CN202359143U - Nitrogen ejector of diffusion chimney for converter gas dry dedusting - Google Patents
Nitrogen ejector of diffusion chimney for converter gas dry dedusting Download PDFInfo
- Publication number
- CN202359143U CN202359143U CN2011204449628U CN201120444962U CN202359143U CN 202359143 U CN202359143 U CN 202359143U CN 2011204449628 U CN2011204449628 U CN 2011204449628U CN 201120444962 U CN201120444962 U CN 201120444962U CN 202359143 U CN202359143 U CN 202359143U
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- China
- Prior art keywords
- nitrogen
- converter gas
- ejector
- gas dry
- section
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Abstract
The utility model relates to a nitrogen ejector of a converter gas dry deduster. The nitrogen ejector consists of a nitrogen inlet pipe, a pneumatic shut-off valve, a nitrogen pipe, an elbow and a nitrogen ejecting nozzle. The nitrogen ejector is characterized in that the nitrogen ejecting nozzle consists of a contraction section, a throat section and an expansion section. The nitrogen ejector is capable of discharging residual gas out of a dry dedusting system to the largest extent when the dry dedusting system has a fault, thereby ensuring the safe operation of the dedusting system and improving the safety degree of field operation.
Description
Technical field
The utility model relates to fly-ash separator, specifically belongs to a kind of nitrogen induction apparatus of converter gas dry method fly-ash separator.
Background technology
Converter gas dry-dedusting system in service when system breaks down, is to guarantee security of system, therefore needs coal gas remaining in the equipment in the system is discharged system.In the production, require this device operation to want reliable, this device still can start separately when other device fails.In the prior art, be used for the nitrogen induction apparatus of converter gas dry method fly-ash separator, because the unreasonable structure of its nitrogen driving nozzle; Be that it is shaped as taper shape; Make at the intravital nitrogen kinetic energy of tube relatively poorly,, cause when system breaks down even its flow velocity is lower than supersonic speed; For all discharge systems of coal gas remaining in the equipment need be consumed a large amount of high pressure nitrogen media, waste energy and the technology of other required nitrogen is impacted.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency; Provide a kind of through texture improvement to the nitrogen driving nozzle; Making the outlet nitrogen flow rate is supersonic speed; Can realize and can coal gas remaining in the equipment all be discharged system with a small amount of low-pressure nitrogen injection, thereby the nitrogen induction apparatus that diffuses chimney is used in the converter gas dry method dedusting that can reduce potential safety hazard greatly.
Realize the technical measures of above-mentioned purpose:
The converter gas dry method dedusting is made up of nitrogen inlet tube, pneumatic cut-off valve, nitrogen tube, elbow, nitrogen driving nozzle with the nitrogen induction apparatus that diffuses chimney, and it is characterized in that: the nitrogen driving nozzle is by contraction section, aditus laryngis section and expansion segment constitute successively.
It is characterized in that: the contraction angle of contraction section is 25～30 °; The expansion angle of expansion segment is 10～13 °.
The utlity model has and when dry-dedusting system breaks down, coal gas remaining in the system to be discharged system by maximum amplitude, thereby guarantee the safe operation of dust-removal system and improve the execute-in-place degree of safety.
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the structural representation of nitrogen driving nozzle among Fig. 1
Among the figure: the 1-nitrogen inlet tube, the 2-pneumatic cut-off valve, the 3-nitrogen tube, the 4-elbow, 5-nitrogen driving nozzle, the 6-contraction section, 7-aditus laryngis section, the 8-expansion segment, the contraction angle of α-contraction section, B-representes the expansion angle of expansion segment.
Embodiment
Do below in conjunction with accompanying drawing and to further describe:
The converter gas dry method dedusting is made up of nitrogen inlet tube 1, pneumatic cut-off valve 2, nitrogen tube 3, elbow 4, nitrogen driving nozzle 5 with the nitrogen induction apparatus that diffuses chimney.The nitrogen driving nozzle 5 that processing is made up of contraction section 6, aditus laryngis section 7 and expansion segment 8.Contraction section 6, aditus laryngis section 7 and the expansion segment 8 of forming nitrogen driving nozzle 5 can adopt global formation or segmentation to adopt welding or thread connecting mode moulding; The angle of throat α of contraction section 6 is 25 °/28 °/30 °; The flare angle β of expansion segment 8 is 10 °/12 °/13 °.
Through the flow velocity of prepared nitrogen driving nozzle 5 is measured, its flow velocity is greater than supersonic speed, and the remaining coal gas in the dedusting bucket more significantly reduced, thereby has guaranteed the safe operation of dust-removal system.
Need to prove that present embodiment is merely gives an example.
Claims (2)
1. the converter gas dry method dedusting is made up of nitrogen inlet tube, pneumatic cut-off valve, nitrogen tube, elbow, nitrogen driving nozzle with the nitrogen induction apparatus that diffuses chimney, and it is characterized in that: the nitrogen driving nozzle is made up of contraction section, aditus laryngis section and expansion segment successively.
2. converter gas dry method dedusting as claimed in claim 1 is with the nitrogen induction apparatus that diffuses chimney, and it is characterized in that: the contraction angle of contraction section is 25～30 °; The expansion angle of expansion segment is 10～13 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204449628U CN202359143U (en) | 2011-11-11 | 2011-11-11 | Nitrogen ejector of diffusion chimney for converter gas dry dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204449628U CN202359143U (en) | 2011-11-11 | 2011-11-11 | Nitrogen ejector of diffusion chimney for converter gas dry dedusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202359143U true CN202359143U (en) | 2012-08-01 |
Family
ID=46570346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204449628U Expired - Lifetime CN202359143U (en) | 2011-11-11 | 2011-11-11 | Nitrogen ejector of diffusion chimney for converter gas dry dedusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202359143U (en) |
-
2011
- 2011-11-11 CN CN2011204449628U patent/CN202359143U/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |