CN206514695U - A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device - Google Patents
A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device Download PDFInfo
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- CN206514695U CN206514695U CN201720114311.XU CN201720114311U CN206514695U CN 206514695 U CN206514695 U CN 206514695U CN 201720114311 U CN201720114311 U CN 201720114311U CN 206514695 U CN206514695 U CN 206514695U
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- China
- Prior art keywords
- gas
- pipeline
- limestone kiln
- heater
- flue 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.)
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- 239000007789 gas Substances 0.000 title claims abstract description 74
- 235000019738 Limestone Nutrition 0.000 title claims abstract description 27
- 239000006028 limestone Substances 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000002918 waste heat Substances 0.000 title claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 235000012255 calcium oxide Nutrition 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims 2
- 241000876852 Scorias Species 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009865 steel metallurgy Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device that the utility model is provided, including cooling circuit, flue gas pipeline and heated by gas pipeline；The cooling circuit burns pipeline, heater and evaporator in beam including being sequentially connected the working medium circulating pump of cyclization, gas；The air inlet of the flue gas pipeline is connected with gas combusting limestone kiln flue gas gas outlet, and having heaters, gas heater, sack cleaner, smoke induced draught fan are sequentially connected on the flue gas pipeline；The heated by gas pipeline is sequentially connected with gas heater and gas combusting limestone kiln air inlet.The apparatus structure is simple, with low cost, transformation is convenient, on the one hand greatlys save the power consumption of system, has effectively reclaimed heat, while substantially prolongs the service life of sack cleaner.
Description
Technical field
The utility model belongs to energy-saving equipment field, more particularly to a kind of novel metallurgical gas combusting limestone kiln waste heat recovery dress
Put.
Background technology
Iron and steel metallurgy enterprise makes steel workshop section and sintering workshop section, it is necessary to carry out to flue gas to adapt to environmental requirement at it
Desulfurization, and the smog discharge temperature of 2 workshop section is relatively low, therefore, the technique that flue gas desulfurization uses wet desulphurization mostly.Due to flue gas
Need substantial amounts of lime stone in process of wet desulphurization, therefore iron and steel metallurgy enterprise self-built limekiln mostly.
Existing limekiln is divided into two kinds according to structure：One kind is rotary kiln, and main body outward appearance is the horizontal cylinder structure rotated；
Another is shaft furnace (shaft kiln), and outward appearance is static vertical cylinder structure.Existing limekiln is also classified into two kinds according to fuel：It is a kind of
It is multifuel combustion lime shaft kiln, its fuel can be coke, coke powder, coal etc.；Another is gas burning lime kiln, its fuel be blast furnace gas,
Coke-stove gas, natural gas, producer gas etc..Due to producing substantial amounts of blast furnace gas, therefore, Ferrous Metallurgy in ironmaking processes
The self-built limekiln of enterprise is generally gas combusting limestone kiln, and its fuel is used as using blast furnace gas.
Existing gas combusting limestone kiln, is shown in Fig. 2, and due to its design feature, the upper and lower burning girder of shaft furnace is in the course of the work
It is heated, in order to keep the strength and stiffness of upper and lower girder, the cooling of current upper and lower girder uses heat conduction oil cooling, specifically
Technique it is as follows：About 190 DEG C of conduction oil enters in girder under the driving of its circulating pump is heated to 205 DEG C or so, leaves master
Beam enters an air cooler, and about 190 DEG C are cooled in air cooler, enters again under circulating pump driving in beam；So circulation,
Upper and lower girder is protected.And the normal temperature air for flowing through air cooler is entered by air blower air blast, the high temperature air after heat absorption is put
Sky, this portion of energy is wasted, such as the gas combusting limestone kiln of a 300T/d yield, and the flow of conduction oil is about
350m3/ h, the lift about 75m of circulating pump, circulating pump one open one standby, are 160kW per pump institute distribution acc power；For air cooler
Speech, normal temperature air enters air cooler under air blower driving, conduction oil is cooled down, the air emptying after heating, a gas
Burnt lime vertical kiln is usually required with 6 air blowers, the blow rate required 68000m of every air blower3/ h, institute's gas-distributing motor are 11kW.
In addition, existing gas combusting limestone kiln additionally there are great energy consumption and waste：
For the gas combusting limestone kiln of a 300T/d yield, the flue-gas temperature of kiln discharge is 300~350 DEG C of left sides
The right side, matches somebody with somebody air inducing fan delivery for 125000m3Contain substantial amounts of dust in/h, flue gas, in order to reach discharge standard, flue gas is in row
Need to carry out efficient dust removal process before putting, it is at present to use sack cleaner more.Inlet temperature requirement of the sack cleaner to flue gas
Higher, such as flue gas is higher than 200 DEG C, and cloth bag can not bear high temperature, can burn out；Such as flue gas is less than 150 DEG C, and flue gas can condense, flue dust
In calcium oxide become calcium hydroxide, cloth bag is pasted into eye, hanging bag is caused.At present, processing of most gas combusting limestone kiln to flue gas
Technique is to set a gas heater to carry out waste heat recovery to flue gas, for heating furnace coal gas.But, the stream of blast furnace gas
Amount is smaller, such as the gas combusting limestone kiln of 300T/d yield, and the consumption of blast furnace gas is only 20000Nm3/ h, due to blast furnace coal tolerance
Larger greatly different feature between exhaust gas volumn, winter, flue-gas temperature maintains essentially in 200 DEG C after gas heater, can be straight
Tap into sack cleaner；And in summer, blast furnace gas is only capable of flue gas cool-down to~240 DEG C, therefore, enter cloth bag in flue gas
One air cooler must also be set before dedusting, and the work of the air cooler is with seasonal variations：Summer, flue-gas temperature is higher, and normal temperature air exists
Enter air cooler under air blower driving, flue gas is further cooled to and meets sack cleaner job requirement, the high temperature after heat absorption
Air is also vented；Both energy is wasted, the power consumption of air blower is added again.
Utility model content
Technical problem：In order to solve the defect of prior art, the utility model provides a kind of novel metallurgical gas burnt lime
Shaft furnace waste-heat recovery device.
Technical scheme：A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device that the utility model is provided, including it is cold
But circulation loop, flue gas pipeline and heated by gas pipeline；The cooling circuit includes the working medium circulation for being sequentially connected cyclization
Pump, gas burn pipeline, heater and evaporator in beam；The air inlet of the flue gas pipeline connects with gas combusting limestone kiln flue gas gas outlet
Connect, having heaters, gas heater, sack cleaner, smoke induced draught fan are sequentially connected on the flue gas pipeline；The coal gas adds
Pipe line is sequentially connected with gas heater and gas combusting limestone kiln air inlet.
Improved as another, the gas outlet of the smoke induced draught fan is connected with chimney.
Improved as another, the cycle fluid in the cooling circuit is conduction oil.
Beneficial effect：The utility model provide metallurgical gas combusting limestone kiln waste-heat recovery device is simple in construction, cost is low
Honest and clean, transformation is convenient, on the one hand greatlys save the power consumption of system, has reclaimed the heat of air cooler, substantially prolongs simultaneously
The service life of sack cleaner, on the other hand, the heat of recovery are used to produce useful steam or other media, make for technique
With reducing to thermal pollution caused by the heat dissipation of environment.
Brief description of the drawings
Fig. 1 is the structural representation of novel metallurgical gas combusting limestone kiln waste-heat recovery device of the present utility model.
Fig. 2 is the structural representation of the UTILIZATION OF VESIDUAL HEAT IN of existing gas combusting limestone kiln.
Embodiment
The utility model novel metallurgical gas combusting limestone kiln waste-heat recovery device is further illustrated below.
Novel metallurgical gas combusting limestone kiln waste-heat recovery device, is shown in Fig. 1, including cooling circuit 1, the and of flue gas pipeline 2
Heated by gas pipeline 3.
Cooling circuit 1 burns pipeline 12, the and of heater 13 in beam including being sequentially connected the working medium circulating pump 11 of cyclization, gas
Evaporator 14；Cycle fluid in cooling circuit 1 is conduction oil.
The air inlet of flue gas pipeline 2 is connected with the flue gas gas outlet of gas combusting limestone kiln 4, is connected with turn on flue gas pipeline 2
Heater 13, gas heater 21, sack cleaner 22, smoke induced draught fan 23, gas outlet and the chimney 24 of smoke induced draught fan 23
Connection；Heated by gas pipeline 3 is sequentially connected with gas heater 21 and the air inlet of gas combusting limestone kiln 4.
The use principle of the device is as follows：
(1) about 190 DEG C of conduction oils enter pipeline 12 in gas burning beam in the presence of working medium circulating pump 11, and burning beam to gas is carried out
Cooling, working medium is heated to 205 DEG C or so, into heater 13；This part still retains original technique, to ensure that gas burns beam
Cooling effect is constant；
(2) after kiln discharge 300~350 DEG C of flue gases flue gas, into heater 13, heat to gas burn beam cooling after 205
DEG C conduction oil working medium, flue gas cool-down enters back into gas heater 21 to BF gas heating to 250 DEG C or so, is finally cooled to about
Sack cleaner is directly entered after 190 DEG C, the flue gas after dedusting is directly discharged；
(3) the heated device 13 of about 205 DEG C of conduction oil working medium can be warming up to~215 DEG C, enter back into evaporator 14, in evaporation
In device 14, conduction oil is cooled to about 190 DEG C, then into gas burning beam under the driving of working medium circulating pump 11；
(4) in evaporator 14, low temperature work of the high temperature refrigerant of cooling circuit 1 with extraneous input into evaporator 14
Matter exchanges heat, and makes heat of the cryogenic fluid heating to be absorbed using cooling circuit 1；For example, using cold water as cryogenic fluid,
The driving of cold water water pump is lower to enter the heat absorption evaporation of evaporator 14, finally outwardly provides low pressure (about 0.6MPaG) saturated vapor.
In addition to the implementation, the utility model can also have other embodiment.All use equivalent substitutions or equivalent change
The technical scheme to be formed is changed, the protection domain of the utility model requirement is all fallen within.
Claims (3)
1. a kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device, it is characterised in that：Including cooling circuit (1), cigarette
Air pipe (2) and heated by gas pipeline (3)；The cooling circuit (1) includes being sequentially connected the working medium circulating pump of cyclization
(11), gas burns pipeline (12), heater (13) and evaporator (14) in beam；The air inlet of the flue gas pipeline (2) and gas scoria
Be sequentially connected on the connection of grey shaft furnace (4) flue gas gas outlet, the flue gas pipeline (2) having heaters (13), gas heater (21),
Sack cleaner (22), smoke induced draught fan (23)；The heated by gas pipeline (3) is erected with gas heater (21) gentle burnt lime
Kiln (4) air inlet is sequentially connected.
2. according to claim a kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device, it is characterised in that：The cigarette
The gas outlet of gas air-introduced machine (23) is connected with chimney (24).
3. according to claim a kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device, it is characterised in that：It is described cold
But the cycle fluid in circulation loop (1) is conduction oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720114311.XU CN206514695U (en) | 2017-02-07 | 2017-02-07 | A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720114311.XU CN206514695U (en) | 2017-02-07 | 2017-02-07 | A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206514695U true CN206514695U (en) | 2017-09-22 |
Family
ID=59867532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720114311.XU Active CN206514695U (en) | 2017-02-07 | 2017-02-07 | A kind of novel metallurgical gas combusting limestone kiln waste-heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206514695U (en) |
-
2017
- 2017-02-07 CN CN201720114311.XU patent/CN206514695U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 210000 No. 749, Binjiang Road, Jiangning Economic Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Huadian energy saving and environmental protection Co.,Ltd. Address before: 801, Phoenix International Building, No. 389 Central Road, Nanjing, Jiangsu Province, 210000 Patentee before: NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |