CN202989183U - Blast furnace pulverized coal injection device - Google Patents
Blast furnace pulverized coal injection device Download PDFInfo
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- CN202989183U CN202989183U CN 201220697021 CN201220697021U CN202989183U CN 202989183 U CN202989183 U CN 202989183U CN 201220697021 CN201220697021 CN 201220697021 CN 201220697021 U CN201220697021 U CN 201220697021U CN 202989183 U CN202989183 U CN 202989183U
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Abstract
The utility model provides a blast furnace pulverized coal injection device. The blast furnace pulverized coal injection device comprises a pulverized bin, a first pipeline, a first nozzle, a second pipeline, a second nozzle, a plurality of injection systems, a plurality of injection tanks, a plurality of blow-off valves, a plurality of blow-off pipelines and a plurality of pipelines, wherein the injection systems, the injection tanks, the blow-of valves, the blow-off pipelines and the pipeline are arranged in parallel, each injection system is arranged corresponding to one injection tank, one blow-off valve, one blow-off pipeline and one pipeline; one end of the first pipeline is connected with a new gas source, the other end of the first pipeline is connected with the first nozzle which is arranged on the lower bin wall of the pulverized coal bin, and an outlet of the first nozzle is formed in the pulverized coal bin; one end of the second pipeline is connected with the second nozzle arranged on the lower bin wall of the pulverized coal bin, the other end of the second pipeline is connected with the pipelines, the other ends of the pipelines are connected with the injection tanks, and regulating valves are arranged on the pipelines. The blast furnace pulverized coal injection device has the beneficial effects that the gas source in the injection tanks are introduced into the first nozzle of the pulverized coal bin through the pipelines and other elements on the pipelines, so as to replace part of the new gas sources, thereby reducing the consumption of injection gas sources.
Description
Technical field
The utility model relates to particularly breeze blowing field, ironmaking equipment field, is specifically related to a kind of fine coal blowing unit of blast.
Background technology
The most of medium that adopts nitrogen to carry as coal dust of existing blast-furnace coal powder injection.The breeze blowing of a blast furnace generally is made of two to three injection systems, is arranged in juxtaposition.The main processes of coal powder injection is generally coal dust by the powder storehouse winding-up tank of packing into, close pressurising in charging valve and the backward tank of diffusion valve, open the coal powder injection valve after reaching certain pressure, coal dust in the winding-up tank is sprayed into blast furnace, after system's winding-up operation finishes, close the coal powder injection valve, open diffusion valve, nitrogen in tank is put into the cloth bag collection machine of Pulverized Coal Bin top or pulverized coal preparation system, the coal dust that wherein contains is recovered, and nitrogen enters atmosphere without any utilization.
Existing a kind of technology that reclaims the nitrogen in the winding-up tank: the winding-up tank that finishes of jetting is communicated with a gas-holder, a pressed gas part in the winding-up tank enters gas-holder and stores, when having the winding-up tank to need pressurising, gas-holder is communicated with this winding-up tank, a part of gas in gas-holder enters this winding-up tank, thereby has reclaimed a part of nitrogen.The weak point of the method is that technique is more complicated, needs the investment gas-holder, takes up room larger, and the rate of recovery is not high.
Also having a kind of method of jetting the tank nitrogen recycling is that a blast furnace arranges three injection systems, the not pressure release immediately of winding-up tank that winding-up wherein is complete, need the winding-up tank of pressurising to be connected but this tank and another are installed powder, a part of pressed gas enters needs the winding-up tank of pressurising to be utilized.There is complex process equally in the method, the deficiency that rate of recovery of nitrogen is not high.
Summary of the invention
The technical problems to be solved in the utility model is, for the defects that exists in prior art, a kind of fine coal blowing unit of blast is provided, and this device is realized the nitrogen recycling utilization ratio of higher winding-up tank with simple structure, simple technical process and lower initial outlay.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be:
A kind of fine coal blowing unit of blast comprises Pulverized Coal Bin, the first pipeline, the first nozzle, second pipe, second nozzle, some injection systems that are arranged in juxtaposition, winding-up tank, diffusion valve, diffuse channel, pipeline; Each injection system correspondence is provided with a winding-up tank, diffusion valve, diffuse channel and pipeline; The first pipeline one end connects new source of the gas, and the other end connects the first nozzle, and the first nozzle is installed on the bottom bulkhead of Pulverized Coal Bin, and the outlet of the first nozzle is in Pulverized Coal Bin; Second pipe one end is connected with second nozzle on the bottom bulkhead that is installed on Pulverized Coal Bin, and the other end is connected with pipeline, and the pipeline the other end is connected with the winding-up tank, and variable valve is installed on pipeline.
