CN104880090A - Combustible gas long-distance delivery and reutilization device of cupola furnace - Google Patents
Combustible gas long-distance delivery and reutilization device of cupola furnace Download PDFInfo
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- CN104880090A CN104880090A CN201510295018.3A CN201510295018A CN104880090A CN 104880090 A CN104880090 A CN 104880090A CN 201510295018 A CN201510295018 A CN 201510295018A CN 104880090 A CN104880090 A CN 104880090A
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- fuel gas
- gas
- combustible gas
- reaction vessel
- air inlet
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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
- Y02P10/25—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to the field of casting, in particular to a combustible gas long-distance delivery and reutilization device of a cupola furnace, and solves the problem that the combustible gas of the cupola furnace cannot be delivered for a long distance for utilization. The device comprises a combustible gas collection device (1), a gas delivery pipe (5), and a combustible gas dust removal device (2), a combustible gas purification device (3) and an induced draft fan (4) which are sequentially arranged on the gas delivery pipe (5); the combustible gas collection device (1) is arranged below the charging port of the cupola furnace, is arranged close to the charging port and is fixedly connected with the cupola furnace, and the induced draft fan (4) is connected with combustible gas utilization equipment such as boilers through the gas delivery pipe (5). By adopting the combustible gas long-distance delivery and reutilization device, combustible gas dominated by CO gas emitted by the cupola furnace during production can be delivered to equipment such as boilers for a long distance to realize full and effective reutilization, and the goals of saving energy and reducing emission of enterprises are realized.
Description
Technical field
The present invention relates to casting field, specifically a kind of furnace cupola fuel gas long-distance sand transport re-use device.
Background technology
Existing Some Enterprises utilizes in device at blast-heating cupola burner gas residual heat, the existing design utilizing CO gas combustion in furnace gas, but actual utilizing status is not obvious." Heilungkiang is metallurgical " is in phase publication calendar year 2001 the 3rd the 20th page and the 21st page, publish Jixi Tian Long ductile iron pipe Co., Ltd, author: Wang Chunxing, show in " application of top formula blast-heating cupola in centrifugal ductile cast tube is produced " literary composition, just have top formula blast-heating cupola to utilize the burning again of CO in furnace gas to discuss.But the burning again of this kind of CO utilizes existence two kinds of defects, one is the top that top formula blast-heating cupola is arranged on charge door, because CO gas density is slightly less than the density of air, the CO gas in furnace cupola, when by charge door, naturally is understood and to be scattered an equal part from charge door; Two is because the air of charge door enters, and more can reduce CO gas concentration.Under regular situation, cupola charging mouth place CO gas concentration is stabilized in 15-18%, as CO gas concentration is down to less than 12.5%, can not realize burning again.
In prior art, there is not yet furnace cupola is discharged in process of production based on fuel gas (CO, CH of CO gas
4, H
2deng) long-distance sand transport recycling report.
In sum, in prior art, furnace cupola discharge in process of production based on fuel gas (CO, CH of CO gas
4, H
2deng) do not have effectively to utilize, more do not realize long-distance sand transport recycling, be unfavorable for that industry energy conservation reduces discharging.
Summary of the invention
The problem that the present invention can effectively not recycle at a distance in order to the fuel gas solving existing furnace cupola and discharge in process of production, provides a kind of furnace cupola fuel gas long-distance sand transport re-use device.
The present invention adopts following technical scheme to realize: furnace cupola fuel gas long-distance sand transport re-use device, comprises fuel gas dust arrester, fuel gas purifying plant, air-introduced machine that combustible gas collecting device, gas pipeline and gas pipeline set gradually; Described combustible gas collecting device is arranged at below cupola charging mouth, and arranges near charge door, is fixedly connected with furnace cupola; Described air-introduced machine utilizes equipment (such as: boiler etc.) to be connected by gas pipeline and fuel gas.
Combustible gas collecting device of the present invention is cylinder loop configuration, comprise the inner core of coaxial setting, urceolus and close ring-shaped flat top cover and the ring-shaped flat base plate of inside and outside cylinder top and bottom respectively, annular gas collection space is formed between inside and outside cylinder, footpath inside and outside with furnace cupola is identical respectively for the diameter of its inner core and urceolus, highly be about 1 meter, inner core bottom evenly offers some fuel gas access aperture, urceolus top is provided with fuel gas delivery outlet, and fuel gas delivery outlet is connected with gas pipeline.
As the improvement of combustible gas collecting device of the present invention, the space separating tube coaxially arranged with inside and outside cylinder is also provided with between the inside and outside cylinder of described combustible gas collecting device, the bottom of space separating tube is fixedly connected with ring-shaped flat base plate, space separating tube evenly offers fuel gas tap, and the height and position of the fuel gas tap that space separating tube is offered is consistent with the fuel gas access aperture height and position that inner core bottom is evenly offered; On inner core, fuel gas access aperture offers height and position below the separating tube height of space; Fill spark between space separating tube and inner core air inlet to catch and thick grit barrier material, as stainless steel turning material, slag and the corrosion-resistant fine-structure mesh of resistance to rusted metal etc.
Under the effect of system air-introduced machine, the mixing such as furnace cupola fuel gas furnace gas is when entering gathering-device, catch and thick grit barrier material owing to being equipped with spark between this gathering-device inner core air inlet and space separating tube, effectively can prevent entering of spark and thick grit in furnace cupola, can purify and enter gas in gathering-device, and the flammable gas explosion danger because spark causes can be prevented.
As the further improvement of combustible gas collecting device of the present invention, the urceolus top of described combustible gas collecting device is provided with inspection socket, and is equipped with Explosion-proof cap.
Inspection socket is used for checking and change spark in gathering-device and catches and thick grit barrier material, and the Explosion-proof cap that inspection socket configures can prevent further because Dynamic System is improper, causes the explosion danger of fuel gas.
Fuel gas purifying plant of the present invention is that bottom is in inverted conical, middle and upper part closed reaction vessel cylindrically, the top of reaction vessel is provided with fuel gas air inlet pipe and escape pipe, and the air inlet of air inlet pipe is connected with gas pipeline respectively with the gas outlet of escape pipe; Fuel gas air inlet pipe stretches in reaction vessel, and the gas outlet of air inlet pipe is positioned at the middle and lower part of reaction vessel; Be perfused with the lime aqueous solution flooding fuel gas air inlet pipe gas outlet in reaction vessel, the bottom of reaction vessel is provided with breast hole, and is equipped with opening and closing gate valve; Reaction vessel upper lateral part is provided with observation panel to be opened/closed.This observation panel can play toward adding limewash or lime and water in reaction vessel, and in observing response container, the furnace gas such as fuel gas and limewash carry out chemical reaction situation.CO in the furnace gases such as fuel gas
2carrying out chemical reaction with limewash is common practise.
The concentration that fuel gas purifying plant effectively can improve system fuel gas is set, makes system equipment utilize the better effects if of fuel gas.
Fuel gas dust arrester of the present invention is cyclone dust collectors or sack cleaner (deduster is common practise), arranges fuel gas dust arrester and can remove dust in fuel gas and furnace gas mist better, make fuel gas more clean.
Air-introduced machine of the present invention plays the effect of fuel gas transmitting power in furnace cupola fuel gas long-distance sand transport re-use device.
The present invention is rational in infrastructure, succinctly easy.Adopt this fuel gas long-distance sand transport re-use device, furnace cupola can be discharged in process of production based on the fuel gas of CO gas, remote conveying is delivered to the equipment such as boiler and is obtained fully effectively recycling, realizes the object that industry energy conservation reduces discharging.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of combustible gas collecting device;
Fig. 3 is the B-B sectional view of Fig. 2;
Fig. 4 is fuel gas purifying plant structural representation;
In figure: 1-gathering-device, 2-dust arrester, 3-purifying plant, 4-air-introduced machine, 5-gas pipeline, 1-1 inner core, 1-2 urceolus, 1-3 space separating tube, 1-4 inner core air inlet, separating tube gas outlet, 1-5 space, 1-6 urceolus gas outlet, 1-7 ring-shaped flat top cover, 1-8 ring-shaped flat base plate, annular gas collection space between 1-9 inner/outer tube, 1-10 spark capture material, 1-11 inspection socket, 1-12 Explosion-proof cap, 3-1 air inlet pipe, 3-2 escape pipe, 3-3 lime aqueous solution, 3-4 slag-drip opening, 3-5 opening and closing gate valve, 3-6 observation panel.
Detailed description of the invention
As shown in Figure 1, furnace cupola fuel gas long-distance sand transport re-use device, comprises fuel gas dust arrester 2, fuel gas purifying plant 3, air-introduced machine 4 that combustible gas collecting device 1, gas pipeline 5 and gas pipeline 5 set gradually; Described combustible gas collecting device 1 is arranged at below cupola charging mouth, and arranges near charge door, is fixedly connected with furnace cupola; Described air-introduced machine 4 utilizes equipment to be connected by gas pipeline 5 and fuel gas.
