CN101832708A - Heat storage immersed isothermal smelting furnace - Google Patents

Heat storage immersed isothermal smelting furnace Download PDF

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Publication number
CN101832708A
CN101832708A CN 201010154018 CN201010154018A CN101832708A CN 101832708 A CN101832708 A CN 101832708A CN 201010154018 CN201010154018 CN 201010154018 CN 201010154018 A CN201010154018 A CN 201010154018A CN 101832708 A CN101832708 A CN 101832708A
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CN
China
Prior art keywords
combustion chamber
heat storage
regenerator
valve
fuel
Prior art date
Application number
CN 201010154018
Other languages
Chinese (zh)
Inventor
胡亚才
王红梅
俞自涛
阮光正
王武军
王维
帅鸥
Original Assignee
浙江大学
Priority date (The priority date 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 date listed.)
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Application filed by 浙江大学 filed Critical 浙江大学
Priority to CN 201010154018 priority Critical patent/CN101832708A/en
Publication of CN101832708A publication Critical patent/CN101832708A/en

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Abstract

The invention discloses a heat storage immersed isothermal smelting furnace, which comprises an automatic control system, a first heat storage chamber, a first combustion chamber, a second combustion chamber, a second heat storage chamber, a smelting pool, a fume heating tube bundle, a four-way change valve and the like, wherein the first heat storage chamber and the first combustion chamber are positioned in the same cavity and the first combustion chamber is positioned over the first heat storage chamber; the second heat storage chamber and the second combustion chamber are arranged in the same cavity, and the second combustion chamber is arranged above the second heat storage chamber; the first heat storage chamber, the first combustion chamber and the first combustion chamber, and the second heat storage chamber and the second combustion chamber are symmetrically positioned on two sides of the smelting pool respectively; and the fume heating tube bundle is suspended in the fume heating tube bundle, and two ends of the fume heating tube bundle are connected with the first combustion chamber and the second combustion chamber respectively. The furnace body temperature and components of the heat storage immersed isothermal smelting furnace are uniform, so the quality of a melt is greatly improved; no oxidation loss is caused; the comprehensive thermal efficiency of the furnace is greatly improved; energy utilization rate is improved; energy consumption is lowered; and pollutant emission is reduced.

Description

Heat storage immersed isothermal smelting furnace

Technical field

The present invention relates in the non-ferrous metal metallurgy industry especially to relate to a kind of heat storage immersed isothermal smelting furnace that is applicable to that metals such as aluminium, lead, zinc, magnesium, copper are used with the smelting furnace of fuel as thermal source.

Background technology

At present, most widely used in the non-ferrous metal metallurgy industry both at home and abroad is the reflective smelting furnace of flame, and it utilizes thermal-flame to heat and melting batch through furnace roof radiation and the direct radiation of flame, existing liquid or the gaseous fuels of adopting more.The advantage of the reflective smelting furnace of flame is that production capacity is big, firing rate is fast, smelting time is short, but shortcoming is also very outstanding.The evenly heat efficient of the reflective smelting furnace of common flame is less than 20%, flue gas loss is but up to more than 50%, though large-scale smelting furnace has been installed air preheater, but owing to reasons such as technology, price, life-spans, many smelting furnaces also can only be with about air preheat to 300 ℃, exhaust gas temperature is mostly more than 300 ℃, still have heat more than 30% with fume emission in atmosphere; And in fuel combustion process, burned flame direct projection furnace charge causes the burning loss serious; Because furnace gas conducts heat based on radiation, promptly burned flame sprays on the wall on burner hearth opposite from burner, reflect, so the furnace gas flowability is relatively poor again, and it is inhomogeneous to cause material to be heated, and burner hearth becomes the dead angle for four jiaos; In addition, the reflective smelting furnace pressure combustion of flame causes flare ejection burner hearth, causes the stuffy and temperature drift in work-yard.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, melt temperature and composition evenly, the heat storage immersed isothermal smelting furnace of non-oxidation scaling loss, thermal efficiency height and energy-conserving and environment-protective.

The present invention is achieved through the following technical solutions:

Heat storage immersed isothermal smelting furnace comprises automatic control system, first wind/flue, air blast, first control circuit, first regenerator, first combustion chamber, first fuel is fast for disconnected valve, fuel supply main road, first heat-insulation layer, second heat-insulation layer, fuel supply total valve, second fuel is fast for disconnected valve, second combustion chamber, second regenerator, the melting pond, second wind/flue, chimney, second control circuit, the flue gas heating tube bundle, air-introduced machine, smoke discharging pipe, four-way change-over valve, air supply line, the 3rd control circuit, charge door, discharging opening, overfall, air blast links to each other with a end of four-way change-over valve through air supply line; First wind/flue one end links to each other with the d end of four-way change-over valve, and the other end links to each other with the below of first regenerator; Second wind/flue one end links to each other with the b end of four-way change-over valve, and the other end links to each other with the below of second regenerator; First regenerator and first combustion chamber are positioned at same chamber, and first combustion chamber is in the top of first regenerator; Second regenerator and second combustion chamber (13) are positioned at same chamber, and second combustion chamber is in the top of second regenerator (14); The two both sides that lay respectively at the melting pond of first regenerator, first combustion chamber and second regenerator, second combustion chamber are symmetric arrangement; The flue gas heating tube bundle is unsettled to be arranged in the melting pond, and flue gas heating tube bundle two ends link to each other with second combustion chamber with first combustion chamber respectively; Be furnished with fuel supply total valve on the fuel supply main road, two branch roads of fuel supply total valve link to each other with the top of first combustion chamber with second combustion chamber respectively for disconnected valve with second fuel for disconnected valve fast fast by first fuel; Air-introduced machine links to each other the external chimney of air-introduced machine through smoke discharging pipe with the c end of four-way change-over valve; Automatic control system links to each other with four-way change-over valve for disconnected valve for disconnected valve, second fuel with first fuel respectively fast fast by first control circuit, second control circuit and the 3rd control circuit.

The described flue gas heating tube bundle that is positioned at outside the melting pond is enclosed with first heat-insulation layer and second heat-insulation layer.Described flue gas heating tube bundle is a pipe row structure.Described melting pond is provided with overfall.

The present invention compared with prior art has following beneficial effect:

1. the flue gas heating tube bundle that is arranged in the melting pond is immersed in material and material is heated makes its fusing, make the melt temperature unanimity, composition is even, can formation temperature gradient and thermal stratification, and the melt quality improves greatly, iron loss is little, dissolved gases in the melt, solid inclusions are few, and the slag of formation also obviously reduces, and has simplified follow-up online treatment process, improve the blank quality, reduced cost;

2. the flue gas that produces of will burning is passed in the flue gas heating tube bundle material is heated, avoided flue gas to contact with the direct of material, there is not the burning scaling loss, improved simultaneously the integrated heat efficiency of stove greatly, improved energy utilization rate, reduce energy resource consumption, reduced pollutant emission;

Description of drawings

Fig. 1 looks schematic diagram for the master of heat storage immersed isothermal smelting furnace;

Fig. 2 partly cuts open schematic diagram for the A-A of Fig. 1;

Among the figure: automatic control system 1, first wind/flue 2, air blast 3, first control circuit 4, first regenerator 5, first combustion chamber 6, first fuel is fast for disconnected valve 7, fuel supply main road 8, first heat-insulation layer 9, second heat-insulation layer 10, fuel supply total valve 11, second fuel is fast for disconnected valve 12, second combustion chamber 13, second regenerator 14, melting pond 15, second wind/flue 16, chimney 17, second control circuit 18, flue gas heating tube bundle 19, air-introduced machine 20, smoke discharging pipe 21, four-way change-over valve 22, air supply line 23, the 3rd control circuit 24, charge door 25, discharging opening 26, overfall 27.

The specific embodiment

The present invention will be further described for the contrast accompanying drawing.

