CN201825967U - Cyclone injection lance for blast furnace injection - Google Patents
Cyclone injection lance for blast furnace injection Download PDFInfo
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- CN201825967U CN201825967U CN2010205422098U CN201020542209U CN201825967U CN 201825967 U CN201825967 U CN 201825967U CN 2010205422098 U CN2010205422098 U CN 2010205422098U CN 201020542209 U CN201020542209 U CN 201020542209U CN 201825967 U CN201825967 U CN 201825967U
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- injection
- blast furnace
- spray gun
- cyclone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model relates to the field of blast furnace equipment, in particular to a cyclone injection lance for blast furnace injection, which comprises an inner injection tube (2), an outer cooling tube (1), an internal cyclone (3) and a diffusion outlet sprayer (4). The diffusion outlet sprayer (4) is mounted on the outer cooling tube (1), the diameter of an inlet end of the diffusion outlet sprayer (4) is smaller than that of an outlet end, the inner injection tube (2) is coaxially disposed inside the outer cooling tube (1), a cooling blast passage is reserved between the inner injection tube (2) and the outer cooling tube (1), the internal cyclone (3) is disposed at an inlet end of the inner injection tube (2), and the internal cyclone (3) faces the diffusion outlet sprayer (4). Pneumatic conveying solid-gas ratio of the cyclone injection lance is increased, wearing of an air tube is lower, the cyclone injection lance is applicable to blast furnace injection for particular materials such as waste plastic, waste tires, waste rubber, refuse derived fuels, larger-fineness pulverized coal and the like, the injection volume is increased by above 20% as compared with a traditional injection lance, and higher combustion vaporization efficiency can be achieved.
Description
Technical field
The utility model relates to the blast-furnace equipment field, relates in particular to a kind of blast furnace blowing spray gun.
Background technology
The dissolve expanding function of social large wastes such as steel scrap, plastic waste, damaged tire, domestic refuse and high concentrated organic wastewater of iron and steel enterprise has caused the extensive concern of industry.Successfully develop in the prior art plastic waste sprayed in the blast furnace and electric arc furnace in spray into the technology of damaged tire; Practice shows: refuses such as plastic waste, damaged tire, garbage derivatived fuel are rich in carbon, hydrogen, ash content is low, the calorific value height, with coal dust mixed firing the time, can obviously improve the burning of coal characteristic, combustionvelocity is fast, with it after technology pre-treatment such as sorting, cleaning, drying, fragmentation, granulation, spray into metallurgical furnace, both saved the waste treatment expense, opened up a new way for the smelter save energy again.
Handle early than the mass-producing of social refuse winding-up, pulverized coal injection in blast furnace is through constantly research and perfect, now quite universal, and this technology is reducing coke ratio, reducing pig iron cost and enrich aspect such as bottom house adjustment means and brought into play vital role; And spray gun is as the worst parts of bf coal injection system working conditions, and the quality of its working condition directly influences coal powder injection effect and blast furnace production.Problems such as coal dust wearing and tearing air port, the gun slot that some blast furnaces of China exist stops up, scaling loss is serious, mostly unreasonable with spray gun structure, mis-arrange, that selection is not good enough is relevant.
The spray gun that pulverized coal injection in blast furnace is used is straight tubular, is divided into single hose and telescoping.The coal dust longitudinal center stream of single hose spray gun ejection is strand big, can not fully contact with hot blast, is laminar flow or weak turbulent state mostly, causes that the coal dust firing condition is poor, coal combustion rate is low, substitution rate is low, and coal powder blowing amount generally can not surpass 100kg/t; The telescoping spray gun is made up of interior pipe, outer tube, nozzle three parts, and two-layer ligament blowing compressed air cooling is to prevent spray gun high temperature oxidation, corrosion and distortion; For reducing the wearing and tearing of coal powder injection to airduct, telescoping spray gun front end often is cold-pressed into the curved arc about 10 ~ 12 degree, make spray gun front end axis and air port central lines behind the oblique cutting air intake vent, the problem of bringing thus is that the abrasion and the scaling loss at the anterior curved arc of gun barrel place are comparatively serious.
Patent ZL 94201862.1 discloses a kind of pulverized coal injection in blast furnace spray gun, and as shown in Figure 1, it is made up of lance tube 41, rifle head overcoat 42, porous applicator head 43, rifle skull 44, coal dust spray orifice 45 etc.The principal feature of this device is the porous applicator head that even perforate is housed at the pulverized coal gun tube head, so that coal dust by the time because of being divided into the multiply thread, increase flow velocity, but because coal dust is obstructed suddenly when spray gun end flow at high speed, the situation of be easy to that at high temperature the coal dust sintering takes place, stopping up spray orifice needs often to change the porous applicator head in actual the use.In addition, the winding-up object of this patent is the coal dust of 200 order fineness, and the big or injecting coal quantity increase of pulverized coal particle can make coal dust firing incomplete, has both influenced blast-furnace smelting, has reduced the coal dust utilization ratio again.
For noncrystal macromolecule materials such as plastic waste, damaged tire, waste rubber, RDF, when adopting conventional spray gun, because of wide between wide, the no definite melting point of its distribution, softened zone, the easy rifle wall that bonds, when reality is jetted, the spray gun blockage often takes place.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of whirlwind-type blast furnace blowing spray gun, and this spray gun disperses the material eddy flow by built-in swirler, makes jetting pressure and injecting velocity increase, pipe plug material in can effectively preventing to jet; The outlet sudden enlargement of the outlet of external diffusion simultaneously shower nozzle helps the bigger material of particle and obtains higher fired vapour efficient.
The utility model is achieved in that a kind of whirlwind-type blast furnace blowing spray gun, constitute by pipe, cooling outer tube, built-in swirler and outlet diffusor shower nozzle in the winding-up, described outlet diffusor shower nozzle is installed on the cooling outer tube, and the entrance end diameter of outlet diffusor shower nozzle is less than the exit end diameter; Pipe is coaxial in the described winding-up is arranged in the cooling outer tube, is cooling air flow passage between pipe and the cooling outer tube in the winding-up, and described built-in swirler is arranged on pipe outlet end in the winding-up, and described built-in swirler is over against the outlet diffusor shower nozzle.
Described built-in swirler comprises outer rim barrel, screw-blade and spiral awl, and described outer rim barrel is fixedly mounted on pipe outlet end in the winding-up, the coaxial center that is arranged on the outer rim barrel of described spiral awl, and described screw-blade annular array is on the spiral awl.
Described screw-blade and level cross-sectionn angle are 45 ° ~ 120 °.
Described screw-blade has 3 ~ 10, and annular array is on the spiral awl.
The angle of the hypotenuse of described outlet diffusor shower nozzle and spray gun axis is 15 ° ~ 75 °.
The utility model whirlwind-type blast furnace blowing disperses the material eddy flow by built-in swirler with spray gun, makes jetting pressure and injecting velocity increase, pipe plug material in can effectively preventing to jet; In winding-up, be connected with cold gas outside the pipe simultaneously, prevented that winding-up material sintering from stopping up pipe in the winding-up; The outlet sudden enlargement of outlet diffusor shower nozzle in addition, material flow moment after eddy flow quickens slows down, and with hot blast hybrid perturbation better effects if, material can be heated rapidly, district's residence time of circling round in the air port is longer, helps the bigger material of particle and obtains higher fired vapour efficient.
The utility model is when improving air conveying solid-gas ratio, wearing and tearing to airduct are littler, be applicable to the granular materials such as coal dust that Injecting Plastic Scrap into BF, tire, waste rubber, garbage derivatived fuel and fineness are bigger, the winding-up amount has improved more than 20% than conventional lance, and can obtain higher fired vapour efficient.
Description of drawings
Fig. 1 is an existing pulverized coal injection in blast furnace spray gun structure synoptic diagram;
Fig. 2 is the utility model whirlwind-type blast furnace blowing spray gun structure synoptic diagram;
Fig. 3 is the built-in hydrocyclone structure synoptic diagram in the utility model.
Among the figure: pipe, 3 built-in swirlers, 31 outer rim barrels, 32 screw-blades, 33 spirals awl, 4 outlet diffusor shower nozzles, 41 lance tubes, 42 rifle head overcoats, 43 porous applicator heads, 44 rifle skulls, 45 coal dust spray orifices in 1 cooling outer tube, 2 winding-ups.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Present embodiment whirlwind-type blast furnace blowing is one of particulate state such as plastic waste, damaged tire, waste rubber, garbage derivatived fuel (RDF), coal dust or the flammable material of powdery and combination thereof with the material of spray gun winding-up, and granularity is 0 ~ 10mm.
As shown in Figure 2, a kind of whirlwind-type blast furnace blowing spray gun, be made of pipe 2, cooling outer tube 1, built-in swirler 3 and outlet diffusor shower nozzle 4 in the winding-up, described outlet diffusor shower nozzle 4 is installed on the cooling outer tube 1, and the entrance end diameter of outlet diffusor shower nozzle 4 is less than the exit end diameter; Pipe 2 coaxial being arranged in the cooling outer tube 1 are cooling air flow passage between pipe 2 and the cooling outer tube 1 in the winding-up in the described winding-up, and the material sintering that prevents to jet stops up pipe 2 in the winding-up; Described built-in swirler 3 is arranged on pipe 2 outlet ends in the winding-up, described built-in swirler 3 is over against outlet diffusor shower nozzle 4, the angle of the hypotenuse of described outlet diffusor shower nozzle 4 and spray gun axis is 15 ° ~ 75 °, the angle of the hypotenuse of described in the present embodiment described outlet diffusor shower nozzle 4 and spray gun axis is 45 °, material behind eddy flow is in the unexpected disperse in outlet diffusor shower nozzle 4 exits, the particle flow velocity slows down to some extent, residence time prolongs, help jetting material and the interior hot blast of airduct mix intensification and fired vapour.
