CN201981216U - Long-distance injection device for coal powder injection of blast furnace - Google Patents
Long-distance injection device for coal powder injection of blast furnace Download PDFInfo
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- CN201981216U CN201981216U CN2011200569391U CN201120056939U CN201981216U CN 201981216 U CN201981216 U CN 201981216U CN 2011200569391 U CN2011200569391 U CN 2011200569391U CN 201120056939 U CN201120056939 U CN 201120056939U CN 201981216 U CN201981216 U CN 201981216U
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Abstract
The utility model relates to a long-distance injection device for coal powder injection of a blast furnace, belonging to the technical field of blast furnace coal powder injection equipment in metallurgy industry. The injection device comprises a coal transmission pipeline (16), gas supplementing air pipelines (15, 20), an adjustable gas supply device and a boost type gas supply device; the adjustable gas supply device and the boost type gas supply device are arranged on the coal powder transmission pipeline and the adjustable gas filler and the boost type gas filler are connected with the gas supply air pipelines respectively. The long-distance injection device has the beneficial effects are that: technical process and facilities for remote injection are simplified, engineering investment is reduced and intermediate links for injecting coal powder are reduced, the injection pressure is high and equipment maintenance capacity is comparatively smaller; and unsafe factors can be greatly reduced for injecting flammable and explosive coal powder, the distance for injecting coal powder to the blast furnace is long, and stabled injection of coal powder can be realized according to the changes of working conditions, therefore, the device is more suitable for practical application.
Description
Technical field:
The utility model relates to the remote blowing device of a kind of pulverized coal injection, belongs to metallurgy industry blast-furnace coal powder injection equipment technical field.
Background technology:
Pulverized coal injection in blast furnace has become the important measures that reduce coke ratio, improve the blast furnace operating index.At present, present blast furnace blowing mainly is divided into the direct winding-up and the dual mode of jetting indirectly, and existing problems are: directly the distance of winding-up is shorter, generally is useful in pulverized coal preparation station and blast furnace apart from the situation less than 300 meters; The distance of indirect winding-up, but middle-chain is many, unsafe factor is many, and jetting pressure is lower, and the maintenance of equipment amount is bigger, the engineering construction investment height, floor space is big.
The utility model content:
The utility model purpose provides the remote blowing device of a kind of pulverized coal injection, the jetting pressure height, the maintenance of equipment amount is less, to the inflammable and explosive coal dust of jetting, can reduce unsafe factor greatly, make the distance of pulverized coal injection in blast furnace both far away, can realize the stable winding-up of coal dust again, solve the problems referred to above that background technology exists according to the variation of operating mode.
The technical solution of the utility model is: the remote blowing device of pulverized coal injection, comprise convey coal pipe, tonifying Qi airduct road, adjustable air compensating device, assisted air compensation device, adjustable air compensating device and assisted air compensation device are set on convey coal pipe, and adjustable air compensating device and assisted air compensation device are connected tonifying Qi airduct road separately respectively.
Also be provided with the back powder pipeline on the said convey coal pipe, when the blast furnace long period stopped coal powder injection, the coal dust in the winding-up jar returned Pulverized Coal Bin by the back powder pipeline, guaranteed the mobile of coal dust in winding-up jar and the Pulverized Coal Bin.
Said adjustable air compensating device is serially connected in the convey coal pipe, comprise stationary housing, movable housing, stationary housing is provided with the coal dust import, movable housing is provided with discharge, is connected with convey coal pipe respectively, movable housing, stationary housing mate slip mutually, can regulate tonifying Qi pressure; Stationary housing is provided with the tonifying Qi import, be connected with tonifying Qi airduct road, on tonifying Qi airduct road, be provided with aeration valve, the adjustable air compensating device is regulated the height of tonifying Qi wind pressure by the size of regulating tonifying Qi wind and entering the coal chute road junction, the height of tonifying Qi wind pressure is relevant with the coal dust fed distance again, and the effect of adjustable air compensating device is the pressure of adjusting in the convey coal pipe.
Said assisted air compensation device is serially connected in the convey coal pipe, the housing of assisted air compensation device is provided with coal dust import and discharge, be connected with convey coal pipe respectively, housing is provided with the tonifying Qi import, be connected with the tonifying Qi airduct road of assisted air compensation device, on this tonifying Qi airduct road, be provided with aeration valve, the discharge pipeline point-blank on the tonifying Qi airduct road of assisted air compensation device and the housing, be provided with a baffle plate that can swing in the housing of assisted air compensation device, coal dust is pushed baffle plate open by coal dust import on the housing and is entered in the housing, enters convey coal pipe from discharge then under the thrust of tonifying Qi wind.The effect of assisted air compensation device is to help to advance coal dust advancing in convey coal pipe.
Distance according to the winding-up distance can be provided with one or more assisted air compensation devices at convey coal pipe, guarantees the stability of remote winding-up.
The utility model is provided with tensimeter on the convey coal pipe before and after assisted air compensation device, the adjustable air compensating device.
Adopt the utility model, coal injection is by the secondary air compensating of adjustable air compensating device, on convey coal pipe, carry, under manometric measurement, can in position install the assisted air compensation device additional according to the pressure of sector in the pipeline, by the tensimeter registration, regulate the tonifying Qi air quantity and give thrust of coal dust again, the distance that makes it to carry is farther.
The beneficial effects of the utility model: simplified remote blowing process flow process and facility, reduced construction investment and reduced the middle-chain of coal injection, the jetting pressure height, the maintenance of equipment amount is less; To the inflammable and explosive coal dust of jetting, can reduce unsafe factor greatly, make the distance of pulverized coal injection in blast furnace not only far away but also can realize according to the variation of operating mode the stable winding-up of coal dust being suitable for practicality more.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model embodiment;
Among the figure: tensimeter 1,7,8,9,14; Defeated coal valve 2; Aeration valve 3,11; Movable housing 4; Back powder valve 5; Trip valve 6,10,13; Housing 12; Tonifying Qi airduct road 15,20; Convey coal pipe 16; Back powder pipeline 17; Stationary housing 18; Baffle plate 19.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
The remote blowing device of pulverized coal injection, comprise convey coal pipe 16, tonifying Qi airduct road 15 and 20, adjustable air compensating device, assisted air compensation device, adjustable air compensating device and assisted air compensation device are set on convey coal pipe, and adjustable air compensating device and assisted air compensation device are connected tonifying Qi airduct road separately respectively.Also be provided with back powder pipeline 17 on the said convey coal pipe, the back powder pipeline is provided with back powder valve 5, and when the blast furnace long period stopped coal powder injection, the coal dust in the winding-up jar returned Pulverized Coal Bin by the back powder pipeline, guarantees the mobile of coal dust in winding-up jar and the Pulverized Coal Bin.
Said adjustable air compensating device is serially connected in the convey coal pipe, comprise stationary housing 18, movable housing 4, stationary housing is provided with the coal dust import, movable housing is provided with discharge, is connected with convey coal pipe respectively, movable housing, stationary housing mate slip mutually, can regulate tonifying Qi pressure; Stationary housing is provided with the tonifying Qi import, be connected with tonifying Qi airduct road 15, on tonifying Qi airduct road, be provided with aeration valve 3, the adjustable air compensating device is regulated the height of tonifying Qi wind pressure by the size of regulating tonifying Qi wind and entering the coal chute road junction, the height of tonifying Qi wind pressure is relevant with the coal dust fed distance again, and the effect of adjustable air compensating device is the pressure of adjusting in the convey coal pipe.
Said assisted air compensation device is serially connected in the convey coal pipe, the housing 12 of assisted air compensation device is provided with coal dust import and discharge, be connected with convey coal pipe respectively, housing is provided with the tonifying Qi import, be connected with the tonifying Qi airduct road 20 of assisted air compensation device, on this tonifying Qi airduct road, be provided with aeration valve 11, the discharge pipeline point-blank on the tonifying Qi airduct road of assisted air compensation device and the housing, be provided with a baffle plate that can swing 19 in the housing of assisted air compensation device, coal dust is pushed baffle plate open by coal dust import on the housing and is entered in the housing, enters convey coal pipe from discharge then under the thrust of tonifying Qi wind.The effect of assisted air compensation device is to help to advance coal dust advancing in convey coal pipe.
The utility model is provided with a plurality of tensimeters 1,7,8,9,14 on the convey coal pipe before and after assisted air compensation device, the adjustable air compensating device, convey coal pipe is provided with a plurality of trip valves 6,10,13.
With reference to accompanying drawing 1, the embodiment working process: convey coal pipe 16 left sides connect the winding-up jar, and the right side connects strainer, divider.At first only open aeration valve 3 when blowing, successively open trip valve 6,10,13 again, guarantee that the pressure in the pipeline is higher than hot-blast pressure, open aeration valve 11 when being necessary to blast furnace.Open defeated coal valve 2 when delivering coal to blast furnace, if opening aeration valve 11(aeration valve 11 after coal dust is transported to blast furnace again is the state of opening before delivering coal, the pressure that requires to guarantee tensimeter 9 is higher than hot-blast pressure), require the pressure of the pressure of tensimeter 9 less than tensimeter 8.Technical requirements in the present embodiment: manometric pressure value is descending is followed successively by for each: tensimeter 1, tensimeter 7, tensimeter 8, tensimeter 9, tensimeter 14, hot-blast pressure.
Claims (6)
1. remote blowing device of pulverized coal injection, it is characterized in that comprising convey coal pipe (16), tonifying Qi airduct road (15,20), adjustable air compensating device, assisted air compensation device, adjustable air compensating device and assisted air compensation device are set on convey coal pipe, and adjustable air compensating device and assisted air compensation device are connected tonifying Qi airduct road separately respectively.
2. according to the remote blowing device of the described pulverized coal injection of claim 1, it is characterized in that also being provided with on the said convey coal pipe back powder pipeline (17).
3. according to claim 1 or the 2 described remote blowing devices of pulverized coal injection, it is characterized in that said adjustable air compensating device is serially connected in the convey coal pipe, comprise stationary housing (18), movable housing (4), stationary housing is provided with the coal dust import, movable housing is provided with discharge, be connected with convey coal pipe respectively, movable housing, stationary housing mate slip mutually; Stationary housing is provided with the tonifying Qi import, is connected with tonifying Qi airduct road (15), is provided with aeration valve (3) on tonifying Qi airduct road.
4. according to claim 1 or the 2 described remote blowing devices of pulverized coal injection, it is characterized in that said assisted air compensation device is serially connected in the convey coal pipe, the housing of assisted air compensation device (12) is provided with coal dust import and discharge, be connected with convey coal pipe respectively, housing is provided with the tonifying Qi import, be connected with the tonifying Qi airduct road (20) of assisted air compensation device, on this tonifying Qi airduct road, be provided with aeration valve (11), the discharge pipeline is provided with a baffle plate that can swing (19) point-blank on the tonifying Qi airduct road of assisted air compensation device and the housing in the housing of assisted air compensation device.
5. according to claim 1 or the 2 described remote blowing devices of pulverized coal injection, it is characterized in that on convey coal pipe, being provided with one or more assisted air compensation devices.
6. according to claim 1 or the 2 described remote blowing devices of pulverized coal injection, it is characterized in that on the convey coal pipe before and after assisted air compensation device, the adjustable air compensating device a plurality of tensimeters being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200569391U CN201981216U (en) | 2011-03-07 | 2011-03-07 | Long-distance injection device for coal powder injection of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200569391U CN201981216U (en) | 2011-03-07 | 2011-03-07 | Long-distance injection device for coal powder injection of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201981216U true CN201981216U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200569391U Expired - Fee Related CN201981216U (en) | 2011-03-07 | 2011-03-07 | Long-distance injection device for coal powder injection of blast furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN201981216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031230A (en) * | 2022-06-09 | 2022-09-09 | 安徽锐星节能科技有限公司 | Omnibearing kiln tail coal sprayer of combustor, use method and combustor |
| CN115369197A (en) * | 2022-08-19 | 2022-11-22 | 重庆钢铁股份有限公司 | Method for long-distance conveying of pulverized coal by blast furnace and coal injection system of blast furnace |
-
2011
- 2011-03-07 CN CN2011200569391U patent/CN201981216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031230A (en) * | 2022-06-09 | 2022-09-09 | 安徽锐星节能科技有限公司 | Omnibearing kiln tail coal sprayer of combustor, use method and combustor |
| CN115369197A (en) * | 2022-08-19 | 2022-11-22 | 重庆钢铁股份有限公司 | Method for long-distance conveying of pulverized coal by blast furnace and coal injection system of blast furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140307 |