CN203768385U - Nitrogen gas purging device for blast furnace coal gas pipeline - Google Patents
Nitrogen gas purging device for blast furnace coal gas pipeline Download PDFInfo
- Publication number
- CN203768385U CN203768385U CN201420179629.2U CN201420179629U CN203768385U CN 203768385 U CN203768385 U CN 203768385U CN 201420179629 U CN201420179629 U CN 201420179629U CN 203768385 U CN203768385 U CN 203768385U
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- blast furnace
- pipeline
- gas pipeline
- nitrogen gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 230
- 238000010926 purge Methods 0.000 title claims abstract description 24
- 239000003034 coal gas Substances 0.000 title abstract description 7
- 229910001873 dinitrogen Inorganic materials 0.000 title abstract 20
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 105
- 239000007789 gas Substances 0.000 claims description 47
- 230000001154 acute effect Effects 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 abstract 3
- 239000012535 impurity Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model provides a nitrogen gas purging device for a blast furnace coal gas pipeline. The nitrogen gas purging device comprises a nitrogen gas pipeline, a nitrogen gas injection hole, a gradual-reducing gradual-expanding spray nozzle and a blast furnace coal gas pipeline, wherein the nitrogen gas injection hole is formed on the blast furnace coal gas pipeline; a blast furnace coal gas pipeline valve is arranged on a joint of the blast furnace coal gas pipeline and the nitrogen gas injection hole; a nitrogen gas injection hole valve is arranged on the nitrogen gas injection hole; the nitrogen gas injection hole valve is further connected with a nitrogen gas pipeline for injecting a nitrogen gas; and a nitrogen gas pipeline gate valve is arranged on the nitrogen gas pipeline; the nitrogen gas purging device is characterized in that the gradual-reducing gradual-expanding spray nozzle is connected between the nitrogen gas injection hole and the nitrogen gas pipeline, wherein movable connecting parts at the two ends of the gradual-reducing gradual-expanding spray nozzle are a nitrogen gas pipeline dismounting part and a nitrogen gas injection hole dismounting part. The nitrogen gas purging device disclosed by the utility model is short in purging time, convenient to change, and simplifies purging pipeline arrangement at the same time.
Description
Technical field
The utility model belongs to Power Generation by BF Gas field, especially a kind of blast furnace gas pipeline nitrogen purging device.
Background technology
Because blast furnace gas contains hydrogen, carbon monoxide is more, if contain air in supply line, when lighting a fire, internal combustion turbine easily there is deflagration phenomenon, cause serious accident.In furnace shutting down process maintenance process, usually can enter air and coke oven impurity etc., the easy plug nozzle of coke oven impurity; In prior art between each partition door, pipeline low spot is all provided with nitrogen injection tube, piping arrangement is complicated, needs nitrogen compressor power large, has increased pipeline network construction expense.
Utility model content
The purpose of this utility model be to provide a kind of purge time short, change blast furnace gas pipeline nitrogen purging device easily, simplified the piping layout of nitrogen purging.
For this reason, the technical solution that the utility model is taked is:
A kind of blast furnace gas pipeline nitrogen purging device, comprise nitrogen pipeline, nitrogen inlet, convergent is wealthy jet pipe gradually, blast furnace gas pipeline, on described blast furnace coal pipeline, have nitrogen inlet, there is blast furnace gas pipeline valve described blast furnace gas pipeline and described nitrogen inlet junction, described nitrogen inlet is provided with nitrogen inlet valve, also be connected with the nitrogen pipeline of nitrogen injection, described nitrogen pipeline is provided with nitrogen pipeline gate valve, between described nitrogen inlet and nitrogen pipeline, be connected with gradually wealthy jet pipe of convergent, described convergent gradually wealthy jet pipe two ends flexible connection parts is nitrogen pipeline dismounting parts and nitrogen inlet dismounting parts.
Being connected to of described nitrogen inlet and described blast furnace gas pipeline cut sth. askew into, the angle forming between described nitrogen inlet and described blast furnace gas pipeline is acute angle, angle is 30 ° to 45 °.
Described blast furnace gas pipeline valve is arranged at the place, acute angle summit forming between described nitrogen inlet and described blast furnace gas pipeline.
The beneficial effect of technique scheme is:
The utility model is set up gradually wealthy jet pipe of convergent in nitrogen filling line, accelerated the speed of nitrogen in blast furnace gas pipeline, can under minimizing nitrogen compressor power, also can meet same demand, do not need at pipeline low level place, nitrogen flow in pipes to be set again, the complexity that has reduced piping arrangement, has reduced workload; Nitrogen enter blast furnace gas pipeline for cut sth. askew into, in pipeline, form tangential swirling eddy, can wash away the impurity being deposited on tube wall, after purging, reduced the residual of impurity, the phenomenon that has reduced plug nozzle occurs, has shortened the driving time of blowing out; Blast furnace gas pipeline valve is arranged at the place, acute angle summit forming between nitrogen inlet and blast furnace gas pipeline, can reduce purging nitrogen use level.
Accompanying drawing explanation
Fig. 1 is the structural representation of blast furnace gas pipeline nitrogen purging device of the present utility model.
In figure: 1, nitrogen pipeline; 2, nitrogen inlet; 3, convergent wealthy jet pipe gradually; 4, blast furnace gas pipeline; 201, nitrogen pipeline gate valve; 202, nitrogen inlet valve; 203, blast furnace gas pipeline valve; 301, nitrogen pipeline dismounting parts; 302, nitrogen inlet dismounting parts.
