CN101948940A - Efficient, safe and environment-friendly blasting device - Google Patents
Efficient, safe and environment-friendly blasting device Download PDFInfo
- Publication number
- CN101948940A CN101948940A CN 201010271099 CN201010271099A CN101948940A CN 101948940 A CN101948940 A CN 101948940A CN 201010271099 CN201010271099 CN 201010271099 CN 201010271099 A CN201010271099 A CN 201010271099A CN 101948940 A CN101948940 A CN 101948940A
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- Prior art keywords
- tank body
- metal strip
- blowing device
- environmental protection
- highly effective
- Prior art date
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- 238000005422 blasting Methods 0.000 title abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims description 22
- 230000007613 environmental effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 3
- 210000003027 ear inner Anatomy 0.000 abstract 4
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 17
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 206010020843 Hyperthermia Diseases 0.000 description 6
- 230000036031 hyperthermia Effects 0.000 description 6
- 238000005243 fluidization Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 208000008918 voyeurism Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to an efficient, safe and environment-friendly blasting device, belonging to the technical field of metallurgic combustion auxiliary facilities. The device comprises a tank body with a top provided with a feed opening and a nitrogen charging opening; the lower part of the tank body is in a reduced conical shape, while the bottom is provided with a fluidized bed; the tank body is internally provided with a discharge pipe; and the lower end of the discharge pipe is arranged above the fluidized bed, while the upper end penetrates through the side wall of the tank body. The blasting device is characterized in that homothermal labyrinths are filled in the middle of the tank body; and the homothermal labyrinths consist of metal strips which are intersected lengthways and transversely to form into grilles. As the homothermal labyrinths are made of metals with favorable thermal conductivity and are intersected lengthways and transversely to fill the middle of the tank body, an ideal homothermal effect can be obtained, and a local high temperature possibly existing in the middle of the tank body can be eliminated, thereby effectively avoiding combustion and explosion and ensuring use safety. In addition, the homothermal labyrinths are in favor of the uniform input of coal powder so that the blasting effect is better.
Description
Technical field
The present invention relates to a kind of spray apparatus that blows of coal dust, especially a kind of highly effective and safe environmental protection blowing device belongs to metallurgical burning technical field of auxiliary facilities.
Background technology
Blowing device (being commonly called as the winding-up jar) is the visual plant in the bf coal injection system, and its groundwork engineering is as follows: 1: charging: the opening for feed of coal dust through its top enters the winding-up jar, after the coal dust amount of packing into arrives set(ting)value, closes feed valve.2: pressurising: after charging finishes, use high pressure nitrogen that the winding-up jar is carried out pressurising, after pressure arrives set(ting)value, close high pressure nitrogen, keep winding-up jar internal pressure constant, wait for winding-up.This process winding-up jar from the time that zero pressure rises to operating pressure be 4-6 minute, produce a large amount of heats simultaneously.3: winding-up: the unlatching bleeder valve, the interior coal dust of winding-up jar is under the pressure and fluidisation wind action of winding-up jar, and fluidised coal dust flows out the jar of jetting through the coal dust discharge port, constantly has nitrogen to mend the winding-up jar with the pressure-stabilisation in the assurance winding-up jar simultaneously.4: release: when the coal dust in the winding-up jar is reduced to set(ting)value, close the coal dust bleeder valve, stop winding-up.Open relief valve simultaneously, the high pressure nitrogen in the winding-up jar is discharged, so that carry out next round-robin loading operation.The time that this process injection tank pressure is reduced to zero pressure from operating pressure is 4-6 minute, discharges a large amount of heats simultaneously.
There is unsafe factor in existing blowing device owing to following reason: owing to static, Mars, get angry etc., coal dust may cause and fires; Winding-up jar pressurising, a fluidisation, help the nitrogen that blows to leak, the personnel that may cause suffocate; In pressure leak process, often produce the coal dust airborne dust, health is worked the mischief.