As Fig. 1, shown in 2, heat storage immersed isothermal smelting furnace comprises automatic control system 1, first wind/flue 2, air blast 3, first control circuit 4, first regenerator 5, first combustion chamber 6, first fuel is fast for disconnected valve 7, fuel supply main road 8, first heat-insulation layer 9, second heat-insulation layer 10, fuel supply total valve 11, second fuel is fast for disconnected valve 12, second combustion chamber 13, second regenerator 14, melting pond 15, second wind/flue 16, chimney 17, second control circuit 18, flue gas heating tube bundle 19, air-introduced machine 20, smoke discharging pipe 21, four-way change-over valve 22, air supply line 23, the 3rd control circuit 24, charge door 25, discharging opening 26, overfall 27, air blast 3 links to each other with a end of four-way change-over valve 22 through air supply line 23; First wind/flue 2 one ends link to each other with the d end of four-way change-over valve 22, and the other end links to each other with the below of first regenerator 5; Second wind/flue 16 1 ends link to each other with the b end of four-way change-over valve 22, and the other end links to each other with the below of second regenerator 14; First regenerator 5 and first combustion chamber 6 are positioned at same chamber, and first combustion chamber 6 is in the top of first regenerator 5; Second regenerator 14 and second combustion chamber 13 are positioned at same chamber, and second combustion chamber 13 is in the top of second regenerator 14; The two both sides that lay respectively at melting pond 15 of first regenerator 5, first combustion chamber 6 and second regenerator 14, second combustion chamber 13 are symmetric arrangement; Flue gas heating tube bundle 19 unsettled being arranged in the melting pond 15, flue gas heating tube bundle 19 two ends link to each other with second combustion chamber 13 with first combustion chamber 6 respectively; Be furnished with fuel supply total valve 11 on the fuel supply main road 8, two branch roads of fuel supply total valve 11 link to each other with the top of first combustion chamber 6 and second combustion chamber 13 respectively for disconnected valve 12 with second fuel for disconnected valve 7 fast fast by first fuel; Air-introduced machine 20 links to each other air-introduced machine 20 external chimneys 17 through smoke discharging pipe 21 with the c end of four-way change-over valve 22; Automatic control system 1 links to each other with four-way change-over valve 22 for disconnected valve 12 for disconnected valve 7, second fuel with first fuel respectively fast fast by first control circuit 4, second control circuit 18 and the 3rd control circuit 24.

The described melting pond 15 outer flue gas heating tube bundles 19 that are positioned at are enclosed with first heat-insulation layer 9 and second heat-insulation layer 10.Described flue gas heating tube bundle 19 is pipe row structures.Described melting pond 15 is provided with overfall 27.

The course of work of the present invention is as follows:

The normal temperature air that comes out from air blast 3 is switched by four-way change-over valve 22, by second wind/flue 16, after heat storage in second regenerator 14 carries out preheating again, enter second combustion chamber 13, open second fuel simultaneously fast for disconnected valve 12, in the air of preheating, spray into fuel, the high-temperature flue gas that burning produces is introduced in the melting pond 15 by flue gas heating tube bundle 19 material is carried out the immersion heating, then flue gas is stored in the heat storage through first regenerator 5 and with sensible heat, the low-temperature flue gas process four-way change-over valve 22 that is lower than 150 ℃ is at last finished a commutation cycle thus by arranging to atmosphere in the air-introduced machine 20 introducing chimneys 17 again; Again that operating temperature is the not high four-way change-over valve 22 and first fuel fast switch to another kind of mode of operation for disconnected valve 12 fast for the disconnected valve 7 and second fuel, make heat storage in first regenerator 5 and second regenerator 14 be in the duty that accumulation of heat and heat release replace.In the whole process, first fuel is finished by automatic control system 1 for the execution of disconnected valve 12 and four-way change-over valve 22 actions fast for disconnected valve 7, second fuel fast.

Claims (4)

1. heat storage immersed isothermal smelting furnace, it is characterized in that comprising automatic control system (1), first wind/flue (2), air blast (3), first control circuit (4), first regenerator (5), first combustion chamber (6), first fuel is fast for disconnected valve (7), fuel supply main road (8), first heat-insulation layer (9), second heat-insulation layer (10), fuel supply total valve (11), second fuel is fast for disconnected valve (12), second combustion chamber (13), second regenerator (14), melting pond (15), second wind/flue (16), chimney (17), second control circuit (18), flue gas heating tube bundle (19), air-introduced machine (20), smoke discharging pipe (21), four-way change-over valve (22), air supply line (23), the 3rd control circuit (24), charge door (25), discharging opening (26), overfall (27), air blast (3) links to each other with a end of four-way change-over valve (22) through air supply line (23); First wind/flue (2) one ends link to each other with the d end of four-way change-over valve (22), and the other end links to each other with the below of first regenerator (5); Second wind/flue (16) one ends link to each other with the b end of four-way change-over valve (22), and the other end links to each other with the below of second regenerator (14); First regenerator (5) and first combustion chamber (6) are positioned at same chamber, and first combustion chamber (6) are in the top of first regenerator (5); Second regenerator (14) is positioned at same chamber with second combustion chamber (13), and second combustion chamber (13) are in the top of second regenerator (14); The two both sides that lay respectively at melting pond (15) of first regenerator (5), first combustion chamber (6) and second regenerator (14), second combustion chamber (13) are symmetric arrangement; Flue gas heating tube bundle (19) is unsettled to be arranged in the melting pond (15), and flue gas heating tube bundle (19) two ends link to each other with second combustion chamber (13) with first combustion chamber (6) respectively; Be furnished with fuel supply total valve (11) on the fuel supply main road (8), two branch roads of fuel supply total valve (11) link to each other with first combustion chamber (6) top with second combustion chamber (13) respectively for disconnected valve (12) with second fuel for disconnected valve (7) fast fast by first fuel; Air-introduced machine (20) links to each other the external chimney of air-introduced machine (20) (17) through smoke discharging pipe (21) with the c end of four-way change-over valve (22); Automatic control system (1) links to each other with four-way change-over valve (22) for disconnected valve (12) for disconnected valve (7), second fuel with first fuel respectively fast fast by first control circuit (4), second control circuit (18) and the 3rd control circuit (24).
2. heat storage immersed isothermal smelting furnace according to claim 1 is characterized in that the described outer flue gas heating tube bundle (19) in melting pond (15) that is positioned at is enclosed with first heat-insulation layer (9) and second heat-insulation layer (10).
3. heat storage immersed isothermal smelting furnace according to claim 1 is characterized in that described flue gas heating tube bundle (19) is a pipe row structure.
4. heat storage immersed isothermal smelting furnace according to claim 1 is characterized in that described melting pond (15) is provided with overfall (27).
CN 201010154018 2010-04-23 2010-04-23 Heat storage immersed isothermal smelting furnace CN101832708A (en)