As shown in Figure 2,3, described combustible gas collecting device 1 is cylinder loop configuration, comprise coaxial the inner core 1-1, the urceolus 1-2 that arrange, and close ring-shaped flat top cover 1-7 and the ring-shaped flat base plate 1-8 of inside and outside cylinder top and bottom respectively, between inside and outside cylinder, form annular gas collection space 1-9; And the diameter of inside and outside cylinder is identical with the inside and outside footpath of furnace cupola respectively; Inner core 1-1 bottom evenly offers some fuel gas access aperture 1-4; Urceolus top is provided with fuel gas delivery outlet 1-6, and fuel gas delivery outlet 1-6 is connected with gas pipeline 5.The space separating tube 1-3 coaxially arranged with inside and outside cylinder is also provided with between the inside and outside cylinder of described combustible gas collecting device 1, be fixedly connected with ring-shaped flat base plate 1-8 bottom the separating tube 1-3 of space, space separating tube 1-3 evenly offers fuel gas tap 1-5, and the height and position of the fuel gas tap 1-5 that space separating tube 1-3 offers is consistent with the fuel gas access aperture 1-4 height and position that inner core 1-1 bottom is evenly offered; Fill spark between space separating tube 1-3 and inner core 1-1 to catch and thick grit barrier material 1-10; On inner core 1-1, fuel gas access aperture 1-4's offers height and position below the separating tube 1-3 height of space.The urceolus 1-2 top of described combustible gas collecting device 1 is provided with inspection socket 1-11, and is equipped with Explosion-proof cap 1-12.
As shown in Figure 4, described fuel gas purifying plant 3 for bottom be inverted conical, middle and upper part closed reaction vessel cylindrically, the gas outlet of air inlet and escape pipe 3-2 that the top of reaction vessel is provided with fuel gas air inlet pipe 3-1 and escape pipe 3-2, air inlet pipe 3-1 is connected with gas pipeline 5 respectively; Fuel gas air inlet pipe 3-1 stretches in reaction vessel, and the gas outlet of air inlet pipe 3-1 is positioned at the middle and lower part of reaction vessel; The lime aqueous solution 3-3 flooding fuel gas air inlet pipe 3-1 gas outlet is perfused with in reaction vessel; The bottom of reaction vessel is provided with breast hole 3-4, and is equipped with opening and closing gate valve 3-5; Reaction vessel upper portion side wall is provided with observation panel 3-6 to be opened/closed.
During concrete enforcement, described combustible gas collecting device (1) is by inner core heat-resisting steel sheet and plate, all the other are made with general steel plate welding, be positioned at below furnace cupola top-feed mouth, arrange near charge door, upper end face is fixedly connected with furnace binding respectively with bottom surface, and fuel gas and furnace gas mist are under the effect of system air-introduced machine (4), and the porous air inlet evenly arranged from gathering-device (1) inner core (1-1) bottom enters gathering-device (1).Fuel gas and furnace gas mist are when entering gathering-device (1), due to the effect of barrier material of filling between inner core (1-1) and space separating tube (1-3), block entering of thick grit on the one hand, the spark in furnace gas can be made to be put out on the other hand.
Fuel gas and furnace gas mist, by gathering-device (1), export through the gas outlet (1-6) that gathering-device (1) urceolus (1-2) upper lateral part is arranged, are delivered to dust arrester (2) by gas pipeline (5).The steel pipe of suitable bore selected by gas pipeline (5); Dust arrester (2) adopts cyclone dust collectors or sack cleaner, is steel structure, outsourcing or self-control.
After fuel gas and furnace gas mist are purified by dust arrester (2), then enter fuel gas purifying plant (3) by gas pipeline (5).Purifying plant (3) is also steel construction, need first deployed lime aqueous solution to be joined in the closed reaction vessel of this device before purifying plant (3) runs, after system cloud gray model is started, enter into the furnace gases such as the fuel gas in reaction vessel and with lime aqueous solution, chemical reaction can fully occur, a large amount of CO in furnace gas
2be absorbed (this chemical reaction is common practise), the CaCO generated after reaction
3pulp water is discharged through slag-drip opening can for furnace cupola slag making after precipitation drying.
The furnace gases such as fuel gas are by after fuel gas purifying plant (3), and the corresponding fuel gas be improved of concentration, through the effect of system transmitting power air-introduced machine (4), is delivered to the equipment recyclings such as boiler by connecting pipe.
Embodiment
Furnace cupola fuel gas long-distance sand transport re-use device of the present invention is applied and beneficial effect analysis on 5 tons of internal heat type blast-heating cupolas.
working condition:the present embodiment is that two 5 tons internal heat type blast-heating cupola rotation maintenance are produced, and be a spun cast pipe production line and a lost foam process pipe fitting production line supply iron liquid, this lost foam process pipe fitting line configuration has 2 tons of boiler supplying steam simultaneously.The 2 tons of boiler per tour of this seat need consume raw coal 800-1000 ㎏, distance about 100 meters, furnace cupola.
concrete enforcement: 1, processing and manufacturing combustible gas collecting device, fuel gas dust arrester, fuel gas purifying plant and purchase gas transmission pipe and air-introduced machine respectively; 2, combustible gas collecting device, fuel gas dust arrester, fuel gas purifying plant and the gas transmission steel pipe purchased and air-introduced machine are carried out installation and debugging according to on-the-spot with furnace cupola, and get the auxiliary material such as quick lime and apparatus ready, connect the preparations such as water source; 3, be delivered to these 2 tons of boilers after the fuel gas such as the CO discharged in described 5 tons of internal heat type blast-heating cupola fusion process being utilized system by fuel gas such as combustible gas collecting device, dust arrester, purifying plant, air-introduced machines to use.
beneficial effect is analyzed: these 5 tons of furnace cupola per tour are produced the fuel gas produced in about 50 tons of iron liquid processes and are equal to the energy of about 1000 ㎏ raw coal (now only by CO gas calculating in fuel gas, cast iron per ton is in fusion process, 30-50 ㎏ CO gas can be produced, 50 tons is 1500-2500 ㎏ CO gas, calorific capacity is calculated by being about 2000 ㎏ CO gases, calorific capacity is about 4500 kilocalories, adds other fuel gas CH
4and H
2deng calorific value, be about as much as the calorific capacity of 1000 ㎏ raw coal), just in time for this seat 2 tons of boilers provide the energy.This seat 2 tons of boilers utilize after in furnace cupola, fuel gas substitutes raw coal combustion, per tour can save raw coal about 1000 ㎏, (it is 1 ton that raw coal about 1000 ㎏ is saved in per tour can to reduce evaporative pattern castings production cost 200-260 yuan/ton, be worth: 600-780 yuan/ton, per tour calculates by 3 tons of pipe fitting finished products, ton all reduces production cost 200-260 unit), can reduce by about 20 ㎏ SO
2, 260 ㎏ lime-ash, 440 ㎏ CO
2and the waste gas waste sludge discharge such as 300-500 ㎏ CO, add that 5 tons of furnace cupola per tour fuel gas produced in 6.25 tons of raw coal block processes that burns is utilized, can reduce by about 2750 ㎏ CO
2the waste gas such as about 2500 ㎏ CO (discharge 20 ㎏ SO according to interrelated data 1 ton of raw coal combustion
2, 260 ㎏ lime-ash, 440 ㎏ CO
2and 300-500 ㎏ CO
deng waste gas), economy and environment benefit is clearly.
Claims (5)
1. a furnace cupola fuel gas long-distance sand transport re-use device, is characterized in that: comprise fuel gas dust arrester (2), fuel gas purifying plant (3), air-introduced machine (4) that combustible gas collecting device (1), gas pipeline (5) and gas pipeline (5) set gradually; Described combustible gas collecting device (1) is arranged at below cupola charging mouth, and arranges near charge door, is fixedly connected with furnace cupola; Described air-introduced machine (4) utilizes equipment to be connected by gas pipeline (5) with fuel gas.
2. furnace cupola fuel gas long-distance sand transport re-use device according to claim 1, it is characterized in that: described combustible gas collecting device (1) is cylinder loop configuration, comprise the coaxial inner core (1-1), the urceolus (1-2) that arrange, and close ring-shaped flat top cover (1-7) and the ring-shaped flat base plate (1-8) of inside and outside cylinder top and bottom respectively, form annular gas collection space (1-9) between inside and outside cylinder; And the diameter of inside and outside cylinder is identical with the inside and outside footpath of furnace cupola respectively; Inner core (1-1) bottom evenly offers some fuel gas access aperture (1-4); Urceolus top is provided with fuel gas delivery outlet (1-6), and fuel gas delivery outlet (1-6) is connected with gas pipeline (5).