Application number is CN90212210.X, the Chinese patent application that name is called " blast-furnace coal powder injection device " discloses a kind of blast-furnace coal powder injection device, it is by coal feeding pipe, cock, the coal powder injection pipe, hold-down nut, thrust block, insert son, socket, ball valve, outer tube, the peephole pressing plate, peeping hole cover, the peephole pipe, the peephole joint, the peeping hole cover ring flange, little curved, belly pipe, tuyere small sleeve, settling chamber is formed, one end of coal powder injection pipe is located in the belly pipe away from tuyere small sleeve, and its axis is parallel with the axis of belly pipe, be connected with the emptying tubule at its other end, be provided with drain cock between the emptying tubule, an end of peephole pipe is connected with swab handle.In addition, application number is that the Chinese patent application of CN200420029802.7 discloses a kind of fluidisation blowing device, and employing thickness is the 1Cr18Ni9Ti stainless steel plate about 3mm, and the long strip shape slit is arranged on its disc, be a cross layout, the slit is perpendicular to the central cross line.The gap, slit is 0.5mm, and its length is about 20mm, and the slit spacing is 10mm, and the lower edge in slit is carried out 1 * 45 ° chamfering.These improvement are perfect to some extent to blowing device from different perspectives, but potential safety hazard still exists.
Summary of the invention
The objective of the invention is to: propose a kind of high-efficiency environment friendly blowing device with good safety.
As everyone knows, the essential condition of fire is: 1) have combustible medium; 2) in oxygenated environment; 3) the combustible medium temperature arrives burning-point or meets flaming.Blast then is to take place in satisfying the enclosed space of above-mentioned condition.Therefore analyze fire former in from above 3 considerations.
For blowing device, research thirdly is significant.Because blowing device can produce a large amount of heats in the pressurising process, and the mutual fricting movement of coal dust also can produce heat in the pressurising process.But test shows, the medial temperature after the intensification are still far below the coal dust burning-point.The applicant is carrying out necessary detection research back discovery to existing blowing device: for various reasons, the temperature distribution of blowing device is also unbalanced, has localized hyperthermia at its tank body middle part.This just localized hyperthermia is real potential safety hazard place.
On this understanding basis, in order to reach above purpose, high-efficiency environment friendly blowing device of the present invention comprises that the top has opening for feed and the tank body that fills the nitrogen mouth; Described tank body bottom is the taper of reducing, and the bottom has fluidized-bed; In the described tank body discharge nozzle is housed, the lower end of described discharge nozzle is positioned at the fluidized-bed top, and the upper end passes tank wall; Its improvements are: described tank body is filled with even warm labyrinth in the middle part; Described even temperature labyrinth is formed grid-like metal strip and is constituted by crisscross.
Because even warm labyrinth is made by the thermal conductivity good metal, and the crisscross tank body middle part that is full of, therefore can play the even temperature effect of ideal, can eliminate the localized hyperthermia that the tank body middle part may exist, thereby effectively avoid firing, guarantee safe in utilization.In addition, even warm labyrinth also helps the even input of coal dust, makes the winding-up better effects if.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation in even warm labyrinth.
Embodiment
Embodiment one
The high-efficiency environment friendly blowing device of present embodiment comprises that top 17 has opening for feed 22 and the tank body 8 that fills nitrogen mouth 19 as depicted in figs. 1 and 2, and this tank body bottom 6 is the taper of reducing, and the bottom has fluidisation plate 1, constitutes fluidized-bed with external air inlet device.L shaped discharge nozzle 7 is housed down in the tank body 8, and the lower end of this discharge nozzle is the bell mouth shape that enlarges gradually, is positioned at fluidisation plate 1 top of fluidized-bed, and the upper end passes tank body 8 sidewalls, is connected with the coal powder injection external pipeline by discharge port 9.Be filled with even warm labyrinth 27 in tank body 8 middle parts.Even warm labyrinth 27 is formed grid-like metal strip and is constituted by crisscross, concrete structure as shown in Figure 3, transverse set metal strip H and vertical group metal strip V respectively by be parallel to each other, spaced apart, and the vertical metal strip of width (preferably copper bar) constitutes; Transverse set metal strip and vertically organizing between the metal strip is perpendicular to one another, stack successively, and the intersection is shaped on draw-in groove, is fixed mutually.Draw-in groove both can be made in a side of metal strip width, also can make simultaneously in metal strip width both sides, owing to have regularity, so manufacturability is good, can punching press make.In order to have good conduction contact, preferably spot welding connection again after the engaging.
As everyone knows, the essential condition of fire is: one. there is combustible medium.Two. in oxygen-enriched environment.Three. the combustible medium temperature arrives burning-point or meets flaming.Blast then when satisfying above-mentioned condition, betides enclosed space.Therefore, the blowing device of present embodiment with even warm labyrinth 27 started with at above 3 and designed.
Dielectric property is an inherent, can't change, thereby can only rely on the change environment to prevent fire explosion.Can start with from second and third top point thus, promptly allow medium under anaerobic environment, work (replacing air pressurized) or the control agent temperature is lower than its burning-point with nitrogen pressure.
The blowing device of present embodiment is mainly considered thirdly, by controlling the generation that its temperature prevents fire explosion.Test shows, winding-up produce a large amount of heats jar in the pressurising process, and coal dust motion aggravation also can produce heat in the pressurising process, and the temperature that the result causes jetting in the jar raises, usually jar in medial temperature far below the medium burning-point.But in fact jar intravital temperature field is also inhomogeneous, and there is localized hyperthermia in the middle part between top and the bottom.Therefore, the homogeneity of temperature distribution reaches the purpose of avoiding localized hyperthermia to present embodiment in the tank body by improving.
Because the heat conductivility of copper is better than coal dust and nitrogen greatly, it is the heat transfer that copper is better than the rapid ability of diffusion towards periphery of heat of high-temperature area far away coal dust and nitrogen self, therefore adopt the labyrinth device that is arranged in tridimensional network according to certain rules with copper coin can improve the homogeneity of temperature distribution in the tank body greatly, effectively avoid localized hyperthermia.Simultaneously, evidence, even warm labyrinth is also played and is made the more uniform effect of coal dust input, thereby makes its sulfuration close the winding-up better effects if.
In the present embodiment, a side of tank body bottom 6 also is provided with the hand hole 3 that is used to safeguard, is used for the spout 4 of blast cleaning tank body bottom 6, and the sidewall of tank body 8 is provided with the manhole 26 that is used to overhaul, and tank body top 17 also is provided with pressure tap, diffuses the hole, safe valve opening 23 etc.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (7)
1. a highly effective and safe environmental protection blowing device comprises that the top has opening for feed and the tank body that fills the nitrogen mouth; Described tank body bottom is the taper of reducing, and the bottom has fluidized-bed; In the described tank body discharge nozzle is housed, the lower end of described discharge nozzle is positioned at the fluidized-bed top, and the upper end passes tank wall; It is characterized in that: described tank body is filled with even warm labyrinth in the middle part; Described even temperature labyrinth is formed grid-like metal strip and is constituted by crisscross.
2. highly effective and safe environmental protection blowing device according to claim 1, it is characterized in that: described even temperature labyrinth is contained the transverse set metal strip and is vertically organized metal strip, described transverse set metal strip and vertically the group metal strip respectively by be parallel to each other, spaced apart, and the vertical metal strip of width constitutes.
3. highly effective and safe environmental protection blowing device according to claim 2 is characterized in that: described transverse set metal strip and vertically organizing between the metal strip is perpendicular to one another, stack successively, and the intersection is shaped on draw-in groove, is fixed mutually.
4. highly effective and safe environmental protection blowing device according to claim 3 is characterized in that: a side of described metal strip width is shaped on draw-in groove.
5. highly effective and safe environmental protection blowing device according to claim 3 is characterized in that: described metal strip width both sides are shaped on draw-in groove.
6. according to claim 4 or 5 described highly effective and safe environmental protection blowing devices, it is characterized in that: described draw-in groove engaging place spot welding connects.
7. highly effective and safe environmental protection blowing device according to claim 6, it is characterized in that: described discharge nozzle is L shaped, and the lower end is the bell mouth shape that enlarges gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102710990A CN101948940B (en) | 2010-09-03 | 2010-09-03 | Efficient, safe and environment-friendly blasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102710990A CN101948940B (en) | 2010-09-03 | 2010-09-03 | Efficient, safe and environment-friendly blasting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101948940A true CN101948940A (en) | 2011-01-19 |
| CN101948940B CN101948940B (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102710990A Active CN101948940B (en) | 2010-09-03 | 2010-09-03 | Efficient, safe and environment-friendly blasting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101948940B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719028A (en) * | 2020-05-27 | 2020-09-29 | 南通海鹰机电集团有限公司 | Energy-saving safe pulverized coal spraying system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107305A (en) * | 1987-12-15 | 1988-08-03 | 武汉钢铁设计研究院 | Labyrinthic anti-explosion device for bitumite-spraying in blast-furnace |
| CN2068510U (en) * | 1990-05-07 | 1991-01-02 | 东南大学 | Fine coal blowing unit of blast furnace |
| JPH09324206A (en) * | 1996-04-02 | 1997-12-16 | Nippon Steel Corp | Method for controlling rate of blowing pulverized powder to blast furnace and pulverized coal blowing device |
| CN1275168A (en) * | 1998-08-13 | 2000-11-29 | 浦项综合制铁株式会社 | Pulverized coal injecting apparatus |
| CN2451990Y (en) * | 2000-10-10 | 2001-10-03 | 济南钢铁集团总公司 | Pulverized coal conveyor |
| CN2750272Y (en) * | 2004-09-22 | 2006-01-04 | 天津天铁冶金集团有限公司 | Coal dust fluidizing and blowing device |
| CN201785419U (en) * | 2010-09-03 | 2011-04-06 | 南通海鹰机电集团有限公司 | High-efficiency, safe and environment-friendly injection device |
-
2010
- 2010-09-03 CN CN2010102710990A patent/CN101948940B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107305A (en) * | 1987-12-15 | 1988-08-03 | 武汉钢铁设计研究院 | Labyrinthic anti-explosion device for bitumite-spraying in blast-furnace |
| CN2068510U (en) * | 1990-05-07 | 1991-01-02 | 东南大学 | Fine coal blowing unit of blast furnace |
| JPH09324206A (en) * | 1996-04-02 | 1997-12-16 | Nippon Steel Corp | Method for controlling rate of blowing pulverized powder to blast furnace and pulverized coal blowing device |
| CN1275168A (en) * | 1998-08-13 | 2000-11-29 | 浦项综合制铁株式会社 | Pulverized coal injecting apparatus |
| CN2451990Y (en) * | 2000-10-10 | 2001-10-03 | 济南钢铁集团总公司 | Pulverized coal conveyor |
| CN2750272Y (en) * | 2004-09-22 | 2006-01-04 | 天津天铁冶金集团有限公司 | Coal dust fluidizing and blowing device |
| CN201785419U (en) * | 2010-09-03 | 2011-04-06 | 南通海鹰机电集团有限公司 | High-efficiency, safe and environment-friendly injection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719028A (en) * | 2020-05-27 | 2020-09-29 | 南通海鹰机电集团有限公司 | Energy-saving safe pulverized coal spraying system |
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| Publication number | Publication date |
|---|---|
| CN101948940B (en) | 2012-05-02 |
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Effective date of registration: 20240827 Address after: Room 1603, Building 3, 498 Minle Middle Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province, China 226299 Patentee after: Yang Yuneng Country or region after: China Address before: No. 898 Haihong Road, Qidong City, Jiangsu Province, China 226200 Patentee before: NANTONG HAIYING ELECTROMECHANICAL GROUP Co.,Ltd. Country or region before: China |