In such scheme, on described second pipe, flow control element is installed, this flow control element be one section internal diameter less than the pipeline of the first pipeline or second pipe internal diameter, or choker-line, or orifice plate.
In such scheme, on described second pipe, hydathode is installed.
In such scheme, on described second pipe, well heater is installed.
In such scheme, on described second pipe, reverse checkvalve is installed, its direction is to allow gas to flow in Pulverized Coal Bin.
In such scheme, described second pipe is connected with the first pipeline, by the gas of the first pipeline with by shared the first nozzle of the gas of second pipe and second nozzle.
In such scheme, the end that described pipeline connects the winding-up tank is provided with special purpose interface, and perhaps the diffuse channel with the winding-up tank shares an interface.
In such scheme, described injection system is more than 1 or 1.
Pulverized Coal Bin is used for storing the coal suitable for blowing powder, and the first pipeline is used for new nitrogen is introduced the first nozzle, and the first nozzle is arranged on the bottom of Pulverized Coal Bin, plays rheomorphism.The diffusion valve of injection system is put into Pulverized Coal Bin for the gas in the tank of jetting by diffuse channel.Hydathode is installed, in order to the moisture in the diffused gas of draining on second pipe.Well heater is installed on second pipe, enters the nitrogen of Pulverized Coal Bin in order to heating.Reverse checkvalve is installed on second pipe, enters in order to prevent the new source of the gas that passes into the first pipeline the pipeline that leads to the tank of jetting.Control the pressure of pipeline or the function of flow and realized by variable valve, variable valve has top hole pressure to be regulated and cutting function; Also can realize by flow control element is installed on second pipe, this flow control element can be one section internal diameter less than the pipeline of the first pipeline or second pipe internal diameter, can be also choker-line, can be also orifice plate.Hydathode, well heater, reverse checkvalve, flow control element can be arranged on pipeline, also can be arranged on second pipe, and its built-up sequence, quantity are not done restriction.Can some parts be installed according to circumstances on pipeline or second pipe, other valve can be installed yet.
Be communicated with the second pipe that reclaims nitrogen by the winding-up tank by the first pipeline of new nitrogen, such two kinds of nitrogen just can share the first nozzle and second nozzle by the first pipeline and second pipe.
In the winding-up operation of an injection system, in the winding-up tank of the injection system of at first coal dust in Pulverized Coal Bin being packed into; Then use the high pressure gas that obtain from new source of the gas pressurize and coal dust is sprayed into blast furnace through the valve tank of jet; Then the first nozzle or second nozzle that the gas in tank of jetting is directed at the Pulverized Coal Bin bottom spray into Pulverized Coal Bin, reduce or cut off new source of the gas to the supply of the gas of Pulverized Coal Bin bottom the first nozzle or second nozzle by reverse checkvalve, well heater, hydathode, flow control element and variable valve simultaneously; Finish to change over to when diffusing operation when the winding-up operation at last, open variable valve, in the winding-up tank, gas enters the second nozzle of bottom, powder storehouse through pipeline and second pipe, at this moment the new nitrogen of the first pipeline can be closed, or the gas flow of the first pipeline is reduced.
The beneficial effects of the utility model: the source of the gas in the tank of jetting is introduced the first nozzle of Pulverized Coal Bin by other element on pipeline and pipeline, replaces the new source of the gas of a part, thereby reduces consumption of air source.
Description of drawings
Fig. 1 is the structural representation that the utility model blowing device does not comprise flow control element and reverse checkvalve.
Fig. 2 is the structural representation of the utility model blowing device.
In figure, 1. Pulverized Coal Bin, 2. the first pipeline, 3. the first nozzle, 4. second pipe, 5. second nozzle, 6. reverse checkvalve, 7. well heater, 8. hydathode, 9. flow control element, 10. variable valve, 11. pipelines, 12. diffuse channel, 13. diffusion valves, 14. injection systems, 15. winding-up tanks, 16. valves.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further described in detail.
