CN201024139Y - Flue gas circulation energy saving and environmental protection metallurgical lime calcining kiln - Google Patents
Flue gas circulation energy saving and environmental protection metallurgical lime calcining kiln Download PDFInfo
- Publication number
- CN201024139Y CN201024139Y CNU2007200205952U CN200720020595U CN201024139Y CN 201024139 Y CN201024139 Y CN 201024139Y CN U2007200205952 U CNU2007200205952 U CN U2007200205952U CN 200720020595 U CN200720020595 U CN 200720020595U CN 201024139 Y CN201024139 Y CN 201024139Y
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- CN
- China
- Prior art keywords
- flue gas
- zone
- flue
- gas circulation
- saving
- 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 - Fee Related
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000001354 calcination Methods 0.000 title claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 14
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 14
- 239000004571 lime Substances 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 title 1
- 238000004321 preservation Methods 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract 2
- 230000007704 transition Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 206010022000 influenza Diseases 0.000 description 2
- 241000876852 Scorias Species 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Furnace Details (AREA)
Abstract
本实用新型是一种烟气循环式节能环保冶金石灰煅烧窑，安装于保温区(7)下口附近周围并带有若干个送烟口的下环形烟道(11)通过下引风机(12)和烟气管(14)与上环形烟道(15)连接；所述送烟口与保温区(7)相通；所述上环形烟道(15)安装在预热区(4)上口附近周围并带有若干个与预热区(4)相通的烟气回收口。在燃烧室燃烧不够充分的烟气，在引风机作用下经过两路烟气管送入燃烧室下部继续燃烧，反复循环利用，不仅提高了燃料的利用率，而且有效降低了环境污染程度。
The utility model is an energy-saving and environment-friendly metallurgical lime calcination kiln with flue gas circulation, which is installed around the lower opening of the heat preservation area (7) and has a lower annular flue (11) with several smoke delivery ports passing through the lower induced draft fan (12) ) and the flue gas pipe (14) are connected with the upper annular flue (15); the described smoke delivery port communicates with the thermal insulation area (7); the upper annular flue (15) is installed on the upper opening of the preheating area (4) There are several flue gas recovery ports communicating with the preheating zone (4) around the vicinity. The flue gas that is not fully burned in the combustion chamber is sent to the lower part of the combustion chamber through two flue gas pipes under the action of the induced draft fan to continue combustion and repeated recycling, which not only improves the utilization rate of fuel, but also effectively reduces the degree of environmental pollution.
Description
Technical field the utility model relates to a kind of calcining kiln, specifically, is a kind of smoke gas circulating type energy-saving environment protective smelting lime calcining kiln.
The most coals that use of the existing smelting lime calcining kiln of background technology or roasting kiln are made fuel, not only can produce a large amount of black smoke pollution atmospheric environments owing to be difficult to sufficient combustion, and the separation of cinder coal ash causes surviving and does the reduction of efficient.
China utility model patent CN200520024865.8 discloses " environmental-protection energy-saving lime incineration kiln ", and it adopts coal gas to make fuel, has solved the problems referred to above preferably.But this structure still exists gas-fired complete inadequately, and the heat energy utilization rate is on the low side, the more high deficiency of energy consumption.On the other hand, its high temperature storehouse is cylindrical, and storehouse internal combustion firepower can not be satisfactory.
Utility model content technical problem to be solved in the utility model is: a kind of smoke gas circulating type energy-saving environment protective smelting lime calcining kiln is provided, utilize system by increasing flue gas recirculation, improve the cavity configuration shape, unexpectedly one one is improved coal gas thermo-efficiency, reduce fuel cost, reduce topsoil, and improve burning quality, to overcome the defective of above-mentioned existing procucts.
The technical scheme that its technical problem that solves the utility model adopts is as follows:
A kind of smoke gas circulating type energy-saving environment protective smelting lime calcining kiln, comprise that the upper end has opening for feed, the lower end has the kiln body of discharge port, the kiln intracoelomic cavity is followed successively by preheating zone, high-temperature zone and the heat preservation zone that communicates from top to bottom, it is characterized in that: around being installed near the heat preservation zone end opening and have several following annular flues that send mouth and be connected with last annular flue with fume pipe by induced draft fan down; The described mouth that send communicates with heat preservation zone; Described annular flue be installed in the preheating zone suitable for reading near around and have several flue gases that communicate with the preheating zone and reclaim mouth.
The high-temperature zone is spherical, and its outer wall is depressed in kiln body middle part.
The resistance chimney is installed below opening for feed, and the position of going up annular flue is higher than the lower end that hinders chimney.
The resistance chimney accounts for the 15-25% of preheating zone height down into the length of inside, preheating zone.
The joint portion of high-temperature zone and heat preservation zone is an arc-shaped transition.
Set into fire hole around in the high-temperature zone, going into fire hole is three layers, and every layer has several.
Positively effect of the present utility model is: (1), at combustion chambers burn sufficient flue gas inadequately, sending into the bottom, combustion chamber through the two-way fume pipe under the induced draft fan effect burns away, recycle has repeatedly not only improved the utilization ratio of fuel, and effectively reduces the environmental pollution degree.(2), flue gas rises along this district's inwall in the preheating zone, stopped by the obstruct drum outer wall of suitable length when arriving the top, and be drawn out of the participation circulating combustion more under the induced draft fan effect down, unusual outstanding of this design effect, air circulation obviously increases.(3), be provided with three layers around the high-temperature zone and go into fire hole, the high-temperature zone is spherical, and be depressed in kiln body middle part, this zone outer diameter obviously dwindles, and the space of economizing out is used to install induced draft fan, make whole device structure compactness, province ground more, on the other hand, make firepower more concentrated, reach with the stone scoria, the calcining better effects if, final product quality is more excellent.(4), high-temperature zone and heat preservation zone joint portion be arc-shaped transition, the flue gas circulation is more smooth.
Description of drawings Fig. 1 is a structural representation of the present utility model.
Embodiment further specifies the utility model below in conjunction with drawings and Examples, but protection content of the present utility model is not limited to present embodiment.
As shown in Figure 1, kiln body 2 upper ends of present embodiment have opening for feed 1, and the lower end has discharge port 10.Wherein, discharge port 10 is uniform four in front, rear, left and right.Kiln body 2 inner chambers are followed successively by preheating zone 4, high-temperature zone 5 and the heat preservation zone 7 that communicates from top to bottom.Wherein, high-temperature zone 5 is spherical, and is depressed in kiln body 2 middle parts.High-temperature zone 5 is an arc-shaped transition with the joint portion of heat preservation zone 7.
The fire hole 6 of going into that communicates with high-temperature zone 5 is divided into three layers, 12 every layer.Going into fire hole 6 is connected with two gas furnaces 9 respectively with two gas pipes 8 by induced draft fan 13 on two platforms.Wherein, induced draft fan 13 is installed in high-temperature zone 5 outer walls space on every side on two platforms, and the power that coal gas is blown into high-temperature zone 5 is provided.。
Around being installed near heat preservation zone 7 end openings and have eight and send the following annular flue 11 of mouth to be connected with last annular flue 15 with two fume pipes 14 by induced draft fan 12 under two platforms, the described mouth that send communicates with heat preservation zone 7, described annular flue 15 be installed in preheating zone 4 suitable for reading near around and have eight flue gases that communicate with preheating zone 4 and reclaim mouths.Following induced draft fan 12 provides circulating flue gas from last annular flue 15 downward annular flues 11 and then send into power in the heat preservation zone 7.
A metal resistance chimney 3 that diameter is suitable with opening for feed is installed below opening for feed 1, and this resistance chimney 3 accounts for the 15-25% of preheating zone 4 height down into the length of 4 inside, preheating zone.Described position of annular flue 15 is higher than the lower end that hinders chimney 3.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200205952U CN201024139Y (en) | 2007-04-13 | 2007-04-13 | Flue gas circulation energy saving and environmental protection metallurgical lime calcining kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200205952U CN201024139Y (en) | 2007-04-13 | 2007-04-13 | Flue gas circulation energy saving and environmental protection metallurgical lime calcining kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024139Y true CN201024139Y (en) | 2008-02-20 |
Family
ID=39097993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200205952U Expired - Fee Related CN201024139Y (en) | 2007-04-13 | 2007-04-13 | Flue gas circulation energy saving and environmental protection metallurgical lime calcining kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024139Y (en) |
-
2007
- 2007-04-13 CN CNU2007200205952U patent/CN201024139Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20110413 |