CN205170895U - Rotary kiln CO2 and argon gas are used for controlling means of converter smelting - Google Patents
Rotary kiln CO2 and argon gas are used for controlling means of converter smelting Download PDFInfo
- Publication number
- CN205170895U CN205170895U CN201520383915.5U CN201520383915U CN205170895U CN 205170895 U CN205170895 U CN 205170895U CN 201520383915 U CN201520383915 U CN 201520383915U CN 205170895 U CN205170895 U CN 205170895U
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- CN
- China
- Prior art keywords
- rotary kiln
- argon gas
- carbon dioxide
- converter
- converter smelting
- 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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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
- 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
Abstract
The utility model provides a rotary kiln CO2 and argon gas are used for controlling means of converter smelting. Include: the part is smelted in rotary kiln part, converter, and wherein the rotary kiln sets up the inner tube combustion chamber for the burning produces the heat source, urceolus calcining chamber for placing and treating the calcined limestone, set up the heat transfer wall between the interior urceolus, the carbon dioxide that the roasting produced is after pre -heater, discharge are collected, and warp dust removal again, drying, pressurization get into the pressure surge tank, obtain uncontaminated carbon dioxide, the compound control system of smelting that the part includes carbon dioxide, argon gas is smelted in the converter, mainly by carbon dioxide, argon gas pressure surge tank to reach pressure, flow, temperature -detecting device, constitutions such as solenoid valve and governing valve. Through the control of respective solenoid valve and governing valve during the smelting, in earlier stage, carry out the carbon dioxide blowing middle period, the argon gas blowing is carried out to the later stage, each other is reserve moreover. The utility model discloses both reduce steelmaking manufacturing cost, and can reduce carbon again and discharge and green house effect, accorded with circular economy.
Description
Technical field
The utility model relates to iron and steel metallurgy field, especially the metallurgy industry carbon dioxide that utilizes indirect calcination Wingdale to produce and outer for the smelting control device of argon gas compound for steel-making converter.
Background technology
Copenhagen climate change investigation in 2009, makes low-carbon economy become global focus.The Economic Development Mode of low-carbon economy based on less energy-consumption, low stain, low emission, it is the fundamental change of the mode of production to a large amount of fossil energy of existing consumption, a large amount of discharge carbonic acid gas, the Chinese government promises to undertake the year two thousand twenty, the CO2 emissions of per GDP than decline 40-45% in 2005, and is included into national economy and social development medium-term and long-term plans as the binding indicator.
Steel manufacture process Carbon emission accounts for about 16% of industrial carbon dioxide quantity discharged, total release reaches nearly 2,000,000,000 tons, become China Carbon emission rich and influential family, how to reduce Carbon emission and Resources of Carbon Dioxide utilized the attention more and more causing iron and steel worker.
Iron and steel enterprise is rotary kiln for the main kiln type of calcination particulate lime at present, and this type of kiln is used for calcination 20-40mm small grain size Wingdale, adopts coal gas calcination together with Wingdale to produce quickened lime.Because lime burns together with fuel mix, decompose the carbonic acid gas produced and contain residual coal gas, be difficult to the carbonic acid gas reclaiming discharge, and the high-temperature flue gas that burning produces is due to containing a large amount of dust, recovery difficult is larger, cost is high, waste heat is also difficult to utilize, almost directly discharge air at present, pollute environment and energy dissipation, do not want to adapt to the recycling economy of national requirements, low-carbon emission, be therefore badly in need of a kind ofly fundamentally solving that calcined limestone is separated, extracts, the pure CO 2 technology of low cost.
Current domestic converter adopts argon gas bottom blowing to smelt substantially, ladle argon-blown principle is that the argon gas with certain pressure is formed circulation by spray gun or Argon gas permeable brick, in circulation process macrobead be mingled with, deoxidation products flow through top slag lower region time transmit enter top slag, the bubble that Argon is formed simultaneously forms relative vacuum in molten steel, serves the trapping to gas in steel and excretion.Along with the raising of argon gas cost in recent years, and carbon plays an important role in steelmaking process---and not only make steel have good mechanical property, and can react with various oxide compound and gaseous oxygen, serve as main energy source.Therefore need the carbon dioxide seeking to utilize metallurgical production process calcined limestone to produce to be resource, minimizing greenhouse gas emission method substitutes argon gas and carries out converter, stainless smelting control.
Utility model content
For the problems referred to above that existing converter steelmaking, calcined limestone exist, the main purpose of the technical scheme that the utility model provides is:
A kind of rotary kiln CO is provided
2the control device of converter smelting is used for argon gas.
To achieve these goals, the utility model have employed following technical scheme:
A kind of rotary kiln CO
2be used for the control device of converter smelting with argon gas, it is characterized in that, comprising:
Rotary kiln part, converter smelting part,
Wherein rotary kiln arranges inner core combustion chamber, produces thermal source in order to burning; Urceolus calcining compartment, is treated calcined limestone in order to place, and is separated by inner/outer tube insulated wall and combustion chamber, in order to produce clean carbon dioxide;
Converter smelting part comprises carbon dioxide, the compound of argon gas smelts Controlling System, primarily of carbonic acid gas, argon pressure surge tank, and pressure, flow, temperature-detecting device, the composition such as magnetic valve and variable valve.
Another aspect of the present utility model, also comprises the primary heater unit be arranged at above kiln tail, is provided with a plurality of Wingdale room and preheating chamber, and described preheating chamber is by pipeline and rotary kiln combustion chamber UNICOM, and described Wingdale room is through intermediate bin and calcining compartment UNICOM.
Another aspect of the present utility model, also comprises the calcined by rotary kiln Wingdale be arranged at for converter steelmaking needs, the carbon dioxide of generation, and sequentially pass through preheating lime stone device, effuser collection, dedusting, dehumidification purification, pressurization enters pressure surge tank.
Another aspect of the present utility model, also comprises the magnetic valve, variable valve and the proofing unit that are arranged at after carbonic acid gas, argon pressure surge tank, for the flow of automatic regulation of carbon dioxide, argon gas.
What needs further illustrated is that described gas sampling pipeline is connected with residual heat using device through dedusting, variable frequency adjustment blower fan.
What needs further illustrated is the thermal source that rotary kiln inner core calcined limestone produces, and the waste heat through dedusting, variable frequency adjustment blower fan, recovery is connected with waste gas afterheat recovery unit.
What needs further illustrated is that rotary kiln head is provided with water cooler, and cool fast in order to lime calcining produced, cooled lime is sent through transfer roller and entered finished bin.
What needs further illustrated is that the utility model device also can be applicable to stainless steel art AOD smelting control.
By the enforcement to technical solutions of the utility model, following technique effect can be obtained:
The carbonic acid gas of 1, discharging is easy to purification, obtains pure carbonic acid gas, substitutes argon gas and is used for converter smelting, makes industrial wastes obtain effective utilization of circulating, is conducive to solving the problem of environmental pollutions such as carbon emission;
2, carbonic acid gas substitutes argon gas blowing, can reduce the volatilization of metallic iron partial oxidation, reduce converter smelting dust emission concentration;
3, adopt carbonic acid gas to substitute argon gas blowing, because argon gas price is 6-8 times of carbonic acid gas price, production cost is obviously reduced, for enterprise brings significant economic benefit;
, owing to there is CO in 4, bottom-blowing of converter carbonic acid gas
2+ C=2CO, generates the CO being blown into gas 2 times, not only can strengthen melting bath stirring, be conducive to the decon that degass, and can improve the quality and quantity reclaiming coal gas of converter.
5, carbon dioxide, argon gas compound are smelted, for subsequent use each other, are both conducive to production operation, and also can improve production operational availability;
6, rotary kiln thermo-efficiency improves, rotary kiln decomposition temperature is easy to control, and avoid energy dissipation, the unit product thermal losses for decomposition of limestone reduces, and can make full use of coal dust firing, or blast furnace, converter, coke oven and mixed gas carry out calcination as fuel;
The flue gas temperature of 7, discharging after burning is high, and recoverable, is converted to steam and generates electricity;
8, calcination of lime is even, is easy to control, and activity degree is good, product purity improves, and sulphur content reduces, and spy is standby is suitable for the interpolation slag making improving steel-making, stainless steel product combustion intensity, high-quality steel grade;
9, the present invention not only fundamentally makes carbon dioxide recovery cost reduce, and carbonic acid gas improves constantly as the application level of resource in field of steel-making, be conducive to the progress advancing process for making, positive effect is served to the Greenhouse effect alleviating air simultaneously, there is significant economic benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is a kind of rotary kiln CO of the present utility model
2the structural representation of the control device of converter smelting is used for argon gas.
Embodiment
Be described the technical solution of the utility model below by way of specific embodiment, with under the conflict free prerequisite of the purpose of this utility model, the technical characteristic in the embodiment hereinafter mentioned and embodiment can combine mutually.
As shown in Figure 1, the technical scheme that the utility model adopts is: rotary kiln part comprises rotary kiln inner core combustion chamber, produces thermal source in order to burning; Urceolus calcining compartment, treats calcined limestone in order to place, arranges heat transfer wall between inner/outer tube.The carbonic acid gas produced after lime kilning stone to Wingdale preheating, enters pressure surge tank through dedusting, drying, pressurization again by preheater after effuser is collected, in order to obtain clean carbon dioxide; Converter smelting part comprises carbon dioxide, the compound of argon gas smelts Controlling System, primarily of carbonic acid gas, argon pressure surge tank, and pressure, flow, temperature-detecting device, the composition such as magnetic valve and variable valve.The argon gas of outer confession directly enters pressure surge tank.Two kinds of gases complete the smelting of converter smelting through respective magnetic valve and governor valve control.
Embodiment of the present invention relates to a kind of rotary kiln CO
2be used for the control device of converter smelting with argon gas, for making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail:
Fig. 1 is device schematic diagram of the present invention, being denoted as in figure: 1-Wingdale discharge opening, 2-primary heater unit, 3-Wingdale room, 4-preheating gas room, 5-feeding machine, 6 intermediate bins, 7-hydraulic push rod, 8-feeding mouth, 9-rotary kiln heat transfer wall, 10-rotary kiln combustion chamber (inner core), 11-calcined by rotary kiln room (urceolus), 12-rotary kiln, the vertical cooling room of 13-, 14-blower fan, 15-gas line, 16-rotary kiln burner, 17-exhaust pipeline, 18-gas sampling pipe, 19-cleaning apparatus, 20-regulates blower fan, 21-residual heat using device, 22-effuser, 23-dedusting and purifying device, 24-variable frequency adjustment blower fan, 25-drying installation, 26-converter, 27-bottom-blowing device, 28-top blast device, 29-variable valve, 61-supercharging device, 62-pressure surge tank, 63-magnetic valve, 64-variable valve, 65-flow detection, 66-magnetic valve, 67-temperature detection, 68-pressure detection, 69-safety valve, 71-supercharging device, 72-pressure surge tank, 73-magnetic valve, 74-variable valve, 75-flow detection, 76-magnetic valve, 77-temperature detection, 78-pressure detection, 79-safety valve.
The utility model main process: Wingdale adds in a plurality of Wingdale rooms 3 in heat-exchanger rig 2 by discharge opening 1, discharge opening 1 there is cover plate, automatically open when discharging, self-closed is carried out after discharging, bottom, a plurality of Wingdale room 3 is equipped with feeding machine 5 respectively, Wingdale after preheating is by after feeding machine 5 timing to intermediate bin 6 further preheating, by hydraulic push rod 7, Wingdale is delivered in rotary kiln 12 through feeding mouth 8, when arriving calcination band, give gas through piping 15 outward, the secondary combustion-supporting wind that burner 16 and burner blower 14 are sent here burns, Wingdale quick burning is decomposed, enter the vertical cooling room 13 of kiln hood after decomposition to cool, the hot gas that cooling produces enters rotary kiln as secondary combustion-supporting wind by pipeline through blower fan 14 and circulates, the finished product ash cooled enters ash silo.
The carbon dioxide that in calcined by rotary kiln room 11, calcined limestone produces, preheating lime stone is carried out through intermediate bin 6, preheating is carried out again through 3 pairs, a plurality of preheating lime stone room Wingdale, after collect through effuser 22, carbon dioxide after collection is through dedusting and purifying device 23, variable frequency adjustment blower fan 24, drying installation 25, pressurizing device 61 enters pressure surge tank 62, pressure surge tank 62 is provided with temperature detection 67, pressure detection 68, and safety valve 69, pressure-pot 62 outlet conduit is provided with magnetic valve 63 successively, variable valve 64, flow detector 65, and magnetic valve 66, control flow and the pressure of carbonic acid gas, and enter converter by converter bottom-blowing device and blow, enter top blast device 28 by variable valve 69 to blow.
The outer argon gas that supplies enters pressure surge tank 72 through pressurizing device 71, pressure surge tank 72 is provided with temperature detection 77, pressure detection 78, and safety valve 79, pressure surge tank 72 outlet conduit is provided with successively magnetic valve 73, variable valve 74, flow detector 75 and magnetic valve 76, control the flow of argon gas and pressure, and enter converter by converter bottom-blowing device 27 and blow, enter top blast device 28 by variable valve 29 and blow.
The waste gas that rotary kiln combustion chamber 10 produces is connected with a plurality of preheating gas room 4 by exhaust pipeline 17, and in primary heater unit 2, the Wingdale of Wingdale room 3 carries out preheating.A plurality of preheating gas rooms 4 closed upper part, side is connected with gas sampling pipe 18.Waste gas after preheating is collected by gas sampling pipe 18 and is sent dust-removal system 19, regulates blower fan 20 automatically to regulate the flow of waste gas, enters waste-heat recovery device 21 afterwards for full factory or carry out cogeneration.
It should be noted that in embodiment, rotary system burner combustion system can adopt oxygen-enriched combusting further, energy-saving and cost-reducing, reduces costs.
It should be noted that in above-mentioned embodiment, the quantity of primary heater unit Wingdale room 4 and preheating gas room 5, carry out composite design according to lime actual production output.
Be not difficult to find, the utility model is by utilizing rotary kiln inner/outer tube combustion chamber, calcining compartment, the carbonic acid gas that calcination produces, through simple udst separation, dry, pressurization directly can enter pressure surge tank and use, obtain clean carbon dioxide at low cost, smelt control with the outer compound of carrying out for argon gas, two kinds of gases are not only independent but also for subsequent use each other, converter smelting and stainless steel smelting early stage, mid-term carries out carbonic acid gas blowing, smelt the outer argon gas that supplies of later stage dependence to blow, not only significantly can reduce smelting cost, reduce slag iron loss, strengthening melting bath stirring, improve dephosphorization rate, improve gas recovery quality, and the life-span of bottom blowing system can be improved.For domestic reduction Carbon emission, the integrated application of resource, realize steelmaking process and save energy and reduce the cost and improve steel quality and open the new a kind of approach more having market outlook, really responded national policy, achieve recycling economy and low-carbon energy-saving reduces discharging.
The above embodiments are only that part of the present utility model embodies; can not contain all of the present utility model; on the basis of above-described embodiment and accompanying drawing; those skilled in the art can obtain more embodiment according to the utility model under the prerequisite not paying creative work; and similar transformation is carried out to other similar smeltings and similar kiln type, therefore these embodiments obtained under not paying the prerequisite of creative work all should be included in protection domain of the present utility model.
Claims (4)
1. a rotary kiln CO
2be used for the control device of converter smelting with argon gas, it is characterized in that, comprising:
Rotary kiln part, converter smelting part,
Wherein rotary kiln arranges inner core combustion chamber, produces thermal source in order to burning; Urceolus calcining compartment, is treated calcined limestone in order to place, and is separated by inner/outer tube insulated wall and combustion chamber, in order to produce clean carbon dioxide;
Converter smelting part comprises carbon dioxide, the compound of argon gas smelts Controlling System, primarily of carbonic acid gas, argon pressure surge tank, and pressure, flow, temperature-detecting device, the composition such as magnetic valve and variable valve.
2. a kind of rotary kiln CO as claimed in claim 1
2the control device of converter smelting is used for argon gas, it is characterized in that, also comprise the primary heater unit be arranged at above kiln tail, containing a plurality of Wingdale room and preheating chamber, preheating chamber is by pipeline and rotary kiln combustion chamber UNICOM, and Wingdale room is through intermediate bin and calcining compartment UNICOM.
3. a kind of rotary kiln CO as claimed in claim 1
2the control device of converter smelting is used for argon gas, it is characterized in that, also comprise the calcined by rotary kiln Wingdale for converter steelmaking needs, the carbon dioxide of generation, sequentially pass through preheating lime stone device, effuser collection, dedusting, dehumidification purification, pressurization enters pressure surge tank.
4. a kind of rotary kiln CO as claimed in claim 1
2be used for the control device of converter smelting with argon gas, it is characterized in that, also comprise and be arranged at carbonic acid gas, argon pressure surge tank and magnetic valve, variable valve and proofing unit, for the flow of automatic regulation of carbon dioxide, argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383915.5U CN205170895U (en) | 2015-06-01 | 2015-06-01 | Rotary kiln CO2 and argon gas are used for controlling means of converter smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383915.5U CN205170895U (en) | 2015-06-01 | 2015-06-01 | Rotary kiln CO2 and argon gas are used for controlling means of converter smelting |
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| Publication Number | Publication Date |
|---|---|
| CN205170895U true CN205170895U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520383915.5U Expired - Fee Related CN205170895U (en) | 2015-06-01 | 2015-06-01 | Rotary kiln CO2 and argon gas are used for controlling means of converter smelting |
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| CN (1) | CN205170895U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105274278A (en) * | 2015-06-01 | 2016-01-27 | 李正福 | Control device and method for converter smelting through CO2 and argon of rotary kiln |
| CN108947280A (en) * | 2018-08-20 | 2018-12-07 | 石家庄圣宏达热能工程技术股份有限公司 | A kind of furnace atmosphere circulation formula lime stone muffle calcination system |
| CN112033145A (en) * | 2020-11-05 | 2020-12-04 | 小跃科技(北京)有限公司 | Rotary kiln capable of improving calcination efficiency |
-
2015
- 2015-06-01 CN CN201520383915.5U patent/CN205170895U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105274278A (en) * | 2015-06-01 | 2016-01-27 | 李正福 | Control device and method for converter smelting through CO2 and argon of rotary kiln |
| CN108947280A (en) * | 2018-08-20 | 2018-12-07 | 石家庄圣宏达热能工程技术股份有限公司 | A kind of furnace atmosphere circulation formula lime stone muffle calcination system |
| CN108947280B (en) * | 2018-08-20 | 2024-02-23 | 石家庄圣宏达热能工程技术股份有限公司 | Furnace gas circulation type limestone flame-proof calcining system |
| CN112033145A (en) * | 2020-11-05 | 2020-12-04 | 小跃科技(北京)有限公司 | Rotary kiln capable of improving calcination efficiency |
| CN112033145B (en) * | 2020-11-05 | 2021-03-02 | 小跃科技(北京)有限公司 | Rotary kiln capable of improving calcination efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20180601 |