With reference to shown in Figure 1, fine coal blowing unit of blast described in the utility model comprises Pulverized Coal Bin 1, the first pipeline 2, the first nozzles 3, second pipe 4, second nozzle 5, some injection systems that are arranged in juxtaposition 14, winding-up tank 15, diffusion valve 13, diffuse channel 12, pipeline 11; The first pipeline 2 one ends connect new source of the gas, and the other end connects the first nozzle 3, the first nozzles 3 and is installed on the bottom bulkhead of Pulverized Coal Bin 1, and the outlet of the first nozzle 3 is in Pulverized Coal Bin; Second pipe 4 one ends are connected with second nozzle 5 on the bottom bulkhead that is installed on Pulverized Coal Bin 1, and the other end is connected with pipeline 11, and pipeline 11 the other ends are connected with winding-up tank 15, and variable valve 10 is installed on pipeline 11.
With reference to shown in Figure 2, on described second pipe 4, flow control element 9 is installed, this flow control element 9 is that one section internal diameter is less than the pipeline of the first pipeline 2 or second pipe 4 internal diameters, or choker-line, or orifice plate, control the pressure of pipeline 11 or the function of flow and also can be realized by variable valve 10, this valve can have to be regulated and cutting function.
On described second pipe 4, hydathode 8 is installed.
On described second pipe 4, well heater 7 is installed.
On described second pipe 4, reverse checkvalve 6 is installed, its direction is to allow gas to flow to Pulverized Coal Bin 1 is interior.
Described second pipe 4 is connected with the first pipeline 2, by the gas of the first pipeline 2 with by shared the first nozzle 3 of the gas of second pipe 4 and second nozzle 5.
The end that described pipeline 11 connects winding-up tank 15 is provided with special purpose interface, and perhaps the diffuse channel 12 with winding-up tank 15 shares an interface.
In embodiment, injection system 14 is 2.
Pulverized Coal Bin 1 is used for storing the coal suitable for blowing powder, and the first pipeline 2 is used for new nitrogen is introduced the bottom that the first nozzle 3, the first nozzles 3 are arranged on Pulverized Coal Bin 1, plays rheomorphism.The diffusion valve 16 of injection system 14 is put into Pulverized Coal Bin 1 for the gases in the tank 15 of jetting by diffuse channel 12.Hydathode 8 is installed, in order to the moisture in the diffused gas of draining on second pipe 4.Well heater 7 is installed on second pipe 4, enters the nitrogen of Pulverized Coal Bin 1 in order to heating.Reverse checkvalve 6 is installed on second pipe 4, enters in order to prevent the new source of the gas that passes into the first pipeline 2 pipeline 11 that leads to the tank 15 of jetting.Control the pressure of pipeline 11 or the function of flow and realized by variable valve 10, variable valve 10 has top hole pressure to be regulated and cutting function; Also can realize by flow control element 9 is installed on second pipe 4, this flow control element 9 can be one section internal diameter less than the pipeline of the first pipeline 2 or second pipe 4 internal diameters, can be also choker-line, can be also orifice plate.Hydathode 8, well heater 7, reverse checkvalve 6, flow control element 9 can be arranged on pipeline 11, also can be arranged on second pipe 4, and its built-up sequence, quantity are not done restriction.Can some parts be installed according to circumstances on pipeline 11 or second pipe 4, other valve can be installed yet.
Can be communicated with the second pipe 4 that reclaims nitrogen by the winding-up tank by the first pipeline 2 of new nitrogen, such two kinds of nitrogen just can share the first nozzle 3 and second nozzle 5 by the first pipeline 2 and second pipe 4.
In the winding-up operation of an injection system 14, in the winding-up tank 15 of the injection system 14 of at first coal dust in Pulverized Coal Bin 1 being packed into; Then use the high pressure gas that obtain from new source of the gas pressurize and coal dust is sprayed into blast furnace through valve 16 tank 15 of jet; Then the first nozzle 3 or second nozzle 5 that the gas in tank 15 of jetting is directed at Pulverized Coal Bin 1 bottom spray into Pulverized Coal Bin 1, reduce or cut off new source of the gas to the supply of the gas of Pulverized Coal Bin 1 bottom the first nozzle 3 or second nozzle 5 by reverse checkvalve 6, well heater 7, hydathode 8, flow control element 9 and variable valve 10 simultaneously; The operation of jetting at last finishes to change over to when diffusing operation, open variable valve 10, the interior gas of winding-up tank 15 enters the second nozzle 5 of 1 bottom, powder storehouse through pipeline 11 and second pipe 4, at this moment the new nitrogen of the first pipeline 2 can be closed, or the gas flow of the first pipeline 2 is reduced.In fact the function of this device is exactly that the nitrogen that will jet in tank 15 is introduced the first nozzle 3 of Pulverized Coal Bin 1 by pipeline 11, second pipe 4 and the first pipeline 2, replaces the new nitrogen of a part, thereby reduces nitrogen consumption.