Embodiment
As shown in Figure 1, a kind of blast furnace gas pipeline nitrogen purging device, comprise nitrogen pipeline 1, nitrogen inlet 2, convergent is wealthy jet pipe 3 gradually, blast furnace gas pipeline 4, on described blast furnace coal pipeline 4, have nitrogen inlet 2, described blast furnace gas pipeline 4 has blast furnace gas pipeline valve 203 with described nitrogen inlet 2 junctions, described nitrogen inlet 2 is provided with nitrogen inlet valve 202, also be connected with the nitrogen pipeline 1 of nitrogen injection, on described nitrogen pipeline 1, be also provided with nitrogen pipeline gate valve 201, between described nitrogen inlet 2 and nitrogen pipeline 1, be connected with gradually wealthy jet pipe 3 of convergent, described convergent gradually wealthy jet pipe 3 two ends flexible connection parts is nitrogen pipeline dismounting parts 301 and nitrogen inlet dismounting parts 302.
Described nitrogen inlet 2 and being connected to of described blast furnace gas pipeline 4 cut sth. askew into, between described nitrogen inlet 2 and described blast furnace gas pipeline 4, the angle of formation is 30 ° to 45 °.
Described blast furnace gas pipeline valve 203 is arranged at the place, acute angle summit forming between described nitrogen inlet 2 and described blast furnace gas pipeline 4.
For making feature of the present utility model and advantage clearer, below in conjunction with specific embodiment, be described.
Nitrogen from nitrogen compressor, there is certain flow rate, open nitrogen pipeline gate valve 201 and nitrogen inlet valve 202, close blast furnace gas pipeline valve 203, form nitrogen purging passage, when valve is used for preventing from moving, coal gas is scurried into nitrogen pipeline 1, nitrogen inlet 2 is located on blast furnace coal pipeline 4, nitrogen pipeline gate 201 is arranged on nitrogen pipeline 1, be positioned at the outer end of nitrogen pipeline dismounting parts 301, nitrogen inlet valve 202 is located between nitrogen inlet dismounting parts 302 and nitrogen inlet 2, when blast furnace gas is normally used, all in closing condition, between nitrogen pipeline 1 and nitrogen inlet 2, be connected with gradually wealthy jet pipe 3 of convergent, convergent gradually wealthy jet pipe 3 two ends flexible connection parts is nitrogen pipeline dismounting parts 301 and nitrogen inlet dismounting parts 302, the convergent that can connect different model according to different purposes is wealthy jet pipe 3 gradually, the while convergent nitrogen flow rate that gradually wealthy jet pipe 3 can accelerate to be filled with by nitrogen compressor, reduce nitrogen compressor power and also can meet same demand, need to nitrogen flow in pipes be set at pipeline low level place, the complexity that has reduced piping arrangement, has reduced workload, nitrogen inlet 2 and being connected to of blast furnace gas pipeline 4 cut sth. askew into, the angle forming between nitrogen inlet 2 and blast furnace gas pipeline 4 is 30 ° to 45 °, nitrogen can be at the tangential swirling eddy of the interior formation of blast furnace gas pipeline 4, swirling eddy can wash away the impurity being deposited on tube wall, after purging, reduced the residual of impurity, the phenomenon that has reduced plug nozzle occurs, has shortened the driving time of blowing out, blast furnace gas pipeline 4 is provided with blast furnace gas pipeline valve 203 with nitrogen inlet 2 junctions, for blocking the gas of front process section, guarantee that nitrogen is in the trouble-free operation of nitrogen purging section, blast furnace gas pipeline valve 203 is arranged at the place, acute angle summit forming between nitrogen inlet 2 and blast furnace gas pipeline 4, reduces and purges nitrogen use level.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in protection domain of the present utility model.
Claims (3)
1. a blast furnace gas pipeline nitrogen purging device, comprise nitrogen pipeline, nitrogen inlet, convergent is wealthy jet pipe gradually, blast furnace gas pipeline, on described blast furnace coal pipeline, have nitrogen inlet, there is blast furnace gas pipeline valve described blast furnace gas pipeline and described nitrogen inlet junction, described nitrogen inlet is provided with nitrogen inlet valve, also be connected with the nitrogen pipeline of nitrogen injection, described nitrogen pipeline is provided with nitrogen pipeline gate valve, it is characterized in that: between described nitrogen inlet and nitrogen pipeline, be connected with gradually wealthy jet pipe of convergent, described convergent gradually wealthy jet pipe two ends flexible connection parts is nitrogen pipeline dismounting parts and nitrogen inlet dismounting parts.
2. blast furnace gas pipeline nitrogen purging device according to claim 1, it is characterized in that: being connected to of described nitrogen inlet and described blast furnace gas pipeline cut sth. askew into, the angle forming between described nitrogen inlet and described blast furnace gas pipeline is acute angle, and angle is 30 ° ~ 45 °.
3. blast furnace gas pipeline nitrogen purging device according to claim 1, is characterized in that: described blast furnace gas pipeline valve is arranged at the place, acute angle summit forming between described nitrogen inlet and described blast furnace gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179629.2U CN203768385U (en) | 2014-04-15 | 2014-04-15 | Nitrogen gas purging device for blast furnace coal gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179629.2U CN203768385U (en) | 2014-04-15 | 2014-04-15 | Nitrogen gas purging device for blast furnace coal gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203768385U true CN203768385U (en) | 2014-08-13 |
Family
ID=51285596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179629.2U Expired - Lifetime CN203768385U (en) | 2014-04-15 | 2014-04-15 | Nitrogen gas purging device for blast furnace coal gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203768385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620489A (en) * | 2022-04-11 | 2022-06-14 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for conveying pulverized coal by using nitrogen |
-
2014
- 2014-04-15 CN CN201420179629.2U patent/CN203768385U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620489A (en) * | 2022-04-11 | 2022-06-14 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for conveying pulverized coal by using nitrogen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |