CN202099308U - Axial-flow type cyclone dust collector for blast-furnace gas - Google Patents
Axial-flow type cyclone dust collector for blast-furnace gas Download PDFInfo
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- CN202099308U CN202099308U CN2011200929344U CN201120092934U CN202099308U CN 202099308 U CN202099308 U CN 202099308U CN 2011200929344 U CN2011200929344 U CN 2011200929344U CN 201120092934 U CN201120092934 U CN 201120092934U CN 202099308 U CN202099308 U CN 202099308U
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- dust collector
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- water conservancy
- conservancy diversion
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Abstract
An axial-flow type cyclone dust collector for blast-furnace gas belongs to the field of blast-furnace ironmaking and dust-removing technologies, comprises a cyclone dust collector barrel, a gas ingress pipe, a flow guiding short pipe, a gas ingress pipe, a reflective cone, a corundum wear-resisting lining plate, an amorphous fireproofing spraying coating and a manhole, and is characterized in that the gas ingress pipe (2) extends into the cyclone dust collector barrel (1); the rectangular flow guiding short pipe (4) is welded at the tail end of the pipe opening of the gas ingress pipe (2) and is tangent to the barrel wall; and the reflective cone (5) is arranged at an ash bucket. The axial-flow type cyclone dust collector has the advantages that the flow velocity, the flow direction and the abrasion resistance of the flow guiding short pipe can be completely consistent with or better than those of the existing dust collector; the structure of the axial-flow type cyclone dust collector is simpler, the weight of the equipment is light, the construction is more convenient, and the axial-flow type cyclone dust collector is good for popularization.
Description
Technical field
The utility model belongs to blast furnace ironmaking dedusting technology field, and a kind of blast furnace gas axial-flow type tornado dust collector particularly are provided, and is applicable to the thick dedusting of blast furnace gas.
Background technology
At present, blast furnace gas purification is meant dust-laden coal gas through getting into wet method after the gravitational precipitator thick dedusting or nonaqueous dust cleaner carries out meticulous dedusting again, and making dustiness drop to a milligram level level can use.The about 55-60% of gravitational precipitator efficiency of dust collection, this efficient direct relation dry method dust work quality thereafter.For the dry method coal gas dust removal, hope macrobead dust as much as possible is removed in advance, reduce its ash load, improve working condition.
Raw gas dustiness behind the gravitational dust collection normally is about 6～10g/m at present
3, 10～20g/m at most
3, therefore obviously too much, need to improve.Substituting gravitational precipitator from current development trend tornado dust collector should be a developing direction, so adopt which kind of tornado dust collector to improve the new problem that thick efficiency of dust collection is a current research.
Traditional tornado dust collector are that inlet tube is the tangent line entry mode, and structure formation is seen Fig. 1.The axial type tornado dust collector have appearred again in the home and abroad in recent years, and promptly air flow line axially gets into along fly-ash separator from the top, in tube along the wall Rotary dust collecting.Though be axial; Inducer or the downward-sloping inlet tube that in fact will pass through inclination make air flow line be oblique below to flow along the barrel rotation; Air flow line is existing axially to have the tangential again, meets the air motion rule more, and therefore centrifugal energy of rotation obtains better efficiency of dust collection.Existing axial cyclone duster structure form is seen Fig. 2, Fig. 3, and this is the axial-flow type tornado dust collector of two kinds of different structures.
Existing axial-flow type tornado dust collector are used more widely, and dust removing effects is fine, and efficient can reach about 85%.
The axial flow tornado dust collector of Fig. 2; Simple in structure and traditional difference is an arm structure, and is more even than the air inlet of single tube inlet; And uptake has certain pitch angle downwards; Therefore have the axial flow factor, meet the air motion direction, good efficiency of dust collection is arranged under action of centrifugal force equally.Weak point is that inlet pipe gets into from both sides, and big spiral arm size is arranged; Two inlet pipes are because of being rectangle, and the plane tube wall will be made pressure-resistance structure, and therefore a lot of grid type stiffening webs are arranged.Once improper because of building, the back rectangle tube wall of going into operation is because of withstand voltage the distortion not.
Fig. 3 is a kind of water conservancy diversion slice structure, and blade is installed in the housing border, can adjust blade angle and the quantity efficiency of dust collection to obtain.Weak point is an inducer mounting structure more complicated, and needs special high-abrasive material opposing wearing and tearing.Though blade angle is adjustable, be difficult to behind the actual motion adjust.Moreover housing will be opened a lot of flange holes, also influences housing bulk strength and stopping property.
Summary of the invention
The purpose of the utility model is to provide a kind of blast furnace gas axial-flow type tornado dust collector, has used the new texture of the axial tornado dust collector of water conservancy diversion short tube type instead, has both realized the axial flow rotation, and structure is fairly simple again, has overcome the deficiency of existing tornado dust collector.
The utility model comprises tornado dust collector cylindrical shell, coal gas ingress pipe, water conservancy diversion short tube, gas export control, reflection cone, corundum matter abrasion-proof backing block, amorphous refractory materials sprayed coating, manhole; It is characterized in that: coal gas ingress pipe 2 reaches in the tornado dust collector cylindrical shell 1, and the mouth of pipe end of coal gas ingress pipe 2 is welded with rectangle water conservancy diversion short tube 4, and tangent with barrel, establishes reflection cone 5 at the ash bucket position.
Water conservancy diversion short tube 4 downward inclination angles (10 °～15 °).
Water conservancy diversion short tube 4 and cylindrical shell 1 wash away strong position corundum matter abrasion-proof backing block 7 are set, and water conservancy diversion short tube 4 and cylindrical shell 1 other positions spray amorphous refractory materials sprayed coating 8; Cylindrical shell is equipped with inspection manhole 6 up and down.
Water conservancy diversion short tube 4 is made the shaped form close with cylindrical shell curvature, rectangular cross-section or inclination angle; Gas velocity can make every effort to obtain best efficiency of dust collection with existing close or different.
The usefulness of gas cutting when dust remover roof is provided with intercepter valve (IV) as damping down.The existing closed blank-plate valve that is, troublesome poeration, and also volume is very big.
Convenient in order to overhaul with block clearing, particularly check and repair liner plate, be provided with manhole in the fly-ash separator region of interest.
The utility model adopts the inclined water conservancy diversion short tube that dips down, and certain inclination angle is arranged, and purpose is to make air-flow increase axial flow, more meets the air current flow direction, has strengthened the centrifugal dust-removing effect.Rectangle short tube depth-width ratio, gas velocity, angle of inclination all can be identical with existing form, also can further optimize through practice and research.Therefrom flow out through gas export control 3 on the mind-set after the rotational flow gas dedusting.For preventing to roll settled dust when rotational flow gas from flowing out, establish reflection cone 5 at the ash bucket position and stop.
The principle of utility model is that blast furnace gas is divided into two pipelines entering tornado dust collector behind downtake, and stretches into barrel.Coal gas ingress pipe termination is welded with the rectangle water conservancy diversion short tube that is certain tilt angled down setting along wall coal gas is imported, and makes coal gas along barrel rotation carrying out centrifugal dust-removing.After air-flow was removed the macrobead dust, upwards flowed out through delivery line the position from central division.For preventing that dedusting ash from rolling once more, the ash bucket position is provided with the reflection cone and stops.
Core point of the present invention is to establish inner water conservancy diversion short tube completion air-flow and flows along the axial rotation of barrel, and with inducer that replaces complicacy or the double square inlet tube that gets into from the outside, thereby structure is simpler, accomplishes the axial flow motion too.All gas velocities, angle, the rectangular cross-section size can be identical with existing form, thereby efficiency of dust collection is also identical.Can also find the parameter that is more suitable for through optimizing.Because rectangle water conservancy diversion short tube is located at inside, does not have inside and outside differential pressure, therefore do not reinforce problem.
The scheme that the utility model proposes is seen Fig. 4～7
Two coal gas ingress pipes stretch into the tornado dust collector cylindrical shell, are welded with rectangle water conservancy diversion short tube in coal gas ingress pipe termination, made it certain angle of declination and with the setting of barrel tangent line, air-flow is tangent line entering and certain tilt angled down is arranged.Gas velocity and grain direction can be regulated through rectangle entrance size and water conservancy diversion short tube angle design.
Mozzle inwall and airflow scouring position should stud with fused alumina zirconia or corundum matter liner plate, and other positions spray amorphous refractory material.Fly-ash separator is established inspection manhole at certain position.
The advantage of the utility model is that water conservancy diversion short tube flow velocity, the flow direction and wear-resisting problem can accomplish and existing fly-ash separator effect in full accord or better that just structure is simpler, and weight of equipment is light, and popularization is suitable in easy construction.Not only can replace existing gravitational precipitator, also identical with present existing axial-flow type tornado dust collector effect.Characteristics are simple structures, are easy to make and promote the use of.
Description of drawings
Fig. 1 is that inlet tube is the stereographic map of tangent line entry mode for traditional tornado dust collector.
Fig. 2 is axial flow tornado dust collector stereographic maps.
Fig. 3 is a kind of water conservancy diversion chip structural representation.
Fig. 4 is the tornado dust collector stereographic map.
Fig. 5 is the tornado dust collector vertical view.
Fig. 6 is the tornado dust collector side-view.Wherein, tornado dust collector cylindrical shell 1, coal gas ingress pipe 2, gas export control 3, water conservancy diversion short tube 4, reflection cone 5, manhole 6, corundum matter abrasion-proof backing block 7, amorphous refractory materials sprayed coating 8.
Fig. 7 is the tornado dust collector side-view.
Embodiment
Fig. 4～Fig. 7 is a kind of embodiment of the utility model.
The utility model comprises tornado dust collector cylindrical shell, coal gas ingress pipe, water conservancy diversion short tube, gas export control, reflection cone, corundum matter abrasion-proof backing block, amorphous refractory materials sprayed coating, manhole; It is characterized in that: coal gas ingress pipe 2 reaches in the tornado dust collector cylindrical shell 1, and the mouth of pipe end of coal gas ingress pipe 2 is welded with rectangle water conservancy diversion short tube 4, and tangent with barrel, establishes reflection cone 5 at the ash bucket position.
Blast furnace gas gets into cylindrical shell through two coal gas ingress pipes 2 through tornado dust collector 1 top.Ingress pipe reaches in the cylindrical shell, and the coal gas ingress pipe mouth of pipe is welded with rectangle water conservancy diversion short tube 4, and tangent with barrel; Rectangle short tube 4 can be horizontally disposed with, tangential admission, and this utility model adopts the inclined that dips down; Certain inclination angle is arranged; Purpose is to make air-flow that certain axial flow direction arranged, and more meets the air current flow direction, therefore helps centrifugal dust-removing.Rectangle short tube depth-width ratio, gas entry speed, angle of inclination all can be identical with existing form, also can further optimize through practice and research to concrete object.
Therefrom flow out through gas export control 3 on the mind-set through the rotational flow gas behind the tornado dust collector.For preventing that rotational flow gas from rolling settled dust, establish reflection cone 5 and stop.
Water conservancy diversion short tube and cylindrical shell are provided with corundum matter abrasion-proof backing block 7 or amorphous refractory materials spray material 8 at different sites.Cylindrical shell is equipped with inspection manhole 6 up and down.
The utility model has been realized the features of axial-flow type tornado dust collector, and from enterprising one-step optimization of structure and improvement, so efficiency of dust collection is high and be more suitable for promoting the use of.
Claims (5)
1. blast furnace gas axial-flow type tornado dust collector comprise tornado dust collector cylindrical shell, coal gas ingress pipe, water conservancy diversion short tube, gas export control, reflection cone, corundum matter abrasion-proof backing block, amorphous refractory materials sprayed coating, manhole; It is characterized in that: coal gas ingress pipe (2) reaches in the tornado dust collector cylindrical shell (1), and the mouth of pipe end of coal gas ingress pipe (2) is welded with rectangle water conservancy diversion short tube (4), and tangent with barrel, establishes reflection cone (5) at the ash bucket position.
2. blast furnace gas axial-flow type tornado dust collector according to claim 1 is characterized in that: downward 10 °～15 ° of water conservancy diversion short tube (4).
3. blast furnace gas axial-flow type tornado dust collector according to claim 1; It is characterized in that: water conservancy diversion short tube (4) and cylindrical shell (1) wash away strong position corundum matter abrasion-proof backing block (7) are set, and water conservancy diversion short tube (4) and other positions of cylindrical shell (1) spray amorphous refractory materials sprayed coating (8); Cylindrical shell is equipped with inspection manhole 6 up and down.
4. blast furnace gas axial-flow type tornado dust collector according to claim 1 is characterized in that: water conservancy diversion short tube (4) is made shaped form, rectangular cross-section or the inclination angle close with cylindrical shell curvature.
5. blast furnace gas axial-flow type tornado dust collector according to claim 1, it is characterized in that: dust remover roof is provided with intercepter valve (IV).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200929344U CN202099308U (en) | 2011-04-01 | 2011-04-01 | Axial-flow type cyclone dust collector for blast-furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200929344U CN202099308U (en) | 2011-04-01 | 2011-04-01 | Axial-flow type cyclone dust collector for blast-furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202099308U true CN202099308U (en) | 2012-01-04 |
Family
ID=45385332
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200929344U Expired - Lifetime CN202099308U (en) | 2011-04-01 | 2011-04-01 | Axial-flow type cyclone dust collector for blast-furnace gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502692A (en) * | 2017-09-26 | 2017-12-22 | 中冶南方工程技术有限公司 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
-
2011
- 2011-04-01 CN CN2011200929344U patent/CN202099308U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502692A (en) * | 2017-09-26 | 2017-12-22 | 中冶南方工程技术有限公司 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |
|
| CX01 | Expiry of patent term |