As shown in Figure 3, the utility model can further describe into, described built-in swirler 3 comprises outer rim barrel 31, screw-blade 32 and spiral awl 33, described outer rim barrel 31 is fixedly mounted on pipe 2 outlet ends in the winding-up, described spiral is bored the 33 coaxial centers that are arranged on outer rim barrel 31, described screw-blade 32 annular arrays are on spiral awl 33, screw-blade 32 is 45 ° ~ 120 ° with the level cross-sectionn angle, described screw-blade 32 has 3 ~ 10, annular array is on spiral awl 33, described in the present embodiment screw-blade 32 is 45 ° with the level cross-sectionn angle, and described screw-blade 32 has 8.
Claims (5)
1. whirlwind-type blast furnace blowing spray gun, it is characterized in that: constitute by pipe (2), cooling outer tube (1), built-in swirler (3) and outlet diffusor shower nozzle (4) in the winding-up, described outlet diffusor shower nozzle (4) is installed on the cooling outer tube (1), and the entrance end diameter of outlet diffusor shower nozzle (4) is less than the exit end diameter; Pipe (2) is coaxial in the described winding-up is arranged in the cooling outer tube (1), be cooling air flow passage between pipe (2) and the cooling outer tube (1) in the winding-up, described built-in swirler (3) is arranged on pipe (2) outlet end in the winding-up, and described built-in swirler (3) is over against outlet diffusor shower nozzle (4).
2. whirlwind-type blast furnace blowing spray gun as claimed in claim 1, it is characterized in that: described built-in swirler (3) comprises outer rim barrel (31), screw-blade (32) and spiral awl (33), described outer rim barrel (31) is fixedly mounted on pipe (2) outlet end in the winding-up, described spiral awl (33) coaxial center that is arranged on outer rim barrel (31), described screw-blade (32) annular array is on spiral awl (33).
3. whirlwind-type blast furnace blowing spray gun as claimed in claim 2 is characterized in that: described screw-blade (32) is 45 ° ~ 120 ° with the level cross-sectionn angle.
4. whirlwind-type blast furnace blowing spray gun as claimed in claim 2 is characterized in that: described screw-blade (32) has 3 ~ 10, and annular array is on spiral awl (33).
5. whirlwind-type blast furnace blowing spray gun as claimed in claim 1 is characterized in that: the hypotenuse of described outlet diffusor shower nozzle (4) and the angle of spray gun axis are 15 ° ~ 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205422098U CN201825967U (en) | 2010-09-26 | 2010-09-26 | Cyclone injection lance for blast furnace injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205422098U CN201825967U (en) | 2010-09-26 | 2010-09-26 | Cyclone injection lance for blast furnace injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201825967U true CN201825967U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205422098U Expired - Lifetime CN201825967U (en) | 2010-09-26 | 2010-09-26 | Cyclone injection lance for blast furnace injection |
Country Status (1)
| Country | Link |
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| CN (1) | CN201825967U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105557473A (en) * | 2015-12-15 | 2016-05-11 | 重庆亘宇园林景观工程有限公司 | Pressure-regulating type greening conservation sprinkling device |
| CN106381356A (en) * | 2016-11-09 | 2017-02-08 | 山东钢铁股份有限公司 | Coal injection gun of blast furnace |
| CN107130071A (en) * | 2017-05-12 | 2017-09-05 | 江苏金基特钢有限公司 | A kind of coal rifle |
| CN109055635A (en) * | 2018-10-10 | 2018-12-21 | 鞍钢股份有限公司 | Injection method for improving pulverized coal combustion efficiency |
| CN113574184A (en) * | 2019-03-27 | 2021-10-29 | 杰富意钢铁株式会社 | Method for raising temperature of furnace bottom and burner lance used in the method |
| CN115011745A (en) * | 2022-01-31 | 2022-09-06 | 昆明理工大学 | Method for preparing blast furnace blowing waste tire and pulverized coal mixed fuel and blowing method thereof |
-
2010
- 2010-09-26 CN CN2010205422098U patent/CN201825967U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105557473A (en) * | 2015-12-15 | 2016-05-11 | 重庆亘宇园林景观工程有限公司 | Pressure-regulating type greening conservation sprinkling device |
| CN106381356A (en) * | 2016-11-09 | 2017-02-08 | 山东钢铁股份有限公司 | Coal injection gun of blast furnace |
| CN107130071A (en) * | 2017-05-12 | 2017-09-05 | 江苏金基特钢有限公司 | A kind of coal rifle |
| CN107130071B (en) * | 2017-05-12 | 2019-05-28 | 江苏金基特钢有限公司 | A kind of coal rifle |
| CN109055635A (en) * | 2018-10-10 | 2018-12-21 | 鞍钢股份有限公司 | Injection method for improving pulverized coal combustion efficiency |
| CN113574184A (en) * | 2019-03-27 | 2021-10-29 | 杰富意钢铁株式会社 | Method for raising temperature of furnace bottom and burner lance used in the method |
| CN115011745A (en) * | 2022-01-31 | 2022-09-06 | 昆明理工大学 | Method for preparing blast furnace blowing waste tire and pulverized coal mixed fuel and blowing method thereof |
| CN115011745B (en) * | 2022-01-31 | 2024-03-01 | 昆明理工大学 | Method for preparing blast furnace injection waste tire and pulverized coal mixed fuel and injection method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |