heat is wherein main a kind of.During " 12 ", the recycle utilization of steel industry iron ore sintering machine high-temperature flue gas will be promoted successively.

The sintering device flue gas recycle utilization refers to: the sintering machine partial hot waste gas is re-introduced in the sintering process, when the elevated temperature heat flue gas cycles through sinter bed again, the high temperature sensible heat of flue gas is all supplied with sinter mixture, CO in the circulating flue gas rekindles, and reaches the effect of UTILIZATION OF VESIDUAL HEAT IN, saving sintering process energy consumption.In addition, organic pollutions such as the dioxin in the hot flue gas, PAHs, VOC are decomposed by fierceness during up to the sintering belt more than 1300 ℃ in by sinter bed, NOx also can significantly reduce the discharge capacity of organic pollutions such as NOx, dioxin by thermal decomposition by partial destruction by the high temperature sintering band time.

The sintering device flue gas circulatory system needs supporting a kind of efficiently succinct, resistant to elevated temperatures flue gas ash removal, purifier.Existing patent announcement number be the high temperature multitube two-stage dust removal device of CN2550663Y, and employing shutter one-level inertial dust collection adds the sub-multitube two-stage dust removal of whirlwind, and efficiency of dust collection is 90~92%.Obviously because this deduster adopts inertial dust collection, and inertial dust collection influences efficiency of dust collection, increase the device space.As shown in Figure 1, the patent No. is the efficient multitube two-stage dust removal device of ZL200820218147.8, and this patent two-stage all arranges vertical multi-tube dust cleaner, and equipment is longer, difficult arrangement in the sintering device flue gas circulatory system.In addition, a kind of vertical cyclone dust collectors only are installed, are influenced efficiency of dust collection.

Summary of the invention

Technical problem to be solved by this invention provides a kind of two-stage one dust arrester for the 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: a kind of two-stage one dust arrester for the sintering device flue gas circulation is provided, comprise primary dust removing device casing and secondary ash collector casing, described primary dust removing device casing and secondary ash collector casing interconnect, the entrance of described primary dust removing device casing links to each other with inlet pipeline, in the described primary dust removing device casing horizontal cyclone assembly is installed, be provided with in the described secondary ash collector casing and install and fix parts, the described bottom that installs and fixes parts is equipped with vertical whirlwind assembly, described vertical whirlwind assembly upper end links to each other with the wireway entrance, described wireway outlet is positioned at the purified gas space of secondary ash collector casing, and described purified gas space links to each other with outlet conduit; Be equipped with ash bucket under described primary dust removing device casing and the secondary ash collector casing.

The described parts that install and fix comprise mounting plate, bottom plate, support frame and hold down gag, are provided with support frame between described mounting plate and the bottom plate; Described support frame internal frame is provided with described wireway, by securing member described vertical whirlwind assembly is installed under the described support frame; Described hold down gag is used for compressing mounting plate and bottom plate.

The flue gas of handling through described horizontal cyclone assembly tangentially enters described vertical whirlwind assembly.

Described outlet conduit and inlet pipeline are tapered pipeline.

Described wireway is seamless steel pipe.

First three row's wireway near described primary dust removing device casing and secondary ash collector casing junction in the described wireway is provided with angle steel.

Be equipped with the heat insulation and wear resistance liner on the inwall of described primary dust removing device casing and secondary ash collector casing, be provided with the metal dog in the described heat insulation and wear resistance liner.

Described ash bucket has the gas transmission pipeline that links to each other with ash bucket.

Beneficial effect

Owing to adopted above-mentioned technical scheme, the present invention compared with prior art, have following advantage and good effect: the present invention adopts horizontal cyclone device and the combination of vertical cyclone to be arranged to secondary ash collector, wherein, the first order is the horizontal cyclone device, and the second level is vertical cyclone, so make volume of the present invention little, in light weight, simple in structure, be convenient to install, dedusting dynamics scope is wide, the efficient height.

Description of drawings

Fig. 1 is the structural representation of efficient multitube two-stage dust removal device in the prior art;

Fig. 2 is structural representation of the present invention;

Fig. 3 is deduster casing internal insulation structure schematic diagram of the present invention.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Embodiments of the present invention relate to a kind of two-stage one dust arrester for the 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 interconnect, the entrance of described primary dust removing device casing A links to each other with inlet pipeline 1, in the described primary dust removing device casing A horizontal cyclone assembly 2 is installed, be provided with in the described secondary ash collector casing B and install and fix parts 6, the described bottom that installs and fixes parts 6 is equipped with vertical whirlwind assembly 4 by securing member 3, described vertical whirlwind assembly 4 upper ends link to each other with wireway 5 entrances, described wireway 5 outlets are positioned at the purified gas space of secondary ash collector casing B, and described purified gas space links to each other with outlet conduit 7; Be equipped with ash bucket 8 under described primary dust removing device casing A and the secondary ash collector casing B.Wherein, the flue gas of handling through described horizontal cyclone assembly 2 tangentially enters described vertical whirlwind assembly 4, and described outlet conduit 7 and inlet pipeline 1 are tapered pipeline.

The described parts that install and fix comprise mounting plate, bottom plate, support frame and hold down gag, are provided with support frame between described mounting plate and the bottom plate; Described support frame internal frame is provided with described wireway, by securing member described vertical whirlwind assembly is installed under the described support frame; Described hold down gag is used 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, the used material of support frame and girder adopts the Q450NQR1(Baosteel to produce) the high-strength weathering steel Combination Welding forms.Mounting plate adopts high-strength bolt to be connected with support frame respectively with bottom plate and adopts anti-1000 ℃ of pottery towlines to be sealed.

The present invention adopts horizontal cyclone device and the combination of vertical cyclone to arrange that the first order is the horizontal cyclone assembly, and the second level is vertical whirlwind assembly.Core whirlwind of whirlwind assembly, guider material 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, the wireway in the windward side adopts Wear-resistant Treatment, comprises that preceding 3 rows set up the 10# angle steel and handle through coating as protective device and preceding 3 row's wireways.Satisfy and reach 6 years service life.

The deduster tank material adopts thickness 8mm, material Q450NQR1(Baosteel product) high-strength weathering steel is made, insulation and anti-corrosion measure that effectively inside and outside insulation combines are set simultaneously, interior insulation is: weld a certain proportion of heat insulation and wear resistance liner 11 at the deduster cabinet wall, combine with dividing plate 10, and in the heat insulation and wear resistance liner, set up metal dog 9(and see Fig. 3); Outer insulation is: the method that deduster outer surface laying insulation fibre felt and color steel combine.

Ash bucket under the deduster casing is established attemperator, and installs, descends level-sensing device, electric heater unit and hopper wall vibrator.Described ash bucket 8 has the gas transmission pipeline 12 that links to each other 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, at first carries out primary dust removing by horizontal cyclone assembly 2.Flue gas through primary dust removing, homogenizing tangentially enters vertical whirlwind assembly 4, carries out two-stage dust removal.Enter the purified gas space through wireway 5 then.The purified gas space links to each other with outlet reducer pipe 7, and flue gas after being purified and inlet flue gas temperature drop are guaranteed the recycling of high-temperature flue gas sensible heat less than 5 ℃.Dedusting ash in horizontal cyclone device and the vertical cyclone ash bucket is delivered to sintering machine proportioning room dedusting ash hopper through gas pipeline 12, again as the sintering deposit raw material.

Be not difficult to find that the present invention adopts horizontal cyclone device and the combination of vertical cyclone to be arranged to secondary ash collector, wherein, the first order is the horizontal cyclone device, and the second level is vertical cyclone, so makes volume of the present invention little, in light weight, simple in structure, be convenient to install, dedusting dynamics scope is wide, the efficient height.

Claims (8)

1. one kind is used for the two-stage one dust arrester that sintering device flue gas circulates, 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) interconnect, the entrance of described primary dust removing device casing (A) links to each other with inlet pipeline (1), it is characterized in that, horizontal cyclone assembly (2) is installed in the described primary dust removing device casing (A), be provided with in the described secondary ash collector casing (B) and install and fix parts (6), the described bottom that installs and fixes parts (6) is equipped with vertical whirlwind assembly (4), described vertical whirlwind assembly (4) upper end links to each other with wireway (5) entrance, described wireway (5) outlet is positioned at the purified gas space of secondary ash collector casing (B), and described purified gas space links to each other with outlet conduit (7); Be equipped with ash bucket (8) under described primary dust removing device casing (A) and the secondary ash collector casing (B).
2. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, the described parts (6) that install and fix comprise mounting plate, bottom plate, support frame and hold down gag, are provided with support frame between described mounting plate and the bottom plate; Described support frame internal frame is provided with described wireway (5), by securing member (3) described vertical whirlwind assembly (4) is installed under the described support frame; Described hold down gag is used for compressing mounting plate and bottom plate.
3. the two-stage one dust arrester for the sintering device flue gas circulation according to claim 1 is characterized in that, the flue gas of handling through described horizontal cyclone assembly (2) tangentially enters described vertical whirlwind assembly (4).
4. the two-stage one dust arrester for the sintering device flue gas circulation according to claim 1 is characterized in that described outlet conduit (7) and inlet pipeline (1) are tapered pipeline.
5. the two-stage one dust arrester for the sintering device flue gas circulation according to claim 1 is characterized in that described wireway (5) is seamless steel pipe.
6. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that first three the row's wireway (5) near described primary dust removing device casing (A) and secondary ash collector casing (B) junction in the described wireway (5) is provided with angle steel.
7. the two-stage one dust arrester for sintering device flue gas circulation according to claim 1, it is characterized in that, be equipped with heat insulation and wear resistance liner (11) on the inwall of described primary dust removing device casing (A) and secondary ash collector casing (B), be provided with metal dog (9) in the described heat insulation and wear resistance liner (11).
8. the two-stage one dust arrester for the sintering device flue gas circulation according to claim 1 is characterized in that described ash bucket (8) has the gas transmission pipeline (12) that links to each other with ash bucket (8).
CN201310168567.5A 2013-05-08 2013-05-08 Two-stage integrated dust-collecting device for flue gas circulation of sintering machine CN103272441B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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