3. furnace cupola fuel gas long-distance sand transport re-use device according to claim 2, it is characterized in that: in described combustible gas collecting device (1), also be provided with between urceolus with interior, the space separating tube (1-3) that urceolus is coaxially arranged, space separating tube (1-3) bottom is fixedly connected with ring-shaped flat base plate (1-8), space separating tube (1-3) evenly offers fuel gas tap (1-5), and the height and position of the fuel gas tap (1-5) that space separating tube (1-3) is offered is consistent with fuel gas access aperture (1-4) height and position that inner core (1-1) bottom is evenly offered, fill spark between space separating tube (1-3) and inner core (1-1) to catch and thick grit barrier material (1-10), on inner core (1-1), fuel gas access aperture (1-4) offers height and position below space separating tube (1-3) height.
4. the furnace cupola fuel gas long-distance sand transport re-use device according to Claims 2 or 3, is characterized in that: urceolus (1-2) top of described combustible gas collecting device (1) is provided with inspection socket (1-11), and is equipped with Explosion-proof cap (1-12).
5. furnace cupola fuel gas long-distance sand transport re-use device according to claim 1, it is characterized in that: described fuel gas purifying plant (3) for bottom be inverted conical, middle and upper part closed reaction vessel cylindrically, the top of reaction vessel is provided with fuel gas air inlet pipe (3-1) and escape pipe (3-2), and the air inlet of air inlet pipe (3-1) is connected with gas pipeline (5) respectively with the gas outlet of escape pipe (3-2); Fuel gas air inlet pipe (3-1) stretches in reaction vessel, and the gas outlet of air inlet pipe (3-1) is positioned at the middle and lower part of reaction vessel; The lime aqueous solution (3-3) flooding fuel gas air inlet pipe (3-1) gas outlet is perfused with in reaction vessel; The bottom of reaction vessel is provided with breast hole (3-4), and is equipped with opening and closing gate valve (3-5); Reaction vessel upper portion side wall is provided with observation panel to be opened/closed (3-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295018.3A CN104880090B (en) | 2015-06-02 | 2015-06-02 | Furnace cupola fuel gas long-distance sand transport reuse means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295018.3A CN104880090B (en) | 2015-06-02 | 2015-06-02 | Furnace cupola fuel gas long-distance sand transport reuse means |
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| CN104880090A true CN104880090A (en) | 2015-09-02 |
| CN104880090B CN104880090B (en) | 2017-06-13 |
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Citations (5)
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| CN101942538A (en) * | 2010-06-24 | 2011-01-12 | 北京国华新兴节能环保科技有限公司 | Process and equipment for dust collection and heat recovery by converter gas dry method |
| CN102278875A (en) * | 2011-08-31 | 2011-12-14 | 王洪旗 | Energy-saving and environment-friendly cupola furnace |
| CN202139252U (en) * | 2011-06-24 | 2012-02-08 | 北京首钢国际工程技术有限公司 | Spark collecting type cloth-bag purifying and recycling device using converter coal gas dry method |
| CN204694088U (en) * | 2015-06-02 | 2015-10-07 | 阳城县华王通用离心铸管厂 | Furnace cupola fuel gas long-distance sand transport re-use device |
-
2015
- 2015-06-02 CN CN201510295018.3A patent/CN104880090B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| US5988080A (en) * | 1995-10-03 | 1999-11-23 | Ebara Corporation | Waste heat recovery system and power generation system with dust filtration |
| CN101942538A (en) * | 2010-06-24 | 2011-01-12 | 北京国华新兴节能环保科技有限公司 | Process and equipment for dust collection and heat recovery by converter gas dry method |
| CN202139252U (en) * | 2011-06-24 | 2012-02-08 | 北京首钢国际工程技术有限公司 | Spark collecting type cloth-bag purifying and recycling device using converter coal gas dry method |
| CN102278875A (en) * | 2011-08-31 | 2011-12-14 | 王洪旗 | Energy-saving and environment-friendly cupola furnace |
| CN204694088U (en) * | 2015-06-02 | 2015-10-07 | 阳城县华王通用离心铸管厂 | Furnace cupola fuel gas long-distance sand transport re-use device |
Non-Patent Citations (2)
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| 张耀明等: "《玻璃纤维与矿物棉全书》", 31 March 2001, 化学工业出版社 * |
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