The new source of the gas of choosing in embodiment is nitrogen, can certainly select other suitable gas.
Above-described is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalence of therefore doing according to the utility model claim changes, and still belongs to protection domain of the present utility model.
Claims (8)
1. fine coal blowing unit of blast, it is characterized in that: comprise Pulverized Coal Bin (1), the first pipeline (2), the first nozzle (3), second pipe (4), second nozzle (5), some injection systems that are arranged in juxtaposition (14), winding-up tank (15), diffusion valve (13), diffuse channel (12), pipeline (11); Each injection system (14) correspondence is provided with a winding-up tank (15), diffusion valve (13), diffuse channel (12) and pipeline (11); The first pipeline (2) one ends connect new source of the gas, and the other end connects the first nozzle (3), and the first nozzle (3) is installed on the bottom bulkhead of Pulverized Coal Bin (1), and the outlet of the first nozzle (3) is in Pulverized Coal Bin; Second pipe (4) one ends are connected with second nozzle (5) on the bottom bulkhead that is installed on Pulverized Coal Bin (1), and the other end is connected with pipeline (11), and pipeline (11) the other end is connected with winding-up tank (15), and variable valve (10) is installed on pipeline (11).
2. fine coal blowing unit of blast as claimed in claim 1, it is characterized in that: flow control element (9) is installed on described second pipe (4), this flow control element (9) is that one section internal diameter is less than the pipeline of the first pipeline (2) or second pipe (4) internal diameter, or choker-line, or orifice plate.
3. fine coal blowing unit of blast as claimed in claim 1, is characterized in that: hydathode (8) is installed on described second pipe (4).
4. fine coal blowing unit of blast as claimed in claim 1, is characterized in that: well heater (7) is installed on described second pipe (4).
5. fine coal blowing unit of blast as claimed in claim 1 is characterized in that: reverse checkvalve (6) is installed on described second pipe (4), and its direction is to allow gas to flow in Pulverized Coal Bin (1).
6. fine coal blowing unit of blast as claimed in claim 1, it is characterized in that: described second pipe (4) is connected with the first pipeline (2).
7. fine coal blowing unit of blast as claimed in claim 1 is characterized in that: the end that described pipeline (11) connects winding-up tank (15) is provided with special purpose interface, and perhaps the diffuse channel (12) with winding-up tank (15) shares an interface.
8. fine coal blowing unit of blast as claimed in claim 1, it is characterized in that: described injection system (14) is more than 1 or 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697021 CN202989183U (en) | 2012-12-17 | 2012-12-17 | Blast furnace pulverized coal injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697021 CN202989183U (en) | 2012-12-17 | 2012-12-17 | Blast furnace pulverized coal injection device |
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| Publication Number | Publication Date |
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| CN202989183U true CN202989183U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697021 Expired - Fee Related CN202989183U (en) | 2012-12-17 | 2012-12-17 | Blast furnace pulverized coal injection device |
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| CN (1) | CN202989183U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593597A (en) * | 2015-02-16 | 2015-05-06 | 江西铜业股份有限公司 | Device for injecting pulverized-coal-based reducer |
| CN107164591A (en) * | 2017-07-10 | 2017-09-15 | 中冶华天工程技术有限公司 | Nitrogen multiplex system and its method that a kind of tank of pulverized coal injection three is blown side by side |
| CN112046949A (en) * | 2020-09-17 | 2020-12-08 | 中天钢铁集团有限公司 | Raw coal bunker coal feeding device and coal breakage preventing method thereof |
-
2012
- 2012-12-17 CN CN 201220697021 patent/CN202989183U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593597A (en) * | 2015-02-16 | 2015-05-06 | 江西铜业股份有限公司 | Device for injecting pulverized-coal-based reducer |
| CN107164591A (en) * | 2017-07-10 | 2017-09-15 | 中冶华天工程技术有限公司 | Nitrogen multiplex system and its method that a kind of tank of pulverized coal injection three is blown side by side |
| CN112046949A (en) * | 2020-09-17 | 2020-12-08 | 中天钢铁集团有限公司 | Raw coal bunker coal feeding device and coal breakage preventing method thereof |
| CN112046949B (en) * | 2020-09-17 | 2022-04-26 | 中天钢铁集团有限公司 | Raw coal bunker coal feeding device and coal breakage preventing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170720 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20191217 |