Priority Applications (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102243016A (en) * 2011-04-22 2011-11-16 浙江大学 Reciprocating type porous medium gas burning metal smelting furnace
CN102620565A (en) * 2012-03-21 2012-08-01 深圳市汇能节能投资管理有限公司 High temperature air combustion apparatus of solid fuel
WO2013060241A1 (en) * 2011-10-28 2013-05-02 恒凯发展有限公司 Combustion furnace with coaxial staged hearth and heating method thereof
CN103528368A (en) * 2013-10-23 2014-01-22 杨志文 Fast switchover heat accumulating type aluminum smelting furnace
CN103968666A (en) * 2014-05-26 2014-08-06 苏州卡迪亚铝业有限公司 Smelting furnace for producing aluminium or aluminium alloy
CN104101212A (en) * 2014-07-29 2014-10-15 苏州新协力环保科技有限公司 Internal-heating biomass smelting furnace
CN105605916A (en) * 2016-03-18 2016-05-25 深圳市龙瑞泰兴能源环境科技有限公司 Burning-loss-free energy-saving metallurgical furnace

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4528012A (en) * 1984-01-30 1985-07-09 Owens-Illinois, Inc. Cogeneration from glass furnace waste heat recovery
US4562996A (en) * 1983-09-13 1986-01-07 Stamp Thomas B Apparatus for melting metal
CN2500925Y (en) * 2001-09-26 2002-07-17 北京朗天润宇环保科技有限公司 High-temp heat storage type burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562996A (en) * 1983-09-13 1986-01-07 Stamp Thomas B Apparatus for melting metal
US4528012A (en) * 1984-01-30 1985-07-09 Owens-Illinois, Inc. Cogeneration from glass furnace waste heat recovery
CN2500925Y (en) * 2001-09-26 2002-07-17 北京朗天润宇环保科技有限公司 High-temp heat storage type burner

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102243016A (en) * 2011-04-22 2011-11-16 浙江大学 Reciprocating type porous medium gas burning metal smelting furnace
CN102243016B (en) * 2011-04-22 2013-06-12 浙江大学 Reciprocating type porous medium gas burning metal smelting furnace
WO2013060241A1 (en) * 2011-10-28 2013-05-02 恒凯发展有限公司 Combustion furnace with coaxial staged hearth and heating method thereof
CN102620565A (en) * 2012-03-21 2012-08-01 深圳市汇能节能投资管理有限公司 High temperature air combustion apparatus of solid fuel
CN103528368A (en) * 2013-10-23 2014-01-22 杨志文 Fast switchover heat accumulating type aluminum smelting furnace
CN103528368B (en) * 2013-10-23 2016-01-20 杨志文 Quick switching heat accumulation type aluminum melting furnace
CN103968666A (en) * 2014-05-26 2014-08-06 苏州卡迪亚铝业有限公司 Smelting furnace for producing aluminium or aluminium alloy
CN104101212A (en) * 2014-07-29 2014-10-15 苏州新协力环保科技有限公司 Internal-heating biomass smelting furnace
CN105605916A (en) * 2016-03-18 2016-05-25 深圳市龙瑞泰兴能源环境科技有限公司 Burning-loss-free energy-saving metallurgical furnace

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Open date: 20100915